JP2018096602A - Air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system capable of efficiently sharing air in an indoor common space out of air-conditioning at a plurality of air conditioners on the purpose of heat exchange, to thereby suppress energy consumption in the whole system.SOLUTION: An air-conditioned space side heat exchange unit 65b of a plurality of air conditioners 21-29 communicates with a room RM as an air-conditioned space, and is configured to perform heat exchange with air in the room RM. A common space side heat exchange unit 65c communicates with an attic AT as a common space, and is configured to transmit heat between itself and the air-conditioned space side heat exchange unit 65b. A common space side fan 63 of the common space side heat exchange unit 65c is configured to flow air suctioned from the attic AT to the common space side heat exchange unit 65c to blow it to the attic AT. Direction of air blown to the attic AT by the common space side fan 63 can be changed.SELECTED DRAWING: Figure 4

Description

  The present invention performs heat exchange with air in a common space outside an air-conditioning target that is arranged indoors around the air-conditioning target space in order to perform air conditioning of the air-conditioning target space inside the air-conditioning system. It relates to an air conditioning system.

  2. Description of the Related Art Conventionally, an air conditioning system using a plurality of integrated air conditioners that perform air conditioning by utilizing a common indoor space such as a ceiling or the like that is not air-conditioned has been proposed. For example, in an integrated air conditioner described in Patent Document 1 (Japanese Patent Laid-Open No. 2001-173991), both a condenser and an evaporator for performing a refrigeration cycle are arranged indoors, particularly near the ceiling. . Common space air is used for heat exchange by a plurality of condensers or evaporators. And the air of this common space is replaced by ventilation.

  However, in the ventilation method described in Patent Document 1, the heat exchange efficiency may decrease due to the influence of the exhaust heat of the surrounding integrated air conditioner.

  An object of the present invention is to provide an air conditioning system that can efficiently share the air in an indoor common space that is not subject to air conditioning with a plurality of air conditioners for efficient heat exchange and suppress energy consumption of the entire system. That is.

  The air conditioning system according to the first aspect of the present invention heats between air in a common space outside the air-conditioning target that is arranged indoors around the air-conditioning target space in order to air-condition the indoor air-conditioning target space. An air conditioning system including a plurality of air conditioners that perform exchange, wherein at least some of the plurality of air conditioners communicate with the air conditioning target space and perform heat exchange with air in the air conditioning target space side The heat exchange unit and the common space side heat exchange unit that communicates with the common space and transfers heat between the air conditioning target space side heat exchange unit and the air taken from the common space into the common space side heat exchange unit A common space-side fan that flows and blows into the common space, and is configured to change the direction of the air blown into the common space by the common space-side fan.

  According to the air conditioning system according to the first aspect, the direction of the air that is heat-exchanged in the common space-side heat exchange section and blown into the common space by the common space-side fan can be changed, so that heat can be exchanged efficiently. The air after heat exchange can be blown out in the direction.

  An air conditioning system according to a second aspect of the present invention is the air conditioning system according to the first aspect, wherein the common space side heat exchange unit is blown out from the common space side fan by switching the ventilation path of the common space side heat exchange unit. It has the ventilation path switching device which changes the blowing direction of air.

  According to the air conditioning system which concerns on a 2nd viewpoint, since the blowing direction of air is changed with a ventilation path switching device, the location and direction which blow off with respect to a common space from an air conditioner are limited reliably, and the blowing direction is changed. The structure which can do is realizable.

  An air conditioning system according to a third aspect of the present invention is the air conditioning system according to the second aspect, wherein the ventilation path switching device includes a shutter, and changes a blowing direction of air blown from the common space side fan by opening and closing the shutter. To do.

  According to the air conditioning system concerning the 3rd viewpoint, since the change of the blowing direction in the ventilation path switching device is realized by opening and closing the shutter, the ventilation path switching device can be configured at low cost.

  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 to third aspects, wherein the common space side heat exchange section is a blower through which air blown from the common space side fan passes. An outlet, a wind direction changing plate provided at the outlet, and a wind direction changing plate driving device that drives the wind direction changing plate to change the blowing direction of the air blown from the common space side fan.

  According to the air conditioning system according to the fourth aspect, since the change of the blowing direction from the common space side heat exchange part of each air conditioner is realized by the wind direction changing plate driving device that drives the wind direction changing plate, The structure which can restrict | limit the direction which blows off from an air conditioner to a common space reliably, and can change a blowing direction is realizable.

  In the air conditioning system according to the fifth aspect of the present invention, in the air conditioning system according to any one of the first to fourth aspects, the common space side heat exchange unit changes the direction of the air blown into the common space to the common space side. It is configured so that it can be changed in at least two directions with different angles of 90 degrees or more around the heat exchange section.

  According to the air conditioning system according to the fifth aspect, the direction of the air blown into the common space can be changed to at least two directions having an angle of 90 degrees or more around the common space side heat exchange section. Even if the heat exchange units are arranged in a matrix in the common space, it is possible to increase the number of cases where there are blowing directions that can improve the efficiency of the entire air conditioning system.

  An air conditioning system according to a sixth aspect of the present invention is the air conditioning system according to the fifth aspect, wherein the common space side heat exchanging unit changes the direction of the air blown into the common space from any of the four directions of the common space side heat exchanging unit. It is configured so that it can also be changed.

  According to the air conditioning system according to the sixth aspect, since the direction of the air blown into the common space can be changed to any one of the four directions of the common space side heat exchange unit, the blowing direction that can improve the efficiency of the entire air conditioning system is achieved. The number of existing cases can be further increased.

  An air conditioning system according to a seventh aspect of the present invention is the air conditioning system according to the fifth aspect, wherein the common space side heat exchanging unit is configured to change the direction of the air blown into the common space around the common space side heat exchanging unit. The angle is configured so that the angle can be changed in two different directions.

