JP6912435B2 - Air circulation system and air circulation method - Google Patents

Description

The present invention relates to a system and a method for circulating air in a plurality of spaces provided in a building or the like.

The following Patent Document 1 proposes a ventilation and air conditioning system for a building. This ventilation and air conditioning system is equipped with a fan that circulates the air in the living room of the building and an air conditioner for supplying the conditioned air to the living room, and can air-condition the living room while ventilating the living room.

JP-A-2017-083097

By the way, when the air quality of the living room deteriorates (for example, CO ₂ concentration, pollen, dust, dust, etc. increase), it is important to promptly discharge the deteriorated air from the living room. In the ventilation and air conditioning system of Patent Document 1, if the amount of air circulation is increased in order to discharge deteriorated air from the living room, heat exchange in the air conditioner is promoted, and as a result, the living room is air-conditioned more than necessary (cooling). Or there was a problem that it would be heated).

The present invention has been devised in view of the above circumstances, and is capable of preventing excessive air conditioning of a plurality of spaces while maintaining the air quality of the plurality of spaces in a good state. Its main purpose is to provide systems and air circulation methods.

The present invention is an air circulation system, wherein an air quality detecting means for detecting an air quality in a plurality of spaces, an air circulation means for circulating air between the plurality of spaces, and the detected air quality. The air circulation means includes a control means for controlling the air circulation means, and the air circulation means includes a fan for circulating the air and an air conditioner for supplying air-conditioned air to the plurality of spaces. The control means includes a first circulation control mode and a second circulation control mode, in which the first circulation control mode satisfies the predetermined criteria for the air quality of all the spaces. In this case, the air conditioner and the fan are operated according to a predetermined first rule, and the second circulation control mode is when the air quality in at least one of the spaces does not satisfy the standard. The air conditioning action of the air conditioner is reduced and the amount of air circulated by the fan is increased as compared with the first circulation control mode.

In the air circulation system according to the present invention, the smaller the temperature difference between the temperature of the air after circulating in the plurality of spaces and the air conditioning temperature set in the air conditioner, the more the air conditioner is said. The air conditioning action is reduced, and the temperature difference in the second circulation control mode may be smaller than that in the first circulation control mode.

In the air circulation system according to the present invention, in the second circulation control mode, the first circulation control is performed by setting the average value of the target temperature of the air conditioning set for each of the plurality of spaces to the air conditioning temperature. The temperature difference may be smaller than that in the mode.

The present invention is an air circulation method, which includes a circulation control step for circulating air between a plurality of spaces by using an air circulation means including a fan and an air conditioner, and the circulation control step is a detection. The detection step includes the step, the first circulation control step, and the second circulation control step, the detection step detects the air quality of the plurality of spaces, and the first circulation control step is the air of all the spaces. When the quality satisfies a predetermined standard, the air conditioner and the fan are operated according to the predetermined first rule, and the second circulation control step is performed by the air quality in at least one space. When the criteria are not satisfied, the air conditioning action of the air conditioner is reduced and the amount of air circulated by the fan is increased as compared with the time of the first circulation control step.

In the air circulation method according to the present invention, the smaller the temperature difference between the temperature of the air after circulating in the plurality of spaces and the air conditioning temperature set in the air conditioner, the more the air conditioner is said. The air conditioning action is reduced, and the second circulation control step may make the temperature difference smaller than that of the first circulation control step.

In the air circulation method according to the present invention, the second circulation control step controls the first circulation by setting the average value of the target temperature of the air conditioning set for each of the plurality of spaces to the air conditioning temperature. The temperature difference may be smaller than that at the time of stepping.

The air circulation system of the present invention includes control means for controlling the air circulation means based on the air quality detected in a plurality of spaces. The control means includes a first circulation control mode and a second circulation control mode.

In the first circulation control mode, the air conditioner and the fan are operated according to the predetermined first rule when the air quality of all the spaces satisfies the predetermined standard. Thereby, the air conditioning of each space can be controlled according to the first rule.

On the other hand, in the second circulation control mode, when the air quality in at least one of the spaces does not satisfy the standard, the air conditioning action of the air conditioner is lowered as compared with the first circulation control mode. Moreover, the amount of air circulation by the fan is increased. In the second circulation control mode, the circulation amount of the air in the second circulation control mode can be increased, so that the air in the deteriorated space can be efficiently dispersed in another space to form a specific space. The deterioration of air quality can be returned to a good state at an early stage.

Further, in the second circulation control mode, since the air conditioning action of the air conditioner is reduced, even if the amount of air circulation increases, excessive heat exchange by the air conditioner is suppressed, and the plurality of spaces. Can be prevented from being over-air-conditioned.

It is sectional drawing which conceptually showed an example of an air circulation system. It is sectional drawing which shows an example of a ventilation air-conditioning unit. It is a conceptual diagram which shows an example of the structure of a control means. It is a conceptual diagram which shows an example of a storage part. It is a flowchart which shows an example of the processing procedure of an air circulation method. It is a flowchart which shows an example of the processing procedure of a circulation control step. It is a flowchart which shows an example of the processing procedure of the 1st circulation control step. It is a flowchart which shows an example of the processing procedure of the 2nd circulation control step. It is a graph which shows the relationship between the CO _{2 concentration and time of an Example.}

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 cross-sectional view conceptually showing an example of an air circulation system 1. The air circulation system 1 of the present embodiment is for circulating air in a plurality of spaces 3. The plurality of spaces 3 of the present embodiment are provided in, for example, a building 2 such as a house or a building, but the present invention is not limited to such an embodiment. In order to enhance the air conditioning effect of the air circulation system 1, it is desirable that the building 2 has excellent heat insulating performance, light shielding (heat shielding) performance, and airtightness.

The space 3 of the present embodiment includes an underfloor space 4 and an above-floor space 5.

The underfloor space 4 is a space surrounded by the foundation 6, the ground 7, and the floor 8 on the first floor. The foundation 6 is provided with an opening 9 for taking in the outside air A3. The outside air A3 taken in from the opening 9 exchanges heat with the underground heat having little temperature change throughout the year through the ground 7. As a result, the underfloor space 4 can store A3, 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.

