Gas-liquid separator, compressor assembly and household appliance

Abstract

The gas-liquid separator comprises an air suction pipe, an upper barrel, a filter screen assembly, a liquid separation barrel, a lower barrel and an air outlet pipe, the air suction pipe is arranged at the top of the upper barrel, an air supply port of the air suction pipe is communicated with the upper barrel, the air outlet pipe is arranged at the bottom of the lower barrel, and the filter screen assembly is arranged on the lower barrel. A circular truncated cone cylinder is arranged at the air supply end of the air suction pipe, the circular truncated cone cylinder is located in the upper cylinder, and a small-diameter port of the circular truncated cone cylinder communicates with an air supply port of the air suction pipe in a butt joint mode; the large-diameter port of the circular truncated cone cylinder is located below the small-diameter port of the circular truncated cone cylinder in the vertical direction and is opposite to the filter screen assembly. According to the gas-liquid separator, vortex can be prevented from being generated in the gas inlet cavity, so that the gas suction resistance and vibration in the cavity are effectively reduced, the gas-liquid separation efficiency and effect are improved, the purposes of vibration and noise reduction are achieved, and then the operation energy efficiency of a compressor and the operation energy efficiency of household appliances are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas-liquid separation, and in particular to a gas-liquid separator, a compressor assembly having the gas-liquid separator, and a household appliance having the compressor assembly. Background Art

[0002] The gas-liquid separator used on the compressor is also called a liquid separator, liquid receiver, etc. Its main function is to separate the refrigerant gas-liquid mixture from the evaporator of the air-conditioning system to ensure that the compressor can inhale the gaseous refrigerant and work normally.

[0003] See also Figure 1 The existing gas-liquid separator 10 is usually composed of an upper intake pipe 113, an upper cylinder 111, a filter assembly 115, a liquid separator cylinder 112 and an outlet pipe 114, so that the refrigerant gas-liquid mixture in the evaporator of the air-conditioning system flows from the intake pipe 113 into the cavity of the upper cylinder 111, and flows into the cavity of the liquid separator cylinder 112 after passing through the filter assembly 115 for gas-liquid separation. The separated gaseous refrigerant is delivered to the compressor pump body through the outlet pipe 114, and the separated liquid is stored in the lower cylinder located below the liquid separator cylinder 112.

[0004] However, the cylinder wall of the upper cylinder 111 of the existing gas-liquid separator 10 is hemispherical or arc-shaped. When the refrigerant gas-liquid mixture enters the cavity of the upper cylinder 111 through the intake pipe 113, vortices will be generated around the hemispherical or arc-shaped cylinder wall close to the upper cylinder 111, resulting in increased intake resistance and increased vibration in the upper air intake cavity of the gas-liquid separator 10, thereby affecting the gas-liquid separation efficiency and effect, and generating larger vibration noise, thereby affecting the operating energy efficiency of the compressor. Summary of the invention

[0005] The first object of the present invention is to provide a gas-liquid separator that can avoid the generation of vortices in the air intake cavity, thereby effectively reducing the suction resistance and vibration in the cavity, improving the gas-liquid separation efficiency and effect, and achieving the purpose of vibration reduction and noise reduction, thereby improving the operating energy efficiency of the compressor and the operating energy efficiency of household appliances.

[0006] A second object of the present invention is to provide a compressor assembly having the above-mentioned gas-liquid separator.

[0007] A third object of the present invention is to provide a household appliance having the above compressor assembly.

