JP7653878B2 - Central air conditioning system, apartment complex - Google Patents

Description

This disclosure relates to air conditioning technology, and in particular to central air conditioning systems that control the air conditioning of multiple rooms, and to apartment buildings.

In air conditioners (hereafter referred to as "air conditioners") that blow air down from near the ceiling, the hot air rises up before it reaches the floor during heating operation. This causes an excessive temperature difference between the top and bottom, resulting in an uncomfortable environment with cold feet and hot heads. In order to reduce the temperature difference between the top and bottom, the direction of the blown air is changed horizontally by a specified amount when the thermostat is turned off, and a relatively low-temperature air current is blown over the top of the warm air that has risen to the ceiling, circulating the warm air that has risen to the ceiling (see, for example, Patent Document 1).

JP 2000-104979 A

In a central air conditioning system, the air conditioning is controlled collectively for multiple rooms in a house. In such a central air conditioning system, an air outlet for discharging air-conditioned air is provided in each of the multiple rooms. When changing the direction of the air discharge, a motor for changing the discharge direction must be provided for each air outlet, and a configuration is also required to control the operation of these motors. To simplify the configuration and maintenance, it is preferable not to have a motor.

This disclosure has been made in light of these circumstances, and its purpose is to provide a technology that suppresses the temperature difference between above and below a room without the need for control to change the direction of air discharge.

In order to solve the above problems, a central air conditioning system according to one embodiment of the present disclosure is a central air conditioning system for conditioning multiple rooms, and includes an air conditioner that conditions air, a blower that can be controlled independently of the air conditioner and blows air conditioned by the air conditioner, an outlet that is installed on the side walls of the multiple rooms and discharges the air blown from the blower, a temperature sensor that detects the temperature of the rooms, and a control unit that executes control based on the room temperature detected by the temperature sensor and a set temperature. The outlet discharges air horizontally toward the floor of the room near the ceiling of the room, and the control unit has a heating mode in which the air conditioner is operated to discharge heated air, which is air at a temperature higher than the set temperature, from the air conditioner into the room, and a non-heating mode in which the air conditioner is stopped, in heating control. When the room temperature detected by the temperature sensor has not yet reached the set temperature, the system alternates between heating mode and non-heating mode, and the blower operates in both heating and non-heating modes to mix the air discharged in the heating mode with the air discharged in the non-heating mode to generate descending air.

In addition, any combination of the above components, and conversions of the expressions of this disclosure between methods, devices, systems, recording media, computer programs, etc., are also valid aspects of this disclosure.

According to the present disclosure, the temperature difference between the top and bottom of a room can be reduced without the need for control to change the direction of air discharge.

FIG. 1 is a diagram showing the configuration of a house according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing the configuration of the house in FIG. 1. 3(a) and (b) are diagrams showing the configuration of the central air-conditioning unit of FIG. FIG. 2 is a diagram showing a configuration of a system controller shown in FIG. 1 . 5(a) and 5(b) are diagrams showing an outline of the operation of the central air-conditioning unit 300 controlled by the system controller of FIG. 6(a) and (b) are diagrams showing an overview of temperature control by the system controller of FIG.

Before describing the specific embodiments of the present disclosure, an overview of the embodiments will be described. This embodiment relates to a central air conditioning system that is installed in a collective housing unit, such as an apartment building, where multiple homes are gathered, and performs central air conditioning for each home. In the central air conditioning system, air conditioned in a central air conditioning unit is discharged from an outlet provided in each room. In this embodiment, heating is used as an example of air conditioning. Since the outlet is generally provided near the ceiling of the room, a temperature difference occurs between the top and bottom of the room. It is desirable to change the discharge direction in order to reduce the temperature difference between the top and bottom, but the configuration and maintenance of the central air conditioning system are complicated by providing a motor in each outlet. Here, it is required to suppress the temperature difference between the top and bottom of the room while simplifying the configuration and maintenance of the central air conditioning system.

