Air conditioning method, air conditioning system, and building

Abstract

To adjust a temperature of an air-conditioned room, which is a living room provided with an air conditioner, and a temperature of a living room different from the air-conditioned room to preferable temperatures with less energy than when the temperatures are directly adjusted by the air conditioner.SOLUTION: Air-conditioning system 3 includes air-conditioning room 21 in which air-conditioning device 32 is provided, air-blowing path 41 that communicates with heat-recycling chamber 22 and has upper air-inlet port 46 that opens at the top of air-conditioning room 21, lower air-inlet port 47 that opens at the bottom of air-conditioning room 21, and discharge port 48 that opens into heat-recycling chamber 22, air-blower 42 that is provided in air-blowing path 41 and sends the air of air-conditioning room 21 to heat-recycling chamber 22, and air-inlet switching devices 46S and 47S that switch the inflow air-inlet through which the air of air-conditioning room 21 flows into air-blowing path 41 between upper air-inlet port 46 and lower air-inlet port 47. The inflow suction port is switched between the upper suction port 46 and the lower suction port 47 according to whether the temperature of the heat recycling chamber 22 is controlled with less energy or positively.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an air conditioning method using an air conditioning system installed in a building, an air conditioning system for a building, and a building equipped with an air conditioning system. [Background technology]

[0002] There are various technologies related to air conditioning in buildings such as apartment buildings. For example, Patent Document 1 describes a central air conditioning system that supplies conditioned air generated by heating or cooling an air conditioner to each of multiple rooms through ducts to condition the rooms. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2024-256 Summary of the Invention [Problem to be solved by the invention]

[0004] The central air conditioning system described in Patent Document 1 is inefficient because it supplies conditioned air to unoccupied rooms. Furthermore, central air conditioning systems generally require dedicated equipment, resulting in high initial costs (installation costs). While installing an air conditioner in each room is an option, installing an air conditioner in every room increases the number of air conditioners installed, resulting in higher total costs. Therefore, it is possible to reduce initial costs by installing air conditioners only in frequently used rooms and providing air conditioning only in those rooms. However, in this case, there is a risk that residents may experience heat shock symptoms due to the temperature difference when moving from an air-conditioned room to an unconditioned room. Given this background, there is a need for a system that can adjust the temperature of multiple rooms using less energy while reducing initial costs.

[0005] In view of the above background, an object of the present invention is to provide an air conditioning method, an air conditioning system, and a building equipped with an air conditioning system that can adjust the temperature of not only the air-conditioned room, which is a room where an air conditioning device is installed, but also other rooms other than the air-conditioned room, to a desired temperature using less energy than when adjusting the temperature directly with the air conditioning device. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides an air conditioning method using an air conditioning system (3) installed in a building (1), the air conditioning system being connected to an air-conditioned room (21) that is a room equipped with an air conditioner (32) that supplies conditioned air whose temperature has been adjusted by heating or cooling, and at least one heat reuse room (22) that is a room different from the air-conditioned room, and having an upper intake port (46) that opens to an upper part of the air-conditioned room, a lower intake port (47) that opens to a lower part of the air-conditioned room, and a discharge port (48) that opens to the heat reuse room. the air-conditioning chamber into the heat-recycling chamber; an air-supply passage (41) through which the air is supplied; a blower (42) provided in the air-supply passage for sending air from the air-conditioning chamber to the heat-recycling chamber; and an air-supply port switching device (46S, 47S, 51) for switching an inlet / suction port, through which the air from the air-conditioning chamber flows into the air-supply passage, between the upper air-supply port and the lower air-supply port. The inlet / suction port is switched between the upper air-supply port and the lower air-supply port depending on whether the heat-recycling chamber is to be brought into a state in which the temperature is regulated with less energy or the heat-recycling chamber is to be actively regulated in temperature.

[0007] According to this aspect, the blower sends air from the air-conditioning chamber to the heat-reuse chamber, where the air conditioned by the air conditioner is reused as conditioned air in the heat-reuse chamber, thereby conditioning the heat-reuse chamber. This allows the temperature of the air-conditioning chamber and the heat-reuse chamber to be adjusted with less energy than when the air conditioner directly adjusts the temperature of both the air-conditioning chamber and the heat-reuse chamber. The inlet air intake is switched between the upper air intake and the lower air intake depending on whether the state is to adjust the temperature of the heat-reuse chamber with less energy or to actively adjust the temperature of the heat-reuse chamber. This allows the temperature of the heat-reuse chamber to be adjusted to a desired temperature.

[0008] In the above aspect, the air conditioning equipment has two operating modes during heating, in which it supplies heated conditioned air: a heating energy saving mode in which the temperature of the heat reuse chamber is adjusted using less energy, and a heating comfort mode in which the temperature of the heat reuse chamber is adjusted actively.When the heating energy saving mode is selected, the intake port switching device switches the inlet intake to the lower intake, and when the heating comfort mode is selected, the intake port switching device switches the inlet intake to the upper intake.

[0009] According to this aspect, when the energy-saving heating mode is selected, the inlet / inlet is switched to the lower inlet, so that relatively low-temperature air in the lower part of the air-conditioned room is sent from the lower inlet to the heat reuse chamber via the air supply passage. When the comfort heating mode is selected, the inlet / inlet is switched to the upper inlet, so that relatively high-temperature air in the upper part of the air-conditioned room is sent from the upper inlet to the heat reuse chamber via the air supply passage. Therefore, the temperatures of the air-conditioned room and the heat reuse chamber can be adjusted to appropriate temperatures during heating.

