JP2021085638A - Air circulation system - Google Patents

Abstract

To clean air in a plurality of rooms easily and efficiently.SOLUTION: An air circulation system comprises: an air blowing unit comprising a filter, and an air blowing fan (33) for sending cleaned air passed through the filter to a plurality of rooms; a damper (41) provided on an air supply path from the air blowing unit to discharge ports of the respective rooms; storage means (52) for storing presence/absence information of the respective rooms as schedule information (52a); and air volume adjustment means (54) for adjusting an air volume for the plurality of rooms by controlling the intensity of the air blowing fan and the opening degree of the damper on the basis of the schedule information stored in the storage means.SELECTED DRAWING: Figure 3

Description

The present invention relates to an air circulation system, and more particularly to a system that circulates air in a building.

An example of a system for circulating air in a building is disclosed in Japanese Patent Application Laid-Open No. 7-97830 (Patent Document 1). In Patent Document 1, when the air in the collector rises to a predetermined temperature due to the sunlight, the warmed air is circulated by a circulation fan to warm the entire building.

Even in the entire building air-conditioning system equipped with an air conditioner (air conditioner), the air-conditioned air from the air conditioner is supplied to a plurality of rooms and the air-conditioned air is circulated in the building.

Japanese Unexamined Patent Publication No. 7-97830

Since the purpose of the air circulation system as described above is to circulate the conditioned air, in order to purify the air in the room, it is often the case that a device independent of the air circulation system such as a ventilation system is relied on.

Further, in a system specialized in air purification, control such as adjusting the operating intensity (that is, air volume) of a fan is performed based on a detection signal by a sensor (for example, a dust sensor) provided in the room. In this case, when there are a plurality of rooms to be cleaned, a sensor is required for each room, which complicates the system configuration. Further, when the air volume to the room to be cleaned is changed only by adjusting the operating strength of the fan, there is a concern that the electric energy will increase. Therefore, a technique capable of efficiently cleaning the air in a plurality of rooms by a simple method without using a sensor has been desired.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an air circulation system capable of easily and efficiently cleaning air in a plurality of rooms. ..

An air circulation system according to an aspect of the present invention is an air circulation system that circulates air in a building, and includes a blower unit, a damper, a storage means, and an air volume adjusting means. The blower unit has a filter that purifies the air taken in from the air intake port, and a blower fan that sends the clean air that has passed through the filter to a plurality of rooms. The damper is provided on the air supply path from the blower unit to the outlet of each room. The storage means stores the presence / absence information of each room as schedule information. The air volume adjusting means adjusts the air volume to a plurality of rooms by controlling the strength of the blower fan and the opening degree of the damper based on the schedule information stored in the storage means.

Preferably, a determination means for determining the presence / absence of each of the plurality of rooms is further provided based on the schedule information. The air volume adjusting means operates the blower fan strongly when the number of existing rooms is more than a predetermined number, and sets the blower fan to a weak operation when the number of existing rooms is less than a predetermined number, and supplies air to the absent room. The opening of the damper provided on the route is narrowed down.

The determination means may determine that each room is present at a predetermined time before the time when the room changes from absent to present.

Preferably, an air conditioner having a heat exchanger is further provided. In this case, the blower unit takes in the conditioned air discharged from the air conditioner and sends the conditioned air cleaned by the filter to a plurality of rooms.

Preferably, an operating means that is operated by the user and accepts the temperature setting of each room is further provided. In this case, the storage means stores the temperature setting information for each time zone of each room received via the operating means as schedule information.

Buildings are typically multi-storey homes. In such a case, it is desirable that the air conditioner is common to a plurality of floors, and the blower unit and the air supply path are provided for each floor.

According to the present invention, it is possible to easily and efficiently clean the air in a plurality of rooms.