To deal with this, the central air conditioning unit in the central air conditioning system according to this embodiment includes an air conditioner and a blower. The air conditioner can execute a heating mode in which heated air (hereinafter referred to as "heated air") is output and a non-heating mode in which the output of heated air is stopped, and the blower blows air to discharge the air from the outlet into the room. A system controller that controls the central air conditioning unit operates the air conditioner while switching between the heating mode and the non-heating mode, and causes the blower to continue to blow air. As a result, heated air and air that is not heated air (hereinafter referred to as "blow air") are alternately discharged from the outlet. When heated air is discharged, the temperature near the ceiling of the room increases, but when the blow air is exhausted, the temperature near the ceiling decreases, generating a downward air current from the ceiling to the floor. The downward air current stirs the air in the room, suppressing the temperature difference between the top and bottom of the room.

The examples described below each show a preferred specific example of the present disclosure. Therefore, the numerical values, shapes, materials, components, the arrangement and connection of the components, as well as the steps and the order of the steps shown in the following examples are merely examples and are not intended to limit the present disclosure. Therefore, among the components in the following examples, those components that are not described in the independent claims that show the highest concept of the present disclosure are described as optional components. In addition, in each figure, the same reference numerals are used for substantially the same configuration, and duplicate descriptions are omitted or simplified.

Figure 1 shows the configuration of a house 500. The house 500 is a residence for one family in a collective housing complex such as an apartment building. Here, as an example, the upper side of Figure 1 is the north side, the lower side is the south side, the left side is the west side, and the right side is the east side. The house 500 includes the first living room 10a to the fifth living room 10e, which are collectively referred to as living rooms 10, a hallway 12, a corridor 14, an air-conditioned room 18, a toilet 20, and a bathroom 22. The first living room 10a, the fourth living room 10d, and the fifth living room 10e are Western-style rooms, the second living room 10b is a living room, and the third living room 10c is a kitchen. In addition, at least one of the hallway 12 and the hallway 14 may be referred to as a shared space 16.

The whole-house air conditioning system installed in the house 500 includes an outside air inlet 100, an outside air inlet duct 102, a heat exchanger device 104, an exhaust duct 106, an exhaust port 108, an air supply duct 110, a first transport fan 120a and a second transport fan 120b collectively referred to as a transport fan 120, a first transport duct 122a and a second transport duct 122b collectively referred to as a transport duct 122, a first branch chamber 124a and a second branch chamber 124b collectively referred to as a branch chamber 124, a first branch transport duct 126a to an eighth branch transport duct 126h collectively referred to as a branch transport duct 126, a first air outlet 128a to an eighth air outlet 128h collectively referred to as an air outlet 128, an exhaust space port 150, and an exhaust space duct 152. The outside air intake duct 102, the exhaust duct 106, the supply air duct 110, the transport duct 122, the branch transport duct 126, and the exhaust space duct 152 are pipes that transport air, that is, air paths. The central air conditioning system also includes a central air conditioning unit 300, a system controller 400, and a temperature sensor 402.

The outside air inlet 100 is installed on the south wall of the house 500. An outside air inlet duct 102 extending from the outside air inlet 100 toward the inside of the house 500 is connected to a heat exchanger device 104. The heat exchanger device 104 is placed, for example, in the ceiling of the bathroom 22. An exhaust duct 106 is also connected to the heat exchanger device 104, and the exhaust duct 106 extends toward the south wall of the house 500 and is connected to an exhaust port 108 installed on the south wall. An air supply duct 110 is also connected to the heat exchanger device 104.

The heat exchanger device 104 is also called a heat exchange type ventilation fan. The heat exchanger device 104 takes in outside air 200 from the outside air inlet 100 through the outside air inlet duct 102. The outside air 200 sucked in from the outside air inlet 100 corresponds to the supply air. The heat exchanger device 104 also takes in ventilation RA (return air) 202 from the ventilation port 114. The ventilation RA 202 is air that has flowed in from inside the house 500. The heat exchanger device 104 exchanges heat between them. As a result of the heat exchange, the heat exchanger device 104 exhausts exhaust air 204 from the exhaust port 108 through the exhaust duct 106. The heat exchanger device 104 also supplies the heat-exchanged supply air 208 to the central air conditioning unit 300 via the supply air duct 110.