[0010] In the above aspect, the air conditioning equipment has two operating modes during cooling, in which it supplies cooled conditioned air: an energy-saving mode during cooling, in which the temperature of the heat reuse chamber is adjusted using less energy, and a comfortable mode during cooling, in which the temperature of the heat reuse chamber is adjusted actively.When the energy-saving mode during cooling is selected, the air inlet switching device switches the inlet to the upper air inlet, and when the comfortable mode during cooling is selected, the air inlet switching device switches the inlet to the lower air inlet.

[0011] According to this aspect, when the energy-saving cooling mode is selected, the inlet / inlet is switched to the upper inlet, and relatively high-temperature air in the upper part of the air-conditioned room is sent from the upper inlet to the heat reuse chamber via the air supply passage. When the comfort cooling mode is selected, the inlet / inlet is switched to the lower inlet, and relatively low-temperature air in the lower part of the air-conditioned room is sent from the lower inlet to the heat reuse chamber via the air supply passage. Therefore, the temperatures of the air-conditioned room and the heat reuse chamber can be adjusted to appropriate temperatures during cooling.

[0012] In the above aspect, the air conditioning system further includes a control device (52) that controls the air inlet switching device, and the control device switches the inlet between the upper air inlet and the lower air inlet depending on whether the heat reuse chamber is to be in a state where it is temperature-adjusted with less energy or a state where it is temperature-adjusted actively.

[0013] According to this aspect, it becomes easy to switch the inlet between the upper inlet and the lower inlet.

[0014] Another aspect of the present invention is an air conditioning system (3) for a building, comprising: an air conditioning room (21), which is a living space provided with an air conditioning device (32) that supplies conditioned air whose temperature has been adjusted by heating or cooling; and an air supply passage (41) that communicates with at least one heat reuse room (22), which is a living space different from the air conditioning room, and has an upper air intake (46) that opens to the top of the air conditioning room, a lower air intake (47) that opens to the bottom of the air conditioning room, and an air discharge port (48) that opens to the heat reuse room; a blower (42) that is provided in the air supply passage and sends air from the air conditioning room to the heat reuse room; and an air intake switching device (46S, 47S, 51) that switches the inlet air intake that allows air from the air conditioning room to flow into the air supply passage between the upper air intake and the lower air intake.

[0015] According to this aspect, the blower sends air from the air-conditioning chamber to the heat-reuse chamber, where the air conditioned by the air conditioner is reused as conditioned air in the heat-reuse chamber, thereby conditioning the heat-reuse chamber. This allows the temperature of the air-conditioning chamber and the heat-reuse chamber to be adjusted with less energy than when the air conditioner directly adjusts the temperature of the air-conditioning chamber and the heat-reuse chamber. The inlet air intake can be switched between the upper air intake and the lower air intake. This allows the temperature of the heat-reuse chamber to be adjusted to a desired temperature.

[0016] In the above aspect, it is preferable to further include a control device (52) that controls the suction port switching device.

[0017] According to this aspect, it becomes easy to switch the inlet between the upper inlet and the lower inlet.

[0018] In the above aspect, the building may have a plurality of the heat recycling chambers, and the air conditioning system may further include an outlet switching device (44) that switches the outlet outlet, through which the air in the air-conditioned chamber flows out of the air supply passage, between the outlets of the plurality of the heat recycling chambers.

[0019] According to this aspect, the air temperature of a desired one of the heat reuse chambers can be adjusted to a preferred temperature.

[0020] In the above aspect, the air conditioning system may have, as the air inlet switching device, an upper air inlet opening / closing device (46S) that opens and closes the upper air inlet, and a lower air inlet opening / closing device (47S) that opens and closes the lower air inlet.

[0021] According to this aspect, the inlet port can be easily switched between the upper port and the lower port.

[0022] In the above aspect, the air supply passage may include an upper suction port passage (41A) communicating with the upper suction port, a lower suction port passage (41B) communicating with the lower suction port, and a discharge port passage (41C) communicating with the discharge port, and the suction port switching device may include an suction switching valve (51) connected to the upper suction port passage, the lower suction port passage, and the discharge port passage.

[0023] According to this aspect, it becomes easy to switch the inlet between the upper inlet and the lower inlet.

[0024] Another aspect of the present invention is a building (1) equipped with an air conditioning system (3), the air conditioning system comprising: an air conditioning room (21), which is a living space equipped with air conditioning equipment (32) that supplies conditioned air whose temperature has been adjusted by heating or cooling; and an air supply passage (41) that communicates with at least one heat reuse room (22), which is a living space different from the air conditioning room, and has an upper air intake (46) that opens to the top of the air conditioning room, a lower air intake (47) that opens to the bottom of the air conditioning room, and an air discharge port (48) that opens to the heat reuse room; a blower (42) that is provided in the air supply passage and sends air from the air conditioning room to the heat reuse room; and an air intake switching device (46S, 47S, 51) that switches the inlet air intake that allows air from the air conditioning room to flow into the air supply passage between the upper air intake and the lower air intake.

