JP2018179443A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent reduction in air-conditioning function when a trouble occurs which may stop an operation of a compressor of any one of a plurality of air-conditioners each having a compressor, provided for conditioning air in one target space.SOLUTION: A plurality of air-conditioners 21-29 includes respective compressors 41-49 for compressing coolant circulating in a target space-side heat exchanger and a shared space-side heat exchanger. A system control part 30 is configured to detect that a troubled air-conditioner occurs among the plurality of air-conditioners 21-29 in which any of the compressors 41-49 cannot be operated. When the troubled air-conditioner is found, the system control part 30 controls to change wind direction and/or wind speed of a normal air-conditioner other than the troubled air conditioner compared to the occurrence of the troubled air-conditioner.SELECTED DRAWING: Figure 2

Description

  The present invention performs heat exchange with an air conditioning system, in particular, with air in a common space other than the air conditioning target disposed indoors around the air conditioning target space in order to perform air conditioning in the indoor air conditioning target space. It relates to an air conditioning system.

  BACKGROUND ART Conventionally, an air conditioning system has been proposed that uses a plurality of small integrated air conditioners that perform air conditioning by utilizing an indoor common space such as a ceiling room not to be air conditioned. For example, in the integrated air conditioner described in Patent Document 1 (Japanese Patent Laid-Open No. 48-2756), both a temperature control heat exchanger and a heat dissipation heat exchanger for performing a refrigeration cycle are indoors, in particular It is placed at the boundary with the ceiling. And air of common space is used for heat exchange by a plurality of heat dissipation heat exchangers of a plurality of integral type air conditioners.

  However, in the air conditioning system described in Patent Document 1, since the plurality of integrated air conditioners are operated individually, for example, when any integrated air conditioner breaks down and the compressor does not operate. The air conditioning function of the place where the failed integrated air conditioner was sharing would be degraded.

  It is an object of the present invention to reduce the air conditioning function when a failure occurs such that the compressor does not operate in any of a plurality of air conditioners installed in one air conditioning target space and each having a compressor. It is providing the air conditioning system which can be controlled.

  In the air conditioning system according to the first aspect of the present invention, in order to perform air conditioning of one indoor air conditioning target space, the space between the air conditioning common space outside the air conditioning target space disposed indoors around the air conditioning target space A user-side heat exchanger that exchanges heat between the air in the air-conditioned space and the refrigerant, a heat source-side heat exchanger that exchanges heat between the air in the common space and the refrigerant, and the user-side heat An abnormal air conditioner having a plurality of air conditioners having a compressor that compresses a refrigerant circulating in the exchanger and the heat source side heat exchanger, and in which the compressor can not move is generated among the plurality of air conditioners If the abnormal air conditioner is generated, the control to change the wind direction and / or the wind speed of normal air conditioners other than the abnormal air conditioner is made as compared to that before the abnormal air conditioner is generated. System control unit That.

  According to the air conditioning system pertaining to the first aspect, when the abnormal air conditioner occurs, the system control unit changes the wind direction and / or the wind speed of the normal air conditioner as compared to that before the abnormal air conditioner occurs. Thus, by stopping the abnormal air conditioner, it is possible to supply the conditioned air from the normal air conditioner to the place where the supply of the conditioned air is reduced.

  The air conditioning system according to a second aspect of the present invention is the air conditioning system according to the first aspect, wherein the system control unit performs normal air conditioning when an abnormal air conditioner is generated, as compared to before the abnormal air conditioner is generated. It controls the wind direction of the aircraft to the abnormal air conditioner.

  According to the air conditioning system pertaining to the second aspect, the system control unit directs the wind direction of the normal air conditioner to the abnormal air conditioner, and changes the normal air conditioner from the normal air conditioner to the surrounding of the abnormal air conditioner as compared More conditioned air is supplied.

  An air conditioning system according to a third aspect of the present invention is the air conditioning system according to the first aspect or the second aspect, wherein the plurality of air conditioners are respectively installed on the ceiling of the space to be air conditioned and have a plurality of outlets. Further, the conditioned air can be blown out in a plurality of directions simultaneously from the plurality of outlets.

  According to the air conditioning system pertaining to the third aspect, since the air conditioner has the plurality of outlets, the air conditioner is directed to the periphery of the abnormal air conditioner among the plurality of outlets and the periphery of the abnormal air conditioner It is easier to supply conditioned air to

  An air conditioning system according to a fourth aspect of the present invention is the air conditioning system according to any one of the first aspect to the third aspect, wherein the system control unit specifies position information of a plurality of air conditioners in the air conditioning target space. To control the wind direction and / or the wind speed of normal air conditioners other than the abnormal air conditioner based on the position information, as compared with before the abnormal air conditioner generates. .

  According to the air conditioning system according to the fourth aspect, by changing the wind direction and / or the wind speed of the normal air conditioner based on the position information, the air conditioning function around the abnormal air conditioner in the failure state is effectively performed. The wind direction and / or the wind speed may be changed to compensate. In addition, since position information for specifying the positions of a plurality of air conditioners in the air conditioning target space can be set in the system control unit, for example, the system at the time of initial setting performed when a plurality of air conditioners are installed in the air conditioning target space By setting the position information in the control unit, it is possible to cope with any arrangement of a plurality of air conditioners.

  The air conditioning system according to a fifth aspect of the present invention is the air conditioning system according to the sixth aspect, wherein the system control unit changes the wind direction and / or the wind speed of one or more normal air conditioners near the abnormal air conditioner. It is a thing.

  According to the air conditioning system pertaining to the fifth aspect, it is preferable to change the wind direction and / or the wind speed of one or more normal air conditioners near the abnormal air conditioner by changing the wind direction of the normal air conditioner and / or Or rather than changing the wind speed, it is easier to derive the suppression effect of the deterioration of the air conditioning function around the abnormal air conditioner.

  The air conditioning system according to a sixth aspect of the present invention is the air conditioning system according to the fourth aspect or the fifth aspect, wherein the system control unit determines whether the normal air conditioner corresponds to the distance from the abnormal air conditioner to the normal air conditioner. Change the wind direction and / or the wind speed.

  According to the air conditioning system pertaining to the sixth aspect, since the wind direction and / or the wind speed of the normal air conditioner is changed according to the distance from the abnormal air conditioner to the normal air conditioner, it is effective to be suitable for the distance. It is possible to change the wind direction and / or the wind speed.

  An air conditioning system according to a seventh aspect of the present invention is the air conditioning system according to any one of the first aspect to the sixth aspect, wherein the system control unit comprises one or more normal air conditioners near the abnormal air conditioner. Change the wind direction and / or the wind speed.

  According to the air conditioning system pertaining to the seventh aspect, it is possible to identify the abnormal air conditioner and the normal air conditioner among the plurality of group air conditioners by communication among the plurality of group air conditioners. For example, even when an air conditioner is newly added to the air conditioning target space or the air conditioners currently being grouped are reduced, the simple operation of only the setting of the group is effective for the abnormal air conditioner. It becomes possible to appropriately suppress the deterioration of the air conditioning function due to the occurrence.

  An air conditioning system according to an eighth aspect of the present invention is the air conditioning system according to any one of the first aspect to the seventh aspect, wherein the system control unit is capable of functioning as a normal air conditioner in response to the occurrence of the abnormal air conditioner. To control raising.

