JP6156245B2 - Ventilation device and ventilation air conditioning system - Google Patents

Description

  The present invention relates to a ventilation device and a ventilation air conditioning system.

  2. Description of the Related Art Conventionally, there is a ventilator that performs heat exchange between an exhaust flow from the room and a supply air flow from the outside via a heat exchanger while supplying and exhausting air. Some ventilators can switch the air path between an air path passing through the heat exchanger and a bypass air path bypassing the heat exchanger. Such a ventilator has a heat exchange ventilation mode in which heat is exchanged between the supply air flow and the exhaust flow by switching to the air path passing through the heat exchanger, and between the supply air flow and the exhaust flow by switching to the bypass air path. It has two ventilation modes of normal ventilation mode that does not perform heat exchange.

  Conventionally, as in Patent Document 1, for example, the indoor / outdoor temperature and relative humidity are detected, and the detected indoor / outdoor temperature and the indoor / outdoor enthalpy calculated from the detected temperature and relative humidity are used. And there is a control method for the ventilator that switches between the sensible heat exchange ventilation mode and the total heat exchange ventilation mode.

  Conventionally, for example, in a system in which an air conditioner and a ventilator operate in conjunction with each other as in Patent Document 2, when the room temperature is higher than the set temperature and the outside air temperature, the ventilator is set in the normal ventilation mode (non-heat exchange in Patent Document 2) Air conditioner that operates in the ventilation mode), and further reduces the load on the air conditioner by stopping the air conditioner and operating only the ventilator when the difference between the room temperature and the set temperature is less than the specified value. There is a ventilation system interlocking system.

JP 63-131940 A JP 2010-117084 A

  However, in the ventilation device control method described in Patent Document 1, the ventilation mode is switched based only on the indoor / outdoor temperature and the calculated indoor / outdoor enthalpy. For this reason, even if the enthalpy is high both indoors and outdoors, the vehicle is operated in the normal ventilation mode, which may increase the air conditioning load and impair energy saving.

  Moreover, the air conditioning apparatus / ventilator interlocking system described in Patent Document 2 uses only temperature for control determination. Therefore, for example, when the outside air temperature is low and the outside air relative humidity is high, the outside air is directly taken in the normal ventilation mode even when the outside air enthalpy is higher than the enthalpy of the room air. Therefore, the outside air with high humidity is taken in by ventilation, and the occupant's comfort is impaired.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining the ventilation apparatus and ventilation air conditioning system which can perform ventilation operation with high comfort and energy saving property.

  In the ventilator of the present invention, an air passage for exhausting indoor air to the outside and supplying outdoor air to the room is formed inside, and total heat exchange is performed between the indoor air to be exhausted and the outdoor air to be supplied. Switching means for switching the air path between a heat exchange ventilation mode to be performed and a normal ventilation mode in which total heat exchange is not performed, a storage unit that stores indoor target enthalpy in advance, and a room that measures the temperature of the room air A temperature measuring means, an indoor humidity measuring means for measuring the humidity of the indoor air, an outdoor temperature measuring means for measuring the temperature of the outdoor air, and an outdoor humidity measuring means for measuring the outdoor humidity, respectively. The indoor enthalpy is calculated from the indoor air temperature measured by the indoor temperature measuring means and the indoor air humidity measured by the indoor humidity measuring means, and the outdoor air temperature and the outdoor air temperature measured by the outdoor temperature measuring means are calculated. A calculation unit that calculates outdoor enthalpy from the humidity of outdoor air measured by the outdoor humidity measuring unit, and a control unit that controls the switching unit to switch between a heat exchange ventilation mode and a normal ventilation mode of the ventilation device. The control unit has a relationship between the indoor target enthalpy, the indoor enthalpy, and the outdoor enthalpy, the indoor target enthalpy <the outdoor enthalpy <the indoor enthalpy, the outdoor enthalpy <the indoor target enthalpy <the indoor enthalpy, Alternatively, if the indoor enthalpy <the outdoor enthalpy <the target enthalpy, the switching means is controlled to switch the air passage to the normal ventilation mode, and the control unit controls the indoor enthalpy <the indoor target enthalpy < The outdoor enthalpy, front In the case of indoor target enthalpy <the indoor enthalpy <the outdoor enthalpy, or the outdoor enthalpy <the indoor enthalpy <the indoor target enthalpy, the switching means is controlled to switch the air path to the heat exchange ventilation mode. It is characterized by.

  Further, the ventilation air conditioning system of the present invention ventilates the indoor air by exhausting it to the outside of the room, and supplies the outdoor air to the room, thereby exchanging the total heat between the exhausted room air and the supplied outdoor air. Ventilator capable of switching between heat exchange ventilation mode and normal ventilation mode without total heat exchange, an air conditioner that air-conditions the same room as the room in which the ventilator ventilates, and measures the temperature of the room air Indoor temperature measuring means, indoor humidity measuring means for measuring the humidity of the indoor air, outdoor temperature measuring means for measuring the temperature of the outdoor air, outdoor humidity measuring means for measuring the humidity of the outdoor air, The storage unit that stores the target enthalpy in advance, the indoor enthalpy is calculated from the indoor air temperature measured by the indoor temperature measuring means and the indoor air humidity measured by the indoor humidity measuring means, The outdoor enthalpy is calculated from the outdoor air temperature measured by the outdoor temperature measuring means and the outdoor air humidity measured by the outdoor humidity measuring means, and a predetermined value based on the indoor target enthalpy and compared to the indoor target enthalpy The control unit is configured to calculate a control reference enthalpy that is as low as possible, and a control unit that controls the ventilation device and the air conditioner, and the control unit includes the indoor target enthalpy, the indoor enthalpy, When the relationship between the outdoor enthalpy is the indoor target enthalpy <the outdoor enthalpy <the indoor enthalpy, the outdoor enthalpy <the indoor target enthalpy <the indoor enthalpy, or the indoor enthalpy <the outdoor enthalpy <the target enthalpy. Normal ventilation with the ventilation device The control unit switches to the indoor enthalpy <the indoor target enthalpy <the outdoor enthalpy <the indoor enthalpy <the indoor enthalpy <the indoor enthalpy <the indoor enthalpy < In any case, the ventilation device is switched to a heat exchange ventilation mode, and the control unit is configured such that the relationship between the indoor target enthalpy, the indoor enthalpy, and the outdoor enthalpy is the indoor target enthalpy <the outdoor enthalpy <the above It is a case of any of indoor enthalpy, the outdoor enthalpy <the indoor target enthalpy <the indoor enthalpy, or the indoor enthalpy <the outdoor enthalpy <the target enthalpy, and the outdoor enthalpy is the control. In the case where it is lower than the standard enthalpy, the air conditioning capacity of the air conditioner is lowered.

  Further, the ventilation air conditioning system of the present invention ventilates the indoor air by exhausting it to the outside of the room, and supplies the outdoor air to the room, thereby exchanging the total heat between the exhausted room air and the supplied outdoor air. Ventilator capable of switching between heat exchange ventilation mode and normal ventilation mode without total heat exchange, an air conditioner that air-conditions the same room as the room in which the ventilator ventilates, and measures the temperature of the room air Indoor temperature measuring means, indoor humidity measuring means for measuring the humidity of the indoor air, outdoor temperature measuring means for measuring the temperature of the outdoor air, outdoor humidity measuring means for measuring the humidity of the outdoor air, The storage unit storing the target enthalpy, the indoor target temperature in advance, the indoor air temperature measured by the indoor temperature measuring means and the indoor air humidity measured by the indoor humidity measuring means. Calculating the outdoor enthalpy from the outdoor air temperature measured by the outdoor temperature measuring means and the outdoor air humidity measured by the outdoor humidity measuring means, and compared with the indoor target enthalpy based on the indoor target enthalpy The control unit is configured to calculate a control reference enthalpy that is lower by a predetermined value, and a control unit that controls the ventilation device and the air conditioner, and the control unit includes the indoor target enthalpy and the The relationship between the indoor enthalpy and the outdoor enthalpy is the following: In either case, the conversion The apparatus is switched to the normal ventilation mode, and the control unit is configured to perform the indoor enthalpy <the indoor target enthalpy <the outdoor enthalpy, the indoor target enthalpy <the indoor enthalpy <the outdoor enthalpy, or the outdoor enthalpy <the indoor enthalpy <the indoor In any case of target enthalpy, the ventilator is switched to a heat exchange ventilation mode, and the control unit determines that the relationship between the indoor target enthalpy, the indoor enthalpy, and the outdoor enthalpy is the indoor target enthalpy <the outdoor Enthalpy <the indoor enthalpy, the outdoor enthalpy <the indoor target enthalpy <the indoor enthalpy, or the indoor enthalpy <the outdoor enthalpy <the target enthalpy, and the outdoor enthalpy. When the tarpy is lower than the control reference enthalpy and the indoor temperature is lower than the indoor target temperature, the air conditioning capability of the air conditioner is lowered.