[0025] According to this aspect, the blower sends air from the air-conditioning chamber to the heat-reuse chamber, where the air conditioned by the air conditioner is reused as conditioned air in the heat-reuse chamber, thereby conditioning the heat-reuse chamber. This allows the temperature of the air-conditioning chamber and the heat-reuse chamber to be adjusted with less energy than when the air conditioner directly adjusts the temperature of the air-conditioning chamber and the heat-reuse chamber. The inlet air intake can be switched between the upper air intake and the lower air intake. This allows the temperature of the heat-reuse chamber to be adjusted to a desired temperature. [Effects of the Invention]

[0026] The present invention provides an air conditioning system, an air conditioning method, and a building equipped with an air conditioning system that can adjust the temperature of an air-conditioned room, which is a room equipped with an air conditioner, and the temperature of a room other than the air-conditioned room, to desired temperatures using less energy than when adjusting the temperature directly with the air conditioner. [Brief explanation of the drawings]

[0027] [Figure 1] FIG. 1 is a plan view showing the general configuration of a dwelling unit in which an air conditioning system according to a first embodiment is installed. [Figure 2] Schematic cross-section of an air conditioning system in energy-saving heating mode [Figure 3] Schematic cross-section of an air conditioning system in heating comfort mode [Figure 4] Schematic cross-sectional view of an air conditioning system in energy-saving cooling mode [Figure 5] Schematic cross-section of an air conditioning system in cooling comfort mode [Figure 6] 10 is a schematic cross-sectional view of an air conditioning system according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0028] Several embodiments of the present invention will be described in detail below with reference to the drawings. In the following embodiments, an example will be described in which an air conditioning system 3 is installed in a dwelling unit 2 of a building 1 for an apartment building. Note that the building 1 may be an office building, and the air conditioning system 3 may be installed in a section of the office building.

[0029] First Embodiment As shown in Figure 1, the interior of the dwelling unit 2 is divided by walls 6, a ceiling 7 (see Figure 2), and a floor 8 (see Figure 2). A partition wall 9 is provided inside the interior to separate the interior. A ventilation device 10 for ventilation and an air conditioning system 3 are also provided inside the interior.

[0030] The wall 6 includes an exterior wall and a partition wall, and the exterior wall is provided with an entrance door 11, a plurality of windows 12, an air intake opening 13 for taking outdoor air indoors, an exhaust opening 14 for discharging indoor air outdoors, and a balcony 15.

[0031] The interior includes a living room (air-conditioned room) 21, a first Western-style room (heat recycling room) 22A, a second Western-style room (heat recycling room) 22B, a kitchen 24, a dressing room 25, a bathroom 26, a toilet 27, a hallway 28, a closet 29, a corridor 30, and a door 31. The living room 21, the first Western-style room 22A, and the second Western-style room 22B are living rooms. The living room 21 is equipped with an air conditioning unit 32 that supplies conditioned air whose temperature has been adjusted by heating or cooling. The first Western-style room 22A and the second Western-style room 22B may also be equipped with air conditioning units. Doors 31 are installed between the living room 21 and the toilet 27. The doors 31 are of a typical configuration with an undercut at the bottom for ventilation. The door 31 has a door frame (not shown) and a door body (not shown) supported by the door frame. The undercut of the door 31 is a notch provided in the lower edge of the door body. The door 31 may have an opening for ventilation. The undercut is one example of an opening (ventilation hole) in the door 31, and instead of the undercut, an uppercut consisting of a notch provided in the upper edge of the door body may be provided in the upper part of the door 31. Also, the door 31 may have a door louver instead of the undercut.

[0032] Ventilation device 10 takes in indoor air from laundry / dressing room 25, bathroom 26, and toilet 27 and exhausts the taken-in air outdoors through exhaust opening 14. Ventilation device 10 has exhaust inlets 35 provided in the ceilings 7 of each of laundry / dressing room 25, bathroom 26, and toilet 27, exhaust passages 36 connecting each of exhaust inlets 35 with exhaust opening 14, and a ventilation fan 37 that sends the indoor air taken in through exhaust inlets 35 to exhaust opening 14. Ventilation fan 37 is provided in exhaust passage 36. Indoor air is taken in through exhaust inlets 35, passes through exhaust passage 36, and is exhausted outdoors through exhaust opening 14.

[0033] Air supply openings 13 are provided on the walls of living room 21, first Western-style room 22A, and second Western-style room 22B. When indoor air is exhausted to the outdoors through exhaust openings 14 by ventilation fan 37 of ventilation device 10, the indoor air pressure drops. As a result, outdoor air flows into the indoors through air supply openings 13. In this way, the ventilation method for dwelling unit 2 is Type 3 ventilation, in which air is supplied by natural ventilation and air is exhausted by mechanical ventilation. The ventilation method for dwelling unit 2 may also be Type 1 ventilation, in which air is supplied and exhausted by mechanical ventilation. Furthermore, in the case of a dwelling unit 2 using Type 1 ventilation, ventilation device 10 may be a total heat exchange type ventilation device including a total heat exchanger.

[0034] The air conditioning system 3 includes an air passage 41 communicating with the living room (air-conditioned room) 21, the first Western-style room (heat reuse room) 22A, and the second Western-style room (heat reuse room) 22B, a blower 42, an intake port switching device 43 (see Figure 2), and an exhaust switching valve (exhaust port switching device) 44.

[0035] The living room 21 is a type of air-conditioned room, which is a room equipped with an air conditioner 32. The first Western-style room 22A and the second Western-style room 22B are a type of heat reuse room, which is a room different from the living room (air-conditioned room) 21. The first Western-style room 22A and the second Western-style room 22B are collectively referred to as the heat reuse room 22.

