Supercooling integrated gas-liquid separator

Abstract

The utility model discloses a supercooling integrated gas-liquid separator which belongs to the technical field of air conditioners and comprises a tank body, an air inlet pipe and an air outlet pipe, the top of the tank body is connected with the air outlet pipe and the air inlet pipe, one end of the air outlet pipe and one end of the air inlet pipe are both located inside the tank body, the other end of the air outlet pipe and the other end of the air inlet pipe are both located outside the tank body, and a supercooling double pipe and an auxiliary path inlet pipe are arranged in the tank body. The upper portion of the supercooling double pipe is connected with the upper portion of the auxiliary path inlet pipe through a tee joint, and the lower portion of the supercooling double pipe is connected with the lower portion of the auxiliary path inlet pipe through an electronic expansion valve. The supercooling coil is arranged in the gas-liquid separator, the supercooling function and the gas-liquid separation function are integrated into the gas-liquid separator, the space of the tank body is fully utilized, secondary heat exchange of a high-pressure side refrigerant and a low-pressure side refrigerant is achieved, the supercooling degree of the high-pressure side refrigerant is increased, the superheat degree of the low-pressure side refrigerant is improved, and the system performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field, concretely is a kind of supercooling integrated gas-liquid separator. BACKGROUND

[0002] At present, gas-liquid separator needs to have liquid storage purpose, so the volume of tank body needs to meet the storage of excess refrigerant, which leads to that the gas-liquid separator tank occupies a large air conditioning mechanical warehouse space, and limits the compact design of air conditioning shell.

[0003] The main road high-pressure side refrigerant and the main road low-pressure side refrigerant lack secondary heat exchange, due to system reliability limitation, overheating degree, supercooling degree target control limitation, and cannot match the best performance cycle and energy efficiency. The low-pressure side circulation quantity of low-temperature refrigerant in heating is low, and there is no effective scheme. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of supercooling integrated gas-liquid separators, solve the problem that existing gas-liquid separator occupies a large air conditioning mechanical warehouse space, main road high-pressure side refrigerant and low-pressure side refrigerant lack heat exchange.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of supercooling integrated gas-liquid separator, gas inlet pipe, gas outlet pipe, the top of the tank body is connected gas outlet pipe, gas inlet pipe, the one end of gas outlet pipe, gas inlet pipe is located inside tank body, the other end is located outside tank body, the tank body is equipped with supercooling double pipe, auxiliary road import pipe, the upper portion between supercooling double pipe and auxiliary road import pipe upper portion is connected by three-way, the lower portion between supercooling double pipe and auxiliary road import pipe lower portion is connected by electronic expansion valve.

[0006] Preferably, the tank body includes a cylinder body, an upper cover and a lower cover, and the upper and lower ends of the cylinder body are fixedly connected with the upper cover and the lower cover respectively.

[0007] Preferably, the three-way is arranged inside the cylinder body, and the electronic expansion valve is arranged outside the cylinder body.

[0008] Preferably, the three-way is further connected with a first refrigerant inlet and outlet pipe, and a heat-dissolving plug is arranged on the first refrigerant inlet and outlet pipe, and the port of the first refrigerant inlet and outlet pipe is located outside the cylinder body.

[0009] Preferably, one end of the supercooling double pipe connected with the three-way is connected with an auxiliary road refrigerant outlet pipe, and the port of the auxiliary road refrigerant outlet pipe is located outside the cylinder body.

[0010] Preferably, the lower portion of the supercooling double pipe is connected with a second refrigerant inlet and outlet pipe, and the port of the second refrigerant inlet and outlet pipe is located outside the cylinder body.

[0011] Preferably, the supercooling double pipe has a straight pipe structure or a serpentine ring structure.

[0012] Preferably, the bottom of the lower cover is fixedly connected with a base.

[0013] Preferably, the lower part of the supercooling double pipe and the lower part of the auxiliary road inlet pipe are in U-shaped structure.

[0014] Preferably, the auxiliary road refrigerant outlet pipe and the second refrigerant inlet and outlet pipe are in L-shaped structure.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The inside space of the gas-liquid separator tank is fully utilized, the supercooling coil is arranged inside, the supercooling function and the gas-liquid separation function are integrated into a gas-liquid separator, the tank space is arranged, the tank bottom and the outer wall extend the supercooling device connecting pipe, according to the system design matching, the pipeline connection is carried out, the space occupied by the independent supercooling device is saved, the system structure is more compact; while realizing the integrated design, because the supercooling coil and the gas-liquid separator are integrated, the secondary heat exchange of the high-pressure side refrigerant and the low-pressure side refrigerant can be realized, the supercooling degree of the high-pressure side refrigerant is increased, the superheating degree of the low-pressure side refrigerant is increased, the target valve opening degree control target value can be increased, the refrigerant circulation amount is increased, the inlet and outlet enthalpy difference of the heat exchanger is further increased, and the system performance is improved; the low-pressure side secondary heat exchange, the gas-liquid separator refrigerant participates in the circulation, and the low-temperature heating refrigerant circulation amount is increased. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure diagram of the supercooling integrated gas-liquid separator of the utility model;

