Air Conditioning System

Abstract

To provide an air conditioning system that can improve a thermal environment and restrain a reduction in comfort of a user.SOLUTION: An air conditioning system is installed in a building comprising a first space, a second space, and a third space communicating with the first space and the second space, and comprises: an air conditioning device installed in the first space, and for heating or cooling the first space; an air supply device installed in the first space, and for making outdoor air flow into the first space; an air exhaust device installed in the second space, and for exhausting air in the second space to the outdoors; an air blowing device provided in an air passage connecting the first space and the third space, and for sending air in the first space to the third space; and a wind direction adjustment part for adjusting a discharge direction of air from a discharge port of the air passage. The wind direction adjustment part adjusts the discharge direction to a direction other than a directly downward direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to an air conditioning system that provides air conditioning and ventilation within a building. [Background technology]

[0002] Conventionally, in an air conditioning system that performs air conditioning and ventilation in a building such as a house, it is known that the thermal environment in the building is improved by sending air from an air-conditioned space where an air conditioner is installed to a non-air-conditioned space where no air conditioner is installed. For example, Patent Document 1 discloses an air conditioning system that uses a duct fan to send air from a living room, which is an air-conditioned space, to a dressing room, which is a non-air-conditioned space. The air conditioning system of Patent Document 1 is configured to efficiently heat multiple spaces by controlling the duct fan based on the heating capacity of the heating device and the need for heating in the non-air-conditioned space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-185743 A Summary of the Invention [Problem to be solved by the invention]

[0004] When blowing air from a living room to a changing room, as in the air conditioning system of Patent Document 1, if the air blows directly on a user in the changing room, the user's comfort is reduced due to a drafty feeling.

[0005] The present disclosure is devised to solve the above-mentioned problems, and aims to provide an air conditioning system that can improve the thermal environment and suppress a decrease in user comfort. [Means for solving the problem]

[0006] The air conditioning system according to the present disclosure is an air conditioning system installed in a building having a first space, a second space, and a third space communicating with the first space and the second space, and includes an air conditioner installed in the first space for heating or cooling the first space, an air supply device installed in the first space for introducing outside air into the first space, an exhaust device installed in the second space for discharging air from the second space to the outdoors, a blower provided in an air duct connecting the first space and the third space for sending air from the first space to the third space, and an air direction adjustment unit for adjusting the direction in which air is blown out from the outlet of the air duct. an air blowing control unit that controls an air blowing amount of the air blowing device so that the pressure in the third space is greater than the pressure in the first space when the air blowing device is operating; Equipped with The air duct outlet is located on the ceiling of the third space. The airflow direction adjustment unit adjusts the airflow direction to a direction other than directly below. Effect of the Invention

[0007] According to the air conditioning system of the present disclosure, the air direction adjustment unit can be used to change the air blowing direction from the air outlet of the air duct to a direction other than directly downward, thereby improving the thermal environment and preventing a decrease in user comfort. [Brief description of the drawings]

[0008] [Figure 1] 1 is a schematic configuration diagram of an air conditioning system according to a first embodiment. [Diagram 2] 2 is a schematic cross-sectional view of a building in which an air-conditioning system according to a first embodiment is installed, taken along line AA in FIG. [Diagram 3] 2 is a schematic cross-sectional view of a building in which an air-conditioning system according to a first embodiment is installed, taken along line BB in FIG. [Figure 4] FIG. 2 is a control block diagram of the air conditioning system according to the first embodiment. [Diagram 5] FIG. 11 is a diagram showing the air flow when the blower is stopped. [Figure 6] 4 is a flowchart showing a flow of pressure adjustment in the air conditioning system according to the first embodiment. [Figure 7] FIG. 4 is a diagram showing an air flow when pressure adjustment is being performed in the first embodiment. [Figure 8]FIG. 11 is a schematic configuration diagram of an air conditioning system according to a second embodiment. [Figure 9] FIG. 11 is a control block diagram of an air conditioning system according to a second embodiment. [Figure 10] FIG. 4 is a control block diagram of an air conditioning system according to a first modified example. [Figure 11] FIG. 11 is a schematic configuration diagram of an air conditioning system according to a second modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In each drawing, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will be omitted or simplified as appropriate. In addition, the shape, size, arrangement, etc. of the configurations shown in each drawing may be changed as appropriate within the scope of the present disclosure.

[0010] Embodiment 1 FIG. 1 is a schematic configuration diagram of an air conditioning system 100 according to a first embodiment. The air conditioning system 100 according to the first embodiment is installed in a building 200 such as a house. FIG. 1 shows a plan view of the building 200 and each configuration of the air conditioning system 100 installed in the building 200. FIG. 2 is a schematic cross-sectional view of the building 200 in which the air conditioning system 100 according to the first embodiment is installed, taken along line AA in FIG. 1. FIG. 3 is a schematic cross-sectional view of the building 200 in which the air conditioning system 100 according to the first embodiment is installed, taken along line BB in FIG. The configuration and arrangement of the air conditioning system 100 according to the present embodiment will be described with reference to FIGS. 1 to 3.

