JP5272360B2 - Ventilation air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress generation of molds, bacteria, and foul smell by drying moisture such as condensation water generated on a heat exchanger surface in a ventilation air conditioning device carrying out ventilation air conditioning of a living space such as a bathroom by using a heat pump. <P>SOLUTION: The ventilation air conditioning device is composed of a circulation draft duct 40 circulating air in the bathroom 3, a ventilation draft duct 43 sucking in air from an exhaust opening opened in an indoor space other than the bathroom 3 and exhausting it outside, a compressor 44 compressing a coolant, a first heat exchanger 45 provided in the circulation draft duct 40, and a coolant circuit 21 connected by piping such that the coolant is circulated in an order of an expansion mechanism 46 expanding the coolant and a second heat exchanger 47 provided in the ventilation draft duct 43. It is characterized by that a state of moisture such as condensation water remaining on a heat exchanger surface is prevented. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a ventilation air conditioner that performs ventilation air conditioning of a living space such as a bathroom by using, for example, a heat pump.

  A conventional ventilation air conditioner that performs ventilation and air conditioning of a living space such as a bathroom using a heat pump is installed in a bathroom or a dressing room, and is equipped with a heat pump evaporator and condenser in a circulation air passage to remove dehumidified air indoors. If necessary, there is one that can be ventilated by ventilating from an air passage that is configured separately from the circulation air passage (see, for example, Patent Document 1).

As another ventilation air conditioner, a heat pump is separated into an outdoor unit and an indoor unit, heat is absorbed (or released) from the outside air in a heat exchanger provided in the outdoor unit, and a bathroom is installed in the heat exchanger provided in the indoor unit. Some air-condition the bathroom by radiating heat (or absorbing heat) to the air (see, for example, Patent Document 2).
Japanese Patent Laid-Open No. 2003-343892 JP 2002-349930 A

  As described above, various types of ventilation air conditioners such as bathrooms using heat pumps have been proposed. Both of the ventilation air conditioners exemplified in Patent Document 1 and Patent Document 2 are intended to dry the room and clothing by circulating air heated by a condenser after being cooled and dehumidified by an evaporator of a refrigeration cycle. Patent Document 1 is a configuration in which a heat exchanger (evaporator) that absorbs heat with respect to air and a heat exchanger (condenser) that radiates heat are integrated in a single device. Both are separated into an indoor unit side and an outdoor unit side. Each form is a different ventilation air conditioner, but in any case, after the condensed water generated in the dehumidifying step of the circulating air is stored in the tray, it is drained out of the apparatus by a drain pump. However, in order for dew condensation water generated in the dehumidification process to be stored in the tray, heat exchange takes place due to the passage of a certain amount of time from the heat exchanger on the heat absorbing side, which is the dew condensation water generation unit, to the tray and the surface tension. It is necessary to circulate the air to guide the condensed water that is to remain on the surface of the vessel to the tray, that is, a considerable amount of condensed water remains on the surface of the heat exchanger at the end of the operation. For this reason, since the remaining water becomes a source of mold, germs, and off-flavors, it is desired to provide means for drying the heat exchanger surface after operation.

  The present invention solves the above-described conventional problems, and by drying the heat exchanger, it prevents moisture such as condensed water from remaining on the surface of the heat exchanger, and suppresses generation of mold, germs, and off-flavors. It aims at providing the bathroom ventilation air conditioner which can do.

In order to achieve the above object, the first solution provided by the present invention includes a suction port that sucks air in the bathroom, a circulation air passage that blows air sucked from the suction port, and air in the bathroom. Air is sucked or exhausted from a circulation fan that is configured to include a circulation fan that sucks or blows air, an air outlet that blows air into the bathroom, and an exhaust port that is open to an indoor space other than the bathroom. A ventilation fan passage provided with a ventilation fan for performing ventilation, a compressor for compressing refrigerant, a first heat exchanger provided in the circulation fan passage, an expansion mechanism for expanding refrigerant, and the ventilation fan passage In a ventilation air conditioner configured with a refrigerant circuit connected by piping so that the refrigerant circulates in the order of the provided second heat exchanger, moisture on the surface of the first heat exchanger and the surface of the second heat exchanger is dried. In-device drying operation machine A fine water droplet generator as means for generating fine water droplets for humidifying the air, and humid air containing fine water droplets is supplied to the air in the circulation air passage by the fine water droplet generator, Heated by a heat exchanger, blown into the bathroom, humidified and heated in the bathroom, bathed in a sauna environment, provided with a flow path switching valve in the refrigerant circuit for reversing the direction of refrigerant circulation, and switching the flow path switching valve Cooling down after bathing in the summer is performed by cooling operation.

By this means, the inside of the bathroom can be humidified and heated to enter a sauna environment, and cooling can be performed after bathing in the summer by cooling operation. By drying the heat exchanger, a state where moisture such as condensed water remains on the surface of the heat exchanger can be prevented, and a ventilation air conditioner that can suppress generation of mold, germs, and off-flavors can be obtained. By humidifying and heating operation, the bathroom can be made into a hot and humid sauna environment. It is no longer necessary to install a component as a new heat source, and it is only necessary to provide a valve in the refrigerant circuit that reverses the circulation direction of the refrigerant. A ventilation air conditioner that can be switched to a heat exchanger that radiates heat from the exchanger is obtained.

  Moreover, the 2nd solution means which this invention took is that the drying operation in an apparatus is performed after completion | finish of the air-conditioning operation in a bathroom.

  By this means, the heat exchanger is immediately dried without leaving a large amount of condensed water remaining in the apparatus after operation, and ventilation that can suppress generation of mold, germs, and off-flavors An air conditioner is obtained.

  In addition, the third solution provided by the present invention is to execute the in-apparatus drying operation after a preset period.

  With this measure, dirt, germs, and mold on the heat exchanger surface that have accumulated in a small amount in a state that has not been used for a long period of time can be dealt with by periodically performing an in-device drying operation. Ventilation air conditioner that can suppress the generation of odors, germs and off-flavors can be obtained.

  The fourth solution provided by the present invention is provided with a humidity sensor for detecting humidity. When the apparatus is stopped, the humidity sensor provided in the apparatus automatically exceeds a certain set value to automatically dry the apparatus. Is to be executed.

  By this means, the generation of mold, germs and off-flavors can also be suppressed by drying the heat exchanger with respect to the dew condensation on the surface of the heat exchanger that is generated in the apparatus due to steaming in the bathtub or when bathing in the shower. Ventilation air conditioner that can be obtained.

  In addition, a fifth solution provided by the present invention is to have an in-device drying operation mode in which the user can arbitrarily execute the in-device drying operation.

  By this means, it is possible to obtain a ventilation air conditioner capable of suppressing the generation of mold, germs and off-flavors by arbitrarily drying the heat exchanger when the user is concerned.

  In addition, the sixth solution provided by the present invention is that a humidity sensor for detecting humidity is provided in the apparatus to detect the humidity of the air flowing through the apparatus, and the humidity detected by the humidity sensor is set in advance. If the calculated value is reached, it is considered that the inside of the apparatus has been dried and the operation is stopped.

  By this means, it is possible to immediately detect the humidity environment in the apparatus, so that it is possible to control the degree of drying of the heat exchanger. In other words, it is possible to obtain a ventilation air conditioner that can be controlled to start operation if it is determined as an environment that requires in-device drying operation, and to automatically stop operation if it is determined that the surface of the heat exchanger has been dried. .

  In addition, the seventh solution taken by the present invention is provided with a humidity sensor on the upstream side and the downstream side of the second heat exchanger, the humidity sensor detects the humidity of the air before and after passing through the second heat exchanger, If the difference between the two is within the set range, it is determined that the heat exchanger is dry and the operation is stopped.

  By this means, since the humidity environment before and after passing through the heat exchanger can be detected immediately, a ventilation air conditioner capable of controlling the degree of drying of the heat exchanger is obtained.

  In addition, the eighth solution provided by the present invention includes a temperature and humidity sensor on the downstream side of the second heat exchanger, detects the temperature and humidity of the air after passing through the second heat exchanger by the temperature and humidity sensor, If the value is set in advance according to the detected temperature and humidity, it is considered that the inside of the apparatus has been dried and the operation is stopped.

