JP2013160446A - Outside air treatment system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve an outside air treatment system with a large capacity in which a plurality of outside air treatment units are all integratedly operated.SOLUTION: In an outside air treatment system (1) configured by connecting a plurality of outside air treatment units (20a-20d), a master unit out of the plurality of outside air treatment units (20a-20d) is operated by using master unit designated sensor detection data which is detection data of a sensor provided to an outside air treatment unit designated by the master unit as detection data of sensors (9a-9d) for detecting state quantity of treating air to be control indexes, and a slave unit out of the plurality of outside air treatment units other than the master unit operates in synchronization with the master unit using the master unit designated sensor detection data by a command from the master unit.

Description

  The present invention relates to an outside air processing system, and more particularly, to an outside air processing system configured by connecting a plurality of outside air processing units.

  Conventionally, there is an outside air processing unit as shown in Patent Document 1 (Japanese Patent Laid-Open No. 2007-93125). This outdoor air processing unit can perform a dehumidifying operation and a humidifying operation using outdoor air so that the humidity of the indoor air in the living room becomes the target humidity.

  In the conventional outside air processing unit, it is conceivable to configure a large capacity outside air processing system by connecting a plurality of small capacity outside air processing units for the purpose of increasing the capacity.

  However, simply connecting a plurality of outside air processing units cannot operate all the outside air processing units as a single unit, and there is a possibility that the dehumidifying operation and the humidifying operation cannot be performed stably.

  An object of the present invention is to realize a large-capacity outside air processing system in which a plurality of outside air processing units all operate as one unit.

  An outside air processing system according to a first aspect is an outside air processing system configured by connecting a plurality of outside air processing units. In the outside air processing system, a main unit in the plurality of outside air processing units serves as a control index. As the detection data of the sensor that detects the state quantity of the machine, the operation is performed using the master unit designated sensor detection data that is the detection data of the sensor provided in the outside air processing unit designated by the master unit. The slave unit in the outside air processing unit performs an operation synchronized with the master unit using the master unit designated sensor detection data in accordance with a command from the master unit.

  In an outside air processing system configured by connecting a plurality of outside air processing units, in order to operate all the outside air processing units as a single unit, a master unit and a parent in the plurality of outside air processing units are operated. It is conceivable to operate the slave units in a plurality of outside air processing units other than the units in synchronization. Thereby, when the parent device is performing the dehumidifying operation, the child device also performs the dehumidifying operation, and when the parent device is performing the humidifying operation, the child device is also performing the humidifying operation.

  At this time, each of the plurality of outside air processing units is provided with a sensor that detects a state quantity of the processing air serving as a control index.If the operation control according to the present invention is not performed, each outside air processing unit is The dehumidifying operation and the humidifying operation are performed using the detection data of the sensor that the user has.

  However, because there are individual differences in the sensor, even if the master unit and the slave unit are operated in synchronization, for example, in a certain outside air processing unit, the humidity of the processing air reaches the target humidity and the thermo-off state is entered. In other outside air processing units, the humidity of the room air may not reach the target humidity and may be in a thermo-on state. In such an operating state, there is a possibility that the dehumidifying operation and the humidifying operation cannot be stably performed as the entire outside air processing system. The outside air processing system performs automatic dehumidifying / humidifying operation when the humidity of the room air is higher than the target humidity and switching to the dehumidifying operation, and switching to the humidifying operation when the humidity of the indoor air is lower than the target humidity. However, in this case, a dehumidifying operation may be performed in some outside air processing units, and a humidifying operation may be performed in other outside air processing units. In such an operating state, there is a risk that inconsistent operation may be performed between the outside air processing units.

  Therefore, in this outside air processing system, the master unit is detection data of a sensor provided in an outside air processing unit designated by the master unit as detection data of a sensor that detects a state quantity of processing air that is a control index. Operates using the specified sensor detection data, and the slave units in multiple outside air processing units other than the master unit synchronize with the master unit using the master unit specified sensor detection data in response to a command from the master unit. I am trying to drive. Here, “The slave unit performs the operation synchronized with the master unit using the master unit specified sensor detection data according to the command from the master unit” means that the master unit includes the contents of the operation including the slave unit. The master unit commands the contents of this operation to the slave unit as information related to the operation of the master unit, and the slave unit performs the operation commanded from the master unit using the master unit designated sensor detection data. Means to do.

  Thereby, in this outside air processing system, it is possible to avoid an operating state in which the outside air processing unit in the thermo-off state and the outside air processing unit in the thermo-on state coexist during the dehumidifying operation or the humidifying operation. In addition, it is possible to avoid inconsistent operation between the outside air processing units during the automatic dehumidifying / humidifying operation. In addition, it is possible to realize a large-capacity outside air processing system in which a plurality of outside air processing units all operate as one unit.

  An outside air processing system according to a second aspect is the same as the outside air processing system according to the first aspect, wherein a plurality of outside air processing units are connected to each other via a remote control communication line from a remote controller. The detection data and information related to the operation of the master unit are communicated between a plurality of outside air processing units via a remote control communication line.

  In this outside air processing system, a large-capacity outside air processing system in which a plurality of outside air processing units operate as a single body is realized by a simple installation operation of connecting a remote control communication line between a plurality of outside air processing units. be able to.

  In the outside air processing system according to the third aspect, in the outside air processing system according to the first or second aspect, the master unit is set based on a unit number assigned to a plurality of outside air processing units.

  In this outside air processing system, since the parent device is automatically set based on the unit number, the operation of manually setting the parent device can be omitted.

  The outside air processing system according to the fourth aspect is the outside air processing system according to any one of the first to third aspects. When the outside air processing unit set as the master unit fails, another outside air processing unit is used. Is set as a new base unit.

  In this outside air processing system, it is possible to avoid a shutdown due to a failure of the master unit.

  In the outside air processing system according to the fifth aspect, in the outside air processing system according to any of the first to fourth aspects, the outside air processing unit designated by the parent device for obtaining the parent device designation sensor detection data has failed. In this case, detection data of sensors provided in other outside air processing units is designated as new parent device designation sensor detection data.

  In this outside air processing system, it is possible to avoid an operation stop due to a failure of the outside air processing unit for obtaining the master unit designated sensor detection data.

  In the outside air processing system according to the sixth aspect, in the outside air processing system according to any one of the first to fifth aspects, when the operation of the master unit is stopped in the operation in which the number of outside air processing units is limited. In response to a command from the parent device, only the child device operates using the parent device designation sensor detection data.

  In this outside air processing system, even when the master unit is stopped, the operation of only the slave unit can be continued.

  In the outside air processing system according to the seventh aspect, in the outside air processing system according to any of the first to sixth aspects, in the operation in which the number of outside air processing units is limited, When the outside air processing unit designated for obtaining is stopped, the detection data of the sensors provided in the other outside air processing units is designated as new parent device designation sensor detection data.

  In this outside air processing system, the operation can be continued even when the outside air processing unit for obtaining the master unit designated sensor detection data is stopped.

  As described above, according to the present invention, the following effects can be obtained.

  In the outside air processing system according to the first aspect, it is possible to avoid an operating state in which the outside air processing unit in the thermo-off state and the outside air processing unit in the thermo-on state coexist during the dehumidifying operation or the humidifying operation. In addition, it is possible to avoid inconsistent operation between the outside air processing units during the automatic dehumidifying / humidifying operation. In addition, it is possible to realize a large-capacity outside air processing system in which a plurality of outside air processing units all operate as one unit.

  In the outside air processing system according to the second aspect, a large-capacity outside air in which a plurality of outside air processing units operate as a single unit by a simple installation operation of connecting a remote control communication line between the plurality of outside air processing units. A processing system can be realized.

  In the outside air processing system according to the third aspect, since the parent device is automatically set based on the unit number, the operation of manually setting the parent device can be omitted.

  In the outside air processing system according to the fourth aspect, it is possible to avoid an operation stop due to a failure of the master unit.

  In the outside air processing system according to the fifth aspect, it is possible to avoid an operation stop due to a failure of the outside air processing unit for obtaining the master unit designated sensor detection data.

  In the outside air processing system according to the sixth aspect, it is possible to continue the operation of only the slave unit even when the master unit is stopped.

  In the outside air processing system according to the seventh aspect, the operation can be continued even when the outside air processing unit for obtaining the master unit designated sensor detection data is stopped.

1 is a schematic configuration diagram of an outside air processing system according to an embodiment of the present invention. It is a front view of the outside air processing module which constitutes the outside air processing system concerning one embodiment of the present invention. It is a top view of the outside air processing module which constitutes the outside air processing system concerning one embodiment of the present invention. It is a flowchart of synchronous operation control of an outside air processing unit.

  Hereinafter, an embodiment of an outside air processing system according to the present invention will be described with reference to the drawings. In addition, the specific structure of the outside air processing system concerning this invention is not restricted to the following embodiment, It can change in the range which does not deviate from the summary of invention.

