Gas-liquid separator with heat exchange function

Abstract

The utility model discloses a gas-liquid separator with a heat exchange function, and belongs to the technical field of gas-liquid separators. The gas-liquid separator comprises a sealing cover, a barrel, a material distributing rod, a low-pressure pipe, a high-pressure pipe, an oil blocking cover and a pipeline assembly. Low-temperature and low-pressure gas-liquid coolants enter from the low-pressure end inlet, most of the liquid coolants are collected in the liquid collecting groove of the oil blocking cover and flow into the gap between the liquid flowing sleeve and the high-pressure pipe, and only a small amount of the liquid coolants directly drop into the cylinder body through the edge of the oil blocking cover. And a gaseous refrigerant passes through the pipeline assembly, then passes through a gap between the low-pressure pipe and the material distribution rod and is output through the low-pressure outlet. High-temperature and high-pressure gas enters a gap between the high-pressure pipe and the low-pressure pipe through a high-pressure inlet in the bottom of the barrel, exchanges heat with refrigerants in the gaps on the two sides at the same time and then is output from a high-pressure end outlet. Three medium flowing spaces for heat exchange are narrow slits, so that the heat exchange rate is high. Heat dissipation ribs are arranged on the low-pressure pipe, and heat dissipation reinforcing ribs are arranged on the pipe wall of the high-pressure pipe, so that the heat exchange area is increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas-liquid separators, in particular to a gas-liquid separator with heat exchange. Background Art

[0002] Most of the current gas-liquid separators do not have a heat exchange function, and some gas-liquid separators with a heat exchange function use the outer side of the spiral tube to perform heat exchange on the separated low-temperature and low-pressure liquid refrigerant. The pipeline is thin and long, the heat exchange flow resistance is large, and the heat exchange effect is poor. In addition, the gaseous refrigerant is directly output to the outside of the gas-liquid separator. The gaseous refrigerant has no heat exchange, resulting in poor refrigeration effect and poor heating outlet dryness, which affects the life of the compressor. Therefore, a new technical solution is urgently needed in the existing technology to solve this problem. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a gas-liquid separator with heat exchange to solve the technical problems that most of the current gas-liquid separators do not have the heat exchange function, and some gas-liquid separators with heat exchange function have large heat exchange flow resistance, poor heat exchange effect, poor refrigeration effect due to the lack of heat exchange of gaseous refrigerant, poor drying degree at the heating outlet, affecting the life of the compressor, etc.

[0004] A gas-liquid separator with heat exchange, comprising a sealing cover, a cylinder and a pipeline assembly, wherein the pipeline assembly comprises a tightly fitted air inlet pipeline and an air outlet pipeline, the upper opening of the air inlet pipeline is an air inlet, the upper opening of the air outlet pipeline is an air outlet, a vent hole is arranged at the lower part of the pipe wall adjacent to the air outlet pipeline, a pressure equalizing hole is arranged on the upper outer wall of the air outlet pipeline, an oil return hole is arranged at the bottom of the air outlet pipeline, and a filter screen is fixedly mounted at the bottom of the pipeline assembly;

[0005] A gas-liquid separator with heat exchange, further comprising a dividing rod, a low-pressure pipe, a high-pressure pipe and an oil-blocking cover, wherein the bottom of the cylinder is provided with a high-pressure inlet and a low-pressure outlet, and the upper opening of the cylinder is fixedly connected to the sealing cover; the upper part of the sealing cover is provided with a high-pressure end outlet, a low-pressure end inlet, a sealing cover protrusion and a connecting channel; a liquid flow sleeve is provided at the lower part of one side of the oil-blocking cover, and a liquid collecting groove is provided on the upper part of the oil-blocking cover at the outer periphery of the liquid flow sleeve, and a through hole for installing a pipeline assembly is provided on the other side of the oil-blocking cover, and the oil-blocking cover is installed inside the cylinder, and the upper cover of the oil-blocking cover is close to the sealing cover and a gap is left between the upper cover and the inner wall of the cylinder; the lower part of the liquid flow sleeve abuts against the inner bottom of the cylinder, and the interior of the liquid flow sleeve is sequentially covered with the high-pressure pipe, the low-pressure pipe and The invention relates to a dividing rod, and there are gaps between the liquid sleeve, the high-pressure pipe, the low-pressure pipe and the dividing rod, wherein the upper part of the gap between the liquid sleeve and the high-pressure pipe is connected to the low-pressure end inlet, the lower part of the gap between the liquid sleeve and the high-pressure pipe is connected to the bottom of the cylinder, the lower part of the gap between the high-pressure pipe and the low-pressure pipe is connected to the high-pressure inlet, the upper part of the gap between the high-pressure pipe and the low-pressure pipe is connected to the high-pressure end outlet, the upper part of the gap between the low-pressure pipe and the dividing rod is connected to one end of the connecting channel, and the lower part of the gap between the low-pressure pipe and the dividing rod is connected to the low-pressure outlet; the air outlet pipeline of the pipeline assembly passes through the through hole on the other side of the oil-blocking cover, and the air outlet is fixedly connected to the other end of the connecting channel; the air inlet is located below the oil-blocking cover and there is a gap between it and the oil-blocking cover.

