JPS5848824B2 - Air conditioning/heating water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air-conditioning/heating water supply system, and particularly to an air-conditioning/heating system that allows an efficient hot water supply system to be added easily and inexpensively, and that can supply high-temperature hot water that cannot be obtained with a conventional heat pump unit. This is what I did to get it.

An example of this invention will be described below with reference to FIG.

In the figure, reference numeral 1 denotes a first compressor that constitutes a heating and cooling cycle, and an air conditioning heat exchanger 3 is connected to the discharge side of the compressor 1 via a first control valve 2, and a fan is connected to the suction side of the compressor 1. 4, and these heat exchangers 3, 5 are connected to opposite input/output points of one of the rectifier valve devices 6, and the other opposite input/output points of the rectifier valve device 6 are connected. A series pipeline of a throttle device 7 and a first check valve 8 is connected between the input and output points facing each other, and is further connected to the discharge side and suction side of the first compressor 1, respectively.

A four-way valve 9 is inserted into the conduit of each heat exchanger 3, 5, and by switching the four-way valve 9, the heating and cooling cycle is operated for cooling and heating.

10 is an air conditioning pipe connected to the air conditioning heat exchanger 3;
The air conditioning pipe 10 is provided with an air conditioning load 11 .

Further, 13 is a second compressor connected to the discharge side of the first compressor 1 via a second control valve 14.
A hot water supply heat exchanger 15 and a second throttle device 1 are connected between the discharge side of the flowchart and the connection point of the first check valve 8 connected to the rectifier valve device 6.
6 and a second check valve 17 are connected in series, and a first throttle device 18 is connected in parallel between the suction side of the second compressor 13 and the discharge side of the hot water supply heat exchanger 15. .

19 is a hot water supply tank, and the hot water supply tank 19 and the hot water supply heat exchanger 15 are connected by a hot water supply pipe 20;
The hot water in the tank 19 is circulated through the heat exchanger 15 by a hot water supply pump 21 inserted in the hot water supply pipe 20.

22 is a water tank connected to the pipe 20, and 23
is a hot water faucet installed in the hot water tank 19.

Next, the operation of this inventive device configured as shown in L will be explained.

First, when the device according to the present invention is operated for cooling, the second control valve 14 is closed and the second compressor 1 is turned on as shown in FIG.
3 and the hot water supply pump 21 are stopped, and the first control valve 2 is opened instead, and the first compressor 1 and the air conditioning pump 1 are stopped.
Start 2.

In this way, the refrigerant flows as shown by the arrow in the cooling operation cycle circuit of the first compressor 1, heat exchangers 3 and 5, rectifier valve device 6, and four-way valve 9, and the heat exchanger 3 functions as a cooler. This acts to cool the air conditioning load 11.

In addition, during heating operation, the four-way valve 9 in FIG. 1 is switched as shown in FIG.
If it is set as shown by the arrow in the figure, the heat exchanger 3 acts as a condenser and enters a heating operation to heat the air conditioning load 11.

Figure 3 shows the hot water supply operation cycle; in this case,
With the first control valve 2 closed, the second control valve 14 opened, the hot water supply pump 21 driven, and the air conditioning pump 12 stopped, the first and second compressors 1 and 13 are started. Then, the high-temperature refrigerant compressed in two stages by both compressors 1 and 13 is heat exchanged with the hot water supply water circulated by the pump 21 in the hot water heat exchanger 15, and after being condensed, part of the condensed refrigerant is The condensed refrigerant is bypassed through the first throttle device 18 to the suction side of the second compressor 13, and the other condensed refrigerant passes through the second throttle device 16, the check valve 17, the rectifier valve device 6 and the heat exchanger 51. After that, it flows into the suction side of the first compressor 1 and circulates along the path shown by the arrow in FIG. 3, resulting in hot water supply operation.

FIG. 4 shows a case where the apparatus of the present invention is operated for cooling and hot water supply. During the operation, the first and second control valves 2 and 14 are opened, and each pump 12.21 is turned off. drive

If the first and second compressors 1 and 13 are started in this state,
The high-temperature refrigerant compressed in two stages by both compressors 1 and 13 is heat exchanged with hot water supply water in the hot water supply heat exchanger 3, and condensed.
It is circulated in the same way as in the case shown in the figure.

On the other hand, a part of the high-temperature refrigerant discharged from the first compressor 1 passes through the first control valve 2 and the four-way valve 9 as shown by the arrow in FIG. , rectifier valve device 6
, flows into the air-conditioning heat exchanger 3 via the expansion device 7 and the first check valve 8, and is cooled by exchanging heat with the air-conditioning heat medium circulating in the air-conditioning pipes by the pump 12.

The air then flows through the four-way valve 9 again into the suction side of the first compressor 1 to perform the cooling operation cycle.

In addition, during heating and hot water supply operation, the four-way valve shown in FIG. 4 is switched to the flow state shown in FIG. 5, and other settings are made in the same manner as in the case of FIG. 4.

The hot water supply operation cycle in this state is carried out in exactly the same manner as in the case of FIG. 3, so its explanation will be omitted.

On the other hand, by switching the four-way valve 9, a part of the high-temperature refrigerant discharged from the first compressor 1 flows into the air conditioning heat exchanger 3 through the four-way valve 9 as shown by the arrow in FIG. The heat exchanger 3 heats the heat medium by exchanging heat with the heat medium circulating in the air conditioning pipes by the pump 12.

After heat exchange with the heat medium, the refrigerant passes through a rectifier valve device 6, a throttle device 7, and a check valve 8, and then passes through an air side heat exchanger 5 and a four-way valve 9 to the first compressor 1. returned to
It performs a heating operation cycle.

As described above, according to the device of the present invention, it is possible to perform air conditioning and heating, and at the same time, it is possible to obtain hot water at a high temperature that cannot be obtained with conventional heat pump units. There are advantages that can be added to

[Brief explanation of drawings]

The drawings show an example of the device of the present invention, and FIG. 1 is a cooling operation cycle diagram, FIG. 2 is a heating operation cycle diagram, FIG. 3 is a hot water supply operation cycle diagram, FIG. 4 is a cooling hot water supply operation cycle diagram, and FIG. Figure 5 is a heating and hot water supply operation cycle diagram. Explanation of main symbols 1: First compressor, 2: First control valve,
3: Air conditioning heat exchanger, 5: Air side heat exchanger, 6: Rectifier valve device, 7: Throttle device, 8: First check valve, 11: Air conditioning load, 12: Air conditioning pump, 13: Second compressor, 14: second control valve, 15: heat exchanger for hot water supply, 16: second throttle device, 17: second check valve, 18: first check valve, 19: tank for hot water supply, 21: Pump for hot water supply.

Claims (1)

[Claims] 1 A first compressor, a first control valve, an air conditioning heat exchanger, a rectifier valve device with a throttle device added, and an air side heat exchanger are connected in a closed loop, and the first compression of both the heat exchangers is In a heating and cooling cycle in which a four-way valve is inserted on the side connected to the heating and cooling machine, a second compressor constituting a hot water supply cycle is connected to the discharge side of the first compressor in this heating and cooling cycle via a second control valve, A hot water supply heat exchanger, a second throttle device, and a second check valve are connected in series between the discharge side of the second compressor and the rectifying valve device in the cooling/heating cycle, and the suction side of the second compressor is connected in series. An air-conditioning/heating/water supply device comprising a first throttle device connected in parallel between the side and the discharge side of the hot water supply heat exchanger.