JPH0552389A - Absorption type air conditioning system - Google Patents

Abstract

PURPOSE:To establish an absorption type air conditioning system wherein fine control suitable for a variety of indoor environment is possible and each indoor user is convenient to use. CONSTITUTION:A system comprises absorption type cold and hot water machines 100, 200, indoor machines 51-53, 61-63, 71-76 which are grouped into zones, indoor remote controllers 91-94, and a centralized control board 10. These are connected with one another by signal lines 271-274, 281, 282, 29, whereby start/stop operation of the absorption type cold and hot water machines and changeover of cooling and heating are effected from each zone.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption type air conditioning system for general air conditioning using an absorption type cooling and heating machine.

[0002]

2. Description of the Related Art Conventionally, an air-conditioning system using an absorption chiller-heater has been disclosed, for example, in "Small and medium-sized gas air-conditioning system" (Japan Refrigeration Association, issued March 25, 1989). The hot and cold water generated by the absorption type hot and cold water machine is guided to an air handling unit or a fan coil unit as an indoor unit, where heat is exchanged with the air to generate cold and hot air for heating and cooling. The load condition information on the indoor side for controlling the absorption chiller-heater with this system is only the information obtained from the chilled water that only links the indoor unit and the absorption chiller-heater. The capacity of the absorption chiller / heater was controlled using only the detected value of the chiller / heater outlet temperature of the water maker. Then, other operations, monitoring, and control of the absorption chiller-heater and each indoor unit are performed independently. Further, in the absorption chiller-heater, the cooling and heating capacity control range is restricted by the capacity control range of the burner which is the heat source input device. Usually, the lower limit of the cooling and heating capacity control range of the absorption chiller-heater is about 30%.

[0003]

In the conventional absorption type air conditioning system described above, there is no choice but to perform ON-OFF control for cooling and heating loads below the lower limit of the capacity control range of the absorption type chiller-heater. Inability to perform detailed control to operate the absorption chiller-heater efficiently and safely according to the operating state of the indoor units distributed on the table, and to operate, monitor and control the state of the entire system in one place. It is difficult to do this, and it is difficult to obtain the air conditioning adapted to the environment because the user in the room cannot directly approach the absorption chiller-heater. There were many problems due to the fact that the elements were not connected to each other and operated independently. Further, Japanese Patent Laid-Open No. 64-54164 discloses that
Although it has been proposed to use the average temperature of the entire zone for the temperature display of the air conditioning monitoring control device, it does not propose a means for controlling the capacity of the air conditioning system using the absorption chiller-heater. This is one of the reasons why a multi-air conditioning system, which is the mainstream of electric air conditioners, has not been constructed in the air conditioning system using the absorption chiller-heater today.

The object of the present invention is to control the air conditioning of the room including the operation control of the absorption chiller / heater from individual indoor units, and also to perform the centralized control of the entire system. It is to provide an absorption type air conditioning system that can always be operated efficiently and safely.

[0005]

The above-mentioned object is to divide a plurality of indoor units into one grouped zone and operate and control the zone unit. This zone is formed with the lower limit of the capacity control range of the absorption chiller-heater as the minimum unit, and one zone has the same indoor environment (south facing, north facing, etc.), usage conditions (office work of the same company). It is achieved by making a group of indoor units that are operated under a place. Further, the above-mentioned object is to divide a plurality of indoor units to which cold / hot water is supplied from the absorption chiller / heater into a plurality of zones, set one master indoor unit in each of the zones, and install a remote controller, In an absorption type air conditioning system in which one system or a plurality of small air conditioning systems are installed by connecting a signal line between the parent indoor unit and another indoor unit in the same zone and the absorption type water heater / cooler, The remote controller has an operation control function including operation / stop of all indoor units in the zone, setting of cooling / heating, and display of the setting state, and is connected to all of the absorption chiller-heater by signal lines. The centralized control monitoring board is provided, and the centralized control monitoring board is
Achieved by having an operation control function for each zone that the remote controller has for each zone, and an operation control function that includes simultaneous operation / stop for all indoor units in all zones, setting of cooling / heating and display thereof. To be done.