[0006] The top of the distribution rod is provided with an inclined distribution head.

[0007] The dividing rod is a nylon dividing rod.

[0008] A protrusion is arranged at the lower part of the cylinder, and the high-pressure inlet and the low-pressure outlet are both arranged on the protrusion.

[0009] A riveted protrusion is arranged on the outer periphery of the upper portion of the through hole of the oil blocking cover.

[0010] The connecting channel is located at the upper part of the cover and is encapsulated by the cover protrusion.

[0011] The interior of the low-pressure pipe is provided with support ribs and heat dissipation ribs in the radial direction; the support ribs are in contact with the exterior of the material distribution rod.

[0012] Heat dissipation reinforcement ribs are radially arranged on both the inner and outer sides of the tube wall of the high-pressure tube.

[0013] Through the above design scheme, the utility model can bring the following beneficial effects:

[0014] In the utility model, low-temperature and low-pressure gas-liquid refrigerant enters from the low-pressure end inlet, and most of the liquid refrigerant is collected in the liquid collection groove of the oil-blocking cover and flows into the gap between the liquid sleeve and the high-pressure pipe. Only a small amount of liquid refrigerant drips directly into the cylinder through the edge of the oil-blocking cover. The gaseous refrigerant passes through the pipeline assembly, then passes through the gap between the low-pressure pipe and the distributor rod, and then is output through the low-pressure outlet. The high-temperature and high-pressure gas enters through the high-pressure inlet at the bottom of the cylinder, passes through the gap between the high-pressure pipe and the low-pressure pipe, and simultaneously performs heat exchange with the refrigerant in the gaps on both sides thereof, and then is output from the high-pressure end outlet. The flow spaces of the three media for heat exchange are all narrow gaps, so the heat exchange rate is high. Heat dissipation ribs are provided on the low-pressure pipe, and heat dissipation reinforcement ribs are provided on the pipe wall of the high-pressure pipe, thereby increasing the area of ​​heat exchange.

[0015] The utility model adopts a two-way heat exchange mode in which an inner tube is used for low-pressure gas circulation and heat exchange with a high-pressure tube, and the outer side of the high-pressure tube exchanges heat with an inlet liquid. The flow channel is short and thick, and the two-way heat exchange with liquid and gas has small heat exchange flow resistance and better heat exchange effect.

[0016] The gas-liquid separator with heat exchange function can make the temperature that cannot be lowered at the high-pressure end complement the low-pressure end. The temperature at the high-pressure end can be lowered and the refrigeration efficiency can be higher. After the low-temperature end absorbs heat, the outlet dryness is higher, which protects the compressor and makes the compressor more efficient. The gas-liquid separator disclosed by the utility model has high heat exchange efficiency, does not take up space after integration, and can better adapt to new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0018] Figure 1 This is a schematic structural diagram of a gas-liquid separator with heat exchange according to the utility model;

[0019] Figure 2 This is a structural schematic diagram of a sealing cover in a gas-liquid separator with heat exchange according to the utility model;

[0020] Figure 3 This is a schematic cross-sectional view of a sealing cover in a gas-liquid separator with heat exchange according to the utility model;

[0021] Figure 4 This is a schematic structural diagram of a material distribution rod in a gas-liquid separator with heat exchange according to the utility model;

[0022] Figure 5 This is a schematic structural diagram of a cylinder in a gas-liquid separator with heat exchange according to the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of a low-pressure pipe in a gas-liquid separator with heat exchange according to the utility model;

[0024] Figure 7This is a schematic diagram of the cross-sectional structure of a low-pressure pipe in a gas-liquid separator with heat exchange according to the utility model;

[0025] Figure 8 This is a schematic structural diagram of a high-pressure pipe in a gas-liquid separator with heat exchange according to the utility model;

[0026] Fig. 9 This is a schematic diagram of the cross-sectional structure of a high-pressure pipe in a gas-liquid separator with heat exchange according to the utility model;

[0027] Fig.10 This is a structural schematic diagram of a pipeline assembly in a gas-liquid separator with heat exchange according to the utility model;

[0028] Fig.11 This is a schematic diagram of the structure of a pipeline assembly in a gas-liquid separator with heat exchange according to the utility model, viewed from above;

[0029] Fig.12 The utility model is a schematic diagram of the connection relationship between a gas-liquid separator with heat exchange and an evaporator, a condenser and a compressor.