The above-floor space 5 is a space provided above the underfloor space 4. The above-floor space 5 of the present embodiment includes a plurality of living rooms 10 and non-living rooms (not shown) such as a washroom and a toilet. The living room 10 includes living rooms 10a and 10b on the first floor and living rooms 10c and 10d on the second floor. The floor space 5 may be provided with, for example, an exhaust fan (not shown) that forcibly discharges at least a part of the air in the floor space 5 to the outside.

The air circulation system 1 of the present embodiment circulates the air in the living room 10 (living rooms 10a and 10b on the first floor and living rooms 10c and 10d on the second floor) in the space 3. The air circulation system 1 may circulate the air in any space 3.

The air circulation system 1 of the present embodiment includes an air quality detecting means 11, an air circulation means 12, and a control means 13.

The air quality detecting means 11 is for detecting the air quality of a plurality of spaces 3. The air quality detecting means 11 of the present embodiment is provided in each living room 10 (living rooms 10a and 10b on the first floor and living rooms 10c and 10d on the second floor) for circulating air, respectively, and the first air quality detecting means 11a, It is configured to include a second air quality detecting means 11b, a third air quality detecting means 11c, and a fourth air quality detecting means 11d. The air quality detecting means 11 may be provided only in an arbitrary space 3.

As the air quality detecting means 11, for example, _{a known air quality sensor capable of detecting the CO 2} concentration, humidity, and the amount of dust (for example, the amount of pollen, PM2.5, dust, etc.) can be adopted. The air quality detection means 11 of the present embodiment employs an air quality sensor capable of detecting _{the CO 2 concentration.}

The air circulation means 12 is for circulating air between a plurality of spaces 3 (living rooms 10a and 10b on the first floor and living rooms 10c and 10d on the second floor). The air circulation means 12 of the present embodiment has a fan 15 for circulating air and air for supplying air-conditioned air (hereinafter, may be simply referred to as “air-conditioned air”) A1 to a plurality of spaces 3. It is configured to include a harmonizer 16. In the present embodiment, the fan 15 and the air conditioner 16 (indoor unit 16A) are housed inside the ventilation / air conditioning unit 17.

The ventilation / air conditioning unit 17 includes a unit main body 18 configured to be installed on the floor 8. The unit main body 18 of the present embodiment is installed on the floor 8 on the second floor, but is not limited to such an embodiment. The unit main body 18 may be installed on the floor 8 on the first floor, or may be installed on the floor 8 on the floor above the second floor, for example.

FIG. 2 is a cross-sectional view showing an example of the ventilation / air conditioning unit 17. The unit main body 18 of the present embodiment is formed in a box shape having a plurality of spaces 19 inside the unit main body 18. The space 19 includes a first space 19a, a second space 19b, a third space 19c, and a fourth space 19d. Further, the unit main body 18 includes a chamber 20. The first space 19a to the fourth space 19d and the chamber 20 are divided by, for example, a frame material, a face material supported by the frame material, and the like.

The first space 19a is formed in a box shape and is divided above the second space 19b. An air conditioner 16 (indoor unit 16A) is housed in the first space 19a of the present embodiment.

The air conditioner 16 is, for example, a general household separate air conditioner. The air conditioner 16 includes an indoor unit 16A and an outdoor unit (not shown) installed outside the building 2 as a set. The indoor unit 16A has a suction port 16a and an outlet 16b. The suction port 16a is for taking air into a heat exchanger (not shown) inside the indoor unit 16A. The outlet 16b is for discharging the conditioned air A1 conditioned by the heat exchanger.

As the air conditioner 16 of the present embodiment, one capable of controlling the air conditioning action (for example, an inverter control method) is adopted. In such an air conditioner 16, the smaller the temperature difference (absolute value) between the temperature of the air taken in from the suction port 16a and the air conditioning temperature set in the air conditioner 16, the lower the air conditioning action. can. The temperature of the air taken in from the suction port 16a may be the temperature of the air A2 after circulating in the plurality of spaces 3, or the air-fuel mixture of the circulated air A2 and the underfloor air (outside air) A3. It may be the temperature of. The temperature may be measured by the temperature sensor of the air conditioner 16 or by a temperature sensor or the like attached near the suction port 16a. On the other hand, in the air conditioner 16, the larger the temperature difference, the higher the air conditioning action. Therefore, the air conditioner 16 can flexibly adjust the air conditioning action only by adjusting the amount of air blown according to the temperature of the air taken in from the suction port 16a, so that the air conditioner 16 can efficiently air-condition.

The upper surface material that divides the upper side of the first space 19a is provided with an air supply port 21 and an outside air intake port 22. The air supply port 21 and the outside air intake port 22 are provided on the suction port 16a side of the indoor unit 16A (in the present embodiment, above the suction port 16a).

The air supply port 21 communicates between the first space 19a and the living room 10. Such an air supply port 21 can supply the air A2 circulating in the plurality of spaces 3 to the suction port 16a of the indoor unit 16A.

A duct 23 for communicating the first space 19a and the underfloor space 4 (shown in FIG. 1) is connected to the outside air intake port 22. An outside air supply fan 24 (shown in FIG. 1) for sending the underfloor air (outside air) A3 to the outside air intake port 22 side is connected to the end of the duct 23 on the underfloor space 4 side. By operating the outside air supply fan 24, the outside air intake port 22 can supply the underfloor air (outside air) A3 to the suction port 16a of the indoor unit 16A. The air volume of the outside air supply fan 24 is set based on, for example, the ventilation frequency required for the building 2.

The first space 19a of the present embodiment communicates with the second space 19b. As a result, the first space 19a can supply the conditioned air A1 discharged from the air outlet 16b to the second space 19b.

The second space 19b is formed in a box shape and is divided above the third space 19c. The filter 26 is housed in the second space 19b. The filter 26 is for purifying the conditioned air A1 supplied from the first space 19a. The filter 26 can be appropriately selected. As the filter 26, for example, a HEPA (High Efficiency Particulate Air) filter, a photocatalytic filter, an activated carbon deodorizing filter, an electrostatic precipitator filter, or the like is preferably arranged alone or in combination.