(1) Overall Configuration of Outside Air Processing System FIG. 1 is a schematic configuration diagram of an outside air processing system 1 according to an embodiment of the present invention. Although the outside air processing units 20a to 20b all have the same equipment configuration, only the outside air processing unit 20a is illustrated in detail in FIG. 1, and the illustration of the outside air processing units 20b to 20d is simplified. Yes.

  The outside air processing system 1 is an air conditioning system that performs a dehumidifying operation and a humidifying operation using outdoor air (OA) so that the humidity of the indoor air (RA) in the living room of a building becomes a target humidity. The outside air processing system 1 mainly includes an outside air processing module 10, an OA collective duct 2, an RA collective duct 3, an EA collective duct 4, and an SA collective duct 5.

  The outside air processing module 10 is an aggregate of outside air processing units configured by connecting a plurality of (in this case, four) outside air processing units 20a to 20d, and is installed on a floor in a machine room or the like of a building. ing. The outside air processing module 10 is connected to a remote controller 6 provided in a living room or the like via a remote control communication line 7. And the external air processing module 10 performs the operation | movement of a dehumidification driving | operation and a humidification driving | operation, as all the outside air processing units 20a-20d are united based on the instruction | command from the remote controller 6 as follows. . Thereby, the outside air processing system 1 constitutes a large capacity outside air processing system by connecting a plurality of small capacity outside air processing units 20a to 20d.

  The OA collective duct 2 is a duct for introducing outdoor air (OA) into the outside air processing module 10. The collective duct 3 for RA is a duct for introducing room air (RA) into the outside air processing module 10. The EA collective duct 4 is a duct for discharging exhaust air (EA) from the outside air processing module 10 to the outside of the room. The collective duct 5 for SA is a duct for supplying the supply air (SA) from the outside air processing module 10 into the living room.

(2) Outside Air Processing Module and Outside Air Processing Unit Next, the outside air processing module 10 and the outside air processing units 20a to 20d constituting the outside air processing module 10 will be described with reference to FIGS. Here, FIG. 2 is a front view of the outside air processing module 10. FIG. 3 is a top view of the outside air processing module 10.

  The outside air processing module 10 mainly includes a plurality of (in this case, four) outside air processing units 20a to 20d and a stacking base 50 for stacking and installing the outside air processing units 20a to 20d. .

<Outside air treatment unit>
The outside air processing units 20a to 20d are ceiling-suspended outside air processing units. Each of the outside air processing units 20a to 20d performs a dehumidifying operation and a humidifying operation by performing adsorption and desorption of moisture in the air using a plurality of adsorption heat exchangers each provided with an adsorbent on the surface. Is a possible unit. In addition, the outdoor air processing units 20a to 20d can take outdoor air (OA) and supply it as supply air (SA) indoors, and simultaneously take in indoor air (RA) and discharge it as exhaust air (EA) outside the room. It is a possible unit. In the following description of the configuration of the outside air processing units 20a to 20d, the configuration of the outside air processing unit 20a will be described in detail. For the configurations of the outside air processing units 20b to 20d, the subscript [a] is denoted by “b” to “d”. The description will be omitted by replacing it with "."

-Configuration of outside air processing unit-
The outside air processing unit 20a is a so-called heat source-integrated outside air processing unit composed of a unit in which all the devices constituting the refrigerant circuit are stored, and has a rectangular box-shaped unit casing 37a that is flat in the horizontal direction. ing.

  The refrigerant circuit of the outside air processing unit 20a mainly includes a compressor 21a for compressing refrigerant, first and second adsorption heat exchangers 22a and 23a provided with an adsorbent on the surface, an expansion valve 24a, and four-way switching. It is configured by being connected to the valve 25a. The expansion valve 24a is connected between one end of the first adsorption heat exchanger 22a and one end of the second adsorption heat exchanger 23a. The four-way switching valve 25a includes the other end of the first adsorption heat exchanger 22a (ie, the anti-expansion valve side end), the other end of the second adsorption heat exchanger 23a (ie, the anti-expansion valve side end), and the compressor 21a. Are connected to the suction side and the discharge side of the compressor 21a.

  The four-way switching valve 25a discharges from the compressor 21a in a first switching state in which the refrigerant discharged from the compressor 21a is circulated in the order of the first adsorption heat exchanger 22a, the expansion valve 24a, and the second adsorption heat exchanger 23a. It is possible to switch to the second switching state in which the refrigerant thus circulated in the order of the second adsorption heat exchanger 22a, the expansion valve 24a, and the first adsorption heat exchanger 22a. Specifically, the four-way switching valve 25a includes a first port 26a connected to the discharge side of the compressor 21a, a second port 27a connected to the suction side of the compressor 21a, and a first adsorption heat exchanger. It has the 3rd port 28a connected to the other end of 22a, and the 4th port 29a connected to the other end of the 2nd adsorption heat exchanger 23a. The first switching state is a state in which the first port 26a and the third port 28a communicate with each other and the second port 27a and the fourth port 28a communicate with each other (see the solid line in the four-way switching valve 25a in FIG. 1). Means. The second switching state is a state in which the first port 26a and the fourth port 29a communicate with each other and the second port 27a and the third port 28a communicate with each other (see the broken line in the four-way switching valve 25a in FIG. 1). Means.

  The first adsorption heat exchanger 22a and the second adsorption heat exchanger 23a are configured by, for example, a cross fin type fin-and-tube heat exchanger, and are adsorbed on the outer surfaces of many fins and heat transfer tubes. The material is supported by dip molding (dip molding). As this adsorbent, functionalities such as zeolite, silica gel, activated carbon, hydrophilic or water-absorbing organic polymer material, ion exchange resin material having carboxylic acid group or sulfonic acid group, thermosensitive polymer, etc. Examples include polymer materials.

  In the refrigerant circuit of the outside air processing unit 20a as described above, when the four-way switching valve 25a is switched to the first switching state, the first adsorption heat exchanger 22a functions as a condenser, and the second adsorption heat exchanger 23a Functions as an evaporator. On the other hand, when the four-way switching valve 25a is switched to the second switching state, the first adsorption heat exchanger 22a functions as an evaporator, and the second adsorption heat exchanger 23a functions as a condenser.

  The outside air processing unit 20a includes a first air inlet 32a for taking outdoor air (OA) into the unit, a second air inlet 33a for taking indoor air (RA) into the unit, And an air supply port 35a for supplying supply air (SA) blown from the inside of the unit into the living room. The first intake port 32a is connected to the OA collective duct 2 via the OA branch duct 2a. The second air inlet 33a is connected to the RA collective duct 3 via the RA branch duct 3a. The exhaust port 34a is connected to the EA collective duct 4 via the EA branch duct 4a. The air supply port 35a is connected to the SA collective duct 5 via the SA branch duct 5a. The outside air processing unit 20a includes an exhaust fan 30a arranged in the unit so as to communicate with the exhaust port 34a, an air supply fan 31a arranged in the unit so as to communicate with the air supply port 35a, And a switching mechanism (not shown) including a damper or the like for switching the air flow path.

  Further, the outside air processing unit 20a has a unit control unit 36a that controls the operation of each unit such as the compressor 21a, the expansion valve 24a, the four-way switching valve 25a, the fans 30a and 31a, and the switching mechanism (not shown). doing. The unit control unit 36a includes a microcomputer, a memory, and the like, and can communicate with the remote controller 6 and the unit control units 36b to 36d of the other outside air processing units 20b to 20d. A board on which a microcomputer, a memory, and the like for configuring the unit control unit 36a are mounted is accommodated in the electrical component box 44a. The electrical component box 44a is provided in the unit casing 37a.

-Basic operation of outside air processing unit-
Each of the outside air processing units 20a to 20d can perform the following dehumidifying operation and humidifying operation. Here, the outside air processing unit 20a will be described as an example, and the basic operation of the outside air processing units 20b to 20d will be omitted by replacing the subscript [a] with “b” to “d”.

  In the first operation during the dehumidifying operation, the refrigerant circuit is switched to the four-way switching valve 25a in the second switching state (refer to the broken line of the four-way switching valve 25a in FIG. 1 and the arrow indicated by the broken line in FIG. 1). The first adsorption heat exchanger 22a functions as an evaporator, while the second adsorption heat exchanger 23a functions as a condenser. In the second operation, the refrigerant circuit has the four-way switching valve 25a in the first switching state (see the solid line of the four-way switching valve 25a in FIG. 1 and the arrow indicated by the solid line in FIG. 1). The first adsorption heat exchanger 22a functions as a condenser while the second adsorption heat exchanger 23a functions as an evaporator.