[0011] The air conditioning system 100 comprises an air conditioning unit 11 and an air supply unit 12 installed in a first space R1 of a building 200, an exhaust unit 21 installed in a second space R2, a blower unit 41 installed in an air duct 4 connecting the first space R1 and a third space R3, and a control unit 5.

[0012] The first space R1 is, for example, a living room. The first space R1 is adjacent to the third space R3, and a living room door 10 is provided between the first space R1 and the third space R3. As shown in FIG. 2, the air conditioner 11 is installed on the wall of the first space R1. The air conditioner 11 may be installed on the ceiling of the first space R1 or may be a floor-standing type. The air conditioner 11 includes a refrigerant circuit including a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger, and performs heating or cooling of the first space R1. The air conditioning capacity of the air conditioner 11 is controlled by a control unit (not shown) of the air conditioner 11 by changing the operating frequency of the compressor, the air volume of the outdoor fan that sends air to the outdoor heat exchanger, and the air volume of the indoor fan that supplies air to the outdoor heat exchanger.

[0013] 2, the air supply device 12 is provided on a wall of the first space R1. The air supply device 12 is an air supply port that allows outside air to flow into the first space R1. The air supply device 12 may also include an air supply fan for drawing the outside air into the first space R1.

[0014] The second space R2 is, for example, a changing room. The second space R2 is adjacent to the third space R3, and a changing room door 20 is provided between the second space R2 and the third space R3. As shown in FIG. 3, the exhaust device 21 is installed on the wall of the second space R2. The exhaust device 21 is an exhaust fan that exhausts air in the second space R2 to the outside. The exhaust air volume of the exhaust device 21 may be fixed or variable.

[0015] The third space R3 is, for example, an entrance. The third space R3 is adjacent to the first space R1 and the second space R2 and communicates with the first space R1 and the second space R2. The third space R3 is provided with an entrance door 30 that communicates with the outside.

[0016] As shown in Fig. 1 and Fig. 2, air passage 4 formed by a duct is provided in the ceiling of first space R1 and third space R3. An intake port 42 of air passage 4 is provided in the ceiling of first space R1, and an outlet port 43 of air passage 4 is provided in the ceiling of third space R3. Air blower 41 is installed in air passage 4 and transports air from first space R1 to third space R3. Air blower 41 is a blower fan equipped with an inverter, and the rotation speed is variably controlled to control the amount of air blown from first space R1 to third space R3.

[0017] As shown in FIG. 2, the air outlet 43 of the air passage 4 is provided with an airflow direction adjustment unit 430 that adjusts the direction (blowout direction) of air blown out from the air outlet 43. The airflow direction adjustment unit 430 is, for example, an air direction plate. In this embodiment, the airflow direction adjustment unit 430 adjusts the blowout direction so that the blowout direction is other than straight down (vertical direction). In other words, the airflow direction adjustment unit 430 adjusts the blowout direction so that the air from the air outlet 43 does not blow out straight down. This prevents the air blown out from the air outlet 43 from directly hitting the user in the third space R3, and can prevent the user from feeling uncomfortable due to a draft.

[0018] Moreover, the airflow direction adjustment unit 430 sets the blowing direction of the conditioned air from the first space R1 to a direction toward the inner wall of the building 200. In other words, the airflow direction adjustment unit 430 sets the blowing direction of the conditioned air from the first space R1 to a direction not toward the outer wall of the building 200. Here, the "inner wall" is a wall that does not face the outdoors, for example, a wall that separates the respective spaces, such as a wall that separates the first space R1 and the third space R3, or a wall that separates the second space R2 and the third space R3. Moreover, the "outer wall" is a wall that faces the outdoors, for example, a wall where the entrance door 30 is provided.

[0019] When the conditioned air from the first space R1 is blown toward the exterior wall, the heat of the conditioned air is absorbed by the exterior wall structure, which has a large heat capacity, and is dissipated to the outdoors through the exterior wall. This prevents the heat from being transferred to the air in the third space R3, reducing the efficiency of improving the thermal environment in the third space R3. In contrast, by blowing the conditioned air from the first space R1 toward the interior wall, even if the heat of the conditioned air is dissipated through the interior wall, the heat is dissipated into the space within the building 200, so the efficiency of improving the thermal environment is not reduced and no energy is wasted.

[0020] Airflow direction adjustment unit 430 may be fixed around air outlet 43, or may be provided so that its angle is variable. When the angle of airflow direction adjustment unit 430 is variable, the angle may be changed manually by a user, or the angle may be changed automatically by control device 5 using a drive unit such as a motor.