  According to the air conditioning system according to the seventh aspect, since the direction of the air blown into the common space can be changed to two directions having different angles of 180 degrees around the common space side heat exchange section, the air is directed in the opposite direction. Therefore, it becomes easy to create an air flow that can be efficiently shared by greatly changing the air flow path in the common space.

  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 to seventh aspects, wherein the common space side heat exchange unit operates the direction of the air blown into the common space. It is comprised so that it can change and avoid the direction of the adjacent common space side heat exchange part.

  According to the air conditioning system according to the eighth aspect, the direction of the air blown into the common space can be changed while avoiding the direction of the adjacent common space side heat exchanging part in operation. When the exchange unit performs the same exhaust heat, for example, when both are performing cooling operation or both are performing heating operation, the temperature around the adjacent common space side heat exchange unit due to its own exhaust heat Can be prevented from changing in the direction in which the efficiency of heat exchange deteriorates.

  The air conditioning system which concerns on the 9th viewpoint of this invention is the air conditioning system in any one of the 1st viewpoint to the 8th viewpoint, The blowing direction which sets the direction of the air blown off into a common space by the several common space side fan The apparatus further includes a setting unit.

  According to the air conditioning system according to the ninth aspect, since the direction of the air blown from the plurality of common space side fans of the air conditioning system can be set by the blowing direction setting unit, it is set by using the blowing direction setting unit. it can.

  The air conditioning system according to a tenth aspect of the present invention is the air conditioning system according to the ninth aspect, wherein the blowing direction setting unit is a direction of air blown from the plurality of common space side heat exchange units and the common space side heat exchange unit. Having a map screen for displaying and setting.

  According to the air conditioning system which concerns on a 10th viewpoint, it can set, confirming the direction of the air blown off from a some common space side heat exchange part and a common space side heat exchange part seeing a map screen.

  In the air conditioning system according to the first aspect of the present invention, the energy in the entire system can be suppressed by efficiently sharing the air in the common space for heat exchange with a plurality of air conditioners.

  In the air conditioning system according to the second aspect or the fourth aspect of the present invention, it is possible to easily realize a configuration in which air in a common space can be efficiently shared for heat exchange by a plurality of air conditioners.

  In the air conditioning system which concerns on the 3rd viewpoint of this invention, the structure which can share efficiently the air of a common space for heat exchange with a some air conditioner is realizable at low cost.

  In the air conditioning system according to the fifth aspect, the sixth aspect, or the seventh aspect of the present invention, the energy consumption of the entire system can be suppressed by efficiently sharing in many situations.

  In the air conditioning system according to the eighth aspect of the present invention, the heat exchange efficiency of the adjacent common space side heat exchange unit is reduced by blowing the air after heat exchange to the adjacent common space side heat exchange unit. Can be prevented.

  In the air conditioning system according to the ninth aspect of the present invention, the setting work can be saved as the number of setting target common space fans increases.

  In the air conditioning system according to the tenth aspect of the present invention, the convenience of setting the direction of the blown air is improved.

The typical sectional view of the building where the air harmony system concerning an embodiment was installed. The typical top view of the building where the air harmony system concerning an embodiment was installed. The block diagram which shows an example of a structure of the air conditioning system which concerns on embodiment. A typical sectional view of an integrated air harmony machine which constitutes an air harmony system. The circuit diagram which shows an example of the refrigerant circuit of the air conditioner of FIG. The schematic diagram for demonstrating a ventilation path switching apparatus. The flowchart which shows an example of operation | movement of the air conditioning system of embodiment. The fragmentary sectional view for demonstrating the other example of the ventilation path switching apparatus. The schematic diagram for demonstrating the further another example of a ventilation path switching apparatus. A typical sectional view of an air harmony machine for explaining an example of a wind direction change board drive. (A) The perspective view for demonstrating the other example of a wind direction change board drive device, (b) The perspective view which shows the state after rotating the wind direction change board of Fig.11 (a). The perspective view for demonstrating the apparatus for changing the blowing direction. The typical sectional view of a separate type air harmony machine.

<Embodiment>
(1) Whole structure The air conditioning system which concerns on one Embodiment of this invention is demonstrated using FIG.1 and FIG.2. The air conditioning system 10 shown in FIG. 1 and FIG. 2 is a common outside air-conditioning target that is arranged in the indoor 98 around the room RM in order to air-condition the room RM that is the air-conditioning target space in the indoor 98. Heat exchange is performed with air in the ceiling AT, which is a space. Although the case where there is one room RM has been described here, the present invention can also be applied to a case where a plurality of rooms are air-conditioned by the air conditioning system 10. Moreover, it is one continuous common space that the air conditioning system 10 demonstrated here controls the path | route of air. However, for example, the air paths of a plurality of independent common spaces such as the first floor of the building and the second floor of the ceiling may be controlled by one air conditioning system according to the present invention. .

  The air conditioning system 10 shown in FIG. 1 includes a plurality of integrated air conditioners 21 to 29 and a controller 30. FIG. 3 shows an outline of the relationship between the controller 30 and other components of the air conditioning system 10. The nine integrated air conditioners 21 to 29 described above are all controlled by the controller 30. The air conditioning system 10 is configured such that the controller 30 can change the direction of the air blown into the common space by a common space side fan 63 (see FIG. 4) described later.