The central air conditioning unit 300 is installed in the air-conditioned room 18. Supply air 208 flows into the central air conditioning unit 300 from the supply air duct 110, and circulating RA 206 flows into the central air conditioning unit 300 from inside the house 500. The circulating RA 206 is air that flows in from inside the house 500, similar to the ventilation RA 202. The central air conditioning unit 300 performs air conditioning on the air that is a mixture of the supply air and the circulating RA 206. For example, the central air conditioning unit 300 controls temperature, humidity, etc. The first transport fan 120a in the central air conditioning unit 300 is connected to the first transport duct 122a, and the second transport fan 120b is connected to the second transport duct 122b.

The first transport duct 122a extends to the first branch chamber 124a, where it branches from the first branch transport duct 126a to the fourth branch transport duct 126d. The first branch transport duct 126a is connected to the first air outlet 128a installed in the first living room 10a. The second branch transport duct 126b is connected to the second air outlet 128b installed in the second living room 10b, and the third branch transport duct 126c is connected to the third air outlet 128c installed in the second living room 10b. The fourth branch transport duct 126d is connected to the fourth air outlet 128d installed in the third living room 10c.

The second transport duct 122b extends to the second branch chamber 124b, where it branches into the fifth branch transport duct 126e and the eighth branch transport duct 126h. The fifth branch transport duct 126e is connected to the fifth air outlet 128e installed in the fourth living room 10d. The sixth branch transport duct 126f is connected to the sixth air outlet 128f installed in the fifth living room 10e, and the seventh branch transport duct 126g is connected to the seventh air outlet 128g installed in the fifth living room 10e. The eighth branch transport duct 126h is connected to the eighth air outlet 128h installed in the corridor 14.

The first transport fan 120a transports the conditioned air from the first room 10a to the third room 10c via the first transport duct 122a, the first branch chamber 124a, the first branch transport duct 126a to the fourth branch transport duct 126d, and the first outlet 128a to the fourth outlet 128d. The second transport fan 120b transports the conditioned air to the fourth room 10d, the fifth room 10e, and the corridor 14 via the second transport duct 122b, the second branch chamber 124b, the fifth branch transport duct 126e to the eighth branch transport duct 126h, and the fifth outlet 128e to the eighth outlet 128h.

Figure 2 is a cross-sectional view showing the configuration of the house 500. An outside air inlet 100 and an exhaust outlet 108 are installed on the south wall of the house 500. An outside air inlet duct 102, an exhaust duct 106, a heat exchanger device 104, and an air supply duct 110, which are connected to the outside air inlet 100 and the exhaust outlet 108, are arranged in the attic 40. An air supply port 140 is installed on the ceiling of the air-conditioning room 18, and the air supply duct 110 is connected to the air supply port 140. The air supply port 140 blows out the supply air 208 from the heat exchanger device 104 into the air-conditioning room 18 via the air supply duct 110.

A central air conditioning unit 300 is installed in the air conditioning room 18. The first transport duct 122a connected to the central air conditioning unit 300 extends from the air conditioning room 18 to the ceiling space 40. In the ceiling space 40, the first transport duct 122a, the first branch chamber 124a, and the third branch transport duct 126c are connected in sequence. The third branch transport duct 126c is connected to the third air outlet 128c. The third air outlet 128c is installed on the surface of the side wall 50 of the second living room 10b among the multiple living rooms 10. The third air outlet 128c is connected to the blower 306 via the branch transport duct 126 and the transport duct 122 arranged in the ceiling space 40 of the corridor 14 adjacent to the second living room 10b. The third air outlet 128c discharges the air blown from the blower 306 to the second living room 10b. In particular, the third air outlet 128c discharges air horizontally toward the floor surface 36 near the ceiling 34 of the second living room 10b. Near the ceiling 34 may mean closer to the ceiling 34 than the floor surface 36. The horizontal direction is not limited to a completely horizontal direction, but may include the direction of expansion within the range in which the air is diffused from the completely horizontal direction. The other transport ducts 122, branch chambers 124, branch transport ducts 126, and air outlets 128 are arranged in a similar manner.

