JPH09113064A - Air conditioner system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to conduct the energy conservation while assuring comfortableness by using both a radiation type air conditioner and a diffusing type air conditioner. SOLUTION: The air conditioner system couples a heat pump 1, a water heat exchanger 3 and an air heat exchanger 4 via a first tube 1c, heat exchanges by heating medium flowing through the tube 1c, couples a cold heat storage tank 5 for thermal cold heat storing for cooling or heating, an air conditioner for cooling or heating and the exchanger 3 via a second tube 19, cools or heats by the water flowing through the tube 19 or antifreeze solution, and controls the operations of the units by a controller 9. In this case, as the conditioner, a radiation type air conditioner 6 and a diffusing type air conditioner 7 are provided. The controller 9 initially operates both the conditioners 6 and 7, and then stops only the operation of the conditioner 7 at the time of predetermined temperature at the indoor temperature or elapsing a predetermined time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner in which heat is exchanged between a heat pump, a water heat exchanger and an air heat exchanger by a heat medium, and cold heat is stored in a cold heat storage tank. The present invention relates to an air conditioning system which performs heating and cooling by sending energy to the air conditioning system.

[0002]

2. Description of the Related Art Conventionally, there is a system that uses a heat pump (heat source) for air conditioning and hot water supply. Heat pump
It has a compressor (compressor) and an expansion valve inside, and uses a heat exchanger such as a water heat exchanger, an air heat exchanger, piping connecting these, and a CFC flowing in the piping. The direction is controlled by a valve installed on the pipe, and heat is released or absorbed to perform air conditioning or hot water supply. This heat pump is a heat source device that can utilize outside air and exhaust heat as a heat source and has a high energy saving effect.Generally, it is connected to a radiant type air conditioner or a blowout type air conditioner or both and a cold storage heat tank to configure an air conditioning system for cooling and heating. can do.

[0003]

However, in the above-mentioned air conditioning system, when only the radiation type air conditioner is used as the air conditioner, it takes a lot of time to bring it into a predetermined cooling and heating state, and dew condensation occurs. Is likely to occur. Further, when only the blowout type air conditioner is used, there is a bad health effect such that the blown wind directly hits the human body. When both air conditioners are used, there is a problem that dew condensation still cannot be prevented and energy consumption increases.

The present invention has been made in view of the above points, and an object of the present invention is to use both a radiation type air conditioner and a blowout type air conditioner while ensuring comfort. It is to provide an air conditioning system that can save energy.

[0005]

According to the first aspect of the present invention,
A heat storage heat exchanger, a water heat exchanger, and an air heat exchanger are connected by a first pipe, heat is exchanged by a heat medium flowing in the pipe, and a cold storage heat tank for storing cold heat for cooling and heating, and An air conditioner that performs cooling and heating and the water heat exchanger are connected by a second pipe, and cooling and heating is performed by water or an antifreeze liquid flowing in the second pipe, and the operation of each device is controlled by the control unit. In the air conditioning system, a radiation type air conditioner and a blowout type air conditioner are provided as the air conditioners, and the control unit first operates both the radiation type air conditioner and the blowout type air conditioner, and then the blowout type air conditioner. The feature is that only one of the operations is stopped.

According to a second aspect of the present invention, in the invention of the first aspect, both the radiation type air conditioner and the blowout type air conditioner are first operated, and after the room temperature reaches a predetermined temperature, the blowout type air conditioner is operated. The feature is that only one of the operations is stopped.

According to a third aspect of the present invention, in the first aspect of the invention, both the radiation type air conditioner and the blowout type air conditioner are initially operated, and the operation of the blowout type air conditioner is performed when a predetermined time has elapsed. It is characterized by stopping only.

According to a fourth aspect of the present invention, in addition to the first to third aspects of the present invention, the radiation type air conditioner and the blowing type air conditioner are installed on a ceiling of a room, and a dew condensation sensor is added to the ceiling surface. When the occurrence of dew condensation is detected by the dew condensation sensor, the operation of the radiant air conditioner is stopped, or the operation of blowing only air is performed.

According to a fifth aspect of the present invention, in addition to the first to third aspects of the present invention, the radiation type air conditioner and the blowout type air conditioner are installed on a ceiling of a room, and a dew condensation sensor is added to the ceiling surface. , When only the radiation type air conditioner is operating and the condensation sensor detects the occurrence of condensation,
The radiant air conditioner is adapted to perform an operation of blowing air only by blowing air.