The second space 19b of the present embodiment communicates with the third space 19c. As a result, the second space 19b can supply the conditioned air A1 purified by the filter 26 to the third space 19c.

The third space 19c is formed in a box shape, and is divided into an upper side of the chamber 20 and a front side of the fourth space 19d. The third space 19c of the present embodiment communicates with the fourth space 19d. As a result, the third space 19c can supply the conditioned air A1 purified by the filter 26 to the fourth space 19d.

The fourth space 19d is formed in a box shape, and is divided into the rear side of the first space 19a, the second space 19b, and the third space 19c, and the upper side of the chamber 20. The fourth space 19d of the present embodiment communicates with the chamber 20. A fan 15 is housed in the fourth space 19d.

As shown in FIGS. 1 and 2, the fan 15 of the present embodiment includes a first fan 15a and a second fan 15b. As the first fan 15a and the second fan 15b, a sirocco fan can be adopted, but the present invention is not limited to such an embodiment. Further, the first fan 15a and the second fan 15b are stored in the same housing 14, but the present invention is not limited to this mode.

The first fan 15a is for supplying the conditioned air A1 supplied to the fourth space 19d to the space 3 (in this example, the living rooms 10a and 10b on the first floor (shown in FIG. 1)). The first fan 15a of the present embodiment supplies the conditioned air A1 supplied to the fourth space 19d to the living rooms 10a and 10b on the first floor via the chamber 20 and the first ducts 31a and 31b. ..

The chamber 20 is formed in a box shape and is divided into the lower side of the third space 19c and the fourth space 19d. The number of the first ducts 31a and 31b of the present embodiment is set to be the same as the number of spaces 3 (in this example, living rooms 10a and 10b on the first floor (shown in FIG. 1)) for supplying the conditioned air A1. .. One end of the first ducts 31a and 31b is connected to the chamber 20. On the other hand, the other ends of the first ducts 31a and 31b are connected to the living rooms 10a and 10b on the first floor, respectively. As a result, the first ducts 31a and 31b can communicate with each other between the chamber 20 and the living rooms 10a and 10b on the first floor. Through such a chamber 20 and the first ducts 31a and 31b, the first fan 15a can supply the conditioned air A1 supplied to the fourth space 19d to the living rooms 10a and 10b on the first floor, respectively.

As shown in FIG. 1, the other ends of the first ducts 31a and 31b of the present embodiment (in this example, the ends on the first floor living room 10a and 10b side) are supplied to the first ducts 31a and 31b. Dampers 35 (in this example, the first damper 35a and the second damper 35b) that can adjust the air volume of the conditioned air A1 are provided. The larger the opening degree (opening area) of the damper 35, the larger the supply amount of the conditioned air A1 can be. In this embodiment, a damper 35 whose opening degree can be adjusted in a plurality of steps is adopted.

As shown in FIGS. 1 and 2, the second fan 15b is for supplying the conditioned air A1 supplied to the fourth space 19d to the space 3 (in this example, the living rooms 10c and 10d on the second floor). It is a thing. The second fan 15b of the present embodiment supplies the conditioned air A1 supplied to the fourth space 19d to the living room 10c on the second floor via the second duct 32, the branch portion 36, and the third ducts 33a and 33b. It is supplied to 10d.

The branch portion 36 is a chamber for branching and supplying the conditioned air A1 supplied from the second fan 15b to the plurality of spaces 3 (in this example, the living rooms 10c and 10d on the second floor). One end of the second duct 32 is connected to the second fan 15b. On the other hand, the other end of the second duct 32 is connected to the branch portion 36. As a result, the second duct 32 can communicate between the second fan 15b and the branch portion 36.

The number of the third ducts 33a and 33b of the present embodiment is set to be the same as the number of spaces 3 (in this example, living rooms 10c and 10d on the second floor) for supplying the conditioned air A1. One ends of the third ducts 33a and 33b are connected to the branch portion 36. On the other hand, the other ends of the third ducts 33a and 33b are connected to the living rooms 10c and 10d on the second floor, respectively. As a result, the third ducts 33a and 33b can communicate with the branch portion 36 and the living rooms 10c and 10d on the second floor. With such a branch portion 36, the second duct 32, and the third ducts 33a, 33b, the second fan 15b uses the conditioned air A1 supplied to the fourth space 19d (shown in FIG. 2) in the living room 10c on the second floor. It can be supplied to 10d respectively.

The air volume of the conditioned air A1 supplied to the third ducts 33a and 33b is applied to the other ends of the third ducts 33a and 33b of the present embodiment (in this example, the ends on the second floor living room 10c and 10d side). Adjustable dampers 35 (in this example, the third damper 35c and the fourth damper 35d) are provided. The larger the opening degree (opening area) of the damper 35, the larger the supply amount of the conditioned air A1 can be. In this embodiment, a damper 35 whose opening degree can be adjusted in a plurality of steps is adopted.

As shown in FIGS. 1 and 2, the air circulation means 12 having the above configuration has the first space 19a and the second space 19a and the second by operating the fan 15 (in this example, the first fan 15a and the second fan 15b). By making the space 19b and the third space 19c negative pressure, the air A2 circulating in the plurality of spaces 3 (in this example, the living room 10a and 10b on the first floor and the living room 10c and 10d on the second floor) is supplied to the air supply port. It is possible to guide to the first space 19a via 21. The air conditioner 16 can air-condition the air A2 and the underfloor air (outside air) A3 that have circulated in the plurality of spaces 3. Further, the fan 15 (first fan 15a and second fan 15b) purifies the conditioned air A1 with the filter 26, and the purified conditioned air A1 is used in a plurality of spaces 3 (in this example, the living room 10a on the first floor). It can be supplied to 10b and the living rooms 10c and 10d) on the second floor. As a result, the air circulation means 12 can circulate the air (air-conditioned air A1) with the plurality of spaces 3. Further, in the present embodiment, the air-conditioned air A1 that air-conditions the underfloor air (outside air) A3 is supplied to the space 3, and a part of the air in the space 3 is exhausted by the exhaust fan (not shown). 3 can be ventilated.