  According to the air conditioning system pertaining to the eighth aspect, since the control to increase the capacity of the normal air conditioner is performed in response to the occurrence of the abnormal air conditioner, the state of the air conditioning target space along with the occurrence of the abnormal air conditioner Can be prevented from changing in the direction of unpleasant conditions.

  In the air conditioning system according to the first aspect or the second aspect of the present invention, it is possible to suppress the deterioration of the air conditioning function due to the occurrence of the abnormal air conditioner.

  In the air conditioning system according to the third aspect of the present invention, the deterioration of the air conditioning function caused by the occurrence of the abnormal air conditioner can be easily covered by the normal air conditioner.

  In the air conditioning system according to the fourth aspect of the present invention, the deterioration of the air conditioning function can be effectively suppressed, and the degree of freedom in the arrangement of the air conditioner to which the air conditioning system can be applied is improved, and the air conditioning system is easy to use It becomes a thing.

  In the air conditioning system according to the fifth aspect or the sixth aspect of the present invention, it is possible to effectively suppress the deterioration of the air conditioning function when the abnormal air conditioner is generated.

  In the air conditioning system according to the seventh aspect of the present invention, addition and reduction of air conditioners are facilitated.

  In the air conditioning system according to the eighth aspect of the present invention, the user's discomfort caused by the occurrence of the abnormal air conditioner can be alleviated.

Typical sectional drawing of the building in which the air conditioning system which concerns on embodiment was installed. The typical top view of the building where the air conditioning system concerning an embodiment was installed. BRIEF DESCRIPTION OF THE DRAWINGS The block diagram which shows an example of a structure of the air conditioning system which concerns on embodiment. Typical sectional drawing of the air conditioner which comprises an air conditioning system. The circuit diagram which shows an example of the refrigerant circuit of the air conditioner of FIG. The perspective view which shows an example of the 1st casing of the air conditioner of FIG. The flowchart which shows an example of operation | movement of the air conditioning system of embodiment. Typical sectional drawing of the air conditioner used for the air conditioning system of the modification 1A. Typical sectional drawing of the building in which the air conditioning system of the modification 1B was installed.

(1) Overall Configuration An air conditioning system according to an embodiment of the present invention will be described using FIGS. 1 and 2. The air conditioning system 10 shown in FIGS. 1 and 2 is not included in the air conditioning system disposed in the indoor room 98 around the room RM in order to perform air conditioning of the room RM which is one air conditioned space of the indoor room 98. The heat exchange is performed with the air of the ceiling AT, which is a common space of The indoor 98 is, for example, the inside of the building 90, and the outdoor 99 is, for example, the outside of the building 90. For example, it is possible to control a plurality of air conditioning target spaces corresponding to a plurality of independent common spaces, such as the first floor of the building 90 and the second floor, with one system control unit. is there. However, in that case, the system control unit distinguishes and controls the plurality of air conditioners allocated to one air conditioning target space and the other plurality of air conditioners allocated to the other one air conditioning target space. . In the following, the case where a plurality of air conditioners assigned to one air conditioning target space and one common space are controlled by the system control unit will be described as an example.

  The air conditioning system 10 shown in FIGS. 1 and 2 includes a plurality of separate type air conditioners 21 to 29 and a system control unit 30. The outline | summary of the relationship between the system control part 30 and the other component of the air conditioning system 10 is shown by FIG.

  The above-described nine air conditioners 21 to 29 are all controlled by the system control unit 30. In addition, the ventilation fans 151 and 152 may be configured to be controlled by the system control unit 30. The system control unit 30 communicates with device control units 31 to 39 individually provided in the air conditioners 21 to 29 in order to control the air conditioners 21 to 29.

  As will be described in detail later, in the air conditioners 21 to 29, a plurality of common space side heat exchangers 220 (see FIGS. 4 and 5) are common space for air conditioning of the air conditioning target space. I share the air.

  An air inlet 141 and an air outlet 142 are formed in a wall 91 of the building 90. The outdoor air is sucked from the outdoor 99 through the air inlet 141, and the air of the ceiling AT is exhausted to the outdoor 99 through the exhaust 142, whereby the air of the ceiling AT and the outdoor air are replaced to perform ventilation. Although FIG. 1 illustrates the case where ventilation of the ceiling and back AT is performed by one air inlet 141 and one air outlet 142, the air inlet 141 and the air outlet 142 may be plural. Ventilation fans 151 and 152 are attached to the intake port 141 and the exhaust port 142, respectively.

  The ventilation fans 151 and 152 are, for example, a centrifugal blower, an axial blower or a cross flow blower. The ventilation fans 151 and 152 may be configured to be driven by a motor and switched between operation and stop under the control of the system control unit 30. The system control unit 30 may change the air volume and / or the wind speed of the air passing through the air inlet 141 and the air outlet 142 with respect to the ceiling AT using the ventilation fans 151 and 152 capable of changing the rotational speed.

  By the drive of the ventilation fans 151 and 152, air flows from the air inlet 141 shown by arrows AR1 and AR2 in FIG. Occur. As a result, an air flow from the intake port 141 toward the exhaust port 142 is generated in the ceiling AT. In addition, one of the ventilation fans 151 and 152 may be omitted, for example, the ventilation fan 151 may be omitted and only the ventilation fan 152 may be omitted, in which case the ceiling is accompanied by the generation of the air flow indicated by the arrow AR2. The back AT becomes negative pressure, and an air flow (air flow indicated by an arrow AR1) that flows from the outdoor 99 through the air inlet 144 into the under ceiling AT is generated.

(2) Detailed configuration (2-1) Air conditioners 21 to 29
The air conditioners 21 to 29 may be devices having different structures from each other, but here, all of the air conditioners 21 to 29 are described as being configured with devices having the same structure. Therefore, here, the air conditioner 21 will be described as an example of all the air conditioners 21 to 29 with reference to FIGS. 4 and 5.

  The air conditioner 21 includes a compressor 41, an air conditioning target space heat exchanger 210, a common space heat exchanger 220, a four-way switching valve 240, an expansion valve 250, an accumulator 260, in addition to the above-described device control unit 31. A common space side fan 51, an air conditioning target space side fan 61, a louver 71, and a casing 300 are provided.

  Like the air conditioner 21, the air conditioners 22-29, in addition to the above-mentioned device control units 32-39, respectively, the air-conditioning target space side heat exchanger 210, the common space side heat exchanger 220, and the four-way switching A valve 240, an expansion valve 250, an accumulator 260, and a casing 300 are provided. Furthermore, the air conditioners 22-29 are provided with the compressors 42-49, the common space side fans 52-59, the air-conditioning object space side fans 62-69, and the louvers 72-79.

  In the air conditioner 21, the air-conditioning target space side heat exchanger 210 exchanges heat with the air of the room RM which is the air-conditioning target space. Then, heat is transmitted between the common space side heat exchanger 220 and the air conditioning target space side heat exchanger 210. The common space fan 51 causes the air taken in from the ceiling AT to flow to the common space heat exchanger 220 and blow it out to the ceiling AT again. The air conditioning target space side fan 61 causes the air taken in from the room RM to flow to the air conditioning target space side heat exchanger 210 to blow out the room RM again.

  The air-conditioning target space-side heat exchanger 210 and the common space-side heat exchanger 220 of the air conditioners 21 to 29, for example, include air passing between a large number of fins (not shown) and a plurality of A fin and tube type heat exchanger can be used for heat exchange with the refrigerant flowing in a heat pipe (not shown). Heat is transferred between the air-conditioning object space side heat exchanger 210 and the common space side heat exchanger 220 by the refrigerant flowing through the refrigerant circuit 200.

