JP6929341B2 - Building air conditioning system and building air conditioning method - Google Patents

Description

The present invention relates to a building air conditioning system and a building air conditioning method.

The following Patent Document 1 proposes an air-conditioning system for air-conditioning a plurality of spaces in a building. This air conditioning system is a central air conditioning type that supplies air conditioned by at least one air conditioner to a plurality of spaces. The indoor unit of the air conditioner is arranged in the chamber, and the air discharged from the indoor unit into the chamber is supplied to the space through a fan.

Japanese Unexamined Patent Publication No. 2016-191483

For example, if the temperature of the air sucked by the indoor unit during the heating operation of the air conditioner is lower than the set temperature, it is not possible to supply an effective amount of heat to the living room or the like. Further, even during the cooling operation of the air conditioner, the same applies when the temperature of the air sucked by the indoor unit is higher than the set temperature.

However, conventional central air conditioning systems have not considered such issues.

The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a building air-conditioning system capable of efficiently air-conditioning a living room and a building air-conditioning method.

The present invention is an air-conditioning system for a building, in which one end is an air-conditioning chamber in which an indoor unit of an air conditioner is arranged, and a first flow path for supplying at least the air in the building to the air-conditioning chamber. A second flow path that communicates with the air-conditioning room and the other end communicates with the living room in the building, and a first flow path for supplying air from the air-conditioning room to the living room via the second flow path. The indoor unit includes a fan and a control device, the indoor unit has an indoor unit fan for sucking and discharging air in the air-conditioned room, and the control device has a predetermined setting. When the temperature of the suction air of the indoor unit is negative with respect to the temperature, the air volume of the first fan and / or the indoor unit fan is controlled so that the air stays in the air conditioning chamber.

In the air conditioning system according to the present invention, the set temperature may be a predetermined target temperature in the living room.

In the air-conditioning system according to the present invention, the set temperature may be an adjustment target temperature obtained by modifying a predetermined target temperature in the living room in consideration of heat loss in the second flow path.

In the air conditioning system according to the present invention, when the temperature of the suction air is negative with respect to the set temperature, the control device may reduce the air volume of both the first fan and the indoor unit fan.

The present invention is a method for air-conditioning a building, which includes an air-conditioning step of air-conditioning a living room in the building by using an air-conditioning system including an air conditioner. The air-conditioning room in which the indoor unit of the machine is arranged, the first flow path for supplying at least the air in the building to the air-conditioning room, one end communicating with the air-conditioning room, and the other end communicating with the living room. The indoor unit includes a second flow path and a first fan for supplying air from the air-conditioning chamber to the living room through the second flow path, and the indoor unit is used to air-condition the air in the air-conditioning room. It has an indoor unit fan for sucking and discharging, and in the air conditioning process, when the temperature of the sucked air of the indoor unit is negative with respect to a predetermined set temperature, air is introduced into the air conditioning room. It is characterized by including a step of controlling the air volume of the first fan and / or the indoor unit fan so as to stay.

In the building air-conditioning system and the building air-conditioning method of the present invention, when the temperature of the suction air of the indoor unit is negative with respect to a predetermined set temperature, the first fan and / / so that the air stays in the air-conditioning room. Alternatively, the living room can be efficiently air-conditioned by controlling the air volume of the indoor unit fan.

It is a conceptual diagram which shows an example of a building using the air-conditioning system of a building. It is an enlarged view of the air-conditioning chamber of FIG. It is a conceptual diagram which shows an example of the structure of a control device. It is a flowchart which shows an example of the processing procedure of the air-conditioning method of a building. It is a flowchart which shows an example of the processing procedure of an air-conditioning process. It is a conceptual diagram which shows an example of the state which the air stayed in the air-conditioning room.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that each drawing is for enhancing the understanding of the content of the invention, and in addition to including exaggerated display, it is pointed out in advance that the scales and the like do not exactly match between the drawings.

FIG. 1 is a conceptual diagram showing an example of a building 2 using an air conditioning system (hereinafter, may be simply referred to as “air conditioning system”) 1 of a building. As the building 2, the case where it is a house is exemplified, but it may be a building or the like. The building 2 of the present embodiment includes an underfloor space 3 and an above-floor space 4.

The underfloor space 3 is a space surrounded by the foundation, the ground, and the floor 5 on the first floor. The foundation is provided with an opening 6 for taking in the outside air A1. The outside air A1 taken in from the opening 6 exchanges heat with the underground heat having little temperature change throughout the year through the ground. As a result, the underfloor space 3 can store the air A2, which is relatively cool in the summer and relatively warm in the winter (hereinafter, may be simply referred to as “underfloor air”) as compared with the outside air A1.