  By this means, since the temperature and humidity environment of the air after passing through the heat exchanger can be detected immediately, it becomes possible to control the degree of drying of the heat exchanger. Moreover, according to this means, since the temperature and humidity sensor required for controlling the drying operation in the apparatus is a single installation, a ventilation air conditioner capable of reducing the number of components can be obtained.

  In addition, the ninth solution taken by the present invention includes a temperature / humidity sensor upstream of the second heat exchanger, detects the temperature / humidity of the air before passing through the second heat exchanger by the temperature / humidity sensor, According to the detected temperature and humidity, the drying operation in the apparatus is performed for a preset time.

  By this means, since the temperature and humidity environment of the air before passing through the heat exchanger can be detected immediately, it becomes possible to control the degree of drying of the heat exchanger. Moreover, according to this means, since the temperature and humidity sensor required for controlling the drying operation in the apparatus is a single installation, a ventilation air conditioner capable of reducing the number of components can be obtained.

  The tenth solving means taken by the present invention is that the heat exchanger surface drying means is means utilizing heating.

  By this means, it is possible to dry the condensed water remaining on the heat exchanger surface by promoting evaporation due to heat, and therefore it is possible to sufficiently dry the condensed water remaining in a place that is difficult to reach by air circulation. It becomes possible. Moreover, according to this means, the ventilation air conditioner which can be utilized also for the defrosting operation for removing the frost formation on the heat exchanger surface is obtained.

The eleventh solution taken by the present invention is that the expansion mechanism that expands the refrigerant installed in the refrigerant circuit is configured by a valve, and the second heat exchanger is passed by adjusting the opening of the valve. The temperature of the refrigerant to be increased is used as a means for drying the surface of the heat exchanger.

  This means eliminates the need for installing a new heat source component, and passes the second heat exchanger as a heating means for drying the heat exchanger surface only by adjusting the opening of the expansion valve that expands the refrigerant. A ventilation air conditioner capable of increasing the refrigerant temperature is obtained.

A twelfth solution provided by the present invention is that a heater is provided as a heat source in the vicinity of a heat exchanger to be dried and used as a heating means for drying the surface of the heat exchanger.

  By this means, a ventilation air conditioner capable of drying the surface of the heat exchanger efficiently can be obtained by installing a heater in the vicinity of a portion that is difficult to dry on the surface of the heat exchanger.

The thirteenth solution provided by the present invention is that the heat exchanger surface drying means is a blowing means using a blower.

  By this means, it is possible to dry the surface of the heat exchanger only by considering the air circulation path without requiring new components for drying. Moreover, the ventilation air conditioner which can avoid the problem of the difference odor which the water | moisture content generate | occur | produced in the drying by a heating means evaporates, and the adhesion of the scale component in the residual water | moisture content can be avoided.

In addition, the fourteenth solution taken by the present invention is that the ventilation fan is operated so that air is ventilated from the exhaust opening opened to the indoor space other than the bathroom to the outside through the heat exchanger to be dried. It is supposed to be dried.

  By this means, it is possible to dry the surface of the heat exchanger with a simple configuration such as an air flow path similar to that during heating operation. Moreover, since the air which passes a heat exchanger is outdoor space other than a bathroom, the ventilation air conditioner which can let the air of the stable temperature / humidity pass to a heat exchanger is obtained.

Further, the fifteenth solution taken by the present invention is that the ventilation fan is operated so that the air is ventilated from the suction port for sucking the air in the bathroom to the outside through the heat exchanger to be dried. It was decided to make it dry.

  By this means, for example, if the drying operation in the apparatus after heating the inside of the bathroom, the air that passes through the heat exchanger is high temperature and low humidity. Therefore, a ventilation air conditioner that can shorten the drying time is provided. can get.

The sixteenth solution provided by the present invention is that the heat exchanger surface drying means is a combination of means using heating and air blowing means using a blower.

  By this means, a ventilation air conditioner capable of shortening the drying time is obtained.

In addition, the seventeenth solving means taken by the present invention is a combination of a means in which the heat exchanger surface drying means uses heating and a blowing means using a blower, and the blower is used immediately after the start of the drying operation in the apparatus. It is supposed to be only drying by a blowing means.

  By this means, in the stage immediately after the start of the drying operation in the apparatus in which a large amount of dew condensation water still remains on the heat exchanger surface, only drying by the air blowing means is performed, and after the remaining amount of dew condensation water is reduced to some extent, the drying is also combined with the heating means. By adopting the method, it is possible to obtain a ventilation air conditioner capable of reducing the power consumption of the operation by reducing the power consumption required during the drying operation by the heating means.

Further, the eighteenth solving means taken by the present invention is a combination of a means in which the heat exchanger surface drying means uses heating and a blowing means using a blower, and uses the heating immediately after the start of the in-device drying operation. The drying is performed using both of the above means and the air blowing means using the blower.

  By this means, a ventilation air conditioner capable of shortening the drying time is obtained.

According to the ventilation air conditioner of the present invention, the inside of a bathroom can be humidified and heated to enter a sauna environment, and cool-down after bathing in summer can be performed by cooling operation. By humidifying and heating operation, the bathroom can be made into a hot and humid sauna environment. By drying the heat exchanger, it is possible to prevent moisture such as condensed water from remaining on the surface of the heat exchanger, and to suppress generation of mold, germs, and off-flavors.

The invention according to claim 1 of the present invention includes a suction port that sucks air in the bathroom, a circulation air passage that blows air sucked from the suction port, and a circulation fan that sucks or blows air in the bathroom. A ventilation fan configured to ventilate air by sucking air from an exhaust port opened in an indoor space other than the bathroom and exhausting the air outside the circulation ventilation path constituted by an outlet for blowing air into the bathroom Ventilation ventilation path provided, compressor for compressing refrigerant, first heat exchanger provided in the circulation ventilation path, expansion mechanism for expanding refrigerant, and second heat exchanger provided in the ventilation ventilation path In the ventilation air conditioner configured with a refrigerant circuit connected by piping so that the refrigerant circulates in this order, it has an in-device drying operation function of drying moisture on the surface of the first heat exchanger and the surface of the second heat exchanger. And fine air to humidify A fine water droplet generator as a means for generating water droplets is provided, and humid air containing fine water droplets is supplied to the air in the circulation air passage by the fine water droplet generator and is heated by the first heat exchanger to be inside the bathroom. , Humidified and heated in the bathroom and bathed in a sauna environment, provided with a flow path switching valve in the refrigerant circuit for reversing the direction of refrigerant circulation, after cooling in the summer by bathing by switching the flow path switching valve Cooling down is performed, and by this means, the inside of the bathroom is humidified and heated to bathe in a sauna environment, and cooling down after the bathing in summer can be performed by cooling operation. By drying the heat exchanger, it is possible to prevent moisture such as condensed water from remaining on the surface of the heat exchanger, and to suppress generation of mold, germs, and off-flavors. By humidifying and heating operation, the bathroom can be made into a hot and humid sauna environment. It is no longer necessary to install a component as a new heat source, and it is only necessary to provide a valve in the refrigerant circuit that reverses the circulation direction of the refrigerant. The exchanger can be switched to the heat exchanger on the side of heat dissipation.

  According to the second aspect of the present invention, the drying operation in the apparatus is executed after the completion of the air conditioning operation in the bathroom. By this means, a large amount of condensed water remains in the apparatus after the operation. By immediately drying the heat exchanger without leaving it as it is, it is possible to suppress the occurrence of mold, germs and off-flavors.

  The invention according to claim 3 of the present invention is such that the drying operation in the apparatus is executed after a preset period, and by this means, even though it is not used for a long period of time, a very small amount is accumulated. Contamination, germs, mold, etc. on the surface of the heat exchanger can be dealt with by periodically performing an in-device drying operation, and generation of mold, germs, and off-flavors can be suppressed.