[0021] The arrangement of the first space R1, the second space R2, and the third space R3 in the building 200 is not limited to the example in Figures 1 to 3, and the arrangement may be arbitrary as long as each space communicates with each other. Here, "communicating" means that air can flow through gaps between the doors or through vents provided in the doors or walls not only when the living room door 10 and the dressing room door 20 are open, but also when the doors are closed.

[0022] The control device 5 is connected to the air conditioning device 11, the exhaust device 21, and the blower device 41 so as to be able to communicate wirelessly with them, and controls the operation of the blower device 41 based on the operation information of the air conditioning device 11 and the exhaust device 21. The control device 5 is, for example, an information and communication terminal such as a smartphone equipped with a CPU and a memory.

[0023] Fig. 4 is a control block diagram of the air conditioning system 100 according to the first embodiment. As shown in Fig. 4, the control device 5 has an information acquisition unit 51 and an air blow control unit 52. The information acquisition unit 51 and the air blow control unit 52 are functional units that are realized by the CPU of the control device 5 executing a program. Alternatively, at least one of the information acquisition unit 51 and the air blow control unit 52 may be realized by a processing circuit such as an ASIC or an FPGA.

[0024] The information acquisition unit 51 acquires operation information from the air conditioner 11 and the exhaust device 21. The operation information of the air conditioner 11 is information on the operation mode of the air conditioner 11, such as operation, stop, cooling or heating, and the operation state, such as continuous operation or intermittent operation. Continuous operation is a state in which the compressor of the air conditioner 11 operates continuously, and intermittent operation is a state in which the compressor is intermittently operated and stopped when the air conditioning load is low. Furthermore, the operation information of the exhaust device 21 is information on the operation, stop, and exhaust air volume during operation of the exhaust device 21. The information acquisition unit 51 periodically (for example, every few minutes) acquires operation information from the air conditioner 11 and the exhaust device 21 and outputs it to the air blowing control unit 52.

[0025] The air blowing control unit 52 controls the operation, stopping, and amount of air blown by the air blowing device 41 during operation, based on the operation information of the air conditioning device 11 and the exhaust device 21 acquired by the information acquisition unit 51. The air blowing control by the air blowing control unit 52 will be described below.

[0026] FIG. 5 is a diagram showing the air flow when the blower 41 is stopped. In FIG. 5, the air conditioner 11 and the exhaust device 21 are operating, and the air flow when the blower 41 is stopped is indicated by dotted lines and arrows. As shown in FIG. 5, first, outside air flows into the first space R1 through the air supply device 12, and the air in the first space R1 is heated or cooled by the air conditioner 11. The air in the first space R1 flows into the third space R3 through a gap or a vent in the living room door 10. Then, the air that has flowed into the third space R3 flows into the second space R2 through a gap or a vent in the undressing room door 20, and is discharged to the outdoors from the exhaust device 21.

[0027] Here, when the air conditioning device 11 and the exhaust device 21 are operating and the blower device 41 is stopped, the relationship between the pressure P1 in the first space R1, the pressure P2 in the second space R2, and the pressure P3 in the third space R3 is P1>P3>P2. The pressure P1 in the first space R1 into which outside air flows through the air supply device 12 is approximately the same as the atmospheric pressure, so the pressure P3 is lower than the atmospheric pressure. Therefore, outside air flows into the third space R3 through a gap in the entrance door 30 or a vent. As a result, the temperature of the third space R3 changes depending on the outside air temperature, and air hazardous substances such as pollen or PM2.5 enter the third space R3, reducing the comfort of users in the building 200.

[0028] Moreover, even when the blower 41 is operated, if the blowing volume of the blower 41 is equal to or less than the exhaust volume of the exhaust device 21, the relationship of the pressures P1 to P3 in the first space R1 to the third space R3 becomes P1>P3>P2, resulting in the air flow shown in Fig. 5. In this case as well, outside air flows into the third space R3 through a gap in the entrance door 30 or a vent, so that the effect of improving the thermal environment by blowing air from the first space R1 to the third space R3 is reduced, and the comfort of users in the building 200 is also reduced.

[0029] Therefore, the air conditioning system 100 includes an adjustment means for adjusting the pressure of each space so that the pressure P3 of the third space R3 is greater than the pressure P1 of the first space R1. In this embodiment, the air blowing control unit 52 functions as the adjustment means. The air blowing control unit 52 controls the rotation speed of the air blowing device 41 so that the air volume of the air blowing device 41 is greater than the exhaust air volume of the exhaust device 21. This makes it possible to make the pressure P3 of the third space R3 greater than the pressure P1 of the first space R1. More specifically, the relationship between the pressures P1 to P3 of the first space R1 to the third space R3 can be set to P3>P1>P2. This makes the pressure of the third space R3 greater than the atmospheric pressure, so that it is possible to suppress the inflow of outside air into the third space R3 through the gap or the vent of the entrance door 30.