[0006]

According to the present invention, since the capacity of one zone is within the capacity control range of the absorption chiller-heater, detailed control of the absorption chiller-heater and the indoor unit adapted to the load condition in the end room is performed. Can be done. Further, since one zone is a set of indoor units that are operated under the same indoor environment and usage conditions, indoor comfort can be maintained by performing operation and control for each zone. Further, according to the present invention, the user in the room operates the remote controller at hand to operate / stop the absorption chiller-heater in units of zones,
It is possible to switch between cooling and heating, improving individual decentralized usability, and installing a centralized monitoring panel allows operation, control, and monitoring of the entire system at one place. You can Furthermore, since the absorption chiller-heater can capture the operating status of each indoor unit via the signal line, when it is found from the signal that the cooling low-load condition has been reached, the regenerator in the absorption chiller-heater It is also possible to stop the input to the load and respond to the load by the residual cooling power, and also to prevent the supercooling accident of the absorption chiller-heater against a sudden decrease in the load.

[0007]

EXAMPLES The present invention will be described in detail below with reference to examples. FIG. 1 shows an embodiment of the system of the present invention.
This is a system in which two absorption chiller-heaters are installed and six indoor units are connected to each absorption chiller-heater. The cold / hot water generated by the absorption-type cold / hot water generators 100, 200 is cooled / hot water pipe 10
3, 203 through indoor units 51-53, 61-63, 7
1 to 76, heat is exchanged with air in each indoor unit, cold and hot air is supplied to the room for cooling and heating, and the cold and hot water that has left the indoor unit is absorbed and cooled by the cold and hot water pumps 104 and 204.
Returned to 0,200.

In this embodiment, 12 indoor units are 3 units.
It is divided into units, and in the following, the units are divided into the first zone, the second zone, the third zone,
It is called the fourth zone. These zones are, for example, the same company, same office, large conference room,
It is formed by setting a plurality of indoor units used in a relatively large air-conditioned space with similar environmental conditions and usage conditions, such as an entrance gallery, as one zone, and operation control is executed in units of this zone. It Absorption chiller / heater 10
0 supplies cold / hot water to the first zone and the second zone, and the absorption chiller / heater 200 supplies cold / hot water to the third zone and the fourth zone. In addition, the indoor units 51 to 53 of the first zone and the second unit
The indoor units 61 to 63 of the zones are air-handling units, and the indoor units 71 to 76 of the third zone and the fourth zone.
Is a fan coil unit. Further, the air handling units 51 to 53 of the first zone are of a blow-out control type for controlling the static pressure of the air blowing port to be constant, and the air handling units 61 to 63 of the second zone are of a suctioned air temperature. A suction control type for controlling is used, and the fan coil units 71 to 76 of the third and fourth zones are all suction control type. It is preferable that the total cooling and heating capacity of the indoor units belonging to each zone is equal to or higher than the lower limit of the capacity control range of the absorption chiller-heater.

Cold and hot water bypass three-way valves 81 to 84 are installed in each of the above zones. These cold / hot water bypass three-way valves are used to supply cold / hot water sent to each zone to the zone, or to bypass the zone and return it to the absorption-type cold / hot water machine. It controls the flow of each zone. Further, remote controllers 91 to 94 are installed for each zone, and one of the plurality of indoor units in each zone is connected to the parent indoor unit as a parent indoor unit. For the child indoor units other than the parent indoor unit, the parent indoor unit and the signal line 27
1 to 274 are connected. On the other hand, absorption chiller / heater 1
00 and 200 are connected to the parent indoor units of the first and second zones and the third and fourth zones by signal lines 281 and 282, respectively. Further, a central control panel 10 that integrates all of these is installed, and the absorption chiller-heaters 100, 20 are installed.
0 and the signal line 29 are connected. Remote control
La 91 (similar to other controllers) is for operating / stopping the indoor unit in the same zone and the absorption chiller / heater supplying cold / hot water to the zone, and for cooling / heating mode. It is provided for setting operation, room temperature setting operation, manual setting of indoor unit handling air volume, timer time setting operation for schedule operation and switching operation of on / off timer, reset operation in case of failure, etc. .. In addition, operation / stop display, room temperature set value display, indoor unit air volume setting value display, cooling / heating mode display, batch failure display at the time of failure and indoor unit number and content of failure display, The timer setting status can be displayed, and further, the operating data of each part of the air conditioning system at the present time and the past operating data can be monitored. Also,
The central control board 10 controls the remote controllers 91 to 94 for all the zones connected to the central control board 10.
Shall have the same functions as those possessed by. Therefore, in one place in the center, each zone at the end of the system
Information can be collected from each zone by issuing commands to the zone. In addition, simultaneous operation / stop of all zones, simultaneous cooling / heating mode switching, and operation status display can be performed. As a result, the central control panel 10 can control and monitor the entire air conditioning system. In this way, the remote controller, the main indoor unit,
Since the child indoor unit, absorption-type chiller / heater, and central control panel are all connected by signal lines, it is possible to control and monitor the status of each part of the system from the upper level to the lower level. Furthermore, the signal transmitted between these devices is a serial transmission signal, so that the signal line can be doubled, and the cost of electrical work can be reduced.