(2) Detailed configuration (2-1) Integrated air conditioners 21-29
The integrated air conditioners 21 to 29 can be devices having different structures from each other, but here, description will be made assuming that they are all composed of devices having the same structure. Therefore, the air conditioner 21 will be described as an example of all the integrated air conditioners 21 to 29 with reference to FIGS. 4 and 5. The air conditioner 21 is provided between the air conditioning target space side heat exchanger 65b including the air conditioning target space side heat exchanger 61 that performs heat exchange with the air of the room RM that is the air conditioning target space, and the air conditioning target space side heat exchanger 61. The common space side heat exchanger 65c including the common space side heat exchanger 62 in which heat is transferred in the air, and the air taken from the ceiling back AT flow to the common space side heat exchanger 65c including the common space side heat exchanger 62. The common space side fan 63 to be blown out to the ceiling AT again, the air conditioning target space side fan 64 to flow the air taken in from the room RM to the air conditioning target space side heat exchanger 61 and blown again to the room RM, and the casing 65. doing. As with the air conditioner 21, the other integrated air conditioners 22 to 29 are also the air-conditioning target space-side heat exchanger 61, the common space-side heat exchanger 62, the common space-side fan 63, and the air-conditioning target space-side fan. 64 is provided inside each casing 65. Therefore, the plurality of common space side heat exchangers 62 of the air conditioners 22 to 29 can share the air in the ceiling AT that is the common space.

  The air-conditioning target space-side heat exchanger 61 and the common space-side heat exchanger 62 include, for example, air passing between a large number of fins (not shown) and a plurality of heat transfer tubes (not shown) penetrating the fins. A fin-and-tube heat exchanger that performs heat exchange with the refrigerant flowing through the inside can be used for each. Heat is transferred between the air-conditioning target space-side heat exchanger 61 and the common space-side heat exchanger 62 by the refrigerant flowing through the refrigerant circuit 60 shown in FIG.

  As the common space side fan 63 and the air conditioning target space side fan 64, for example, a centrifugal blower, an axial flow blower, or a cross flow blower (cross flow fan) can be used. The common space side fan 63 and the air conditioning target space side fan 64 shown in FIG. 4 are cross flow fans. The common space-side fan 63 and the air-conditioning target space-side fan 64 shown here are configured such that the rotation speeds of the common space-side fan 63 and the air-conditioning target space-side fan 64 can be independently changed. Therefore, the controller 30 sets the common space-side air flow rate and the air-conditioning target space-side air flow rate flowing from the air conditioner 21 to the air conditioner 29 to the common space-side fan 63 and the air-conditioning target space-side fan 64 with the common space side and air-conditioning. It is possible to independently control separately on the target space side, and it is possible to independently control the air conditioners 21 to 29 independently.

  The internal space of the casing 65 of the air conditioner 21 is divided into an air-conditioning target space-side heat exchanging portion 65b and a common space-side heat exchanging portion 65c by a partition plate 65a disposed inside. As illustrated in FIG. 4, the air-conditioning target space side heat exchanger 65 b includes an air-conditioning target space-side heat exchanger 61. Further, the common space side heat exchanger 65c includes a common space side heat exchanger 62. On the side surface of the casing 65 exposed to the room RM, a room side air inlet 65d for taking in air from the room RM and a room side air outlet 65e for blowing air into the room RM are formed.

  Further, on the side surface of the casing 65 exposed to the ceiling back AT, a common space side air inlet 65f for taking air from the ceiling back AT and four common space side outlets 51 for blowing air to the ceiling AT. To 54 (see FIG. 6) are formed. FIG. 6 schematically shows the situation around the common space-side outlets 51 to 54 of the casing 65. The common space side air outlets 51 to 54 are arranged on four sides of the casing 65. These four sides are, for example, front, rear, left and right of the casing 65. If the ventilation fan 46 of the building 90 in FIG. 1 is set on the north side, for example, the common space side outlet 51 faces east, the common space side outlet 52 faces north, and the common space side The air outlet 53 faces west, and the common space side air outlet 54 faces south. Shutters 81 to 84 are provided at the common space side outlets 51 to 54, respectively. The air conditioner 21 is configured to be able to open and close the common space-side outlets 51 to 54 by shutters 81 to 84, respectively. The shutters 81 to 84 are, for example, electric shutters, and the opening / closing of the shutters 81 to 84 is controlled by the control unit 21 a of the air conditioner 21. Therefore, the controller 30 can control the opening and closing of the shutters 81 to 84 via the control unit 21a. As shown in FIG. 3, the opening / closing of the shutters 81 to 84 of the air conditioners 22 to 29 is controlled by the control units 22 a to 29 a of the air conditioners 22 to 29, respectively. Therefore, also about the air conditioners 22-29, the controller 30 can control opening / closing of the shutters 81-84 of all the air conditioners 22-29 via the control parts 22a-29a. These shutters 81 to 84 shown in FIG. 6 constitute a ventilation path switching device 80 that switches the ventilation path connected to the common space side outlets 51 to 54.

  FIG. 5 shows an example of the refrigerant circuit 60. The refrigerant circuit 60 is configured by connecting a compressor 66, a four-way switching valve 67, a common space side heat exchanger 62, an expansion mechanism 68, an air conditioning target space side heat exchanger 61, and an accumulator 69 through a refrigerant pipe 60a. . During the cooling operation, the four-way switching valve 67 is connected in a solid line, and the refrigerant discharged from the compressor 66 flows to the common space side heat exchanger 62 via the four-way switching valve 67. The refrigerant cooled by heat exchange with the air behind the ceiling AT in the common space side heat exchanger 62 is expanded by the expansion mechanism 68 and flows to the air conditioning target space side heat exchanger 61. The refrigerant heated in the air conditioning target space side heat exchanger 61 by heat exchange with the air in the room RM is sucked into the compressor 66 through the four-way switching valve 67 and the accumulator 69. During the heating operation, the four-way switching valve 67 is connected in a broken line, and the refrigerant discharged from the compressor 66 flows to the air-conditioning target space side heat exchanger 61 through the four-way switching valve 67. The refrigerant cooled by heat exchange with the air in the room RM in the air-conditioning target space-side heat exchanger 61 is expanded by the expansion mechanism 68 and flows to the common space-side heat exchanger 62. The refrigerant heated by heat exchange with the air in the ceiling AT in the common space side heat exchanger 62 is sucked into the compressor 66 through the four-way switching valve 67 and the accumulator 69.