[0030] Fig. 6 is a flowchart showing the flow of pressure adjustment in the air conditioning system 100 according to the first embodiment. In this embodiment, pressure adjustment is performed by controlling the air blowing of the air blowing device 41. The flow of Fig. 6 is executed by the control device 5. First, the information acquisition unit 51 of the control device 5 acquires operation information of the air conditioning device 11 and the exhaust device 21 (S1).

[0031] The air conditioner 11 starts operation when a user operates a remote controller (not shown) or the like. The air conditioner 11 performs cooling or heating operation so that the temperature of the first space R1 becomes the set temperature set by the user. The exhaust device 21 operates at a preset exhaust air volume, and exhausts the air in the second space R2 to the outdoors. Here, the exhaust air volume of the exhaust device 21 is set to an air volume that satisfies the ventilation rate of 0.5 times / h in the building 200, for example.

[0032] The airflow control unit 52 of the control device 5 judges whether or not the condition for starting airflow of the air blower 41 is satisfied based on the operation information acquired by the information acquisition unit 51 (S2). Here, the condition for starting airflow is that the air conditioning device 11 has a margin in its air conditioning capacity, in other words, that the air conditioning load in the first space R1 is small. This is because if the air conditioning device 11 has no margin in its air conditioning capacity and sends air to the third space R3, the first space R1 cannot be sufficiently heated or cooled, and the comfort of the users in the first space R1 will decrease. Specifically, the start condition is either the following condition (A) or condition (B). (A) A preset first time (e.g., 15 minutes) has elapsed since the air conditioning device 11 started operating. (B) The air conditioning unit 11 is operating intermittently.

[0033] If the start condition is not satisfied (S2: NO), the process waits until the start condition is satisfied. If the start condition is satisfied (S2: YES), the airflow control unit 52 operates the air blower 41 to start blowing air from the first space R1 to the third space R3 (S3). At this time, the airflow control unit 52 controls the rotation speed of the air blower 41 so that the airflow volume of the air blower 41 is greater than the exhaust airflow volume of the exhaust device 21. Here, the upper limit of the airflow volume of the air blower 41 is arbitrary, but it is desirable to set it to a level that does not increase the air conditioning load of the air conditioner 11 in the first space R1.

[0034] FIG. 7 is a diagram showing the air flow when pressure adjustment is performed in the first embodiment. That is, FIG. 7 shows the air flow in a state in which the air conditioner 11 and the exhaust device 21 are operating, and the blower device 41 is controlled so that the blowing volume of the blower device 41 is larger than the exhaust air volume of the exhaust device 21. As shown in FIG. 7, first, outside air flows into the first space R1 through the air supply device 12, and the air in the first space R1 is heated or cooled by the air conditioner 11. The air in the first space R1 is blown into the third space R3 through the air passage 4 by the blower device 41. Then, the air that has flowed into the third space R3 flows into the second space R2 through a gap or a vent in the dressing room door 20, and is discharged to the outdoors from the exhaust device 21.

[0035] Here, since the blowing volume of the blowing device 41 is larger than the exhaust volume of the exhaust device 21, the relationship between the pressure P1 in the first space R1, the pressure P2 in the second space R2, and the pressure P3 in the third space R3 is P3>P1>P2. This suppresses the inflow of outside air into the third space R3 through the gap or vent of the entrance door 30. As a result, the thermal environment of the third space R3 is improved by the blowing air from the first space R1, and the intrusion of harmful substances in the air into the third space R3 is suppressed, improving the comfort of the user. In addition, since the pressure P3 in the third space R3 is larger than the pressure P1 in the first space R1, the air in the third space R3 flows into the first space R1 through the gap or vent of the living room door 10 and circulates. This increases the area in which the conditioned air circulates in the building 200, improving the thermal environment in the entire building 200.

[0036] Returning to FIG. 6, the airflow control unit 52 judges whether or not the end condition is satisfied (S4). Here, the end condition for airflow is that the effect of airflow from the first space R1 to the third space R3 has decreased. Specifically, the end condition is that the air conditioning device 11 has stopped, or that a preset second time (e.g., 10 minutes) has elapsed since the air conditioning device 11 stopped. By continuing to blow air from the first space R1, where air conditioning was performed by the air conditioning device 11, for a certain period of time even after the air conditioning device 11 has stopped, the circulation of air within the building 200 can be continued and the thermal environment can be improved. If the end condition is not satisfied (S4: NO), airflow is continued until the end condition is satisfied. Then, if the end condition is satisfied (S4: YES), the airflow control unit 52 stops the air blower 41 (S5).