[0008] In order to achieve the first purpose of the present invention, the present invention provides a gas-liquid separator, comprising an intake pipe, an upper cylinder, a filter assembly, a liquid separation cylinder, a lower cylinder and an exhaust pipe, the upper cylinder is located at the upper end of the liquid separation cylinder in a vertical direction and is connected to the liquid separation cylinder, the lower cylinder is located at the lower end of the liquid separation cylinder in a vertical direction and is connected to the liquid separation cylinder, the filter assembly is located in the upper port of the liquid separation cylinder, the intake pipe is arranged at the top of the upper cylinder, the air inlet port of the intake pipe is used to be connected to a supply device, the air delivery port of the intake pipe is connected to the upper cylinder, the exhaust pipe is arranged at the bottom of the lower cylinder, the air inlet port of the exhaust pipe is inserted into the interior of the liquid separation cylinder, the exhaust port of the exhaust pipe is used to be connected to a receiving device, the air delivery end of the intake pipe is provided with a truncated cone cylinder, the truncated cone cylinder is located in the interior of the upper cylinder, and the small-diameter port of the truncated cone cylinder is butt-connected with the air delivery port of the intake pipe, the large-diameter port of the truncated cone cylinder is located below the small-diameter port of the truncated cone cylinder in a vertical direction and is arranged opposite to the filter assembly.

[0009] It can be seen from the above scheme that the air inlet port of the air intake pipe of the gas-liquid separator of the present invention is used to communicate with the evaporator of the air-conditioning system, so that the gas-liquid mixed refrigerant is sucked into the air intake pipe from the air inlet port of the air intake pipe and flows into the cavity of the upper cylinder through the air delivery port of the air intake pipe. After being filtered by the filter assembly located in the upper port of the liquid separator cylinder, it flows into the cavity of the liquid separator cylinder for gas-liquid separation. The separated gaseous refrigerant flows into the air outlet pipe through the air inlet port of the air outlet pipe and is delivered to the compressor pump body through the exhaust port of the air outlet pipe. The separated liquid is stored in the lower cylinder.

[0010] Since the gas-liquid separator of the present invention is provided with a conical cylinder at the air delivery end of the intake pipe, the conical cylinder is located inside the upper cylinder, and the small-diameter port of the conical cylinder is connected to the air delivery port of the intake pipe, and the large-diameter port of the conical cylinder is located below the small-diameter port of the conical cylinder in the vertical direction and is arranged opposite to the filter assembly, the conical cylinder isolates the hemispherical or arc-shaped cylinder wall of the upper cylinder, and can smoothly guide the gas-liquid mixed refrigerant flowing out from the air delivery end of the intake pipe to the filter assembly so that the gas-liquid mixed refrigerant can smoothly and quickly flow into the cavity of the liquid separator cylinder for gas-liquid separation, thereby preventing the gas-liquid mixed refrigerant from being stirred in the cavity of the upper cylinder to generate vortices, especially avoiding the generation of vortices on the circumferential side of the hemispherical or arc-shaped cylinder wall close to the upper cylinder, thereby effectively reducing the intake resistance and vibration in the cavity, improving the gas-liquid separation efficiency and effect, and achieving the purpose of vibration reduction and noise reduction, thereby improving the operating energy efficiency of the compressor and the operating energy efficiency of household appliances.

[0011] A preferred solution is that the inclined angle θ between the edge of the truncated cone cylinder and the plane where the large-diameter port is located is less than or equal to 35°.

[0012] A further solution is that the air outlet pipe has an inner insert pipe section, which extends in the vertical direction toward the filter assembly and is located inside the liquid separating cylinder, and the upper port of the inner insert pipe section close to the filter assembly is the air inlet port, the diameter of the large diameter port is D1, the outer circumferential diameter of the upper end of the inner insert pipe section is D2, the inner cavity diameter of the liquid separating cylinder is D3, D1>D2 and D1>0.6×D3.

[0013] A further solution is that the number of the air outlet pipes is two, the inner inserting pipe sections of the two air outlet pipes are arranged side by side inside the liquid separation cylinder, and the upper ends of the two inner inserting pipe sections form an upper end outer circumferential diameter D2.

[0014] A further solution is that the air outlet pipe is provided with an oil return port, which is located in the lower port of the liquid separation cylinder in the vertical direction.

[0015] A further solution is that the filter assembly includes a filter screen and a support frame, the support frame is located in the upper port of the liquid separation cylinder, and a protrusion is provided in the middle of the support frame protruding toward the large diameter port, the outer peripheral surface of the protrusion is provided in a spherical curved surface, and a plurality of guide holes are opened through the support frame in the vertical direction, and the plurality of guide holes are arranged on the periphery of the protrusion in the circumferential direction of the support frame, and the filter screen is arranged on the support frame and covers the protrusion and the guide holes above the large diameter port.