In the second living room 10b, a door 30 is provided on the same surface of the side wall 50 as the third air outlet 128c. A vent 52 is provided below the door 30, and the second living room 10b and the corridor 14 are connected through the vent 52. When air is blown out from the third air outlet 128c, the air originally present in the second living room 10b passes through the vent 52 and circulates to the corridor 14. A portion of the circulating air flows into the air-conditioning room 18 as the circulating RA 206. In the air-conditioning room 18, the air that is a mixture of the circulating RA 206 and the supply air 208 is taken into the central air-conditioning unit 300. Another portion of the circulating air is taken into the heat exchanger device 104 from the ventilation port 114 as the ventilation RA 202. The same applies to the air blown out from the other air outlets 128.

Figures 3(a) and (b) show the configuration of the central air conditioning unit 300. Figure 3(a) is a cross-sectional view of the central air conditioning unit 300 from the side. The central air conditioning unit 300 includes an air conditioner 302, a HEPA (High Efficiency Particulate Air) filter 304, and a blower 306. The air conditioner 302, HEPA filter 304, and blower 306 are arranged in this order from the top of the central air conditioning unit 300. The blower 306 includes a first transport fan 120a and a second transport fan 120b.

The air conditioner 302 is an air conditioner that controls the air conditioning inside the central air conditioning unit 300. The air conditioner 302 heats the air that flows into the air-conditioned room 18, that is, the air that is a mixture of the circulating RA 206 and the supply air 208, so that the temperature of the air inside the central air conditioning unit 300 becomes the set temperature (hereinafter referred to as the "air conditioner set temperature"). The circulating RA 206 is air that is drawn in through the shared space 16. The air conditioner set temperature is set by the system controller 400. Figure 3 (b) shows the configuration of the air conditioner 302. The air conditioner 302 includes a heating section 310 and a blowing section 312. The heating section 310 heats the air. The blowing section 312 blows the air heated in the heating section 310 outside the air conditioner 302 and into the central air conditioning unit 300. Return to Figure 3 (a).

HEPA filter 304 is an air filter that removes dirt, dust, etc. from the air conditioned by air conditioner 302 and outputs purified air. Blower 306 transports the air conditioned by air conditioner 302 and purified by HEPA filter 304 to air outlet 128 via transport duct 122, branch chamber 124, and branch transport duct 126. Blower 306 can be controlled independently of air conditioner 302, and is set by system controller 400, for example. Return to Figure 1.

The temperature sensor 402 is installed in the second living room 10b and detects the temperature of the house 500, for example, the second living room 10b. The temperature sensor 402 has a communication function such as wireless communication, and transmits the detected temperature to the system controller 400.

The system controller 400 is a controller that controls the entire central air conditioning system. The system controller 400 is communicatively connected to the air conditioner 302, the blower 306, and the temperature sensor 402 via wireless communication. At least some of these may be communicatively connected via wired communication. The system controller 400 receives the temperature from the temperature sensor 402.

The system controller 400 also has an interface for receiving input of information necessary to construct a central air-conditioning system. For example, the system controller 400 receives the temperature to be set in the central air-conditioning system (hereinafter referred to as the "set temperature"). The system controller 400 executes control over the central air-conditioning unit 300 based on the received temperature and the set temperature. Details of the control by the system controller 400 will be described later. The system controller 400 transmits operational instructions for the air conditioner 302 to the air conditioner 302, and transmits operational instructions for the blower 306 to the blower 306.

The interface function in the system controller 400 may be provided in a communication device that is separate from the system controller 400 and that can communicate with the system controller 400. The communication device is, for example, a mobile phone, a smartphone, or a tablet terminal.

An exhaust space vent 150 is installed in the ceiling of the toilet 20, and an exhaust space duct 152 is connected to the exhaust space vent 150, which is connected to the heat exchanger device 104. With this connection, the air in the toilet 20 passes through the exhaust space vent 150 and the exhaust duct 106 and is exhausted outside the building through the exhaust vent 108.

Figure 4 shows the configuration of the system controller 400. The system controller 400 is connected to a temperature sensor 402, an operation unit 410, the air conditioner 302, and the blower 306, and includes a control unit 412 and a memory unit 414. The operation unit 410 is the interface described above, and receives the set temperature. The operation unit 410 outputs the set temperature to the system controller 400. When the temperature sensor 402 detects the temperature of the living room 10, it outputs the temperature of the living room 10 to the system controller 400.