Next, the control means 13 (shown in FIG. 1) is for controlling the air circulation means 12 based on the detected air quality. The control means 13 is installed on, for example, a partition wall or the like. In the control means 13 of the present embodiment, the first circulation control mode and the second circulation control mode, which will be described later, are executed. FIG. 3 is a conceptual diagram showing an example of the configuration of the control means 13.

The control means 13 includes a calculation unit 41 composed of a CPU (central processing unit), a storage unit 42 in which processing procedures are stored, and a work memory 43 for reading processing procedures and the like from the storage unit 42. There is.

An input means 45 is connected to the calculation unit 41. The input means 45 is composed of, for example, an operation button, a touch panel, or the like provided in the housing of the control means 13. The input means 45 can transmit, for example, the information input by the resident to the calculation unit 41. The information input from the input means 45 is set in, for example, the start and end of the operation of the air circulation system 1 and each space 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor). The target temperature of the air conditioning to be performed is included. The information input from the input means 45 can be appropriately set as needed.

An output means 46 is connected to the calculation unit 41. The output means 46 is configured as a display provided in the housing of the control means 13. The calculation unit 41 can display the operating status of the air circulation system 1 and the like by transmitting a signal to the output means 46.

The air quality detecting means 11 (first air quality detecting means 11a to fourth air quality detecting means 11d) shown in FIG. 1 is connected to the calculation unit 41. As a result, the calculation unit 41 transmits a signal to the air quality detecting means 11 (first air quality detecting means 11a to fourth air quality detecting means 11d), thereby transmitting a plurality of spaces 3 (mainly) to the air quality detecting means 11. In the example, the air quality of the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) can be detected, and the detection result can be transmitted to the calculation unit 41.

The air conditioner 16 shown in FIG. 1 is connected to the calculation unit 41. As a result, the calculation unit 41 can instruct the start and stop of the operation by transmitting a signal to the air conditioner 16. Further, the calculation unit 41 can control the air conditioning action of the air conditioner 16 by setting the air conditioning temperature of the air conditioner 16.

The fan 15 shown in FIG. 1 (in this example, the first fan 15a and the second fan 15b) is connected to the calculation unit 41. As a result, the calculation unit 41 can control the air volume of the first fan 15a and the air volume of the second fan 15b by transmitting signals to the first fan 15a and the second fan 15b.

The damper 35 shown in FIG. 1 (in this example, the first damper 35a to the fourth damper 35d) is connected to the calculation unit 41. As a result, the calculation unit 41 can control the opening degree of the first damper 35a to the fourth damper 35d by transmitting a signal to the first damper 35a to the fourth damper 35d.

FIG. 4 is a conceptual diagram showing an example of the storage unit 42. The storage unit 42 is, for example, a non-volatile information storage device. The storage unit 42 includes a program unit 47 executed by the arithmetic unit 41 (shown in FIG. 3). The program unit 47 is a program that is read into the working memory 43 (shown in FIG. 3) and executed by the arithmetic unit 41 (shown in FIG. 3).

The program unit 47 of the present embodiment includes a first circulation control mode 47a and a second circulation control mode 47b. Further, the program unit 47 of the present embodiment includes an air quality evaluation mode 47c and a stop determination mode 47d.

First, the air quality evaluation mode 47c will be described. The air quality evaluation mode 47c is set in the air quality detecting means 11 (first air quality detecting means 11a to fourth air quality detecting means 11d) shown in FIG. 1 in the space 3 (in this example, the living rooms 10a and 10b on the first floor). The purpose is to detect the air quality of the living rooms 10c and 10d) on the second floor and evaluate the air quality of all the spaces 3 based on the detection result. The air quality evaluation mode 47c of the present embodiment determines whether or not the air quality of all the spaces 3 satisfies a predetermined standard (hereinafter, may be simply referred to as "first standard"). ..

The first criterion is appropriately set according to the target substance of the detected air quality (for example, CO _{2 or dust).} As in the present embodiment, (in this example, the first floor of the room 10a, 10b and the second floor of the room 10c, 10d) each space 3 when the CO ₂ concentration of the detected first reference of CO ₂ concentration (threshold ) Is set, for example, in the range of 700 to 1000 ppm (900 ppm in this example). In the present embodiment, satisfying the first criterion means that the CO ₂ concentration is below the threshold value. The first criterion (threshold value) of the CO ₂ concentration is not limited to such a range, and can be appropriately set according to the required air quality level.

In the calculation unit 41 of the present embodiment, in the air quality evaluation mode 47c, the air quality of all the spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) is the first reference. (In this example, the CO ₂ concentration is equal to or less than the threshold value), the first circulation control mode 47a is executed. On the other hand, when the calculation unit 41 determines that the air quality of at least one space 3 does not satisfy the first criterion (in this example, the CO ₂ concentration is larger than the threshold value) in the air quality evaluation mode 47c, the first 2 Cycle control mode 47b (shown in FIG. 4) is executed.

Next, the first circulation control mode 47a will be described. In the first circulation control mode 47a, the air conditioner 16 and the fan 15 (in this example, the first fan 15a and the second fan 15b) shown in FIGS. 1 and 2 are set according to a predetermined first rule. It is for driving. As described above, in the first circulation control mode 47a of the present embodiment, the air quality of all the spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) is the first reference. When it is satisfied, it is executed by the calculation unit 41.

In the first rule of the present embodiment, the air conditioning action of the air conditioner 16 and the amount of air circulation by the fan 15 (in this example, the first fan 15a and the second fan 15b) are set.

The air conditioning action of the first rule can be set as appropriate. Since the air circulation means 12 of the present embodiment uses one air conditioner 16 to air-condition a plurality of spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor). The temperature of the conditioned air A1 supplied to each space 3 is substantially the same. Therefore, in order to efficiently air-condition the space 3 in which the target temperature for air conditioning during heating is set high (the space in which the target temperature for air conditioning during cooling is set low) 3, the air conditioning action of the air conditioner 16 is high. There is a need to. From this point of view, in the first rule of the present embodiment, the air conditioning action of the air conditioner 16 is enhanced.