[0037] As described above, in the air conditioning system 100 of this embodiment, the air-conditioned air in the first space R1 is blown to the third space R3 by the blower 41 provided in the air passage 4, thereby improving the thermal environment of the building 200. In addition, by changing the blowing direction of the air-conditioned air from the first space R1 to a direction other than directly below by the air direction adjustment unit 430, the deterioration of the comfort of the user due to a draft feeling is suppressed. Furthermore, by making the blowing volume of the blower 41 during operation larger than the exhaust air volume of the exhaust device 21, the pressure P3 in the third space R3 can be made larger than the pressure P1 in the first space R1. This makes it possible to suppress the inflow of outside air and form a circulating airflow in the building 200. As a result, the deterioration of the improvement effect of the thermal environment in the building 200 is suppressed, and the comfort of the user can be improved.

[0038] Embodiment 2 An air conditioning system 100A according to the second embodiment will be described. The air conditioning system 100A according to the second embodiment differs from the first embodiment in that the air conditioning system 100A according to the second embodiment includes a pet detection device 31 that detects the presence or absence of a pet in the third space R3. The other configurations of the air conditioning system 100A and the air blowing control of the air blower 41 are the same as those of the first embodiment.

[0039] Fig. 8 is a schematic configuration diagram of an air conditioning system 100A according to embodiment 2. Like Fig. 1, Fig. 8 shows a plan view of a building 200 and each component of an air conditioning system 100A installed in the building 200. As shown in Fig. 8, the air conditioning system 100A of this embodiment includes a pet detection device 31 that detects the presence or absence of a pet in the third space R3.

[0040] The pet detection device 31 is provided on the ceiling or wall of the third space R3. The pet detection device 31 is, for example, a sensor that detects radio waves output from an IC tag for a pet, or a camera that captures an image of the pet. The detection result of the pet detection device 31 is transmitted to the control device 5A.

[0041] The airflow direction adjustment unit 430 of this embodiment is composed of an airflow direction plate and a motor that variably controls the angle of the airflow direction plate. The motor of the airflow direction adjustment unit 430 is controlled by the control device 5, so that the blowing direction of the conditioned air from the air outlet 43 is adjusted.

[0042] 9 is a control block diagram of an air conditioning system 100A according to the second embodiment. A control device 5A according to the present embodiment is connected to the air conditioning device 11, the blower 41, the exhaust device 21, the pet detection device 31, and the airflow direction adjustment unit 430 so as to be capable of wireless communication. The control device 5A performs the same airflow control as in the first embodiment, and also controls the airflow direction adjustment unit 430 based on the detection result of the pet detection device 31. The control device 5A is, for example, an information communication terminal such as a smartphone equipped with a CPU and a memory.

[0043] The control device 5A of this embodiment has an information acquisition unit 51, an airflow control unit 52, and an air direction control unit 53. The information acquisition unit 51, the airflow control unit 52, and the airflow direction control unit 53 are functional units realized by the CPU of the control device 5A executing a program. Alternatively, at least one of the information acquisition unit 51, the airflow control unit 52, and the airflow direction control unit 53 may be realized by a processing circuit such as an ASIC or an FPGA. The functions of the information acquisition unit 51 and the airflow control unit 52 in this embodiment are the same as those in the first embodiment.

[0044] The airflow direction control unit 53 controls the airflow direction adjustment unit 430 when the blower 41 is operating, based on the operation information of the air conditioner 11 and the detection result of the pet detection device 31. First, when the air conditioner 11 is performing heating operation, or when the pet detection device 31 detects that there is no pet in the third space R3, the airflow direction control unit 53 controls the airflow direction adjustment unit 430 so that the blowing direction of the conditioned air from the air outlet 43 is a direction other than directly below. On the other hand, when the air conditioner 11 is performing cooling operation and the pet detection device 31 detects that there is a pet in the third space R3, the airflow direction control unit 53 controls the airflow direction adjustment unit 430 so that the blowing direction of the conditioned air from the air outlet 43 is directly below. This allows cool air to be blown on the pet when there is a pet in the third space R3 in summer.

[0045] As described above, the air conditioning system 100A of the present embodiment has the same effects as the first embodiment, and can also provide a feeling of coolness to pets in the third space R3 in summer.

[0046] The above is a description of the embodiment, but the above embodiment can be modified and combined. For example, the blowing direction of the conditioned air from the air outlet 43 is not limited to the example of the above embodiment. For example, the airflow direction adjustment unit 430 may blow the conditioned air in a direction toward a window on the outer wall of the building 200. Since the window on the outer wall has high insulation performance and low heat capacity, even if the conditioned air is blown toward the window, the heat is not taken by the building structure and the heat can be transferred to the air in the third space R3. Therefore, in this case as well, the decrease in the efficiency of improving the thermal environment in the third space R3 can be suppressed.

