Water source heat pump type waste heat recovery hot water air conditioning unit

Abstract

The utility model discloses a water source heat pump type waste heat recovery hot water air conditioning unit which comprises a first compressor, a four-way reversing valve, an air conditioning heat exchanger, a shell-and-tube type water source heat exchanger, a first gas-liquid separator, a second compressor, a hot water heat exchanger and a second gas-liquid separator. An exhaust pipe of the first compressor is connected with a first valve port of the four-way reversing valve, a second valve port of the four-way reversing valve is sequentially connected with the air conditioner heat exchanger, the first filter, the first expansion valve, the third filter and a first port of the shell-and-tube water source heat exchanger, and a second port of the shell-and-tube water source heat exchanger is connected with a fourth valve port of the four-way reversing valve. And a third valve port of the four-way reversing valve is sequentially connected with a first gas-liquid separator and a first compressor. An exhaust pipe of the second compressor is sequentially connected with a hot water heat exchanger, a second filter, a second expansion valve and a third port of a shell-and-tube water source heat exchanger, and a fourth port of the shell-and-tube water source heat exchanger is sequentially connected with a second gas-liquid separator and an air suction pipe of the second compressor.

Description

Technical Field

[0001] The utility model belongs to the technical field of air-conditioning units, and relates to a water source heat pump type waste heat recovery hot water air-conditioning unit. Background Art

[0002] Existing groundwater air conditioning units only provide cooling or heating functions and lack hot water supply. Operation requires extensive manual maintenance and requires multiple valve adjustments to switch between cooling and heating, resulting in significant annual maintenance and operating costs. Furthermore, existing air conditioning units suffer from high energy consumption and rapid wear and tear. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the present utility model is to provide a water source heat pump type waste heat recovery hot water air conditioning unit.

[0004] The utility model provides a water source heat pump type waste heat recovery hot water air conditioning unit, comprising: a first compressor, a four-way reversing valve, an air conditioning heat exchanger, a first filter, a first expansion valve, a third filter, a shell and tube water source heat exchanger, a first gas-liquid separator, a second compressor, a hot water heat exchanger, a second filter, a second expansion valve and a second gas-liquid separator; the exhaust pipe of the first compressor is connected to the first valve port of the four-way reversing valve, the second valve port of the four-way reversing valve is connected to the first port of the air conditioning heat exchanger, and the second port of the air conditioning heat exchanger is connected to the shell and tube through the first filter, the first expansion valve and the third filter in sequence. The first port of the shell and tube water source heat exchanger is connected to the fourth valve port of the four-way reversing valve, the third valve port of the four-way reversing valve is connected to the inlet of the first gas-liquid separator, and the outlet of the first gas-liquid separator is connected to the suction pipe of the first compressor; the exhaust pipe of the second compressor is connected to the first port of the hot water heat exchanger, the second port of the hot water heat exchanger is connected to the third port of the shell and tube water source heat exchanger through the second filter and the second expansion valve in sequence, the fourth port of the shell and tube water source heat exchanger is connected to the inlet of the second gas-liquid separator, and the outlet of the second gas-liquid separator is connected to the suction pipe of the second compressor.

[0005] Furthermore, a first sight glass is provided on the pipeline connecting the second port of the air-conditioning heat exchanger and the first port of the shell and tube water source heat exchanger, and a second sight glass is provided on the pipeline connecting the second port of the hot water heat exchanger and the third port of the shell and tube water source heat exchanger.

[0006] Furthermore, pressure switches and temperature sensors are provided on the intake pipe and exhaust pipe of the first compressor and the second compressor.

[0007] Furthermore, the shell and tube water source heat exchanger, air conditioning heat exchanger, and hot water heat exchanger are all provided with water inlet pipes and water outlet pipes; the water inlet pipe of the shell and tube water source heat exchanger is connected to the underground water pumping well, and the water outlet pipe is connected to the underground recharge well; the water inlet pipe and water outlet pipe of the air conditioning heat exchanger are connected to the user's terminal air conditioning equipment; the water inlet pipe and water outlet pipe of the hot water heat exchanger are connected to the hot water storage tank.

[0008] Furthermore, each water outlet pipe is provided with a water flow switch and a temperature sensor; each water inlet pipe is provided with a temperature sensor; the water flow switch, pressure switch and temperature sensor are all connected to the controller.