[0036] As shown in FIGS. 2 to 5, the air passage 41 has an upper inlet 46 that opens to the top of the living room (air-conditioned room) 21, a lower inlet 47 that opens to the bottom of the living room (air-conditioned room) 21, and outlets 48 that open to the floor, wall, or ceiling 7 of each of the first Western-style room (heat reuse room) 22A and the second Western-style room (heat reuse room) 22B. Air from the living room (air-conditioned room) 21 flows into the air passage 41 from the upper inlet 46 or the lower inlet 47 and flows out from the outlet 48 of the first Western-style room 22A or the outlet 48 of the second Western-style room 22B (the outlet 48 of the heat reuse room 22). In the air passage 41, the living room 21 side is the upstream side, and the first Western-style room 22A and the second Western-style room 22B side are the downstream side.

[0037] 2, the air passage 41 has an upper air inlet passage 41A communicating with the upper air inlet 46, a lower air inlet passage 41B communicating with the lower air inlet 47, and an outlet passage 41C communicating with the outlet 48. One of the upper air inlet passage 41A and the lower air inlet passage 41B may be an opening. In this embodiment, the upper air inlet passage 41A is an opening.

[0038] The upstream end of the discharge port passage 41C is connected to the upper suction port passage 41A and the lower suction port passage 41B. As shown in Fig. 1, the downstream end of the discharge port passage 41C branches into a first discharge opening passage 41D that communicates with the discharge port 48 of the first Western-style room 22A and a second discharge opening passage 41E that communicates with the discharge port 48 of the second Western-style room 22B.

[0039] The blower 42 is provided in the discharge port passage 41C of the air blowing passage 41. The blower 42 is provided in the discharge port passage 41C at a location upstream of a point where the discharge port passage 41C branches into a first discharge opening passage 41D and a second discharge opening passage 41E.

[0040] Air inlet switching device 43 switches the inlet that allows air from living room (air-conditioned room) 21 to flow into air passage 41 between upper air inlet 46 and lower air inlet 47. As shown in FIG. 2 , air conditioning system 3 has, as air inlet switching device 43, a shutter (upper air inlet opening / closing device) 46S that opens and closes upper air inlet 46, and a shutter (lower air inlet opening / closing device) 47S that opens and closes lower air inlet 47. Using shutter 46S and shutter 47S, the user can switch the inlet that allows air from living room (air-conditioned room) 21 to flow into air passage 41 between upper air inlet 46 and lower air inlet 47.

[0041] As shown in Fig. 1, the discharge switching valve (discharge port switching device) 44 is provided at a point in the discharge port passage 41C where it branches into a first discharge opening passage 41D and a second discharge opening passage 41E. The discharge switching valve 44 is connected to the first discharge opening passage 41D and the second discharge opening passage 41E. The discharge switching valve 44 switches the outflow discharge port, through which air from the living room (air-conditioned room) 21 flows out of the air supply passage 41, between the discharge port 48 of the first room 22A and the discharge port 48 of the second room 22B, and the discharge port 48 of the first room 22A and the discharge port 48 of the second room 22B (between the discharge ports of multiple heat reuse chambers). The heat reuse chamber 22 is a chamber in which an outflow discharge port is located. The discharge switching valve 44 switches the outflow discharge port, so that the heat reuse chamber 22 becomes the first Western-style room 22A and the second Western-style room 22B, the heat reuse chamber 22 becomes the first Western-style room 22A, or the heat reuse chamber 22 becomes the second Western-style room 22B. A discharge switching valve control button (not shown) is connected to the discharge switching valve 44 to switch the outflow discharge port between the discharge port 48 of the first Western-style room 22A and the discharge port 48 of the second Western-style room 22B, and the discharge port 48 of the first Western-style room 22A and the discharge port 48 of the second Western-style room 22B. The discharge switching valve control button is located on the inner wall of the living room 21. The position of the discharge switching valve control button can be changed as needed. The discharge switching valve control button may also be located in the hallway 30.

[0042] The following describes the operation and effects of the air conditioning system 3 configured as described above, the air conditioning method using the air conditioning system 3, and the building 1 equipped with the air conditioning system 3. The heat recycling chamber 22 to which air from the living room 21 is sent is switched in advance by the discharge switching valve 44 to either the first Western-style room 22A and the second Western-style room 22B, or the first Western-style room 22A, or the second Western-style room 22B.

[0043] Indoor ventilation is performed as follows. The ventilation device 10 takes in indoor air through the exhaust inlet 35 and expels the taken-in air outdoors through the exhaust opening 14. When the ventilation device 10 takes in indoor air through the exhaust inlet 35, air from the living room 21, the first Western-style room 22A, and the second Western-style room 22B flows through the hallway 30 into the exhaust inlet 35. As a result, the air pressure in each of the living room 21, the first Western-style room 22A, and the second Western-style room 22B drops below the outside air pressure. Outdoor air then flows indoors through the air supply openings 13 provided in the walls of each of the living room 21, the first Western-style room 22A, and the second Western-style room 22B. The total amount of indoor air taken into the ventilation device 10 through the exhaust inlet 35 is referred to as the "normal ventilation volume." The Building Standards Act also stipulates a minimum ventilation volume (referred to as the "required ventilation volume") required for each occupant room in a building 1. The normal ventilation volume is set to be greater than or equal to the required ventilation volume. When the blower 42 does not send air from the living room 21 to the heat reuse chamber 22, the amount of supply air flowing into the living room 21 from the air supply opening 13 of the living room (air-conditioned room) 21 is referred to as the "normal air supply volume for the air-conditioned room." Note that the normal ventilation volume, required ventilation volume, and normal air supply volume for the air-conditioned room are air flow rates per unit time.