  The air conditioner 21 includes temperature sensors 71 to 76 for control. The temperature sensor 71 detects the temperature of the air in the ceiling AT before the heat is exchanged in the common space side heat exchanger 62. The temperature sensor 72 detects the temperature of the air in the room RM before heat exchange is performed in the air conditioning target space-side heat exchanger 61. The temperature sensor 73 detects the temperature of the refrigerant at the entrance / exit of the air conditioning target space-side heat exchanger 61 between the expansion mechanism 68 and the air-conditioning target space-side heat exchanger 61. The temperature sensor 74 detects the temperature of the refrigerant at the inlet / outlet of the common space side heat exchanger 62 between the expansion mechanism 68 and the common space side heat exchanger 62. The temperature sensor 75 detects the temperature of the refrigerant sucked into the compressor 66 between the accumulator 69 and the compressor 66. The temperature sensor 76 detects the temperature of the refrigerant discharged from the compressor 66 between the compressor 66 and the four-way switching valve 67. The air conditioner 21 is controlled using these temperature sensors 71 to 76 so that, for example, the superheat degree of the refrigerant sucked into the compressor 66 falls within a predetermined range. Further, the temperature of the refrigerant discharged from the compressor 66 is controlled to be a predetermined value or less. In the refrigerant circuit 60 of the air conditioner 21, a refrigeration cycle, particularly a vapor compression refrigeration cycle is performed. The compressor 66 is configured such that the capacity can be changed by changing the rotation speed (operation frequency). For example, the air conditioners 21 to 29 can cope with the processing load by adjusting the rotation speed of the compressor 66, the rotation speed of the common space side fan 63, and the rotation speed of the air conditioning target space side fan 64.

(2-2) Exhaust port 43 and intake port 44
The exhaust port 43 is formed in the north wall 91 of the building 90. The air inlet 44 is formed in the east wall 92 of the building 90. The north wall 91 and the east wall 92 are boundaries provided between the indoor 98 and the outdoor 99 that are inside the building 90. Air is ventilated between the outdoor 99 and the ceiling back AT through the exhaust port 43 and the intake port 44. Here, the exhaust port 43 and the intake port 44 are formed in the north wall 91 and the east wall 92, but the locations where the exhaust port 43 and the intake port 44 are formed are not limited to the north and the east. The place where the exhaust port 43 and the intake port 44 are formed may be, for example, north and south, southeast and southwest, or east and west of the same north wall.

(2-3) Ventilation fan 46
As the ventilation fan 46, for example, a centrifugal blower, an axial flow blower, or a cross flow blower can be used. The ventilation fan 46 shown in FIG. 2 is an axial flow fan. The ventilation fan 46 is an exhaust fan attached to the exhaust port 43. Although the case where the ventilation fan 46 is an exhaust fan will be described here, the ventilation fan 46 may be an intake fan. The ventilation fan 46 may be a fan configured to be able to switch between intake and exhaust.

(2-4) Controller 30
As shown in FIG. 3, the controller 30 includes a microprocessing unit (MPU) 31, a memory 32, and a clock 33. The controller 30 is connected to each control part 21a-29a of the air conditioners 21-29. Information related to the operating state of the air conditioners 21 to 29 is transmitted from the control units 21 a to 29 a to the controller 30. Therefore, the controller 30 can detect whether or not the air conditioners 21 to 29 are respectively operated. In addition, a signal for controlling opening and closing of the shutters 81 to 84 of the air conditioners 21 to 29 is transmitted from the controller 30 to the control units 21 a to 29 a. The controller 30 is also connected to the ventilation fan 46. The controller 30 transmits a signal for switching the ventilation fan 46 on and off. Furthermore, the controller 30 is configured to be able to communicate with the blowing direction setting unit 150.

  The memory 32 of the controller 30 stores, for example, a program for controlling the operation of the air conditioning system 10 according to an embodiment described later. The MPU 31 transmits a command to the control units 21a to 29a in accordance with a program stored in the memory 32. Here, a case where the controller 30 is installed inside the building 90 will be described. However, the controller 30 may be installed outside the building 90, and the storage function and the processing function of the controller 30 are provided in different places. It may be done.

(2-5) Blowing direction setting unit 150
By the blowing direction setting part 150 with which the air conditioning system 10 is provided, it is comprised so that the direction of the air blown off to ceiling back AT by the common space side fan 63 of the some air conditioners 21-29 can be set. . The blow direction setting unit 150 is a map screen for displaying and setting the direction of air blown from the plurality of common space side heat exchange units 65c and the common space side heat exchange unit 65c of the plurality of air conditioners 21 to 29. 151. For the blowing direction setting unit 150, for example, a mobile computer or a smartphone can be used. The blowing direction setting unit 150 is configured to be able to plot a plurality of common space side heat exchange units 65c on the map screen 151. For example, the matrix arrangement of the air conditioners 21 to 29 as shown in FIG. 2 is displayed on the map screen 151. And a user sets the air conditioners 21-29, confirming the direction of the air blown off from the some common space side heat exchange part 65c and the common space side heat exchange part 65c seeing the map screen 151. Can do.

(3) Overall operation (3-1) Outline By the driving of the ventilation fan 46 shown in FIG. 1, the airflow blown out from the ceiling AT shown by the arrow AR1 in FIG. Will occur. With the generation of the airflow indicated by the arrow AR1, the ceiling AT becomes negative pressure, and an airflow (airflow indicated by the arrow AR2) flowing from the outdoor 99 through the air inlet 44 to the ceiling AT is generated. As a result, in the ceiling AT, an air flow (air flow indicated by an arrow AR3) from the intake port 44 toward the exhaust port 43 is generated. The ventilation fan 46 is ON / OFF controlled by the controller 30.

