JP2017172943A - Heat exhaust system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge hot air in a plurality of living rooms efficiently.SOLUTION: A heat exhaust system (50) is mounted in a building (1) where a plurality of living rooms (13 and 14), and one non-living room (16) adjacent to each living room are arranged on the same floor. The heat exhaust system (50) includes a closed space (30) provide to the upper part of the non-living room, an air intake port (22) for taking external air into the non-living room, air inlets (23 and 24), and air outlets (26 and 27) provided to each living room, and a heat exhaust fan (29). The closed space (30) is adjacent to a partition wall of each of the plurality of living rooms. The air inlets (23 and 24) supply the air taken into the non-living room from the air intake port to the living rooms. The air outlets (26 and 27) discharge the air supplied to each living room from the air inlets to the closed space. In a driven state, the heat exhaust fan (29) discharges the air discharged from the air outlets (26 and 27) to the closed space to the outside.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heat exhaust system for a building such as a house, and more particularly to a heat exhaust system for a building in which a plurality of rooms and one non-room adjacent to each room are arranged on the same floor.

  Conventionally, exhaust heat fans have been used in order to forcibly exhaust indoor hot air during high temperatures such as midsummer. The exhaust heat fan is installed in the ceiling space of a living room or a non-living room. When the exhaust heat fan is used on the exhaust side, indoor air is sucked up by the operation of the exhaust heat fan and exhausted to the outside from the ceiling space.

  In Japanese Patent Laying-Open No. 2015-200337 (Patent Document 1), a blower fan (exhaust heat fan) is used on the air supply side, and a single blower fan supplies outside air to a plurality of rooms to ventilate each room. By doing so, a building ventilation system that can reduce the heat accumulation in the room at night has been proposed. In this system, air flows through the route of the outside air inlet, the filter device, the blower fan, the air inlet, the room, and the exhaust port provided on the outer wall of the cabin by the operation of the blower fan, thereby ventilating the room. Air supply from the blower fan to each room is performed via a duct.

  Moreover, from the viewpoint of simply ventilating a building (24-hour ventilation), Japanese Patent Laid-Open No. 10-25825 (Patent Document 2) is provided with one exhaust fan for exhaust on the outer wall or ceiling of the vent hole. A house ventilation system that ventilates a plurality of rooms by operation is disclosed. This system is configured so that air passes in the order of the ventilation hole on the outer wall → the room → the partition hole → the hall → the ventilation fan → the back of the hut → the gap → the outdoors.

JP 2015-200337 A Japanese Patent Laid-Open No. 10-25825

  A commercially available exhaust heat exhaust fan is intended for one room. If a heat exhaust fan is provided in each room, the initial cost will be high. Further, the ability to exhaust heat from a plurality of rooms with one exhaust heat fan is insufficient.

  Further, as in Patent Document 1, when a single exhaust heat fan is used to supply or exhaust air to a plurality of rooms using a duct, a restriction is placed on the amount of exhaust heat. This is because the pressure loss at the duct portion increases as the air volume increases. Therefore, if a large air volume is to be realized by using a duct, a fan having a large blowing capacity is required, so that the energy saving effect is small.

  In the ventilation system of Patent Document 2, only one fan is provided on the ceiling of the atrium hall. However, the purpose is for indoor ventilation throughout the four seasons, so there is not enough air volume, and there is heat in the room during high temperatures. It is difficult to eliminate. In addition, it is necessary to provide a ventilation port for taking in outdoor air on the outer wall of each living room, which may be difficult to apply to existing buildings.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an exhaust heat system that can efficiently exhaust hot air in a plurality of living rooms.

  An exhaust heat system according to an aspect of the present invention is mounted on a building where a plurality of rooms and one non-room adjacent to each room are arranged on the same floor. This exhaust heat system includes a closed space provided in an upper part of a non-living room, an air intake port for taking outside air into the non-living room, an air supply port and an exhaust port provided for each room, and an exhaust heat fan. With. The closed space is adjacent to the partition wall of each of the plurality of living rooms. The air supply opening is an opening that is provided in the partition wall and supplies air taken into the non-residential room from the air intake opening to the living room. The exhaust port is an opening that is provided in the partition wall and exhausts the air supplied from the air supply port to each room. In the driving state, the exhaust heat fan exhausts the air exhausted from each exhaust port to the closed space to the outside.