  When the exhaust fan 30a and the supply fan 31a are activated, outdoor air (OA) as first air is taken into the unit casing 37a from the first intake port 32a, and indoor air (RA) as second air is taken. The air is taken into the unit casing 37a from the second air inlet 33a.

  Next, the first operation of the dehumidifying operation will be described. In the first operation of the dehumidifying operation, the outdoor air (OA) passes through the first adsorption heat exchanger 22a by the operation of a switching mechanism (not shown) including a damper or the like. Here, the moisture in the air is adsorbed by the adsorbent of the first adsorption heat exchanger 22a functioning as an evaporator. The adsorption heat generated at this time is used as the evaporation heat of the refrigerant in the first adsorption heat exchanger 22a. Thus, the air dehumidified by the first adsorption heat exchanger 22a is supplied into the living room as supply air (SA) from the air supply port 35a. On the other hand, room air (RA) passes through the second adsorption heat exchanger 23a. Here, when the adsorbent of the second adsorption heat exchanger 23a functioning as a condenser is heated and the moisture adsorbed on the adsorbent is desorbed, the moisture is given to the air and the second adsorption heat exchanger. The adsorbent 23a is regenerated. In this way, the air used for regeneration of the adsorbent of the second adsorption heat exchanger 23a is discharged out of the room as exhaust air (EA) from the exhaust port 34a.

  Next, the second operation of the dehumidifying operation will be described. In the second operation of the dehumidifying operation, the outdoor air (OA) passes through the second adsorption heat exchanger 23a by the operation of a switching mechanism (not shown) including a damper or the like. Here, the moisture in the air is adsorbed by the adsorbent of the second adsorption heat exchanger 23a functioning as an evaporator. The adsorption heat generated at this time is used as the evaporation heat of the refrigerant in the second adsorption heat exchanger 23a. Thus, the air dehumidified by the second adsorption heat exchanger 23a is supplied into the living room as supply air (SA) from the air supply port 35a. On the other hand, room air (RA) passes the 1st adsorption heat exchanger 22a. Here, when the adsorbent of the first adsorption heat exchanger 22a functioning as a condenser is heated and moisture adsorbed on the adsorbent is desorbed, the moisture is added to the air and the first adsorption heat exchanger. The adsorbent 22a is regenerated. In this way, the air used for the regeneration of the adsorbent of the first adsorption heat exchanger 22a is discharged out of the room as exhaust air (EA) from the exhaust port 34a.

  In the first operation of the humidifying operation, the refrigerant circuit and the four-way switching valve 25a are in the first switching state (see the solid line of the four-way switching valve 25a in FIG. 1 and the arrows indicated by the solid line in FIG. 1). The first adsorption heat exchanger 22a functions as a condenser, while the second adsorption heat exchanger 23a functions as an evaporator. In the second operation, the refrigerant circuit is set to the four-way switching valve 25a in the second switching state (see the broken line of the four-way switching valve 25a in FIG. 1 and the arrow indicated by the broken line in FIG. 1). The first adsorption heat exchanger 22a functions as an evaporator, while the second adsorption heat exchanger 23a functions as a condenser.

  When the exhaust fan 30a and the supply fan 30b are activated, outdoor air (OA) as first air is taken into the unit casing 37a from the first intake port 32a, and indoor air (RA) as second air is taken. The air is taken into the unit casing 37a from the second air inlet 33a.

  Next, the first operation of the humidifying operation will be described. In the first operation of the humidifying operation, outdoor air (OA) passes through the first adsorption heat exchanger 22a by operating a switching mechanism (not shown) made of a damper or the like. Here, when the adsorbent of the first adsorption heat exchanger 22a functioning as a condenser is heated and moisture adsorbed on the adsorbent is desorbed, this moisture is imparted to the air. In this way, the air humidified by the first adsorption heat exchanger 22a is supplied to the living room as supply air (SA) from the air supply port 35a. On the other hand, room air (RA) passes through the second adsorption heat exchanger 23a. Here, the moisture in the air is adsorbed by the adsorbent of the second adsorption heat exchanger 23a functioning as an evaporator. The adsorption heat generated at this time is used as the evaporation heat of the refrigerant in the second adsorption heat exchanger 23a. Thus, the air which gave the water | moisture content to the adsorbent of the 2nd adsorption heat exchanger 23a is discharged | emitted out of the room as exhaust air (EA) from the exhaust port 34a.

  Next, the second operation during the humidifying operation will be described. In the second operation of the humidifying operation, outdoor air (OA) passes through the second adsorption heat exchanger 23a by an operation of a switching mechanism (not shown) including a damper or the like. Here, when the adsorbent of the second adsorption heat exchanger 23a functioning as a condenser is heated and moisture adsorbed on the adsorbent is desorbed, this moisture is imparted to the air. In this way, the air humidified by the second adsorption heat exchanger 23a is supplied to the living room as supply air (SA) from the air supply port 35a. On the other hand, room air (RA) passes the 1st adsorption heat exchanger 22a. Here, the moisture in the air is adsorbed by the adsorbent of the first adsorption heat exchanger 22a functioning as an evaporator. The adsorption heat generated at this time is used as the evaporation heat of the refrigerant in the first adsorption heat exchanger 22a. Thus, the air which gave the water | moisture content to the adsorbent of the 1st adsorption heat exchanger 22a is discharged | emitted from the exhaust port 34a to the outdoor as exhaust air (EA).

(3) Control configuration and operation of the outside air processing system Next, the operation of the outside air processing system 1 having the outside air processing module 10 configured as described above will be described with reference to FIGS. 1 and 4. Here, FIG. 4 is a flowchart of the synchronous operation control of the outside air processing units 20a to 20d.

-Control configuration of outside air treatment system-
The outside air processing system 1 includes a plurality of (four in this case) unit controllers 36a to 36d and a remote controller 6 in order to perform the basic operation of the dehumidifying operation and the humidifying operation in the outside air processing units 20a to 20d. Are connected via a remote control communication line 7 (including a crossover wiring for connecting the unit control units). In addition, the outdoor air processing units 20a to 20d are provided with RA temperature / humidity sensors 9a to 9d for detecting the temperature and humidity of indoor air (RA), which is a state quantity of processing air serving as a control index.

− Automatic assignment of unit numbers to outside air processing units −
In the outside air processing system 1, the remote controller 6 performs automatic assignment processing that automatically assigns unit numbers that distinguish each other to the outside air processing units 20a to 20d. Specifically, the remote controller 6 sequentially communicates with the unit controllers 36a to 36d, and unit numbers Nu are automatically assigned to the unit controllers 36a to 36d in the order recognized by the remote controller 6. Here, unit numbers Nu of “0” to “3” are assigned to the unit controllers 36a to 36d. However, the specific value of the unit number Nu is not limited to the above.

-Synchronous operation control of outside air processing unit-
In the outside air processing system 1, the basic operation of the dehumidifying operation and the humidifying operation is performed in the outside air processing units 20 a to 20 d according to a command from the remote controller 6.

  Here, in order to operate all the outside air processing units 20a to 20d as a single unit, a parent machine in the outside air processing units 20a to 20d and a child machine in the outside air processing units 20a to 20d other than the parent machine Can be operated in synchronization. Thereby, when the parent device is performing the dehumidifying operation, the child device also performs the dehumidifying operation, and when the parent device is performing the humidifying operation, the child device is also performing the humidifying operation.

  At this time, each of the outside air processing units 20a to 20d is provided with RA temperature / humidity sensors 9a to 9d as sensors for detecting the state quantity of the processing air serving as a control index, and the operation control according to the present invention is performed. Otherwise, each of the outside air processing units 20a to 20d performs the dehumidifying operation and the humidifying operation using the detection data of the RA temperature / humidity sensors 9a to 9d that the outside air processing unit 20a to 20d has. That is, each of the outside air processing units 20a to 20d performs the dehumidifying operation and the humidifying operation so that the humidity of the indoor air (RA) detected by the RA temperature / humidity sensors 9a to 9d becomes the target humidity.

  However, because there are individual differences in the sensor, even if the master unit and the slave unit are operated in synchronization, for example, in a certain outside air processing unit, the humidity of the processing air reaches the target humidity and the thermo-off state is entered. In other outside air processing units, the humidity of the room air may not reach the target humidity and may be in a thermo-on state. In such an operating state, the entire outside air processing system 1 may not be able to stably perform the dehumidifying operation or the humidifying operation. Further, the outside air processing system 1 performs an automatic dehumidifying / humidifying operation to switch to a dehumidifying operation when the humidity of the indoor air is higher than the target humidity and to switch to a humidifying operation when the humidity of the indoor air is lower than the target humidity. In this case, a dehumidifying operation may be performed in some outside air processing units, and a humidifying operation may be performed in other outside air processing units. In such an operating state, there is a risk that contradictory operation may be performed between the outside air processing units 20a to 20d.