The above-floor space 4 is a space provided above the underfloor space 3. The floor space 4 of the present embodiment includes a living room 7 and a non-living room 8. The living room 7 of the present embodiment includes the living rooms 7a and 7b on the first floor. The living room 7 may include a living room (not shown) provided on the second floor or higher. On the other hand, the non-living room 8 includes a hall 8a provided between the living rooms 7a and 7b on the first floor, a washroom (not shown), a toilet and the like. Further, the floor space 4 may be provided with, for example, an exhaust fan (not shown) for forcibly discharging at least a part of the air in the floor space 4 to the outside. As used herein, a "fan" is a machine for pumping air. Further, the discharge pressure of the fan is not particularly limited as long as it has a discharge pressure capable of pumping air.

The air-conditioning system 1 of the present embodiment is used for implementing a building air-conditioning method (hereinafter, may be simply referred to as “air-conditioning method”) described later. The air conditioning system 1 includes an air conditioning chamber 11, a first flow path 12, a second flow path 13, a first fan 14, and a control device 15. Further, the air conditioning system 1 of the present embodiment further includes a third flow path 16 and an intake air temperature detecting means 17. The third flow path 16 is used for ventilation of the building 2. Therefore, when another ventilation device (not shown) is provided in the building 2, the third flow path 16 may be omitted. Further, in addition to these configurations, the air conditioning system 1 may further include other configurations.

Although the air-conditioning chamber 11 of the present embodiment is installed on the floor 5, for example, it may be installed under the floor 5 or on the back of the cabin 18. Further, although the air conditioning room 11 is installed on the floor 5 on the first floor, it may be installed on the floor 5 on the upper floor 5 on the second floor or higher, for example. The air conditioning chamber 11 of the present embodiment is provided in the hall 8a. FIG. 2 is an enlarged view of the air conditioning chamber 11 of FIG.

The air-conditioning chamber 11 of the present embodiment is formed in a box shape having a space inside thereof. A heat insulating material (not shown) may be arranged on the wall surface 19 that partitions the space. Inside (space) of the air conditioning chamber 11, the indoor unit 21 of the air conditioner 20 is arranged.

As the air conditioner 20, a case where it is a general household separate type air conditioner is exemplified. The air conditioner 20 includes an indoor unit 21 and an outdoor unit (not shown) installed outside the building 2 as a set. The indoor unit 21 has a suction port 21a and a discharge port 21b.

Further, the indoor unit 21 has an indoor unit fan 21c for sucking and discharging the air in the air conditioning chamber 11 for air conditioning. By driving the indoor unit fan 21c, the air in the air conditioning chamber 11 is sucked from the suction port 21a. Next, the sucked air (hereinafter, may be simply referred to as “suctioned air”) A3 is heat-exchanged by a heat exchanger (not shown) provided inside the indoor unit 21. Then, the heat-exchanged air (hereinafter, may be simply referred to as “air-conditioned air”) A4 is discharged from the discharge port 21b.

The air conditioner 20 of the present embodiment is capable of heating operation and cooling operation, but may be capable of only one of them. In the heating operation, air (air-conditioned air) A4 having a temperature higher than that of the suction air A3 is discharged from the discharge port 21b. On the other hand, in the cooling operation, air (air-conditioned air) A4 having a temperature lower than that of the suction air A3 is discharged from the discharge port 21b.

The discharged conditioned air A4 may be purified by a filter (not shown) provided in the conditioned chamber 11. As a result, the air conditioning system 1 can supply the purified air conditioning air A4 to the living room 7 (shown in FIG. 1).

As shown in FIG. 1, the first flow path 12 is for supplying at least the air A5 in the building 2 to the air conditioning chamber 11. The first flow path 12 of the present embodiment includes a living room 7 in the building 2, a non-living room 8, a gap 23 provided in a door 22 or the like that separates them, and an air supply port 24 of the air conditioning room 11 (shown in FIG. 2). ) Is included. As shown in FIG. 2, the air supply port 24 of the present embodiment is provided on the suction port 21a side of the indoor unit 21 in the air conditioning chamber 11. With such a first flow path 12, as shown in FIG. 1, at least the air in the building (in this example, the air in the living room 7 and the non-living room 8) A5 becomes the living room 7, the non-living room 8, the gap 23, and the gap 23. It can be supplied to the air conditioning chamber 11 via the air supply port 24 (shown in FIG. 2).

The second flow path 13 is for supplying the air (including the air-conditioned air A4) A6 of the air-conditioned room 11 to the living room 7 during the air-conditioned operation. One end of the second flow path 13 communicates with the air conditioning chamber 11, and the other end communicates with the living room 7 (in this example, the living rooms 7a and 7b on the first floor) in the building 2. The second flow path 13 of the present embodiment is configured as a duct 25 connecting the air conditioning chamber 11 and the living rooms 7a and 7b on the first floor.