  Preferably, the exhaust heat fan is provided in a ceiling space located above the ceiling of the floor. The exhaust heat system preferably further includes a pressure sensor for detecting the pressure in the closed space, and an output control unit that adjusts the output of the exhaust heat fan in accordance with the pressure detected by the pressure sensor. .

  Preferably, the exhaust heat system further includes an opening / closing device that is provided for each exhaust port and opens / closes the exhaust port according to the temperature in the room.

  The exhaust heat system may further include an opening / closing member that is provided for each air supply port and that opens and closes the air supply port in conjunction with the open / close state of the exhaust port.

  For example, a building has a first floor on which a passage room having an atrium portion is arranged, and an uppermost floor that is located above the first floor and on which a plurality of living rooms and non-residential rooms are arranged. Further, the non-living room communicates with the passage room through the atrium. In such a case, it is desirable that the air intake port be provided on the floor of the passage chamber so that air in the underfloor space can be taken in.

  According to the present invention, hot air in a plurality of living rooms can be efficiently discharged.

It is sectional drawing which shows typically the schematic structure and ventilation path | route of the house in which the exhaust heat system which concerns on embodiment of this invention is mounted. It is a top view which shows typically an example of the room structure and ventilation path | route in the top floor of the house shown in FIG. It is a figure which shows an example of the experimental result which verified the effectiveness of the exhaust heat system which concerns on embodiment of this invention. It is a block diagram which shows the function structure of the exhaust heat system which concerns on embodiment of this invention. In embodiment of this invention, it is a figure which shows the measurement result of the pressure of each room and closed space which are located on an exhaust heat wind path in case all the living rooms of the 2nd floor are made into heat exhaust object. In embodiment of this invention, it is a figure which shows the measurement result of the pressure of each room and closed space which are located on an exhaust heat air path in case only one living room is made into the heat exhaustion object among all the living rooms of the 2nd floor. . It is a flowchart which shows the waste heat processing in embodiment of this invention. It is a flowchart which shows the output control of the exhaust heat fan in embodiment of this invention. It is a front view which shows typically the attachment state of the opening / closing member for the air supply opening | mouth of a living room in the modification of embodiment of this invention. It is sectional drawing which shows typically the attachment state of the opening-and-closing member for the air supply opening | mouth of a living room in the modification of embodiment of this invention.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

(About overview)
With reference to FIG. 1 and FIG. 2, the outline | summary of the waste heat system 50 which concerns on this Embodiment is demonstrated. FIG. 1 is a cross-sectional view schematically showing a schematic configuration and a ventilation path of a house 1 in which an exhaust heat system 50 is mounted. FIG. 2 is a plan view schematically showing an example of a room configuration and a ventilation path on the top floor of the house 1.

  The house 1 is a two-story building, for example. On the first floor of the house 1, a living room 11 and a non-living room 12 are arranged. The living room 11 is a living room, for example, and the non-living room 12 is a passage room (corridor or entrance hall) in which an ascending entrance of the stairs 17 is provided. On the second floor (that is, the top floor) of the house 1, a plurality of living rooms 13, 14, 15 and a non-living room 16 are arranged. The non-living room 16 is adjacent to each living room 13-15. The living rooms 13 to 15 are, for example, private rooms such as bedrooms, and the non-living room 16 is a passage room (corridor) in which a descending entrance of the stairs 17 is provided. In other words, the staircase 17 has a staircase 17 as a blow-off portion, and the non-living room 16 on the second floor and the non-living room 12 on the first floor communicate with each other through the staircase 17 without partitioning. Therefore, these non-living rooms 12 and 16 constitute one hall part.

  In this embodiment, the “living room” means a room that is continuously used for the purpose of residence, work, entertainment, etc., and the “non-living room” is a non-living room for hygiene purposes. It is a room excluding rooms (for example, toilets and bathrooms) and storage rooms.