[0044] When the blower 42 sends air from the living room 21 to the heat reuse chamber 22, the air pressure in the living room 21 decreases and the air pressure in the heat reuse chamber 22 increases. As a result, the flow rate of air flowing from the living room 21 through the hallway 30 to the exhaust air inlet 35 decreases, and the flow rate of air flowing from the heat reuse chamber 22 through the hallway 30 to the exhaust air inlet 35 increases. Therefore, the more the blower 42 blows air from the living room 21 to the heat reuse chamber 22, the less the flow rate of air flowing from the living room 21 through the hallway 30 to the exhaust air inlet 35 decreases. As a result, the air pressure in the living room 21 does not change significantly between when the blower 42 is blowing air from the living room 21 to the heat reuse chamber 22 and when the blower 42 is not blowing air from the living room 21 to the heat reuse chamber 22.

[0045] Therefore, the amount of outdoor air flowing into living room 21 from air supply opening 13 provided in the wall surface of living room 21 does not change significantly between when air is being blown and when air supply is stopped (the amount of outdoor air flowing into living room 21 at this time is the normal air supply amount to the air-conditioned room). As a result, the energy used for air conditioning by air conditioner 32 of living room 21 does not change significantly between when air is being blown and when air supply is stopped. Therefore, by having blower 42 send air from living room (air-conditioned room) 21 to heat reuse chamber 22, air conditioning system 3 can use the heat contained in the exhaust air from living room (air-conditioned room) 21 to adjust the temperature of heat reuse chamber 22 while suppressing an increase in the energy used for air conditioning by air conditioner 32.

[0046] Furthermore, when the airflow rate of blower 42 is greater than the normal air supply rate for the air-conditioned room, air flows into living room 21 from hallway 30, preventing the air pressure in living room 21 from dropping significantly compared to when airflow is stopped. In this case, the energy used by air conditioner 32 for air conditioning increases to adjust the temperature of the air flowing into living room 21 from hallway 30. Even in this case, the increase in energy is for adjusting the temperature of the indoor air flowing into living room 21 from hallway 30, not for adjusting the temperature of air flowing in from outdoors. The temperature of the indoor air is adjusted more than that of the outdoor air. This prevents the increase in energy used by air conditioner 32 for air conditioning.

[0047] The air conditioning system 3 includes an air passage 41 communicating with the living room (air-conditioned room) 21, the first Western-style room 22A, and the second Western-style room 22B (at least one heat reuse chamber 22), a blower 42, an upper air inlet 46, a lower air inlet 47, an air inlet switching device 43 (see FIG. 2), and a discharge switching valve (discharge outlet switching device) 44. The blower 42 sends air from the living room (air-conditioned room) 21 to the heat reuse chamber 22, whereby the air conditioned by the air conditioner 32 is reused as conditioned air in the heat reuse chamber 22, thereby conditioning the heat reuse chamber 22. This allows the temperature of the heat reuse chamber 22 to be adjusted using less energy than when the air conditioner directly adjusts the temperature of the living room (air-conditioned room) 21 and the temperature of the heat reuse chamber 22. Furthermore, depending on whether the state of the heat reuse chamber 22 is to be adjusted to a temperature using less energy or to an active state of temperature adjustment of the heat reuse chamber 22, the inlet air inlet is switched between the upper air inlet 46 and the lower air inlet 47. This allows the temperature of the heat reuse chamber (first Western-style room 22A and second Western-style room 22B, first Western-style room 22A or second Western-style room 22B) 22 to be adjusted to a preferred temperature.

[0048] Furthermore, the air in the heat recycling chamber 22 flows through the hallway 30 into the exhaust inlets 35 provided in each of the laundry room 25, bathroom 26, and toilet 27. Therefore, the temperature in the hallway 30 and even the temperature in the entrance 28 approach the temperature in the living room 21. This makes it possible to prevent residents from experiencing heat shock symptoms due to the temperature difference between the living room 21 and the hallway 30, and the temperature difference between the living room 21 and the entrance 28.

[0049] The operating modes during heating when the air conditioner 32 supplies heated conditioned air to the living room 21 include a heating energy saving mode in which the temperature of the heat reuse chamber 22 is adjusted with less energy, and a heating comfort mode in which the temperature of the heat reuse chamber 22 is adjusted actively. The operating modes during cooling when the air conditioner 32 supplies cooled conditioned air to the living room 21 include a cooling energy saving mode in which the temperature of the heat reuse chamber 22 is adjusted with less energy, and a cooling comfort mode in which the temperature of the heat reuse chamber 22 is adjusted actively.

[0050] As shown in Figure 2, when a user selects the energy-saving mode during heating, the inlet switching device 43 switches the inlet to the lower inlet 47. That is, the user closes the shutter 46S (upper inlet opening / closing device) that opens and closes the upper inlet 46, and opens the shutter 47S (lower inlet opening / closing device) that opens and closes the lower inlet 47. This allows the temperature of the heat reuse chamber 22 to be adjusted using less energy.

[0051] Typically, the temperature of the upper part of the living room 21, where the upper air inlet 46 is located, is higher than the temperature of the lower part of the living room 21, where the lower air inlet 47 is located. In the heating energy-saving mode, air that is relatively cooler in the lower part of the living room 21 is sent from the lower air inlet 47 to the heat reuse chamber 22 via the air supply passage 41. This allows the temperature of the living room 21 to be regulated while also regulating the temperature of the heat reuse chamber 22 with less energy. In this case, it is recommended that the airflow rate of the blower 42 be set as high as possible while still being equal to or lower than the normal air supply rate of the air-conditioned room of the living room 21. As a result, the air conditioning system 3 can effectively utilize the heat contained in the exhaust air from the living room (air-conditioned room) 21 to regulate the temperature of the heat reuse chamber 22 without increasing the energy used by the air conditioner 32 for air conditioning.