It is a figure which shows typically the building which adopted the air circulation system which concerns on embodiment of this invention. (A) and (b) are diagrams schematically showing the internal configuration of the air conditioning control room provided in the building of FIG. (A) is a block diagram showing a functional configuration of an air circulation system according to an embodiment of the present invention, and (b) is a diagram showing an example of temperature setting information using an operation panel. It is a flowchart which shows the air cleaning process which the air circulation system which concerns on embodiment of this invention performs in an interim period. (A) to (c) are diagrams conceptually showing the method of adjusting the air volume to a plurality of rooms according to the embodiment of the present invention.

Embodiments of the present invention will be described in detail with reference to the drawings. The same or corresponding parts in the drawings are designated by the same reference numerals, and the description thereof will not be repeated.

<About the outline configuration>
First, a schematic configuration of the air circulation system 1 according to the present embodiment will be described. FIG. 1 is a diagram schematically showing a building 100 that employs the air circulation system 1.

With reference to FIG. 1, the air circulation system 1 is a system that circulates air in the building 100. Building 100 is a house having a plurality of floors (for example, two floors), and a plurality of rooms are arranged on each floor. In the present embodiment, the “room” refers to a space partitioned by a partition wall or an outer wall of the building 100, and includes a living room such as a living room or a bedroom, and a non-living room such as a toilet or a corridor.

In the example of FIG. 1, a plurality of living rooms 111 and non-living rooms 113 are arranged on the first floor of the building 100, and a plurality of living rooms 121 and non-living rooms 123 are arranged on the second floor of the building 100. The non-living rooms 113 and 123 shown in FIG. 1 are passage rooms (passage spaces) such as an entrance hall and a staircase hall.

The air circulation system 1 repeatedly supplies air to the plurality of living rooms 111 on the first floor and the plurality of living rooms 121 on the second floor, and takes in air from at least one of the non-living rooms 113 and 123. The air in the building 100 is circulated. That is, the air circulation system 1 circulates the air in the building 100 without taking in the outside air (outdoor air). The air circulation system 1 includes at least a blower unit having a filter for purifying the air taken in from the air intake port and a blower fan for sending the clean air that has passed through the filter to the plurality of living rooms 111 and 121.

In the present embodiment, the air circulation system 1 functions as an air conditioning system in the entire building, and circulates the air (air conditioning air) heat exchanged by the air conditioner in the building 100. In this case, the blower unit takes in the conditioned air discharged from the air conditioner and sends the conditioned air cleaned by the filter to the plurality of living rooms 111 and 121. The room to be air-conditioned (cleaned) is not limited to a living room, and may include a non-living room such as a washroom.

In the present embodiment, the air conditioning control room 10 is provided as one room in the building 100. As an example, the air conditioning control room 10 is provided facing the non-living room 123 on the second floor, and a door 16 that can be opened and closed is provided in front of the air conditioning control room 10. That is, the door 16 can be opened and closed from the non-living room 123. A configuration example of the air conditioning control room 10 will be described below.

(Air conditioning control room)
FIG. 2A is a front view schematically showing the internal configuration of the air conditioning control chamber 10, and FIG. 2B is a cross-sectional view schematically showing the internal configuration of the air conditioning control chamber 10. In FIG. 2, the arrow A1 indicates the vertical direction of the air conditioning control room 10, the arrow A2 indicates the lateral width direction of the air conditioning control room 10, and the arrow A3 indicates the front of the air conditioning control room 10. In the description of the air conditioning control room 10, the door 16 side is referred to as the front. The front-back direction is also referred to as the depth direction.

The air conditioning control room 10 is a room (machine room) surrounded by a pair of side walls 11, a rear wall 12, and a front wall 13 provided with a door 16. The side wall 11, the rear wall 12, and the front wall 13 are composed of a standing wall (partition wall or outer wall) of the building 100 itself. Further, the floor surface 14 of the air conditioning control room 10 is formed by the upper surface of the floor on the second floor of the building 100, and the ceiling surface 15 of the air conditioning control room 10 is formed by the lower surface of the ceiling on the second floor of the building 100. Note that FIG. 2A shows a state in which the front wall 13 has been removed.