[0016] A further solution is that a downwardly extending guide plate is provided on the peripheral wall of each guide hole close to the protrusion, the horizontal projection of the guide plate is located in the corresponding guide hole, and the horizontal projection area of ​​the guide plate is smaller than the horizontal projection area of ​​the corresponding guide hole.

[0017] A further solution is that the filter assembly also includes an elastic sealing ring, the outer peripheral wall of the support frame is concavely provided with a ring groove, the inner peripheral side of the elastic sealing ring is embedded in the ring groove, and the outer peripheral side of the elastic sealing ring protrudes out of the ring groove and presses against the inner peripheral wall of the upper port of the liquid separation cylinder.

[0018] In order to achieve the second purpose of the present invention, the present invention provides a compressor assembly, including a gas-liquid separator, and the gas-liquid separator is the gas-liquid separator mentioned above.

[0019] In order to achieve the third objective of the present invention, the present invention provides a household appliance, comprising a compressor assembly, wherein the compressor assembly is the above-mentioned compressor assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of an existing gas-liquid separator.

[0021] Figure 2 It is a partial structural cross-sectional view of an embodiment of a compressor assembly of the present invention.

[0022] Figure 32 is a cross-sectional view of a gas-liquid separator in an embodiment of a compressor assembly of the present invention.

[0023] Figure 4 It is a partial structural cross-sectional view of a gas-liquid separator in an embodiment of a compressor assembly of the present invention.

[0024] Figure 5 It is a structural diagram of the cooperation between the suction pipe and the truncated cone cylinder of the gas-liquid separator in the compressor assembly embodiment of the present invention.

[0025] Figure 6 2 is a cross-sectional view of a support frame of a gas-liquid separator in an embodiment of a compressor assembly of the present invention.

[0026] Figure 7 It is a structural exploded view of the filter assembly of the gas-liquid separator in the compressor assembly embodiment of the present invention.

[0027] Figure 8 Schematic diagram of the air flow of the gas-liquid separator in the compressor assembly embodiment of the present invention.

[0028] Fig. 9 It is a comparison simulation diagram of frequency-refrigerant amount between the compressor assembly embodiment of the present invention and the existing compressor assembly.

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0030] See also Figures 2 to 5 The present embodiment discloses a compressor assembly 20, including a compressor 21 and a gas-liquid separator 22. The gas-liquid separator 22 includes an air intake pipe 221, an upper cylinder 222, a filter assembly, a liquid separation cylinder 223, a lower cylinder 227 and an air outlet pipe 224. The upper cylinder 222 is located at the upper end of the liquid separation cylinder 223 in the vertical direction and is connected to the liquid separation cylinder 223. The lower cylinder 227 is located at the lower end of the liquid separation cylinder 223 in the vertical direction and is connected to the liquid separation cylinder 223. The filter assembly is located in the upper port of the liquid separation cylinder 223. Meanwhile, the air intake pipe 221 of the present embodiment is arranged at the top of the upper cylinder 222, the air intake port 2211 of the air intake pipe 221 is used to communicate with the supply device, the air delivery port 2212 of the air intake pipe 221 is connected with the upper cylinder 222, the air outlet pipe 224 is arranged at the bottom of the lower cylinder 227, the air intake port 2241 of the air outlet pipe 224 is inserted into the interior of the liquid separation cylinder 223, and the air exhaust port 2242 of the air outlet pipe 224 is used to communicate with the receiving device. In addition, the air delivery end of the air intake pipe 221 of the present embodiment is provided with a truncated cone cylinder 225, the truncated cone cylinder 225 is located inside the upper cylinder 222, and the small diameter port of the truncated cone cylinder 225 is connected to the air delivery port 2212 of the air intake pipe 221, and the large diameter port of the truncated cone cylinder 225 is located below the small diameter port of the truncated cone cylinder 225 in the vertical direction and is arranged opposite to the filter assembly.