  In the ventilator and the ventilation air conditioning system according to the present invention, the relationship between the indoor target enthalpy, the indoor enthalpy, and the outdoor enthalpy is such that the indoor target enthalpy <outdoor enthalpy <indoor enthalpy, outdoor enthalpy <indoor target enthalpy <indoor enthalpy, or indoor enthalpy. <Indoor enthalpy <target enthalpy, perform normal ventilation, and indoor enthalpy <indoor target enthalpy <outdoor enthalpy, indoor target enthalpy <indoor enthalpy <outdoor enthalpy, or outdoor enthalpy <indoor enthalpy <indoor target enthalpy In such a case, since heat exchange ventilation is performed, the indoor enthalpy can be brought close to the indoor target enthalpy by introducing outside air, and high energy saving and comfort can be achieved.

It is the schematic at the time of the heat exchange ventilation mode of the ventilation apparatus which concerns on this invention. It is the schematic at the time of the normal ventilation mode of the ventilation apparatus which concerns on this invention. 1 is a block diagram of a ventilation device according to Embodiment 1. FIG. 3 is a flowchart of ventilation mode automatic switching control according to Embodiment 1. FIG. It is the schematic which combined the ventilation apparatus and air conditioning apparatus which concern on Embodiment 1. FIG. It is the schematic which shows an example of the air_conditioning | cooling mode of a general air conditioning apparatus. It is the schematic which shows an example of the heating mode of a general air conditioning apparatus. It is the block diagram which showed the flow of the signal of a general air conditioning apparatus. It is the schematic which shows the ventilation air conditioning system which concerns on Embodiment 2. FIG. It is a block diagram of the ventilation air conditioning system which concerns on Embodiment 2. FIG. It is a flowchart figure of ventilation apparatus and air conditioning apparatus interlocking control of the ventilation air conditioning system which concerns on Embodiment 2. FIG. FIG. 10 is a flowchart of ventilator / air conditioner interlock control of the ventilation air-conditioning system according to Embodiment 3. It is the schematic which shows the ventilation air conditioning system which concerns on Embodiment 4. FIG. It is a block diagram of the ventilation air conditioning system which concerns on Embodiment 4. FIG.

Embodiment 1 FIG.
First, the configuration of the ventilation device 100 will be described. FIG. 1 is a schematic view of the ventilator according to the present invention in the heat exchange ventilation mode. FIG. 2 is a schematic view of the ventilator according to the present invention in the normal ventilation mode. The ventilation device 100 has a box structure covered with a main body casing 1, and an exhaust air inlet 2 and an air supply outlet 3 connected to an indoor space are provided on one side surface of the main body casing 1. Further, the other side surface of the main casing 1 is provided with an exhaust air outlet 4 and an air supply inlet 5 connected to the outdoor space.

  A total heat exchanger 6 is disposed inside the main casing 1. The total heat exchanger 6 is formed with a heat exchanger supply air passage and a heat exchanger exhaust air passage independently of each other, and the air flowing through the heat exchanger supply air passage and the air flowing through the heat exchanger exhaust air passage are arranged. Total heat exchange that exchanges heat and humidity between them is possible.

  Inside the main body casing 1, a supply air passage for connecting the supply air outlet 3 and the intake air inlet 5 via the heat exchanger supply air passage of the total heat exchanger 6, and heat exchange of the total heat exchanger 6. Exhaust air passages that connect the exhaust air inlet 2 and the exhaust air outlet 4 via the exhaust air passage are respectively formed. Further, a bypass air passage is formed so as to bypass the total heat exchanger 6, and is connected to a portion on the exhaust air inlet 2 side and a portion on the exhaust air outlet 4 side of the total heat exchanger 6 of the exhaust air passage. ing. Since the air flowing through the bypass air passage does not pass through the total heat exchanger 6, the total heat exchange with the air flowing through the heat exchanger supply air passage or the heat exchanger exhaust air passage is not performed.

  A supply air blower 7 is incorporated in the supply air passage. When the air supply blower 7 is driven, outdoor air is sucked in from the air supply intake port 5, passes through the heat exchanger supply air passage of the total heat exchanger 6, and enters the indoor space from the air supply outlet 3. It is supplied with air. An exhaust fan 8 is incorporated in the exhaust air passage. When the exhaust fan 8 is driven, the indoor air is sucked from the exhaust suction port 2, passes through the heat exchanger exhaust air passage or the bypass air passage of the total heat exchanger 6, and is opened to the outdoor space from the exhaust air outlet 4. Is exhausted.

  In the exhaust air passage, an air passage switching damper 9 is provided at a location upstream of the total heat exchanger 6, that is, at a connection location with the bypass air passage on the exhaust suction port 2 side. The air path switching damper 9 includes a position where the heat exchanger exhaust air path of the total heat exchanger 6 is opened and the bypass air path is blocked as shown in FIG. 1, and a heat exchanger of the total heat exchanger 6 as shown in FIG. This is an air path switching means capable of switching to either one of the position where the exhaust air path is blocked and the bypass air path is opened. When the air path switching damper 9 is in a position to open the heat exchanger exhaust air path of the total heat exchanger 6, the indoor air sucked from the exhaust air inlet 2 is exhausted from the heat exchanger of the total heat exchanger 6. Pass through the air path. Further, when the air path switching damper 9 is at a position where the bypass air path is opened, the exhaust air flows through the bypass air path in the room air sucked from the exhaust air inlet 2. That is, the air path switching damper 9 can switch whether the room air sucked from the exhaust air inlet 2 passes through the heat exchanger exhaust air path or the bypass air path of the total heat exchanger 6.

  Next, the ventilation mode of the ventilation apparatus 100 will be described. Ventilation modes are classified into two types, heat exchange ventilation mode and normal ventilation mode, depending on the position of the air path switching damper 9.

  In the heat exchange ventilation mode, the air path switching damper 9 is located at a position where the heat exchanger exhaust air path of the total heat exchanger 6 is opened and the bypass air path is blocked as shown in FIG. The room air passes through the heat exchanger exhaust air passage of the total heat exchanger 6 and is exhausted to the outdoor space. The outdoor air is sucked in from the air supply inlet 5, passes through the heat exchanger air supply passage of the total heat exchanger 6, and is supplied to the indoor space from the air supply outlet 3. Therefore, total heat exchange is performed between the indoor air passing through the heat exchanger supply air passage of the total heat exchanger 6 and the outdoor air passing through the heat exchanger exhaust air passage of the total heat exchanger 6. That is, the ventilator 100 in the heat exchange ventilation mode can ventilate the room by exchanging heat between the indoor air and the outdoor air.

  In the normal ventilation mode, the air path switching damper 9 is located at the position where the heat exchanger exhaust air path of the total heat exchanger 6 is blocked and the bypass air path is opened as shown in FIG. The air passes through the bypass air passage and is exhausted to the outdoor space. Therefore, heat exchange is not performed between the indoor air passing through the heat exchanger supply air passage of the total heat exchanger 6 and the outdoor air passing through the bypass air passage. That is, the ventilation device 100 in the normal ventilation mode can ventilate the room without exchanging heat between the room air and the outdoor air.

  Next, the signal flow of the ventilation device 100 will be described. FIG. 3 is a block diagram of the ventilation device according to the first embodiment. The ventilation device 100 further includes an outdoor temperature sensor 10, an outdoor humidity sensor 11, an indoor temperature sensor 12, an indoor humidity sensor 13, a remote controller 14, and an operation control device 15.

As shown in FIGS. 1 and 2, the outdoor temperature sensor 10 and the outdoor humidity sensor 11 are provided between the supply air inlet 5 and the total heat exchanger 6 in the supply air path. The outdoor temperature sensor 10 and the outdoor humidity sensor 11 measure the outdoor temperature T _oa and the outdoor relative humidity RH _oa from the outdoor air sucked from the air supply inlet 5. The indoor temperature sensor 12 and the indoor humidity sensor 13 are provided between the exhaust air inlet 2 and the air path switching damper 9 in the exhaust air path. The room temperature sensor 12 and the room humidity sensor 13 measure the room temperature T _ra and the room relative humidity RH _ra from the room air sucked from the exhaust air inlet 2.