[0052] As shown in Figure 3, when a user selects the heating comfort mode, the inlet switching device 43 switches the inlet to the upper inlet 46. That is, the user opens the shutter 46S that opens and closes the upper inlet 46 and closes the shutter 47S that opens and closes the lower inlet 47. This allows the temperature in the heat reuse chamber 22 to be actively regulated.

[0053] In the heating comfort mode, air at a relatively high temperature in the living room 21, located at the top of the living room 21, is sent from the upper air inlet 46 through the air passage 41 to the heat reuse chamber 22. This allows for active temperature control of the heat reuse chamber 22 while regulating the temperature of the living room 21. In this case, it is preferable to minimize the airflow volume of the blower 42 while still maintaining the airflow volume necessary to heat the heat reuse chamber 22. As a result, the air conditioning system 3 can effectively utilize the heat contained in the exhaust air from the living room (air-conditioned room) 21 to regulate the temperature of the heat reuse chamber 22 while suppressing an increase in the energy used for air conditioning by the air conditioner 32. As described above, by selecting the heating energy-saving mode or the heating comfort mode, the temperature of the heat reuse chamber 22 can be adjusted to an appropriate temperature during heating.

[0054] As shown in Figure 4, when a user selects the energy-saving cooling mode, the inlet switching device 43 switches the inlet to the upper inlet 46. That is, the user opens the shutter 46S that opens and closes the upper inlet 46 and closes the shutter 47S that opens and closes the lower inlet 47. This allows the temperature in the heat reuse chamber 22 to be adjusted using less energy.

[0055] In the cooling energy-saving mode, air that is relatively hot in the living room 21 and located at the top of the living room 21 is sent from the upper air inlet 46 through the air passage 41 to the heat reuse chamber 22. This allows the temperature of the living room 21 to be adjusted while also adjusting the temperature of the heat reuse chamber 22 with less energy. In this case, it is recommended that the air volume of the blower 42 be set as large as possible while still being equal to or less than the normal air supply volume of the air-conditioned room of the living room 21. As a result, the air conditioning system 3 can effectively use the heat contained in the exhaust air from the living room (air-conditioned room) 21 to adjust the temperature in the heat reuse chamber 22 without increasing the energy used by the air conditioner 32 for air conditioning.

[0056] Furthermore, in the cooling energy-saving mode, the energy used by the air conditioner 32 for air conditioning can be reduced. Specifically, the door 31 is a door with a typical configuration, with an undercut at the bottom. For ventilation, relatively low-temperature air from the living room (air-conditioned room) 21 flows out through the undercut of the door 31 of the living room 21 into the hallway 30. Then, relatively high-temperature air from the living room 21 is sent from the upper air inlet 46 to the heat reuse chamber 22 via the air passage 41. The more air (relatively low-temperature air from the living room 21) sent from the upper air inlet 46 to the heat reuse chamber 22, the less air (relatively low-temperature air from the living room 21) flows out through the undercut of the door 31 of the living room 21 into the hallway 30. Therefore, the relatively high-temperature air from the living room 21 is prevented from being sent from the living room 21 to the heat reuse chamber 22, and the relatively low-temperature air from the living room 21 is prevented from flowing out. This reduces the energy used by the air conditioner 32 for air conditioning.

[0057] As shown in Figure 5, when a user selects the cooling comfort mode, the inlet switching device 43 switches the inlet to the lower inlet 47. That is, the user closes the shutter 46S that opens and closes the upper inlet 46 and opens the shutter 47S that opens and closes the lower inlet 47. This puts the heat reuse chamber 22 into a state where the temperature is actively regulated.

[0058] In the cooling comfort mode, air at a relatively low temperature within the living room 21, located at the bottom of the living room 21, is sent from the lower air inlet 47 through the air passage 41 to the heat reuse chamber 22. This allows for active temperature control of the heat reuse chamber 22 while regulating the temperature of the living room 21. In this case, it is preferable to minimize the airflow volume of the blower 42 while still satisfying the airflow volume required to cool the heat reuse chamber 22. As a result, the air conditioning system 3 can effectively utilize the heat contained in the exhaust air from the living room (air-conditioned room) 21 to regulate the temperature of the heat reuse chamber 22 while suppressing an increase in the energy used for air conditioning by the air conditioner 32. As described above, by selecting the cooling energy-saving mode or the cooling comfort mode, the temperatures of the living room 21 and the heat reuse chamber 22 can be appropriately adjusted during cooling.

[0059] The building 1 has a first Western-style room 22A and a second Western-style room 22B (plurality of heat reuse chambers 22), and the air conditioning system 3 is equipped with a discharge switching valve (discharge port switching device) 44. This makes it possible to adjust the air temperature of a desired heat reuse chamber 22 of the first Western-style room 22A and the second Western-style room 22B (plurality of heat reuse chambers 22) to a preferred temperature.

[0060] The air conditioning system 3 has, as the air inlet switching device 43, a shutter 46S (upper air inlet opening / closing device) that opens and closes the upper air inlet 46, and a shutter 47S (lower air inlet opening / closing device) that opens and closes the lower air inlet 47. This makes it possible to easily switch the inlet between the upper air inlet 46 and the lower air inlet 47.