  According to a fourth aspect of the present invention, a humidity sensor for detecting humidity is provided, and when the humidity sensor provided in the apparatus exceeds a certain set value when the apparatus is stopped, the drying operation in the apparatus is automatically executed. By this means, mold and germs can be removed by drying the heat exchanger with respect to the dew condensation on the surface of the heat exchanger generated in the device by filling the bath or steaming when taking a shower. The generation of off-flavors can be suppressed.

  The invention according to claim 5 of the present invention has an in-apparatus drying operation mode in which the user can arbitrarily execute the in-apparatus drying operation. By this means, the user is concerned. By arbitrarily drying the heat exchanger in the wet state, generation of mold, germs and off-flavors can be suppressed.

  According to a sixth aspect of the present invention, a humidity sensor for detecting humidity is provided in the apparatus to detect the humidity of the air flowing through the apparatus, and the humidity detected by the humidity sensor is a preset numerical value. If this is the case, the operation is considered to have been dried, and the operation is stopped. By this means, the humidity environment in the device can be detected immediately, so the degree of drying of the heat exchanger can be controlled. Is possible. That is, it is possible to perform control such that the operation is started when it is determined that the drying operation in the apparatus is necessary, and the operation is automatically stopped when it is determined that the surface of the heat exchanger has been dried.

  The invention according to claim 7 of the present invention includes a humidity sensor on the upstream side and the downstream side of the second heat exchanger, detects humidity of the air before and after passing through the second heat exchanger by the humidity sensor, and between them If the difference is within the set range, it is determined that the heat exchanger is dry and the operation is stopped. By this means, the humidity environment before and after passing through the heat exchanger can be detected immediately. Therefore, the degree of drying of the heat exchanger can be controlled.

  The invention according to claim 8 of the present invention includes a temperature / humidity sensor on the downstream side of the second heat exchanger, detects the temperature / humidity of the air after passing through the second heat exchanger by the temperature / humidity sensor, and detects the detected temperature. If the numerical value set in advance according to the humidity is reached, it is considered that the inside of the device has been dried, and the operation is stopped. By this means, the temperature and humidity environment of the air after passing through the heat exchanger can be detected immediately. Therefore, it becomes possible to control the degree of drying of the heat exchanger. Further, according to this means, the temperature / humidity sensor necessary for controlling the drying operation in the apparatus is a single installation, and therefore the number of components can be reduced.

  The invention according to claim 9 of the present invention includes a temperature and humidity sensor upstream of the second heat exchanger, detects the temperature and humidity of the air before passing through the second heat exchanger by the temperature and humidity sensor, and detects the detected temperature. According to the humidity, the drying operation in the apparatus is performed for a preset time. By this means, the temperature and humidity environment of the air before passing through the heat exchanger can be detected immediately. It becomes possible to control the degree of drying. Further, according to this means, the temperature / humidity sensor necessary for controlling the drying operation in the apparatus is a single installation, and therefore the number of components can be reduced.

  In the invention according to claim 10 of the present invention, the heat exchanger surface drying means is a means utilizing heating, and by this means, heat is dehydrated against dew condensation water remaining on the heat exchanger surface. Therefore, it is possible to sufficiently dry the dew condensation water remaining in a place that is difficult to reach by air circulation. Moreover, according to this means, it can utilize also for the defrost operation for removing the frost formation on the heat exchanger surface.

According to an eleventh aspect of the present invention, the temperature of the refrigerant passing through the second heat exchanger is adjusted by using an expansion mechanism for expanding the refrigerant installed in the refrigerant circuit as a valve, and adjusting the opening of the valve. As a means to dry the surface of the heat exchanger, this means eliminates the need to install a new heat source component and only adjusts the opening of the expansion valve that expands the refrigerant. The temperature of the refrigerant passing through the second heat exchanger can be raised as a heating means for drying the heat exchanger surface.

In the invention according to claim 12 of the present invention, a heater is provided as a heat source in the vicinity of the heat exchanger to be dried and used as a heating means for drying the surface of the heat exchanger. An efficient heat exchanger surface can be dried by installing a heater in the vicinity of a portion that is difficult to dry on the exchanger surface.

The invention described in claim 13 of the present invention is that the heat exchanger surface drying means is an air blowing means using a blower, and this means does not require a new component for drying, The heat exchanger surface can be dried only by considering the air circulation path. In addition, it is possible to avoid problems such as a difference odor in which moisture generated during drying by the heating means evaporates and adhesion of scale components in the remaining moisture.

According to the fourteenth aspect of the present invention, by operating the ventilation fan, the air is ventilated from the exhaust opening opened in the indoor space other than the bathroom to the outside through the heat exchanger to be dried. By this means, the surface of the heat exchanger can be dried with a simple configuration such as an air flow path similar to that during heating operation. In addition, since the air passing through the heat exchanger is an outdoor space other than the bathroom, air with stable temperature and humidity can be passed through the heat exchanger.

According to the fifteenth aspect of the present invention, by operating the ventilation fan, the air is dried by passing air through the heat exchanger to be dried from the suction port for sucking air in the bathroom to the outside. By this means, for example, if the drying operation in the apparatus after heating the inside of the bathroom, the air passing through the heat exchanger is high temperature and low humidity, so the drying time is shortened. Can do.

The invention according to claim 16 of the present invention is that the heat exchanger surface drying means is a combination of means utilizing heating and air blowing means using a blower, and this means shortens the drying time. Can be achieved.

The invention according to claim 17 of the present invention is a combination of a means that uses heat as the heat exchanger surface drying means and a blowing means that uses a blower, and immediately after the start of the in-device drying operation, drying by a blowing means that uses a blower. By this means, in the stage immediately after the start of the drying operation in the apparatus in which a large amount of condensed water still remains on the heat exchanger surface, only the drying by the blowing means is performed, and the remaining amount of condensed water is to some extent. By reducing the power consumption required for the drying operation by the heating means by reducing the power consumption, it is possible to reduce the power consumption of the operation.

The invention according to claim 18 of the present invention is a combination of a means that uses heat as the heat exchanger surface drying means and a blower means that uses a blower, and the means that uses the heating immediately after the start of the in-apparatus drying operation; Drying is performed using both means of the air blowing means using a blower, and the drying time can be shortened by this means.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to the drawings. First, the migration space where the ventilation air conditioner in this invention is installed is demonstrated.

  FIG. 1 is a sketch of a migration space where a ventilation air conditioner according to Embodiment 1 of the present invention is installed. In FIG. 1, a living space 1 is partitioned into a living room 2, a bathroom 3, a dressing room 4, a toilet 5, and the like, and a ventilation air conditioner 6 is installed behind the ceiling of the bathroom 3. The ventilation air conditioner 6 includes an outdoor exhaust duct 7 that communicates with the ventilation air conditioner 6 outdoors, an exhaust duct A9 that communicates with the ventilation air conditioner 6 and an exhaust port A8 that opens to the ceiling of the dressing room 4, and the ceiling of the toilet 5. An exhaust duct B <b> 11 that connects the exhaust port B <b> 10 that opens to the ventilation air conditioner 6 is connected. Further, a ventilation sirocco fan 12 is disposed inside the ventilation air conditioner 6, and an outdoor exhaust duct 7 that communicates the outdoors with the ventilation air conditioner 6 is connected to the blowing side of the ventilation sirocco fan 12, and the dressing room 4 The exhaust duct A9 that communicates with the ventilation air conditioner 6 and the exhaust duct B11 that communicates with the toilet 5 and the ventilation air conditioner 6 are connected to the suction side of the sirocco fan 12 for ventilation.