The door 16 is typically a hinged door, but may be a sliding door. The door 16 is configured in the same manner as the door provided at the entrance / exit of the living rooms 111 and 121. Therefore, the height dimension of the door 16, that is, the opening height H1 of the front wall 13 is 170 cm or more. The plane shape of the air conditioning control room 10 is typically a square shape having one module (about 90 cm to 100 cm) as one side in the architectural design. That is, the width of each standing wall surrounding the air conditioning control room 10 is 80 cm or more and 110 cm or less.

The front wall 13 is provided with an air intake port 19 located above the door 16. By driving the blower fan 33, which will be described later, outside (non-living room 123) air is taken into the air conditioning control room 10 from the air intake port 19. When the door 16 is fully closed, the gap between the lower end of the door 16 and the floor surface 14 is set so that the air intake port 19 is the only opening that communicates the internal space of the air conditioning control room 10 with the non-living room 123. It is desirable to fill it with a shielding member (not shown). The shielding member is preferably made of a soft material such as rubber or resin. The shielding member is attached to, for example, the lower end of the door 16.

As shown in FIGS. 2A and 2B, an air conditioner 20 having a heat exchanger and a blower unit 30 having a filter 32 and a blower fan 33 are independent of each other inside the air conditioning control chamber 10. It is arranged. The air conditioner 20 is, for example, a wall-mounted air conditioner for home use, and is installed in front of a hanging wall 18 as a partition wall spanned between a pair of side walls 11. The filter 32 and the blower fan 33 of the blower unit 30 are mounted on one housing 31. Since the air conditioner 20 is provided separately from the housing 31, the chamber box is composed of only the blower unit 30. Therefore, in the following description, the blower unit 30 is also referred to as a chamber box 30.

The chamber box 30 is located below the air conditioner 20 and is installed on the floor surface 14 of the air conditioning control room 10. The air conditioner 20 and the chamber box 30 are arranged so as to face the door 16 of the front wall 13. Therefore, when the door 16 is opened, the entire air conditioner 20 and the chamber box 30 are exposed to the non-living room 123 side. The chamber box 30 is provided so that it can be taken out from the air conditioning control room 10 to the non-living room 123 side when the door 16 is opened.

The hanging wall 18 is provided at a substantially central position in the depth direction of the air conditioning control room 10. The hanging wall 18 is attached to the ceiling surface 15 and extends downward from the ceiling surface 15. The lower end height H2 of the hanging wall 18 with respect to the floor surface 14 is, for example, 70 cm or more and 120 cm or less. The space on the front wall 13 side (door 16 side) of the hanging wall 18 is referred to as a first space 10a, and the space on the rear wall 12 side of the hanging wall 18 is referred to as a second space 10b. The first space 10a and the second space 10b communicate with each other at a position below the hanging wall 18.

The entire air conditioner 20 is located below the height of the lower end of the air intake port 19 and below the height of the upper end of the door 16. Specifically, the air conditioner 20 is installed below the vertical center position of the hanging wall 18. As a result, during the operation of the air conditioner 20, the air that has flowed into the first space 10a from the air intake port 19 is efficiently sucked from the suction port 21 provided at the upper end of the air conditioner 20. Further, since the air conditioner 20 is installed in a relatively low place, maintenance of the air conditioner 20 can be easily performed from the non-living room 123 side.

An air flow between the air conditioner 20 and the door 16 (in a fully closed state) and at least one between the air conditioner 20 and the side wall 11 when the air conditioner 20 is stopped (intermediate period). There is a gap (space) that can be a road. In FIG. 2B, the flow of air passing through the gap between the air conditioner 20 and the door 16 (in the fully closed state) when the operation of the air conditioner 20 is stopped is indicated by an arrow F.

The chamber box 30 is arranged directly below the air conditioner 20. The chamber box 30 is provided in a substantially box-shaped housing 31 in which the upper side is opened and the lower side is closed, a filter 32 provided in the housing 31, and is provided in the housing 31 or attached to the housing 31. Includes the blower fan 33. For example, four legs may be provided at the lower end of the housing 31.