[0061] Second Embodiment 6, the air conditioning system 3 of the second embodiment includes an intake switching valve (intake port switching device) 51 and a control device 52 in addition to the configuration of the air conditioning system 3 of the first embodiment, but does not include the shutter 46S (upper inlet opening and closing device) and shutter 47S (lower inlet opening and closing device) of the air conditioning system 3 of the first embodiment. Note that, among the components of the air conditioning system 3 of the second embodiment, components that are the same as or similar to those of the first embodiment are given the same reference numerals as those of the first embodiment, and detailed description of the components will be omitted.

[0062] The intake switching valve 51 is connected to the upper intake port passage 41A, which communicates with the upper intake port 46, the lower intake port passage 41B, which communicates with the lower intake port 47, and the discharge port passage 41C, which communicates with the discharge port 48. The intake switching valve 51 switches the inlet intake port, which allows air from the living room (air-conditioned room) 21 to flow into the air supply passage 41, between the upper intake port 46 and the lower intake port 47. The intake switching valve 51 is a type of intake port switching device 43. Simply by operating the intake switching valve 51, the inlet intake port can be switched between the upper intake port 46 and the lower intake port 47. This makes it easy to switch the inlet intake port between the upper intake port 46 and the lower intake port 47.

[0063] The control device 52 controls the blower 42, the suction switching valve 51, and the discharge switching valve (discharge port switching device) 44. The control device 52 has an input device (not shown) that accepts inputs for controlling the blower 42, the suction switching valve (suction port switching device) 51, and the discharge switching valve 44. The input device has an airflow rate input button, an inlet / inlet port switching button, an outlet / discharge port switching button, and an operation mode selection button. The airflow rate input button accepts input of the airflow rate of the blower 42 (for example, input of five levels of airflow rate). When the airflow rate input button is pressed, the control device 52 sets the airflow rate of the blower 42 according to the airflow rate input to the airflow rate input button.

[0064] The inlet inlet switching button is a button for inputting an inlet inlet switching command to set the inlet to either the upper inlet 46 or the lower inlet 47. When the inlet inlet switching button is pressed, the control device 52 switches the inlet inlet between the upper inlet 46 and the lower inlet 47 using the inlet switching valve 51 in accordance with the inlet inlet switching command. The outlet outlet switching button is a button for inputting an outlet outlet switching command to set the outlet to either the outlet 48 of the first Western-style room 22A and the outlet 48 of the second Western-style room 22B, or the outlet 48 of the first Western-style room 22A and the outlet 48 of the second Western-style room 22B. When the outflow / discharge outlet switching button is pressed, the control device 52, in response to an outflow / discharge outlet switching command, uses the discharge switching valve 44 to switch the outflow / discharge outlet between the outlet 48 of the first Western-style room 22A and the outlet 48 of the second Western-style room 22B, and the outlet 48 of the first Western-style room 22A and the outlet 48 of the second Western-style room 22B.

[0065] The operation mode selection button is a button for inputting an operation mode setting command to select one of the operation modes (heating energy saving mode (see FIG. 2) and heating comfort mode (see FIG. 3) for heating, and cooling energy saving mode (see FIG. 4) and cooling comfort mode (see FIG. 5) for cooling). When the operation mode selection button is pressed, the control device 52 switches the inlet suction port between the upper suction port 46 and the lower suction port 47 using the suction switching valve 51 in accordance with the operation mode setting command. The control device 52 is connected to the air conditioner 32, and may obtain information on whether the air conditioner 32 is in heating or cooling mode, and set the operation mode using the obtained information.

[0066] The input device may be a touch panel that displays an airflow rate input button, an inlet / outlet switching button, an outlet / outlet switching button, and an operation mode selection button. The airflow rate input button, the inlet / outlet switching button, the outlet / outlet switching button, and the operation mode selection button may be mechanical switches.

[0067] When a user presses an operation mode selection button on an input device to input an operation mode, control device 52 switches the inlet air intake between upper air intake 46 and lower air intake 47 using suction switching valve 51, as in the first embodiment. That is, in the heating energy-saving mode (see FIG. 2) and the cooling comfort mode (see FIG. 5), control device 52 uses suction switching valve 51 to set the inlet air intake to lower air intake 47. On the other hand, in the heating comfort mode (see FIG. 3) and the cooling energy-saving mode (see FIG. 3), control device 52 uses suction switching valve 51 to set the inlet air intake to upper air intake 46.

[0068] The air conditioning system 3 includes a control device 52 that switches the inlet between the upper inlet 46 and the lower inlet 47 using an inlet switching valve (inlet switching device) 51. This makes it easy to switch the inlet between the upper inlet 46 and the lower inlet 47. Furthermore, the control device 52 controls the blower 42 and the discharge switching valve 44, making it easy to set the airflow rate of the blower 42 and to switch the outlet between the discharge port 48 of the first room 22A and the discharge port 48 of the second room 22B and the discharge port 48 of the first room 22A and the discharge port 48 of the second room 22B (between the discharge ports of multiple heat reuse chambers).