  Therefore, when the ventilation sirocco fan 12 is operated, the air in the dressing room 4 and the toilet 5 is sucked into the ventilation sirocco fan 12 from the exhaust port A8 and the exhaust port B10 through the exhaust duct A9 and the exhaust duct B11, and is outdoors through the outdoor exhaust duct 7. To be discharged. When the sirocco fan 12 for ventilation is continuously operated, the inside of the living space 1 becomes negative pressure, so that fresh outside air is supplied from the air supply opening 13 opened on the wall facing the outside of the living room 2 to ventilate the living space 1. Will be. Since this ventilation operation needs to be carried out continuously when the airtightness of the building is high (24 hours ventilation), the ventilation sirocco fan 12 has a predetermined ventilation volume, for example, about half the volume of the living space 1 in one hour. Operate continuously to ensure the corresponding ventilation. The living room 2 is provided with an air conditioner 14 for controlling the temperature of the room. The air conditioner 14 is used for cooling in the summer and heating in the winter to keep the room temperature properly. Therefore, as described above, when continuous ventilation operation is performed throughout the year, the low temperature air cooled by the air conditioner 14 in the living room 2 in the summer and the high temperature air heated by the air conditioner 14 in the winter are in the dressing room 4. The air is sucked into the exhaust port A8 and the exhaust port B10 through the louver and undercut portions of the door A15 and the door B16 of the toilet 5, and is discharged to the outside through the ventilation air conditioner 6.

  FIG. 2 is a schematic diagram showing a schematic configuration of the ventilation air-conditioning apparatus according to Embodiment 1 of the present invention. As shown in the figure, the ventilation air conditioner 6 includes an exterior body 17 and a front panel 18 that form an outer shell, a circulation air passage 19 provided in the exterior body 17, a ventilation air passage 20 and a refrigerant circuit 21, and an exterior body 17. A ventilation unit 23 is provided on one surface and connected to an opening 22 communicating with the ventilation air flow path 20, and a control device 24 that controls these units. Each specific configuration will be described below.

  As shown in FIG. 3, the front panel 18 forming the bathroom side of the exterior body 17 includes a suction port 25 for sucking air in the bathroom 3, and a blower for blowing circulating air in the bathroom to the outside of the exterior body 17. An outlet 26 is provided. Moreover, the filter 27 is provided in the exterior body 17 side of the suction inlet 25, and it has the structure which prevents the penetration | invasion of a fine dust and dust when circulating the air in a bathroom. Further, an outlet louver 28 for changing the direction of blowing heated air is provided at the outlet 26, and the outlet louver 28 is connected to a control device 24 (not shown in FIG. 3). By operating freely by the blower outlet louver driving motor 29, the blowing direction can be varied in an arbitrary direction.

  The ventilation unit 23 shown in FIG. 4 is provided on the suction side of the ventilation sirocco fan 12 connected to a ventilation fan drive motor 30 whose rotation speed can be freely changed by a control device 24 (not shown in FIG. 4). The bathroom outside suction port A31 connected to the exhaust duct A9 connected to the dressing room 4 and the bathroom outside suction port B32 connected to the exhaust duct B11 connected to the toilet 5 and the blowing side of the ventilation sirocco fan 12 It is comprised from the bathroom outer side blower outlet 33 connected with the outdoor exhaust duct 7 connected to the outdoor. Further, an exterior body side air outlet 35 that is connected to the ventilation unit side air inlet 34 and an exterior body side air inlet 37 that is connected to the ventilation unit side air outlet 36 are provided on the connection surface with the exterior body 17, and a sirocco fan for ventilation is provided. 12 is provided with an exterior body side suction port 37, and has an air passage configuration including an exterior body side air outlet 35 via a ventilation air passage (not shown in FIG. 4) in the exterior body 17.

  When the air sucked from the bathroom outside suction port A31 and the bathroom outside suction port B32 is ventilated without being circulated into the exterior body 17, the exterior body side suction part damper 38 and the exterior body side provided in the exterior body side suction port 37 part are provided. The ventilation body sirocco fan 12 is operated by setting the air passage configuration in which the exterior body side blowing portion damper 39 provided in the blowing portion 35 is closed. When the air sucked from the other chamber is exhausted through the exterior body 17, the exterior body side suction part damper 38 provided in the exterior body side suction port 37 part and the exterior body side blowing part provided in the exterior body side air outlet 35 part. The damper 39 is set to an open air path configuration, and the sirocco fan 12 for ventilation is operated. The ventilation volume is adjusted by changing the opening area of each damper and controlling the rotational speed of the sirocco fan 12 for ventilation, and the necessary ventilation volume is realized by combining these.

  FIG. 5 is an air path configuration diagram and a refrigerant circuit diagram of the ventilation air conditioner according to the embodiment of the present invention. As shown in the drawing, a circulation air passage 40 indicated by a black arrow in the drawing connecting the suction port 25 and the air outlet 26 of the front panel 18 is provided in the exterior body 17, and is provided in the circulation air passage 40. The circulating sirocco fan 42 as the blowing means connected to the circulating fan drive motor 41 whose rotation speed can be freely changed by the control device 24 (not shown in FIG. 5) rotates to circulate. Air is blown into the air passage 40. A ventilation unit side suction port 34 and a ventilation unit side air outlet 36 are formed on the surface of the exterior body 17 on the connection side of the ventilation unit 23, and an exterior body side air outlet 35 and an exterior body side air inlet 37 on the ventilation unit 23 side, respectively. Since it is configured to be connected, by activating the ventilation sirocco fan 12 provided in the ventilation unit 23, the ventilation unit side suction port 34 and the ventilation unit side outlet 36 are communicated with each other by a white arrow in the figure. Air is blown into the ventilation air passage 43. In addition, a plurality of dampers for changing the air path configuration are provided in the exterior body 17, and each damper is opened and closed to a desired opening degree so as to achieve an air path configuration in accordance with the driving operation.

  In addition, for example, HCFC-based refrigerant (including chlorine, hydrogen, fluorine, and carbon atoms in the molecule) and HFC-based refrigerant (including hydrogen, carbon, and fluorine atoms in the molecule) as the refrigerant in the exterior body 17. ), A refrigerant circuit 21 filled with any of natural refrigerants such as hydrocarbon and carbon dioxide is formed, and in this refrigerant circuit 21, a compressor 44 for compressing the refrigerant, supply air and the refrigerant are heated. A first heat exchanger 45 to be exchanged, an expansion mechanism 46 composed of an electronic expansion valve for expanding the refrigerant, and a second heat exchanger 47 for exchanging heat between the supply air and the refrigerant are provided. In the refrigerant circuit 21, the refrigerant compressed by the compressor 44 flows in the order of the first heat exchanger 45, the expansion mechanism 46, and the second heat exchanger 47 and returns to the compressor 44 again. Further, in the refrigerant circuit 21, the refrigerant compressed by the compressor 44 flows in the order of the first heat exchanger 45, the expansion mechanism 46, and the second heat exchanger 47 and returns to the compressor 44 again (hereinafter referred to as the order). Cycle) and a path (hereinafter referred to as reverse cycle) in which the refrigerant compressed by the compressor 44 flows in the order of the second heat exchanger 47, the expansion mechanism 46, and the first heat exchanger 45 and returns to the compressor 44 again. For this purpose, a flow path switching valve 48 comprising a four-way valve is provided.

  Next, each operation | movement operation | movement of a ventilation air conditioner is demonstrated in order.

  First, the operation during the ventilation operation will be described. The ventilation operation is an operation of continuously operating for 24 hours in order to secure the necessary ventilation amount of the living space 1, and during this operation, the rotation speed is low enough to secure the necessary ventilation amount of the sirocco fan 12 for ventilation. As shown in FIG. 6, the airway configuration damper A49 is closed, the airway configuration damper B50 is opened, the airway configuration damper C51 is opened, and the exterior body side suction portion damper 38 is opened. By setting the exterior body side blowing portion damper 39 to be closed, the air in the bathroom 3 is exhausted from the outdoor exhaust duct 7 to the outside. At this time, it is possible to ventilate the dressing room 4 and the toilet 5 communicating with the ventilation unit 23 at the same time by opening the exterior body side blower damper 39, and fresh outside air corresponding to the exhausted amount is discharged into the living room. Ventilation of the living space 1 is performed by taking in from the air supply opening 13 opened to 2 and replacing the exhaust air.

  Next, the operation at the time of heating operation in the bathroom 3 will be described. Heating operation is used for pre-bathing preheating to reduce heat shock by heating the inside of the bathroom 3 before bathing in the low temperature season such as winter, or when washing the body in the washing place of the bathroom 3 This is an operation to be performed when heating is performed so that a person can comfortably bathe without feeling cold.