  The indoor temperature of the house 1 increases as the upper floor increases. Therefore, when air conditioning (cooling) is stopped in a high temperature period such as midsummer with the window closed, hot air stays in the second-floor rooms 13 to 15. For example, if the air-conditioning timer expires during nighttime sleep in midsummer, it will be awkward to sleep because of the heat. Therefore, a heat exhaust fan 29 is provided in the ceiling back space on the second floor of the house 1, that is, the back space 19 for exhaust heat of the living rooms 13 to 15. The exhaust heat fan 29 is a sirocco fan, for example. In the present embodiment, the exhaust heat of all the rooms 13 to 15 on the second floor is made possible by the operation of the single exhaust heat fan 29.

  An air intake port 22 is provided in the floor 12 a of the non-living room 12 on the first floor. Thereby, the air in the underfloor space 10 can be taken into the non-living rooms 12 and 16 through the air intake port 22. The air intake port 22 is provided, for example, at a position below the staircase 17 in the floor 12a. The underfloor space 10 is constantly ventilated through an underfloor vent (gap) 21 between the outer wall of the house 1 and the foundation.

  In addition, in order to prevent the cold air of the underfloor space 10 from flowing into the non-residential room 16 in the cold season such as midwinter, a known electric shutter 24 (see FIG. 4) linked to the exhaust heat fan 29 is provided in the air intake port 22. ) Is desirable. The electric shutter 24 opens only when the indoor (non-residential room 12) side has a negative pressure, so that the air intake port 22 can be closed when the indoor side has a positive pressure.

  Since the non-living room 16 is adjacent to the living rooms 13 to 15, partition walls 13 a, 14 a, and 15 a are disposed between the non-living room 16 and the living rooms 13 to 15, respectively. Air supply ports 23 to 25 for supplying the air in the non-living room 16 to the living rooms 13 to 15 are provided below the partition walls 13a, 14a, and 15a, respectively. The air supply ports 23 to 25 may not be openings dedicated to the present system, but may be openings that are opened and closed by the fittings (doors) 13b, 14b, and 15b of the respective living rooms 13 to 15. Exhaust ports 26 to 28 for exhausting the air supplied to the living rooms 13 to 15 are provided in the upper portions of the partition walls 13a, 14a, and 15a, respectively.

  Here, in the present embodiment, the air in the living rooms 13 to 15 is exhausted from the exhaust ports 26 to 28 to one closed space 30. The closed space 30 is provided in the upper part of the non-living room 16 and is adjacent to the partition walls 13a, 14a, and 15a.

  Specifically, the ceiling 31 of the non-residential room 16 is provided at a position lower than the other ceilings (including the ceilings of the living rooms 13 to 15), and the ceiling 31 (hereinafter referred to as “falling ceiling”) 31 A closed space 30 is formed. The exhaust heat fan 29 is located in the upper part of the closed space 30. The air in the closed space 30 is exhausted to the cabin space 19 only by driving the exhaust heat fan 29 and is exhausted from the cabin space 19 to the outdoors.

  In addition, the falling ceiling 31 is comprised only by the plate-shaped member containing the face material for makeup | decoration, and the suction inlet of the exhaust heat fan 29 is provided in the ceiling basement of the 2nd floor, for example. Further, the falling ceiling 31 may not be provided in the entire region of the non-living room 16 in plan view, and may be provided only in a partial region of the non-living room 16 as shown in FIG. In the latter case, the closed space 30 is surrounded by the side wall 32 extending from the end of the descending ceiling 31 to the other ceiling and the partition walls 13a, 14a, 15a intersecting the descending ceiling 31.

  By configuring the exhaust heat system 50 as described above, the operation of the exhaust heat fan 29 causes the underfloor ventilation port 21 → the air intake port 22 → the non-rooms 12 and 16 → the air supply ports 23 to 25 → the rooms 13. Air can be made to flow in the order of? 15 → exhaust ports 26 to 28 → closed space 30 → exhaust heat fan 29 → shed space → outdoor.

In FIG. 3, the exhaust heat fan 29 is operated at an output (air volume) of 1000 m ³ / h as an example of an experimental result verifying the effectiveness of the exhaust heat system 50 according to the present embodiment. The amount of air flowing into each room when 15 forced ventilations are performed is indicated by numerical values. In this experiment, the air inflow per room on the second floor is about 300 m ³ / h, and a good result can be confirmed. That is, according to the present embodiment, the hot air in the living rooms 13 to 15 can be efficiently discharged by only one common exhaust heat fan 29. In addition to the air supply ports 23 to 25, a small amount of outdoor air flows into the living rooms 13 to 15 from the gaps of the windows on the outer wall.