As shown in FIG. 2, one end side of the second flow path 13 of the present embodiment is connected to an opening provided on the discharge port 21b side of the indoor unit 21 in the air conditioning chamber 11. On the other hand, at the other end (shown in FIG. 1) of the second flow path 13, a damper (not shown) for adjusting the air volume to each living room 7 (in this example, the living rooms 7a and 7b on the first floor) is provided. It is desirable to be provided. With such a damper, the supply amount of the air A6 of the air conditioning room 11 including the air conditioning air A4 can be adjusted for each of the living rooms 7a and 7b on the first floor. Therefore, the air-conditioning system 1 of the present embodiment can individually air-condition the living rooms 7a and 7b on the first floor.

As shown in FIG. 1, the first fan 14 is for supplying the air of the air conditioning chamber 11 (including the air conditioning air A4 during the air conditioning operation) A6 to the living room 7 via the second flow path 13. Is. Although the first fan 14 of the present embodiment is provided inside the air conditioning chamber 11, it may be provided outside the air conditioning chamber 11. Further, in the present embodiment, the case where it is composed of one first fan 14 is illustrated, but it may be composed of a plurality of first fans 14. The first fan 14 of the present embodiment is connected to one end of the second flow path 13. By such a first fan 14, the air A6 of the air conditioning chamber 11 can be supplied (pumped) to the living room 7 via the second flow path 13.

The third flow path 16 is for supplying the underfloor air A2 (outside air A1) to the air conditioning chamber 11. As shown in FIGS. 1 and 2, the third flow path 16 of the present embodiment is composed of a duct 26 having one end communicating with the air conditioning chamber 11 and the other end communicating with the underfloor space 3. As shown in FIG. 2, one end of the third flow path 16 (duct 26) is provided in the air conditioning chamber 11 on the suction port 21a side of the indoor unit 21. On the other hand, on the other end side of the third flow path 16, an outside air supply fan 27 for sending the underfloor air A2 (outside air A1) to the air conditioning chamber 11 side is provided. Underfloor air A2 (outside air A1) can be supplied to the air conditioning chamber 11 by such a third flow path 16 and an outside air supply fan 27.

The intake air temperature detecting means 17 is for measuring the temperature of the suction air A3 of the indoor unit 21. The intake air temperature detecting means 17 of the present embodiment is configured as a temperature sensor attached in the vicinity of the suction port 21a of the indoor unit 21 in the air conditioning chamber 11. When the air conditioner 20 is provided with a temperature sensor (not shown) capable of measuring the temperature of the suction air A3, the temperature sensor may be used as the intake air temperature detecting means 17. Further, when the temperature of the air A5 in the building 2 is measured as the temperature of the suction air A3, the intake air temperature detecting means 17 may be attached to the hall 8a in which the air conditioning chamber 11 is installed.

As shown in FIG. 1, the control device 15 is for controlling the air conditioner 20, the first fan 14, and the like. The control device 15 of the present embodiment is installed on, for example, a partition wall or the like, but is not limited to such an embodiment. FIG. 3 is a conceptual diagram showing an example of the configuration of the control device 15.

The control device 15 includes a calculation unit 31 composed of a CPU (central processing unit), a storage unit 32 in which processing procedures are stored, and a working memory 33 for reading processing procedures and the like stored in the storage unit 32. It is configured to include.

An input means 34 is connected to the calculation unit 31. The input means 34 is composed of, for example, an operation button, a touch panel, or the like provided in the housing (shown in FIG. 1) of the control device 15. With such an input means 34, for example, information input by a resident or the like can be transmitted to the calculation unit 31.

The information to be input is, for example, predetermined information regarding the start and stop of the air conditioning operation (heating operation or cooling operation) and the living room 7 shown in FIG. 1 (in this example, the living rooms 7a and 7b on the first floor). The target temperature, etc., has been set. The target temperature is the temperature of the living room 7 that should be achieved and maintained by being air-conditioned by the air-conditioning method (air-conditioning system 1). Further, the target temperature of the present embodiment is set for each of the living rooms 7a and 7b on the first floor. This information is stored in the data unit 36 of the storage unit 32 shown in FIG.

An output means 35 is connected to the calculation unit 31. The output means 35 is configured as a display provided in the housing (shown in FIG. 1) of the control device 15. By transmitting a signal to the output means 35, the calculation unit 31 can display, for example, the operating status of the air conditioning system 1 on the output means 35.