  The remote controller 14 is an input terminal that allows an operator to perform input operations such as ON / OFF of the ventilation device 100 and manual switching of the ventilation mode.

The operation control device 15 is communicably connected so as to receive signals from the outdoor temperature sensor 10, the outdoor humidity sensor 11, the indoor temperature sensor 12, the indoor humidity sensor 13, and the remote controller 14. Signals sent from the outdoor temperature sensor 10, the outdoor humidity sensor 11, the indoor temperature sensor 12, and the indoor humidity sensor 13 to the operation control device 15 include the outdoor temperature T _oa , the outdoor relative humidity RH _oa , the indoor temperature measured by the sensors. Information about T _ra and room relative humidity RH _ra is included. Further, the signal sent from the remote controller 14 to the operation control device 15 includes information related to the input operation of the operator such as ON / OFF of the ventilation device 100, for example.

The operation control device 15 includes a storage unit 15a, a calculation unit 15b, and a control unit 15c. Storage unit 15a stores the indoor target temperature _{T m,} the indoor target relative humidity RH _m, the value of the indoor target absolute humidity _{X m} and indoor target enthalpy _{I m} in advance.

Based on the outdoor temperature T _oa , the outdoor relative humidity RH _oa , the indoor temperature T _ra, and the indoor relative humidity RH _ra included in the received signal, the calculation unit 15 b determines the outdoor absolute humidity X _oa , the outdoor enthalpy I _oa , and the indoor absolute humidity X _Ra and room enthalpy I _ra are calculated. The indoor target temperature T _m , the indoor target relative humidity RH _m , the indoor target absolute humidity X _m and the indoor target enthalpy I _m stored in the storage unit 15a are, for example, the indoor target temperature T _m and the indoor target relative humidity RH _m. There was to be entered from the remote controller 14, the indoor target temperature T _m which is input to the remote controller _14, based on the indoor target relative humidity RH _m, indoor target absolute calculated humidity X _m and indoor target enthalpy I _m in the calculating portion 15b May be.

  Based on the information included in the received signal, the information stored in the storage unit 15a, and the information calculated by the calculation unit 15b, the control unit 15c determines the rotation speed and the wind of the air supply fan 7 and the exhaust fan 8 A control signal for controlling the position of the path switching damper 9 is generated. Further, the operation control device 15 is communicably connected so that signals can be transmitted to the air supply fan 7, the exhaust air fan 8, and the air path switching damper 9, and the control signal generated by the control unit 15c is transmitted to each device. Can be sent to.

  Next, automatic switching control of the ventilation mode of the ventilation device 100 will be described. FIG. 4 is a flowchart of the ventilation mode automatic switching control according to the first embodiment. At the start of the flowchart in FIG. 4, the air supply blower 7 and the exhaust air blower 8 are already driven, outdoor air is sucked from the air supply suction port 5, and indoor air is sucked from the exhaust suction port 2. Suppose that

First, in step S1, the operation control device 15 includes an outdoor temperature T _oa , an outdoor relative humidity RH _oa , an indoor temperature T _ra and an outdoor temperature sensor 10, an outdoor humidity sensor 11, an indoor temperature sensor 12, and an indoor humidity sensor 13. Information on indoor relative humidity RH _ra is acquired. After obtaining the information, the process proceeds to step S2.

In step S2, the calculation unit 15b calculates the outdoor enthalpy I _oa and the indoor enthalpy I _ra based on the information on the outdoor relative humidity RH _oa , the indoor temperature T _ra, and the indoor relative humidity RH _ra acquired by the operation control device 15. After the calculation, the process proceeds to step S3.

In step S3, the control unit 15c compares the outdoor enthalpy I _oa and the indoor enthalpy I _ra and determines whether the outdoor enthalpy I _oa is lower, that is, satisfies the condition of I _oa <I _ra . If the condition is satisfied, the process proceeds to step S4. If the condition is not satisfied, the process proceeds to step S5.

In step S4, the control unit 15c compares the indoor enthalpy _{I ra} and indoor target enthalpy _{I m,} or towards the chamber enthalpy _{I ra} is high, i.e. determines satisfies one of _I ra> _{I m.} If the condition is satisfied, the process proceeds to step S6. If the condition is not satisfied, the process proceeds to step S7.

In step S5, the control unit 15c compares the outdoor enthalpy I _oa with the indoor target enthalpy I _m and determines whether the outdoor enthalpy I _oa is lower, that is, satisfies the condition of I _oa <I _m . If the condition is satisfied, the process proceeds to step S6. If the condition is not satisfied, the process proceeds to step S7.

  In step S6, the control unit 15c controls the air path switching damper 9 to a position where the heat exchanger exhaust air path of the total heat exchanger 6 is blocked and the bypass air path is opened as shown in FIG. Control is performed so that 100 operates in the normal ventilation mode. After performing the control, the process returns to step S1.

For example, if the condition of I _oa <I _ra is satisfied in step S3 and the condition of I _ra > I _m is satisfied in step S4, that is, if I _m <I _oa <I _ra or I _oa <I _m <I _ra In step S6, the ventilator 100 operates in the normal ventilation mode. Since ventilator 100 in this state to introduce a low enthalpy outdoor air than the room air without heat exchanger, the indoor enthalpy I _ra decreases and approaches the indoor target enthalpy I _m.

If the condition of I _oa <I _ra is not satisfied in step S3 and the condition of I _oa <I _m is satisfied in step S5, that is, if I _ra ≦ I _oa <I _m , the process proceeds to step S6 and the ventilation device 100 Operate in normal ventilation mode. Since ventilator 100 in this state introduces enthalpy higher outdoor air than the room air without heat exchanger, the indoor enthalpy I _ra rises, approaches the indoor target enthalpy I _m.

  In step S7, the control unit 15c controls the air path switching damper 9 to a position where the heat exchanger exhaust air path of the total heat exchanger 6 is opened and the bypass air path is blocked as shown in FIG. Control is performed so that 100 operates in the heat exchange ventilation mode. After performing the control, the process returns to step S1.

For example, if the condition of I _oa <I _ra is satisfied in step S3 and the condition of I _ra > I _m is not satisfied in step S4, that is, if I _oa <I _ra ≦ I _m , the process proceeds to step S7 and the ventilator 100 is Operate in heat exchange ventilation mode. Since the ventilator 100 in this state introduces outdoor air having a lower enthalpy than room air after exchanging heat with the room air, a decrease in the room enthalpy _Ira is suppressed.

Further, when the condition of I _oa <I _ra is not satisfied in step S3 and the condition of I _oa <I _m is not satisfied in step S5, that is, I _m ≦ I _ra ≦ I _oa or I _ra ≦ I _m ≦ I _oa In that case, the process proceeds to step S7 and the ventilator 100 operates in the heat exchange ventilation mode. Since the ventilator 100 in this state introduces outdoor air having a higher enthalpy than room air after exchanging heat with the room air, an increase in the room enthalpy _Ira is suppressed.

In order to return to step S1 again after the control of step S6 and step S7, for example, when I _oa <I _m <I _ra , outside air is introduced in the normal ventilation mode, the indoor enthalpy I _ra decreases, and I _oa <I _ra ≦ I _In order to switch to the heat exchange ventilation mode even if it becomes the state of _m , it is controlled to approach the indoor target enthalpy Im.

Furthermore, since the switching of the ventilation mode is performed by comparing the enthalpies, the outdoor temperature T _oa is lower than the indoor temperature T _ra but the outdoor relative humidity RH _oa is higher than the indoor relative humidity RH _ra in the normal ventilation mode. It is possible to avoid such a situation that the indoor environment becomes highly humid and the comfort is lowered.

To perform the indoor enthalpy I _ra, and outdoor enthalpy I _oa, based on indoor target enthalpy I _m, the automatic switching control of the ventilation mode as in the flowchart of ventilator 4 in the first embodiment as described above, It is possible to obtain a ventilation device that can perform ventilation operation with high comfort and energy saving.