  For the common space side fan 51 and the air conditioning target space side fan 61 of the air conditioner 21, for example, a centrifugal fan, an axial flow fan or a cross flow fan (cross flow fan) can be used for each. As shown in FIG. 4, the common space side fan 51 and the air conditioning target space side fan 61 of the air conditioner 21 are centrifugal fans. The common space side fan 51 and the air conditioning target space side fan 61 shown here are configured to be able to change their rotational speeds. The common space side fans 52 to 59 of the air conditioners 22 to 29 and the air conditioning target space side fans 62 to 69 are also similar to the common space side fan 51 and the air conditioning target space side fan 61 of the air conditioner 21. Therefore, the system control unit 30 controls the common space-side air flow and air-conditioned space-side air flow to the common space side fans 51 to 59 and the air conditioning target space side fans 61 to 69 of the air conditioners 21 to 29 ( Control the air speed of the air conditioning target space separately from the common air space side and the air conditioning target space side, and individually control the air conditioners 21 to 29. it can.

  The louver 71 of the air conditioner 21 is driven by a motor (not shown). The motor of the louver 71 is controlled by the device control unit 31 and can change the rotation angle. Therefore, the louver 71 can change the wind direction by changing the angle in accordance with the instruction from the system control unit 30. The louvers 72 to 79 of the air conditioners 22 to 29 are also similar to the louver 71 of the air conditioner 21. The louvers 72 to 79 can also change the wind direction according to an instruction from the system control unit 30.

  The separate type air conditioner 21 includes two separate first casing 301 and second casing 302. On the bottom of the first casing 301 exposed to the room RM, a room-side suction port 340 for taking in air from the room RM and a room-side outlet 350 for blowing air to the room RM are formed. Further, in the second casing 302 exposed to the ceiling AT, a common space side inlet 360 for taking in air from the ceiling AT and a common space outlet 370 for blowing air to the ceiling AT are formed. It is done. The air conditioning target space side heat exchanger 210 and the common space side heat exchanger 220 can be formed in a quadrangular ring shape so as to surround the common space fan 51 and the air conditioning target space fan 61. For example, the space side heat exchanger 210 for air-conditioning is formed in a rectangular ring shape having four sides arranged to correspond to the four room side air outlets 350 (350a to 350d) shown in FIG. ing.

  An example of the refrigerant circuit 200 is shown in FIG. In the refrigerant circuit 200 of the air conditioner 21, a compressor 41, a four-way switching valve 240, a common space side heat exchanger 220, an expansion valve 250, an air conditioning target space side heat exchanger 210 and an accumulator 260 are connected by a refrigerant pipe 390 Is configured. During the cooling operation, the four-way switching valve 240 is connected in solid lines, and the refrigerant discharged from the compressor 41 flows to the common space side heat exchanger 220 via the four-way switching valve 240. The refrigerant cooled by heat exchange with air in the ceiling AT in the common space side heat exchanger 220 is expanded by the expansion valve 250 and flows to the air space side heat exchanger 210 for air conditioning. The refrigerant warmed by heat exchange with the air in the room RM in the air-conditioning target space side heat exchanger 210 is sucked into the compressor 41 via the four-way switching valve 240 and the accumulator 260. During the heating operation, the four-way switching valve 240 is connected in a broken line, and the refrigerant discharged from the compressor 41 flows through the four-way switching valve 240 to the air-conditioned space heat exchanger 210. The refrigerant cooled by heat exchange with the air in the room RM in the air-conditioning target space side heat exchanger 210 is expanded by the expansion valve 250 and flows to the common space side heat exchanger 220. The refrigerant warmed by heat exchange with air in the ceiling AT in the common space side heat exchanger 220 is drawn into the compressor 41 via the four-way switching valve 240 and the accumulator 260.

  The air conditioner 21 includes temperature sensors 281 to 286 for control. The temperature sensor 281 detects the temperature of air on the under the floor AT before being heat-exchanged in the common space side heat exchanger 220. The temperature sensor 282 detects the temperature of the air of the room RM (the room temperature of the room RM) before the heat exchange is performed in the air-conditioning target space side heat exchanger 210. The temperature sensor 283 detects the temperature of the refrigerant at the inlet / outlet of the air conditioning target space heat exchanger 210 between the expansion valve 250 and the air conditioning target space side heat exchanger 210. The temperature sensor 284 detects the temperature of the refrigerant at the inlet and the outlet of the common space side heat exchanger 220 between the expansion valve 250 and the common space side heat exchanger 220. The temperature sensor 285 detects the temperature of the refrigerant drawn into the compressor 41 between the accumulator 260 and the compressor 41. The temperature sensor 286 detects the temperature of the refrigerant discharged from the compressor 41 between the compressor 41 and the four-way switching valve 240. The air conditioner 21 is controlled using the temperature sensors 281 to 286 so that the degree of superheat of the refrigerant drawn into the compressor 41 falls within a predetermined range, for example. Further, the temperature of the refrigerant discharged from the compressor 41 is controlled to be equal to or less than a predetermined value. In the refrigerant circuit 200 of the air conditioner 21, a refrigeration cycle, in particular, a vapor compression refrigeration cycle is implemented. The refrigerant circuit 200 of the air conditioners 22-29 is configured in the same manner as the refrigerant circuit 200 of the air conditioner 21 except that the compressor 41 is replaced with the compressors 42-49. The compressors 41 to 49 of the air conditioners 21 to 29 are configured to be capable of changing the capacity by changing the number of rotations (operating frequency).

(2-2) System control unit 30
As shown in FIG. 3, the system control unit 30 includes a microprocessing unit (MPU) 30a, a memory 30b, and a communication unit 30c. The system control unit 30 is connected to the device control units 31 to 39 of the air conditioners 21 to 29. The system control unit 30 is also connected to the ventilation fans 151 and 152. Moreover, the information regarding the driving | running state of the air conditioners 21-29 is transmitted to the system control part 30 from the apparatus control parts 31-39. Therefore, the system control unit 30 can detect whether the air conditioners 21 to 29 are operating.

  For example, the memory 30 b of the system control unit 30 stores a program for controlling the operation of the air conditioning system 10 of the embodiment described later. The MPU 30a transmits an instruction to the device control units 31 to 39 according to the program stored in the memory 30b. Here, although the case where the system control unit 30 is installed inside the building 90 will be described, the system control unit 30 may be installed outside the building 90, and the storage function and processing function of the system control unit 30 May be provided at different places.

(3) Operation of the air conditioning system 10 when the compressor can not move (3-1) Outline In the air conditioners 21 to 29 in the normal state, the compressors 41 to 49 are driven in the thermo-on state The compressors 41 to 49 compress the refrigerant circulating in the space-side heat exchanger 210 for air conditioning of the air conditioners 21 to 29 and the common space side heat exchanger 220. The air conditioning target space side heat exchanger 210 of the air conditioners 21 to 29 performs heat exchange between the air of the room RM which is the air conditioning target space and the refrigerant as the use side heat exchanger. Moreover, the common space side heat exchanger 220 of the air conditioners 21-29 performs heat exchange with the air of the ceiling back AT which is common space as a heat source side heat exchanger, and a refrigerant | coolant.