(About functional configuration)
Next, the functional configuration of the exhaust heat system 50 will be described. FIG. 4 is a block diagram showing a functional configuration of the exhaust heat system 50.

  The exhaust heat system 50 includes an operation unit 52 and a control device 51 in addition to the exhaust heat fan 29 described above. The operation unit 52 receives an instruction from a user (typically a resident of the house 1). The operation unit 52 is provided, for example, on the wall surface of the second floor non-residential room 16.

  The control device 51 is electrically connected to the exhaust heat fan 29 and the operation unit 52. The control device 51 includes a control unit 61 that performs various calculations and processes, a storage unit 62 that stores various data and programs, and a time measuring unit 63 that performs time measuring operations. The timer 63 may be a timer that measures time according to an instruction from the controller 61, or may be a clock that always measures the date and time.

  The control unit 61 operates and stops the exhaust heat fan 29 according to a signal from the operation unit 52. In the operation unit 52, when a timer reservation is made for the exhaust heat operation, reservation information (for example, reservation time or elapsed time since the reservation) is stored in the storage unit 62. When the reservation information is stored in the storage unit 62, the control unit 61 starts the operation of the exhaust heat fan 29 at a user-desired timing based on the reservation information. The operation of the exhaust heat fan 29 may be stopped when a predetermined time has elapsed from the start of the operation.

  When the air conditioning of all the living rooms 13 to 15 is stopped, such as during absence, the operation of the exhaust heat fan 29 can eliminate the heat accumulation in all the living rooms 13 to 15. Thereby, the discomfort at the time of going home in midsummer is reduced.

  On the other hand, while at home, there is a possibility that a room using air conditioning and a room not using air conditioning are mixed. As described above, when the air supply opening is realized by the opening for the fitting of each room, the air supply opening of the air-conditioned room is closed, but from the non-living room 16 through a gap or the like under the fitting. A small amount of air can also flow into air-conditioned rooms. In such a case, if the exhaust port of the air-conditioned room is in an open state, the air-conditioning efficiency of the air conditioner (not shown) is lowered. Therefore, it is desirable to close the exhaust port for the air-conditioned room.

  Therefore, the exhaust heat system 50 according to the present embodiment includes opening / closing devices 26a, 27a, and 28a that automatically open and close the exhaust ports 26 to 28 according to the temperature of each chamber. That is, one opening / closing device is provided for each exhaust port of each living room 13-15.

  Each of the switchgears 26a to 28a is a known temperature-sensing switchgear. For example, when the room temperature is equal to or higher than a predetermined temperature (for example, 28 ° C.), the target exhaust port is opened and the room temperature is less than the predetermined temperature. In some cases, it has a louver whose angle can be changed to close the outlet of the subject. In addition, although the switchgear 26a-28a shall be an apparatus which operate | moves stand-alone, the control part 61 may perform a part of function of the switchgear 26a-28a.

  Since the temperature-sensitive opening / closing devices 26a to 28a are provided in the respective living rooms 13 to 15, it is possible to close only the exhaust port of the air-conditioned room and block the exhaust flow path from the air-conditioned room. Therefore, it is possible to effectively exhaust heat by using only the room not using air conditioning as the room subject to heat removal.

Here, referring to FIG. 5 and FIG. 6, when the output of the exhaust heat fan 29 is constant and the maximum output (1000 m ³ / h), the inside of the enclosed space 30 due to the difference in the number of rooms to be exhausted heat. The influence of pressure (negative pressure degree) will be described.

  In FIG. 5, each room (all living rooms 13 to 15, non-living rooms 12 and 16) located on the exhaust heat air passage when all living rooms 13 to 15 on the second floor are targeted for exhaust heat (hereinafter referred to as pattern A). The measurement results of the pressure in each of the closed spaces 30 are shown. In FIG. 6, as an example, when only one living room 14 out of the living rooms 13 to 15 is a target for exhaust heat (hereinafter referred to as pattern B), each room located on the exhaust heat air passage (the living room 14 and the non-living room 12). 16) and the measurement results of the pressures of the enclosed space 30 are shown. The pressure in each chamber located on the exhaust heat air passage indicates a differential pressure from the outdoor atmospheric pressure, and the pressure in the closed space 30 indicates a differential pressure from the atmospheric pressure in the cabin space 19.