According to a sixth aspect of the present invention, in the case of the first to fifth aspects of the invention, when the radiation type air conditioner is turned off while only the radiation type air conditioner is operating. It is characterized in that it is turned off after the air blowing operation has been carried out for a time.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an air conditioning system showing an example of an embodiment of the present invention. 1 is a heat pump (heat source device), a compressor (compressor)
1a, expansion valve 1b, piping 1c, heat pump controller 1d, compressor controller 1e.
3 is a water heat exchanger and 4 is an air heat exchanger. Each exchanger and the heat pump 1 are connected by a pipe 1c.
A heat medium such as CFC flows in the pipe 1c, and the heat medium is compressed.
Heat exchange is performed by expansion, liquefaction, and vaporization, and cooling and heating are performed. In the present embodiment, the pipe 1c is simplified for convenience of description, but in reality, the direction of the flow of the heat medium is changed during cooling or heating, and the heat exchanger used depending on the situation. In order to change the combination of 3 and 4, a large number of valves are provided and the structure is complicated. The compressor controller 1e controls the inverter frequency of the compressor 1a.

Both 6 and 7 are air conditioners (fan coil units: FCU), 6 is a radiant air conditioner, and 7 is a blowout air conditioner. The air conditioning operation in the air conditioning system of the present embodiment is performed via the water heat exchanger 3 between the heat pump 1, the cold storage heat tank 5, and the air conditioners 6 and 7. First, the operation during cooling will be described. The heat pump 1
At, the heat medium atomized at low pressure by the expansion valve 1b is sent to the water heat exchanger 3. On the air conditioning side with the cold storage heat tank 5, the water flowing through the cold storage heat tank 5, the piping 19, and the mixing tank 21 by the air conditioning side pipe 19 and the circulation pump 20 (however, the inside of the cold storage heat tank 5 must be 0 degrees or less during cooling). The water heat exchanger 3 has an antifreeze liquid (brine water).
Sent to In the water heat exchanger 3, the atomized heat medium takes heat from the brine water in the pipe 19 and vaporizes it. As a result, the brine water in the pipe 19 is cooled.
The cooled brine water is temporarily stored in the cold storage heat tank 5, or is directly sent to the mixing tank 21. The mixing tank 21 is further provided with air conditioners 6, 7 and pipes 19a, 19
b and the pump 15 for the air conditioner are provided, and the pipe 1
Cold water is sent from 9a to the air conditioners 6 and 7 by the pump 15 and allowed to cool, and warmed water returns to the mixing tank 21 through the pipe 19b. In the mixing tank 21, the brine water on the side of the water heat exchanger 3 and the cold storage heat tank 5 and the brine water on the side of the air conditioners 6 and 7 are mixed, and the direct cooling water from the water heat exchanger 3 or By mixing the cooling water from the cold storage heat tank 5, the brine water sent to the air conditioners 6 and 7 is cooled to an appropriate temperature and cooled. Generally, the temperature of the brine water cooled by the water heat exchanger 3 is about -3 degrees,
The temperature of water mixed in the mixing tank 21 and sent to the air conditioners 6 and 7 is adjusted to about 5 to 7 degrees. Further, during cooling, since the bag 5a containing water in the cold storage heat tank 5 freezes below the freezing point, cold storage energy can be stored as latent heat. The three-way valve 13 is used to switch whether the water heat exchanger 3 directly sends the mixed heat to the mixing tank 21 or temporarily stores it in the cold storage heat tank 5.

In the air conditioners 6 and 7, the cold water (brine water) sent through the pipe 19a is used for the coils 6b and 7b.
Send to By the fans 6a and 7a, the air in the ceiling 37
And the indoor air 34 is sucked in through the intake ports 6f and 7f,
After passing through the coils 6b and 7b, the air is blown again into the room and the ceiling through the blower ports 6g and 7g. Here, the ceiling air 37 and the room air 34 are cooled when passing through the coil 7b cooled by cold water. The valves 6d and 7d are opened when used and closed when not used. In this way, by applying cooling energy to the air, the warmed brine water returns to the mixing tank 21, and the water heat exchanger 3
Alternatively, it is mixed and cooled with the cooled brine water from the cold storage tank 5, and then sent again to the air conditioners 6 and 7 by the pump 15.

On the other hand, at the time of heating, the flow of the heat medium in the heat pump 1 is opposite to that at the time of cooling, and the high temperature heat medium from the compressor 1a is sent to the water heat exchanger 3. As a result, the pipe 19 receives heat, and hot brine water is sent to the air conditioners 6 and 7 to perform heating. The other basic operations are the same as during cooling, so description will be omitted. 6
e and 7e are air conditioner control panels.

A dew condensation sensor 38 is installed on the ceiling surface and detects dew condensation on the ceiling surface.

The above-described control of the operation of each device is performed by the CPU 9 as a control unit via the control line 10 based on the set value externally set by the control panel 8.

Reference numeral 28 is a room, 29 is a corridor, 30 is a ceiling, 31 is a floor, 32 is a room ventilation port, and 33 is a central ventilation port.

