JPH0752490Y2 - Cold / hot water supply device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cold / hot water supply device equipped with an air conditioner external conditioner.

[0002]

2. Description of the Related Art Conventionally, as an outside air processing unit provided with an air conditioner for outside air conditioning, for example, one shown in FIG. 2 is known.

In FIG. 2, reference numeral 1 is an air conditioner external air conditioner. The air conditioner external air conditioner 1 is provided with an external air inlet 2, and inside the air conditioner coil 3 and the fan 4 are provided.
Is provided. A duct 6 is attached to the air outlet 5 of the fan 4 so that cold air or warm air can be sent.

The cooling and heating coil 3 has pipes 7,
8 is attached. A cold / hot water source (not shown) communicates with the pipes 7 and 8. Further, the pipe 8 is provided with a valve 9.

Further, the pipes 7 and 8 have separate pipes 10 and
11 branches and communicates with the heat exchanger 13. A valve 12 is provided in the pipe 11. The heat exchanger 13 is connected to the cooling and heating coils 19 of the plurality of air conditioning indoor units 18 via the pipes 14 and 15.

Each air conditioning indoor unit 18 is provided with an inlet 20 for indoor air, and a cooling and heating coil 19 and a fan 21 are provided inside. A duct 23 is attached to the air outlet 22 of the fan 21 so that cold air or warm air can be sent.

Each cooling / heating coil 19 and the pipe 15 are connected to each other via a valve 24. A valve 16 and a pump 17 are provided in parallel in the pipe 15. Further, a refrigerant is filled in the circulation system formed by the heat exchanger 13, the pipe 14, the cooling and heating coils 19, and the pipe 15.

Next, according to the conventional cold / hot water supply apparatus thus constructed, in the heating operation, the hot water sent from the cold / hot water source heats the cooling / heating coil 3 and the heat via the pipe 7. It is supplied to the exchanger 13.

In the air conditioner external conditioner 1,
The outside air flowing in from the outside air introduction port 2 is supplied to the cooling / heating coil 3, heated by the cooling / heating coil 3, and then discharged to the duct 6 by the fan 4 through the outlet 5.

On the other hand, in each air conditioning indoor unit 18, the refrigerant is gasified in the heat exchanger 13 by the hot water sent through the pipe 7 and flows into the cooling and heating coil 19 through the pipe 14.

In each of the air conditioning indoor units 18, indoor air flows in through the inlet port 20 and is warmed by the cooling / heating coil 19 and then blown out by the fan 21.
It is discharged to the duct 23 via.

During this heating operation, the valve 16 of the pipe 15 is open and the pump 17 is stopped. In the case of the cooling operation, the cold water sent from the cold / hot water source is supplied to the cooling / heating coil 3 and the heat exchanger 13 via the pipe 7.

In the air conditioner external conditioner 1,
The outside air that has flowed in from the outside air inlet 2 is supplied to the cooling / heating coil 3, cooled by the cooling / heating coil 3, and then discharged to the duct 6 by the fan 4 through the outlet 5.

On the other hand, in each air conditioning indoor unit 18, the refrigerant is liquefied in the heat exchanger 13 by the cold water sent through the pipe 7, and the liquefied refrigerant is cooled and heated by the pump 17 through the pipe 15. It flows into the coil 19.

In each air conditioning indoor unit 18, indoor air flows in through the inlet 20 and is cooled by the cooling / heating coil 19 and then blown out by the fan 21.
It is discharged to the duct 23 via.

During the heating operation, the valve 16 of the pipe 15 is closed. Further, the valves 9 and 12 can be appropriately switched according to set conditions.

[0017]

However, in such a conventional cold and hot water supply device, the air conditioner external conditioner 1 and the heat exchanger 13 are provided.
Since and are arranged in parallel via the pipes 7 and 8, the transport power from the cold / hot water source becomes large. Further, there is a problem that the diameters of the pipes 7 and 8 become large when trying to reduce the transport power.

The present invention was made in order to solve such a conventional problem, and an object thereof is to use an air conditioner which requires relatively low temperature (about 10 ° C.) of cold water during cooling operation. By arranging the air conditioner and an indoor unit for air conditioning that requires cold water of medium temperature (about 15 ° C) in series in the cooling water pipe, the difference between the input / output cold / hot water temperature from the cold / hot water source is made large and the amount of cold / hot water is increased. It is possible to reduce the amount of cold / hot water and reduce the transport power by increasing the temperature difference during heating operation as well as reducing the transport power.
An object of the present invention is to provide a cold / hot water supply device capable of reducing the pipe diameter.