  In addition, the location where the exhaust port 43 and the intake port 44 are provided may be limited due to the structure of the building 90 and the environment around the building 90. Moreover, the air conditioners 21-29 may have to be installed later on the existing building 90 in which the exhaust port 43 and the intake port 44 are already formed. In these cases, it is not always possible to set an optimal air path in the ceiling AT. For example, the exhaust port 43 and the intake port 44 can be provided only on the north wall 91 and the east wall 92 shown in FIG. In the southwest, the air flow may become weak or stagnation may occur. If the air flow becomes weak or stagnation occurs, insufficient ventilation will occur, and undesirable temperature changes will occur in places where ventilation is insufficient (temperature increases during cooling operation, temperature decreases during heating operation). . For example, the air conditioner 23 having the common space-side heat exchanger 62 that must exchange heat using air in such a poorly ventilated place has a straight air line that connects the exhaust port 43 and the intake port 44. Compared to the conditioner 27, the heat exchange efficiency tends to deteriorate.

  Furthermore, the air conditioners 21 to 29 arranged in the ceiling back AT may be blown with air after being heat-exchanged by the common space side heat exchanger 62 that blows out from the ceiling AT. For example, if the air after heat exchange in the common space side heat exchanger 62 is blown toward the north from the air conditioner 22 arranged in the south of the air conditioner 21 during the cooling operation, the air conditioner Warm air heat-exchanged by the common space side heat exchanger 62 of the air conditioner 22 is supplied to the 21 common space side heat exchanger 62. Thus, when warm air is supplied from the air conditioner 22 to the common space side heat exchanger 62 of the air conditioner 21 during the cooling operation, the heat exchange efficiency of the air conditioner 21 is reduced. Therefore, in such a case, the air conditioner 22 is supplied with warm air heat-exchanged by the common space side heat exchanger 62 of the air conditioner 22 to the common space side heat exchanger 62 of the air conditioner 21. The air after the heat exchange in the common space side heat exchanger 62 is blown out in a direction that can suppress the decrease in the heat exchange efficiency due to the heat. Therefore, the air conditioning system 10 changes the blowing direction of the air blown from the common space side fan 63 of the air conditioner 22 to the ceiling AT.

  A change in the direction of the air blown to the ceiling AT in the air conditioning system 10 will be described along the flow of FIG. The controller 30 of the air conditioning system 10 acquires, for example, data relating to the operating state of the air conditioners 21 to 29 stored in the memory 32 and the direction of air blown out to the ceiling AT (step S1). For example, the air conditioners 21 to 29 have different ON / OFF settings, set temperatures, and temperatures of air sucked from the room RM, and therefore may be operated or stopped. Therefore, data indicating in which direction the air blown from the common space side fan 63 is directed in accordance with the arrangement pattern of the air conditioners 21 to 29 being operated is prepared in advance. For example, if the state of the building 90, the number of air conditioners, and the arrangement position of the air conditioners are different, the air blown from the common space side fan 63 is the same even if the arrangement patterns of the operated air conditioners 21 to 29 are the same. Since the direction to be directed is different, data regarding the operating state and the blowing direction is prepared for each air conditioning system 10.

  Next, the controller 30 obtains data relating to the actual operation of the air conditioners 21 to 29, specifically, data indicating whether the air conditioners are being operated or stopped from the control units 21 a to 29 a of the air conditioners 21 to 29 in advance. Obtained at set intervals (step S2). For example, the controller 30 detects the interval by counting the clock 33. In the controller 30, the controller 30 determines a change in the operating state from the acquired operating state of the air conditioners 21 to 29 (step S3). By the end of the interval, if there is no newly started or stopped air conditioner and there is no change in the operating state, the controller 30 maintains the air conditioning capacity of each of the air conditioners 21 to 29 as it is. (Step S4), the process proceeds to the next Step S6. If a change occurs in the operation state by the end of the interval, the controller 30 adjusts the air conditioning capability of each of the air conditioners 21 to 29 according to the arrangement pattern of the newly operated air conditioners 21 to 29 ( Step S5), the process proceeds to the next step S6. For example, if the air conditioner ahead of the blowing direction starts operation, the air blown from the common space side fan 63 is directed to a place different from the position where the air conditioner is arranged. In step S6, the controller 30 determines whether or not to stop the operation of the air conditioning system 10. When the operation is continued, the controller 30 returns to step S2, and when the operation is stopped, the air conditioners 21 to 29 are stopped. Steps S1 to S6, which are operations for adjusting the air conditioning capability, are terminated.

(3-2) Specific example of change of direction of air Like the air conditioner 21 shown in FIGS. 1 and 2, the direction in which the adjacent air conditioners 22 and 24 are present and the direction in which there is no air conditioner If there is, blow out in the direction where there is no air conditioner. For this purpose, the controller 30 transmits a command to the control unit 21a so as to open the shutter 82 for the common space side outlet 52 of the air conditioner 21 shown in FIG. In the case of the air conditioner 21 shown in FIG. 2, since there is no other air conditioner not only on the north side but also on the west side, it may be possible to open the common space side outlet 53 on the west side. . However, in this case, if the shutter 83 of the common space side outlet 53 is opened and the air from the common space side fan 63 is blown out westward from the air conditioner 21, there is a possibility that the air is stagnated. Therefore, the shutter 82 of the north-side common space side air outlet 52 is opened so as to smoothly flow toward the ventilation fan 46. In this way, the direction of the air blown from the common space side fan 63 of the air conditioner may be changed in consideration of not only the presence or absence of the adjacent air conditioner but also the airflow of the ventilation fan 46.