  By the way, since each of the air conditioners 21 to 29 includes the compressors 41 to 49, for example, even if the air conditioner 24 breaks down and the compressor 44 of the air conditioner 24 can not be moved, The other air conditioners 21-23 and 25-29 can operate normally to continue the air conditioning of the room RM. In the following, the case where the air conditioner 24 is an abnormal air conditioner will be described as an example.

  However, the air conditioning system 10 causes a decrease in air conditioning capacity around the air conditioner 24 (hereinafter referred to as the abnormal air conditioner 24) incapable of moving the compressor 44. Specifically, in the heating operation, the user around the abnormal air conditioner 24 feels cold because only the vicinity of the abnormal air conditioner 24 hardly reaches the set temperature. Further, in the cooling operation, only the periphery of the abnormal air conditioner 24 does not easily reach the set temperature, so the user around the abnormal air conditioner 24 feels hot.

  Therefore, the system control unit 30 monitors the air conditioners 21 to 29 in order to detect that an abnormal air conditioner that can not move the compressors 41 to 49 is generated in the air conditioners 21 to 29. . To that end, the system control unit 30 groups the air conditioners 21 to 29 into a plurality of group air conditioners in which the air conditioners 21 to 29 can communicate with each other via the system control unit 30. . For example, there may be another room next to the room RM, and the system control unit 30 may be configured to manage the two groups separately, with the plurality of air conditioners of the other room as the other group. .

  The device control unit 34 of the abnormal air conditioner 24 controls the air conditioner 24 and controls the operation and stop of the compressor 44 of the air conditioner 24. The device control unit 34 is configured to be able to recognize that the compressor 44 can not be moved due to an abnormality, not a thermo-off. The device control unit 34 is configured to determine that the compressor 44 can not be moved due to an abnormality, for example, when stopping the compressor 44 in a state where the sir-off condition is not satisfied during operation.

  When it is determined that the compressor 44 can not be moved due to an abnormality, the device control unit 34 issues an error code to notify the system control unit 30 that an abnormal air conditioner has occurred. Due to such notification from the device control unit 34, the system control unit 30 indicates that the abnormal air conditioner 24 in a state in which the compressors 41 to 49 can not move in the air conditioners 21 to 29 is generated. It can be detected. The system control unit 30 can simultaneously know air conditioners other than the abnormal air conditioner. In this case, the system control unit 30 can detect that the air conditioners 21 to 23 and 25 to 29 operate normally by the notification from the device control units 31 to 33 and 35 to 39.

  In the following description, the air conditioners 21 to 23 and 25 to 29 operating normally are referred to as normal air conditioners 21 to 23 and 25 to 29, respectively.

  The system control unit 30 that has detected the abnormal air conditioner 24 performs control to change the wind direction and / or the wind speed of the normal air conditioners 21 to 23 and 25 to 29 compared with before the abnormal air conditioner 24 generates. Such a change in the wind direction and / or the wind speed is a change that has been confirmed in advance by simulation, experiment, or the like to compensate for the decrease in the air conditioning capacity around the abnormal air conditioner 24 in the air conditioning system 10. Therefore, the system control unit 30 that has detected the abnormal air conditioner 24 can change the wind direction and / or the wind speed so as to compensate for the decrease in the air conditioning capacity around the abnormal air conditioner 24 in the air conditioning system 10.

(3-2) Change of Wind Direction In order to make it easy to understand the description of the change of the wind direction, in FIG. 2, it is assumed that the direction of air flow in the ceiling AT by the ventilation fans 151 and 152 is from east to west. Each of the air conditioners 21 to 29 has four room-side outlets 350a to 350d as shown in FIG. 6, and the room-side outlets 350a are on the north side, and the room-side outlets 350b are on the north side. It is assumed that the room side air outlet 350c is located on the south side and the room side air outlet 350d is located on the west side. Furthermore, it is assumed that the louvers 71 to 79 of the room side air outlets 350a to 350d are configured to be able to adjust their angles.

  For example, before the abnormal air conditioner 24 is detected, the normal air conditioner located on the south side of the room side outlet 350b of the normal air conditioner 27 on the north side of the abnormal air conditioner 24 and on the south of the abnormal air conditioner 24. It is assumed that louvers 77, 71, 75 of a room side air outlet 350a of 21 and a west side room air outlet 350d of a normal air conditioner 25 on the east side of the abnormal air conditioner 24 are directed downward. When the abnormal air conditioner 24 is detected in such a state, the system control unit 30 controls the louver 77 of the room air outlet 350b of the normal air conditioner 27 and the louver of the room air outlet 350a of the normal air conditioner 21. 71, and the angle of the louver 75 of the room side air outlet 350d of the normal air conditioner 25 is changed upward. For example, when the louvers 71 to 79 are driven by the stepping motor, the angles of the louvers 71 to 79 can be changed upward by the stepping motor by a predetermined angle. That is, when the abnormal air conditioner 24 is generated, the system control unit 30 directs the wind direction of the normal air conditioners 21, 25 and 27 to the abnormal air conditioner 24 as compared to before the abnormal air conditioner 24 is generated. Control to turn. These normal air conditioners 21, 25, 27 are normal air conditioners near the abnormal air conditioner 24. From the normal air conditioners 21, 25, 27 in which the angles of the louvers 71, 75, 77 are changed as described above, the surroundings of the abnormal air conditioner 24 are compared with those before the abnormal air conditioner 24 is detected. More conditioned air is blown out. As a result, the decrease in air conditioning capacity around the abnormal air conditioner 24 is alleviated.

  Although the case where the louvers 71 to 79 can adjust the angles individually with the room side air outlets 350a to 350d has been described here, the angles are simultaneously adjusted for the louvers 71 to 79 with the room side air outlets 350a to 350d. Even in the case where it is the same, the wind direction may be controlled to be directed to the abnormal air conditioner 24. However, since the louvers 71-73, 75-79 of the room side outlets 350a-350d not facing the abnormal air conditioner 24 are also changed, the room side outlets 350a-350d not facing the abnormal air conditioner 24 It is preferable that the change in the angle of the louvers 71 to 73, 75 to 79 is limited to a change within a range that does not cause a great discomfort by predicting the change felt by the user beforehand by simulation or experiment. For example, when the abnormal air conditioner 24 is detected, it is also conceivable to mitigate the decrease in air conditioning capacity around the abnormal air conditioner 24 with one normal air conditioner 25, but as described above, three units may be used. The normal air conditioners 21, 25 and 27 of normal air when the change in the angle of the louvers 71, 75 and 77 is small, and the user feels less if the change in the air conditioning capacity around the abnormal air conditioner 24 is mitigated. It is preferable to select the change in which the change felt by the user near the conditioners 21, 25, 27 is smaller.

  When performing the control as described above, it is necessary to specify the normal air conditioners 21, 25, 27 around the abnormal air conditioner 24 after the detection of the abnormal air conditioner 24. In order to identify the normal air conditioners 21, 25, 27 around the abnormal air conditioner 24, the system control unit 30 arranges the memory 30b in the east, west, south, north, and south in a grid-like manner. The position information of the conditioners 21-29 is stored. When detecting the abnormal air conditioner 24, the system control unit 30 reads out the position information from the memory 30b and specifies the normal air conditioners 21, 25, 27 around the abnormal air conditioner 24. Such position information can be set to the system control unit 30 via the communication unit 30c using, for example, a remote controller (not shown) at the time of setting the air conditioner.