  Therefore, here, the following synchronous operation control of the outside air processing units 20a to 20d is performed.

  First, in step S1, an outside air processing unit that serves as a parent machine among the outside air processing units 20a to 20d is set. Here, the master unit is automatically set based on the unit number Nu assigned to the outside air processing units 20a to 20d. Specifically, among the unit numbers “0” to “3” assigned to the outside air processing units 20a to 20d, the outside air processing unit 20a having the smallest unit number is automatically set as the master unit. And outside air processing unit 20b-20d other than the outside air processing unit 20a set as a main | base station is automatically set as a subunit | mobile_unit. The process for setting the master unit based on the unit number Nu is not limited to setting the outside air processing unit 20a having the smallest unit number as the master unit. For example, the outside air processing unit having the largest unit number is used. 20d may be set as the master unit. Since the setting of the parent device is automatically performed based on the unit number Nu assigned from the remote controller 6, the work of manually setting the parent device can be omitted.

  Next, in step S2, the outside air processing unit 20a serving as the master unit detects the temperature and humidity of the indoor air (RA) that serves as a control index in the dehumidifying operation, the humidifying operation, and the automatic dehumidifying operation. Temperature and humidity sensor for detecting indoor air (RA) temperature and humidity detection data (ie, master unit designated sensor detection data) commonly used for all outside air processing units 20a to 20d (I.e., base unit designation sensor) is designated. Here, the master unit designation sensor is set based on the unit number Nu assigned to the outside air processing units 20a to 20d. Specifically, among the unit numbers “0” to “3” assigned to the outside air processing units 20a to 20d, the RA temperature / humidity sensor 9a provided in the outside air processing unit 20a having the smallest unit number is the parent. Designated as machine-designated sensor. For this reason, the detection data of the temperature and humidity of the indoor air (RA) detected by the RA temperature / humidity sensor 9a is commonly used by all the outside air processing units 20a to 20d as the master unit designation sensor detection data. Become. Note that the process of designating the master unit designation sensor based on the unit number Nu is limited to setting the RA temperature / humidity sensor 9a provided in the outside air processing unit 20a having the smallest unit number as the master unit designation sensor. For example, the RA temperature / humidity sensor 9d provided in the outside air processing unit 20d having the largest unit number may be set as the parent device designation sensor. Further, instead of designating the master unit designation sensor based on the unit number Nu, the RA temperature / humidity sensor provided in the outside air processing unit serving as the master unit may be designated as the master unit designation sensor.

  Next, in step S3, the outside air processing unit 20a as the master unit receives a command from the remote controller 6, and determines the content of the driving operation including the outside air processing units 20b to 20d as the slave units. For example, when a dehumidifying operation command is received from the remote controller 6, the content of the driving operation is determined to be a dehumidifying operation, and when a humidifying operation command is received from the remote controller 6, the content of the driving operation is determined. When the humidifying operation is determined and an automatic dehumidifying / humidifying operation command is received from the remote controller 6, the content of the operation is determined as the automatic dehumidifying / humidifying operation. Then, the outside air processing unit 20a as the parent device uses the parent device designation sensor detection data (here, the detection data of the RA temperature / humidity sensor 9a), and the operation determined based on the command from the remote controller 6 (Here, any one of dehumidifying operation, humidifying operation, and automatic dehumidifying / humidifying operation) is performed.

  Next, in step S4, the outside air processing unit 20a as the parent device commands the contents of the driving operation determined by itself to the outside air processing units 20b to 20d as the child devices as information related to the operation of the parent device. At this time, the base unit designation sensor detection data is also transmitted from the outside air processing unit 20a as the base unit to the outside air processing units 20b to 20d as the slave units. Note that the base unit designation sensor detection data and information related to the operation of the outside air processing unit 20a serving as the base unit are communicated between the outside air processing units 20a to 20d via the remote control communication line 7.

  Next, in step S5, the outside air processing units 20b to 20d serving as slave units are instructed by the master unit designation sensor detection data (here, the RA temperature / humidity sensor) in response to a command from the outside air processing unit 20a serving as the base unit in step S4. 9a), the operation synchronized with the outside air processing unit 20a as the parent device (that is, the operation commanded from the outside air processing unit 20a as the parent device) is performed.

  Thereby, in the outside air processing system 1, it is possible to avoid an operation state in which the outside air processing unit in the thermo-off state and the outside air processing unit in the thermo-on state coexist during the dehumidifying operation or the humidifying operation. Further, in the automatic dehumidifying / humidifying operation, it is possible to avoid an inconsistent operation between the outside air processing units. And the large capacity | capacitance outside air processing system 1 by which all the outside air processing units 20a-20d operate | move as an integral thing is realizable.

  Moreover, even if the RA temperature / humidity sensors 9b to 9d provided in the outside air processing units 20b to 20d are out of order, the outside air processing units 20a to 20d are provided in the outside air processing unit 20a in the operation operation. Since the detection data of the RA temperature / humidity sensor 9a being used is used, the operation can be continued.

  Further, since the communication between the outside air processing unit 20a as the master unit and the outside air processing units 20b to 20d as the slave units is performed via the remote control communication line 7, the remote control communication line 7 is connected to the outside air processing units 20a to 20d. With a simple installation operation of connecting in between, it is possible to realize a large-capacity outside air processing system 1 in which all the outside air processing units 20a to 20d operate as a single unit.

  Next, when the outside air processing unit set as the master unit fails in step S6, the process proceeds to step S1, and a new one is selected from the other outside air processing units set as slave units. Set the base unit. In step S1, since the master unit is automatically set based on the unit number Nu, an outside air processing unit having a smaller unit number is set as the master unit among the operating outside air processing units. Will be.

  Thereby, in the outside air processing system 1, it is possible to avoid an operation stop due to a failure of the master unit.

  Next, in step S7, when the outside air processing unit designated by the parent device for obtaining the parent device designation sensor detection data has failed, the process proceeds to step S2 and is provided in another outside air processing unit. The detection data of the sensor is designated as new parent device designation sensor detection data. In step S2, since the parent device designation sensor is set based on the unit number Nu, the RA temperature provided in the outside air processing unit with the smaller unit number among the outside air processing units in operation.・ The humidity sensor will be set as the base unit designation sensor.

  Thereby, in the outside air processing system 1, it is possible to avoid an operation stop due to a failure of the outside air processing unit for obtaining the master unit designated sensor detection data.

  In the outside air processing system 1, the number of outside air processing units 20a to 20d is limited by the command from a CO2 sensor or a centralized management device (not shown) provided in the room (number-limited operation). May be performed.

  At this time, if the slave unit is simply performing a synchronous operation that performs the same operation as the master unit, if a command to stop the master unit operation is issued, the slave unit will stop with the stop of the master unit operation. Therefore, it is not possible to continue the operation of only the slave unit.

  However, in the synchronous operation control of the outside air processing system 1, as shown in steps S <b> 3 to S <b> 5, the master unit determines the operation content including the slave unit, and the master unit determines the content of this operation as the master unit. The slave unit is instructed as information regarding the operation of the master unit, and the slave unit performs the operation instructed by the master unit using the master unit designation sensor detection data.

  For this reason, even if the operation of the parent device is stopped, only the child device can be operated using the parent device designation sensor detection data in accordance with a command from the parent device. Thereby, in the outside air processing system 1, even if it is a case where a main | base station is stopped, the driving | operation of only a subunit | mobile_unit can be continued.

  Further, in the synchronous operation control of the outside air processing system 1, in the limited number operation, even when the parent unit stops the outside air processing unit designated for obtaining the parent unit designation sensor detection data, in step S2, However, it is possible to designate the detection data of sensors provided in other operable outside air processing units as new parent device designation sensor detection data. Thereby, in the outside air processing system 1, even if it is a case where the outside air processing unit provided with the main | base station designation | designated sensor is stopped, a driving | operation can be continued.

  The present invention can be widely applied to an outside air processing system configured by connecting a plurality of outside air processing units.

DESCRIPTION OF SYMBOLS 1 Outside air processing system 6 Remote controller 7 Remote control communication line 9a-9d RA temperature / humidity sensor (sensor)
20a to 20d outside air processing unit Nu unit number

JP 2007-93125 A

  The present invention relates to an outside air processing system, and more particularly, to an outside air processing system configured by connecting a plurality of outside air processing units.

  Conventionally, there is an outside air processing unit as shown in Patent Document 1 (Japanese Patent Laid-Open No. 2007-93125). This outdoor air processing unit can perform a dehumidifying operation and a humidifying operation using outdoor air so that the humidity of the indoor air in the living room becomes the target humidity.

  In the conventional outside air processing unit, it is conceivable to configure a large capacity outside air processing system by connecting a plurality of small capacity outside air processing units for the purpose of increasing the capacity.