[0031] Among them, since the gas-liquid separator 22 of this embodiment cooperates with the compressor 21 to constitute the compressor assembly 20 of this embodiment, that is, the supply device of this embodiment is the evaporator of the air-conditioning system, and the receiving device of this embodiment is the pump body of the compressor 21, the air inlet port 2211 of the air intake pipe 221 of the gas-liquid separator 22 of this embodiment is used to be connected with the evaporator of the air-conditioning system, and the exhaust port 2242 of the air outlet pipe 224 of the gas-liquid separator 22 of this embodiment is used to be connected with the pump body of the compressor 21.

[0032] In this embodiment, the air inlet port 2211 of the air intake pipe 221 of the gas-liquid separator 22 is used to communicate with the evaporator of the air-conditioning system, so that the gas-liquid mixed refrigerant is sucked into the air intake pipe 221 from the air inlet port 2211 of the air intake pipe 221 and flows into the cavity of the upper cylinder 222 through the air delivery port 2212 of the air intake pipe 221. After being filtered by the filter assembly located in the upper port of the liquid separator cylinder 223, it flows into the cavity of the liquid separator cylinder 223 for gas-liquid separation. The separated gaseous refrigerant flows into the outlet pipe 224 through the air inlet port 2241 of the outlet pipe 224 and is delivered to the pump body of the compressor 21 through the exhaust port 2242 of the outlet pipe 224. The separated liquid is stored in the lower cylinder 227. Since the gas-liquid separator 22 of this embodiment is provided with a conical cylinder 225 at the air delivery end of the intake pipe 221, the conical cylinder 225 is located inside the upper cylinder 222, and the small-diameter port of the conical cylinder 225 is connected to the air delivery port 2212 of the intake pipe 221, and the large-diameter port of the conical cylinder 225 is located below the small-diameter port of the conical cylinder 225 in the vertical direction and is arranged opposite to the filter assembly, the conical cylinder 225 isolates the hemispherical or arc-shaped cylinder wall of the upper cylinder 222, and can smoothly guide the gas-liquid mixed refrigerant flowing out of the air delivery end of the intake pipe 221 to the filter assembly so that the gas-liquid mixed refrigerant can smoothly and quickly flow into the cavity of the liquid separator cylinder 223 for gas-liquid separation. Figure 8 As shown, the gas-liquid mixed refrigerant is prevented from stirring in the cavity of the upper cylinder 222 to generate vortices, especially the circumferential side of the hemispherical or arc-shaped cylinder wall close to the upper cylinder 222, thereby effectively reducing the suction resistance and the vibration in the cavity, improving the gas-liquid separation efficiency and effect, and achieving the purpose of vibration reduction and noise reduction, thereby improving the operating energy efficiency of the compressor 21 and the operating energy efficiency of household appliances.

[0033] Specifically, Fig. 9As shown, according to the frequency-refrigerant amount comparison simulation diagram of the compressor assembly 20 of this embodiment equipped with the gas-liquid separator 22 of this embodiment and the existing compressor assembly equipped with the existing gas-liquid separator 10, it can be known that under high-frequency operating conditions, the operating energy efficiency of the compressor 21 of this embodiment can be improved by at least 1.8% compared with the existing compressor assembly, and even the operating energy efficiency of the compressor 21 of this embodiment can be improved to 3.5% compared with the existing compressor assembly. Therefore, the gas-liquid separator 22 of this embodiment can significantly and effectively improve the operating energy efficiency of the compressor 21 compared with the existing gas-liquid separator 10.

[0034] In order to further improve the diversion effect, the inclination angle θ between the edge of the conical cylinder 225 of this embodiment and the plane where the large diameter port of the conical cylinder 225 is located is less than or equal to 35°. Specifically, the plane where the large diameter port of the conical cylinder 225 of this embodiment is located is a horizontal plane, then the inclination angle θ between the edge of the conical cylinder 225 of this embodiment and the horizontal direction is less than or equal to 35°.