The intake air temperature detecting means 17 is connected to the calculation unit 31. As a result, the calculation unit 31 transmits a signal to the intake air temperature detecting means 17 to cause the intake air temperature detecting means 17 to detect the temperature of the suction air A3 (shown in FIG. 2) of the indoor unit 21 and detect the temperature. The result can be transmitted to the calculation unit 31.

An air conditioner 20 is connected to the calculation unit 31. As a result, the calculation unit 31 can start and stop the air conditioning operation (heating operation or cooling operation) by transmitting a signal to the air conditioner 20. Further, the calculation unit 31 can control the air volume of the indoor unit fan 21c (shown in FIG. 2) by transmitting a signal to the air conditioner 20.

The first fan 14 and the outside air supply fan 27 are connected to the calculation unit 31. As a result, the calculation unit 31 can start and end the operation of the first fan 14 and the outside air supply fan 27 by transmitting a signal to the first fan 14 and the outside air supply fan 27. Further, the calculation unit 31 can control the air volume of the first fan 14 and the outside air supply fan 27 by transmitting signals to the first fan 14 and the outside air supply fan 27.

The storage unit 32 is, for example, a non-volatile information storage device. The storage unit 32 includes a data unit 36 and a program unit 37. The data unit 36 is for storing the information input by the above-mentioned resident or the like, the calculation result by the calculation unit 31, and the like. The program unit 37 is a program executed by the arithmetic unit 31.

The program unit 37 of the present embodiment includes a determination unit 41, an air conditioning operation start / stop unit 42, and an air volume adjusting unit 43. The program unit 37 may include other programs.

The determination unit 41 is for determining whether or not there is an instruction to start and stop the air conditioning operation, and whether or not there is an instruction to end the air conditioning control (air conditioning method) by the air conditioning system 1 described later. The air conditioning operation start / stop unit 42 is for starting and stopping the air conditioning operation by the air conditioner 20. The air volume adjusting unit 43 is for adjusting the air volume of the first fan 14 and the indoor unit fan 21c (shown in FIG. 2) according to the state of air conditioning operation.

Next, the processing procedure of the air conditioning method of the present embodiment will be described. FIG. 4 is a flowchart showing an example of the processing procedure of the air conditioning method of the building 2.

In the air conditioning method of the present embodiment, it is first determined whether or not there is an instruction to start the air conditioning operation by the air conditioner 20 (shown in FIGS. 1 and 2) (step S1). The process S1 is processed by the determination unit 41 included in the program unit 37 shown in FIG. 3 being read into the working memory 33 and executed by the calculation unit 31. Whether or not there is an instruction to start the air conditioning operation is determined based on, for example, the instruction information regarding the start of the air conditioning operation (heating operation or cooling operation) input by the resident or the like to the input means 34.

When it is determined in step S1 that there is an instruction to start air conditioning operation (“Y” in step S1), the next air conditioning step S2 is carried out. On the other hand, in step S1, when it is determined that there is no instruction to start the air conditioning operation (for example, there is an instruction to stop the air conditioning operation) (“N” in step S1), the instruction to end the air conditioning method by the air conditioning system 1 is given. Step S3 for determining whether or not there is is carried out.

Next, in the air-conditioning process S2 of the present embodiment, the living room 7 in the building 2 is air-conditioned by using the air-conditioning system 1 including the air conditioner 20 shown in FIGS. 1 and 2. FIG. 5 is a flowchart showing an example of the processing procedure of the air conditioning step S2.

In the air conditioning process S2 of the present embodiment, first, the air conditioning operation by the air conditioner 20 (shown in FIGS. 1 and 2) is started (step S21). The process S21 is processed by reading the air-conditioning operation start / stop unit 42 of the program unit 37 shown in FIG. 3 into the work memory 33 and executing the step S21 by the calculation unit 31.

In step S21, the calculation unit 31 transmits a signal for starting the cooling operation or the heating operation to the air conditioner 20 based on the instruction information regarding the start of the air conditioning (heating operation or the cooling operation). As a result, in step S21, the instructed operation (heating operation or cooling operation) is started by the air conditioner 20 shown in FIGS. 1 and 2. With the start of operation of the air conditioner 20, the operation of the indoor unit fan 21c (shown in FIG. 2) is also started. The set temperature of the air conditioner 20 is appropriately set based on, for example, a predetermined target temperature in the living room 7 (shown in FIG. 1). The air volume of the indoor unit fan 21c is appropriately set according to the operating condition of the air conditioner 20.