The operation of the air conditioners 6 and 7 is controlled by a control signal from the CPU 9. The operation will be described below. FIG. 2 is a flowchart showing an example of the operation of the air conditioners 6 and 7. When the switch for starting the operation of the air conditioners 6 and 7 is turned on, the fan 6a of the radiation type air conditioner 6 turns,
By opening the valve 6d, cold water or hot water flows. Then, the fan 7a of the blowout type air conditioner 7 turns,
When the valve 7d is opened, cold water or hot water flows. Here, when the indoor temperature reaches the set temperature, the valve 7d of the blow-out type air conditioner 7 is closed and the fan 7a is stopped. Therefore, by first operating both the air conditioners 6 and 7, the indoor temperature can be quickly set to the set temperature, a comfortable environment can be quickly obtained, and when the indoor temperature reaches the set temperature, the blowout type air conditioner is set. Since 7 stops, the time when the wind from the blowout type air conditioner 7 hits the human body can be shortened, the energy consumption can be reduced and the energy saving effect can be improved. You can maintain a comfortable environment by keeping it at the set temperature. In this way, both energy saving and comfort can be satisfied.

In the control of the air conditioners 6 and 7 described above, the valve 7d of the blowout type air conditioner 7 is operated when the room temperature reaches the set temperature after both the air conditioners 6 and 7 start operating.
However, as shown in the flowchart of FIG. 3, when the predetermined time (for example, 10 minutes) has elapsed from the time when both air conditioners 6 and 7 started operating, Even if the valve 7d of the air conditioner 7 is closed and the fan 7a is stopped, the same effect can be obtained. In addition, both of the air conditioners 6,
It is sufficient to set the time to such an extent that the indoor temperature becomes a predetermined temperature by the operation of 7.

Next, as shown in the flow chart of FIG. 4, when the dew condensation sensor 38 detects dew condensation on the ceiling surface after both the air conditioners 6 and 7 start operating, the radiation type air conditioner 6 If the valve 6d is closed and the fan 6a is stopped, the operation of the radiation type air conditioner 6 is stopped when the dew condensation occurs, so that the dew condensation can be suppressed.
At this time, since the blowout type air conditioner 7 is operating, the temperature can be kept warm and the comfort can be maintained. In addition,
In this case, the fan 6a may be operated and only blown.

Further, as shown in the flow chart of FIG. 5, after both air conditioners 6 and 7 start operating, the operation of the blowout air conditioner 7 is stopped and only the radiation type air conditioner 6 is operating. In this state, when the dew condensation sensor 38 detects dew condensation, the valve 6d of the radiation type air conditioner 6 is closed and the fan 6a is rotated. In this way, when dew condensation occurs, the valve 6d is closed to prevent cold water or hot water from flowing, and the air blown from the fan 6a is merely blown to mitigate the rapid temperature change caused by dew condensation, and to keep the temperature constant. By doing so, you can maintain comfort.

Further, as shown in the flow chart of FIG. 6, when the switch is turned off while the radiation type air conditioner 6 is operating, if only the valve 6d of the radiation type air conditioner 6 is closed, cold water is cooled. Since the hot water does not flow, the air blown out is blast. Here, if the fan 6a is rotated for a predetermined time (for example, 5 minutes) after the valve 6d is closed, and then the fan 6a is stopped, a rapid temperature change that easily causes dew condensation occurs due to the blown air. You can prevent it and keep comfort.

[0023]

As described above, according to the first to third aspects of the present invention, the heat pump, the water heat exchanger, and the air heat exchanger are connected by the first pipe, and flows in the pipe. In addition to performing heat exchange by a heat medium, a cool storage tank for storing cool heat for cooling and heating, an air conditioner for cooling and heating, and a water heat exchanger are connected by a second pipe, and the inside of the second pipe is connected. In an air conditioning system that performs cooling and heating with flowing water or antifreeze, and controls the operation of each device by the control unit, the air conditioning unit includes a radiation type air conditioner and a blowout type air conditioner, and in the control unit, first, Both the radiation type air conditioner and the blowout type air conditioner are operated, and after that, when the room temperature reaches a predetermined temperature or a predetermined time elapses, only the operation of the blowout type air conditioner is stopped. So radiation type Using both conditioning equipment and blowoff air conditioner, while ensuring comfort, air conditioning system capable of energy saving could be provided.

According to the invention of claim 4, in the invention of claims 1 to 3, the radiation type air conditioner and the blowout type air conditioner are installed on the ceiling of the room, and a dew condensation sensor is added to the ceiling surface. However, when the dew condensation sensor detects the occurrence of dew condensation, the operation of the radiant air conditioner is stopped or only the blowing of air is performed, so it is possible to suppress the occurrence of dew condensation while maintaining comfort. it can.