As described above, in the air conditioner 16, the smaller the temperature difference (absolute value) between the temperature of the air A2 after circulating in the plurality of spaces 3 shown in FIG. 2 and the air conditioning temperature, the lower the air conditioning action. An inverter control method that enables this is adopted. Therefore, in order to increase the air conditioning action of the first rule, it is necessary to increase the temperature difference.

In the first rule of the present embodiment, the air conditioning temperature at the time of heating the air conditioner 16 is set to each space 3 (in this example, the living room 10a and 10b on the first floor and the living room 10c and 10d on the second floor). The highest target temperature (hereinafter, may be simply referred to as “maximum target temperature”) is specified, and a predetermined adjustment temperature (for example, 3 to 5 ° C.) is added to the maximum target temperature. The value is set. On the other hand, as the air conditioning temperature at the time of cooling of the air conditioner 16, the lowest target temperature (hereinafter, may be simply referred to as “minimum target temperature”) among the target temperatures of air conditioning set in each space 3 is specified. A value obtained by subtracting the adjustment temperature from the minimum target temperature is set. As a result, in the first rule, the temperature difference can be increased, so that the air conditioning action of the air conditioner 16 can be enhanced.

Next, the circulation amount of the first rule is specified by the air volume of the fan 15 shown in FIGS. 1 and 2 (in this example, the total air volume of the first fan 15a and the second fan 15b). The circulation amount of the first rule can be set as appropriate. The larger the temperature difference (absolute value) between the temperature of the air A2 after circulating in the plurality of spaces 3 shown in FIG. 2 and the air conditioning temperature, the larger the air volume of the fan 15 and each space 3 (in this example). It is necessary to air-condition the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor. Therefore, in the first rule of the present embodiment, the larger the temperature difference, the larger the air volume of the fan 15, and the smaller the temperature difference, the smaller the air volume of the fan 15. The range of the circulation amount (air volume of the fan 15) of the first rule is appropriately set. The range of the circulation amount (air volume of the fan 15) of the first rule of the present embodiment is set to ^{, for example, 300 to 1420 m 3 / h.} The range of the circulation amount (air volume of the fan 15) of the first rule may be appropriately changed based on the size of the space 3, the number of spaces 3, and the size of the air conditioning action of the air conditioner 16. can.

Further, in the first rule of the present embodiment, the opening degree of the damper shown in FIG. 1 (in this example, the first damper 35a to the fourth damper 35d) is set.

The opening degree of the damper 35 of the first rule is set to the first damper 35a to the fourth damper 35d, respectively. The opening degree of the damper 35 of the first rule can be appropriately set. As described above, the temperatures of the conditioned air A1 supplied to each space 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) are substantially the same. Therefore, in the first rule of the present embodiment, the opening degree of each damper 35 is set based on the target temperature of the air conditioner set in each space 3.

In the first rule of the present embodiment, the opening degree of the damper 35 of the space 3 in which the target temperature of air conditioning is set high during heating (the space in which the target temperature of air conditioning is set low during cooling) 3 is increased. On the other hand, in the first rule of the present embodiment, the opening degree of the damper 35 of the space 3 in which the target temperature of air conditioning is set low during heating (the space in which the target temperature of air conditioning is desired to be set high during cooling) 3 is reduced. Thereby, in the first rule, the opening degree of the damper 35 can be individually adjusted based on the target temperature of the air conditioner set in each space 3. Therefore, in the first rule, each space 3 can be individually air-conditioned based on the target temperature of the air-conditioning set in each space 3 while using the air-conditioned air A1 having substantially the same temperature.

As described above, in the first circulation control mode 47a, the air conditioning of each space 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) can be controlled according to the first rule. Further, in the first circulation control mode 47a of the present embodiment, the opening degree of the damper 35 (in this example, the first damper 35a to the fourth damper 35d) is controlled based on the first rule, so that each space 3 Each space 3 can be individually air-conditioned based on the target temperature of the air-conditioning set in.

Next, the second circulation control mode 47b will be described. In the second circulation control mode 47b, the air conditioner 16 and the fan 15 (in this example, the first fan 15a and the second fan 15b) shown in FIGS. 1 and 2 are operated according to a predetermined second rule. It is for. As described above, the second circulation control mode 47b of the present embodiment is executed when the air quality of at least one space 3 does not satisfy the first criterion.

In the second rule, the air conditioning action of the air conditioner 16 is reduced as compared with the first circulation control mode, and the amount of air circulated by the fan 15 (in this example, the first fan 15a and the second fan 15b). Is increasing.

The air conditioning action of the second rule can be set as appropriate. As described above, in the air conditioner 16 of the present embodiment, the smaller the temperature difference (absolute value) between the temperature of the air A2 after circulating in the plurality of spaces 3 shown in FIG. 2 and the air conditioning temperature, the more the air conditioning. An inverter control method that can reduce the action is adopted. Therefore, in the present embodiment, the temperature difference in the second circulation control mode is made smaller than the temperature difference in the first circulation control mode, so that the air conditioner is compared with the first circulation control mode. The air conditioning action of 16 can be reduced.

As described above, in the present embodiment, the air-conditioning temperature at the time of heating in the first rule is the maximum target temperature of each space 3 (in this example, the living room 10a and 10b on the first floor and the living room 10c and 10d on the second floor). , And set a value obtained by adding the adjusted temperature (for example, 3 to 5 ° C.), and set a value obtained by subtracting the adjusted temperature from the minimum target temperature of each space 3 for the air conditioning temperature at the time of cooling in the first rule. ing. On the other hand, in the air-conditioning temperature (during heating and during cooling) of the second rule of the present embodiment, the average value of the target temperature of the air-conditioning set for each of the plurality of spaces 3 is set. Such an air conditioning temperature of the second rule can make the temperature difference from the temperature of the air A2 after circulating in the plurality of spaces 3 shown in FIG. 2 smaller than the air conditioning temperature of the first rule. .. Therefore, in the second circulation control mode 47b, the temperature difference can be reduced as compared with the first circulation control mode, and the air conditioning action of the air conditioner 16 can be reduced.