  In the ventilator 100 according to the first embodiment, the supply air passage that connects the supply air outlet 3 and the intake air inlet 5 via the heat exchanger supply air passage of the total heat exchanger 6, and the total heat exchange Although the exhaust air inlet 2 and the exhaust air passage which makes the exhaust air outlet 4 communicate with each other via the heat exchanger exhaust air passage or the bypass air passage of the heat exchanger 6 are formed, it is not limited to this. For example, the supply air passage may be formed so that the supply air outlet 3 and the supply air inlet 5 communicate with each other via the heat exchanger supply air passage or the bypass air passage of the total heat exchanger 6. In this case, the air path switching damper 9 is provided at the junction point on the upstream side of the heat exchanger air supply path and the bypass air path of the total heat exchanger 6 in the air supply path. The ventilation device 100 in this case operates in the heat exchange ventilation mode by setting the air path switching damper 9 to a position where the heat exchanger air supply air path of the total heat exchanger 6 is opened and the bypass air path is blocked. The air path switching damper 9 can be operated in the normal ventilation mode by closing the heat exchanger supply air path of the total heat exchanger 6 and opening the bypass air path.

Modification of Embodiment 1 A modification in which the ventilation device 100 of Embodiment 1 and a general air conditioner are combined will be described. FIG. 5 is a schematic diagram in which the ventilation device and the air conditioner according to Embodiment 1 are combined. The building 200 has at least one living room 201 and includes a ventilator 100 that ventilates the air in the living room 201 and an air conditioner 300 that performs air conditioning.

  Since the configuration of the ventilation device 100, the signal flow, and the automatic switching control of the ventilation mode are the same as those in the first embodiment, they are omitted. A room-side exhaust duct 101 is connected to the exhaust suction port 2 and communicates with the room 201 via the room-side exhaust duct 101. The indoor air supply duct 102 is connected to the air supply outlet 3 and communicates with the living room 201 through the indoor air supply duct 102. An outdoor exhaust duct 103 is connected to the exhaust outlet 4 and communicates with the outdoors via the outdoor exhaust duct 103. An outdoor air supply duct 104 is connected to the air supply inlet 5 and communicates with the outdoors via the outdoor air supply duct 104. That is, the ventilator 100 can exhaust the air in the living room 201 to the outside via the indoor exhaust duct 101 and the outdoor exhaust duct 103, and via the indoor air supply duct 102 and the outdoor air supply duct 104. Outdoor air can be supplied to the room 201.

  The air conditioner 300 includes an indoor unit 301, an outdoor unit 302, and an air conditioner remote control 303. The indoor unit 301 is provided in the building 200, and the outdoor unit 302 is provided outdoors. The air conditioner remote controller 303 is an input terminal that allows an operator to perform input operations such as ON / OFF of the air conditioner 300 and switching between a cooling operation mode and a heating operation mode.

  FIG. 6 is a schematic diagram illustrating an example of a cooling mode of a general air conditioner. FIG. 7 is a schematic diagram illustrating an example of a heating mode of a general air conditioner. An air path (not shown) having both ends connected to the interior of the room 201 is formed inside the indoor unit 301, and the indoor unit temperature sensor 301a, the indoor unit fan 301b, and the indoor unit heat exchanger 301c are located in the air path. is set up. Note that the indoor unit temperature sensor 301a needs to be provided upstream of the indoor unit heat exchanger 301c in the air path inside the indoor unit 301. When the indoor unit fan 301b is driven, the air in the living room 201 is sucked into the air path of the indoor unit 301. The inhaled air in the room 201 is measured for temperature using the indoor unit temperature sensor 301a, and is exchanged in the indoor unit heat exchanger 301c, and then blown into the room 201. Moreover, the refrigerant | coolant for heat-exchange with the air in the room 201 flows into the indoor unit heat exchanger 301c, and a pair of refrigerant | coolant circulation port for a refrigerant | coolant to flow in or out is provided.

  An air path (not shown) having both ends connected to the outdoors is formed inside the outdoor unit 302, and an outdoor unit temperature sensor 302a, an outdoor unit fan 302b, and an outdoor air heat exchanger 302c are installed in the air path. ing. In the air path inside the outdoor unit 302, the outdoor unit temperature sensor 302a needs to be provided on the upstream side of the outdoor unit heat exchanger 302c. When the outdoor unit fan 302 b is driven, outdoor air is sucked into the air path of the outdoor unit 302. The sucked outdoor air is measured for temperature by using the outdoor unit temperature sensor 302a, and after being heat-exchanged by the outdoor unit heat exchanger 302c, it is blown out outdoors. In addition, a refrigerant for exchanging heat with outdoor air flows in the outdoor unit heat exchanger 302c, and a pair of refrigerant circulation ports for allowing the refrigerant to flow in or out are provided. Further, inside the outdoor unit 302, a compressor 302d that sucks the refrigerant and compresses and discharges the sucked refrigerant, an expansion valve 302e that decompresses and flows out the refrigerant that flows in and flows out, and discharges from the compressor 302d. And a four-way valve 302f for switching the flow of the refrigerant.

  In the air conditioner 300, a refrigerant circulation circuit is formed in which refrigerant enclosed by the indoor unit heat exchanger 301c, the outdoor unit heat exchanger 302c, the compressor 302d, the expansion valve 302e, and the four-way valve 302f circulates. The four-way valve 302f has four ports a, b, c, and d. The port a is a refrigerant suction port of the compressor 302d, the port b is one refrigerant circulation port of the outdoor heat exchanger 302c, and the port c. Is connected to the discharge port of the compressor 302d, and the port d is connected to one refrigerant circulation port of the indoor heat exchanger 301c. The other refrigerant circulation port of the outdoor unit heat exchanger 302c is connected to the other refrigerant circulation port of the indoor unit heat exchanger 301c via the expansion valve 302e.

  The air conditioner 300 can switch between a cooling operation mode in which the air in the room 201 is cooled and a heating operation mode in which the air in the room 201 is heated by switching the flow path of the refrigerant using the four-way valve 302f.

  In the cooling operation mode, the four-way valve 302f connects the port a and the port d and connects the port b and the port c as shown in FIG. In the cooling operation mode, the high-temperature and high-pressure refrigerant discharged from the compressor 302d flows to the outdoor unit heat exchanger 302c via the four-way valve 302f. The high-temperature and high-pressure refrigerant exchanges heat with outdoor air flowing in the air path inside the outdoor unit 302 by the outdoor unit heat exchanger 302c, and enters a low-temperature and high-pressure supercooled state. The low-temperature and high-pressure refrigerant flows into the expansion valve 302e from the outdoor unit heat exchanger 302c, and is decompressed by the expansion valve 302e to become a low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant flows into the indoor unit heat exchanger 301c from the expansion valve 302e, exchanges heat with the air in the room 201 flowing in the air path inside the indoor unit 301, and enters a high-temperature and low-pressure overheat state. Then, the high-temperature and low-pressure refrigerant is sucked into the compressor 302d through the four-way valve 302f. Since the refrigerant circulates in this way in the cooling operation mode, the air in the living room 201 is cooled by the low-temperature and low-pressure refrigerant flowing in the indoor unit heat exchanger 301c.

  In the cooling operation mode, when the air in the room 201 is high-temperature and high-humidity air, when the high-temperature and high-humidity air exchanges heat with the indoor unit heat exchanger 301c, the air becomes a low temperature. A part of the water vapor is condensed on the indoor unit heat exchanger 301c. Therefore, the water vapor that is condensed is removed from the air in the room 201, and the absolute humidity of the air in the room 201 is also reduced in the cooling operation mode.

  In the heating operation mode, the four-way valve 302f connects the port a and the port b and connects the port c and the port d as shown in FIG. In the heating operation mode, the high-temperature and high-pressure refrigerant discharged from the compressor 302d flows to the indoor unit heat exchanger 301c via the four-way valve 302f. The high-temperature and high-pressure refrigerant exchanges heat with the air in the room 201 flowing in the air path inside the indoor unit 301 by the indoor unit heat exchanger 301c, and enters a low-temperature and high-pressure supercooled state. The low-temperature and high-pressure refrigerant flows from the indoor unit heat exchanger 301c into the expansion valve 302e, and is decompressed by the expansion valve 302e to become a low-temperature and low-pressure refrigerant. The low-temperature and low-pressure refrigerant flows into the outdoor unit heat exchanger 302c from the expansion valve 302e, exchanges heat with outdoor air flowing in the air passage inside the outdoor unit 302, and enters a high-temperature and low-pressure overheat state. The high-temperature and low-pressure refrigerant is sucked into the compressor 302d through the four-way valve 302f. Since the refrigerant circulates in this manner in the heating operation mode, the air in the living room 201 is heated by the high-temperature and high-pressure refrigerant flowing in the indoor unit heat exchanger 301c.