The opening 30a at the upper part of the housing 31 is provided on the entire upper surface of the housing 31. The opening 30a is an air intake port and faces the discharge port 22 provided at the lower end of the air conditioner 20. The position of the front surface of the air conditioner 20 is located behind the position of the front surface of the housing 31, and the discharge port 22 is arranged in the region of the opening 30a in a plan view. That is, the width dimension L4 of the opening 30a is equal to or greater than the width dimension L2 of the discharge port 22, and the depth dimension L6 of the opening 30a is larger than the depth dimension L5 of the air conditioner 20. Therefore, the conditioned air discharged from the discharge port 22 of the air conditioner 20 can be taken into the chamber box 30 without leakage from the opening 30a. The width dimension L4 of the opening 30a may be slightly smaller than the width dimension L2 of the discharge port 22.

The width dimension L3 of the chamber box 30 (housing 31) itself is equal to or slightly smaller than the width dimension L1 of the air conditioner 20. The width dimension L3 of the chamber box 30 is less than the opening width of the front wall 13 when the door 16 is open. As a result, the chamber box 30 can be easily taken out to the non-living room 123.

The filter 32 is provided on the upstream side of the blower fan 33. Therefore, the filter 32 is provided inside the upper region of the housing 31. More specifically, the filter 32 is attached to the upper region of the housing 31 so as to be exposed from the opening 30a.

The separation distance L7 between the lower end of the air conditioner 20 (outlet port 22) and the upper end of the housing 31 is preferably, for example, 5 cm or more and 20 cm or less. If the two are separated by 5 cm or more, the filter 32 can be maintained from above the housing 31 in the installed state without removing the chamber box 30 (housing 31).

The blower fan 33 is provided on the rear side of the lower region of the housing 31. All or most of the housing 31 is arranged in the first space 10a, and the blower fan 33 is arranged in the second space 10b. From a functional point of view, the filter unit composed of the upper region of the housing 31 and the filter 32 is arranged in the first space 10a, and the fan unit composed of the lower region of the housing 31 and the blower fan 33 is provided. , The first space 10a and the second space 10b are arranged.

As shown in FIG. 2A, the front plate constituting the front surface of the housing 31 is screwed to the main body frame of the housing 31, and by removing the screws, the housing 31 can be seen from the non-living room 123 side. Internal maintenance can also be performed. The front plate may be divided into an upper region and a lower region.

In the illustrated example, the entire chamber box 30 (housing 31) is located below the hanging wall 18. In this case, a part of the upper end surface of the chamber box 30 may face the lower end surface of the hanging wall 18 in a state of being close to the lower end surface. The upper end of the chamber box 30 may be arranged so as to overlap the vertical position of the hanging wall 18, and in this case, the rear surface of the upper end of the chamber box 30 is arranged so as to be in contact with the front surface of the hanging wall 18. Will be done.

In the present embodiment, two blower fans 33 are attached to the lower region of the housing 31. One of the two fans 33 is a blower for the living room 111 on the first floor, and is connected to one end of the main duct 34a for the first floor. The other of the two fans 33 is a blower for the living room 121 on the second floor, and is connected to one end of the main duct 34b for the second floor. The main ducts 34a and 34b are arranged in the second space 10b.

The main duct 34a for the first floor extends downward from the lower end of the chamber box 30 and penetrates the floor surface 14 of the air conditioning control room 10, and the other end is connected to the branch chamber 35 provided in the ceiling space 120 on the first floor. Has been done. That is, the main duct 34a for the first floor is branched into a plurality of branch ducts 36 via the branch chamber 35. The branch duct 36 constitutes an air supply path from the chamber box 30 to the outlet 112 of each living room 111 on the first floor.

The main duct 34b for the second floor extends upward from the upper end of the chamber box 30 and penetrates the ceiling surface 15 of the air conditioning control room 10 to the branch chamber 37 provided in the attic space (attic space) 120 on the second floor. The other end is connected. That is, the main duct 34b for the second floor is branched into a plurality of branch ducts 38 via the branch chamber 37. The branch duct 38 constitutes an air supply path from the chamber box 30 to the outlet 122 of each living room 121 on the second floor.