[0069] The present invention is not limited to the above-described embodiment. The specific configuration, arrangement, quantity, and materials of each component and part may be modified as appropriate without departing from the spirit and scope of the present invention. Furthermore, not all of the components shown in the above-described embodiment are required and may be selected as appropriate. The dwelling unit 2 may include rooms other than the living room 21, the first Western-style room 22A, and the second Western-style room 22B. In the above-described embodiment, the heat reuse chambers 22 are two, the first Western-style room 22A and the second Western-style room 22B, but the number of heat reuse chambers 22 may be changed. The exhaust outlet 48 may be provided in the dressing room 25, the bathroom 26, the toilet 27, the entrance 28, or the hallway 30. The exhaust inlet 35 may also be provided in the entrance 28. [Explanation of symbols]

[0070] 1: Building 2: Dwelling unit 3: Air conditioning system 21: Living room (air-conditioned room) 22:Heat reuse room 22A: First Western-style room (heat reuse room) 22B: 2nd Western-style room (heat reuse room) 32: Air conditioning equipment 41: Ventilation passage 41A: Upper suction port passage 41B: Lower intake passage 41C:Discharge port passage 42: Blower 43: Inlet switching device 44: Discharge switching valve (discharge port switching device) 46: Upper suction port 46S: Shutter (upper suction port opening / closing device, suction port switching device) 47: Lower intake port 47S: Shutter (lower suction port opening / closing device, suction port switching device) 48:Discharge port 51: Intake switching valve (suction port switching device) 52: Control device

Claims

1. An air conditioning method using an air conditioning system installed in a building, The air conditioning system includes: an air passage that communicates with an air-conditioning chamber, which is a room equipped with an air conditioning device that supplies conditioned air whose temperature has been adjusted by heating or cooling, and at least one heat reuse chamber, which is a room different from the air-conditioning chamber, and has an upper air inlet opening at an upper part of the air-conditioning chamber, a lower air inlet opening at a lower part of the air-conditioning chamber, and a discharge port opening at the heat reuse chamber; a blower provided in the air passage and configured to send air from the air-conditioning chamber to the heat reuse chamber; an air inlet switching device that switches an inlet port through which air from the air-conditioning chamber flows into the air passage between the upper air inlet port and the lower air inlet port, The air conditioning method switches the inlet between the upper inlet and the lower inlet depending on whether the heat reuse chamber is to be in a state where the temperature is adjusted with less energy or in a state where the temperature is adjusted actively.

2. As operation modes during heating in which the conditioned air heated by the air conditioner is supplied to the air-conditioned room, there are an energy-saving mode during heating in which the temperature of the heat reuse room is adjusted with less energy, and a comfortable mode during heating in which the temperature of the heat reuse room is adjusted actively, When the heating energy saving mode is selected, the inlet switching device switches the inlet to the lower inlet; The air conditioning method according to claim 1 , wherein when the heating comfort mode is selected, the inlet switching device switches the inlet to the upper inlet.

3. As an operation mode during cooling in which the air conditioning system supplies the conditioned air cooled by the air conditioner, There is an energy saving mode during cooling in which the temperature of the heat reuse chamber is adjusted with less energy, and a comfortable mode during cooling in which the temperature of the heat reuse chamber is adjusted actively, When the cooling energy saving mode is selected, the air inlet switching device switches the inlet to the upper air inlet; The air conditioning method according to claim 1 , wherein when the cooling comfort mode is selected, the inlet switching device switches the inlet to the lower inlet.

4. The air conditioning system includes: Further provided is a control device for controlling the suction port switching device, 2. The air conditioning method according to claim 1, wherein the control device switches the inlet between the upper inlet and the lower inlet depending on whether the heat reuse chamber is to be in a state in which the temperature is adjusted with less energy or in a state in which the temperature is adjusted actively.

5. 1. A building air conditioning system, comprising: an air passage that communicates with an air-conditioning chamber, which is a room equipped with an air conditioning device that supplies conditioned air whose temperature has been adjusted by heating or cooling, and at least one heat reuse chamber, which is a room different from the air-conditioning chamber, and has an upper air inlet opening at an upper part of the air-conditioning chamber, a lower air inlet opening at a lower part of the air-conditioning chamber, and a discharge port opening at the heat reuse chamber; a blower provided in the air passage and configured to send air from the air-conditioning chamber to the heat reuse chamber; an air intake switching device that switches an inlet intake, through which air from the air-conditioning room flows into the air passage, between the upper air intake and the lower air intake.

6. The air conditioning system according to claim 5 , further comprising a control device that controls the air inlet switching device.

7. the building has a plurality of the heat recycling rooms; The air conditioning system includes: The air conditioning system according to claim 5 , further comprising an outlet switching device that switches an outlet outlet, through which the air in the air-conditioning chamber is discharged from the air passage, between the outlets of the plurality of heat reuse chambers.

8. The air conditioning system according to claim 5, wherein the air inlet switching device includes an upper air inlet opening / closing device that opens and closes the upper air inlet, and a lower air inlet opening / closing device that opens and closes the lower air inlet.

9. the air passage includes an upper suction port passage communicating with the upper suction port, a lower suction port passage communicating with the lower suction port, and a discharge port passage communicating with the discharge port, The air conditioning system according to claim 5 , wherein the suction port switching device includes an suction switching valve connected to the upper suction port passage, the lower suction port passage, and the discharge port passage.

10. A building equipped with an air conditioning system, The air conditioning system includes: an air passage that communicates with an air-conditioning chamber, which is a room equipped with an air conditioning device that supplies conditioned air whose temperature has been adjusted by heating or cooling, and at least one heat reuse chamber, which is a room different from the air-conditioning chamber, and has an upper air inlet opening at an upper part of the air-conditioning chamber, a lower air inlet opening at a lower part of the air-conditioning chamber, and a discharge port opening at the heat reuse chamber; a blower provided in the air passage and configured to send air from the air-conditioning chamber to the heat reuse chamber; a suction port switching device that switches the inlet suction port, which allows air from the air-conditioning room to flow into the air passage, between the upper suction port and the lower suction port.

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