  In this case, as shown in FIG. 7, the airway configuration damper A49 is closed, the airway configuration damper B50 is opened, the airway configuration damper C51 is closed, the exterior body side suction portion damper 38 is opened, and the exterior body side blowing is performed. By setting the part damper 39 to be open, the first heat exchanger 45 is disposed in the circulation air passage 40 and the second heat exchanger 47 is disposed in the ventilation air passage 43. For this reason, the refrigerant in the refrigerant circuit 21 is circulated by operating the compressor 44 in a forward cycle, and the second heat exchanger 47 is supplied to the air passing through the ventilation air passage 43 by operating the sirocco fan 12 for ventilation. In the first heat exchanger 45, the refrigerant absorbs heat and the circulating sirocco fan 42 is operated to radiate heat in the first heat exchanger 45 to the air circulating in the bathroom 3 through the circulation air passage 40. Air is heated by this heat radiation, and is blown out into the bathroom 3 from the outlet 26. By performing such a driving operation, it is possible to blow out high-temperature air, and the interior of the bathroom 3 can be heated by increasing the temperature in the bathroom 3.

  In addition, when the outside air temperature in winter is very low, the temperature of the air in the dressing room 4 and the toilet 5 supplied to the second heat exchanger 47 by the ventilation sirocco fan 12 is also low, so that the heating operation described above is being performed. In addition, a frosting phenomenon occurs in which frost adheres to the second heat exchanger 47. If this frosting state is left as it is, the heat dissipation capacity of the second heat exchanger 47 is reduced, so that the amount of heat released from the first heat exchanger 45 is reduced and the bathroom 3 cannot be sufficiently heated. In order to suppress such a problem, the temperature of the refrigerant pipe of the second heat exchanger 47 is monitored during the heating operation, and frost adhering to the second heat exchanger 47 at the stage when the temperature is lowered to a predetermined value or less. It is necessary to perform the defrosting operation to remove.

  Next, the operation during the defrosting operation will be described. When performing the defrosting operation during the heating operation, first, the operation of both the circulation sirocco fan 42 and the ventilation sirocco fan 12 is stopped, and the setting of the flow path switching valve 48 is switched from the forward cycle to the reverse cycle. By performing this setting, the high-temperature and high-pressure refrigerant compressed by the compressor 44 is guided to the second heat exchanger 47 through the flow path switching valve 48 switched to the reverse cycle side. When the high-temperature refrigerant flows through the refrigerant pipe of the second heat exchanger 47, the pipe temperature rises and frost attached to the surface is dissolved. The melted frost becomes condensed water 52 and is dripped and stored in the water storage unit 53. On the other hand, the refrigerant that has dissipated heat and melted frost in the second heat exchanger 47 flows in order through the expansion mechanism 46 and the first heat exchanger 45, returns to the compressor 44, and circulates in the refrigerant circuit 21. By continuing this defrosting operation, the frost attached to the second heat exchanger 47 is melted and the piping temperature rises. This pipe temperature is continuously monitored, and when the pipe temperature rises to a predetermined value or higher (for example, 3 ° C.), the defrosting operation is switched to the heating operation again. Thereby, it becomes possible to perform sufficient preliminary heating while suppressing an extreme decrease in heating capacity at low temperatures. Note that this defrosting operation is not a countermeasure only during the heating operation, and when frost adheres to the second heat exchanger 47 in each operation operation, the operation can be solved by operating this operation. it can.

  Next, the operation during the dehumidifying operation in the bathroom 3 will be described. The dehumidifying operation is an operation that is performed when the bathroom 3 is dehumidified to prevent mold after bathing or when clothes are dried by drying the laundry in the bathroom 3.

  In this case, as shown in FIG. 8, the air passage constitution damper A49 is opened, the air passage constitution damper B50 is closed, the air passage constitution damper C51 is opened, the exterior body side suction portion damper 38 is closed, and the exterior body side blowing is performed. By setting the part damper 39 closed, the first heat exchanger 45 is disposed in the circulation air passage 40, and the second heat exchanger 47 is provided in both the circulation air passage 40 and the ventilation air passage 43. It arrange | positions in the position which interposes. For this reason, the refrigerant in the refrigerant circuit 21 is circulated by operating the compressor 44 in a forward cycle, and the air circulating in the bathroom 3 through the circulation air passage 40 is operated by operating the sirocco fan 42 for circulation. First, the refrigerant absorbs heat in the second heat exchanger 47 that passes through, and then the refrigerant radiates heat when passing through the first heat exchanger 45. When the circulating air in the bathroom 3 passes through the second heat exchanger 47, it is absorbed by the refrigerant, so that the temperature of the air decreases, and moisture in the air condenses on the surface of the second heat exchanger 47, so that Humidity decreases. Here, the water droplets condensed on the surface of the second heat exchanger 47 become drain water and are dropped and stored in the water storage unit 53. Since the air that has become low humidity is radiated from the refrigerant in the first heat exchanger 45 that passes next, the air that has become high temperature and low humidity by this heat radiation blows out into the bathroom 3 from the outlet 26. By performing such an operation, high-temperature and low-humidity air can be blown out, and the temperature in the bathroom 3 rises, and the humidity in the bathroom 3 can be reduced to dehumidify the interior of the bathroom 3. When drying clothes, the direction of the wind that directly hits high-temperature and low-humidity air against the laundry that has been dried in the bathroom 3 promotes evaporation of moisture from the laundry and realizes drying of clothes in a short time. Become.

  In the above description, the ventilation air passage is closed during the dehumidifying operation and the air is not discharged outside the room. However, if the interior of the bathroom 3 can be made into a desired low humidity space, the ventilation sirocco fan 12 is used. Even if the dehumidifying operation is performed while ventilating the air in the bathroom 3 by opening the ventilation air passage with a low rotation speed, there is no difference in the operation effect, and preferably fresh air can be taken in. In this configuration, the dehumidifying operation is performed with some ventilation.

  Next, the operation | movement at the time of the humidification heating operation in the bathroom 3 is demonstrated. The humidifying and heating operation is an operation that is performed when the inside of the bathroom 3 is in a high-temperature and high-humidity sauna environment.

  As shown in FIG. 9, the air passage configuration at that time is closed, the air passage constitution damper A49 is closed, the air passage constitution damper B50 is opened, the air passage constitution damper C51 is closed, the exterior body side suction portion damper 38 is opened, and the exterior body side blowout By setting the part damper 39 to be open, the first heat exchanger 45 is disposed in the circulation air passage 40 and the second heat exchanger 47 is disposed in the ventilation air passage 43. For this reason, the refrigerant in the refrigerant circuit 21 is circulated by operating the compressor 44 in a forward cycle, and the second heat exchanger 47 is supplied to the air passing through the ventilation air passage 43 by operating the sirocco fan 12 for ventilation. In the first heat exchanger 45, the refrigerant absorbs heat and the circulating sirocco fan 42 is operated to radiate heat in the first heat exchanger 45 to the air circulating in the bathroom 3 through the circulation air passage 40. As means for generating fine water droplets for humidifying the air, a fine water droplet generator 54 is provided in the exterior body 17. Hereinafter, a specific configuration of the fine water droplet generator 54 will be described.