The control unit 412 executes control, particularly heating control, of the air conditioner 302 and blower 306 of the central air conditioning unit 300 based on the temperature of the room 10 and the set temperature. In heating control, a heating mode and a non-heating mode are defined as the operating modes of the air conditioner 302. The heating mode is a control mode during heating in which the air conditioner 302 is operated to discharge air at a temperature higher than the set temperature (hereinafter also referred to as "heated air") from the air conditioner 302 into the room 10. On the other hand, the non-heating mode is a control mode during heating in which the air conditioner 302 is stopped.

The control unit 412 determines whether the temperature of the living room 10 has not yet reached the set temperature based on the temperature of the living room 10 and the set temperature. The state in which the temperature of the living room 10 has not yet reached the set temperature is a state in which the temperature of the living room 10 has not converged to the set temperature even when heating is performed from a state in which the temperature of the living room 10 is lower than the set temperature. If the temperature of the living room 10 has not yet reached the set temperature, the control unit 412 executes heating control based on the table stored in the memory unit 414.

Figures 5(a)-(b) show an overview of the operation of the central air conditioning unit 300 by the system controller 400. Figure 5(a) shows an overview of a table stored in the storage unit 414. It is specified that the heating mode is executed from time T1 to time T2, the non-heating mode is executed from time T2 to time T3, and the heating mode is executed from time T3 to time T4. This means that the heating mode and the non-heating mode are alternately switched. Here, for clarity of explanation, it is assumed that one heating mode period and one non-heating mode period are equal. In addition, in the heating mode, the on state of the heating unit 310 and the on state of the blower unit 312 are specified, and in the non-heating mode, the off state of the heating unit 310 and the off state of the blower unit 312 are specified. In addition to these, it is also specified that the blower 306 is operated both when the heating mode is executed and when the non-heating mode is executed. Figure 5(b) will be described later, and we will return to Figure 4.

By referring to the table, the control unit 412 determines whether to alternate between the heating mode and the non-heating mode, and the timing for switching from the non-heating mode to the heating mode (hereinafter referred to as "on timing") and the timing for switching from the heating mode to the non-heating mode (hereinafter referred to as "off timing"). The control unit 412 also determines the on state of the heating unit 310 and the on state of the blower unit 312 in the heating mode, and determines the off state of the heating unit 310 and the off state of the blower unit 312 in the non-heating mode. Furthermore, the control unit 412 determines the operation of the blower 306 both when the heating mode is being executed and when the non-heating mode is being executed.

When the control unit 412 is on, it instructs the air conditioner 302 to turn on the heating unit 310 and the blower unit 312. When the control unit 412 is off, it instructs the air conditioner 302 to turn off the heating unit 310 and the blower unit 312. Furthermore, the control unit 412 keeps the blower 306 operating regardless of whether the heating mode or the non-heating mode is being executed.

Figure 5 (b) shows an overview of the operation of the central air conditioning unit 300 when the temperature in the room 10 has not yet reached the set temperature. At time T1, the room temperature 602 is lower than the set temperature 600. At that time, the air conditioner 302 operates in heating mode and the blower 306 blows air, so that the blowing temperature 604 of the air discharged from the air outlet 128 is higher than the set temperature 600. As described above, when the air conditioner 302 operates in heating mode, the heating section 310 is on and the blower section 312 is also on. This operation causes the room temperature 602 to rise over time.

At time T2, the air conditioner 302 switches from heating mode to non-heating mode and the blower 306 blows air, so that the outlet temperature 604 of the air discharged from the outlet 128 becomes lower than the set temperature 600. As described above, when the air conditioner 302 operates in non-heating mode, the heating unit 310 is off and the blower unit 312 is also off. Due to this operation, the room temperature 602 does not increase over time.

At time T3, the air conditioner 302 switches from non-heating mode to heating mode and the blower 306 starts blowing air, so that the outlet temperature 604 of the air discharged from the outlet 128 becomes higher than the set temperature 600. This operation causes the room temperature 602 to rise over time and approach the set temperature 600.

On the other hand, if the temperature of the room 10 has not yet reached the set temperature, the control unit 412 executes heating control of the central air conditioning unit 300 using known technology.