[0009] This utility model discloses a water-source heat pump-type waste heat recovery hot water air conditioning unit that can provide independent cooling or heating, as well as independent hot water supply. It can also provide cooling or heating and hot water supply simultaneously. The unit utilizes automatic control, extracting geothermal energy to achieve both cooling and heating functions. The unit utilizes heat pump technology to collect energy from the soil, converting it into energy to supply the air conditioning system with cooling, heating, and domestic hot water. Heat during cooling is recovered to provide domestic hot water. During operation, the unit extracts energy from the groundwater, and the groundwater temperature is unaffected by other factors, resulting in efficient, energy-saving, environmentally friendly, and safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic structural diagram of a water source heat pump type waste heat recovery hot water air conditioning unit of the utility model;

[0011] 1-First compressor, 2-Four-way reversing valve, 3-Air conditioning heat exchanger, 4-First filter, 5-First expansion valve, 6-Third filter, 7-Shell and tube water source heat exchanger, 8-First gas-liquid separator, 9-Second compressor, 10-Hot water heat exchanger, 11-Second filter, 12 Second expansion valve, 13-Second gas-liquid separator; 14-First sight glass, 15-Second sight glass, 16-Pressure switch, 17-Temperature sensor, 18-Water flow switch, 19-Underground water pumping well, 20-Underground recharge well. DETAILED DESCRIPTION

[0012] like Figure 1 As shown, the utility model is a water source heat pump type waste heat recovery hot water air conditioning unit, including: a first compressor 1, a four-way reversing valve 2, an air conditioning heat exchanger 3, a first filter 4, a first expansion valve 5, a third filter 6, a shell and tube water source heat exchanger 7, a first gas-liquid separator 8, a second compressor 9, a hot water heat exchanger 10, a second filter 11, a second expansion valve 12 and a second gas-liquid separator 13.

[0013] The exhaust pipe of the first compressor 1 is connected to the first valve port of the four-way reversing valve 2, the second valve port of the four-way reversing valve 2 is connected to the first port of the air-conditioning heat exchanger 3, the second port of the air-conditioning heat exchanger 3 is connected to the first port of the shell and tube water source heat exchanger 7 through the first filter 4, the first expansion valve 5, and the third filter 6 in sequence, the second port of the shell and tube water source heat exchanger 7 is connected to the fourth valve port of the four-way reversing valve 2, the third valve port of the four-way reversing valve 2 is connected to the inlet of the first gas-liquid separator 8, and the outlet of the first gas-liquid separator 8 is connected to the suction pipe of the first compressor 1.

[0014] The exhaust pipe of the second compressor 9 is connected to the first port of the hot water heat exchanger 10, the second port of the hot water heat exchanger 10 is connected to the third port of the shell and tube water source heat exchanger 7 through the second filter 11 and the second expansion valve 12 in sequence, the fourth port of the shell and tube water source heat exchanger 7 is connected to the inlet of the second gas-liquid separator 13, and the outlet of the second gas-liquid separator 13 is connected to the intake pipe of the second compressor 9.

[0015] A first sight glass 14 is provided on the pipeline connecting the second port of the air-conditioning heat exchanger 3 and the first port of the shell and tube water source heat exchanger 7, and a second sight glass 15 is provided on the pipeline connecting the second port of the hot water heat exchanger 10 and the third port of the shell and tube water source heat exchanger 7.

[0016] A pressure switch 16 and a temperature sensor 17 are provided on the intake pipe and the exhaust pipe of the first compressor 1 and the second compressor 2 .

[0017] The shell-and-tube water source heat exchanger 7, air conditioning heat exchanger 3, and hot water heat exchanger 10 are all equipped with water inlet and outlet pipes. The inlet pipe of the shell-and-tube water source heat exchanger 7 is connected to an underground water extraction well 19, and the outlet pipe is connected to an underground recharge well 20. The inlet and outlet pipes of the air conditioning heat exchanger 3 are connected to the user's end air conditioning equipment. The inlet and outlet pipes of the hot water heat exchanger 10 are connected to the hot water storage tank.

[0018] Each water outlet pipe is provided with a water flow switch 18 and a temperature sensor 17. Each water inlet pipe is provided with a temperature sensor 17. The water flow switch 18, the pressure switch 16 and the temperature sensor 17 are all connected to the controller.

[0019] The utility model discloses a water source heat pump type waste heat recovery hot water air conditioning unit with three functions of heating and hot water supply.

[0020] During cooling operation, the high-temperature, high-pressure refrigerant gas discharged from the first compressor 1 enters the first port of the four-way reversing valve 4, then enters the shell-and-tube water source heat exchanger 7 from the fourth port of the four-way reversing valve 3. It condenses and releases heat in the shell-and-tube water source heat exchanger 7. After the refrigerant's temperature is exchanged with the groundwater in the shell-and-tube water source heat exchanger 7, it flows out of the outlet pipe and returns to the underground recharge well 20. After flowing out of the first port of the shell-and-tube water source heat exchanger 7, the refrigerant passes through the third filter 6, the first expansion valve 5, and the first filter 4 to form a high-pressure, medium-temperature refrigerant liquid. The refrigerant liquid enters the air conditioning heat exchanger 3, absorbs heat, and evaporates. The generated cooling energy is exchanged with the air conditioning heat exchange circulating water, then flows out of the outlet pipe for air conditioning cooling. The evaporated low-pressure, medium-temperature gaseous refrigerant enters the second port of the electromagnetic four-way valve 2, then flows out of the third port of the electromagnetic four-way valve 2 into the first gas-liquid separator 8, and finally returns to the first compressor 1.