The cooling water of the absorption chiller-heaters 100, 200 passes through the cooling water pipes 111, 211 and the cooling tower 112,
After being guided to 212, where it is cooled by air, it is returned to the absorption chiller-heaters 100 and 200 by cooling water pumps 113 and 213, respectively. These absorption chiller
The cooling tower, the cooling water pump and the cooling water pipe may be an integrated pack type absorption chiller / heater.

The operation of the system configured as described above will be described first from the air conditioning control method in the cooling mode for each zone. In the first zone, the absorption chiller-heater 1
A part of the cold water generated at 00 is sent to the first zone and a part is sent to the second zone. The cold water sent to the first zone passes through the cold / hot water bypass three-way valve 8 and is distributed to the three air-handling units 51 to 53. The cold water that has entered the air-handling unit 51 (the following operations are the same for the other units 52 and 53) exchanges heat with the air sent by the fan 15 in the air-water heat exchanger 14 to generate cold air. On the other hand, the cold water whose temperature has risen by exchanging heat with air leaves the air-handling unit 51,
In the other two air-handling units 52 and 53, heat is exchanged with the air in the same manner to merge with the cold water that has come out, and further, in the second zone, it is absorbed by the cold / hot water pump 104 together with the cold water that has worked similarly. It is returned to the water chiller / heater 100, cooled here, and again used for cooling. By the way, air-
The cold air exiting the handling unit 51 is the air duct 1
6. Automatic air flow restriction mechanism (hereinafter, variable air flow controller: VA
V) 17 is blown into the room from the indoor outlet 24, and is used for cooling the room. Then, the air whose temperature has risen due to the load in the room is used as the indoor suction port 18
Further, it returns to the air-handling unit 51 through the air duct 19 and again exchanges heat with cold water in the heat exchanger 14 to become cold air. The VAV 17 has an indoor temperature sensor 2 for each of them.
0 and the room temperature setting device 21 are provided, and the sensor 20
The room temperature is set by controlling the amount of cold air supplied to the room by opening and closing the air flow restricting mechanism (for example, damper) of the VAV 17 by comparing the room temperature signal detected in step 3 with the room temperature set value set in the setting device 21. I try to keep the value. By controlling the VAV 17, the static pressure of the air outlet 24 of the air-handling unit 51 changes. For example,
When the VAV 17 throttles the air volume, the static pressure of the outlet 24 rises. Therefore, the static pressure is detected by the static pressure sensor 22, and when it is judged that the air volume is excessive, the rotation speed of the fan 15 is lowered. As a result, the power of the fan 15 is reduced.

The above control is independently performed in all the air handling units 51 to 53 in the first zone. That is, each room is individually controlled while having a unit called a zone. On the other hand, the entire zone 1 is controlled by the remote controller 91 or the centralized control panel 10 as described above. The control of the cold / hot water bypass three-way valve 81 is as follows. That is, the suction temperature sensor 23 is installed at the air suction ports of the air-handling units 51 to 53, and the detected temperature signal and the setting signal of the suction temperature thermo set by the remote controller 91 are set. In comparison with the parent indoor unit 51, when the actual suction temperatures of all the indoor units 51 to 53 are lower than the set value, and when the remote controller 91 stops the indoor unit of the zone. The cold / hot water bypass three-way valve 81 is controlled so that the cold water from the absorption-type cold / hot water machine 100 is bypassed without flowing into the zone, and is returned to the absorption-type cold / hot water machine 100. On the contrary, when the actual suction temperature of a single indoor unit rises above a certain value with respect to the set value, and the indoor unit of the zone is operated by the remote controller 91. In some cases, the cold water is operated to flow into the zone. As a result, cold water is supplied only when cold water is required in each zone, and it is possible to prevent excessive cooling in the room and dew condensation in the indoor unit. The control method of the cold / hot water bypass three-way valve 8 is the same for the second, third, and fourth zones described below.