[0018] Figure 2 It is the inside structure schematic view of the cylinder body of the supercooling integrated gas-liquid separator of the utility model;

[0019] Figure 3 It is the outside structure schematic view of the cylinder body of the supercooling integrated gas-liquid separator of the utility model;

[0020] Figure 4 It is the structure schematic view of the supercooling double pipe of the utility model in the shape of a snake and surrounding;

[0021] Figure 5 It is the air conditioning system schematic view with the supercooling integrated gas-liquid separator of the utility model.

[0022] In the drawing: tank body 1, cylinder body 101, upper cover 102, lower cover 103, gas outlet pipe 2, gas inlet pipe 3, supercooling double pipe 4, auxiliary road inlet pipe 5, three-way pipe 6, electronic expansion valve 7, first refrigerant inlet and outlet pipe 8, auxiliary road refrigerant outlet pipe 9, second refrigerant inlet and outlet pipe 10, base 11, compressor 12, four-way valve 13, liquid pipe operation valve 14, outer heat exchange 15, one-way valve 16, oil separator 17, outdoor heat exchange electronic expansion valve 18, gas pipe operation valve 19. DETAILED DESCRIPTION

[0023] Embodiment

[0024] Reference Figures 1 to 5 The overcooling integrated gas-liquid separator comprises a tank body 1, the tank body 1 comprises a barrel 101, an upper cover 102 and a lower cover 103, the upper cover 102 is fixedly connected with an outlet pipe 2 and an inlet pipe 3, one end of the outlet pipe 2 and the inlet pipe 3 is located inside the tank body 1, and the other end of the outlet pipe 2 and the inlet pipe 3 is located outside the tank body 1, the outlet pipe 2 is in a U-shaped structure, the barrel 101 is provided with an overcooling double pipe 4 and an auxiliary inlet pipe 5, the overcooling double pipe 4 is connected with the auxiliary inlet pipe 5 through a tee joint 6, the lower part of the overcooling double pipe 4 is connected with the auxiliary inlet pipe 5 through an electronic expansion valve 7, the tee joint 6 is located inside the barrel 101, and the electronic expansion valve 7 is located outside the barrel 101.

[0025] The tee joint 6 is further connected with a first refrigerant inlet and outlet pipe 8, the first refrigerant inlet and outlet pipe 8 is provided with a heat melting plug, and the port of the first refrigerant inlet and outlet pipe 8 is located outside the barrel 101. One end of the overcooling double pipe 4 connected with the tee joint 6 is connected with an auxiliary refrigerant outlet pipe 9, the auxiliary refrigerant outlet pipe 9 is connected with a heat melting plug and is in an L-shaped structure, and the port of the auxiliary refrigerant outlet pipe 9 is located outside the barrel 101. The lower part of the overcooling double pipe 4 is further connected with a second refrigerant inlet and outlet pipe 10, the second refrigerant inlet and outlet pipe 10 is connected with a heat melting plug and is also in an L-shaped structure, and the port of the second refrigerant inlet and outlet pipe 10 is located outside the barrel 101. The end of the overcooling double pipe 4 and the auxiliary inlet pipe 5 connected with the electronic expansion valve 7 is in a U-shaped structure and is further connected with a heat melting plug.

[0026] The overcooling double pipe 4 in the embodiment is in a straight pipe structure and is vertically arranged in the upper and lower spaces of the tank body 1. Figure 4 The overcooling double pipe is in a serpentine winding structure and is located at the bottom of the gas-liquid separator, and can be selected according to the gas separation structure; preferably, the overcooling double pipe is in a straight pipe structure and is vertically arranged in the upper and lower spaces of the tank body 1.

[0027] The bottom of the lower cover 103 of the tank body 1 is further provided with a base 11 for supporting the entire gas-liquid separator.

[0028] Figure 5 The overcooling integrated gas-liquid separator is applied to an air conditioning system, wherein the realization arrow represents the direction of the refrigerant in the refrigeration state, and the dotted arrow represents the direction of the refrigerant in the heating state. The outlet pipe 2 is connected with a compressor 12, the inlet pipe 3 is connected with a four-way valve 13, the second refrigerant inlet and outlet pipe 10 is connected with a liquid pipe operation valve 14 through a pipeline and is connected with an indoor unit, the auxiliary refrigerant outlet pipe 9 is connected with the outlet pipe 2, the first refrigerant inlet and outlet pipe 8 is connected with an outdoor heat exchange 15 through a pipeline, and the outdoor unit is further provided with a one-way valve 16, a silencer 17, an outdoor heat exchange electronic expansion valve 18, a gas pipe operation valve 19 and the like.