[0047] The airflow direction adjustment unit 430 may blow out the conditioned air in a direction along the longitudinal direction of the ceiling surface of the third space R3. Alternatively, the airflow direction adjustment unit 430 may blow out the conditioned air in a diagonal direction with respect to the outer wall of the building 200. This promotes the diffusion of the conditioned air in the third space R3 and suppresses the occurrence of temperature unevenness in the third space R3. As a result, the thermal environment and the comfort of the user can be improved.

[0048] The configuration and affiliation of the control device 5 are not limited to the above embodiment. For example, the control device 5 may be a control device of the air conditioning device 11, or may be a control device built into the blower device 41. Each functional unit of the control device 5 may be realized by a different control device. In the above embodiment, the pressure P3 in the third space R3 is adjusted to be greater than the pressure P1 in the first space R1 by controlling the airflow rate of the blower device 41, but this is not limited to this. For example, the pressure P3 in the third space R3 may be made greater than the pressure P1 in the first space R1 by controlling the exhaust airflow rate of the exhaust device 21 arranged in the second space R2 to be smaller than the airflow rate of the blower device 41.

[0049] Moreover, the start and end conditions of air blowing by the air blowing device 41 are not limited to the examples of the above embodiment. Fig. 10 is a control block diagram of an air conditioning system 100B according to Modification 1. As shown in Fig. 10, a control device 5B of the air conditioning system 100B of Modification 1 is connected to an external device 6 via a network 300 such as the Internet so as to be able to communicate with the external device 6.

[0050] The information acquisition unit 51 of the control device 5B acquires information from the external device 6 via the network 300. The airflow control unit 52 uses the information acquired from the external device 6 as the start condition and end condition for airflow by the airflow device 41. For example, the external device 6 is an outdoor air temperature sensor that detects the outdoor air temperature, and the information acquisition unit 51 acquires the outdoor air temperature from the external device 6. The airflow control unit 52 adds the outdoor air temperature acquired from the external device 6 to the start condition. Specifically, when the air conditioning device 11 is performing cooling operation, the start condition is that either the above condition (A) or condition (B) is satisfied and the outdoor air temperature is equal to or higher than a first temperature (e.g., 30°C) set in advance. Also, when the air conditioning device 11 is performing heating operation, the start condition is that either the condition (A) or condition (B) is satisfied and the outdoor air temperature is equal to or lower than a second temperature (e.g., 10°C) set in advance.

[0051] Alternatively, the external device 6 may be a server that provides weather information, and the information acquisition unit 51 may acquire the weather information from the external device 6. In this case, the air blow control unit 52 adds information about the outside air temperature or weather contained in the weather information acquired from the external device 6 to the start conditions. The case where the outside air temperature is added to the start conditions is as described above. Specifically, when information about the weather is added to the start conditions, the start conditions are that either condition (A) or condition (B) is satisfied and the weather is fine when the air conditioning device 11 is performing cooling operation.

[0052] In this way, by adding environmental information such as the outside temperature or weather information as a condition for starting air blowing, air can be blown when air conditioning of the third space R3 is necessary, improving the thermal effect, while also suppressing unnecessary air blowing and reducing power consumption.

[0053] The airflow control unit 52 may also control the airflow rate of the air blower 41 using information acquired from the external device 6. For example, the external device 6 may be a sensor that detects the amount of harmful air substances, such as pollen, PM2.5, moisture, odor, and insects, contained in the outdoor air, or a server that provides information on harmful air substances. In this case, the information acquisition unit 51 acquires information on harmful air substances from the external device 6, and the airflow control unit 52 increases the airflow rate of the air blower 41 when the amount of air pollutants is equal to or greater than a threshold based on the information acquired by the information acquisition unit 51. This makes it possible to suppress the intrusion of harmful air substances from the outside, and improve the comfort of the user.

[0054] Furthermore, the airflow control unit 52 may add the status of the third space R3 to the conditions for ending airflow. For example, when the entrance door 30 is open, outside air flows into the third space R3, so even if air from the first space R1 is blown into the third space R3, the thermal effect is low and the air conditioning load of the air conditioner 11 increases. Therefore, the airflow control unit 52 may set the condition for ending airflow as follows: the entrance door 30 of the third space R3 is open for a preset third time (for example, 5 minutes).

[0055] Whether the front door 30 is open or not can be determined by detecting a change in the torque of the motor of the blower 41. Alternatively, whether the front door 30 is open or not may be detected by an opening / closing sensor provided on the front door 30, or a temperature sensor may be provided in the third space R3, and it may be determined that the front door 30 is open when the temperature in the third space R3 suddenly changes.