  The air conditioning capability in the cooling operation mode and the heating operation mode depends on the rotation speed of the compressor 302d and the rotation speed of the outdoor unit fan 302b. The higher the rotation speed of the compressor 302d and the rotation speed of the outdoor unit fan 302b, the higher the air conditioning capability, but the higher the power consumption. Further, when the operation of the compressor 302d is stopped, the refrigerant does not circulate, so that the air in the room 201 flowing into the air path inside the indoor unit 301 is not cooled or heated by the indoor unit heat exchanger 301c. At this time, when the indoor unit fan 301b is rotated, it becomes a blowing operation mode in which the air in the living room 201 is sucked and blown out without exchanging the temperature.

  FIG. 8 is a block diagram showing a signal flow of a general air conditioner. The indoor unit 301 has an indoor unit control device 301d. The indoor unit control device 301d is communicably connected to the indoor unit temperature sensor 301a, the indoor unit fan 301b, and the air conditioner remote controller 303, and the temperature or air of the indoor 301 measured by the indoor unit temperature sensor 301a. Based on the input of the harmony device remote control 303, the rotational speed of the indoor unit fan 301b is controlled.

  The outdoor unit 302 has an outdoor unit control device 302g. The outdoor unit control device 302g is communicably connected to an outdoor unit temperature sensor 302a, an outdoor unit fan 302b, a compressor 302d, an expansion valve 302e, and a four-way valve 302f. Further, based on the outdoor temperature measured by the outdoor unit temperature sensor 302a, the rotational speed of the outdoor unit fan 302b, the rotational speed of the compressor 302d, the opening degree of the expansion valve 302e, and the switching of the four-way valve 302f are controlled.

  Moreover, the indoor unit control device 301d and the outdoor unit control device 302g are connected so as to communicate with each other. Therefore, when the air conditioner remote control 303 is input to switch to the heating operation mode, the indoor unit control device 301d transmits the signal to the outdoor unit control device 302g, and the outdoor unit control device 302g that receives the signal receives the signal from the four-way valve. The indoor unit 301 and the outdoor unit 302 can be interlocked, such as switching control of 302f.

Further, the indoor unit control device 301d stores a target temperature in the room 201 determined by the operator by an operation input from the air conditioner remote control 303. The indoor unit control device 301d performs control so that the temperature in the living room 201 approaches the stored target temperature. For example, if the temperature of the room 201 measured by the indoor unit temperature sensor 301a in the cooling operation mode is higher than the target value, the indoor unit fan 301b, the outdoor unit fan 302b, and the compressor 302d are rotated to heat the indoor unit. The air in the room 201 is cooled by the exchanger 301c. Further, if the temperature of the room 201 measured by the indoor unit temperature sensor 301a in the cooling operation mode is lower than the target value, the indoor unit fan 301b, the outdoor unit fan 302b, and the compressor 302d are stopped and the indoor unit heat is stopped. The cooling of the air in the room 201 by the exchanger 301c is stopped. In this case, the temperature in the room 201 determined for the operator, to may be the same value as the indoor target temperature T _m which is stored in the storage unit 15a of the ventilation device 100, may be different.

The indoor unit 301 is provided with an indoor unit humidity sensor that measures the humidity of the air in the room 201, and the indoor unit controller 301d measures the temperature of the room 201 measured by the indoor unit temperature sensor 301a and the indoor unit humidity sensor. Control may be performed so that the enthalpy of the room 201 is calculated based on the indoor humidity, and the target value stored in the indoor unit control device 301d is enthalpy so that the enthalpy of the room 201 approaches the target value. Target value of the enthalpy of the case, to may be the same value as the indoor target enthalpy I _m stored in the storage unit 15a of the ventilation device 100, may be different.

  Furthermore, the air conditioner 300 has only one of the indoor unit control device 301d and the outdoor unit control device 302g, and the air conditioner 300 has a device that is communicably connected to the other. It is also possible to connect to the other side so that communication is possible. For example, only the indoor unit control device 301d is provided, and the indoor unit control device 301d can communicate with the outdoor unit temperature sensor 302a, the outdoor unit fan 302b, the compressor 302d, the expansion valve 302e, and the four-way valve 302f. You may connect to.

  In addition, the structure of the air conditioning apparatus 300 is an example, and if it is the air conditioner 300 which can perform the air conditioning of the living room 201, it will not restrict to this structure.

Next, the effect by combining the ventilation apparatus 100 of Embodiment 1 and the general air conditioning apparatus 300 is demonstrated. Here, for convenience of explanation, the indoor temperature _Tra and the temperature value measured by the indoor unit temperature sensor 301a of the air conditioner 300 are the same, and the outdoor temperature _Toa of the ventilator 100 and the outdoor temperature of the air conditioner 300 are the same. the value of the temperature measured by the machine temperature sensors 302a is the same, the target value indoor unit control device 301d has stored the indoor target temperature T _m and the air conditioner 300 of the ventilator 100 to be the same.

When I _m <I _oa <I _ra , I _oa <I _m <I _ra or I _ra ≦ I _oa <I _m , the ventilator 100 operates in the normal ventilation mode, and the indoor enthalpy I _ra is the indoor target enthalpy I. Approaching _m . The indoor target enthalpy I _m, since it is determined in association with the indoor target temperature T _m, the more room enthalpy I _ra approaches the indoor target enthalpy I _m, the indoor temperature T _ra has stored the indoor control unit 301d It approaches the target value. Therefore, the air conditioning load of the air conditioner 300 is reduced, and the energy saving performance is enhanced.

The ventilator 100 operates in the heat exchange ventilation mode in the state of I _ra ≦ I _m ≦ I _oa . Such a state may occur when the air conditioner 300 excessively cools the living room 201 in the summer or intermediate period. Thus, in the case where I _ra ≦ I _m ≦ I _oa due to excessive cooling, the difference between the indoor enthalpy I _ra and the indoor target enthalpy I _{m is} the difference between the outdoor enthalpy I _oa and the indoor target enthalpy I _m . Smaller than that. Therefore, even if the operation is performed in the normal ventilation mode so that the indoor enthalpy I _ra approaches the indoor target enthalpy I _m , the state immediately becomes I _m ≦ I _ra ≦ I _oa . In the state of I _m ≦ I _ra ≦ I _oa must switch to the heat exchange ventilation mode so as not to leave from the indoor target enthalpy I _m indoor enthalpy I _ra rises, use would frequently switch the ventilation mode occurs The comfort of the person will be impaired. In addition, the energy that is excessively cooled for normal ventilation is wasted, resulting in an increase in the air conditioning load.

However, since the ventilation device 100 operates in the heat exchange ventilation mode when I _ra ≦ I _m ≦ I _oa , switching of the ventilation mode does not occur frequently, and the user's comfort is not impaired. Further, the energy that is excessively cooled by the air conditioner 300 is not wasted, and higher energy saving performance can be achieved. Therefore, the ventilator 100 of Embodiment 1 can exhibit high comfort and energy saving, especially in the summer or intermediate period.

Embodiment 2
The structure of the ventilation air conditioning system of Embodiment 2 is demonstrated. FIG. 9 is a schematic diagram showing a ventilation air conditioning system according to the second embodiment. FIG. 10 is a block diagram of the ventilation air-conditioning system according to Embodiment 2. The ventilation air conditioning system according to the second embodiment includes a ventilation device 100 and an air conditioner 300, and the operation control device 15 of the ventilation device 100 and the indoor unit control device 301d of the air conditioner 300 are connected to be communicable. Yes. In addition, the control unit 15 c of the operation control device 15 can send a signal to the indoor unit control device 301 d of the air conditioner 300 to change the operation of the air conditioner 300. The configuration other than these and the signal flow are the same as in the modification of the first embodiment, and thus the description thereof is omitted.

The storage unit 15a of the ventilation device 100 stores the control reference enthalpy I _m2 determined based on the indoor target enthalpy I _m . The control reference enthalpy I _m2, only a constant value determined in advance from the indoor target enthalpy I _m are lower values, arithmetic unit 15b is calculated based on the indoor target enthalpy I _m, is stored in the storage unit 15a. The predetermined constant value may be 0, that is, the relationship between the control reference enthalpy I _m2 and the indoor target enthalpy I _m is I _m ≧ I _m2 .