[0029] The working principle of the supercooling integrated gas-liquid separator of the embodiment is as follows:

[0030] During refrigeration, the medium-temperature high-pressure refrigerant from the outdoor heat exchanger 15 enters from the first refrigerant inlet and outlet pipe 8, is divided into two parts through the three-way pipe 6, the main path passes through the three-way pipe 6 and the supercooling double pipe 4, enters the indoor unit from the second refrigerant inlet and outlet pipe 10, the auxiliary path passes through the three-way pipe 6, the auxiliary inlet pipe 5, the electronic expansion valve 7, the supercooling double pipe 5, the auxiliary refrigerant outlet pipe 9, enters the outlet pipe 2 and returns to the compressor, the refrigerant in the auxiliary path is throttled into low-temperature low-pressure refrigerant through the electronic expansion valve 7, so that the refrigerant in the main path and the refrigerant in the auxiliary path complete heat exchange in the supercooling double pipe 4, the refrigerant in the main path completes supercooling operation, and if the compressor is a jet enthalpy-increasing compressor, the auxiliary refrigerant outlet pipe 9 can be connected to the compressor enthalpy-increasing port through the electromagnetic valve to complete enthalpy increase.

[0031] During heating, the medium-temperature high-pressure refrigerant from the indoor heat exchange condenser enters from the second refrigerant inlet and outlet pipe 10, the refrigerant in the main path sequentially flows through the supercooling double pipe 4, the three-way pipe 6 and the first refrigerant inlet and outlet pipe 8 to enter the outdoor heat exchanger 15, if the compressor is a non-jet enthalpy-increasing compressor, the refrigerant in the auxiliary path does not flow, if the compressor is a jet enthalpy-increasing compressor, the refrigerant in the auxiliary path sequentially flows through the three-way pipe 6, the auxiliary inlet pipe 5, the electronic expansion valve 7, the supercooling double pipe 4 and the auxiliary refrigerant outlet pipe 9, the auxiliary refrigerant outlet pipe 9 is an auxiliary outlet, and the auxiliary refrigerant outlet pipe 9 can be connected to the compressor enthalpy-increasing port through the electromagnetic valve to complete the purpose of enthalpy increase or temperature decrease.

[0032] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A supercooling integrated gas-liquid separator, comprising a tank body, an air inlet pipe, and an air outlet pipe, wherein the top of the tank body is connected to the air outlet pipe and the air inlet pipe, one end of each of the air outlet pipe and the air inlet pipe is located inside the tank body, and the other end is located outside the tank body, characterized in that: A subcooling double pipe and an auxiliary inlet pipe are provided in the tank body. The upper part of the subcooling double pipe is connected to the upper part of the auxiliary inlet pipe through a tee, and the lower part of the subcooling double pipe is connected to the lower part of the auxiliary inlet pipe through an electronic expansion valve.

2. The subcooling integrated gas-liquid separator according to claim 1, characterized in that: The tank body comprises a cylinder, an upper cover and a lower cover, and the upper and lower ends of the cylinder are fixedly connected to the upper cover and the lower cover respectively.

3. The subcooling integrated gas-liquid separator according to claim 2, characterized in that: The three-way valve is arranged inside the cylinder, and the electronic expansion valve is arranged outside the cylinder.

4. The subcooling integrated gas-liquid separator according to claim 2, characterized in that: The tee is also connected to the first refrigerant inlet and outlet pipes, and the first refrigerant inlet and outlet pipes are provided with thermal thrombus, and the ports of the first refrigerant inlet and outlet pipes are located outside the cylinder.

5. The subcooling integrated gas-liquid separator according to claim 2, characterized in that: One end of the subcooling double-tube connecting tee is connected to the auxiliary refrigerant outlet pipe, and the port of the auxiliary refrigerant outlet pipe is located outside the cylinder.

6. The subcooling integrated gas-liquid separator according to claim 5, characterized in that: The lower portion of the supercooling double tube is connected to the second refrigerant inlet and outlet pipes, and the ports of the second refrigerant inlet and outlet pipes are located outside the cylinder.

7. The subcooling integrated gas-liquid separator according to claim 1, characterized in that: The supercooling double tube is a straight tube structure or a serpentine winding structure.

8. The subcooling integrated gas-liquid separator according to claim 2, characterized in that: The bottom of the lower cover is fixedly connected with a base.

9. The subcooling integrated gas-liquid separator according to claim 1, characterized in that: The lower part of the supercooling double tube and the lower part of the auxiliary road inlet tube are U-shaped structures.

10. The subcooling integrated gas-liquid separator according to claim 6, characterized in that: The auxiliary refrigerant outlet pipe and the second refrigerant inlet and outlet pipes are L-shaped structures.

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