Further, in step S21, the calculation unit 31 shown in FIG. 3 transmits information for operating the first fan 14 and the outside air supply fan 27 at a predetermined air volume. As a result, in step S21, the first fan 14 and the outside air supply fan 27 can be operated based on a predetermined air volume. If the first fan 14 and the outside air supply fan 27 are stopped in step S21, these operations are started.

The air volume of the first fan 14 and the air volume of the outside air supply fan 27 are appropriately set. In step S21 of the present embodiment, the air volume of the first fan 14 is set to be equal to or higher than the air volume of the indoor unit fan 21c (shown in FIG. 2). In addition, in this specification, "the air volume of the 1st fan 14" is specified as the total air volume of those 1st fan 14 when it is composed of a plurality of 1st fan 14. As a result, as shown in FIG. 2, the air conditioning system 1 supplies the air A6 of the air conditioning chamber 11 including the air conditioning air A4 to the living room 7 (shown in FIG. 1) without staying, so that the living room 7 is provided. Can be effectively air-conditioned. On the other hand, it is desirable that the air volume of the outside air supply fan 27 is set based on, for example, the ventilation frequency required for the building 2.

As shown in FIGS. 1 and 2, in step S21, the air supplied from the first flow path 12 to the air conditioning chamber 11 (air A5 in the building 2) by the operation of the air conditioner 20 (indoor unit fan 21c). ) Is sucked into the indoor unit 21, and the conditioned air A4 can be discharged to the air conditioning chamber 11. Further, in the step S21, the air A6 of the air conditioning chamber 11 including the air conditioning air A4 can be supplied to the living room 7 via the second flow path 13 by the operation of the first fan 14. As a result, in step S21, the air conditioning (heating operation or cooling operation) of the living room 7 can be started while circulating the air A5 in the building 2, so that the comfort in the living room 7 can be enhanced.

Further, in the step S21 of the present embodiment, the mixture of the underfloor air A2 (outside air A1) supplied to the air conditioning chamber 11 and the air A5 in the building 2 is transferred to the indoor unit 21 by the operation of the outside air supply fan 27. The conditioned air A4 that has been sucked and exchanged heat is discharged to the conditioned chamber 11. Therefore, in step S21, the air A6 of the air conditioning chamber 11 including the air conditioning air A4 (outside air A1) is supplied to the living room 7 via the second flow path 13, so that the air A5 in the building 2 is circulated. , The living room 7 can be ventilated and air-conditioned.

As shown in FIG. 5, next, in the air conditioning step S2 of the present embodiment, it is determined whether or not the temperature of the suction air A3 is negative with respect to the preset set temperature (step S22). The process S22 is processed by the determination unit 41 included in the program unit 37 shown in FIG. 3 being read into the working memory 33 and executed by the calculation unit 31. The temperature of the suction air A3 (shown in FIG. 2) can be acquired by the calculation unit 31 transmitting a signal to the intake air temperature detecting means 17.

In the present specification, the negative means that the temperature of the suction air A3 (shown in FIG. 2) deviates in a direction disadvantageous to air conditioning with respect to a predetermined set temperature. For example, when the temperature of the suction air A3 is lower than the set temperature during the heating operation of the air conditioner 20, the temperature of the suction air A3 is disadvantageous for heating with respect to the set temperature. There is a divergence in the right direction. On the other hand, in the cooling operation, when the temperature of the suction air A3 is higher than the set temperature (that is, the temperature of the suction air> the set temperature), the temperature of the suction air A3 is in a disadvantageous direction for cooling with respect to the set temperature. It is divergent to. In these cases, in step S22 of the present embodiment, it is determined that the temperature of the suction air A3 is negative.

When the temperature of the suction air A3 (shown in FIG. 2) is negative, the suction air A3 is heat-exchanged by the air conditioner 20 until the air effective for air conditioning in the living room 7 (shown in FIG. 1) is discharged. It takes time, and the start-up property of air conditioning tends to decrease. In the heating operation, the air effective for air conditioning is air having a temperature higher than the set temperature. On the other hand, during the cooling operation, the air effective for air conditioning is air having a temperature lower than the set temperature.

The set temperature can be appropriately set as long as it can be determined whether or not the temperature of the suction air A3 (shown in FIG. 2) is negative. In the present embodiment, a predetermined target temperature in the living room 7 (shown in FIG. 1) is set as the set temperature. When the target temperature is set for each of the living rooms 7a and 7b on the first floor as in the present embodiment, the highest target temperature among those target temperatures is set as the set temperature during the heating operation. Is desirable. On the other hand, during the cooling operation, it is desirable that the lowest target temperature among those target temperatures is set as the set temperature. As a result, in step S23 described later, air (air-conditioned air A4) effective for air conditioning of all the living rooms 7 (living rooms 7a and 7b on the first floor) can be discharged from the air conditioner 20. For the living rooms 7a and 7b on the first floor, air conditioning to the set target temperatures includes air-conditioned air A4 using dampers (not shown) provided at the other ends of the second flow path 13. This is done by individually adjusting the supply amount of air A6 in the air conditioning chamber 11.