  FIG. 11 is a flowchart of the ventilator / air conditioner interlock control of the ventilation air conditioning system according to the second embodiment. Note that the control from step S1 to step S6 or step S7 of the ventilator / air conditioning apparatus interlocking control is the same as the ventilation mode automatic switching control of the first embodiment, and thus description thereof is omitted.

  In step S6, after changing the ventilation mode of the ventilator 100 to the normal ventilation mode, the process proceeds to step S8. Moreover, after changing the ventilation mode of the ventilation apparatus 100 at step S7, it progresses to step S10.

In step S8, similarly to step S5, the control unit 15c compares the outdoor enthalpy I _oa and the control reference enthalpy I _m2, and determines whether the control reference enthalpy I _m2 is higher, that is, whether the condition of I _oa <I _m2 is satisfied. judge. If the condition is satisfied, the process proceeds to step S9. If the condition is not satisfied, the process proceeds to step S10.

  In step S9, the control unit 15c sends an air conditioning suppression signal for operating the air conditioning apparatus 300 to lower the air conditioning capacity to the indoor unit control apparatus 301d of the air conditioning apparatus 300. Receiving the air conditioning suppression signal, the indoor unit control device 301d controls the compressor 302d or the outdoor unit fan 302b via the outdoor unit control device 302g to lower the air conditioning capability. Specifically, there are a method of reducing the rotational speed of the compressor 302d and a method of reducing the rotational speed of the outdoor unit fan 302b. In step S9, the air conditioning capability of the air conditioner 300 can be lowered stepwise. For example, the air conditioner 300 is preset with three levels of output, ie, strong, medium, weak, in order of increasing air conditioning capability. When the indoor unit control device 301d receives an air conditioning suppression signal from the control unit 15c, Control is performed so that the compressor 302d is stopped and the blower operation mode is entered when the vehicle is operating at low, when the vehicle is operating at low, and when the vehicle is operating at low. In addition, even when stopping the air conditioning apparatus 300 in step S9, since the air conditioning capability of the air conditioning apparatus 300 is lowered from the air conditioning ON state to the air conditioning OFF state, it corresponds to the present invention. After the control in step S9 is completed, the process returns to step S1 again.

  In step S10, the control unit 15c sends an air conditioning recovery signal for operating the air conditioner 300 so as to return the air conditioning capability lowered in step S9 to the indoor unit control device 301d. Receiving the air conditioning recovery signal, the indoor unit control device 301d controls the compressor 302d or the outdoor unit fan 302b via the outdoor unit control unit 302g to return the air conditioning capability. In addition, when the air-conditioning capacity is lowered a plurality of times via step S9, the air-conditioning capacity before passing the first step S9 is restored. For example, three levels of output are set in advance in descending order of air-conditioning capacity, and the output is weak because it is driven strong before passing through step S9 and passed through step S9 twice. In this case, the output returns to strong when passing through step S10. After the control of step S10 is completed, the process returns to step S1 again.

If the condition is satisfied the ventilation mode of the ventilation device 100 is typically ventilation mode _I oa _{<I m2,} for indoor enthalpy _{I ra} by introducing outside air approaches the indoor target enthalpy _{I m,} air conditioning capability of the air conditioner 300 The power consumption may be reduced by lowering the value, which improves energy saving. In particular, in the case of I _oa <I _m <I _ra , since the indoor enthalpy I _ra reaches the indoor target enthalpy I _m simply by setting the ventilation mode of the ventilator 100 to the normal ventilation mode and introducing outside air, the air conditioner 300 may be stopped, and energy saving performance is greatly improved.

When the condition of I _oa <I _m2 is satisfied in step S8, the difference between the outdoor enthalpy I _oa and the indoor target enthalpy I _m is at least the difference between the indoor target enthalpy I _m and the control reference enthalpy I _m2. . Therefore, if even a difference of the outdoor enthalpy I _oa and indoor target enthalpy I _m is introduced little outside air indoor enthalpy I _ra hardly reach the indoor target enthalpy I _m, for performing cooling by the air conditioner 300, quickly can indoor enthalpy I _ra reaches the indoor target enthalpy I _m, to achieve a high comfort.

An indoor enthalpy I _ra as the flowchart of ventilation air conditioning system 11 of the second embodiment as described above, the outdoor enthalpy I _oa, based on indoor target enthalpy I _m, switch the ventilation mode automatically, further air Since the ventilation device / air conditioning device interlocking control that automatically reduces the air conditioning capability of the harmony device is performed, a ventilation device capable of performing a ventilation operation with higher comfort and energy saving than the first embodiment can be obtained.

  In addition, although the operation control apparatus 15 of the ventilation apparatus 100 and the indoor unit control apparatus 301d of the air conditioning apparatus 300 are connected to the ventilation air conditioning system of Embodiment 2, it is not restricted to this, The operation control apparatus 15 and the outdoor unit The control device 302g may be connected.

  Moreover, the ventilation air-conditioning system of Embodiment 2 can change the operation | movement of the air conditioning apparatus 300 because the control part 15c of the ventilation apparatus 100 sends a signal to the indoor unit control apparatus 301d of the air conditioning apparatus 300. However, it is not limited to this. For example, the storage unit 15a, the calculation unit 15b, and the control unit 15c of the operation control device 15 of the ventilation device 100 are mounted on the indoor unit control device 301d of the air conditioner 300, and the indoor unit control device 301d performs the ventilation mode of the ventilation device 100. The operation control device 15 that receives the signal may control the air path switching damper 9.

Furthermore, in the ventilation air conditioning system of the second embodiment, as shown in FIG. 10, the ventilation device 100 has the indoor temperature sensor 12 and the air conditioner 300 has the indoor unit temperature sensor 301 a, but this is not limitative. However, only one of the indoor temperature sensor 12 and the indoor unit temperature sensor 301a may be used. For example, when only the indoor unit temperature sensor 301a is provided, the operation control device 15 can acquire the measured value of the indoor unit temperature sensor 301a via the indoor unit control device 301d and set the measured value as the indoor temperature _Tra. . Similarly, only one of the outdoor temperature sensor 10 of the ventilation device 100 and the outdoor unit temperature sensor 302a of the air conditioner 300 may be used. Furthermore, when the air conditioning apparatus 300 includes an indoor unit humidity sensor, only one of the indoor humidity sensors 13 may be similarly used. When the air conditioner 300 includes an outdoor unit humidity sensor, only one of the outdoor humidity sensors 11 may be similarly used.

Further, in the ventilation air conditioning system of the second embodiment, the control reference enthalpy I _m2 is not stored in the storage unit 15a, and the calculation unit 15b calculates the control reference enthalpy I _m2 from the indoor target enthalpy I _m every time in step S2. May be.

Furthermore, the HVAC system of the second embodiment, the indoor target temperature T _m which is stored in the storage unit 15a of the ventilator 100, the target of the living room 201 stored in the indoor unit control device 301d of the air conditioner 300 One of the temperatures may be determined based on the other value. For example, the indoor target temperature _Tm is set to be the same value as the target temperature of the living room 201. At the same time when the target temperature of the living room 201 is changed by the air conditioner remote controller 303, the indoor target temperature _Tm is also changed. computed indoor target enthalpy I _m also may be changed in conjunction with 15b.

Embodiment 3
FIG. 12 is a flowchart of the ventilator / air conditioner interlock control of the ventilation air-conditioning system according to Embodiment 3. Between the step S9 and the case where it is determined that the ventilator / air conditioner interlocking control according to the third embodiment satisfies the condition in step S8 of the ventilator / air conditioner interlocking control of the second embodiment. Step S11 is inserted. In addition, about the process of the other flowchart, the structure of a ventilation air-conditioning system, and the flow of a signal, since it is the same as Embodiment 2, description is omitted.

In step S8, it is determined whether the condition of I _oa <I _m2 is satisfied. If the condition is satisfied, the process proceeds to step S11. In step S11, the control unit 15c compares the room temperature _{T ra} and the indoor target temperature _{T m,} or towards the indoor target temperature _{T m} is high, i.e. determines satisfies one of _T ra _{<T m.} If the condition is satisfied, the process proceeds to step S9. If the condition is not satisfied, the process proceeds to step S10.