  In the fine water droplet generator 54 shown in FIG. 10, a fine water droplet generator air passage 57 that communicates the fine water droplet generator inlet 55 and the fine water droplet generator outlet 56 is provided. 57 is connected to a fine water droplet generator fan drive motor 58 provided on the fine water droplet generator suction port 55 side, the rotational speed of which can be freely changed by a control device 24 (not shown in FIG. 10). The fine water droplet generator sirocco fan 59 as a blowing means rotates to blow air into the fine water droplet generator 54. A fine water droplet generator sirocco fan 59 is provided with a PTC heater 60 as a heat exchanger for air heating as a heating means, and air flowing from the exterior body 17 through the PTC heater 60 is heated. It becomes possible to blow high-temperature air. A spray nozzle 61 is provided on the downstream side of the fine water droplet generation unit sirocco fan in the fine water droplet generation unit air passage 57, and warm water (from the humidification water supply pipe 62 for supplying humidification water supply to the spray nozzle 61) For example, 40 to 80 ° C.) is supplied, and the supplied hot water is sprayed as fine water droplets from the spray nozzle 61. The sprayed fine water droplets are further refined by colliding with the wall surface of the fine water droplet generator 54. Here, fine water droplets (for example, a water droplet diameter of 100 μm or less) are blown out along with the air to be blown from the fine water droplet generator outlet 56 to the circulation air passage 40, supplied to the circulating air in the bathroom, and broken into fine water droplets. Regarding the water droplets that could not be formed, the water drops headed to the water storage section 53 as surplus water 64. Among the fine water droplets carried with the blown air, water droplets having a relatively large water droplet diameter (for example, a water droplet diameter of 10 to 100 μm) are provided on the fine water droplet generator outlet 56 side of the fine water droplet generator air passage 57. The gas is collected by the gas-liquid separation unit 63 serving as a collecting unit, becomes surplus water 64, and goes to the water storage unit 53. Fine water droplets (water droplet diameter of 10 μm or less) that have passed through the gas-liquid separation unit 63 are blown out to the circulation air passage 40 from the fine water droplet generation unit outlet 56 together with the air heated by the PTC heater 60 and supplied to the circulating air in the bathroom. The

  The air in the circulation air passage 40 supplied with humidified air containing fine water droplets is further radiated from the refrigerant in the first heat exchanger 45 so that the air is heated and blown out from the outlet 26 into the bathroom 3. . By performing such a driving operation, high-temperature and high-humidity air can be blown out, and the temperature and humidity in the bathroom 3 can be increased to humidify and heat the bathroom 3.

  Next, the operation during the cooling operation in the bathroom 3 will be described. The cooling operation is an operation performed when performing a cool-down after bathing in summer.

  In this case, as shown in FIG. 11, the airway configuration damper A49 is closed, the airway configuration damper B50 is opened, the airway configuration damper C51 is closed, the exterior body side suction portion damper 38 is opened, and the exterior body side. The first heat exchanger 45 is disposed in the circulation air passage 40 and the second heat exchanger 47 is disposed in the ventilation air passage 43 by setting the blowout portion damper 39 to be open. Here, the setting of the flow path switching valve 48 is switched from the forward cycle to the reverse cycle. By performing this setting, the high-temperature and high-pressure refrigerant compressed by the compressor 44 circulates in the reverse cycle direction. Therefore, the second sirocco fan 12 for ventilation is operated with respect to the air passing through the ventilation air duct 43. The refrigerant dissipates heat in the heat exchanger 47, and the refrigerant absorbs heat in the first heat exchanger 45 with respect to the air circulating in the bathroom 3 through the circulation air passage 40 by operating the sirocco fan 42 for circulation. . Air is cooled by this heat absorption, and it blows out into the bathroom 3 from the blower outlet 26. By performing such a driving operation, it becomes possible to blow out low-temperature air, and the temperature in the bathroom 3 is lowered, so that the inside of the bathroom 3 can be cooled.

  As described above, in each operation described above, when air passes through the heat exchanger where the refrigerant absorbs heat, water droplets are formed on the surface of the heat exchanger. That is, the dew condensation water 52 is generated on the second heat exchanger 47 side during the heating operation and the dehumidifying operation, and on the surface on the first heat exchanger 45 side during the defrosting operation and the cooling operation. Therefore, the water storage part 53 for storing the dew condensation water 52 by which the water | moisture content condensed on the heat exchanger surface was dripped at the lower part of the 1st heat exchanger 45 and the 2nd heat exchanger 47 is provided. In the apparatus, when the water storage unit 53 is installed at a high position, the stored water 65 stored in the water storage unit 53 is drained from the drainage path 66 to the outside of the bathroom 3 using a downward slope. The larger the angle of the downward slope of the drainage path 66, the better. However, it is desirable to ensure that the stored water 65 in the water storage section 53 is drained by ensuring a slope of 5 ° or more. When the water reservoir 53 cannot be installed at a high position, that is, when either the first heat exchanger 45 or the second heat exchanger 47 cannot be installed at a high position, the stored water 65 is drained into the water reservoir 53. A drainage drain pump 67 is installed.

  In order for the dew condensation water 52 generated on the surface of the heat exchanger to be stored in the water storage portion 53, it remains on the surface of the heat exchanger due to a certain amount of time until it falls to the water storage portion 53 from the heat exchanger and the surface tension. It is necessary to circulate the air for guiding the condensed water 52 to be entrained to the water storage portion 53, that is, a considerable amount of the condensed water 52 remains on the surface of the heat exchanger at the end of the operation. If the remaining moisture is left as it is, it becomes a source of mold, various germs, and off-flavors, so it is necessary to provide means for drying the heat exchanger surface. The operation at the time of the in-device drying operation by air blowing for drying the heat exchanger surface will be described below.

  As shown in FIG. 12 (a), the airway configuration damper A49 is opened, the airway configuration damper B50 is closed, the airway configuration damper C51 is closed, the exterior body side suction portion damper 38 is closed, and the exterior body side blowout portion damper 39 is opened. When the ventilation sirocco fan 12 is set to open and the sirocco fan 12 for ventilation is operated, the air in the bathroom 3 is exhausted from the outdoor exhaust duct 7 to the outside through the second heat exchanger 47. Further, as shown in FIG. 12 (b), the airway configuration damper A49 is closed, the airway configuration damper B50 is closed, the airway configuration damper C51 is closed, the exterior body side suction portion damper 38 is closed, and the exterior body side blowout portion damper 39 is closed. When the air outlet louver 28 is closed and the ventilation sirocco fan 12 is operated, the air in the bathroom 3 is exhausted from the outdoor exhaust duct 7 to the outside through the first heat exchanger 45. In an environment where the bathroom 3 is in a high temperature and low humidity atmosphere for reasons such as after heating operation or after dehumidifying operation, the high temperature and low humidity air passes through the heat exchanger by adopting such an air passage configuration. Promotes drying. In addition, when the interior of the bathroom 3 is not so hot and low in humidity, or when it is desired to prevent the inflow of air from a gap in the bathroom 3 or the like, the air passage configuration as shown in FIG. 7 should be adopted. Then, when the ventilation sirocco fan 12 is operated, the air in the dressing room 4 and the toilet 5 from the exhaust port A8 and the exhaust port B10 through the exhaust duct A9 and the exhaust duct B11 passes through the second heat exchanger 47 and the outdoor exhaust duct 7. It is discharged outdoors through.

  In addition to the above-described drying by blowing air, the surface of the heat exchanger is heated, so that the drying time can be shortened, and the portion where the inflow of air is difficult can also be performed. The method will be described below.

  In each operation, the condensed water 52 is generated on the surface of the heat exchanger on the heat exchanger on the side where the refrigerant is absorbing heat in the refrigerant circuit 21. When the compressor 44 is operated by switching the setting of the flow path switching valve 48 to the opposite side after the operation is finished, the refrigerant of the heat exchanger on the side where the refrigerant is absorbing heat releases heat, and this heat exchanges heat. The condensed water 52 on the vessel surface can be dried. Alternatively, by adjusting the valve opening degree of the expansion mechanism 46 composed of an electronic expansion valve that expands the refrigerant in the refrigerant circuit 21, the refrigerant temperature after passing through the expansion mechanism 46 does not become low, so that the refrigerant absorbs heat. The refrigerant of the heat exchanger on the side where the heat treatment is performed releases heat, and the condensed water 52 on the surface of the heat exchanger can be dried by this heat. Further, if a heater is installed as a new heat source in the vicinity of the portion to be dried, a desired location can be arbitrarily dried, so that the condensed water 52 remaining on the surface of the heat exchanger can be efficiently removed. Drying is possible. In addition, the vicinity here is within a range where the heat of the heater reaches, and when air is circulating to the drying object, it is desirable to be installed upstream of the drying object. .