[0056] Furthermore, the air blowing control unit 52 may add the temperature of the air blown out from the outlet 43 of the third space R3 to the end condition of the air blowing. For example, when the air conditioner 11 is performing cooling operation, the end condition may be that the temperature of the air blown out from the outlet 43 is higher than the temperature of the third space R3. Also, when the air conditioner 11 is performing heating operation, the end condition may be that the temperature of the air blown out from the outlet 43 is lower than the temperature of the third space R3. This allows the air blower 41 to be stopped when an abnormality such as damage to the air passage 4 occurs, and unnecessary air blowing can be suppressed. As a result, an increase in the load on the air conditioner 11 can be suppressed, and power consumption can be reduced.

[0057] The airflow control unit 52 may also control the volume of airflow from the air blower 41 depending on the presence or absence of a person in the third space R3. In this case, a presence detection device that detects the presence or absence of a person in the third space R3 is provided in the third space R3. The presence detection device is, for example, a human sensor that detects a person using infrared rays. Alternatively, the presence detection device may be a sensor that detects the opening and closing of the front door 30, or the locking or unlocking of the front door 30. When the air blower 41 is operating and it is detected that a person is present in the third space R3, the airflow control unit 52 stops the air blower 41 or reduces the volume of airflow. After that, when a preset time has elapsed or when it is detected that a person has disappeared from the third space R3, the airflow control unit 52 resumes the operation of the air blower 41 and restores the volume of airflow. This makes it possible to suppress a decrease in the comfort of the user due to the air blown out from the air outlet 43.

[0058] Furthermore, on clear winter days, the air blowing control unit 52 may operate the air blowing device 41 during a predetermined time period in the daytime to blow air from the first space R1 to the third space R3, regardless of whether the air conditioning device 11 is operating. This makes it possible to prevent the room temperature in the first space R1 from rising too high, and improve the thermal environment throughout the building 200 without using air conditioning by the air conditioning device 11.

[0059] Furthermore, when the blower 41 is operating around sunset on a fine day, the blower control unit 52 may control the blower 41 to stop operation or reduce the amount of blowing air. On a fine day, the difference between the amount of solar power generation during the day and the amount of solar power generation after sunset becomes large, and the demand for electricity other than solar power generation increases sharply around sunset, which may disrupt the supply and demand balance. Therefore, by stopping the operation of the blower 41 around sunset on a fine day, the amount of power consumption can be reduced, which contributes to stabilizing the power supply.

[0060] Furthermore, the air conditioning system 100 can be applied to buildings other than the building 200 shown in Figures 1 to 3. Figure 11 is a schematic configuration diagram of an air conditioning system 100C according to Modification 2. Figure 11 is a schematic cross-sectional diagram of a building 200A corresponding to Figure 2. As shown in Figure 9, the first space R1 of the building 200A has an open-ceiling structure in which the first floor and second floor are continuous.

[0061] When the first space R1 has an open-ceiling structure, the air conditioner 11 and the air intake 42 of the air duct 4 are disposed within the living area of ​​the first space R1. The living area is located at a position lower than the ceiling height L1 of the first floor of the building 200A, and the height L1 is, for example, 3 m. This allows the air conditioner 11 to condition only the living area, rather than the entire first space R1. The air intake 42 can also draw in conditioned air within the living area and send it to the third space R3. This improves the thermal effect in the building 200A, reduces the processing load of the air conditioner 11, and reduces power consumption.

[0062] Further, in the air conditioning system 100 of the above embodiment, one exhaust device 21 is provided in the second space R2, but multiple exhaust devices 21 may be provided. The multiple exhaust devices 21 may be provided in one second space R2, or in multiple second spaces R2. In this case, the air blowing control unit 52 and the exhaust control unit 54 perform air blowing control and exhaust control using the sum of the exhaust air volumes of the multiple exhaust devices 21 as the exhaust air volume of the exhaust device 21. Specifically, the air blowing control unit 52 controls the blowing device 41 so that the blowing volume of the blowing device 41 is larger than the sum of the exhaust air volumes of the multiple exhaust devices 21. Furthermore, the exhaust control unit 54 controls the exhaust air volume of each exhaust device 21 so that the sum of the exhaust air volumes of the multiple exhaust devices 21 is smaller than the blowing volume of the blowing device 41.

[0063] In addition, in the above explanation, "outdoors" may include not only the outside of building 200, but also the outside of a space that is not air-conditioned, such as a parking lot within building 200.Furthermore, "outdoor air" may include not only the air outside building 200, but also the outside air that is a space that is not air-conditioned.

[0064] Various aspects of the present disclosure are summarized below as appendices.