According to the invention of claim 5, in the invention of claims 1 to 3, the radiation type air conditioner and the blowing type air conditioner are installed on the ceiling of the room, and a dew condensation sensor is added to the ceiling surface. However, when only the radiant air conditioner is operating, when the dew condensation sensor detects the occurrence of dew condensation, the radiant air conditioner is operated to blow only air, so comfort is maintained. However, the occurrence of dew condensation can be suppressed.

According to the invention described in claim 6, in the invention described in claims 1 to 5, when the switch of the radiation type air conditioner is turned off while only the radiation type air conditioner is operating. In addition, since the air blowing operation is performed for a complete period of time and then turned off, it is possible to suppress the occurrence of dew condensation while maintaining comfort.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an air conditioning system showing an example of an embodiment of the present invention.

FIG. 2 is a flow chart showing an example of the operation of the above air conditioner.

FIG. 3 is a flowchart showing another example of the operation of the above air conditioner.

FIG. 4 is a flowchart showing another example of the operation of the above air conditioner.

FIG. 5 is a flowchart showing another example of the operation of the above air conditioner.

FIG. 6 is a flowchart showing another example of the operation of the above air conditioner.

[Explanation of symbols]

 1 Heat Pump 1a Compressor 1b Expansion Valve 1c Piping 1d Heat Pump Controller 1e Compressor Operating Frequency Controller 3 Water Heat Exchanger 4 Air Heat Exchanger 5 Cooling Heat Tank 6 Radiant Air Conditioner 6a Fan 6b Coil 6c Air Conditioner Controller 6d Open / close Valve 6e Air Conditioner Control panel 6f Inlet port 6g Blower port 7 Blow-out air conditioner 7a Fan 7b Coil 7c Air conditioner controller 7d Open / close valve 7e Air conditioner control panel 7f Inlet port 7g Blower port 8 Control panel 9 CPU 10 Control line 13 3-way valve 13a Valve controller 14 Cold Storage Tank Outlet Valve 14a Valve Controller 15 Air Conditioner Pump 15a FCU Pump Controller 16 Ventilation Fan 16a Ventilation Fan Controller 19 Piping 9a Air-conditioner-side forward pipe 19b Air-conditioner-side return pipe 20 Circulation pump 20a Circulation pump controller 21 Mixing tank 28 Room 29 Corridor 30 Ceiling 31 Underfloor 32 Room ventilation port 33 Central ventilation port 34 Indoor air (air conditioning air flow) 35 Indoor air ( Ventilation air flow) 36 Air heat exchange air flow 37 Ceiling air 38 Condensation sensor

Claims (6)

[Claims] 1. A heat pump, a water heat exchanger, and an air heat exchanger are connected by a first pipe, heat is exchanged by a heat medium flowing in the pipe, and the stored heat for cooling and heating is stored. A cool storage tank to be performed, an air conditioner for cooling and heating, and the water heat exchanger are connected by a second pipe, and cooling or heating is performed by water or an antifreezing liquid flowing in the second pipe, and the operation of each device is controlled by a control unit. In the air conditioning system to be controlled, as the air conditioner, a radiation type air conditioner and a blowing type air conditioner are provided, and in the control unit, first, both the radiation type air conditioner and the blowing type air conditioner are operated, and thereafter, An air conditioning system characterized in that only the operation of the blow-out type air conditioner is stopped. 2. First, both the radiation type air conditioner and the blowout type air conditioner are operated, and after the room temperature reaches a predetermined temperature, only the operation of the blowout type air conditioner is stopped. The air conditioning system according to claim 1. 3. The radiation type air conditioner and the blowout type air conditioner are first operated, and only the operation of the blowout type air conditioner is stopped when a predetermined time elapses. The air conditioning system according to 1. 4. The radiant air conditioner is installed on the ceiling of a room while the radiant air conditioner and the blowout air conditioner are installed, and when a dew condensation sensor detects the occurrence of dew condensation, the radiant air conditioner is installed. 4. The air conditioning system according to claim 1, wherein the operation of No. 1 is stopped or the operation of blowing only air is performed. 5. The radiant air conditioner and the blow-out type air conditioner are installed on the ceiling of the room, and a dew condensation sensor is added to the ceiling surface so that the dew condensation sensor causes dew condensation when only the radiant air conditioner is operating. The air-conditioning system according to claim 1, wherein the radiation type air conditioner is made to perform an operation of blowing only a blast when the occurrence of is detected. 6. When the radiant air conditioner is switched off while only the radiant air conditioner is operating,
The air conditioning system according to any one of claims 1 to 5, wherein the air blowing operation is turned off after one revolution time.