If it is determined in step S22 that the temperature of the suction air A3 (shown in FIG. 2) is negative (“Y” in step S22), the next step S23 is carried out. In step S23 of the present embodiment, the air volume of the first fan 14 and / or the indoor unit fan 21c is controlled so that air (including air conditioning air A4) stays in the air conditioning chamber 11 shown in FIG.

On the other hand, if it is determined in step S22 that the temperature of the suction air A3 is not negative (“N” in step S22), the next step S24 is carried out. As described above, in the air conditioning step S2 of the present embodiment, the air A6 of the air conditioning room 11 including the air conditioning air A4 is supplied to the living room 7 without staying until the temperature of the suction air A3 is determined to be negative. Therefore, the living room 7 can be efficiently air-conditioned.

In step S23 of the present embodiment, as described above, the air volume of the first fan 14 and / or the indoor unit fan 21c is increased so that air (including air conditioning air A4) stays in the air conditioning chamber 11 shown in FIG. Be controlled. The step S23 is processed by the air volume adjusting unit 43 included in the program unit 37 shown in FIG. 3 being read into the working memory 33 and executed by the calculation unit 31. FIG. 6 is a conceptual diagram showing an example of a state in which air stays in the air conditioning chamber 11.

The procedure for controlling the air volume of the first fan 14 and / or the indoor unit fan 21c is not particularly limited as long as air (including air conditioning air A4) can be retained in the air conditioning chamber 11. Further, the air volume of the first fan 14 and / or the indoor unit fan 21c is controlled by the calculation unit 31 (shown in FIG. 3) transmitting a signal to the first fan 14 and the air conditioner (indoor unit fan 21c). Can be done.

In the present embodiment, the air volume of the first fan 14 is set to be smaller than the air volume of the indoor unit fan 21c. The air volume of the indoor unit fan 21c may be set to be larger than the air volume of the first fan 14. As a result, the air (air-conditioned air A4) supplied to the living room 7 (shown in FIG. 1) from the first fan 14 via the second flow path 13 rather than the air (air-conditioned air) A4 discharged from the indoor unit 21. (Including) A6 is reduced. Therefore, in step S23, air (including air-conditioned air A4) A7 can be retained in the air-conditioned room 11.

The air A7 (including the air-conditioned air A4) staying in the air-conditioned room 11 mixes with the air A5 in the building 2 supplied to the air-conditioned room 11 and the underfloor air A2 (outside air A1) during the heating operation. These airs can be warmed. On the other hand, during the cooling operation, the stagnant air A7 (including the air-conditioning air A4) mixes with the air A5 in the building 2 supplied to the air-conditioning room 11 and the underfloor air A2 (outside air A1). Can cool the air. Then, the air A5 in the building 2 supplied to the air conditioning chamber 11, the underfloor air A2 (outside air A1), and the air-fuel mixture of the stagnant air A7 (suctioned air A3) are sucked into the indoor unit 21. As a result, in step S23, the temperature of the suction air A3 can be brought close to the set temperature, so that air effective for air conditioning of the living room 7 or the like (air conditioning air A4) can be discharged from the indoor unit 21 at an early stage. It becomes. As a result, the air conditioning method (air conditioning system 1) of the present embodiment can improve the start-up property of air conditioning.

Further, when the air conditioner 20 stores the heat of the compressor of the outdoor unit (not shown) and the stored heat can be used for the defrosting operation and the heating operation during the defrosting operation, the stored heat is stored. If the heat generated is small, it may not be possible to obtain the amount of heat required for defrosting. In the present embodiment, the temperature of the suction air A3 can be raised by retaining air (including the conditioned air A4) in the air conditioning chamber 11, so that the amount of heat stored increases and the amount of heat required for defrosting is increased. It becomes possible to obtain.

The ratio of the air volume of the first fan 14 to the air volume of the indoor unit fan 21c can be appropriately set as long as air (including air conditioning air A4) can be retained in the air conditioning chamber 11. The air volume of the first fan 14 can be set, for example, within the range of 0.5 to 0.9 times the air volume of the indoor unit fan 21c.

Further, the greater the negative degree of the temperature of the suction air A3 (that is, the greater the degree to which the temperature of the suction air A3 deviates in a direction disadvantageous to air conditioning), the greater the air volume of the first fan 14 becomes the indoor unit. It may be set smaller than the air volume of the fan 21c. As a result, the larger the negative degree of the temperature of the suction air A3, the larger the amount of air A7 (including the air conditioning air A4) staying in the air conditioning chamber 11, so that the start-up property of the air conditioning can be effectively improved. Can be done.