The number of branch ducts 36, 38 corresponds to the number of air-conditioned rooms on each floor. Each of the branch ducts 36 and 38 is provided with a damper 41 as an air volume variable mechanism. The opening degree of each damper 41 is adjusted by a control device described later. As a result, even if the blower fan 33 is common to each floor, the air supply ratio to the plurality of living rooms can be adjusted. That is, the amount of air circulation in each living room can be adjusted. The default opening degree of the damper 41 is, for example, 100% (fully open).

<About functional configuration>
FIG. 3A is a block diagram showing a functional configuration of the air circulation system 1. The air circulation system 1 controls the operation panel 42 and the entire system in addition to the above-mentioned air conditioner 20, two blower fans 33, and dampers 41 provided in a plurality of air supply paths (branch ducts 36 and 38). The control device 50 is provided. The control device 50 includes a control unit 51 that performs various arithmetic processes, a storage unit 52 that stores various information and programs, and a timekeeping unit 53 that performs a timekeeping operation.

The operation panel 42 integrally includes an operation unit for inputting an instruction from the user and a display unit for displaying various information. The operation panel 42 accepts temperature settings for the air-conditioned living rooms 111 and 121.

The storage unit 52 stores the presence / absence information of the air-conditioned rooms 111 and 121 as schedule information 52a. The schedule information 52a may be set for each floor of the building 100. That is, the storage unit 52 may store the schedule information 52a for the living room 111 on the first floor and the schedule information 52a for the living room 121 on the second floor.

In the present embodiment, the temperature setting information for each time zone of each living room is used as presence / absence information (schedule information 52a). An example of temperature setting information using the operation panel 42 is shown in FIG. 3 (b). In this example, it is assumed that four living rooms 111 (for example, LDK, master bedroom, Western-style room, and Japanese-style room) are arranged on the first floor, for example. In this case, four branch ducts 36 are connected to the branch chamber 35 shown in FIG. 2 (b).

As shown in FIG. 3B, the room temperature of each of the four living rooms 111 is set for each time zone. Specifically, each room is in each of the four time zones of early morning (0:00 to 7:00), morning (7:00 to 12:00), afternoon (12:00 to 18:00), and night (18:00 to 24:00). The room temperature of 111 is set. The time zone for dividing the day is not limited to such a division method, and may be, for example, an hour unit.

In the winter (heating period), the room temperature during the time zone when the room is in the room (for example, 21 ° C.) is set higher than the room temperature during the time zone when the room is absent (for example, 17 ° C.). In FIG. 3B, the time zone when the person is in the room is shown in a thick frame. For example, in LDK, early morning and afternoon are scheduled to be in the room, and morning and night are scheduled to be absent. In this way, since the high and low of the set temperature corresponds to the presence or absence of a person, the temperature setting information corresponds to the presence / absence information.

Such daily temperature setting information (presence / absence information) of each living room 111 is stored in the storage unit 52 as schedule information 52a. Therefore, by referring to the schedule information 52a, it is possible to discriminate between the living room where it is estimated that there is a person (living room) and the living room where there is no person (absent living room) in each time zone. Is possible. In the summer, the room temperature in the time zone when the room is in the room is set lower than the room temperature in the time zone when the room is absent. It is assumed that there is.

The control unit 51 controls the air conditioner 20, the blower fan 33, and the damper 41 based on the schedule information 52a in the summer and winter. That is, the control temperature and operating intensity of the air conditioner 20, the operating intensity of each blower fan 33, and the opening degree of each damper 41 are adjusted. As a result, the room temperature of each living room can be adjusted according to the time zone.