[0019]

SUMMARY OF THE INVENTION The present invention provides an air conditioner external conditioner having an outside air introduction port, a cooling and heating coil and a fan disposed therein, and a duct installed at the outlet port of the fan, and an air conditioner external conditioner. The hot and cold water introducing pipe that connects the primary side of the cooling and heating coil of the air conditioner and the hot and cold water source, the first hot and cold water derivation pipe that connects to the secondary side of the air conditioning heating and cooling coil of the air conditioner external air conditioner, and this cold temperature A heat exchanger communicating via the water outlet first pipe, a hot / cold water outlet pipe connecting the heat exchanger to a hot / cold water source, and an inside air inlet provided with a heating / cooling coil and a fan. An air conditioning indoor unit having a duct attached to the outlet of a fan, a first pipe that connects the heating and cooling coils of the air conditioning indoor unit to the heat exchanger, and is filled with a refrigerant therein, and the air conditioning. Heat exchange with the indoor heating / cooling coil The refrigerant therein to dispose the pump and valve in parallel with contact the door which is constituted by a second pipe being filled.

[0020]

In the present invention, during the heating operation, the hot water supplied from the cold / hot water source is sent to the primary side of the cooling / heating coil of the air conditioner external conditioning unit through the cold / hot water introducing pipe and flows in from the outside air introducing port. After exchanging heat with the heated outside air to warm it, the heated outside air is discharged to the duct by the fan. Then
The hot water discharged from the secondary side of the cooling / heating coil is supplied to the heat exchanger through the cold / hot water outlet first pipe, and the gasified refrigerant passes through the first pipe to the cooling / heating coil in the indoor unit for air conditioning. To heat the room air introduced from the inside air introduction port to heat it, the warmed room air is discharged to the duct by the fan, and the liquefied refrigerant flows down the second pipe and returns to the heat exchanger again. . Then, the hot water discharged from the secondary side of the heat exchanger returns to the cold / hot water source through the cold / hot water outlet second pipe. Heating operation is maintained by repeating this cycle.

On the other hand, during the cooling operation, the cold water supplied from the cold / hot water source is sent to the primary side of the cooling / heating coil of the air conditioner air conditioner through the cold / hot water introducing pipe, and the outside air flowing from the outside air introducing port is supplied. After cooling by exchanging heat, the cooled outside air is discharged to the duct by the fan. Next, the cold water discharged from the secondary side of the heating / cooling coil is supplied to the heat exchanger via the hot / cold water outlet first pipe, the refrigerant is liquefied, and the inside of the air conditioning indoor unit is pumped through the second pipe. Sent to the cooling / heating coil of the room and exchanges heat with the room air introduced from the inside air inlet to cool the room air.The cooled room air is discharged to the duct by the fan, and the gasified refrigerant flows down the first pipe to heat it. Return to the exchange again. Then, the cold water discharged from the secondary side of the heat exchanger returns to the cold / hot water source via the cold / hot water outlet second pipe. By repeating this cycle, the cooling operation is maintained.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a cold / hot water supply device according to the present invention.

In the figure, 30 is an air conditioner external air conditioner. The air conditioner outside air conditioner 30 is provided with an outside air introduction port 31, inside which a cooling and heating coil 32 and a fan 33 are arranged. In addition, the outlet 34 of the fan 33
A duct 35 is attached to the air conditioner so that cold air or warm air can be sent.

The primary side of the cooling / heating coil 32 of the air conditioner external conditioner 30 and a cold / hot water source (not shown) are connected by a cold / hot water introducing pipe 36. Further, a cold / hot water derivation first pipe 37 is attached to the secondary side of the cooling / heating coil 32 of the air conditioning external air conditioner 30.

A heat exchanger 3 is connected to the hot / cold water outlet pipe 37.
8 is attached. The heat exchanger 38 is provided with a cold / hot water outlet second pipe 39 which communicates with a cold / hot water source (not shown).

A first pipe 40 and a second pipe 41 are attached to the heat exchanger 38. A valve 42 and a pump 43 are provided in parallel in the second pipe 41.

The first pipe 40 and the second pipe 41 communicate with the cooling and heating coil 46 in the air conditioning indoor unit 44.
This air conditioning indoor unit 44 is provided with an inside air introduction port 45, and has a cooling and heating coil 46 and a fan 47 inside.
Is arranged. In addition, the outlet 48 of the fan 47
A duct 49 is attached to the air conditioner so that cold air or warm air can be sent.

The first pipe 40 and the cooling / heating coil 4
The refrigerant is filled in the refrigerant circulation system composed of 6, the second pipe 41, and the heat exchanger 38. As this refrigerant,
For example, a CFC-based gas (for example, R-22 or the like) is used.