[0021] During heating operation, the high-temperature, high-pressure refrigerant gas discharged from the first compressor 1 enters the first port of the four-way reversing valve 4, then enters the air conditioning heat exchanger 3 through the second port of the four-way reversing valve 3. There, it condenses and releases heat. The refrigerant's temperature is then exchanged with the circulating water in the air conditioning heat exchanger 3 before being supplied to the air conditioner. The refrigerant flows out of the second port of the air conditioning heat exchanger 3, passes through the first filter 4, the first expansion valve 5, and the third filter 6, and becomes a high-pressure, medium-temperature refrigerant liquid. The high-pressure, medium-temperature refrigerant liquid then enters the shell-and-tube water source heat exchanger 7, where it absorbs heat and evaporates. The generated cooling energy is then exchanged with groundwater via the water source, and then flows back to the underground recharge well 20 through the outlet pipe. The evaporated, low-pressure, medium-temperature gaseous refrigerant enters the fourth port of the electromagnetic four-way valve 2, then flows out of the third port of the electromagnetic four-way valve 2, enters the first gas-liquid separator 8, and ultimately returns to the first compressor 1.

[0022] When hot water is supplied: the high-temperature and high-pressure refrigerant gas discharged from the second compressor 9 enters the hot water heat exchanger 10 for condensation. After the temperature of the refrigerant is heated by the circulating water in the hot water heat exchanger, it flows out from the outlet pipe to supply hot water for use. After flowing out of the second port of the hot water heat exchanger 10, the refrigerant passes through the second filter 11 and the second expansion valve 12 for throttling and pressure reduction to form a high-pressure medium-temperature refrigerant liquid. The medium-temperature refrigerant liquid absorbs heat and evaporates in the shell and tube water source heat exchanger 7. The generated cold energy is exchanged with groundwater and then flows out from the outlet pipe. The evaporated low-pressure medium-temperature gaseous refrigerant enters the second gas-liquid separator 13 and finally returns to the second compressor 9.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the concept of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water source heat pump type waste heat recovery hot water air conditioning unit, characterized in that: include: A first compressor, a four-way reversing valve, an air conditioning heat exchanger, a first filter, a first expansion valve, a third filter, a shell and tube water source heat exchanger, a first gas-liquid separator, a second compressor, a hot water heat exchanger, a second filter, a second expansion valve, and a second gas-liquid separator; The exhaust pipe of the first compressor is connected to the first valve port of the four-way reversing valve, the second valve port of the four-way reversing valve is connected to the first port of the air-conditioning heat exchanger, the second port of the air-conditioning heat exchanger is connected to the first port of the shell and tube water source heat exchanger through the first filter, the first expansion valve, and the third filter in sequence, the second port of the shell and tube water source heat exchanger is connected to the fourth valve port of the four-way reversing valve, the third valve port of the four-way reversing valve is connected to the inlet of the first gas-liquid separator, and the outlet of the first gas-liquid separator is connected to the suction pipe of the first compressor; The exhaust pipe of the second compressor is connected to the first port of the hot water heat exchanger, the second port of the hot water heat exchanger is connected to the third port of the shell and tube water source heat exchanger through the second filter and the second expansion valve in sequence, the fourth port of the shell and tube water source heat exchanger is connected to the inlet of the second gas-liquid separator, and the outlet of the second gas-liquid separator is connected to the suction pipe of the second compressor.

2. The water source heat pump type waste heat recovery hot water air conditioning unit according to claim 1, characterized in that: A first sight glass is provided on the pipeline connecting the second port of the air conditioning heat exchanger and the first port of the shell and tube water source heat exchanger, and a second sight glass is provided on the pipeline connecting the second port of the hot water heat exchanger and the third port of the shell and tube water source heat exchanger.

3. The water source heat pump type waste heat recovery hot water air conditioning unit according to claim 1, characterized in that: Pressure switches and temperature sensors are provided on the suction pipe and the discharge pipe of the first compressor and the second compressor.

4. The water source heat pump type waste heat recovery hot water air conditioning unit according to claim 3, characterized in that: The shell and tube water source heat exchanger, air conditioning heat exchanger, and hot water heat exchanger are all provided with water inlet pipes and water outlet pipes; the water inlet pipe of the shell and tube water source heat exchanger is connected to the underground water pumping well, and the water outlet pipe is connected to the underground recharge well; the water inlet pipe and water outlet pipe of the air conditioning heat exchanger are connected to the user's terminal air conditioning equipment; the water inlet pipe and water outlet pipe of the hot water heat exchanger are connected to the hot water storage tank.

5. The water source heat pump type waste heat recovery hot water air conditioning unit according to claim 4, characterized in that: Each water outlet pipe is provided with a water flow switch and a temperature sensor; each water inlet pipe is provided with a temperature sensor; the water flow switch, pressure switch and temperature sensor are all connected to the controller.

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