The air circulation system 1 according to the present embodiment stops the operation of the air conditioner 20 and continues the operation of the blower fan 33 in the intermediate period (spring, autumn). In this case, the air taken into the air conditioning control room 10 (first space 10a) from the air intake port 19 flows down through the space on the side or in front of the air conditioner 20, and enters the chamber box 30 through the opening 30a. Be guided. Since the chamber box 30 has a filter 32 inside, the air in the living rooms 111 and 121 can be purified by operating the blower fan 33 in the intermediate period.

That is, the air purified by passing through the filter 32 in the chamber box 30 by the operation of the blower fan 33 for the first floor passes through the main duct 34a and the plurality of branch ducts 36, and is used in a plurality of rooms on the first floor. It is supplied to 111. Similarly, by operating the blower fan 33 for the second floor, the air purified through the filter 32 in the chamber box 30 passes through the main duct 34b and the plurality of branch ducts 38, and a plurality of the air is supplied to the second floor. Air is supplied to the living room 121.

In this way, even in the intermediate period when air conditioning is not required, the air in each of the living rooms 111 and 121 can be purified by circulating the air in the living room 111 on the first floor and the living room 121 on the second floor.

Here, in the present embodiment, one blower fan 33 can send purified air to a plurality of living rooms on the same floor, but the degree of air pollution in the living room is different. Therefore, it is effective to adjust the amount of air supply (air circulation amount) according to the degree of air pollution in each living room.

In general, the degree of air pollution in a living room correlates with the presence or absence of a person because the dust concentration increases as the person moves. Therefore, in the present embodiment, the air volume to the living rooms 111 and 121 is adjusted based on the temperature setting information of the air conditioning period (winter and summer), that is, the schedule information 52a.

Specifically, the control unit 51 controls a plurality of strengths of the blower fan 33 for the first floor and the opening degree of the damper 41 of the branch duct 36 based on the schedule information 52a for the first floor. Adjust the air volume to the living room 111. Similarly, the control unit 51 controls the strength of the blower fan 33 for the second floor and the opening degree of the damper 41 of the branch duct 38 based on the schedule information 52a for the second floor, thereby controlling a plurality of living rooms 121. Adjust the air volume to. The adjustment of the air volume is realized by controlling the blower fan 33 and the damper 41 so that the amount of air supplied to the existing living room is larger than the amount of air supplied to the absent living room.

That is, the control unit 51 in the present embodiment includes the determination unit 54 and the air volume adjusting unit 55 as its functions. The determination unit 54 determines the presence / absence of each of the plurality of living rooms based on the schedule information 52a. The air volume adjusting unit 55 adjusts the air volume to a plurality of living rooms by controlling the strength of the blower fan 33 and the opening degree of the damper 41 according to the determination result by the determination unit 54.

<About operation>
The operation of the air circulation system 1 in the interim period will be described. FIG. 4 is a flowchart showing an air cleaning process (air circulation process) in the interim period. The air cleaning process is executed for each floor of the building 100 when the operation of the air conditioner 20 is stopped. Here, it is assumed that the four living rooms (LDK, master bedroom, Western-style room, and Japanese-style room) illustrated with reference to FIG. 3B are arranged on the first floor of the building 100. In the following description, the LDK will be referred to as living room 1, the master bedroom will be referred to as living room 2, the Western-style room will be referred to as living room 3, and the Japanese-style room will be referred to as living room 4.

First, the control unit 51 reads out the schedule information 52a for the first floor stored in the storage unit 52 (step S2). When a predetermined determination timing such as when the time zone is switched (YES in step S4), the determination unit 54 of the control unit 51 is present / absent in all the living rooms 1 to 4 based on the schedule information 52a. Is estimated (determined) (step S5).

When there is no existing room (NO in step S6), the air volume adjusting unit 55 of the control unit 51 sets the operating strength (fan notch) of the blower fan 33 to “weak” (step S16). In this case, the opening degrees of all the dampers 41 are the same, which is typically the default value (for example, 100%). When this process is completed, the process returns to step S4.