The subject of the device, system, or method of the present disclosure includes a computer. The computer executes a program to realize the function of the subject of the device, system, or method of the present disclosure. The computer includes a processor that operates according to the program as the main hardware configuration. The type of processor is not important as long as it can realize the function by executing the program. The processor is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or an LSI (Large Scale Integration). The multiple electronic circuits may be integrated into one chip or may be provided on multiple chips. The multiple chips may be integrated into one device or may be provided on multiple devices. The program is recorded on a non-transitory recording medium such as a computer-readable ROM, optical disk, or hard disk drive. The program may be stored in the recording medium in advance, or may be supplied to the recording medium via a wide area communication network including the Internet.

Figures 6(a)-(b) show an overview of temperature control by the system controller 400. Figure 6(a) shows a case where the central air conditioning unit 300 is operating in heating mode. The heated air 610 discharged from the third air outlet 128c to the second room 10b is, for example, 40°C. If the air in the second room 10b is classified into ceiling air 612, living room air 614, and floor air 616, the ceiling air 612 is 26°C, the living room air 614 is 22°C, and the floor air 616 is 17°C. The ceiling air 612 is the air closest to the ceiling 34, and the floor air 616 is the air closest to the floor 36. The living room air 614 is the air between the ceiling air 612 and the floor air 616.

Figure 6 (b) shows a case where the central air conditioning unit 300 is operating in non-heating mode. The blown air 620 discharged from the third air outlet 128c to the second room 10b is, for example, 26°C. Therefore, in the ceiling air 612, the heated air 610 discharged during heating mode execution is mixed with the blown air 620 discharged during non-heating mode execution, generating descending air 630 from the ceiling 34 to the floor 36 of the second room 10b. The descending air 630 causes thermal convection between the ceiling air 612, the room air 614, and the floor air 616. As a result, the ceiling air 612 becomes 23°C, the room air 614 becomes 23°C, and the floor air 616 becomes 21°C, and the upper and lower temperature difference becomes smaller than in the case of Figure 6 (a).

According to this embodiment, when the temperature of the living room 10 has not yet reached the set temperature 600, the heating mode and the non-heating mode are alternately switched and executed, and the blower 306 is operated both when the heating mode is executed and when the non-heating mode is executed, so that the descending air 630 can be generated in the living room 10. In addition, since the descending air 630 is generated in the living room 10, the temperature difference between the top and bottom of the living room 10 can be suppressed without control for changing the direction of the air discharge. In addition, when operating in the heating mode, the heating unit 310 is turned on and the blower 312 is turned on, and when operating in the non-heating mode, the heating unit 310 is turned off and the blower 312 is turned off, so that the temperature of the air discharged into the living room 10 can be changed in the heating mode and the non-heating mode. In addition, the air outlet 128 is connected to the blower 306 via a duct arranged in the attic 40, and the air conditioner 302 conditions the air taken in through the corridor 14, so that air can be circulated within the house 500. In addition, the shared space 16 includes at least one of the corridor 14 and the entrance 12, which improves the freedom of configuration.

An overview of one aspect of the present disclosure is as follows. A central air conditioning system of one aspect of the present disclosure is a central air conditioning system that conditions a plurality of rooms (10), and includes an air conditioner (302) that conditions air, a blower (306) that can be controlled independently of the air conditioner (302) and blows the air conditioned by the air conditioner (302), an outlet (128) that is installed on the side wall (50) surface of the plurality of rooms (10) and discharges the air blown from the blower (306), a temperature sensor (402) that detects the temperature of the room (10), and a control unit (412) that executes control based on the temperature of the room (10) detected by the temperature sensor (402) and a set temperature (600). The air outlet (128) discharges air horizontally to the floor surface (36) of the room (10) near the ceiling (34) of the room (10), and the control unit (412) has a heating mode in which the air conditioner (302) is operated to discharge heated air, which is air at a temperature higher than the set temperature (600), from the air conditioner (302) to the room (10) under control during heating, and a non-heating mode in which the air conditioner (302) is stopped. When the temperature of the room (10) detected by the temperature sensor (402) has not yet reached the set temperature (600), the heating mode and the non-heating mode are alternately switched and executed, and the blower (306) is operated both when the heating mode is executed and when the non-heating mode is executed, so that the air discharged when the heating mode is executed is mixed with the air discharged when the non-heating mode is executed to generate descending air.