It is desirable that the air volume of the first fan 14 is set to be equal to or higher than the air volume of the outside air supply fan 27. Thereby, the air conditioning method (air conditioning system 1) of the present embodiment can ventilate and air-condition the living room 7 (shown in FIG. 1) based on the ventilation frequency required for the building 2.

In step S23 of the present embodiment, if the temperature of the suction air A3 is not negative, as shown in FIG. 2, the air volume of the first fan 14 is set to the indoor unit so that the air A6 in the air conditioning chamber 11 does not stay. The air volume of the fan 21c or more is set, and the next step S24 is carried out. As a result, the air conditioning method (air conditioning system 1) of the present embodiment can increase the supply amount of air A6 effective for air conditioning in the living room 7 (shown in FIG. 1), so that the living room 7 can be effectively air-conditioned. ..

Next, in step S24 of the present embodiment, it is determined whether or not there is an instruction to stop the air conditioning operation. The process S24 is processed by the determination unit 41 included in the program unit 37 shown in FIG. 3 being read into the working memory 33 and executed by the calculation unit 31. The determination as to whether or not there is an instruction to stop the air conditioning operation is performed, for example, based on the instruction information regarding the stop of the air conditioning operation (heating operation or cooling operation) input by the resident or the like to the input means 34.

When it is determined in step S24 that there is an instruction to stop the air conditioning operation (“Y” in step S24), the step S25 for stopping the air conditioning operation by the air conditioner 20 is carried out, and a series of processes in the air conditioning step S2 is performed. finish.

On the other hand, in step S24, when it is determined that there is no instruction to stop the air conditioning operation by the air conditioner 20 (for example, there is an instruction to start the air conditioning operation) (“N” in step S24), steps S22 to S24 It will be carried out again. As a result, in the air-conditioning process S2, the living room 7 (shown in FIG. 1) in the building 2 can be continuously air-conditioned until the instruction to stop the air-conditioning operation is given.

In step S25 of the present embodiment, the air conditioning operation by the air conditioner 20 (shown in FIG. 1) is stopped. In step S25, the air-conditioning operation start / stop unit 42 of the program unit 37 shown in FIG. 3 is read into the work memory 33 and executed by the calculation unit 31 for processing. In step S25, the calculation unit 31 transmits a signal for stopping the air conditioning operation to the air conditioner 20. As a result, in step S25, the air conditioning operation by the air conditioner 20 shown in FIGS. 1 and 2 can be stopped. On the other hand, the operation of the first fan 14 and the outside air supply fan 27 is continued. As a result, the air conditioning method (air conditioning system 1) of the present embodiment can supply the underfloor air A2 (outside air A1) to the living room 7 to ventilate the living room 7 while circulating the air A5 in the building 2.

As shown in FIG. 4, in the step S3 of the present embodiment, it is determined whether or not there is an instruction to end the air conditioning control (air conditioning method) by the air conditioning system 1. In step S3, the determination unit 41 included in the program unit 37 shown in FIG. 3 is read into the working memory 33 and executed by the calculation unit 31 for processing. Whether or not there is an instruction to end the air conditioning method is determined based on, for example, the instruction information input to the input means 34 by a resident or the like, or the occurrence of an abnormal termination such as interrupt processing.

When it is determined in step S3 that there is an instruction to end the air conditioning control by the air conditioning system 1 (“Y” in step S3), a series of processes of the air conditioning method is completed. On the other hand, if it is determined in step S3 that there is no instruction to end the air conditioning control (“N” in step S3), steps S1 to S3 are performed again. As a result, the air conditioning method (air conditioning system 1) of the present embodiment can continue to air-condition the building 2 until the end instruction is given.

In step S22 (shown in FIG. 5) of the previous embodiments, a predetermined target temperature is set in the living room 7 as a set temperature for determining whether or not the temperature of the suction air A3 is negative. It is not limited to such an aspect. As the set temperature, an adjustment target temperature may be set in which a predetermined target temperature in the living room is modified in consideration of heat loss in the second flow path 13 shown in FIGS. 1 and 2. For example, when the temperature drops due to heat loss in the second flow path 13 during the heating operation, the adjustment target temperature obtained by adding the target temperature to the lowered temperature is set as the set temperature. On the other hand, when the temperature rises due to heat loss in the second flow path 13 during the cooling operation, the adjustment target temperature obtained by subtracting the rising temperature from the target temperature is set as the set temperature. By setting such an adjustment target temperature as a set temperature, air effective for air conditioning (air conditioning air A4) can be reliably discharged from the air conditioner 20.