  However, simply connecting a plurality of outside air processing units cannot operate all the outside air processing units as a single unit, and there is a possibility that the dehumidifying operation and the humidifying operation cannot be performed stably.

  An object of the present invention is to realize a large-capacity outside air processing system in which a plurality of outside air processing units all operate as one unit.

  An outside air processing system according to a first aspect is an outside air processing system configured by connecting a plurality of outside air processing units. In the outside air processing system, a main unit in the plurality of outside air processing units serves as a control index. As the detection data of the sensor that detects the state quantity of the machine, the operation is performed using the master unit designated sensor detection data that is the detection data of the sensor provided in the outside air processing unit designated by the master unit. The slave unit in the outside air processing unit performs an operation synchronized with the master unit using the master unit designated sensor detection data in accordance with a command from the master unit.

  In an outside air processing system configured by connecting a plurality of outside air processing units, in order to operate all the outside air processing units as a single unit, a master unit and a parent in the plurality of outside air processing units are operated. It is conceivable to operate the slave units in a plurality of outside air processing units other than the units in synchronization. Thereby, when the parent device is performing the dehumidifying operation, the child device also performs the dehumidifying operation, and when the parent device is performing the humidifying operation, the child device is also performing the humidifying operation.

  At this time, each of the plurality of outside air processing units is provided with a sensor that detects a state quantity of the processing air serving as a control index.If the operation control according to the present invention is not performed, each outside air processing unit is The dehumidifying operation and the humidifying operation are performed using the detection data of the sensor that the user has.

  However, because there are individual differences in the sensor, even if the master unit and the slave unit are operated in synchronization, for example, in a certain outside air processing unit, the humidity of the processing air reaches the target humidity and the thermo-off state is entered. In other outside air processing units, the humidity of the room air may not reach the target humidity and may be in a thermo-on state. In such an operating state, there is a possibility that the dehumidifying operation and the humidifying operation cannot be stably performed as the entire outside air processing system. The outside air processing system performs automatic dehumidifying / humidifying operation when the humidity of the room air is higher than the target humidity and switching to the dehumidifying operation, and switching to the humidifying operation when the humidity of the indoor air is lower than the target humidity. However, in this case, a dehumidifying operation may be performed in some outside air processing units, and a humidifying operation may be performed in other outside air processing units. In such an operating state, there is a risk that inconsistent operation may be performed between the outside air processing units.

  Therefore, in this outside air processing system, the master unit is detection data of a sensor provided in an outside air processing unit designated by the master unit as detection data of a sensor that detects a state quantity of processing air that is a control index. Operates using the specified sensor detection data, and the slave units in multiple outside air processing units other than the master unit synchronize with the master unit using the master unit specified sensor detection data in response to a command from the master unit. I am trying to drive. Here, “The slave unit performs the operation synchronized with the master unit using the master unit specified sensor detection data according to the command from the master unit” means that the master unit includes the contents of the operation including the slave unit. The master unit commands the contents of this operation to the slave unit as information related to the operation of the master unit, and the slave unit performs the operation commanded from the master unit using the master unit designated sensor detection data. Means to do.

  Thereby, in this outside air processing system, it is possible to avoid an operating state in which the outside air processing unit in the thermo-off state and the outside air processing unit in the thermo-on state coexist during the dehumidifying operation or the humidifying operation. In addition, it is possible to avoid inconsistent operation between the outside air processing units during the automatic dehumidifying / humidifying operation. In addition, it is possible to realize a large-capacity outside air processing system in which a plurality of outside air processing units all operate as one unit.

Moreover, in this outside air processing system, when the operation of the parent device is stopped in the operation in which the number of outside air processing units is limited, a new parent device is set by a command from the parent device whose operation is stopped. Rather, only the slave unit operates using the master unit designated sensor detection data.

In this outside air processing system, the operation of only the slave unit can be continued when the master unit is stopped by the number-limited operation.

  An outside air processing system according to a second aspect is the same as the outside air processing system according to the first aspect, wherein a plurality of outside air processing units are connected to each other via a remote control communication line from a remote controller. The detection data and information related to the operation of the master unit are communicated between a plurality of outside air processing units via a remote control communication line.

  In this outside air processing system, a large-capacity outside air processing system in which a plurality of outside air processing units operate as a single body is realized by a simple installation operation of connecting a remote control communication line between a plurality of outside air processing units. be able to.

  In the outside air processing system according to the third aspect, in the outside air processing system according to the first or second aspect, the master unit is set based on a unit number assigned to a plurality of outside air processing units.

  In this outside air processing system, since the parent device is automatically set based on the unit number, the operation of manually setting the parent device can be omitted.

  In the outside air processing system according to the fourth aspect, in the outside air processing systems according to the first to third viewpoints, when the outside air processing unit set as the master unit fails, the other outside air processing unit becomes new. Set as the base unit.

  In this outside air processing system, it is possible to avoid a shutdown due to a failure of the master unit.

  In the outside air processing system according to the fifth aspect, in the outside air processing system according to any of the first to fourth aspects, the outside air processing unit designated by the parent device for obtaining the parent device designation sensor detection data has failed. In this case, detection data of sensors provided in other outside air processing units is designated as new parent device designation sensor detection data.

  In this outside air processing system, it is possible to avoid an operation stop due to a failure of the outside air processing unit for obtaining the master unit designated sensor detection data.

  In the outside air processing system according to the sixth aspect, in the outside air processing system according to any of the first to fifth aspects, in the operation in which the number of operating units of the outside air processing unit is limited, the parent device receives the parent device designation sensor detection data. When the outside air processing unit designated for obtaining is stopped, the detection data of the sensors provided in the other outside air processing units are designated as new master unit designated sensor detection data.

  In this outside air processing system, the operation can be continued even when the outside air processing unit for obtaining the master unit designated sensor detection data is stopped.

  As described above, according to the present invention, the following effects can be obtained.

In the outside air processing system according to the first aspect, it is possible to avoid an operating state in which the outside air processing unit in the thermo-off state and the outside air processing unit in the thermo-on state coexist during the dehumidifying operation or the humidifying operation. In addition, it is possible to avoid inconsistent operation between the outside air processing units during the automatic dehumidifying / humidifying operation. In addition, it is possible to realize a large-capacity outside air processing system in which a plurality of outside air processing units all operate as one unit. Moreover, the operation of only the slave unit can be continued when the master unit is stopped by the number-limited operation.

  In the outside air processing system according to the second aspect, a large-capacity outside air in which a plurality of outside air processing units operate as a single unit by a simple installation operation of connecting a remote control communication line between the plurality of outside air processing units. A processing system can be realized.

  In the outside air processing system according to the third aspect, since the parent device is automatically set based on the unit number, the operation of manually setting the parent device can be omitted.

  In the outside air processing system according to the fourth aspect, it is possible to avoid an operation stop due to a failure of the master unit.

  In the outside air processing system according to the fifth aspect, it is possible to avoid an operation stop due to a failure of the outside air processing unit for obtaining the master unit designated sensor detection data.

  In the outside air processing system according to the sixth aspect, the operation can be continued even when the outside air processing unit for obtaining the master unit designated sensor detection data is stopped.

1 is a schematic configuration diagram of an outside air processing system according to an embodiment of the present invention. It is a front view of the outside air processing module which constitutes the outside air processing system concerning one embodiment of the present invention. It is a top view of the outside air processing module which constitutes the outside air processing system concerning one embodiment of the present invention. It is a flowchart of synchronous operation control of an outside air processing unit.

  Hereinafter, an embodiment of an outside air processing system according to the present invention will be described with reference to the drawings. In addition, the specific structure of the outside air processing system concerning this invention is not restricted to the following embodiment, It can change in the range which does not deviate from the summary of invention.

(1) Overall Configuration of Outside Air Processing System FIG. 1 is a schematic configuration diagram of an outside air processing system 1 according to an embodiment of the present invention. Although the outside air processing units 20a to 20b all have the same equipment configuration, only the outside air processing unit 20a is illustrated in detail in FIG. 1, and the illustration of the outside air processing units 20b to 20d is simplified. Yes.

  The outside air processing system 1 is an air conditioning system that performs a dehumidifying operation and a humidifying operation using outdoor air (OA) so that the humidity of the indoor air (RA) in the living room of a building becomes a target humidity. The outside air processing system 1 mainly includes an outside air processing module 10, an OA collective duct 2, an RA collective duct 3, an EA collective duct 4, and an SA collective duct 5.

  The outside air processing module 10 is an aggregate of outside air processing units configured by connecting a plurality of (in this case, four) outside air processing units 20a to 20d, and is installed on a floor in a machine room or the like of a building. ing. The outside air processing module 10 is connected to a remote controller 6 provided in a living room or the like via a remote control communication line 7. And the external air processing module 10 performs the operation | movement of a dehumidification driving | operation and a humidification driving | operation, as all the outside air processing units 20a-20d are united based on the instruction | command from the remote controller 6 as follows. . Thereby, the outside air processing system 1 constitutes a large capacity outside air processing system by connecting a plurality of small capacity outside air processing units 20a to 20d.