[0035] In order to further ensure sufficient flow diversion area to improve the flow diversion effect, the outlet pipe 224 of this embodiment has an inner insert pipe section 2243, which extends toward the filter assembly in the vertical direction and is located inside the liquid separation cylinder 223, and the upper end of the inner insert pipe section 2243 close to the filter assembly is the air inlet port 2241 of the outlet pipe 224, and the diameter of the large diameter port of the truncated cone cylinder 225 of this embodiment is D1, the upper end outer diameter of the inner insert pipe section 2243 is D2, and the inner cavity diameter of the liquid separation cylinder 223 is D3, then D1>D2, and D1>0.6×D3. Specifically, the number of the outlet pipes 224 of this embodiment is two, and the inner insert pipe sections 2243 of the two outlet pipes 224 are arranged side by side inside the liquid separation cylinder 223, so that the upper end of the inner insert pipe section The outer diameter D2 is formed between the upper ends of the two inner insert pipe sections 2243. Furthermore, the air outlet pipe 224 of the present embodiment is provided with an oil return port 2244 , and the oil return port 2244 is located inside the lower end of the liquid separation cylinder 223 in the vertical direction.

[0036] See also Figure 6 and Figure 7The filter assembly of this embodiment includes a filter screen 226 and a support frame 228. The support frame 228 is located in the upper port of the liquid separation cylinder 223, and a protrusion 2281 is provided in the middle of the support frame 228 protruding toward the large-diameter port of the truncated cone cylinder 225. The outer peripheral surface of the protrusion 2281 is provided in a spherical curved surface. The support frame 228 is penetrated by a plurality of guide holes 2282 in the vertical direction. The plurality of guide holes 2282 are arranged on the outer periphery of the protrusion 2281 in the circumferential direction of the support frame 228. The filter screen 226 is arranged on the support frame 228 and covers the protrusion 2281 and the guide holes 2282 above the large-diameter port of the truncated cone cylinder 225. Thus, in this embodiment, a protrusion 2281 is provided in the middle of the support frame 228 protruding toward the large-diameter port of the conical cylinder 225, and a plurality of guide holes 2282 are arranged on the periphery of the protrusion 2281 in the circumferential direction of the support frame 228, which can guide the gas-liquid mixed refrigerant to move toward the inner cavity wall of the liquid separator cylinder 223. On the one hand, it can improve the separation effect and separation efficiency of the gas-liquid mixed refrigerant in the inner cavity of the liquid separator cylinder 223, and on the other hand, it can reduce the refrigerant airflow disturbance, reduce the suction resistance and the internal pressure pulsation of the gas-liquid separator 22, thereby improving the energy efficiency of the compressor 21 and reducing the noise level.

[0037] In order to further reduce the air suction resistance and further improve the gas-liquid separation effect and efficiency, a guide plate 2283 extending downward is provided on the peripheral wall of one side of each guide hole 2282 close to the protrusion 2281 in this embodiment, and the projection of the guide plate 2283 in the horizontal direction is located in the corresponding guide hole 2282, and the projection area of ​​the guide plate 2283 in the horizontal direction is smaller than the projection area of ​​the corresponding guide hole 2282 in the horizontal direction, so as to quickly guide the gas-liquid mixed refrigerant flowing downward from the protrusion 2281 to move toward the inner cavity peripheral wall of the liquid separation cylinder 223. Specifically, the guide surface 22831 of the guide plate 2283 close to the guide hole 2282 in this embodiment can be formed as a plane, a curved surface, or a combination of a plane and a curved surface.

[0038] In order to improve the installation firmness and sealing of the support frame 228, the filter assembly of this embodiment also includes an elastic sealing ring 229. The outer peripheral wall of the support frame 228 is concavely provided with an annular groove 2284. The inner peripheral side of the elastic sealing ring 229 is embedded in the annular groove 2284, and the outer peripheral side of the elastic sealing ring 229 protrudes from the annular groove 2284 and presses against the inner peripheral wall of the upper port of the liquid separation cylinder 223.