  The open / close states of the air supply port and the exhaust port in each pattern are as follows. In the pattern A, the air supply ports 23 to 25 and the exhaust ports 26 to 28 of all the living rooms 13 to 15 are opened. In the pattern B, the air supply ports 23 and 25 and the exhaust ports 26 and 28 of the living rooms 13 and 15 are closed, and the air supply port 24 and the exhaust ports 27 of the remaining living rooms 14 are opened.

  In the pattern A, as shown in FIG. 5, the negative pressure degree of each chamber located on the exhaust heat air passage is the same (3.1 Pa). Although the negative pressure degree (6 Pa) in the closed space 30 is larger than the negative pressure degree of each chamber, it is twice or less.

  Also in the pattern B, as shown in FIG. 6, the negative pressure degree of each chamber located on the exhaust heat air passage is substantially equal (2.6 Pa to 2.7 Pa). On the other hand, the negative pressure degree (13.4 Pa) in the closed space 30 is considerably larger than the negative pressure degree in each chamber, and more than twice the negative pressure degree in the closed space 30 in the case of the pattern A. It has become. This is because the smaller the opening area of the exhaust ports 26 to 28 is, the larger the negative pressure in the closed space 30 is.

  From these results, it is understood that when the exhaust heat fan 29 is always operated at a constant and maximum output, the output of the exhaust heat fan 29 is uselessly larger in the pattern B than in the pattern A. Therefore, as shown in FIG. 4, the exhaust heat system 50 according to the present embodiment corresponds to the pressure sensor 41 that detects the pressure in the closed space 30 and the pressure in the closed space 30 detected by the pressure sensor 41. And an output control unit 64 that adjusts the output of the heat exhaust fan 29. The function of the output control unit 64 is realized by the control unit 61 executing software, but may be realized by hardware.

  When the negative pressure level in the closed space 30 is too large as in the pattern B, the output control unit 64 outputs the output of the exhaust heat fan 29 so that the difference from the negative pressure level of each chamber becomes as small as possible. Control to lower. Specifically, when the degree of negative pressure in the closed space 30 detected based on the signal from the pressure sensor 41 is larger than a threshold value set as the upper limit value, the output of the exhaust heat fan 29 is lowered. In addition, it is desirable for the threshold value to be determined individually for each house 1 based on the previous experimental results.

  When the output control unit 64 performs such output control, the power consumption of the exhaust heat fan is suppressed when a room not using air conditioning (that is, a room subject to heat exhaustion) and a room using air conditioning coexist. be able to. As a result, the energy saving effect can be improved as compared with the case where the output of the exhaust heat fan 29 is constant regardless of the number of rooms subject to exhaust heat.

  In FIG. 4, among the constituent elements included in the present system 50, elements that do not transmit and receive signals to and from the control device 51 are indicated by broken line frames.

(About operation)
Next, the operation of the exhaust heat system 50 will be described. FIG. 7 is a flowchart showing the exhaust heat treatment in the present embodiment. The exhaust heat treatment shown in FIG. 7 is realized by the control unit 61 of the control device 51 reading and executing a program stored in advance in the storage unit 62. Note that at the start of this process, the number of rooms whose exhaust ports are open, that is, rooms where heat is to be exhausted, is 1 or more.

  The control unit 61 starts the operation of the exhaust heat fan 29 according to a start instruction from the user input via the operation unit 52 or based on reservation information stored in the storage unit 62 (step S1). ). At the start of operation, the output level of the exhaust heat fan 29 is “strong (maximum output)”. When the operation of the exhaust heat fan 29 is started, an air flow is generated indoors, and the non-rooms 12 and 16 become negative pressure together with the room to be exhausted heat, so the electric shutter 22a of the first floor 12a is operated, The air intake port 22 is opened (step S2).

  Next, the output control unit 64 of the control unit 61 performs output control of the exhaust heat fan 29 (step S3). The output control will be described with reference to a subroutine in FIG.