  The OA collective duct 2 is a duct for introducing outdoor air (OA) into the outside air processing module 10. The collective duct 3 for RA is a duct for introducing room air (RA) into the outside air processing module 10. The EA collective duct 4 is a duct for discharging exhaust air (EA) from the outside air processing module 10 to the outside of the room. The collective duct 5 for SA is a duct for supplying the supply air (SA) from the outside air processing module 10 into the living room.

(2) Outside Air Processing Module and Outside Air Processing Unit Next, the outside air processing module 10 and the outside air processing units 20a to 20d constituting the outside air processing module 10 will be described with reference to FIGS. Here, FIG. 2 is a front view of the outside air processing module 10. FIG. 3 is a top view of the outside air processing module 10.

  The outside air processing module 10 mainly includes a plurality of (in this case, four) outside air processing units 20a to 20d and a stacking base 50 for stacking and installing the outside air processing units 20a to 20d. .

<Outside air treatment unit>
The outside air processing units 20a to 20d are ceiling-suspended outside air processing units. Each of the outside air processing units 20a to 20d performs a dehumidifying operation and a humidifying operation by performing adsorption and desorption of moisture in the air using a plurality of adsorption heat exchangers each provided with an adsorbent on the surface. Is a possible unit. In addition, the outdoor air processing units 20a to 20d can take outdoor air (OA) and supply it as supply air (SA) indoors, and simultaneously take in indoor air (RA) and discharge it as exhaust air (EA) outside the room. It is a possible unit. In the following description of the configuration of the outside air processing units 20a to 20d, the configuration of the outside air processing unit 20a will be described in detail. For the configurations of the outside air processing units 20b to 20d, the subscript [a] is denoted by “b” to “d”. The description will be omitted by replacing it with "."

-Configuration of outside air processing unit-
The outside air processing unit 20a is a so-called heat source-integrated outside air processing unit composed of a unit in which all the devices constituting the refrigerant circuit are stored, and has a rectangular box-shaped unit casing 37a that is flat in the horizontal direction. ing.

  The refrigerant circuit of the outside air processing unit 20a mainly includes a compressor 21a for compressing refrigerant, first and second adsorption heat exchangers 22a and 23a provided with an adsorbent on the surface, an expansion valve 24a, and four-way switching. It is configured by being connected to the valve 25a. The expansion valve 24a is connected between one end of the first adsorption heat exchanger 22a and one end of the second adsorption heat exchanger 23a. The four-way switching valve 25a includes the other end of the first adsorption heat exchanger 22a (ie, the anti-expansion valve side end), the other end of the second adsorption heat exchanger 23a (ie, the anti-expansion valve side end), and the compressor 21a. Are connected to the suction side and the discharge side of the compressor 21a.

  The four-way switching valve 25a discharges from the compressor 21a in a first switching state in which the refrigerant discharged from the compressor 21a is circulated in the order of the first adsorption heat exchanger 22a, the expansion valve 24a, and the second adsorption heat exchanger 23a. It is possible to switch to the second switching state in which the refrigerant thus circulated in the order of the second adsorption heat exchanger 22a, the expansion valve 24a, and the first adsorption heat exchanger 22a. Specifically, the four-way switching valve 25a includes a first port 26a connected to the discharge side of the compressor 21a, a second port 27a connected to the suction side of the compressor 21a, and a first adsorption heat exchanger. It has the 3rd port 28a connected to the other end of 22a, and the 4th port 29a connected to the other end of the 2nd adsorption heat exchanger 23a. The first switching state is a state in which the first port 26a and the third port 28a communicate with each other and the second port 27a and the fourth port 28a communicate with each other (see the solid line in the four-way switching valve 25a in FIG. 1). Means. The second switching state is a state in which the first port 26a and the fourth port 29a communicate with each other and the second port 27a and the third port 28a communicate with each other (see the broken line in the four-way switching valve 25a in FIG. 1). Means.

  The first adsorption heat exchanger 22a and the second adsorption heat exchanger 23a are configured by, for example, a cross fin type fin-and-tube heat exchanger, and are adsorbed on the outer surfaces of many fins and heat transfer tubes. The material is supported by dip molding (dip molding). As this adsorbent, functionalities such as zeolite, silica gel, activated carbon, hydrophilic or water-absorbing organic polymer material, ion exchange resin material having carboxylic acid group or sulfonic acid group, thermosensitive polymer, etc. Examples include polymer materials.

  In the refrigerant circuit of the outside air processing unit 20a as described above, when the four-way switching valve 25a is switched to the first switching state, the first adsorption heat exchanger 22a functions as a condenser, and the second adsorption heat exchanger 23a Functions as an evaporator. On the other hand, when the four-way switching valve 25a is switched to the second switching state, the first adsorption heat exchanger 22a functions as an evaporator, and the second adsorption heat exchanger 23a functions as a condenser.

  The outside air processing unit 20a includes a first air inlet 32a for taking outdoor air (OA) into the unit, a second air inlet 33a for taking indoor air (RA) into the unit, And an air supply port 35a for supplying supply air (SA) blown from the inside of the unit into the living room. The first intake port 32a is connected to the OA collective duct 2 via the OA branch duct 2a. The second air inlet 33a is connected to the RA collective duct 3 via the RA branch duct 3a. The exhaust port 34a is connected to the EA collective duct 4 via the EA branch duct 4a. The air supply port 35a is connected to the SA collective duct 5 via the SA branch duct 5a. The outside air processing unit 20a includes an exhaust fan 30a arranged in the unit so as to communicate with the exhaust port 34a, an air supply fan 31a arranged in the unit so as to communicate with the air supply port 35a, And a switching mechanism (not shown) including a damper or the like for switching the air flow path.

  Further, the outside air processing unit 20a has a unit control unit 36a that controls the operation of each unit such as the compressor 21a, the expansion valve 24a, the four-way switching valve 25a, the fans 30a and 31a, and the switching mechanism (not shown). doing. The unit control unit 36a includes a microcomputer, a memory, and the like, and can communicate with the remote controller 6 and the unit control units 36b to 36d of the other outside air processing units 20b to 20d. A board on which a microcomputer, a memory, and the like for configuring the unit control unit 36a are mounted is accommodated in the electrical component box 44a. The electrical component box 44a is provided in the unit casing 37a.

-Basic operation of outside air processing unit-
Each of the outside air processing units 20a to 20d can perform the following dehumidifying operation and humidifying operation. Here, the outside air processing unit 20a will be described as an example, and the basic operation of the outside air processing units 20b to 20d will be omitted by replacing the subscript [a] with “b” to “d”.

  In the first operation during the dehumidifying operation, the refrigerant circuit is switched to the four-way switching valve 25a in the second switching state (refer to the broken line of the four-way switching valve 25a in FIG. 1 and the arrow indicated by the broken line in FIG. 1). The first adsorption heat exchanger 22a functions as an evaporator, while the second adsorption heat exchanger 23a functions as a condenser. In the second operation, the refrigerant circuit has the four-way switching valve 25a in the first switching state (see the solid line of the four-way switching valve 25a in FIG. 1 and the arrow indicated by the solid line in FIG. 1). The first adsorption heat exchanger 22a functions as a condenser while the second adsorption heat exchanger 23a functions as an evaporator.

  When the exhaust fan 30a and the supply fan 31a are activated, outdoor air (OA) as first air is taken into the unit casing 37a from the first intake port 32a, and indoor air (RA) as second air is taken. The air is taken into the unit casing 37a from the second air inlet 33a.

  Next, the first operation of the dehumidifying operation will be described. In the first operation of the dehumidifying operation, the outdoor air (OA) passes through the first adsorption heat exchanger 22a by the operation of a switching mechanism (not shown) including a damper or the like. Here, the moisture in the air is adsorbed by the adsorbent of the first adsorption heat exchanger 22a functioning as an evaporator. The adsorption heat generated at this time is used as the evaporation heat of the refrigerant in the first adsorption heat exchanger 22a. Thus, the air dehumidified by the first adsorption heat exchanger 22a is supplied into the living room as supply air (SA) from the air supply port 35a. On the other hand, room air (RA) passes through the second adsorption heat exchanger 23a. Here, when the adsorbent of the second adsorption heat exchanger 23a functioning as a condenser is heated and the moisture adsorbed on the adsorbent is desorbed, the moisture is given to the air and the second adsorption heat exchanger. The adsorbent 23a is regenerated. In this way, the air used for regeneration of the adsorbent of the second adsorption heat exchanger 23a is discharged out of the room as exhaust air (EA) from the exhaust port 34a.