In step S11, it is necessary to satisfy the condition of T _ra <T _{m in order} to proceed to step S9. Therefore, if the indoor temperature T _ra is higher than the indoor target temperature T _m it is without reducing the air-conditioning capacity of the air conditioner 300 as soon as possible can reduce the indoor temperature T _ra to the indoor target temperature T _m, the embodiment The comfort is improved compared to 2 ventilation air conditioning systems.

In step S11, it is determined whether or not the condition of T _ra <T _m is satisfied. However, this is a case where the room temperature is prioritized and is not limited thereto. For example, if the priority is given to the indoor humidity, compares the indoor absolute humidity X _ra and indoor target absolute humidity X _m, or not higher indoor target absolute humidity X _m, if satisfying one of the words X _{ra <X m} If the condition is satisfied, the process proceeds to step S10. If the condition is not satisfied, the process proceeds to step S9. In this case, when the indoor absolute humidity X _ra is higher than the indoor target absolute humidity X _m, because the air conditioner 300 does not drop the air-conditioning capacity, quickly lowering the indoor absolute humidity X _ra in indoor target absolute humidity X _m Therefore, the comfort is improved as compared with the ventilation air conditioning system of the second embodiment.

Embodiment 4
The structure of the ventilation air conditioning system of Embodiment 4 is demonstrated. FIG. 13 is a schematic diagram illustrating a ventilation air conditioning system according to Embodiment 4. FIG. 14 is a block diagram of a ventilation air conditioning system according to Embodiment 4. The ventilation air conditioning system of the fourth embodiment includes a ventilation device 100, an air conditioning device 300, and an external controller 400. The operation control device 15 of the ventilation device 100 and the indoor unit control device 301d of the air conditioning device 300 are communicably connected to the external controller 400. The configuration other than these and the signal flow are the same as in the modification of the first embodiment, and thus the description thereof is omitted. Further, since the ventilation device / air conditioning device interlocking control of the ventilation air conditioning system according to Embodiment 4 is the same as the ventilation device / air conditioning device interlocking control of Embodiment 2 or Embodiment 3, description thereof is omitted. .

  The external controller 400 is communicably connected to at least the ventilation device 100 and the air conditioning device 300. Therefore, the external controller 400 may be communicably connected to other devices, for example, other home appliances such as a refrigerator or a heat pump water heater, and various sensors such as a sensor that measures the outside air temperature.

The external controller 400 includes an external controller storage unit 400a, an external controller calculation unit 400b, and an external controller control unit 400c. The external controller storage unit 400a stores in advance at least the values of the indoor target temperature T _m , the indoor target relative humidity RH _m , the indoor target absolute humidity X _m, and the indoor target enthalpy I _m , as in the storage unit 15a of the ventilation device 100. . The external controller calculation unit 400b, like the calculation unit 15b of the at least ventilator 100 outdoor temperature _{T oa,} outdoor relative humidity _{RH oa,} based on the indoor temperature _{T ra} and the indoor relative humidity _{RH ra,} outdoor absolute humidity _{X oa,} outdoor The enthalpy I _oa , the indoor absolute humidity X _ra and the indoor enthalpy I _ra are calculated. Furthermore, the external controller control unit 400c is similar to at least the control unit 15c of the ventilation device 100 of the second or third embodiment, and includes information included in the received signal, information stored in the external controller storage unit 400a, and external Based on the information calculated by the controller calculation unit 15b, the ventilator 100 and the air conditioner 300 can be controlled based on the ventilator / air conditioner interlock control of the second or third embodiment.

When performing the ventilation device / air conditioning device interlocking control, the external controller 400 uses the outdoor temperature T _oa , the outdoor relative humidity RH _oa , the indoor temperature T _ra, and the indoor relative humidity RH _ra to the outdoor temperature sensor 10 of the ventilation device 100. It may be acquired from the outdoor humidity sensor 11, the indoor temperature sensor 12, and the indoor humidity sensor 13, or may be acquired from the indoor unit temperature sensor 301a and the outdoor unit temperature sensor 302a of the air conditioner 300. Further, if the external controller 400 is connected to another device, for example, a temperature sensor connected to an outdoor unit of a heat pump type water heater, a sensor that measures an outdoor temperature directly connected to the external controller 400, or the like. You may acquire from the apparatus connected so that communication with the external controller 400 is possible.

  Thus, by providing the external controller 400, for example, even if the ventilator 100 is a general ventilator that can only switch between the heat exchange ventilation mode and the normal ventilation mode, the external controller control unit 400c of the external controller 400 Thus, the ventilation device / air conditioning device interlocking control as in the second or third embodiment can be performed.

  In the fourth embodiment, the case where the external controller 400 performs the ventilation device / air conditioning device interlocking control of the second or third embodiment has been described. However, the present invention is not limited to this, and the automatic switching control of the ventilation mode of the first embodiment May be performed. In this case, the air conditioner 300 may not be communicably connected.

DESCRIPTION OF SYMBOLS 1 Main body casing, 2 Exhaust air inlet, 3 Supply air outlet, 4 Exhaust air outlet, 5 Supply air inlet, 6 Total heat exchanger, 7 Supply air blower, 8 Exhaust air blower, 9 Air path switching damper, 10 Outdoor temperature sensor, 11 Outdoor humidity sensor, 12 Indoor temperature sensor, 13 Indoor humidity sensor, 14 Remote control, 15 Operation control device, 15a Storage unit, 15b Calculation unit, 15c Control unit, 100 Ventilation device, 101 Indoor exhaust duct, 102 Indoor air supply duct, 103 outdoor exhaust duct, 104 indoor air supply duct, 200 building, 201 living room, 300 air conditioner, 301 indoor unit, 301a indoor unit temperature sensor, 301b indoor unit fan, 301c indoor unit heat Exchanger, 301d indoor unit control device, 302 outdoor unit, 302a outdoor unit temperature sensor, 30 b outdoor unit fan, 302c outdoor unit heat exchanger, 302d compressor, 302e expansion valve, 302f four-way valve, 302g outdoor unit controller, 303 air conditioner remote controller, 400 external controller, 400a external controller storage unit, 400b external controller calculation Part, 400c External controller control part

Claims (10)