Next, the control of the second zone will be described.
In the first zone, the air handling units 51 to 51
53 is a blow-out control type in which the static pressure of the air blow-out port is controlled to be constant, whereas in the second zone, the air-handling units 61-63 use a suction control type in which the temperature of the sucked air is controlled. The difference is that Part of the cold water generated in the absorption chiller-heater 100 is sent to the second zone and distributed to the three air-handling units 61 to 63, and heat exchange with the air is performed in the same manner as the first zone. Generates cold air. The cool air exiting the air-handling unit 61 (similarly for others) passes through the air duct 16 and is blown out into the room through the indoor outlet 24. The air-handling unit 61 detects the suction temperature with the suction temperature sensor 23 installed in the air suction port 18, and the value and the suction temperature set value set by the remote controller 92 (that is, room temperature setting). Value) and the rotational speed of the fan 15 is controlled stepwise or continuously so that the temperature in the room approaches the set value, and the amount of air supplied to the room is changed. As a result, the room temperature can be maintained in a state desired by the user. The above control is similarly performed independently in all the air handling units 61 to 63 in the second zone.

Next, the control of the third zone will be described.
The third zone uses the suction control type air handling units 61 to 63 for controlling the temperature of the suction air in the second zone, while the suction control type fan coil unit 71 is also used. The difference is that it uses ~ 73. Part of the cold water generated by the absorption chiller-heater 200 is sent to the third zone, and part of it is sent to the fourth zone. The cold water sent to the third and fourth zones is distributed to the three fan coil units 7 through the cold / hot water bypass three-way valve 83, and heat exchange with the air is carried out similarly to the first and second zones. Generates cold air. Fan coil unit 71 ~
The cold air exiting 73 blows out into the room. One room temperature sensor 25 is installed in the third zone, and the room temperature signal detected here and the room temperature set value set by the remote controller 93 are compared by the parent fan coil unit 71. Then, the rotation speed of the fan 15 of each fan coil unit 71-73 is controlled stepwise or continuously so that the room temperature approaches the set value, and the amount of air supplied to the room is changed. As a result, the room temperature can be maintained in the state desired by the user. Note that the control here is different from the case of the air-handling unit, and it is assumed that all the fan coil units 71 to 73 in the same zone are controlled in the same manner by the signal from the parent fan coil unit 71.
It is also possible to control this independently for each fan coil unit, as in the first and second zones. The fourth zone is exactly the same as the third zone.

The control method from the first zone to the fourth zone has been described above taking the case of cooling as an example, but the same applies to heating. And as can be seen from the above description, according to this embodiment, the indoor unit can be any of a blow-out control type air-handling unit, a suction control type air-handling unit, and a fan coil unit.
If the inside of the same zone is unified to any one, a system in which they are mixed can be selected according to the usage conditions on the indoor side.

Next, as in this embodiment, when a plurality of zones are present in one absorption chiller-heater, a plurality of remote controllers are used to start / stop the absorption chiller-heater. The control logic when the cooling / heating mode command is issued will be described. In this embodiment, a command is sent from the two remote controllers 91 and 92 to the absorption chiller-heater 100, but the absorption-type chiller-heater 100 is operated by the following logic to determine the start / stop. To do. (1) Remote control for both the first zone and the second zone
When the la 91 and 92 are in the state of outputting the stop command,
When an operation command is output from one or both of the remote controllers 91 and 92, the absorption chiller-heater 100 starts operation. (2) When one or both of the remote controllers 91 and 92 are in the operation command output state, the absorption type water heater / cooler 100
When all of the remote controllers that are in the operation command output state output a stop command while the engine is operating, the absorption chiller-heater 100 stops.

In the above (1) and (2), the number of zones connected to one absorption type chiller-heater is, for example, n zones (n> 2).
The same applies even if there is any, and as long as an operation command is output from the remote controller of at least one zone, the absorption chiller-heater is operated.