  Next, the second operation of the dehumidifying operation will be described. In the second operation of the dehumidifying operation, the outdoor air (OA) passes through the second adsorption heat exchanger 23a by the operation of a switching mechanism (not shown) including a damper or the like. Here, the moisture in the air is adsorbed by the adsorbent of the second adsorption heat exchanger 23a functioning as an evaporator. The adsorption heat generated at this time is used as the evaporation heat of the refrigerant in the second adsorption heat exchanger 23a. Thus, the air dehumidified by the second adsorption heat exchanger 23a is supplied into the living room as supply air (SA) from the air supply port 35a. On the other hand, room air (RA) passes the 1st adsorption heat exchanger 22a. Here, when the adsorbent of the first adsorption heat exchanger 22a functioning as a condenser is heated and moisture adsorbed on the adsorbent is desorbed, the moisture is added to the air and the first adsorption heat exchanger. The adsorbent 22a is regenerated. In this way, the air used for the regeneration of the adsorbent of the first adsorption heat exchanger 22a is discharged out of the room as exhaust air (EA) from the exhaust port 34a.

  In the first operation of the humidifying operation, the refrigerant circuit and the four-way switching valve 25a are in the first switching state (see the solid line of the four-way switching valve 25a in FIG. 1 and the arrows indicated by the solid line in FIG. 1). The first adsorption heat exchanger 22a functions as a condenser, while the second adsorption heat exchanger 23a functions as an evaporator. In the second operation, the refrigerant circuit is set to the four-way switching valve 25a in the second switching state (see the broken line of the four-way switching valve 25a in FIG. 1 and the arrow indicated by the broken line in FIG. 1). The first adsorption heat exchanger 22a functions as an evaporator, while the second adsorption heat exchanger 23a functions as a condenser.

  When the exhaust fan 30a and the supply fan 30b are activated, outdoor air (OA) as first air is taken into the unit casing 37a from the first intake port 32a, and indoor air (RA) as second air is taken. The air is taken into the unit casing 37a from the second air inlet 33a.

  Next, the first operation of the humidifying operation will be described. In the first operation of the humidifying operation, outdoor air (OA) passes through the first adsorption heat exchanger 22a by operating a switching mechanism (not shown) made of a damper or the like. Here, when the adsorbent of the first adsorption heat exchanger 22a functioning as a condenser is heated and moisture adsorbed on the adsorbent is desorbed, this moisture is imparted to the air. In this way, the air humidified by the first adsorption heat exchanger 22a is supplied to the living room as supply air (SA) from the air supply port 35a. On the other hand, room air (RA) passes through the second adsorption heat exchanger 23a. Here, the moisture in the air is adsorbed by the adsorbent of the second adsorption heat exchanger 23a functioning as an evaporator. The adsorption heat generated at this time is used as the evaporation heat of the refrigerant in the second adsorption heat exchanger 23a. Thus, the air which gave the water | moisture content to the adsorbent of the 2nd adsorption heat exchanger 23a is discharged | emitted out of the room as exhaust air (EA) from the exhaust port 34a.

  Next, the second operation during the humidifying operation will be described. In the second operation of the humidifying operation, outdoor air (OA) passes through the second adsorption heat exchanger 23a by an operation of a switching mechanism (not shown) including a damper or the like. Here, when the adsorbent of the second adsorption heat exchanger 23a functioning as a condenser is heated and moisture adsorbed on the adsorbent is desorbed, this moisture is imparted to the air. In this way, the air humidified by the second adsorption heat exchanger 23a is supplied to the living room as supply air (SA) from the air supply port 35a. On the other hand, room air (RA) passes the 1st adsorption heat exchanger 22a. Here, the moisture in the air is adsorbed by the adsorbent of the first adsorption heat exchanger 22a functioning as an evaporator. The adsorption heat generated at this time is used as the evaporation heat of the refrigerant in the first adsorption heat exchanger 22a. Thus, the air which gave the water | moisture content to the adsorbent of the 1st adsorption heat exchanger 22a is discharged | emitted from the exhaust port 34a to the outdoor as exhaust air (EA).

(3) Control configuration and operation of the outside air processing system Next, the operation of the outside air processing system 1 having the outside air processing module 10 configured as described above will be described with reference to FIGS. 1 and 4. Here, FIG. 4 is a flowchart of the synchronous operation control of the outside air processing units 20a to 20d.

-Control configuration of outside air treatment system-
The outside air processing system 1 includes a plurality of (four in this case) unit controllers 36a to 36d and a remote controller 6 in order to perform the basic operation of the dehumidifying operation and the humidifying operation in the outside air processing units 20a to 20d. Are connected via a remote control communication line 7 (including a crossover wiring for connecting the unit control units). In addition, the outdoor air processing units 20a to 20d are provided with RA temperature / humidity sensors 9a to 9d for detecting the temperature and humidity of indoor air (RA), which is a state quantity of processing air serving as a control index.

− Automatic assignment of unit numbers to outside air processing units −
In the outside air processing system 1, the remote controller 6 performs automatic assignment processing that automatically assigns unit numbers that distinguish each other to the outside air processing units 20a to 20d. Specifically, the remote controller 6 sequentially communicates with the unit controllers 36a to 36d, and unit numbers Nu are automatically assigned to the unit controllers 36a to 36d in the order recognized by the remote controller 6. Here, unit numbers Nu of “0” to “3” are assigned to the unit controllers 36a to 36d. However, the specific value of the unit number Nu is not limited to the above.

-Synchronous operation control of outside air processing unit-
In the outside air processing system 1, the basic operation of the dehumidifying operation and the humidifying operation is performed in the outside air processing units 20 a to 20 d according to a command from the remote controller 6.

  Here, in order to operate all the outside air processing units 20a to 20d as a single unit, a parent machine in the outside air processing units 20a to 20d and a child machine in the outside air processing units 20a to 20d other than the parent machine Can be operated in synchronization. Thereby, when the parent device is performing the dehumidifying operation, the child device also performs the dehumidifying operation, and when the parent device is performing the humidifying operation, the child device is also performing the humidifying operation.

  At this time, each of the outside air processing units 20a to 20d is provided with RA temperature / humidity sensors 9a to 9d as sensors for detecting the state quantity of the processing air serving as a control index, and the operation control according to the present invention is performed. Otherwise, each of the outside air processing units 20a to 20d performs the dehumidifying operation and the humidifying operation using the detection data of the RA temperature / humidity sensors 9a to 9d that the outside air processing unit 20a to 20d has. That is, each of the outside air processing units 20a to 20d performs the dehumidifying operation and the humidifying operation so that the humidity of the indoor air (RA) detected by the RA temperature / humidity sensors 9a to 9d becomes the target humidity.

  However, because there are individual differences in the sensor, even if the master unit and the slave unit are operated in synchronization, for example, in a certain outside air processing unit, the humidity of the processing air reaches the target humidity and the thermo-off state is entered. In other outside air processing units, the humidity of the room air may not reach the target humidity and may be in a thermo-on state. In such an operating state, the entire outside air processing system 1 may not be able to stably perform the dehumidifying operation or the humidifying operation. Further, the outside air processing system 1 performs an automatic dehumidifying / humidifying operation to switch to a dehumidifying operation when the humidity of the indoor air is higher than the target humidity and to switch to a humidifying operation when the humidity of the indoor air is lower than the target humidity. In this case, a dehumidifying operation may be performed in some outside air processing units, and a humidifying operation may be performed in other outside air processing units. In such an operating state, there is a risk that contradictory operation may be performed between the outside air processing units 20a to 20d.

  Therefore, here, the following synchronous operation control of the outside air processing units 20a to 20d is performed.

  First, in step S1, an outside air processing unit that serves as a parent machine among the outside air processing units 20a to 20d is set. Here, the master unit is automatically set based on the unit number Nu assigned to the outside air processing units 20a to 20d. Specifically, among the unit numbers “0” to “3” assigned to the outside air processing units 20a to 20d, the outside air processing unit 20a having the smallest unit number is automatically set as the master unit. And outside air processing unit 20b-20d other than the outside air processing unit 20a set as a main | base station is automatically set as a subunit | mobile_unit. The process for setting the master unit based on the unit number Nu is not limited to setting the outside air processing unit 20a having the smallest unit number as the master unit. For example, the outside air processing unit having the largest unit number is used. 20d may be set as the master unit. Since the setting of the parent device is automatically performed based on the unit number Nu assigned from the remote controller 6, the work of manually setting the parent device can be omitted.