In the steps S23 (shown in FIG. 5) of the previous embodiments, an embodiment in which the air volume of the first fan 14 is set to be small or an embodiment in which the air volume of the indoor unit fan 21c is set to be large has been exemplified. Not limited to. For example, the air volumes of the first fan 14 and the indoor unit fan 21c may both be set small. As a result, in step S23 of this embodiment, air A7 (including air conditioning air A4) is retained in the air conditioning chamber 11 shown in FIG. 6, and the air volume of the indoor unit fan 21c is reduced to reduce the air volume of the suction air A3. The amount can be reduced, and heat exchange can be performed efficiently. The ratio of the air volume of the first fan 14 to the air volume of the indoor unit fan 21c is preferably set within the above range.

Although the particularly preferable embodiments of the present invention have been described in detail above, the present invention is not limited to the illustrated embodiments and can be modified into various embodiments.

The air conditioning system shown in FIGS. 1 and 2 was installed in the building (Example 1 and Example 2). In the control devices of the first and second embodiments, when the temperature of the suction air of the indoor unit is negative with respect to the preset temperature based on the procedures of FIGS. 4 and 5, air is introduced into the air-conditioning chamber. The air volume of the first fan and / or the indoor unit fan was controlled so as to stay.

For comparison, an air conditioning system excluding the control devices of Example 1 and Example 2 was installed in the building (Comparative Example). In the comparative example, even when the temperature of the suction air of the indoor unit was negative with respect to the set temperature, the air volume of the first fan and / or the indoor unit fan was controlled without retaining the air in the air conditioning chamber. Then, when the temperature of the suction air was negative, the discharge temperature of the conditioned air of Examples 1, 2 and Comparative Examples, and the amount of heat supplied to the living room were measured. The common specifications are as follows, and the test results are shown in Table 1.
Air conditioner:
Operation mode: Heating indoor unit fan air volume: 1400m ³ / h
Set temperature (target temperature): 20 ° C

As a result of the test, in Examples 1 and 2, the discharge temperature of the conditioned air and the amount of heat supplied to the living room could be increased as compared with the comparative example, and the living room could be efficiently air-conditioned. Further, in the second embodiment, the air volume of the first fan can be reduced as compared with the first embodiment, and a large amount of air can be retained in the air-conditioned room. Therefore, the discharge temperature of the air-conditioned air and the supply to the living room. The amount of heat could be increased.

1 Air conditioning system 2 Building 7 Living room 11 Air conditioning room 12 1st flow path 13 2nd flow path 14 1st fan 15 Control device 20 Air conditioner 21 Indoor unit 21c Indoor unit fan

Claims (5)

The air conditioning system of the building
Inside, an air-conditioning room with an indoor unit of an air conditioner and
A first flow path that supplies at least the air in the building to the air conditioning room,
A second flow path in which one end communicates with the air conditioning room and the other end communicates with the living room in the building.
A first fan for supplying air from the air conditioning chamber to the living room via the second flow path, and
Including control device
The indoor unit has an indoor unit fan for sucking and discharging air in the air-conditioned room.
When the temperature of the suction air of the indoor unit is negative with respect to the preset temperature, the control device of the first fan and / or the indoor unit fan so that the air stays in the air conditioning chamber. Control the air volume,
Building air conditioning system. The building air conditioning system according to claim 1, wherein the set temperature is a target temperature predetermined for the living room. The air-conditioning system for a building according to claim 1 or 2, wherein the set temperature is an adjustment target temperature obtained by modifying a predetermined target temperature in the living room in consideration of heat loss in the second flow path. The building according to any one of claims 1 to 3, wherein the control device reduces both the air volume of the first fan and the indoor unit fan when the temperature of the suction air is negative with respect to the set temperature. Air conditioning system. It ’s a way to air-condition a building.
Including an air conditioning process for air conditioning a living room in the building using an air conditioning system including an air conditioner.
The air-conditioning system includes an air-conditioning room in which the indoor unit of the air conditioner is arranged.
A first flow path that supplies at least the air in the building to the air conditioning room,
A second flow path in which one end communicates with the air conditioning chamber and the other end communicates with the living room.
A first fan for supplying air from the air conditioning chamber to the living room via the second flow path is included.
The indoor unit has an indoor unit fan for sucking and discharging air in the air-conditioned room.
In the air conditioning step, when the temperature of the suction air of the indoor unit is negative with respect to a predetermined set temperature, the first fan and / or the indoor unit fan so that the air stays in the air conditioning chamber. Including the step of controlling the air volume,
How to air-condition the building.

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