Next, the cooling / heating mode is determined by the absorption chiller-heater 100 according to the following logic. (1) Remote controller 91 for both the first and second zones,
When 92 is in the stop command output state, one or both of the remote controllers 91, 92 are operated after the cooling mode is designated by the remote controllers 91, 92 for both the first and second zones. Absorption type water cooler / heater 10
0 operates in the cooling mode. (2) When both the remote controllers 91 and 92 are in the stop command output state, after the heating mode is specified by the remote controllers 91 and 92 for both the first and second zones, the remote controller is
When one or both of the controllers 91 and 92 are switched to the operation command output state, the absorption chiller-heater 100 is heated by the heating motor.
Drive in the car. (3) A remote controller 91 for both the first and second zones,
92 is in the operation command output state, and the absorption chiller-heater 100
Is operating in the cooling mode, when the remote controller 91 or 92 of the first zone or the second zone turns to the heating mode command, the absorption chiller-heater 100 is Although the operation is continued in the cooling mode, an alarm is output to the remote controller that has switched to the heating mode. However, although it is rare in practice, when both zones simultaneously change to the heating mode command, the absorption chiller-heater 100 is switched to the heating mode. (4) Remote controller 91 for both the first and second zones,
92 is in the operation command output state, and the absorption chiller-heater 100
Is operated in the heating mode, when the remote controller 91 or 92 of the first zone or the second zone turns to the cooling mode command, the absorption chiller-heater 100 is The operation is continued in the heating mode, but an alarm is output to the remote controller that has switched to the cooling mode. However, although it is rare in reality, when both zones simultaneously change to the cooling mode command, the absorption chiller-heater 100 is switched to the cooling mode. (5) Both the first and second zones are remote controllers 91,
When 92 is in the stop command output state, if the operation command is output by the remote controller 91 or 92 of one zone in the cooling mode designated state, the absorption chiller-heater 100 will be in the cooling mode. To start driving. After that, when the remote controller of the other zone outputs an operation command in the state of designating the heating mode, the absorption chiller-heater 100 continues to operate in the cooling mode, but the above-mentioned heating mode. An alarm is output to the remote controller that issued the command. (6) Both the first and second zones are remote controllers 91,
When 92 is in the stop command output state, if the operation command is output by the remote controller 91 or 92 of one zone in a state in which the heating mode is designated, the absorption chiller-heater 100 will operate in the heating mode. To start driving. After that, when the remote controller of the other zone outputs an operation command in the state of the cooling mode designation, the absorption chiller-heater 100 continues to operate in the heating mode, but the cooling command Of the person who issued the
An alarm is output to the controller.

The above control logic is the same even when the number of zones connected to one absorption type chiller / heater is n zones (n ≧ 2), and the remote control which has output the operation command first. Tocontro
The absorption chiller-heater is operated in accordance with the cooling / heating mode specified in (1).