Next, the circulation amount of the second rule is specified by the air volume of the fan 15 (in this example, the total air volume of the first fan 15a and the second fan 15b). The circulation amount of the second rule can be appropriately set as long as it can be increased as compared with the circulation amount in the first circulation control mode (first rule). The circulation amount (air volume of the fan 15) of the second rule of the present embodiment is set to, for example, the maximum value (1420 m ³ / h in this example) of the circulation amount (air volume of the fan 15) of the first rule. .. The circulation amount of the second rule (air volume of the fan 15) can be appropriately changed based on the size of the space 3, the number of spaces 3, and the size of the air conditioning action of the air conditioner 16.

As described above, the air circulation system 1 of the present embodiment can increase the amount of air circulation in the second circulation control mode, so that the air in the deteriorated space 3 and the air in the other space 3 can be separated from each other. It is possible to efficiently supply the air in which they are mixed (that is, the air having a reduced degree of deterioration) to the deteriorated space 3. As a result, the air circulation system 1 of the present embodiment can quickly return the deterioration of the air quality of the specific space 3 to a good state. Further, in the second circulation control mode, since the air conditioning action of the air conditioner 16 is reduced, excessive heat exchange by the air conditioner 16 can be suppressed even if the amount of air circulation increases. Therefore, in the second circulation control mode, it is possible to prevent the plurality of spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) from being excessively air-conditioned.

In the second circulation control mode of the present embodiment, the average value of the target temperature of the air conditioner set for each of the plurality of spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) is set. Since it is set as the air conditioning temperature, for example, the air conditioning temperature is set to the same temperature as the air taken in from the suction port 16a of the air conditioner 16 shown in FIG. 2 (air A2 after circulating a plurality of spaces 3). It is possible to prevent the temperature difference from becoming smaller than necessary (for example, to make the temperature difference zero) as compared with the case of setting. Thereby, in the second circulation control mode, it is possible to prevent the air conditioning of the plurality of spaces 3 from being insufficient.

In order to restore the deterioration of the air quality of the specific space 3 to a good state at an earlier stage, in the second rule, the dampers shown in FIG. 1 (in this example, the first damper 35a to the fourth damper 35d) are opened. It is desirable to increase the degree with respect to the opening degree in the first circulation control mode (first rule). As a result, in the second circulation control mode, the space 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) is not affected by the target temperature of the air conditioning of each space 3. Since the amount of air circulation can be increased, the deterioration of the air quality of the specific space 3 can be returned to a good state at an early stage.

The opening degree of the damper 35 of the second rule (in this example, the first damper 35a to the fourth damper 35d) can be appropriately set. In the second rule of the present embodiment, the opening degrees of the first damper 35a to the fourth damper 35d are fully opened. Thereby, in the second rule, the amount of air circulation in each space 3 can be increased more effectively.

Next, the stop determination mode 47d will be described. The stop determination mode 47d is for determining whether or not to stop the air circulation system 1 shown in FIG. In the stop determination mode 47d of the present embodiment, it is determined whether or not a stop order has been issued by an operation or the like by a resident. When the calculation unit 41 determines that there is a stop command in the stop determination mode 47d, the calculation unit 41 stops the air circulation system 1. On the other hand, the calculation unit 41 executes the air quality evaluation mode 47c when it is determined that there is no stop command in the stop determination mode 47d. As a result, the air circulation system 1 maintains the air quality of the plurality of spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) in good condition until the stop command is given. However, it is possible to prevent the plurality of spaces 3 from being excessively air-conditioned.

Next, the air circulation method will be described. In the air circulation method of the present embodiment, the air circulation system 1 shown in FIGS. 1 and 2 is used. The air circulation method is not limited to the mode in which the air circulation system 1 is used, and for example, a system in which the configuration of the air circulation system 1 is changed may be used. FIG. 5 is a flowchart showing an example of the processing procedure of the air circulation method. In the air circulation method, the configuration of the air circulation system 1 may be designated by the same reference numerals and description thereof may be omitted.

In the air circulation method of the present embodiment, first, the circulation control step S1 is carried out. In the circulation control step S1, the air circulation means 12 including the fan 15 and the air conditioner 16 is used to form a plurality of spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor). Air is circulated between them. In the circulation control step S1 of the present embodiment, a predetermined processing procedure (in the present embodiment, the air quality evaluation mode 47c, the first circulation control mode 47a, and the second circulation control mode 47b shown in FIG. 4) is performed. , Is executed by the arithmetic unit 41 shown in FIG. FIG. 6 is a flowchart showing an example of the processing procedure of the circulation control step S1.

In the circulation control step S1 of the present embodiment, first, the detection step S11 for detecting the air quality of the plurality of spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) and all of them. Step S12 and the like are carried out to determine whether or not the air quality of the space 3 satisfies a predetermined standard (first standard). In the detection steps S11 and S12, the calculation unit 41 (shown in FIG. 3) executes the air quality evaluation mode 47c (shown in FIG. 4).

In the detection step S11 of the present embodiment, as shown in FIGS. 1 and 3, the calculation unit 41 transmits a signal to the first air quality detection means 11a to the fourth air quality detection means 11d to transmit a signal to a plurality of spaces. The air quality of 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) is detected, respectively. Then, the detected air qualities of the plurality of spaces 3 are transmitted to the calculation unit 41. As a result, in the detection step S11, the air quality of the plurality of spaces 3 can be detected. The detected air qualities of the plurality of spaces 3 are stored in the working memory 43 or the like.

Next, in step S12, the air quality of all the spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) is first based on the detection result by the air quality detecting means 11. Whether or not the criteria are met is determined. The specific evaluation procedure of step S12 such as the first criterion is as described in the above-mentioned air quality evaluation mode 47c.