Based on the temperature setting information (air conditioning schedule) illustrated in FIG. 3 (b), the afternoon and night time zones in which all four rooms are set as absent correspond to this pattern. FIG. 5A schematically shows the operating strength (weak) of one fan 33 and the opening degree (100%) of the four dampers 41 according to this pattern. In FIG. 5, the air supply routes for each of the living rooms 1 to 4 are indicated by arrows 36a to 36d. In the case of this pattern, the air volume to all the living rooms 1 to 4 is relatively small and is the same.

As a result of the estimation in step S5, if there is a living room (YES in step S6), the determination unit 54 determines the number of living rooms. When there are three or more living rooms (YES in step S8), the air volume adjusting unit 55 sets the operating strength (fan notch) of the blower fan 33 to be “strong” (step S14). Even in this case, the opening degrees of all the dampers 41 are the same, which is typically a default value (for example, 100%). When this process is completed, the process returns to step S4.

Based on the temperature setting information (air conditioning schedule) illustrated in FIG. 3 (b), this pattern corresponds to the early morning time zone in which the three rooms 1 to 3 are set as present. FIG. 5B schematically shows the operating strength of one fan 33 and the opening degree of the four dampers 41 according to this pattern. In this case, the amount of air supplied to all the living rooms 1 to 4 including the absent living room 4 is increased as compared with the pattern of FIG. 5A. As a result, the amount of air circulation in each living room is increased, so that the degree of air pollution in the living room can be reduced.

On the other hand, when there are one or two living rooms (NO in step S8), the air volume adjusting unit 55 keeps the operating intensity of the blower fan 33 "weak" (step S10) and dampers. The opening degree of 41 is adjusted (step S12). Specifically, the opening degree of the damper 41 on the air supply path (branch duct 36) leading to the absent living room is smaller than the opening degree of the damper 41 on the air supply path leading to the remaining living room (existing living room). squeeze. For example, the opening degree of the damper 41 on the air supply route to the existing living room is 100%, and the opening degree of the damper 41 on the air supply route to the absent living room is 10%. When this process is completed, the process returns to step S4.

Based on the temperature setting information (air conditioning schedule) illustrated in FIG. 3B, this pattern corresponds to the afternoon time zone in which the two living rooms 1 and 3 are set as present. FIG. 5C schematically shows the operating strength of one fan 33 and the opening degree of the four dampers 41 according to this pattern. In this case, by adjusting the opening degree of the damper 41 to significantly reduce the amount of air supplied to the absent living rooms 2 and 4, the existing living room 1 does not have to change the operating intensity of the blower fan 33 to "strong". The amount of air supplied to, 3 can be increased as compared with the pattern of FIG. 5 (a). As a result, the degree of air pollution in the existing living rooms 1 and 3 can be efficiently reduced while suppressing the increase in electrical energy.

As described above, according to the present embodiment, the air circulation system 1 functioning as the whole building air conditioning system can be effectively utilized even in the intermediate period. Further, since it is possible to determine (estimate) the presence or absence of a person in the living room based on the preset schedule information 52a without providing a sensor (for example, a dust sensor) for each room to be air-conditioned (cleaning target), it is inexpensive. The air cleaning efficiency of a plurality of living rooms can be improved by a simple method. Further, when the number of living rooms is small, the air circulation amount of the existing living room can be secured without setting the operating strength of the fan 33 to "strong" by adjusting the opening degree of the damper 41, which saves energy. Can be expected.

<Modification example>
In the present embodiment, the air volume to the living room is increased during the time zone stored as "present" in the storage unit 52, but the air volume starts from a predetermined time (for example, 1 hour) before the time when the person changes from absent to present. May be increased. That is, the determination unit 54 may determine that each living room is present at a predetermined time before the time when the room changes from absent to present (the start time of being present defined by the schedule information 52a). As a result, when the resident enters the room, the air in the living room is purified, so that the comfort of the resident can be improved. On the contrary, even after the time for switching from presence to absence has passed, it may be determined that the person is present for a predetermined time (for example, 30 minutes). As a result, the dust remaining after the resident leaves the room can be effectively removed.