  Referring to FIG. 8, output control unit 64 detects the pressure in closed space 30, that is, the degree of negative pressure, based on a signal from pressure sensor 41 (step S11). If the detected negative pressure level is equal to or less than the threshold value (NO in step S12), the output level of exhaust heat fan 29 is maintained without being changed. On the other hand, when the detected negative pressure degree is larger than the threshold value (YES in step S12), output control unit 64 lowers the output level of exhaust heat fan 29 from “strong” to “weak”. (Step S13). Thereby, the power consumption of the exhaust heat fan 29 can be suppressed while maintaining the exhaust heat effect of the room subject to the exhaust heat.

  Referring to FIG. 7 again, such output control is desirably performed continuously until an end instruction is given (NO in step S4). Thereby, it is possible to cope with a case where the number of rooms to be exhausted heat is reduced during the operation of the exhaust heat fan 29. In addition, the case where the number of rooms to be exhausted heat increases during the operation of the exhaust heat fan 29 is also assumed. In such a case, if the output level of the exhaust heat fan 29 remains “weak”, the negative pressure level in the closed space 30 becomes lower than the negative pressure level of the room to be exhausted heat, and the exhaust heat target. Ventilation air volume in the room may be insufficient. Therefore, although not shown, when the degree of negative pressure in the closed space 30 is not more than the threshold value, for example, control is performed to increase the output of the exhaust heat fan 29 from “weak” to “strong”. May be.

  In response to an end instruction from the user or when a set time has elapsed from the start of operation (YES in step S4), control unit 61 stops the operation of exhaust heat fan 29 (step S5). Thereby, since the room and the non-living rooms 12 and 16 to be exhausted heat gradually become positive pressure, the electric shutter 22a of the first floor 12a is operated, and the air intake port 22 is closed (step S6). This is the end of the exhaust heat treatment.

  As described above, according to the exhaust heat system 50 according to the present embodiment, one exhaust heat is provided by disposing the closed space 30 above the non-residential room 16 adjacent to each of the plurality of living rooms 13 to 15. Only the fan 29 can efficiently exhaust heat from the second-floor rooms 13 to 15 without using a duct. Therefore, it is possible to employ the exhaust heat fan 29 that has a relatively low blowing capacity. As a result, the initial cost can be reduced and the energy saving effect can be increased.

  Moreover, since the exhaust heat fan 29 is installed in the upper part of this closed space 30, even when the air volume of the exhaust heat fan 29 is increased, noise to the living rooms 13 to 15 can be prevented. Therefore, it is possible to perform the exhaust heat operation comfortably even at bedtime at night.

  Moreover, since the air of the underfloor space 10 is sent into each of the living rooms 13 to 15, heat can be exhausted without opening the windows. Therefore, although it is dangerous for crime prevention to keep the window open while you are away or sleeping, in this system 50, it is possible to exhaust the heat from the living rooms 13 to 15 while maintaining safety.

  In addition, since the air supply to the living rooms 13 to 15 is performed from the openings (air supply ports 23 to 25) of the partition walls 13a to 15a facing the non-living room 16, there are no openings such as ventilation openings on the outer wall. Even so, exhaust heat can be appropriately performed. Therefore, the exhaust heat system 50 of the present embodiment can be easily applied to an existing house.

  Further, since the temperature-sensing opening / closing devices 26a, 27a, and 28a are respectively provided at the exhaust ports 26 to 28, the exhaust path from the air-conditioned room can be automatically shut off. Moreover, since the output adjustment of the exhaust heat fan 29 is performed by shutting off the exhaust path from the air-conditioned room, the energy saving effect can be further increased.

  When the output level of the exhaust heat fan 29 can be changed in three or more stages, the output level may be finely adjusted according to the degree of negative pressure in the closed space 30. For example, when the output level of the exhaust heat fan 29 can be set to three levels of strong, medium, and weak, it is a strong level when all three rooms 13 to 15 are exhaust heat targets, and only one of these rooms. A plurality of threshold values to be compared with the degree of negative pressure in the closed space 30 are set so that the level is a weak level when the target is exhaust heat and two of these rooms are a medium level when the target is exhaust heat. Also good.

  In addition, when the output level of the exhaust heat fan 29 can be changed in three or more stages, even when all the living rooms 13 to 15 are exhaust heat targets, the negative pressure in the closed space 30 and the negative pressure in the living rooms 13 to 15 are reduced. The output level of the exhaust heat fan 29 may be adjusted so as to reduce the difference from the degree of pressure.