  Although it is efficient to alleviate the decrease in air conditioning capacity around the abnormal air conditioner 24 by the normal air conditioners 21, 25, 27 around the abnormal air conditioner 24, it is You may comprise so that the wind direction of all the normal air conditioners 21-23, 25-29 may be changed, without specifying the normal air conditioners 21, 25, 27 around. For example, for all the louvers 71-73, 75-79 of the normal air conditioners 21-23, 25-29, the angles of all the louvers 71-73, 75-79 are changed so as to reach far. If such a change is made, the wind direction of the normal air conditioners 21 to 23, 25 to 29 can be directed to the abnormal air conditioner 24 as compared to before the abnormal air conditioner 24 is generated.

  The degree of change of the wind direction may be, for example, according to the distance from the abnormal air conditioner to the normal air conditioner. As a method of changing the wind direction, for example, when changing the louvers 71, 75, 77 of the normal air conditioners 21, 25, 27 when the abnormal air conditioner 24 is generated, for example, the louvers 71, A method is conceivable in which the angles 75 and 77 are uniformly changed by the same predetermined angle (for example, raised by 5 degrees). However, if the distance from the abnormal air conditioner 24 to the normal air conditioner 21 and the distance from the abnormal air conditioner 24 to the normal air conditioner 25 are different, the change angle of the louver 71 and the change angle of the louver 75 are different. It is possible to effectively compensate for the decrease in air conditioning capacity due to the occurrence of the abnormal air conditioner 24 by setting the angle suitable for each component. For example, in the case where the change angle of the louver 71 and the change angle of the louver 75 are made different, what kind of angle should be made may be determined in advance by performing simulations or experiments.

(3-3) Change of wind speed In order to make it easy to understand the explanation about the change of wind speed, each of the air conditioners 21 to 29 has three wind speed taps of "large", "medium" and "small". And "large" is the fastest and "small" is the slowest. The change of the wind speed is performed by changing the number of rotations of the air conditioning target space side fans 61 to 69. For example, before the abnormal air conditioner 24 is detected, the speed of the normal air conditioner 27 on the north side of the abnormal air conditioner 24 is "small", and the normal air conditioner 21 on the south side of the abnormal air conditioner 24. It is assumed that the wind speed is "medium" and the wind speed of the normal air conditioner 25 on the east side of the abnormal air conditioner 24 is "small". When the abnormal air conditioner 24 is detected in such a state, the system control unit 30 changes the wind speeds of the normal air conditioners 21 and 27 to "medium", and the wind speed of the normal air conditioner 25 is "large". Change to That is, when the abnormal air conditioner 24 is generated, the system control unit 30 increases the wind speed of the normal air conditioners 21, 25, 27 as compared to before the abnormal air conditioner 24 is generated. Control is performed to supply more conditioned air to the unit 24 from the normal air conditioners 21, 25, 27. These normal air conditioners 21, 25, 27 are normal air conditioners near the abnormal air conditioner 24. As a result, the decrease in air conditioning capacity around the abnormal air conditioner 24 is alleviated.

  When performing the control as described above, it is necessary to specify the normal air conditioners 21, 25, 27 around the abnormal air conditioner 24 after detection of the abnormal air conditioner 24, but , It is the same as the case of control of the above-mentioned wind direction. Although it is efficient to alleviate the decrease in air conditioning capacity around the abnormal air conditioner 24 by the normal air conditioners 21, 25, 27 around the abnormal air conditioner 24, it is In order to change the wind speed of all the air-conditioning object space-side fans 61-63, 65-69 of the normal air conditioners 21-23, 25-29 without specifying the normal air conditioners 21, 25, 27 in the surroundings You may configure it. For example, the wind speeds of all of the normal air conditioners 21 to 23 and 25 to 29 are changed from “small” to “medium” or from “medium” to “large” by one tap. If such a change is made, the wind speed of the normal air conditioners 21 to 23, 25 to 29 is alleviated compared to that before the abnormal air conditioner 24 is generated, and the decrease in air conditioning capacity around the abnormal air conditioner 24 is mitigated. It can be changed as follows.

  The degree of change of the wind speed may be, for example, according to the distance from the abnormal air conditioner to the normal air conditioner.

  As a method of changing the wind speed, for example, when the air conditioning target space side fans 61, 65, 67 of the normal air conditioners 21, 25, 27 are changed when the abnormal air conditioner 24 is generated, regardless of the distance, For example, a method is conceivable in which the taps of the air conditioning target space side fans 61, 65, 67 are uniformly raised by one. However, if the distance from the abnormal air conditioner 24 to the normal air conditioner 21 and the distance from the abnormal air conditioner 24 to the normal air conditioner 25 are different, how to raise the tap of the air conditioning target space side fan 61 and the air conditioning If the target space side fans 65 are different from each other and made suitable for each of them, it is possible to effectively compensate for the decrease in air conditioning capacity due to the occurrence of the abnormal air conditioner 24. For example, in the case where the tap of the air conditioning target space side fan 61 and the tap of the air conditioning target space side fan 65 are different, how to change each may be determined in advance by performing simulation or experiment. In addition, you may have prepared the special tap for abnormal air conditioner generation | occurrence | production for wind speed change. In the above case, the special taps are, for example, taps of wind speed between "large" and "medium" and taps of wind speed between "medium" and "small".

(3-4) Change of Capability of Normal Air Conditioner The system control unit 30 performs control to increase the capability of the normal air conditioner in response to the occurrence of the abnormal air conditioner. For example, when the air conditioner 24 becomes the abnormal air conditioner 24, the capability of the normal air conditioners 21 to 23, 25 to 29 is increased. Here, to raise the capacity means to increase the operating frequency of the compressor and / or to increase the rotational speed of the common space fan. In order to increase the capacity of the normal air conditioners 21 to 23, 25 to 29, for example, even if all the operating frequencies of the compressors 41 to 43, 45 to 49 of the normal air conditioners 21 to 23, 25 to 29 are increased. Good. The normal air conditioners for raising the operating frequency may be limited to, for example, the compressors 41, 45, 47 of the normal air conditioners 21, 25, 27 near the abnormal air conditioner 24. In order to increase the capacity of the normal air conditioner, all the rotational speeds of the common space fans 51 to 53, 55 to 59 may be increased to increase the capacity of the normal air conditioner, for example, the abnormal air conditioner 24 It may be limited to the common space side fans 51, 55, 57 of the normal air conditioners 21, 25, 27 nearby.

  The system control unit 30 raises the capability by feed forward before a state change of the air conditioning target space such as a change in the room temperature of the room RM occurs. If the compressor 44 of the abnormal air conditioner 24 becomes immobile and the air conditioning capacity of the room RM of the air conditioning system 10 decreases, the room temperature of the room RM deviates from the set temperature with the passage of time, so Moreover, each apparatus control part 31-33, 35-39 raises the capability of each normal air conditioner 21-23, 25-29. However, waiting for the room temperature of the room RM to change in this way causes the user of the room RM to feel uncomfortable. Therefore, the system control unit 30 corrects the normal operation of the normal air conditioners 21 to 23 and 25 to 29 from the time when the occurrence of the abnormal air conditioner is detected, and the normal air conditioners 21 to 23 are corrected. , 25 to 29 is controlled to change the setting so as to be, for example, several% higher than the air conditioning capacity at the time of detecting the occurrence of the abnormal air conditioner.