[0065] (Appendix 1) An air conditioning system installed in a building having a first space, a second space, and a third space communicating with the first space and the second space, An air conditioning device installed in the first space for heating or cooling the first space; An air supply device installed in the first space for supplying outside air into the first space; an exhaust device installed in the second space and configured to exhaust air from the second space to the outside; a blower provided in an air passage connecting the first space and the third space and configured to blow air from the first space to the third space; and a wind direction adjustment unit that adjusts the direction in which air is blown out from the air outlet of the air passage, The airflow direction adjustment unit adjusts the airflow direction to a direction other than directly below. (Appendix 2) The air conditioning system according to claim 1, wherein the airflow direction adjustment unit adjusts the blowing direction toward an inner wall of the building. (Appendix 3) The air conditioning system according to claim 1, wherein the airflow direction adjustment unit adjusts the blowing direction toward a window of the building. (Appendix 4) The air conditioning system according to claim 1, wherein the airflow direction adjustment unit adjusts the blowing direction to be along a longitudinal direction of a ceiling of the third space. (Appendix 5) The air conditioning system according to claim 1, wherein the airflow direction adjustment unit sets the blowing direction diagonally relative to an outer wall of the building. (Appendix 6) A wind direction control unit that controls the wind direction adjustment unit; A pet detection device that detects the presence or absence of a pet in the third space, An air conditioning system as described in any one of Appendices 1 to 5, wherein the air direction control unit controls the air direction adjustment unit so that the air outlet direction is directly downward when the air conditioning device is performing the cooling function and the pet detection device detects the presence of a pet in the third space. (Appendix 7) The air conditioning system according to any one of claims 1 to 6, further comprising an air blowing control unit that controls the air blowing volume of the air blowing device so that the pressure in the third space is greater than the pressure in the first space when the air blowing device is operating. (Appendix 8) Further comprising an occupancy detection device that detects the presence or absence of a person in the third space, The air conditioning system of claim 7, wherein the air blowing control unit stops the air blowing device or reduces the air blowing volume when the air blowing device is operating and the presence detection device detects the presence of a person in the third space. (Appendix 9) An information acquisition unit that acquires information about harmful air substances contained in the outdoor air from an external device, The air conditioning system according to claim 7 or 8, wherein the air blowing control unit increases the air blowing volume of the air blowing device when the air blowing device is operating and the amount of the harmful air substances is equal to or greater than a threshold value. [Explanation of symbols]

[0066] 4 Air duct, 5, 5A, 5B Control device, 6 External equipment, 10 Room door, 11 Air conditioning device, 12 Air supply device, 20 Dressing room door, 21 Exhaust device, 30 Entrance door, 31 Pet detection device, 41 Air blower, 42 Intake port, 43 Outlet port, 51 Information acquisition unit, 52 Air blower control unit, 53 Air direction control unit, 100, 100A, 100B, 100C Air conditioning system, 200, 200A Building, 300 Network, 430 Air direction adjustment unit, R1 First space, R2 Second space, R3 Third space.

Claims

1. An air conditioning system installed in a building having a first space, a second space, and a third space communicating with the first space and the second space, An air conditioning device installed in the first space for heating or cooling the first space; an air supply device installed in the first space and configured to supply outside air into the first space; an exhaust device installed in the second space and configured to exhaust air from the second space to the outside; a blower provided in an air passage connecting the first space and the third space and configured to blow air from the first space to the third space; an airflow direction adjustment unit that adjusts the direction in which air is blown out from an outlet of the air passage; an air blowing control unit that controls an air blowing amount of the air blowing device so that the pressure in the third space is greater than the pressure in the first space when the air blowing device is operating, The outlet of the air passage is provided on a ceiling of the third space, The airflow direction adjustment unit adjusts the airflow direction to a direction other than directly below.

2. The air conditioning system according to claim 1 , wherein the airflow direction adjustment unit adjusts the airflow direction to a direction toward an inner wall of the building.

3. The air conditioning system according to claim 1 , wherein the airflow direction adjustment unit adjusts the airflow direction to a direction toward a window of the building.

4. The air conditioning system according to claim 1 , wherein the airflow direction adjustment unit adjusts the airflow direction to be blown out along a longitudinal direction of a ceiling of the third space.

5. The air conditioning system according to claim 1 , wherein the airflow direction adjustment unit adjusts the airflow direction to a diagonal direction with respect to an exterior wall of the building.

6. A wind direction control unit that controls the wind direction adjustment unit; A pet detection device that detects the presence or absence of a pet in the third space, The air conditioning system of claim 1, wherein the air direction control unit controls the air direction adjustment unit so that the air blowing direction is directly downward when the air conditioning device is performing the cooling function and the pet detection device detects the presence of a pet in the third space.

7. Further comprising an occupancy detection device that detects the presence or absence of a person in the third space, The air conditioning system according to any one of claims 1 to 6, wherein the air blowing control unit stops the air blowing device or reduces the air blowing volume when the air blowing device is operating and the presence detection device detects the presence of a person in the third space.

8. An information acquisition unit that acquires information about harmful air substances contained in the outdoor air from an external device, The air conditioning system according to any one of claims 1 to 6, wherein the air blowing control unit increases the air blowing volume of the air blowing device when the air blowing device is operating and the amount of the air hazardous substances is equal to or greater than a threshold value.

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