(Modification)
In the above embodiment, the air supply ports 23 to 25 of the living rooms 13 to 15 on the second floor are openings for attaching the fittings 13b to 15b, and the resident manually opens and closes the air supply ports 23 to 25. explained. On the other hand, in this modification, the air supply ports 23 to 25 can be opened and closed in conjunction with the opening and closing of the exhaust ports 26 to 28, respectively. That is, the exhaust heat system 50 in the present modification further includes an opening / closing member for opening / closing the air supply port in association with the open / closed state of the exhaust port for each air supply port. Thereby, when the timer of an air conditioning expires in the middle of going to bed at night, it is possible to save the trouble of opening the fittings of the living room. Therefore, it is possible to more easily exhaust the room heat above the predetermined temperature.

  FIGS. 9 and 10 schematically show an opening / closing member 70 for opening / closing the air supply port 23 of the living room 13 as an example. In this example, the air supply port 23 is configured by, for example, a plurality of slit-like through holes provided in the lower part of the fitting 13b. In addition, even when the air supply port 23 is provided in the joinery 13b in this way, the joinery 13b is attached to the partition wall 13a, and therefore, the air supply port 23 can be regarded as being provided in the partition wall 13a.

  In this modification, the opening / closing member 70 is attached to the surface of the fitting 13b on the side of the living room 13 so as to cover the air supply port 23. The opening / closing member 70 is, for example, a plate-like member that can be opened / closed in the vertical direction by wind pressure from the non-living room 16 side with a hinge 70a provided at the upper end as an axis.

  In this modified example in which such an opening / closing member 70 is attached to the joinery 13b, the fitting 13b of the living room 13 is closed and the exhaust port 26 of the living room 13 is closed (the air conditioner is on). It is assumed that the operation of the heat fan 29 is started. In this case, since the exhaust path from the living room 13 is blocked, the living room 13 does not have so much negative pressure, and the wind pressure that pushes the opening and closing member 70 from the non-living room 16 side is not applied. Therefore, the air supply port 23 remains blocked by the opening / closing member 70, and the air supply path from the non-room 16 to the room 13 is blocked.

  On the other hand, it is assumed that the operation of the exhaust heat fan 29 is started in a state where the fitting 13b of the living room 13 is closed and the exhaust port 26 of the living room 13 is opened (air conditioner off state). In this case, since the exhaust path from the living room 13 is opened, the living room 13 has a negative pressure, and the opening / closing member 70 is pushed up by the wind pressure from the non-living room 16 side. Accordingly, the air supply port 23 is in an open state, and the air supply path from the non-room 16 to the room 13 through the air supply port 23 is opened.

  In addition, you may employ | adopt the opening-and-closing mechanism (not shown) which can implement | achieve opening and closing of the opening-and-closing member 70 according to the temperature in the living room 13 irrespective of a wind pressure. Specifically, for example, the opening / closing mechanism is responsive to an elastic member that urges the opening / closing member 70 away from the fitting 13b, a sensing unit that senses the temperature in the living room 13, and a temperature sensed by the sensing unit. And an actuator that moves back and forth in the vertical direction. The actuator is disposed so as to press the opening / closing member 70 toward the fitting 13b. The opening degree (inclination angle) of the opening / closing member 70 can be adjusted in accordance with the downward projecting length of the actuator.

(Other variations)
In the above-described embodiment, the operation of the exhaust heat fan 29 is started in response to an operation start instruction from the user or based on the reservation information stored in the storage unit 62. However, as shown in FIG. 2, the temperature sensors 42 to 44 are provided in the living rooms 13 to 15 on the second floor, respectively, and the temperature of any one of the living rooms continues for a predetermined time (for example, 10 minutes) or longer for a predetermined temperature (for example, 28). When the temperature becomes equal to or higher than (° C.), the operation may be started.

  Moreover, in the said embodiment, although the exhaust ports 26-28 were set to either a full open state and a fully closed state, according to the temperature of a living room, the opening degree of the exhaust ports 26-28 is set as follows. It may be adjustable in a plurality of stages such as a half-open state. In that case, the opening degree of the air supply ports 23 to 25 may be linked with the opening degree of the exhaust ports 26 to 28.