  As described above, when the various heat exchanger surface heating methods shown here are used, the drying time can be shortened, but a large amount of condensed water 52 still remains on the heat exchanger surface. In the first, by reducing the condensed water 52 remaining on the surface of the heat exchanger by drying by blowing, and then performing drying by heating, the state where moisture such as the condensed water 52 remains on the surface of the heat exchanger is prevented, It becomes possible to suppress generation | occurrence | production of mold | fungi, various germs, and a bad smell, and to aim at reduction of power consumption.

  Further, whether or not the surface of the heat exchanger has been dried after a lapse of a certain time since the start of the in-device drying operation is determined by detection by the humidity sensor 68 provided in the ventilation air conditioner 6, and the control method is as follows. explain.

  FIG. 13A shows a configuration including humidity sensors 68 on the upstream side and the downstream side of the heat exchanger to be dried. According to this configuration, the humidity of the air before and after passing through the heat exchanger is detected, and if the difference in humidity between the two is within a set range (for example, within 2%), the heat exchanger to be dried is dry. It is possible to use a control method such as stopping the operation.

  FIG. 13B shows a configuration including a temperature / humidity sensor 69 on the downstream side of the heat exchanger to be dried. According to this configuration, the temperature and humidity of the air after passing through the heat exchanger is detected, and if the detected temperature and humidity become a preset temperature and humidity, the apparatus is considered to be dry and the operation is stopped. Can be used. As the temperature and humidity set in advance, the temperature and humidity that air is considered to be dry is calculated from the air diagram.

  FIG. 13C shows a configuration including a temperature / humidity sensor 69 on the upstream side of the heat exchanger to be dried. According to this configuration, when the temperature and humidity of the air before passing through the heat exchanger is detected, and the air of the detected temperature and humidity is circulated through the heat exchanger and dried, how much time is required. By calculating in advance from experiments and setting the conditions, it is possible to use a control method in which it is determined that drying is complete after a set time operation.

  Moreover, in this Embodiment, although the drying operation in an apparatus is implemented as a means to dry the dew condensation water 52 which generate | occur | produced on the heat exchanger surface part after each driving | operation operation | movement, the ventilation air conditioner 6 is the ceiling of the bathroom 3. Since it is configured to be installed on the back side, it is suggested that condensed water 52 may be generated on the surface of the heat exchanger even when the apparatus is stopped due to steaming in the bathtub or when bathing in the shower. Is not limited to after each operation, even when the device has been stopped for a long period of time, when a certain period of time has elapsed (for example, one week), a periodic operation control such as executing a drying operation within the device, When the installed humidity sensor 68 detects a preset humidity (for example, 90%), an operation control is performed such that an in-apparatus drying operation is performed, so that moisture such as condensed water 52 remains on the surface of the heat exchanger. A state of preventing, it is possible to suppress mold and bacteria, the generation of an odor.

  The contents described above are only described for one mode for carrying out the invention, and the present invention is not limited to the above embodiment.

  For example, in the above-described embodiment, the indoor space to be air-conditioned is the bathroom 3, and the indoor space having the exhaust port opened is the dressing room 4 and the toilet 5. However, the air-conditioned space and the space opening the exhaust port are in the living space. Any partitioned space may be used, and the present invention is not limited to the above. That is, the air-conditioned space may be set in the living room 2, and the space that opens the exhaust port may be set in the bathroom 3.

  Moreover, in the said embodiment, although the structure which opens an exhaust port in two places, the dressing room 4 and the toilet 5, was shown, the opening position and number of exhaust ports are not limited to this. For example, it is good also as a structure which opens an exhaust port only in one places, such as the toilet 5. FIG.

  Moreover, in the said embodiment, although it was set as the structure of the multi-room ventilation type which also ventilates another room simultaneously, even if it is a type which ventilates only the object space (for example, bathroom 3), there is no problem, and ventilation of another room By changing the configuration that has absorbed heat by performing the configuration to the configuration that absorbs heat from the circulating air in the bathroom 3, there is no difference in the effect.

  Moreover, in the said embodiment, although it was set as the structure which heat-absorbs and heats by ventilating another room, the air path which connects the suction inlet 25 and the 2nd heat exchanger 47 is provided, and the inside of the bathroom 3 is provided. Even if it is configured to absorb the heat by passing the sucked air through the second heat exchanger 47 and to dissipate heat in the first heat exchanger 45 and return it to the bathroom, the effect is not significant.

  Moreover, in the said embodiment, although the opening and closing by a damper for changing an air path structure was only two ways, an open state and a closed state, the air volume adjustment and temperature at each driving | operation are adjusted by adjusting the opening degree of a damper. Adjustment is possible.

  Further, in the above embodiment, the damper structure is provided as a means for changing the air path configuration, but it is not limited to this as long as the air path can be opened and closed.

  Moreover, in the said embodiment, although it was set as the structure which performs a defrost operation by switching the operation method of the refrigerant circuit 21 from a forward cycle operation to a reverse cycle operation, the frost adhering to the 2nd heat exchanger 47 surface can be removed. If there is no problem, there is no problem even if a method of supplying hot water to the surface of the second heat exchanger 47 or a method of providing a heater for defrosting is used.

  Further, in the above embodiment, the above embodiment does not mention the driving method of the compressor 44, but the driving method of the compressor 44 uses a constant driving frequency but a variable driving frequency. May be.

  Moreover, in the said embodiment, although it was set as the structure which each separated with the exterior body 17, the front panel 18, and the ventilation unit 23, if construction property and a function are not impaired, it is the structure by which all were integrated. There is no problem, and there is no difference in the effect.

  Moreover, in the said embodiment, although the motor which drives a sirocco fan used the motor which can change rotation speed freely by the control apparatus 24, it should just be changeable to at least 2 or more types of rotation speed, There is no difference in the effect. Desirably, the motor is preferably a motor that can linearly change the rotational speed to an arbitrary rotational speed. Further, when the operation is performed under constant conditions without changing various settings, there is no problem even if the motor is driven only at a constant rotational speed, and there is no difference in the operation effect.

  In the above embodiment, a sirocco fan is used as the air blowing means. However, another fan such as a crossflow fan, a turbo fan, or a propeller fan may be used as long as air flow, power consumption, noise, vibration, and the like are satisfied. However, there is no problem, and no difference is produced in the function and effect.

  Moreover, in the said embodiment, although it was set as the structure which humidifies by spraying warm water, when a bathroom is small (about 0.5 tsubos) and does not require so much humidification, it is normal temperature (about 20 degreeC). ) Tap water, etc., and there is no difference in the effect, and it is preferably sprayed from the spray nozzle 61 so that the bathroom has the desired temperature and humidity according to the size of the bathroom and the temperature atmosphere outside the bathroom. It is desirable to appropriately set the temperature of the humidifying water to be used.

  Moreover, in the said embodiment, although the water droplet diameter which passes the gas-liquid separation part 63 was 10 micrometers or less, the water droplet diameter should just be a water droplet diameter of 100 micrometers or less, passes the gas-liquid separation part 63, and is supplied in a bathroom. It is desirable that the water droplet size be such that the bather can take a bath without feeling a water droplet feeling, and in general, most people do not feel the water droplet feeling by setting the water droplet size to about 10 μm or less. You can take a bath.

  Moreover, in the said embodiment, although it was set as the structure which judges the dry state by the control method which detects the temperature / humidity before and behind passage of a heat exchanger by the humidity sensor 68 or the temperature / humidity sensor 69, if the dry state can be judged. There is no problem even if a method for detecting only the temperature or a method using a humidity detecting material is used, and there is no difference in its effect.

  As described above, the ventilation air-conditioning apparatus according to the present invention prevents moisture remaining on the heat exchanger surface, such as condensed water, and suppresses generation of mold, germs, and off-flavors. The present invention can be applied not only to air conditioning but also to ventilation air conditioners in living rooms, bedrooms, kitchens, and washrooms.