[0039] The above embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles of the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A gas-liquid separator, comprising an air intake pipe, an upper cylinder, a filter assembly, a liquid separation cylinder, a lower cylinder and an air outlet pipe, wherein the upper cylinder is located at the upper end of the liquid separation cylinder in the vertical direction and is connected to the liquid separation cylinder, the lower cylinder is located at the lower end of the liquid separation cylinder in the vertical direction and is connected to the liquid separation cylinder, and the filter assembly is located in the upper port of the liquid separation cylinder; The air intake pipe is arranged at the top of the upper cylinder, the air intake port of the air intake pipe is used to communicate with the supply device, the air delivery port of the air intake pipe is connected with the upper cylinder, the air outlet pipe is arranged at the bottom of the lower cylinder, the air intake port of the air outlet pipe is inserted into the interior of the liquid separation cylinder, and the air outlet port of the air outlet pipe is used to communicate with the receiving device, characterized in that: The air supply end of the intake pipe is provided with a conical cylinder, which is located inside the upper cylinder, and the small-diameter port of the conical cylinder is connected to the air supply port of the intake pipe, and the large-diameter port of the conical cylinder is located below the small-diameter port of the conical cylinder in the vertical direction and is arranged opposite to the filter assembly.

2. The gas-liquid separator according to claim 1, characterized in that: The inclined angle θ between the edge of the truncated cone cylinder and the plane where the large-diameter port is located is less than or equal to 35°.

3. The gas-liquid separator according to claim 1, characterized in that: The air outlet pipe has an inner insert pipe section, which extends toward the filter assembly in a vertical direction and is located inside the liquid separation cylinder, and an upper end of the inner insert pipe section close to the filter assembly is the air inlet port; The diameter of the large-diameter port is D1, the outer diameter of the upper end of the inner insert tube section is D2, the inner cavity diameter of the liquid separation cylinder is D3, D1>D2 and D1>0.6×D3.

4. The gas-liquid separator according to claim 3, characterized in that: There are two air outlet pipes, and the inner insert pipe sections of the two air outlet pipes are arranged side by side inside the liquid separation cylinder, and the upper end outer circumference diameter D2 is formed between the upper ends of the two inner insert pipe sections.

5. The gas-liquid separator according to claim 1, characterized in that: The air outlet pipe is provided with an oil return port, and the oil return port is located inside the lower end port of the liquid separation cylinder in the vertical direction.

6. The gas-liquid separator according to any one of claims 1 to 5, characterized in that: The filter assembly includes a filter and a support frame, the support frame is located in the upper port of the liquid separation cylinder, and the middle part of the support frame is provided with a protruding portion protruding toward the large-diameter port, and the outer peripheral surface of the protruding portion is provided in a spherical curved surface; The support frame is provided with a plurality of guide holes in the vertical direction, and the plurality of guide holes are arranged on the periphery of the protrusion in the circumferential direction of the support frame. The filter screen is arranged on the support frame and covers the protrusion and the guide holes above the large diameter port.

7. The gas-liquid separator according to claim 6, characterized in that: A guide plate extending downward is provided on a peripheral wall of each guide hole close to the raised portion, the horizontal projection of the guide plate is located in the corresponding guide hole, and the horizontal projection area of ​​the guide plate is smaller than the horizontal projection area of ​​the corresponding guide hole.

8. The gas-liquid separator according to claim 6, characterized in that: The filter assembly also includes an elastic sealing ring, the outer peripheral wall of the support frame is concavely provided with an annular groove, the inner peripheral side of the elastic sealing ring is embedded in the annular groove, and the outer peripheral side of the elastic sealing ring protrudes from the annular groove and presses against the inner peripheral wall of the upper port of the liquid separation cylinder.

9. A compressor assembly including a gas-liquid separator, characterized in that: The gas-liquid separator is the gas-liquid separator according to any one of claims 1 to 8.

10. A household appliance comprising a compressor assembly, characterized in that: The compressor assembly is the compressor assembly as claimed in claim 9 above.

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