An air passage for exhausting indoor air to the outside and supplying outdoor air to the room is formed inside,
Switching means for switching the air path between a heat exchange ventilation mode in which total heat exchange is performed between indoor air to be exhausted and outdoor air to be supplied, and a normal ventilation mode in which total heat exchange is not performed;
A storage unit that stores the indoor target enthalpy in advance;
Indoor temperature measuring means for measuring the temperature of the indoor air, indoor humidity measuring means for measuring the humidity of the indoor air, outdoor temperature measuring means for measuring the temperature of the outdoor air, and outdoor humidity for measuring the outdoor humidity An indoor enthalpy calculated from the indoor air temperature measured by the indoor temperature measuring means and the indoor air humidity measured by the indoor humidity measuring means, and measured by the outdoor temperature measuring means. A calculation unit for calculating the outdoor enthalpy from the temperature of the air and the humidity of the outdoor air measured by the outdoor humidity measuring means;
A controller that controls the switching means to switch between a heat exchange ventilation mode and a normal ventilation mode of the heat exchange ventilator;
The control unit is configured such that the relationship between the indoor target enthalpy, the indoor enthalpy, and the outdoor enthalpy is the indoor target enthalpy <the outdoor enthalpy <the indoor enthalpy, the outdoor enthalpy <the indoor target enthalpy <the indoor enthalpy, or In the case of either the indoor enthalpy <the outdoor enthalpy <the target enthalpy, the switching means is controlled to switch the air path to the normal ventilation mode,
In the case of any of the indoor enthalpy <the indoor target enthalpy <the outdoor enthalpy, the indoor target enthalpy <the indoor enthalpy <the outdoor enthalpy, or the outdoor enthalpy <the indoor enthalpy <the indoor target enthalpy. Is a ventilator that controls switching means so as to switch the air passage to a heat exchange ventilation mode. The calculation unit calculates a control reference enthalpy that is lower by a predetermined value than the indoor target enthalpy based on the indoor target enthalpy,
The control unit is connected to an air conditioner that air-conditions the same room as the room in which the ventilator ventilates, and the relationship between the indoor target enthalpy, the indoor enthalpy, and the outdoor enthalpy is the indoor target enthalpy. <The outdoor enthalpy <the indoor enthalpy, the outdoor enthalpy <the indoor target enthalpy <the indoor enthalpy, or the indoor enthalpy <the outdoor enthalpy <the target enthalpy, and the outdoor enthalpy is the control. The ventilation apparatus according to claim 1, wherein an air conditioning suppression signal for operating the air conditioner to lower the air conditioning capacity is sent to the air conditioner when the air conditioning capacity is lower than a reference enthalpy. In the case of any of the indoor enthalpy <the indoor target enthalpy <the outdoor enthalpy, the indoor target enthalpy <the indoor enthalpy <the outdoor enthalpy, or the outdoor enthalpy <the indoor enthalpy <the indoor target enthalpy, Alternatively, when the outdoor enthalpy is higher than the control reference enthalpy, an air conditioning recovery signal for operating the air conditioner to return the air conditioning capability lowered by the air conditioning suppression signal is sent to the air conditioner. The ventilation apparatus according to claim 2. The storage unit stores the indoor target temperature in advance,
The calculation unit calculates a control reference enthalpy that is lower by a predetermined value than the indoor target enthalpy based on the indoor target enthalpy,
The control unit is communicably connected to an air conditioner that air-conditions the same room as the room in which the ventilation device ventilates,
The control unit is configured such that the relationship between the indoor target enthalpy, the indoor enthalpy, and the outdoor enthalpy is the indoor target enthalpy <the outdoor enthalpy <the indoor enthalpy, the outdoor enthalpy <the indoor target enthalpy <the indoor enthalpy, or When the indoor enthalpy <the outdoor enthalpy <the target enthalpy, and the outdoor enthalpy is lower than the control reference enthalpy and the indoor temperature is lower than the indoor target temperature, the air conditioning capacity is The ventilation apparatus according to claim 1, wherein an air conditioning suppression signal for operating the air conditioner to be lowered is sent to the air conditioner. In the case of any of the indoor enthalpy <the indoor target enthalpy <the outdoor enthalpy, the indoor target enthalpy <the indoor enthalpy <the outdoor enthalpy, or the outdoor enthalpy <the indoor enthalpy <the indoor target enthalpy, Alternatively, when the outdoor enthalpy is higher than the control reference enthalpy, or when the indoor temperature is higher than the indoor target temperature, the air conditioning that operates the air conditioner so as to return the air conditioning capability lowered by the air conditioning suppression signal. The ventilation apparatus according to claim 4, wherein a recovery signal is sent to the air conditioner. Ventilation is performed by exhausting indoor air to the outside and supplying outdoor air to the room, and heat exchange ventilation mode and total heat exchange are performed for total heat exchange between the indoor air to be exhausted and the outdoor air to be supplied. With a ventilator capable of switching between normal ventilation modes, not
An air conditioner that air-conditions the same room as the room in which the ventilator ventilates;
Indoor temperature measuring means for measuring the temperature of the indoor air;
Indoor humidity measuring means for measuring the humidity of the indoor air;
Outdoor temperature measuring means for measuring the temperature of the outdoor air;
Outdoor humidity measuring means for measuring the humidity of the outdoor air;
A storage unit that stores the indoor target enthalpy in advance;
The indoor enthalpy is calculated from the indoor air temperature measured by the indoor temperature measuring means and the indoor air humidity measured by the indoor humidity measuring means, and the outdoor air temperature and the outdoor humidity measuring means measured by the outdoor temperature measuring means. Calculating the outdoor enthalpy from the humidity of the outdoor air measured in step, and calculating a control reference enthalpy that is lower than the indoor target enthalpy by a predetermined value based on the indoor target enthalpy;
A control unit for controlling the ventilation device and the air conditioner;
The control unit is configured such that the relationship between the indoor target enthalpy, the indoor enthalpy, and the outdoor enthalpy is the indoor target enthalpy <the outdoor enthalpy <the indoor enthalpy, the outdoor enthalpy <the indoor target enthalpy <the indoor enthalpy, or If the indoor enthalpy <the outdoor enthalpy <the target enthalpy, the ventilation device is switched to the normal ventilation mode,
In the case of any of the indoor enthalpy <the indoor target enthalpy <the outdoor enthalpy, the indoor target enthalpy <the indoor enthalpy <the outdoor enthalpy, or the outdoor enthalpy <the indoor enthalpy <the indoor target enthalpy. , Switch the ventilator to heat exchange ventilation mode,
The control unit is configured such that the relationship between the indoor target enthalpy, the indoor enthalpy, and the outdoor enthalpy is the indoor target enthalpy <the outdoor enthalpy <the indoor enthalpy, the outdoor enthalpy <the indoor target enthalpy <the indoor enthalpy, or Ventilation characterized by lowering the air-conditioning capacity of the air conditioner when the indoor enthalpy is less than the outdoor enthalpy <the target enthalpy and the outdoor enthalpy is lower than the control reference enthalpy. Air conditioning system. In the case of any of the indoor enthalpy <the indoor target enthalpy <the outdoor enthalpy, the indoor target enthalpy <the indoor enthalpy <the outdoor enthalpy, or the outdoor enthalpy <the indoor enthalpy <the indoor target enthalpy, Alternatively, when the outdoor enthalpy is higher than the control reference enthalpy, the lowered air conditioning capacity of the air conditioner is returned. Ventilation is performed by exhausting indoor air to the outside and supplying outdoor air to the room, and heat exchange ventilation mode and total heat exchange are performed for total heat exchange between the indoor air to be exhausted and the outdoor air to be supplied. With a ventilator capable of switching between normal ventilation modes, not
An air conditioner that air-conditions the same room as the room in which the ventilator ventilates;
Indoor temperature measuring means for measuring the temperature of the indoor air;
Indoor humidity measuring means for measuring the humidity of the indoor air;
Outdoor temperature measuring means for measuring the temperature of the outdoor air;
Outdoor humidity measuring means for measuring the humidity of the outdoor air;
A storage unit for storing indoor target enthalpy and indoor target temperature in advance;
The indoor enthalpy is calculated from the indoor air temperature measured by the indoor temperature measuring means and the indoor air humidity measured by the indoor humidity measuring means, and the outdoor air temperature and the outdoor humidity measuring means measured by the outdoor temperature measuring means. Calculating the outdoor enthalpy from the humidity of the outdoor air measured in step, and calculating a control reference enthalpy that is lower than the indoor target enthalpy by a predetermined value based on the indoor target enthalpy;
A control unit for controlling the ventilation device and the air conditioner;
The control unit is configured such that the relationship between the indoor target enthalpy, the indoor enthalpy, and the outdoor enthalpy is the indoor target enthalpy <the outdoor enthalpy <the indoor enthalpy, the outdoor enthalpy <the indoor target enthalpy <the indoor enthalpy, or If the indoor enthalpy <the outdoor enthalpy <the target enthalpy, the ventilation device is switched to the normal ventilation mode,
In the case of any of the indoor enthalpy <the indoor target enthalpy <the outdoor enthalpy, the indoor target enthalpy <the indoor enthalpy <the outdoor enthalpy, or the outdoor enthalpy <the indoor enthalpy <the indoor target enthalpy. , Switch the ventilator to heat exchange ventilation mode,
The control unit is configured such that the relationship between the indoor target enthalpy, the indoor enthalpy, and the outdoor enthalpy is the indoor target enthalpy <the outdoor enthalpy <the indoor enthalpy, the outdoor enthalpy <the indoor target enthalpy <the indoor enthalpy, or If the indoor enthalpy <the outdoor enthalpy <the target enthalpy, and the outdoor enthalpy is lower than the control reference enthalpy and the indoor temperature is lower than the indoor target temperature, the air conditioning Ventilation air conditioning system characterized by lowering the air conditioning capacity of the device. The indoor enthalpy <the indoor target enthalpy <the outdoor enthalpy, the indoor target enthalpy <the indoor enthalpy <the outdoor enthalpy, or the outdoor enthalpy <the indoor enthalpy <the indoor target enthalpy, or the outdoor enthalpy is The ventilation air-conditioning system according to claim 8, wherein when the temperature is higher than the control reference enthalpy or the room temperature is higher than the indoor target temperature, the lowered air-conditioning capacity of the air conditioner is returned. The ventilation air conditioning according to any one of claims 6 to 9, wherein the storage unit, the control unit, and the calculation unit are provided outside the ventilation device and the air conditioner. system.

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