The sketch of the migration space where the ventilation air conditioner in Embodiment 1 of this invention is installed Schematic configuration diagram of the ventilation air conditioner Front panel schematic of the ventilation air conditioner Schematic diagram of ventilation unit of the ventilation air conditioner Airway configuration diagram and refrigerant circuit diagram of the ventilation air conditioner Airway configuration diagram and refrigerant circuit diagram during ventilation operation of the ventilation air conditioner Airway configuration diagram and refrigerant circuit diagram during heating operation of the ventilation air conditioner Airway configuration diagram and refrigerant circuit diagram during dehumidification operation of the ventilation air conditioner Airway configuration diagram and refrigerant circuit diagram during humidification heating operation of the ventilation air conditioner Schematic diagram of the fine water droplet generator of the ventilation air conditioner Airway configuration diagram and refrigerant circuit diagram during cooling operation of the ventilation air conditioner Air path configuration diagram during drying operation in the ventilation air conditioner ((a) Air path configuration diagram through the second heat exchanger, (b) Air channel configuration diagram through the first heat exchanger) Configuration diagram in which humidity sensor and temperature / humidity sensor are provided in the heat exchanger ((a) Configuration diagram in which humidity sensors are installed on the upstream side and downstream side of the heat exchanger, (b) In the downstream side of the heat exchanger Configuration diagram with temperature / humidity sensor installed, (c) Configuration diagram with temperature / humidity sensor installed upstream of the heat exchanger)

Explanation of symbols

1 Living Space 2 Living 3 Bathroom 4 Dressing Room 5 Toilet 6 Ventilation Air Conditioner 7 Outdoor Exhaust Duct 8 Exhaust A
9 Exhaust duct A
10 Exhaust port B
11 Exhaust duct B
12 Sirocco fan for ventilation 13 Air supply port 14 Air conditioner 15 Door A
16 Door B
DESCRIPTION OF SYMBOLS 17 Exterior body 18 Front panel 19 Circulation ventilation path 20 Ventilation ventilation path 21 Refrigerant circuit 22 Opening part 23 Ventilation unit 24 Control apparatus 25 Inlet 26 Outlet 27 Filter 28 Outlet louver 29 Outlet louver drive motor 30 For ventilation fan drive Motor 31 Bathroom outside inlet A
32 Bathroom outside inlet B
33 Outer bathroom outlet 34 Ventilation unit side inlet 35 Exterior body side outlet 36 Ventilation unit side outlet 37 Exterior body side inlet 38 Exterior body side suction part damper 39 Exterior body side outlet part damper 40 Circulation air passage 41 Circulation fan drive motor 42 Circulating sirocco fan 43 Ventilation air passage 44 Compressor 45 First heat exchanger 46 Expansion mechanism 47 Second heat exchanger 48 Channel switching valve 49 Air channel configuration damper A
50 Airway configuration damper B
51 Airway configuration damper C
52 Condensed Water 53 Water Storage Unit 54 Fine Water Drop Generation Unit 55 Fine Water Drop Generation Unit Suction Port 56 Fine Water Drop Generation Unit Blowout 57 Fine Water Drop Generation Unit Blowing Path 58 Fine Water Drop Generation Unit Fan Drive Motor 59 Fine Water Drop Generation Unit Sirocco Fan 60 PTC Heater 61 Spray nozzle 62 Humidification water supply pipe 63 Gas-liquid separator 64 Excess water 65 Reserved water 66 Drainage route 67 Drain drain pump 68 Humidity sensor 69 Temperature / humidity sensor

Claims (18)

A suction port that sucks air in the bathroom, a circulation air passage that blows air sucked from the suction port, a circulation fan that sucks or blows air in the bathroom, and an air outlet that blows air into the bathroom A ventilation fan path provided with a ventilation fan that ventilates by sucking air from an exhaust port opened to an indoor space other than the bathroom and exhausting it outside the room, and compresses the refrigerant Piping is connected so that the refrigerant circulates in the order of the compressor, the first heat exchanger provided in the circulation air passage, the expansion mechanism for expanding the refrigerant, and the second heat exchanger provided in the ventilation air passage. In the ventilation air conditioner configured by the refrigerant circuit, the apparatus has an in-device drying operation function of drying moisture on the surface of the first heat exchanger and the surface of the second heat exchanger, and generates fine water droplets that humidify the air. Fine as a means Provided with a water droplet generator, humidified air containing fine water droplets is supplied by the micro water droplet generator to the air in the circulation air passage, heated by the first heat exchanger and blown into the bathroom, and humidified and heated in the bathroom And bathing in a sauna environment, provided with a flow path switching valve for reversing the circulation direction of the refrigerant in the refrigerant circuit, and performing cool-down after summer bathing by cooling operation by switching the flow path switching valve. Ventilating air conditioner. The ventilation air conditioner according to claim 1, wherein the drying operation in the apparatus is executed after the air conditioning operation in the bathroom is completed. The ventilation air conditioner according to claim 1 or 2, wherein an in-device drying operation is executed after a preset period. A humidity sensor for detecting humidity is provided, and when the apparatus is in a stopped state, when the humidity sensor provided in the apparatus exceeds a certain set value, the drying operation in the apparatus is automatically executed. The ventilation air conditioning apparatus in any one. The ventilation air conditioner according to any one of claims 1 to 4, further comprising an in-device drying operation mode in which a user can arbitrarily execute the in-device drying operation. A humidity sensor that detects humidity is provided in the device to detect the humidity of the air flowing through the device, and if the humidity detected by the humidity sensor reaches a preset value, the device is considered to have been dried. The ventilation air conditioner according to any one of claims 1 to 5, wherein Humidity sensors are provided upstream and downstream of the second heat exchanger, and the humidity sensor detects the humidity of the air before and after passing through the second heat exchanger. If the difference between the two is within a set range, heat exchange is performed. The ventilation air conditioner according to any one of claims 1 to 6, wherein the air conditioner is judged to be dry and the operation is stopped. A temperature / humidity sensor is provided on the downstream side of the second heat exchanger, the temperature / humidity sensor detects the temperature / humidity of the air after passing through the second heat exchanger, and the apparatus is set to a preset value according to the detected temperature / humidity. The ventilation air conditioner according to any one of claims 1 to 6, wherein the operation is stopped assuming that the inside has been dried. A temperature / humidity sensor is provided upstream of the second heat exchanger, and the temperature / humidity of the air before passing through the second heat exchanger is detected by the temperature / humidity sensor, and drying in the apparatus is performed for a preset time according to the detected temperature / humidity. The ventilation air conditioner according to any one of claims 1 to 6, wherein the ventilation air conditioner is operated. The ventilation air conditioner according to any one of claims 1 to 9, wherein the heat exchanger surface drying means is means utilizing heating. Means for increasing the temperature of the refrigerant passing through the second heat exchanger and drying the surface of the heat exchanger by adjusting the opening of the valve with an expansion mechanism that expands the refrigerant installed in the refrigerant circuit. The ventilation air conditioner according to claim 1, wherein the ventilation air conditioner is used as a ventilation air conditioner. The ventilation air conditioner according to any one of claims 1 to 10, wherein a heater is provided as a heat source in the vicinity of a heat exchanger to be dried and used as heating means for drying the surface of the heat exchanger. The ventilation air conditioner according to any one of claims 1 to 9, wherein the heat exchanger surface drying means is an air blowing means using a blower. 10. The apparatus is characterized in that the ventilation fan is operated so that air is passed through the heat exchanger to be dried from an exhaust port opened in an indoor space other than the bathroom to the outside to be dried. Or the ventilation air conditioner in any one of 13. 10. The apparatus according to claim 1, wherein the ventilation fan is operated to allow the air to be dried by passing air through a heat exchanger to be dried from a suction port that sucks air in the bathroom to the outside. The ventilation air conditioning apparatus in any one of 13. The ventilation air conditioner according to any one of claims 1 to 15, wherein the heat exchanger surface drying means is a combination of means using heating and air blowing means using a blower. The heat exchanger surface drying means is a combination of a means using heating and a blowing means using a blower, and immediately after the start of the drying operation in the apparatus, only drying by the blowing means using the blower is performed. The ventilation air conditioner in any one of thru | or 16. The heat exchanger surface drying means is a combination of a means using heating and a blowing means using a blower, and both the means using the heating and the blowing means using the blower are used immediately after the start of the in-device drying operation. The ventilation air conditioner according to any one of claims 1 to 17, wherein drying is performed.

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