  In the state of the air conditioning system 10 shown in FIG. 2, the air conditioner 23 surrounded by the alternate long and short dash line is stopped and the air conditioner 29 is operated. In this case, the air conditioner 26 includes the air conditioner 25, the air conditioner 29, and the air conditioner 23 that are adjacent to the north, east, and west, but the south side has no adjacent air conditioner. It is conceivable that the direction of the air blown out from the common space side fan 63 is changed to the south by opening the shutter 82. However, the tendency of the air flow in the ceiling AT is generally from south to north, and the air blown to the south can change the direction of the flow to go north somewhere according to the air flow of the ceiling AT. Conceivable. Therefore, in this case, for the air conditioner 26, it is preferable to open the shutter 81 and blow the air from the common space side fan 63 toward the stopped air conditioner 26 from the common space side outlet 51. The heat exchange efficiency of the entire system can be improved. Thus, in the air conditioning system 10, the common space side heat exchanging unit 65c of the air conditioner 26 changes the direction of the air blown out to the ceiling AT, the common space side of the adjacent air conditioner 29 that is operating. You may be comprised so that it can change and avoid the direction of the heat exchange part 65c.

  If there are a plurality of criteria for changing the direction of the air blown from the common space side fan 63 of the air conditioner, the priority order indicating which criteria are given priority is stored in advance in the memory 32, for example. You may comprise so that it may leave. By providing the priorities in this way, it is possible to introduce a plurality of judgment criteria for changing the direction of the air blown from the common space side fan 63. For example, priority is given to the presence or absence of an air conditioner, and priority is given to whether or not it is being operated next.

  In addition, in the case where a plurality of shutters are used to select the opening and closing of a plurality of common space side air outlets formed in one air conditioner, in the above description, one of all the common space side air outlets. Although the case where only one is opened is described, it may be configured so that two or three of all the common space side outlets can be selected simultaneously. Moreover, it is preferable that the common space side outlet is formed so as not to face the common space side inlet.

(4) Modification (4-1) Modification 1A
In the above-described embodiment, the case where the controller 30 determines the change of the direction of the air blown out from the common space side fan 63 at any time during the operation of the air conditioning system 10 has been described. However, once the change of the direction of the air blown out from the common space side fan 63 is set at the time of installation, it may not be changed thereafter. For example, after a user or a service person sets the direction of the air blown from the air conditioners 21 to 29 using the blow direction setting unit 150, the user or service man does not change regardless of the operating conditions of the air conditioners 21 to 29. It may be configured. Moreover, you may comprise so that it can select by the blowing direction setting part 150 the case where it judges as needed like FIG.

(4-2) Modification 1B
Although the said embodiment demonstrated the case where the common space side blower outlets 51-54 were arrange | positioned at the four directions of the ventilation path switching apparatus 80, 180 degree | times like the ventilation path switching apparatus 80 shown by FIG. It can also comprise so that the common space side blower outlets 55 and 56 may be formed in the direction where an angle differs. By changing the angle of the blowing direction by 180 degrees, for example, the blowing direction can be changed between the front direction and the rear direction or the right direction and the left direction. The ventilation path switching device 80 in FIG. 8 may be configured to switch between the ventilation paths 85 and 86 by closing one of the two ventilation paths 85 and 86 with the movable plate 87. In FIG. 8, the ventilation path 85 is blocked and air is blown out from the ventilation path 86. If the movable plate 87 is moved as indicated by a two-dot chain line to close the ventilation path 86, air can be blown out from the ventilation path 85.

(4-3) Modification 1C
Moreover, although the modification 1B demonstrated the case where the angle of the blowing direction differs 180 degrees of true reverse, for example, 90 degrees or more may be sufficient. Although FIG. 9 shows a case where the common space side outlets 51 and 52 are different by 90 degrees, the common space side outlets 51 and 52 may be formed toward another angle of 90 degrees or more. . In this case, not only when the common space-side outlets 51 and 52 are arranged in the horizontal plane so as to blow in different directions by 90 degrees in the horizontal plane (for example, eastward and northward), but also a vertical plane The common space side air outlets 51 and 52 may be arranged in the inside so as to blow out in directions different by 90 degrees in the horizontal plane. As an example of such a configuration, there is a configuration in which air is blown out in the horizontal direction from the common space side air outlet 51 and air is blown out vertically from the common space side air outlet 52.

(4-4) Modification 1D
Although the said embodiment demonstrated the case where the blowing direction of the air which blows off from the common space side fan 63 to ceiling back AT by switching opening and closing of the shutters 81-84 of the ventilation path switching apparatus 80 was shown in FIG. As shown, a plurality of wind direction changing plates 180 may be used to change the blowing direction of the air blown from the common space side fan 63 to the ceiling AT. The direction of the wind direction changing plate 180 can be changed by sliding the connecting rod 181 connecting the plurality of wind direction changing plates 180 with the swinging rod 182 swung by the motor 183. In the state of FIG. 10, air is blown in the direction of the arrow indicated by the solid line, but by sliding the connecting rod 181 toward the common space side heat exchanger 62, the arrow indicated by the broken line is indicated. The air blowing direction is changed. The connecting rod 181, the swinging rod 182, and the motor 183 constitute a wind direction changing plate driving device 184.

  11A and 11B, a plurality of wind direction changing plates 180 may be attached to the drive ring 185, and the drive ring 185 may be rotated by the motor 186. Good. For example, in FIG. 11A, air blows out toward the front FW. If this is rotated 270 degrees clockwise as shown in FIG. 11B, the air can be changed to blow out toward the left LS. As described above, the controller 30 can control the motor 186 to rotate the drive ring 185 so that air can be blown out in any direction of 360 degrees in the horizontal plane. The drive ring 185 and the motor 186 constitute a wind direction changing plate driving device 187. Similarly, as shown in FIG. 12, by controlling the motor 186 with the controller 30 and rotating it with the drive ring 185, the common space side outlet 51 can be directed to any direction of 360 degrees in the horizontal plane. You may comprise so that it can do.