Further, in the present embodiment, the number of living rooms when the operating strength of the fan 33 is increased is set to 3 or more, but the number of living rooms is not limited to 3 and may be determined according to the area of each living room. Alternatively, the operating intensity of the fan 33 is not limited to the form of changing the operating intensity of the fan 33 depending on the number of living rooms, and the operating intensity of the fan 33 may be changed according to the total area of the existing living rooms.

Further, in the present embodiment, an example of using the temperature setting information of the air conditioner 20 as the schedule information 52a has been described, but the present invention is not limited to such an example. The schedule information 52a may be information (presence / absence information) separately set for the interim period.

Further, in the present embodiment, an example in which one air conditioner 20 air-conditions a room on a plurality of floors is shown, but a plurality of air conditioners 20 may be provided according to the number of floors of the building 100. That is, the air conditioner 20 and the blower fan 33 (blower unit) may have a one-to-one relationship.

Further, in the present embodiment, an example in which the air conditioner 20 is arranged independently from the blower unit (chamber box) 30 having the filter 32 and the blower fan 33 has been described, but the air conditioner 20 is housed in a common box. , The filter 32, and the blower fan 33 may be mounted.

Further, although an example in which the air conditioner 20 and the blower unit 30 are installed in the air conditioning control room 10 accessible from the non-living room 123 in the building 100 has been described, these may be provided in the ceiling space 120 or the like.

Further, in the present embodiment, an example in which the air circulation system 1 includes the air conditioner 20 has been described, but the present invention is not limited to such an example. That is, the air circulation system 1 does not have to function as an air conditioning system in the entire building. In this case, the determination unit 54 and the air volume adjusting unit 55 of the control unit 51 may operate throughout the year.

Although the building 100 has a plurality of floors in the present embodiment, it may have a single floor. Further, the building 100 is not limited to a house, but may be a nursing care facility or the like.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and it is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 Air circulation system, 10 air conditioning control room, 20 air conditioner, 30 blower unit (chamber box), 31 housing, 32 filters, 33 blower fan, 34a, 34b main duct, 35,37 branch chamber, 36,38 branch duct (Air supply path), 41 damper, 42 operation panel, 50 control device, 51 control unit, 52 storage unit, 52a schedule information, 53 timing unit, 54 judgment unit, 55 air volume adjustment unit, 100 buildings, 111,121 living rooms, 113,123 Non-living room.

Claims (6)

An air circulation system that circulates air inside a building
A blower unit having a filter for purifying the air taken in from the air intake port and a blower fan for sending the clean air that has passed through the filter to a plurality of rooms.
A damper provided on the air supply path from the blower unit to the outlet of each room,
A storage means for storing the presence / absence information of each room as schedule information,
An air circulation system including an air volume adjusting means for adjusting an air volume to a plurality of rooms by controlling the strength of the blower fan and the opening degree of the damper based on the schedule information stored in the storage means. .. Further provided with a determination means for determining the presence / absence of each of the plurality of rooms based on the schedule information.
The air volume adjusting means strongly operates the blower fan when the number of existing rooms is more than a predetermined number, and weakly operates the blower fan when the number of existing rooms is less than a predetermined number, and moves to an absent room. The air circulation system according to claim 1, wherein the opening degree of the damper provided on the air supply path of No. 1 is narrowed down. The air circulation system according to claim 2, wherein the determination means determines that each room is present at a predetermined time before the time when the room changes from absent to present. Further equipped with an air conditioner with a heat exchanger
The air circulation system according to any one of claims 1 to 3, wherein the air blowing unit takes in the conditioned air discharged from the air conditioner and sends out the conditioned air cleaned by the filter to a plurality of rooms. It is further equipped with an operating means that is operated by the user and accepts the temperature setting of each room.
The air circulation system according to claim 4, wherein the storage means stores the temperature setting information for each time zone of each room received via the operation means as the schedule information. The building is a multi-storey house
The air circulation system according to claim 4 or 5, wherein the air conditioner is common to a plurality of floors, and the blower unit and the air supply path are provided for each floor.

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