In step S12, when it is determined that the air quality of all the spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) satisfies the first criterion (in step S12, "Y". ”), The first circulation control step S13 is carried out. On the other hand, when it is determined in step S12 that the air quality of at least one space 3 does not satisfy the first criterion (“N” in step S12), the second circulation control step S14 is carried out.

Next, in the first circulation control step S13, the air conditioner 16 and the fan 15 (in this example, the first fan 15a and the second fan 15b) shown in FIGS. Let's drive with. In the first circulation control step S13 of the present embodiment, the first circulation control mode 47a (shown in FIG. 4) is executed by the calculation unit 41 (shown in FIG. 3). FIG. 7 is a flowchart showing an example of the processing procedure of the first circulation control step S13.

In the first circulation control step S13 of the present embodiment, the step S21 for setting the air conditioning action of the air conditioner 16 and the fan 15 (in this example, the first fan 15a and the second fan 15b) are set based on the first rule. ) Is carried out in step S22 for setting the amount of air circulation. Further, in the first circulation control step S13 of the present embodiment, a step S23 for setting the opening degree of the damper 35 (in this example, the first damper 35a to the fourth damper 35d) is carried out. These steps S21 to S23 may be performed simultaneously or individually. The first rule and the specific processing procedure of steps S21 to S23 are as described in the first circulation control mode 47a described above.

As a result, in the first circulation control step S13, the air conditioning of the plurality of spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) can be controlled according to the first rule. Further, in the first circulation control mode 47a of the present embodiment, since the opening degree of the damper 35 (in this example, the first damper 35a to the fourth damper 35d) is controlled in step S23, it is set in each space 3. Each space 3 can be individually air-conditioned based on the target temperature of the air-conditioning.

Next, the second circulation control step S14 reduces the air conditioning action of the air conditioner 16 as compared with the time of the first circulation control step S13, and the fan 15 (in this example, the first fan 15a and the second fan). The amount of air circulation according to 15b) is increased. In the second circulation control step S14 of the present embodiment, the second circulation control mode 47b (shown in FIG. 4) is executed by the calculation unit 41 (shown in FIG. 3). FIG. 8 is a flowchart showing an example of the processing procedure of the second circulation control step S14.

In the second circulation control step S14 of the present embodiment, the step S31 for reducing the air conditioning action of the air conditioner 16 and the fan 15 (in this example, the first fan 15a and the second fan 15b) are based on the second rule. ) Is carried out in step S32 to increase the amount of air circulation. Further, in the second circulation control step S14 of the present embodiment, a step S33 for setting a large opening degree of the damper 35 (in this example, the first damper 35a to the fourth damper 35d) is carried out. These steps S31 to S33 may be performed simultaneously or individually. The second rule and the specific processing procedure of steps S31 to S33 are as described in the second circulation control mode 47b described above. As a result, in the second circulation control step S14, the temperature difference between the temperature of the air A2 after circulating in the plurality of spaces 3 shown in FIG. 2 and the conditioned air is smaller than that in the first circulation control step S13. Therefore, the air conditioning action of the air conditioner 16 can be reduced. Further, in the second circulation control step S14, the amount of air circulated by the fan 15 can be increased. In the second circulation control step, in order to reduce the temperature difference as compared with the first circulation control step, the average value of the air conditioning target temperatures set for each of the plurality of spaces 3 is set as the air conditioning temperature. is doing.

As a result, in the second circulation control step S14, the amount of air circulation can be increased, so that the deterioration of the air quality in the specific space 3 can be returned to a good state at an early stage. Further, in the second circulation control step S14, since the air conditioning action of the air conditioner 16 is reduced, excessive heat exchange by the air conditioner 16 can be suppressed even if the amount of air circulation increases. Therefore, in the second circulation control step S14, it is possible to prevent the plurality of spaces 3 from being excessively air-conditioned.

In the second circulation control step S14 of the present embodiment, the average value of the target temperature of the air conditioner set for each of the plurality of spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) is set. , The air conditioning temperature is set. Therefore, in the second circulation control step S14, for example, the temperature of the air (air A2 after circulating the plurality of spaces 3) taken in from the suction port 16a of the air conditioner 16 shown in FIG. 2 is set to the air conditioning temperature. It is possible to prevent the temperature difference from becoming excessively small (for example, the temperature difference becomes zero) as compared with the case of setting. As a result, in the second circulation control step S14, it is possible to prevent the air conditioning of each space 3 from becoming insufficient.

In the second circulation control step S14 (second circulation control mode 47b), the air volume of the air conditioner 16 may also be increased. As a result, in the second circulation control step S14, the amount of air taken in by the suction port 16a of the air conditioner 16 and the amount of conditioned air A1 discharged from the air outlet 16b can be increased, so that the amount of air can be increased. The amount of circulation can be increased. In the second circulation control step S14, since the air conditioning action of the air conditioner 16 is reduced, even if the air volume of the air conditioner 16 is increased, the air conditioner 16 does not excessively exchange heat. ..

The second circulation control step S14 (second circulation control mode 47b) may be continuously executed until the deteriorated air quality of the space 3 satisfies the second criterion (threshold value) stricter than the first criterion. .. As a result, the air circulation method (air circulation system) can return the air quality of the deteriorated space 3 to a better state. Therefore, in the circulation control step S1, the first circulation control step S13 and the second circulation control It is possible to prevent steps S14 from being alternately executed in a short time. The second criterion can be appropriately set. When the CO ₂ concentration in _{each space 3 is detected, the second reference (threshold value) for the CO 2} concentration is set, for example, in the range of 500 to 700 ppm (600 ppm in this example). The second criterion (threshold value) of the CO ₂ concentration is not limited to such a range, and can be appropriately set according to the required air quality level.

In the second circulation control step S14 (second circulation control mode 47b), it is desirable to continue the operation without increasing the air volume of the outside air supply fan 24. As a result, the air circulation method (air circulation system) prevents the temperature of the space 3 from decreasing (in summer, the temperature rises) due to the increase in the supply of the underfloor air (outside air) A3 while maintaining the ventilation frequency required for the building 2. Can be done.