(3-5) Specific Example of Control Flow In the air conditioning system 10, a specific example of a control flow in which the decrease in air conditioning capacity caused by the occurrence of an abnormal air conditioner is mitigated by the normal air conditioner will be described using FIG. The specific example of the control flow of the air conditioning system 10 described here is an example, and the technical scope of the present invention is not limited to this specific example. The system control unit 30 communicates with the device control units 31 to 39 of the nine air conditioners 21 to 29 of the same group shown in FIG. 2 to obtain information on the occurrence of the abnormal air conditioner (step S1).

  Next, the presence or absence of generation | occurrence | production of an abnormal air conditioner is judged based on the information obtained from the apparatus control parts 31-39 (step S2). If no abnormal air conditioner has been generated, the process returns to step S1, and steps S1 and S2 are repeated until generation of the abnormal air conditioner is detected, and the air conditioners 21 to 29 are monitored.

  When the occurrence of the abnormal air conditioner is detected ("Yes" in step S2), the system control unit 30 reads the position information of the air conditioners 21 to 29 from the memory 30b (step S3). The system control unit 30 recognizes the positional relationship between the abnormal air conditioner and the normal air conditioner based on the position information. Then, a normal air conditioner near the abnormal air conditioner is identified (step S4). Also, the position information includes data on the distance between the abnormal air conditioner and the normal air conditioner.

  Next, the system control unit 30 reads a predetermined selection condition from the memory 30b, and selects a normal air conditioner that copes with the occurrence of the abnormal air conditioner (step S5). Selection conditions are, for example, (a) Adjacent in any of east / west / north of abnormal air conditioner, (b) Prioritize one located east / west over north / south, (c) Normal air conditioner to be selected is The number of units is up to two, and (d) there is a normal air conditioner having a large temperature difference between the temperature detected by the temperature sensor 282 in the vicinity and the set temperature. In addition, selection conditions are suitably set and are not restricted to above-mentioned (a)-(d).

  For example, selection of a normal air conditioner performed according to the above (a) to (d) will be described for the case where the air conditioner 24 is an abnormal air conditioner. First, according to the condition (a), the north side normal air conditioner 27, the south side normal air conditioner 21, and the east side normal air conditioner 25 are selected. According to the condition (b), it is determined that the normal air conditioner 25 on the east side has priority over the normal air conditioner 27 on the north side and the normal air conditioner 21 on the south side. The normal air conditioner 25 on the east side is selected according to the condition (c), and the selection of the normal air conditioner 27 on the north side and the normal air conditioner 21 on the south side is performed according to the condition (d). For example, in the heating operation, the set temperatures are all 24 ° C., the detection temperature of the temperature sensor 282 of the air conditioner 21 is 23 ° C., and the detection temperature of the temperature sensor 282 of the air conditioner 27 is 22 ° C. The normal air conditioner 27 is selected according to the condition (d).

  The system control unit 30 causes the device control unit of the selected normal air conditioner to change to the abnormal mode at the time of occurrence of the abnormal air conditioner in order to change the wind speed and the wind direction of the selected normal air conditioner. At the same time, the position information of the abnormal air conditioner is transmitted (step S6). For example, when the normal air conditioners 25 and 27 are selected according to the selection example according to the above conditions (a) to (d), the device control units 35 and 37 change to the abnormal mode and the positional information of the abnormal air conditioner 24 Is transmitted from the system control unit 30.

  Each selected normal air conditioner changes the wind speed and the wind direction (step S7). For example, if the tap of the wind speed is "small" before the normal air conditioners 25 and 27 selected as described above are changed to the abnormal mode, the wind speed after the change to the abnormal mode While making the tap of "inside", the wind direction is raised by the louvers 75 and 77 of the normal air conditioner 25 and the normal air conditioner 27. The change of the wind speed and the wind direction at this time is performed based on the distance between the normal air conditioners 25 and 27 and the abnormal air conditioner 24.

  If the operation of the air conditioning system 10 is continued, the recovery of the abnormal air conditioner that can not move the compressor may end, or the abnormal air conditioner that a new compressor can not move may occur. Since there is, the process returns to step S1, and step S7 is repeated (step S8).

(4) Modifications (4-1) Modification 1A
In the above embodiment, although the case where the air conditioners 21 to 29 are separate types has been described, the air conditioner used in the air conditioning system 10 is an integrated air conditioner as shown in FIG. It is also good.

  Here, the air conditioner 21 is described as an example. The integrated air conditioner 21 of the modified example 1A is largely different from the separate type air conditioner 21 of the embodiment in that the first casing 301 and the second casing 302 in which the separate air conditioner 21 is separated into two The integrated air conditioner 21 divides the internal space of one casing 300 by a partition plate 310, as opposed to the one provided.

  In the casing 300 of the modification 1A, the internal space is divided into the air conditioning target space side area 320 and the common space side area 330 by the partition plate 310 disposed inside. On the bottom of the casing 300 exposed to the room RM, a room-side suction port 340 for taking in air from the room RM and a room-side outlet 350 for blowing air to the room RM are formed. In addition, on the top surface of the casing 300 exposed to the ceiling AT, there is a common space-side suction port 360 for taking in air from the ceiling AT and a common space-side outlet 370 for blowing air to the ceiling AT. It is formed.

  The common space side fan 51 and the air conditioning target space side fan 61 shown in FIG. 8 are, for example, cross flow fans. The air conditioner 21 shown in FIG. 4 includes the compressor 41, the space-side heat exchanger 210 for air conditioning, the common space-side heat exchanger 220, the four-way switching valve 240, in addition to the device control unit 31 described above. Although the expansion valve 250, the accumulator 260, the common space side fan 51, the air conditioning target space side fan 61, the louver 71, and the casing 300 are provided, although the air conditioner 21 of the modified example 1A also has a similar configuration, In FIG. 8 showing the air conditioner 21 of the modification 1A, the device control unit 31, the compressor 41, the four-way switching valve 240, the expansion valve 250, and the accumulator 260 are omitted. The louver 71 includes a vertical direction wind direction plate 71a and a horizontal direction wind direction plate 71b.

  Since there is only one room outlet 350 of the air conditioner 21 of the modification 1A, the possibility that the room outlet 350 of the air conditioner 21 opens toward the abnormal air conditioner is reduced. . However, since the louver 71 of the air conditioner 21 of the modified example 1A includes the vertical direction wind direction plate 71a and the horizontal direction wind direction plate 71b, by adjusting the wind direction in the horizontal direction, the air conditioner moves toward the abnormal air conditioner. Thus, the conditioned air can be blown out.

  An abnormal air conditioner was generated, assuming that the nine air conditioners 21 to 29 shown in FIG. 2 are integrated air conditioners and the room side air outlet 350 is opened in the north direction. The change of the wind direction will be described. A case is considered where the compressor 44 of the air conditioner 24 stops moving and becomes an abnormal air conditioner 24. Before the occurrence of the abnormal air conditioner 24, it is assumed that the horizontal direction wind direction plate 71b of the normal air conditioner 21 is adjusted to an angle such that the conditioned air is blown out toward the center (east) of the room RM. In such a case, when the abnormal air conditioner 24 is generated, for example, the horizontal direction wind direction plate 71b of the normal air conditioner 21 blows the conditioned air in the direction of the abnormal air conditioner 24 (toward the north). The angle is changed. Further, when the abnormal air conditioner 24 is generated, the blowing angle of the conditioned air may be changed, for example, upward by the vertical direction wind direction plate 71 a of the normal air conditioner 21. In addition, the vertical direction wind direction plate and the horizontal direction wind direction plate included in the louvers 72, 73, 75 to 79 of the air conditioners 22, 23, 25 to 29 other than the normal air conditioner 21 also generate the abnormal air conditioner 24. The angle may be changed to change the wind direction of the air conditioners 22, 23, 25-29.