Lastly, the maximum input restriction to the absorption chiller-heater by the load factor shown in FIG. 2 will be described. The absorption chiller-heater can control the cooling / heating capacity by controlling the input to its constituent regenerator.
The absorption chiller / heater in the conventional central air conditioning system is
The cold water outlet temperature is detected and the input to the regenerator is controlled accordingly. With this method, it is difficult to properly follow a sudden change in load, and it is not suitable for an individual distributed air conditioning method. In the present invention, as a means for realizing an individual distributed air conditioning system using an absorption chiller-heater, the absorption chiller-heater according to the load factor calculated based on the total capacity of the indoor units currently in operation. By limiting the maximum amount of input to the regenerator of the machine and controlling the capacity of the absorption chiller-heater corresponding to the load, it is possible to respond appropriately to sudden changes in the number of operating indoor units. FIG. 2 shows an example of maximum input limitation by proportional control for this purpose. The horizontal axis shows the load factor and the vertical axis shows the maximum input to the regenerator. Here, the load factor is a value obtained by dividing the total rated capacity of the operating indoor units by the rated capacity of the absorption chiller-heater in the indoor unit connected to one absorption chiller-heater. , Calculated by the following formula. Load factor = Σ (rated capacity of operating indoor unit) /
(Rated Capacity of Absorption Type Hot Water Heater) Information from the indoor unit is transmitted from the child indoor unit to the parent indoor unit by signal lines 271 to 274, and further from the parent indoor unit to the absorption type hot water heater 10.
0, 200 are transmitted by signal lines 281, 282, and the load factor is calculated in the absorption chiller-heater. Then, according to this value, the maximum value of the input to the regenerator is limited to 30 to 100% as shown in FIG. Here, the input to the regenerator is limited to 30%, for example, in the case of an absorption chiller-heater using gas as an input, the gas burner which is the input device thereof.
This is because the control range is generally in this range, and the slope of the straight line shown in this figure may be determined depending on the control range of the input device used and the partial load characteristics of the absorption chiller-heater. On the other hand, when the load factor is 30% or less, the input is limited to the lower limit of 30% of the control range of the input device. In that state, when the cold water outlet temperature of the absorption chiller-heater falls below the allowable value (for example, 6 ° C), the input is stopped, the absorption chiller-heater is set to the diluted operation state, and Low load is provided by residual cold power during dilution operation. If the residual cold power disappears while the low load is being dealt with by the residual cold power during the dilution operation as described above, the cold water outlet temperature rises. Then, when the chilled water outlet temperature rises to a value (for example, 10 ° C.) to which the differential which is the allowable value is added, the input to the absorption chiller-heater is started again. However, also here, the input is limited to 30% until the load factor becomes 30% or more.

As described above, when the load is lower than the lower limit of the control range of the absorption chiller / hot water generator input device, the absorption / chiller / hot water generator is operated / stopped and the residual cooling power during the dilution operation is accompanied. However, the fact that the absorption chiller-heater has a diluted residual cooling power means that when the load suddenly drops, the cold water temperature further drops, despite stopping the input as described above. In the worst case, freezing of cold water or freezing of the evaporator refrigerant in the absorption chiller-heater machine may occur.
In the present invention, in order to solve this problem, the cold water temperature during the dilution operation, and the evaporator refrigerant in the evaporator of the absorption chiller-heater when the temperature of the evaporator refrigerant in the machine falls below the limit allowable value of supercooling. We adopted a control to stop the circulation of. As a result, the spraying of the refrigerant to the cold water pipe in the evaporator of the absorption chiller-heater is stopped, the cooling of the cold water and the refrigerant is lost, and these can be prevented from freezing.

[0022]

According to the present invention, finely-tuned control adapted to various indoor environments is possible, and individual distributed air conditioning using an absorption chiller / heater which is convenient for users in each room can be realized. ..

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an absorption air conditioning system of the present invention.

FIG. 2 is an explanatory diagram of a control method of maximum input limitation of the absorption chiller-heater used in the embodiment of FIG.

[Explanation of symbols]

 100 Absorption type water heater / cooler 200 Absorption type water heater / heater 51 Air-handling unit 52 Air-handling unit 53 Air-handling unit 61 Air-handling unit 62 Air-handling unit 63 Air-handling unit 71 Fan coil unit 72 Fan coil unit 73 fan coil unit 74 fan coil unit 75 fan coil unit 76 fan coil unit 81 cold / hot water bypass three-way valve 82 cold / hot water bypass three-way valve 83 cold / hot water bypass three-way valve 84 cold / hot water bypass three-way valve 91 remote controller 92 remote controller -La 93 Remote controller 94 Remote controller 10 Centralized control panel 17 Variable air volume control device 20 Indoor temperature sensor 21 Indoor temperature setter 22 Pressure sensor 23 intake air temperature sensor 25 temperature sensor 271 signal line 272 signal line 273 signal line 274 signal line 281 signal line 282 signal line 29 signal line

Claims (12)