(4-5) Modification 1E
Although the said embodiment demonstrated the case where the air conditioners 21-29 were an integral type, the air conditioners 21-29 may be a separate type. FIG. 13 shows an example of the configuration of the air conditioner 21. The difference in configuration between the air conditioner 21 shown in FIG. 2 and the air conditioner 21 shown in FIG. 13 is whether or not the casing 65 is completely separated. In the air conditioner 21 shown in FIG. 13, the air-conditioning target space-side heat exchange unit 65 b is housed in one casing of the casing 65, and the common space-side heat exchange unit 65 c is another casing of the casing 65. Is housed inside. The air-conditioning target space-side heat exchange unit 65b and the common space-side heat exchange unit 65c are connected by the refrigerant pipe 60a shown in FIG. Therefore, by changing the piping of the refrigerant piping 60a, the common space side heat exchanging portion 65c can be arranged at an arbitrary position on the ceiling back AT. FIG. 13 illustrates a configuration in which heat is transmitted between one common space side heat exchange unit 65c and one air conditioning target space side heat exchange unit 65b in one air conditioner 21. However, in one air conditioner 21, the heat transfer may be performed between one common space-side heat exchange unit 65c and a plurality of air-conditioning target space-side heat exchange units 65b.

(4-6) Modification 1F
As in the case of the air conditioner 25 of FIG. 2, when there are adjacent air conditioners 22, 24, 26, 28 in operation in any of the four common space side outlets 51 to 54, for example, The air blown out from the common space side fan 63 of the air conditioner 25 toward the air conditioner having the smallest processing load among the adjacent air conditioners 22, 24, 26, 28 that are in operation. It may be configured to change the orientation. For example, the processing load amount increases or decreases depending on a temperature difference between the set temperature of the room RM and the temperature of the air sucked into the air conditioners 21 to 29 from the room RM. For example, in the cooling operation, the processing load amount is larger when the set temperature is 28 ° C. and the sucked air temperature is 32 ° C. than when the set temperature is 28 ° C. and the sucked air temperature is 30 ° C. Become. Further, for example, in the cooling operation, the processing load amount is more when the set temperature is 26 ° C. and the sucked air temperature is 30 ° C. than when the set temperature is 28 ° C. and the sucked air temperature is 30 ° C. Will grow. In the heating operation, for example, the processing load amount is larger when the set temperature is 24 ° C. and the temperature of the sucked air is 18 ° C. than when the set temperature is 24 ° C. and the temperature of the sucked air is 20 ° C. Compared with the case where the set temperature is 22 ° C. and the temperature of the sucked air is 20 ° C., the processing load is larger when the set temperature is 24 ° C. and the temperature of the sucked air is 20 ° C. The controller 30 can acquire data necessary for the comparison of the processing load amounts from the control units 21a to 29a of the air conditioners 21 to 29. The temperature of the air sucked into the air conditioners 21 to 29 from the room RM can be detected by the control units 21a to 29a by the temperature sensors 72 of the air conditioners 21 to 29.

  For example, if the processing load amount is the same, the direction of the air that is blown out from the common space side fan 63 of the air conditioner 25 is changed toward a low rated capacity of the air conditioners 21 to 29. May be configured. In this case, the rated capacities of the air conditioners 21 to 29 may be stored in the memory 32 of the controller 30, for example, or may be configured to be input using the blowing direction setting unit 150. On the contrary, the air conditioners 21 to 29 having the rated capacity may be determined first, and the blowing direction may be determined based on the processing load if there is no difference in the rated capacity.

(4-7) Modification 1F
In the above embodiment, the case where the air-conditioning target space is one room RM has been described. However, the air-conditioning target space is not limited to one independent space, and may be a plurality of independent spaces. For example, the air conditioners 21 to 23 can be configured to air-condition one room, and the air conditioners 24 to 29 can be configured to air-condition other rooms.

(4-8) Modification 1G
In the above embodiment, the case where the common space side intake port 65f is formed on the upper surface of the casing 65 has been described. However, the location where the common space side intake port 65f is formed is not limited to the upper surface of the casing 65. For example, the formation location of the common space side intake port 65 f may be a side surface of the casing 65.

(5) Features (5-1)
The air conditioning system 10 described above changes the direction of air that is heat-exchanged by the common space-side heat exchanging portion 65c of each of the air conditioners 21 to 29 and blown out to the ceiling AT that is a common space by the common space-side fan 63. can do. Since it is comprised in this way, the air after heat exchange can be blown off by the common space side fan 63 of each air conditioner 21-29 in the direction which can exchange heat efficiently. As a result, the air conditioning system 10 can efficiently share the air in the ceiling AT with the plurality of air conditioners 21 to 29 for heat exchange and suppress energy consumption of the entire system. The common space is not limited to the ceiling AT, but for example, a double wall connecting the ceilings of the upper and lower floors of the building or two walls provided between the two walls. It may be a gap.

(5-2)
In the air conditioning system 10 described above, the ventilation path switching device 80 switches the ventilation paths 85, 86, 87, 88 of the common space side heat exchanging portion 65 c to change the blowing direction of the air blown from the common space side fan 63. With such a configuration, it is possible to realize a configuration capable of changing the blowing direction by reliably limiting the direction and the common space side outlets 51 to 54 that are locations to be blown out from the air conditioners 21 to 29. As a result, it is possible to easily realize a configuration in which the air in the ceiling AT can be efficiently shared by the plurality of air conditioners 21 to 29 for heat exchange.

(5-3)
The ventilation path switching apparatus 80 of 1st Embodiment is comprised including the shutters 81-84. Note that the movable plate 100 shown in FIG. 8 may be used instead of the shutters 81 to 84. The ventilation path switching device 80 is configured at a low cost by the shutters 81 to 84, and the change in the blowing direction of the ventilation path switching device 80 can be realized by opening and closing the shutters 81 to 84. As a result, efficient sharing of the air in the ceiling AT for heat exchange between the plurality of air conditioners 21 to 29 can be realized at low cost.

(5-4)
If the wind direction changing plate 180 and the wind direction changing plate driving devices 184 and 187 that drive the wind direction changing plate described with reference to FIG. 10 or FIG. 11 are applied to the air conditioners 21 to 29 shown in FIG. The structure which can restrict | limit the direction which blows off from the common space side heat exchange part 65c of the conditioners 21-29 reliably and can change a blowing direction is realizable. As a result, it is possible to easily realize a configuration in which the air in the ceiling AT can be efficiently shared by the plurality of air conditioners 21 to 29 for heat exchange.