A valve 50 is mounted between the cooling / heating coil 46 of each air conditioning indoor unit 44 and the second pipe 41. Further, a three-way switching valve 51 is provided between the cold / hot water introducing pipe 36 and the cold / hot water outlet first pipe 37.

Further, a bypass passage 53 provided with a valve 54 is attached between the cold / hot water outlet first pipe 37 and the cold / hot water outlet second pipe 39. Further, a valve 52 is provided in the first hot and cold water outlet pipe 37 on the heat exchanger 38 side from the branch point of the bypass 53.

Next, the operation of this embodiment thus constructed will be described. First, during the heating operation, as shown in FIG. 1, hot water supplied from the cold / hot water source flows into the primary side of the cooling / heating coil 32 in the air conditioning external conditioner 30 via the cold / hot water introducing pipe 36.

Then, in the air conditioning external air conditioner 30, the fan 33 is driven to clean the outside air flowing from the outside air inlet 31 with a filter (not shown), and then the cooling / heating coil 3 is used.
Can be sent to 2.

Therefore, the cleaned outside air is heated by passing through the cooling / heating coil 32 to be heat-exchanged. The warmed outside air is discharged to the duct 35 from the blow-out port 34 by the fan 33 after a proper humidity is added by a humidifier (not shown).

The hot water discharged from the secondary side of the heating / cooling coil 32 in the air conditioning external air conditioner 30 is supplied to the heat exchanger 38 via the cold / hot water outlet first pipe 37. In this heat exchanger 38, the refrigerant is gasified, and the first pipe 4
The air flows into the cooling / heating coil 46 in the air conditioning indoor unit 44 through the inside of 0.

In the air conditioning indoor unit 44, the indoor air flowing in from the inside air inlet 45 can be cleaned by a filter (not shown) and then sent to the cooling / heating coil 46. Therefore, the cleaned outside air is heat-exchanged and warmed by passing through the cooling / heating coil 46.

The warmed outside air, after having a proper amount of moisture added thereto by a humidifier (not shown), is discharged from the outlet 48 to the duct 49 by the fan 47. on the other hand,
The refrigerant that has exchanged heat with the room air in the cooling / heating coil 46 is liquefied and flows down in the second pipe 41 to flow into the heat exchanger 38.
Return to again.

The heating operation is maintained by repeating this cycle. During this heating operation, the valve 42 of the second pipe 41 is open and the pump 43 is stopped.

A valve 50 provided between the cooling / heating coil 46 of each air conditioning indoor unit 44 and the second pipe 41,
The valve 52 provided in the cold / hot water outlet first pipe 37 is opened / closed according to the load.

Further, between the cold / hot water introducing pipe 36 and the cold / hot water derivation first pipe 37, the three-way switching valve 51 is provided so that hot water can be supplied to the cooling / heating coil 32 in the heating operation. , Open.

Furthermore, the bypass passage 53 installed between the cold / hot water outlet first pipe 37 and the cold / hot water outlet second pipe 39.
The valve 5 depending on the load of each air conditioning indoor unit 44.
2. The valve 54 is operated in inverse proportion. Of course, when the air conditioning indoor unit 44 is not operated, the valve 52 is closed.

On the other hand, during the cooling operation, as shown in FIG.
The cold water supplied from the cold / hot water source flows into the primary side of the cooling / heating coil 32 in the air conditioning external conditioner 30 via the cold / hot water introducing pipe 36.

In the air conditioner external air conditioner 30, the fan 33 is driven to clean the outside air flowing from the outside air inlet 31 with a filter (not shown), and then the cooling / heating coil 3 is used.
Can be sent to 2.

Therefore, the cleaned outside air is heat-exchanged and cooled by passing through the cooling / heating coil 32. The cooled outside air is discharged from the outlet 34 to the duct 35 by the fan 33.

The cold water discharged from the secondary side of the heating / cooling coil 32 in the air conditioning external air conditioner 30 is supplied to the heat exchanger 38 via the cold / hot water outlet first pipe 37. In the heat exchanger 38, the refrigerant is liquefied and flows into the cooling / heating coil 46 in the air conditioning indoor unit 44 via the inside of the second pipe 41 by the pump 43.

In the air conditioning indoor unit 44, the indoor air flowing in from the inside air inlet 45 can be cleaned by a filter (not shown) and then sent to the cooling / heating coil 46. Therefore, the cleaned outside air is cooled by heat exchange by passing through the cooling / heating coil 46.

The cooled outside air is discharged from the outlet 48 to the duct 49 by the fan 47. on the other hand,
The refrigerant that has exchanged heat with the indoor air in the cooling / heating coil 46 is gasified and flows down through the first pipe 40 to flow through the heat exchanger 3
Return to 8 again.