Next, as shown in FIG. 5, in the air circulation method of the present embodiment, it is determined whether or not there is a stop command for the air circulation system 1 (step S2). In step S2, the calculation unit 41 (shown in FIG. 3) executes the stop determination mode 47d (shown in FIG. 4). The processing procedure in step S2 is as described in the stop determination mode 47d of the air circulation system 1.

When it is determined in step S2 that there is a stop command (“Y” in step S2), the calculation unit 41 (shown in FIG. 3) stops the air circulation system 1 and performs a series of processes of the air circulation method. Finish (step S3). On the other hand, if it is determined in step S2 that there is no stop command (“N” in step S2), the circulation control step S1 is executed again. As a result, in the air circulation method of the present embodiment, the air quality of the plurality of spaces 3 (in this example, the living rooms 10a and 10b on the first floor and the living rooms 10c and 10d on the second floor) is good until the stop command is given. It is possible to prevent the plurality of spaces 3 from being excessively air-conditioned while maintaining the state.

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 circulation system shown in FIGS. 1 to 4 was used to circulate air in a plurality of spaces (Example). In the embodiment, based on the processing procedure shown in FIGS. 5 to 8, the detection step (air quality evaluation mode) for detecting the air quality in a plurality of spaces, the air conditioner and the fan are set according to the predetermined first rule. A second cycle that reduces the air conditioning action of the air conditioner and increases the amount of air circulated by the fan as compared with the first circulation control step (first circulation control mode) to be operated and the first circulation control step. A circulation control step (second circulation control mode) was carried out. The specifications of the examples are as follows.

Air quality evaluation mode:
First standard of CO _{2 concentration: 900ppm}
1st circulation control mode (1st rule):
Air conditioning temperature of air conditioner: Maximum target temperature + 4 ℃ (winter)
Air circulation volume (total fan volume): 300m ³ / h
Damper opening: Individually adjusted based on the target temperature of air conditioning set in the space Second circulation control mode (second rule):
Air conditioning temperature of air conditioner: Average value of target temperature of air conditioning set for each space Air circulation amount (total air volume of fan): 860m ³ / h
Damper opening: Fully open CO ₂ concentration second standard: 600ppm
Air volume of outside air supply fan: 175m ³ / h
Bedroom: 8 tatami mats (2 people in the room)

FIG. 9 is a graph showing the relationship between _{the CO 2 concentration and time of the examples.} The graph of FIG. 9 shows the relationship between _{the CO 2 concentration and time in one space (bedroom).} As a result of the test, in the example, when the air quality of one space (bedroom) does not meet the standard (CO ₂ concentration becomes larger than 900 ppm), the second circulation control step (second circulation control mode) is performed. I was able to carry it out. As a result, in the examples, the deterioration of the air quality in a specific space could be returned to a good state at an early stage.

Further, in the embodiment, the difference in room temperature between the first circulation control step (first circulation control mode) and the second circulation control step (second circulation control mode) was ± 2 ° C. Therefore, in the embodiment, it was possible to prevent the plurality of spaces from being excessively air-conditioned while maintaining the air quality of the plurality of spaces in a good state.

3 Space 11 Air quality detection means 12 Air circulation means 13 Control means 15 Fan 16 Air conditioner

Claims (6)

It ’s an air circulation system.
Air quality detection means for detecting air quality in multiple spaces,
An air circulation means for circulating air between the plurality of spaces and
Including a control means for controlling the air circulation means based on the detected air quality.
The air circulation means includes a fan for circulating the air, an air conditioner for supplying conditioned air to the plurality of spaces, and an air volume of the conditioned air to the plurality of spaces, respectively. Including multiple adjustable dampers
The control means includes a first circulation control mode and a second circulation control mode.
In the first circulation control mode, when the air quality of all the spaces satisfies a predetermined standard, the air conditioner , the fan, and the plurality of dampers are operated according to the predetermined first rule. To make you
In the second circulation control mode, when the air quality in at least one of the spaces does not satisfy the standard, the air conditioning action of the air conditioner is lowered as compared with the first circulation control mode, and the air conditioning action of the air conditioner is reduced. The amount of air circulation by the fan is increased , and the opening degree of the plurality of dampers is increased .
Air circulation system.
The air conditioner reduces the air conditioning action as the temperature difference between the temperature of the air after circulating in the plurality of spaces and the air conditioning temperature set in the air conditioner is smaller.
The air circulation system according to claim 1, wherein the second circulation control mode reduces the temperature difference as compared with the first circulation control mode. In the second circulation control mode, by setting the average value of the target temperature of the air conditioner set for each of the plurality of spaces to the air conditioning temperature, the temperature difference is increased as compared with the first circulation control mode. The air circulation system according to claim 2, which is made smaller. It ’s an air circulation method.
Includes a circulation control step that circulates air between multiple spaces using air circulation means including a fan and an air conditioner and multiple dampers.
The plurality of dampers are for adjusting the air volume of the conditioned air to the plurality of spaces, respectively.
The circulation control step includes a detection step, a first circulation control step, and a second circulation control step.
The detection step detects the air quality of the plurality of spaces and
In the first circulation control step, when the air quality of all the spaces satisfies a predetermined standard, the air conditioner , the fan, and the plurality of dampers are operated according to the predetermined first rule. Let me
When the air quality in at least one of the spaces does not satisfy the standard, the second circulation control step lowers the air conditioning action of the air conditioner as compared with the first circulation control step. The amount of air circulation by the fan is increased , and the opening degree of the plurality of dampers is increased .
Air circulation method. The air conditioner reduces the air conditioning action as the temperature difference between the temperature of the air after circulating in the plurality of spaces and the air conditioning temperature set in the air conditioner is smaller.
The air circulation method according to claim 4, wherein the second circulation control step reduces the temperature difference as compared with the first circulation control step. In the second circulation control step, by setting the average value of the target temperature of the air conditioning set for each of the plurality of spaces to the air conditioning temperature, the temperature difference is increased as compared with the time of the first circulation control step. The air circulation method according to claim 5, wherein the air circulation method is reduced.

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