(4-2) Modified Example 1B
Although the case where the system control unit 30 is provided outside the air conditioners 21 to 29 has been described in the above embodiment, the function of the system control unit 30 is provided to the parent device in the air conditioners 21 to 29. May be In that case, the sub-units other than the main unit in the air conditioners 21 to 29 and the main unit are grouped, and the air conditioners 21 to 29 become a plurality of in-group air conditioners that can communicate with each other May be configured. In this case, the system control unit 30 of the parent device identifies the abnormal air conditioner and the normal air conditioner among the plurality of group air conditioners by communication among the plurality of group air conditioners.

  Further, not the centralized control but the distributed control can also do the same as shown in FIG. In the distributed control, for example, three air conditioners 21 to 23 constituting the air conditioning system 10 are provided with device control units 410, 420, and 430 instead of the device control units 31 to 33. The device control units 410, 420, and 430 of the air conditioners 21 to 23 have the MPUs 411, 421, and 431, the memories 412, 422, and the same as the system control unit 30 includes the MPU 30a, the memory 30b, and the communication unit 30c. 432 and communication units 413, 423, and 433. That is, an assembly of the device control units 410, 420, and 430 functions as a system control unit. Therefore, the device control units 410, 420, and 430 are configured to be able to communicate with each other. For example, when the air conditioner 21 becomes an abnormal air conditioner, the abnormal air conditioner 21 issues an error code notification by the communication unit 413, and the air conditioners 22, 23 cause an error by the communication units 423, 433. Receive code Then, the normal air conditioners 22 and 23 use the MPUs 411 and 421 and the memories 412 and 422, and perform control that the system control unit 30 has performed using the MPU 30a and the memory 30b. When the air conditioner 21 becomes an abnormal air conditioner, for example, the normal air conditioner 22 changes the wind speed and / or the wind direction so as to compensate for the deterioration of the air conditioning function caused by the occurrence of the abnormal air conditioner 21. However, the normal air conditioner 23 does not perform such a change of the wind speed and / or the wind direction.

  Although only three air conditioners 21 to 23 are shown in FIG. 9, decentralized control is possible in the same manner with nine air conditioners 21 to 29 as shown in FIG. In this case, the air conditioners 21 to 29 are grouped, and the air conditioners 21 to 29 are configured to be a plurality of in-group air conditioners that can communicate with each other. Then, the system control unit, which is an assembly of the device control units of the air conditioners 21-29, transmits an abnormal air conditioner and a normal air among the plurality of group air conditioners by communication among the plurality of group air conditioners. Identify the harmonics.

(4-3) Modification 1C
Although the above embodiment has described the case where nine temperature sensors 282 provided with the room temperature of the room RM which is the air-conditioned space are used to detect the room temperature, the temperature sensor for detecting the room temperature is The number of air conditioners 21 to 29 is not limited to the same number, and may be more or less than the number of air conditioners. In addition, for example, a temperature sensor for an air conditioning target space representing the temperature sensor 282 of the air conditioners 21 to 29 may be provided at the center of the ceiling CE of the room RM. However, when the room temperature of the room RM is detected by one temperature sensor for space to be air conditioned, the temperature of the room RM is selected by selecting a normal air conditioner to compensate for the decrease in air conditioning capacity caused by the occurrence of the abnormal air conditioner. Not based on distribution.

(4-4) Modification 1D
Although the case where the set temperatures of all the air conditioners 21 to 29 are individually set has been described in the above embodiment, the set temperatures of all the air conditioners 21 to 29 are set to be the same. It may be done.

(4-5) Modification 1E
Although FIG. 4 illustrates a configuration in which heat transfer is performed between one common space side heat exchanger 220 and one air conditioning target space side heat exchanger 210 in one air conditioner 21. In one air conditioner 21, a plurality of first casings 301 and a plurality of devices accommodated therein are provided, and between one common space side heat exchanger 220 and a plurality of air conditioning target space side heat exchangers 210. May be configured to transfer heat. In that case, the plurality of first casings 301 are used for air conditioning of the same air conditioned space.

(4-6) Modification 1F
Although the case where both the wind direction and the wind speed were changed was demonstrated in the flowchart shown in FIG. 7, you may comprise so that any one of a wind direction and a wind speed may be changed.

(4-7) Modified Example 1G
The abnormal air conditioner can not move the compressor. However, when the air conditioning target space side fan can be moved, the abnormal air conditioner may be configured to drive the air conditioning target space side fan.

(5) Characteristics (5-1)
As described above, for example, when the abnormal air conditioner 24 is generated in the arrangement of FIG. 2, the system control unit 30 generates, for example, the wind direction and / or the wind speed of the normal air conditioners 21 and 25. When the abnormal air conditioner 24 stops and decreases from the normal air conditioners 21 and 25 at a point where the supply of conditioned air is reduced by the abnormal air conditioner 24 stopping by changing as compared to before More conditioned air can be supplied. As a result, it is possible to suppress the decrease in the air conditioning function of the air conditioning system 10 due to the occurrence of the abnormal air conditioner 24.

(5-2)
For example, when changing the wind direction of the normal air conditioners 21 and 25 when the abnormal air conditioner 24 is generated in the arrangement of FIG. 2, the wind direction of the normal air conditioners 21 and 25 is abnormal by the system control unit 30. The normal air conditioners 21 and 25 supply around the abnormal air conditioner 25 with more conditioned air than before the change. The change in which the normal air conditioners 21, 25 are directed upward is also a change for delivering a large amount of conditioned air to the abnormal air conditioner 24, and is a change in wind direction in which the wind is directed toward the abnormal air conditioner 24.

(5-3)
For example, the air conditioners 21 to 29 described with reference to FIGS. 4 to 6 have a plurality of room-side outlets 350a to 350d, so the surroundings of the abnormal air conditioner among the room-side outlets 350a to 350d. It is easy to supply conditioned air around the abnormal air conditioner by For example, if the air conditioner 25 is a normal air conditioner, if the air conditioner 22 becomes an abnormal air conditioner, the room side outlet 350b on the south side is used, and if the air conditioner 24 becomes an abnormal air conditioner, the west side If the air conditioner 26 becomes an abnormal air conditioner, the room side air outlet 350d is used, and if the air conditioner 28 becomes an abnormal air conditioner, the room side air outlet 350a of the north side. Can be used to cover degradation of the air conditioning function of the air conditioning system 10 due to the occurrence of the abnormal air conditioner.

(5-4)
For example, when the abnormal air conditioner 24 is generated in the arrangement of FIG. 2 based on the position information stored in the memory 30b of the system control unit 30, the normal air conditioner 21, near the abnormal air conditioner 24, By changing the wind direction and / or the wind speed of 25, 27, the wind direction and / or the wind speed can be changed so as to effectively compensate the air conditioning function around the abnormal air conditioner 24. In addition, since position information for specifying the positions of the air conditioners 21 to 29 in the room RM, which is an air conditioning target space, can be set in the system control unit 30 from the remote controller via the communication unit 30c, for example, By setting the position information in the system control unit 30 at the time of initial setting performed when 21 to 29 are installed, it is possible to cope with how the air conditioners 21 to 29 are arranged. For example, even if the room RM has a triangular shape in a plan view and it is difficult to arrange in a grid shape as shown in FIG. As a result, deterioration of the air conditioning function can be effectively suppressed, and the freedom of arrangement of the air conditioners 21 to 29 to which the air conditioning system 10 can be applied is improved, and the air conditioning system 10 becomes easy to use. .