By repeating this cycle, the cooling operation is maintained. During this heating operation, the valve 42 of the second pipe 41 is open and the pump 43 is stopped.

A valve 50 provided between the cooling / heating coil 46 of each air conditioning indoor unit 44 and the second pipe 41,
The valve 52 provided in the cold / hot water derivation first pipe 37 is open.

Further, a three-way switching valve 51 is provided between the cold / hot water introducing pipe 36 and the cold / hot water derivation first pipe 37 so that cold water can be supplied to the cooling / heating coil 32 under the condition of performing the cooling operation. , Open.

Furthermore, a bypass passage 53 installed between the cold / hot water outlet first pipe 37 and the cold / hot water outlet second pipe 39.
Is the duct 49 when the indoor units 44 for air conditioning are in operation.
The valves 52 and 54 are operated so as to operate in inverse proportion to the load on the room from which air is blown out. Of course, when the air conditioning indoor unit 44 is not operated, the valve 52 is closed.

As described above, according to the present embodiment, all the cold / hot water supplied from the cold / hot water source is sent to the cooling / heating coil 32 in the air conditioner external conditioning unit 30, and after having exchanged heat with the outside air. , Is sent to the heat exchanger 38, where the refrigerant is gasified or liquefied and then returned to the cold / hot water source. Therefore, the cold / hot water is conditioned by the air conditioner as in the conventional method shown in FIG. Since it is not necessary to separately send to the heating / cooling coil 3 and the heat exchanger 13 in 1, it is possible to reduce the transport power of the cold / hot water and to reduce the diameter of the cold / hot water introducing pipe 36. Becomes

Further, since the cooling / heating coil 46 of each air conditioning indoor unit 44 is heat-exchanged by the refrigerant, even the hot water once consumed in the cooling / heating coil 32 in the air conditioning external conditioner 30 is sufficiently cooled and heated. It becomes possible to do.

Therefore, the size of the cold / hot water source can be reduced.

[0054]

As described above, according to the present invention,
The cold / hot water supplied from the cold / hot water source is first sent to the heating / cooling coil in the air conditioner external air conditioner, where it exchanges heat with the outside air and then sent to the heat exchanger where the refrigerant is gasified or liquefied. Then, since the route of returning to the hot and cold water source is moved afterwards, there is no need to separately send the cold and hot water to the cooling and heating coil and the heat exchanger in the air conditioner external conditioner as in the conventional method. It is possible to reduce the transport power, and it is also possible to reduce the diameter of the cold / hot water introducing pipe.

Further, since the cooling and heating coils of each air conditioning indoor unit are heat-exchanged by the refrigerant, it is possible to sufficiently cool and heat even the hot water once consumed in the cooling and heating coils in the air conditioning external conditioner. Become.

Therefore, the scale of the cold / hot water source can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view of a configuration of an outside air processing unit according to the present invention.

FIG. 2 is a configuration explanatory view of a conventional outside air processing unit.

[Explanation of symbols]

 30 Air Conditioning External Air Conditioner 31 Outside Air Inlet 32 Air Conditioning Coil 33 Fan 34 Air Outlet 35 Duct 36 Cold / Hot Water Introducing Pipe 37 Cold / Hot Water Deriving First Pipe 38 Heat Exchanger 39 Cold / Hot Water Deriving Second Pipe 40 First Pipe 41 Second piping 42 Valve 43 Pump 44 Air conditioning indoor unit 45 Inside air inlet 46 Air conditioning coil 47 Fan 48 Air outlet 49 Duct

Claims (1)

[Scope of utility model registration request] 1. An air conditioner external conditioner having an outside air introduction port, an air conditioning coil and a fan disposed inside, and a duct attached to the outlet of the fan, and a primary air conditioner coil for the air conditioner external conditioner. And hot / cold water introducing pipe that connects the side and the hot / cold water source, cold / hot water derivation first pipe that communicates with the secondary side of the coil for heating / cooling of the air conditioning external conditioner, and via the cold / hot water derivation first pipe A heat exchanger to communicate with, a second pipe for drawing hot and cold water that connects this heat exchanger with a source of cold and hot water, an inside air inlet, and a cooling and heating coil and fan are installed inside, and a duct is attached to the outlet of the fan. An air-conditioning indoor unit, a first pipe that connects the air-conditioning coil of the air-conditioning indoor unit and the heat exchanger and is filled with a refrigerant therein, and a cooling-heating coil of the air-conditioning indoor unit Communicating with the heat exchanger Pump and hot and cold water supply system in which the refrigerant therein to dispose the valve in parallel is characterized by being configured in the second pipe being filled.