  Further, in the above embodiment, the temperature detection type opening / closing devices 26a to 28a are provided in the exhaust ports 26 to 28, respectively, and the pressure in the closed space 30 is intentionally changed by opening and closing the exhaust ports 26 to 28, The example which performs output control of the exhaust heat fan 29 was demonstrated. However, the exhaust heat system 50 may not include the temperature-sensitive opening / closing devices 26a, 27a, and 28a. For example, the opening and closing of the exhaust ports 26 to 28 may be performed manually.

  Moreover, in the said embodiment, although the ceiling of the non-residential room 16 was set as the falling ceiling 31, and the closed space 30 was formed on the falling ceiling 31, it is not limited. For example, the closed space may include a space in a duct that communicates with at least one of the exhaust ports 26 to 28 and the suction port of the exhaust heat fan 29.

  Moreover, in the said embodiment, although the non-residential room 16 decided to adjoin the three living rooms 13-15, what is necessary is just to adjoin several (two or more) living rooms. When there is a room that is not adjacent to the non-room 16 on the same floor, a duct that connects the exhaust port of the room and the suction port of the exhaust heat fan 29 may be partially used.

  Moreover, in the said embodiment, although the house 1 showed the example which is a 2 story building, the building which has the 3rd floor or more may be sufficient, and a 1 story building may be sufficient. In any case, it is desirable that the living rooms 13 to 15 and the non-living room 16 are arranged on the top floor, and the exhaust heat fan 29 is provided in the ceiling space on the top floor. When the house 1 is a one-story building, the air intake port 22 may be provided on the floor of the non-residential room 16.

  Moreover, in the said embodiment, although the example where the air intake port 22 was provided in the floor 12a of the non-residential room 12 was shown, if external air can be taken in into the non-residential room 16, the installation position will not ask | require.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  1 house, 10 floor space, 11, 13-15 living room, 12, 16 non-room, 12a floor, 13a, 14a, 15a partition wall, 13b, 14b, 15b joinery, 17 stairs, 19 shed space, 21 floor vent , 22 Air intake port, 22a Electric shutter, 23-25 Air supply port, 26-28 Exhaust port, 26a, 27a, 28a Open / close device, 29 Heat exhaust fan, 30 Closed space, 31 Ceiling (falling ceiling), 32 Side wall, 41 Pressure sensor, 42-44 Temperature sensor, 50 Waste heat system, 51 Control device, 52 Operation part, 61 Control part, 62 Storage part, 63 Timekeeping part, 64 Output control part, 70 Opening / closing member.

Claims (5)

A waste heat system for a building in which a plurality of rooms and one non-room adjacent to each room are arranged on the same floor,
A closed space provided in an upper part of the non-living room and adjacent to a partition wall of each of the plural living rooms;
An air intake port for taking outside air into the non-living room;
An air supply port for supplying air to the living room, which is provided in each partition wall, and is supplied to the non-residential room from the air intake port;
An exhaust port provided on each of the partition walls, for exhausting air supplied from the air supply port to each living room into the closed space;
An exhaust heat system comprising: an exhaust heat fan for exhausting the air exhausted from the exhaust ports to the closed space to the outside. The exhaust heat fan is provided in a ceiling space located above the ceiling of the floor,
A pressure sensor for detecting pressure in the enclosed space;
The exhaust heat system according to claim 1, further comprising: an output control unit that adjusts an output of the exhaust heat fan according to a pressure detected by the pressure sensor.   The exhaust heat system according to claim 1, further comprising an opening / closing device that is provided for each of the exhaust ports and opens and closes the exhaust port according to a temperature in the living room.   The exhaust heat system according to any one of claims 1 to 3, further comprising an opening / closing member that is provided for each of the air supply ports and that opens and closes the air supply port in conjunction with an opening / closing state of the exhaust port. The building has a first floor on which a passage room having an atrium is arranged, and an uppermost floor that is located above the first floor and in which the plurality of living rooms and the non-living room are arranged,
The non-living room communicates with the passage room through the atrium.
The exhaust heat system according to any one of claims 1 to 4, wherein the air intake port is provided on the floor of the passage chamber so as to be able to take in air in an underfloor space.

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