The air conditioner (302) may include a heating section (310) that heats air and a blowing section (312) that blows air to the outside of the air conditioner (302). When operating in a heating mode with the temperature of the room (10) detected by the temperature sensor (402) not reaching the set temperature (600), the heating section (310) is turned on and the blowing section (312) is turned on, and when operating in a non-heating mode with the temperature of the room (10) detected by the temperature sensor (402) not reaching the set temperature (600), the heating section (310) is turned off and the blowing section (312) is turned off.

The air outlet (128) is connected to a blower (306) via a duct arranged in the ceiling (40) of a shared space (16) adjacent to the living room (10), and the living room (10) may be provided with a door (30) provided on the same side wall (50) surface as the air outlet (128), and an air vent (52) provided below the door (30) and connected to the shared space (16). The air conditioner (302) conditions the air drawn in through the shared space (16).

The shared space (16) may include at least one of a hallway (14) and a hallway (12).

The present disclosure has been described above based on examples. These examples are merely illustrative, and it will be understood by those skilled in the art that various modifications are possible in the combination of each of the components or each of the processing processes, and that such modifications are also within the scope of the present disclosure.

10 living room, 12 entrance, 14 corridor, 16 shared space, 18 air-conditioned room, 20 toilet, 22 bathroom, 30 door, 32 louver, 34 ceiling, 36 floor, 40 ceiling, 50 side wall, 52 vent, 100 outside air inlet, 102 outside air inlet duct, 104 heat exchanger device, 106 exhaust duct, 108 exhaust vent, 110 air supply duct, 114 ventilation vent, 120 transport fan, 122 transport duct, 124 branch chamber, 126 branch transport duct, 128 air outlet, 140 air supply vent, 150 exhaust space outlet, 152 exhaust space duct, 200 outside air, 202 Ventilation RA, 204 exhaust, 206 circulation RA, 208 supply air, 300 whole-house air conditioning unit, 302 air conditioner, 304 HEPA filter, 306 blower, 310 heating unit, 312 blower unit, 400 system controller, 402 temperature sensor, 410 operation unit, 412 control unit, 414 memory unit, 500 residence.

Claims (5)

A central air conditioning system for conditioning multiple rooms,
An air conditioner that conditions the air;
A blower that can be controlled independently of the air conditioner and blows air conditioned by the air conditioner;
an air outlet provided on a side wall surface of the plurality of rooms and configured to discharge air blown from the blower;
A temperature sensor that detects the temperature of the room;
a control unit that executes control based on the temperature of the room detected by the temperature sensor and a set temperature,
The air outlet discharges air horizontally toward a floor surface of the room near a ceiling of the room,
The control unit includes a heating mode in which the air conditioner is operated to discharge heated air having a temperature higher than the set temperature from the air conditioner into the room, and a non-heating mode in which the air conditioner is stopped, in a control during heating.
When the temperature of the room detected by the temperature sensor has not yet reached the set temperature, the heating mode and the non-heating mode are alternately switched and executed;
This whole-building air conditioning system operates the blower both when the heating mode is being executed and when the non-heating mode is being executed, thereby mixing the air discharged when the heating mode is being executed with the air discharged when the non-heating mode is being executed to generate descending air. The air conditioner is
A heating unit that heats air;
A blower unit that blows air to the outside of the air conditioner,
When the temperature in the living room detected by the temperature sensor has not yet reached the set temperature and the heating unit is turned on and the air blowing unit is turned on during operation in the heating mode,
The central air conditioning system according to claim 1 , wherein when the temperature of the room detected by the temperature sensor has not reached the set temperature and the system is operating in the non-heating mode, the heating unit is turned off and the blower unit is turned off. The air outlet is connected to the blower via a duct arranged in the ceiling of a common space adjacent to the living room,
The living room is:
A door provided on the same side wall surface as the air outlet;
A vent provided below the door and connected to the shared space,
The central air-conditioning system according to claim 1 or 2, wherein the air conditioner conditions air taken in through the shared space. The central air conditioning system of claim 3, wherein the shared space includes at least one of a hallway and an entrance hall. An apartment building equipped with a central air conditioning system according to any one of claims 1 to 4.

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