  Next, in step S2, the outside air processing unit 20a serving as the master unit detects the temperature and humidity of the indoor air (RA) that serves as a control index in the dehumidifying operation, the humidifying operation, and the automatic dehumidifying operation. Temperature and humidity sensor for detecting indoor air (RA) temperature and humidity detection data (ie, master unit designated sensor detection data) commonly used for all outside air processing units 20a to 20d (I.e., base unit designation sensor) is designated. Here, the master unit designation sensor is set based on the unit number Nu assigned to the outside air processing units 20a to 20d. Specifically, among the unit numbers “0” to “3” assigned to the outside air processing units 20a to 20d, the RA temperature / humidity sensor 9a provided in the outside air processing unit 20a having the smallest unit number is the parent. Designated as machine-designated sensor. For this reason, the detection data of the temperature and humidity of the indoor air (RA) detected by the RA temperature / humidity sensor 9a is commonly used by all the outside air processing units 20a to 20d as the master unit designation sensor detection data. Become. Note that the process of designating the master unit designation sensor based on the unit number Nu is limited to setting the RA temperature / humidity sensor 9a provided in the outside air processing unit 20a having the smallest unit number as the master unit designation sensor. For example, the RA temperature / humidity sensor 9d provided in the outside air processing unit 20d having the largest unit number may be set as the parent device designation sensor. Further, instead of designating the master unit designation sensor based on the unit number Nu, the RA temperature / humidity sensor provided in the outside air processing unit serving as the master unit may be designated as the master unit designation sensor.

  Next, in step S3, the outside air processing unit 20a as the master unit receives a command from the remote controller 6, and determines the content of the driving operation including the outside air processing units 20b to 20d as the slave units. For example, when a dehumidifying operation command is received from the remote controller 6, the content of the driving operation is determined to be a dehumidifying operation, and when a humidifying operation command is received from the remote controller 6, the content of the driving operation is determined. When the humidifying operation is determined and an automatic dehumidifying / humidifying operation command is received from the remote controller 6, the content of the operation is determined as the automatic dehumidifying / humidifying operation. Then, the outside air processing unit 20a as the parent device uses the parent device designation sensor detection data (here, the detection data of the RA temperature / humidity sensor 9a), and the operation determined based on the command from the remote controller 6 (Here, any one of dehumidifying operation, humidifying operation, and automatic dehumidifying / humidifying operation) is performed.

  Next, in step S4, the outside air processing unit 20a as the parent device commands the contents of the driving operation determined by itself to the outside air processing units 20b to 20d as the child devices as information related to the operation of the parent device. At this time, the base unit designation sensor detection data is also transmitted from the outside air processing unit 20a as the base unit to the outside air processing units 20b to 20d as the slave units. Note that the base unit designation sensor detection data and information related to the operation of the outside air processing unit 20a serving as the base unit are communicated between the outside air processing units 20a to 20d via the remote control communication line 7.

  Next, in step S5, the outside air processing units 20b to 20d serving as slave units are instructed by the master unit designation sensor detection data (here, the RA temperature / humidity sensor) in response to a command from the outside air processing unit 20a serving as the base unit in step S4. 9a), the operation synchronized with the outside air processing unit 20a as the parent device (that is, the operation commanded from the outside air processing unit 20a as the parent device) is performed.

  Thereby, in the outside air processing system 1, it is possible to avoid an operation state in which the outside air processing unit in the thermo-off state and the outside air processing unit in the thermo-on state coexist during the dehumidifying operation or the humidifying operation. Further, in the automatic dehumidifying / humidifying operation, it is possible to avoid an inconsistent operation between the outside air processing units. And the large capacity | capacitance outside air processing system 1 by which all the outside air processing units 20a-20d operate | move as an integral thing is realizable.

  Moreover, even if the RA temperature / humidity sensors 9b to 9d provided in the outside air processing units 20b to 20d are out of order, the outside air processing units 20a to 20d are provided in the outside air processing unit 20a in the operation operation. Since the detection data of the RA temperature / humidity sensor 9a being used is used, the operation can be continued.

  Further, since the communication between the outside air processing unit 20a as the master unit and the outside air processing units 20b to 20d as the slave units is performed via the remote control communication line 7, the remote control communication line 7 is connected to the outside air processing units 20a to 20d. With a simple installation operation of connecting in between, it is possible to realize a large-capacity outside air processing system 1 in which all the outside air processing units 20a to 20d operate as a single unit.

  Next, when the outside air processing unit set as the master unit fails in step S6, the process proceeds to step S1, and a new one is selected from the other outside air processing units set as slave units. Set the base unit. In step S1, since the master unit is automatically set based on the unit number Nu, an outside air processing unit having a smaller unit number is set as the master unit among the operating outside air processing units. Will be.

  Thereby, in the outside air processing system 1, it is possible to avoid an operation stop due to a failure of the master unit.

  Next, in step S7, when the outside air processing unit designated by the parent device for obtaining the parent device designation sensor detection data has failed, the process proceeds to step S2 and is provided in another outside air processing unit. The detection data of the sensor is designated as new parent device designation sensor detection data. In step S2, since the parent device designation sensor is set based on the unit number Nu, the RA temperature provided in the outside air processing unit with the smaller unit number among the outside air processing units in operation.・ The humidity sensor will be set as the base unit designation sensor.

  Thereby, in the outside air processing system 1, it is possible to avoid an operation stop due to a failure of the outside air processing unit for obtaining the master unit designated sensor detection data.

  In the outside air processing system 1, the number of outside air processing units 20a to 20d is limited by the command from a CO2 sensor or a centralized management device (not shown) provided in the room (number-limited operation). May be performed.

  At this time, if the slave unit is simply performing a synchronous operation that performs the same operation as the master unit, if a command to stop the master unit operation is issued, the slave unit will stop with the stop of the master unit operation. Therefore, it is not possible to continue the operation of only the slave unit.

  However, in the synchronous operation control of the outside air processing system 1, as shown in steps S <b> 3 to S <b> 5, the master unit determines the operation content including the slave unit, and the master unit determines the content of this operation as the master unit. The slave unit is instructed as information regarding the operation of the master unit, and the slave unit performs the operation instructed by the master unit using the master unit designation sensor detection data.

  For this reason, even if the operation of the parent device is stopped, only the child device can be operated using the parent device designation sensor detection data in accordance with a command from the parent device. Thereby, in the outside air processing system 1, even if it is a case where a main | base station is stopped, the driving | operation of only a subunit | mobile_unit can be continued.

  Further, in the synchronous operation control of the outside air processing system 1, in the limited number operation, even when the parent unit stops the outside air processing unit designated for obtaining the parent unit designation sensor detection data, in step S2, However, it is possible to designate the detection data of sensors provided in other operable outside air processing units as new parent device designation sensor detection data. Thereby, in the outside air processing system 1, even if it is a case where the outside air processing unit provided with the main | base station designation | designated sensor is stopped, a driving | operation can be continued.

  The present invention can be widely applied to an outside air processing system configured by connecting a plurality of outside air processing units.

DESCRIPTION OF SYMBOLS 1 Outside air processing system 6 Remote controller 7 Remote control communication line 9a-9d RA temperature / humidity sensor (sensor)
20a to 20d outside air processing unit Nu unit number

JP 2007-93125 A

Claims (7)

In an outside air processing system configured by connecting a plurality of outside air processing units (20a to 20d),
The master unit among the plurality of outside air processing units is provided in the outside air processing unit designated by the master unit as detection data of sensors (9a to 9d) that detect the state quantity of the processing air serving as a control index. While performing operation using the sensor detection data of the master unit that is the detection data of the sensor,
The slave unit in the plurality of outside air processing units other than the master unit performs an operation synchronized with the master unit using the master unit designation sensor detection data according to a command from the master unit.
Outside air treatment system (1). The plurality of outside air processing units (20a to 20d) are connected to each other via a remote control communication line (7) from a remote controller (6),
Information related to the master unit designated sensor detection data and the operation of the master unit is communicated between the plurality of outside air processing units via the remote control communication line.
The outside air processing system (1) according to claim 1. The master unit is set based on a unit number (Nu) assigned to the plurality of outside air processing units (20a to 20d).
The outside air processing system (1) according to claim 1 or 2. When the outside air processing unit set as the parent device fails, another outside air processing unit is set as a new parent device.
The outside air processing system (1) according to any one of claims 1 to 3. When the outside air processing unit designated by the master unit for obtaining the master unit designated sensor detection data fails, the detection data of the sensors provided in the other outside air processing units becomes new master unit designated sensor detection data. It is specified,
The outside air processing system (1) according to any one of claims 1 to 4. In the operation in which the number of operating units of the outside air processing unit is limited, when the operation of the master unit is stopped, only the slave unit is operated using the master unit designation sensor detection data according to a command from the master unit. I do,
The outside air processing system (1) according to any one of claims 1 to 5. In the operation in which the number of operating units of the outside air processing unit is limited, when the outside air processing unit designated by the master unit for obtaining the master unit designated sensor detection data is stopped, the master unit is connected to another outside air processing unit. The detection data of the sensor provided in is designated as new parent device designation sensor detection data,
The outside air processing system (1) according to any one of claims 1 to 6.

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