(5-5)
As described in FIGS. 6, 8, 9, and 12, the direction of the air blown out to the ceiling AT is changed to at least two directions that differ by 90 degrees or more around the common space side heat exchange section 65c. Therefore, for example, even when the common space side heat exchanging portion 65c is arranged in a matrix as shown in FIG. 2 in the ceiling AT, there is a case where there is a blowing direction that can improve the efficiency of the entire air conditioning system. Can be increased. As a result, the energy consumption of the entire system can be suppressed by efficiently sharing in many situations. As shown in FIG. 6, if the direction of the air blown out to the ceiling AT can be changed to any of the four directions of the common space side heat exchanging portion 65c, the air conditioning system as a whole can improve the efficiency. The number of cases where a direction exists can be further increased. Further, as shown in FIG. 8 and FIG. 9, the direction of the air blown out to the ceiling AT is configured so that it can be changed to two directions having different angles by 180 degrees around the common space side heat exchanging portion 65c. The same effect can be achieved even if it is done. And when the direction of the air blown out to the ceiling AT is changed to two directions having different angles by 180 degrees around the common space side heat exchange part 65c, the air flow can be changed in the opposite direction. It becomes easier to create an air flow that can be efficiently shared by greatly changing the air flow path of the ceiling AT.

(5-6)
When the direction of the air blown out to the ceiling AT is changed while avoiding the direction of the adjacent common space side heat exchanging portion 65c that is operating, the adjacent common space side heat exchanging portion 65c generates the same exhaust heat. For example, when both are performing a cooling operation or both are performing a heating operation, the temperature around the adjacent common space side heat exchanging portion 65c is affected by the heat exhausted by itself and the efficiency of heat exchange is increased. It is possible to prevent a change in a worsening direction. As a result, it is possible to prevent the heat exchange efficiency of the adjacent common space side heat exchange part 65c from being lowered by blowing the air after heat exchange to the adjacent common space side heat exchange part 65c.

(5-7)
If the direction of the air blown from the plurality of common space side fans 63 of the air conditioning system is set by the blowing direction setting unit 150, it can be set in a concentrated manner using the blowing direction setting unit 150. Thereby, the setting labor can be saved as the number of the common space side fans 63 to be set increases. Moreover, when the blowing direction setting unit 150 has a map screen 151 for displaying and setting the direction of air blown from the plurality of common space side heat exchange units 65c and the common space side heat exchange unit 65c, a map is displayed. It can set, confirming the direction of the air which blows off from the some common space side heat exchange part 65c and the common space side heat exchange part 65c seeing the screen 151. FIG. Thereby, the convenience of setting the direction of the blown air is improved.

DESCRIPTION OF SYMBOLS 10 Air conditioning system 21-29 Air conditioner 30 Controller 46 Ventilation fan 51-56 Common space side outlet 65b Air-conditioning object side heat exchange part 65c Common space side heat exchange part 63 Common space side fan 64 Air conditioning object space side fan 80 Ventilation path switching devices 81 to 84 Shutter 150 Blowing direction setting unit 151 Map screens 184 and 187 Direction change plate driving device

Japanese Patent Laid-Open No. 2001-173991

Claims (10)

In order to perform air conditioning of an indoor air-conditioning target space, a plurality of air conditioners (21 to 21) that exchange heat with air in a common space outside the air-conditioning target that is arranged indoors around the air-conditioning target space 29) an air conditioning system (10) comprising
At least some of the plurality of air conditioners are
An air conditioning target space side heat exchange section (65b) that communicates with the air conditioning target space and performs heat exchange with the air in the air conditioning target space;
A common space side heat exchanging portion (65c) that communicates with the common space and that transfers heat to and from the air conditioning target space side heat exchanging portion;
A common space side fan (63) for causing air taken in from the common space to flow through the common space side heat exchanging part and blowing out to the common space;
With
An air conditioning system configured to change a direction of air blown into the common space by the common space fan. The common space side heat exchanging unit has an air passage switching device (80) that switches an air passage of the common space side heat exchanging unit and changes a blowing direction of air blown from the common space side fan.
The air conditioning system according to claim 1. The ventilation path switching device includes a shutter (81 to 84), and changes a blowing direction of air blown from the common space side fan by opening and closing the shutter.
The air conditioning system according to claim 2. The common space side heat exchanging section is blown out from a blowout port through which air blown out from the common space side fan passes, a wind direction changing plate (180) provided in the blowout port, and the common space side fan. An air direction change plate driving device (184, 187) for driving the air direction change plate to change the air blowing direction;
The air conditioning system according to any one of claims 1 to 3. The common space side heat exchange part is configured to change the direction of the air blown into the common space into at least two directions having an angle of 90 degrees or more around the common space side heat exchange part.
The air conditioning system according to any one of claims 1 to 4. The common space side heat exchange unit is configured to change the direction of the air blown into the common space to any one of the four directions of the common space side heat exchange unit,
The air conditioning system according to claim 5. The common space side heat exchange part is configured to change the direction of the air blown into the common space into two directions having different angles by 180 degrees around the common space side heat exchange part.
The air conditioning system according to claim 5. The common space side heat exchange part is configured to change the direction of air blown into the common space while avoiding the direction of the adjacent common space side heat exchange part in operation.
The air conditioning system according to any one of claims 1 to 7. A blow direction setting section (150) for setting a direction of air blown into the common space by the plurality of common space fans;
The air conditioning system according to any one of claims 1 to 8. The blowing direction setting unit has a map screen (151) for displaying and setting the direction of air blown from the plurality of common space side heat exchange units and the common space side heat exchange unit,
The air conditioning system according to claim 9.

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