[Claims] 1. A plurality of indoor units to which cold / hot water generated from an absorption chiller / heater is supplied are operated under the same indoor environment, usage conditions, etc. as one unit. Divided into zones, and the total cooling and heating capacity of the indoor units belonging to each zone is equal to or higher than the lower limit of the capacity control range of the absorption chiller-heater, and the indoor air conditioning is controlled in units of the zones. Absorption type air conditioning system. 2. A plurality of indoor units to which cold / hot water generated from an absorption chiller / heater is supplied are operated under the same indoor environment, usage conditions, etc. And the total indoor cooling and heating capacity of the indoor units belonging to each zone is equal to or higher than the lower limit of the capacity control range of the absorption chiller-heater, and one master indoor unit is defined in each of the zones. And an absorption type air conditioning system in which one system or a plurality of small air conditioning systems in which the parent indoor unit is connected to the indoor unit in the same zone and the absorption type water heater / cooler by a signal line are installed. In the absorption type air conditioning system, the remote controller has an operation control function including operation / stop of all indoor units in the zone, setting of cooling / heating, and display of the setting state. 3. A plurality of indoor units to which cold / hot water is supplied from an absorption chiller / heater are divided into a plurality of zones, one master indoor unit is defined in each of the zones, and a remote controller is installed. In the absorption type air conditioning system in which one system or a plurality of small air conditioning systems in which the indoor unit and other indoor units in the same zone and the absorption type chiller / heater are connected by a signal line, The controller operates / stops all indoor units in the zone, cools /
An absorption type air conditioning system having an operation control function including setting of heating and display of the setting state. 4. A central control monitoring board connected to all of the absorption chiller-heaters by signal lines is provided, and the central control monitoring board operates in units of zones of the remote controller for each of the zones. 3. A control function and an operation control function including simultaneous operation / stop for all indoor units in all zones, setting of cooling / heating and display thereof.
Or the absorption type air conditioning system described in 3. 5. A three-way valve is provided at a connecting portion between the zone and the corresponding absorption chiller-heater, and when all indoor units in the zone are in a stopped state or when all indoor units are instructed to stop by a remote controller of the zone. When it is issued, the cold and hot water from the corresponding absorption chiller-heater is bypassed by the three-way valve, returned to the absorption chiller-heater, and not sent to the indoor unit. The absorption type air conditioning system according to 2 or 3 or 4. 6. The indoor unit is an air unit in one of the zones.
The absorption type air conditioning system according to any one of claims 2 or 3 or 4 or 5, wherein the absorption type air conditioning system is integrated into either a handling unit or a fan coil unit. 7. The absorption type air conditioner according to claim 6, wherein in the zone having the unified type indoor unit, the amount of air blown out from each indoor unit is controlled so that the room temperature becomes the set value. system. 8. The unified indoor unit is an air handling unit, and each air handling unit has an air volume control mechanism between its air outlet and an indoor air outlet, and the air handling unit air outlet. 7. The absorption type air conditioning system according to claim 6, wherein the air volume control mechanism is controlled so that the static pressure of the mouth becomes constant. 9. The absorption-type chiller-heater operates in a different mode from another remote controller while operating in a cooling or heating mode in response to a command from a remote controller of the zone that supplies the chilled-hot water from itself. Even if the operation command is output, the operation is continued without changing the mode until then, and when the stop command is output from all the remote controllers of the zone supplying the hot and cold water from the own machine, the operation is stopped. The absorption type air conditioning system according to claim 2, wherein the absorption type air conditioning system is stopped. 10. The absorption-type chiller-heater takes in the sum of the cooling and heating capacities of the indoor units operating in the zone from the parent indoor unit of each zone supplying the chilled-hot water from the own unit, and calculating the sum of the sums. The load factor is calculated by dividing the total of each zone by the cooling and heating capacity of the own device, and the maximum allowable input to the regenerator of the own device is determined by a predetermined relationship according to the load factor. Item 5. The absorption air conditioning system according to any one of items 2 or 3 or 4. 11. When the maximum allowable input to the regenerator obtained from the load factor during operation in a cooling mode is lower than the minimum allowable input to the regenerator of the absorption chiller-heater, or When the cold water outlet temperature of the absorption chiller-heater falls below a predetermined allowable value, the input to the regenerator is stopped and the absorption chiller-heater performs a dilution operation, and the residue during the dilution operation The absorption type air conditioning system according to claim 10, wherein the cooling load is satisfied by the capacity. 12. When the absorption chiller-heater has a diluting operation, when the chilled water outlet temperature of the absorption chiller-heater and the evaporator refrigerant therein fall below a limit permissible value for supercooling, the evaporation is performed. The absorption type air conditioning system according to claim 11, wherein the circulation of the cooling medium is stopped, and the generation of the residual cooling power is stopped.