(5-5)
For example, assuming that the abnormal air conditioner 24 is generated in the arrangement of FIG. 2, a method of changing the wind direction and / or the wind speed of one or more normal air conditioners 21, 25, 27 near the abnormal air conditioner 24. However, it is easier to bring out the suppression effect of the deterioration of the air conditioning function around the abnormal air conditioner 24 than changing the wind direction and / or the wind speed of the normal air conditioners 23, 29 which are far, for example. Thus, by changing the wind direction and / or the wind speed of one or more normal air conditioners near the abnormal air conditioner, it is effective to suppress the deterioration of the air conditioning function when the abnormal air conditioner is generated. Can be done.

(5-6)
The system control unit 30 recognizes the distance from the abnormal air conditioner to the normal air conditioner based on the position information read from the memory 30b. For example, when the normal air conditioner 21 or the normal air conditioner 25 compensates for the decrease in air conditioning capacity caused by the occurrence of the abnormal air conditioner 24 when the abnormal air conditioner 24 occurs, the normal air from the abnormal air conditioner 24 Assuming that the distance to the conditioner 21 is shorter than the distance from the abnormal air conditioner 24 to the normal air conditioner 25, changing the wind speed and / or the wind direction in the same way compensates for the air conditioning capacity due to the difference in distance. There is a difference. Therefore, the system control unit 30 sets an appropriate change in the wind speed and / or the wind direction according to the distance so that the compensation function of one air conditioning capacity is not reduced due to the difference in the distance. By setting in this manner, it is possible to effectively suppress the deterioration of the air conditioning function when the abnormal air conditioner is generated.

(5-7)
The system control unit 30 can regard the air conditioners 21 to 29 as a plurality of in-group air conditioners and can be regarded as mediating communication between the in-group air conditioners. As a result, the abnormal air conditioner and the normal air conditioner can be identified among the plurality of in-group air conditioners. For example, when reducing the air conditioner 25 among the air conditioners 21 to 29 currently grouped, the content of the memory 30 b of the system control unit 30 is rewritten via the communication unit 30 c using a remote controller, etc. With a simple operation of setting only the group B, it is possible to appropriately suppress the deterioration of the air conditioning function due to the occurrence of the abnormal air conditioner. For example, when the abnormal air conditioner 24 is generated in the arrangement of FIG. 2, the system control unit 30 recognizes that the air conditioner 25 is removed by the contents of the memory 30b, and normal air conditioning is performed instead of the air conditioner 25. It is possible to suppress the deterioration of the air conditioning function due to the occurrence of the abnormal air conditioner 24 using the machines 21 and 27.

  Similarly, when an air conditioner is newly added to the air conditioning target space, the simple operation of only setting the group, such as rewriting the contents of the memory 30b of the system control unit 30, is caused due to the occurrence of the abnormal air conditioner. It becomes possible to appropriately suppress the deterioration of the air conditioning function. For example, if an additional air conditioner (disposed on the west side of the abnormal air conditioner 24) is added to the currently grouped air conditioners 21 to 29 to create a new group, when the abnormal air conditioner 24 occurs, The system control unit 30 recognizes from the contents of the memory 30b that the additional air conditioner is added, and generates the abnormal air conditioner 24 using the normal air conditioners 21, 25, 27 and the additional air conditioner. It can suppress that an air conditioning function falls as a result.

  As described above, even when an air conditioner is newly added to the room RM or the currently grouped air conditioners 21 to 29 are reduced, the simple operation of setting only the group, It becomes possible to appropriately suppress the deterioration of the air conditioning function due to the occurrence of the abnormal air conditioner, and it becomes easy to add / reduce the air conditioner.

(5-8)
If the system control unit 30 is configured to be able to perform control to increase the capacity of the normal air conditioner in response to the occurrence of the abnormal air conditioner, the state of the room RM along with the occurrence of the abnormal air conditioner It can control that feedforward control changes to the direction of the unpleasant state. For example, deviation of the room temperature of the room RM from the set temperature can be alleviated, and the user's discomfort caused by the occurrence of the abnormal air conditioner can be alleviated.

DESCRIPTION OF REFERENCE NUMERALS 10 air conditioning system 21 to 29 air conditioner 30 system control unit 31 to 39 device control unit 41 to 49 compressor 51 to 59 common space side fan 61 to 69 air conditioning target space side fan 71 to 79 louver 210 air conditioning target space side heat Exchanger (example of user side heat exchanger)
220 Common space side heat exchanger (example of heat source side heat exchanger)
350, 350a to 350d Room side outlet 410, 420, 430 Equipment control unit

Japanese Patent Application Laid-Open No. 48-2756

Claims (8)

An air conditioning system (10) that performs heat exchange with air in a common space other than the air conditioning target disposed in the room around the air conditioning target space to air-condition one indoor air conditioning target space And
Use side heat exchanger (210) performing heat exchange between the air in the air conditioning target space and the refrigerant, heat source side heat exchanger (220) performing heat exchange between the air in the common space and the refrigerant, and the use side heat exchanger And a plurality of air conditioners (21 to 29) having compressors (41 to 49) for compressing the refrigerant circulating in the heat source side heat exchanger,
It is configured to be able to detect that an abnormal air conditioner that is in a state in which the compressor can not be moved is generated among the plurality of air conditioners, and when the abnormal air conditioner is generated, the abnormal air conditioner An air conditioning system further comprising a system control unit (30, 410, 420, 430) for performing control to change the wind direction and / or the wind speed of the normal air conditioners other than those before the abnormal air conditioner generates. When the abnormal air conditioner is generated, the system control unit performs control to direct the wind direction of the normal air conditioner toward the abnormal air conditioner as compared to before the abnormal air conditioner is generated.
The air conditioning system according to claim 1. The plurality of air conditioners are respectively installed on the ceiling of the space to be air-conditioned and have a plurality of outlets (350 a to 350 d) so that conditioned air can be blown out in a plurality of directions simultaneously from the plurality of outlets. It is configured,
The air conditioning system according to claim 1 or 2. The system control unit is configured to be capable of setting position information for specifying the positions of the plurality of air conditioners in the air conditioning target space, and based on the position information, the normal air conditioner other than the abnormal air conditioner Control to change the wind direction and / or the wind speed of the air conditioner compared to that before the abnormal air conditioner generates
The air conditioning system according to any one of claims 1 to 3. The system control unit changes the wind direction and / or the wind speed of one or more normal air conditioners near the abnormal air conditioner.
The air conditioning system according to claim 4. The system control unit changes the wind direction and / or the wind speed of the normal air conditioner according to the distance from the abnormal air conditioner to the normal air conditioner.
The air conditioning system according to claim 4 or 5. The plurality of air conditioners include a plurality of in-group air conditioners that can be grouped and communicated with each other,
The system control unit identifies the abnormal air conditioner and the normal air conditioner among the plurality of in-group air conditioners by communication between the plurality of in-group air conditioners.
The air conditioning system according to any one of claims 1 to 6. The system control unit performs control to increase the capacity of the normal air conditioner in response to the occurrence of the abnormal air conditioner.
The air conditioning system according to any one of claims 1 to 7.

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