[0030] In the figure, 1-cap, 2-cylinder, 3-distributing rod, 4-low-pressure pipe, 5-high-pressure pipe, 6-oil blocking cover, 7-pipeline assembly, 101-high-pressure end outlet, 102-low-pressure end inlet, 103-capping protrusion, 104-connecting channel, 201-high-pressure inlet, 202-low-pressure outlet, 203-protrusion, 301-inclined distributing head, 401-support ribs, 402-heat dissipation ribs, 501-heat dissipation reinforcement ribs, 601-liquid flow sleeve, 602-liquid collection trough, 603-riveted protrusion, 701-air inlet, 702-air outlet, 703-filter, 704-pressure equalizing hole, 705-oil return hole, 706-vent. DETAILED DESCRIPTION

[0031] like Figures 1 to 11 As shown, a gas-liquid separator with heat exchange includes a sealing cover 1, a cylinder 2, a material distribution rod 3, a low-pressure pipe 4, a high-pressure pipe 5, an oil-blocking cover 6 and a pipeline assembly 7.

[0032] The pipeline assembly 7 includes an air inlet pipeline and an air outlet pipeline that fit closely together. The upper opening of the air inlet pipeline is an air inlet 701, and the upper opening of the air outlet pipeline is an air outlet 702. A vent hole 706 is provided at the lower part of the pipe wall adjacent to the air outlet pipeline and the air inlet pipeline, a pressure equalizing hole 704 is provided on the upper outer wall of the air outlet pipeline, and an oil return hole 705 is provided at the bottom of the air outlet pipeline. A filter screen 703 is fixedly mounted on the bottom of the pipeline assembly 7.

[0033] The bottom of the cylinder 2 is provided with a high-pressure inlet 201 and a low-pressure outlet 202. The upper opening of the cylinder 2 is fixedly connected to the cover 1. The lower part of the cylinder 2 is provided with a protrusion 203. The high-pressure inlet 201 and the low-pressure outlet 202 are both provided on the protrusion 203. The upper part of the cover 1 is provided with a high-pressure end outlet 101, a low-pressure end inlet 102 and a connecting channel 104; the connecting channel 104 is located at the upper part of the cover 1 and is encapsulated by the cover protrusion 103.

[0034] The lower part of the liquid flow sleeve 601 abuts against the inner bottom of the cylinder 2, and the interior of the liquid flow sleeve 601 is sequentially covered with a high-pressure pipe 5, a low-pressure pipe 4 and a dividing rod 3 from the outside to the inside, and gaps are left between the liquid flow sleeve 601, the high-pressure pipe 5, the low-pressure pipe 4 and the dividing rod 3, wherein the upper part of the gap between the liquid flow sleeve 601 and the high-pressure pipe 5 is connected to the low-pressure end inlet 102, the lower part of the gap between the liquid flow sleeve 601 and the high-pressure pipe 5 is connected to the bottom of the cylinder 2, the lower part of the gap between the high-pressure pipe 5 and the low-pressure pipe 4 is connected to the high-pressure inlet 201, the upper part of the gap between the high-pressure pipe 5 and the low-pressure pipe 4 is connected to the high-pressure end outlet 101, the upper part of the gap between the low-pressure pipe 4 and the dividing rod 3 is connected to one end of the connecting channel 104, and the lower part of the gap between the low-pressure pipe 4 and the dividing rod 3 is connected to the low-pressure outlet 202; the dividing rod 3 is a nylon dividing rod, and an inclined dividing head 301 is provided on the top of the dividing rod 3. The low-pressure pipe 4 is provided with support ribs 401 and heat dissipation ribs 402 in the radial direction inside; the support ribs 401 are in contact with the outside of the material distribution rod 3. Heat dissipation reinforcement ribs 501 are provided in the radial direction on the inner and outer sides of the pipe wall of the high-pressure pipe 5. The heat dissipation ribs 402 and the heat dissipation reinforcement ribs 501 both play the role of increasing the heat exchange area.

[0035] A liquid flow sleeve 601 is provided at the lower part of one side of the oil-blocking cover 6, a liquid collection groove 602 is provided at the upper part of the oil-blocking cover 6 on the periphery of the liquid flow sleeve 601, a through hole for installing the pipeline assembly 7 is provided on the other side of the oil-blocking cover 6, and a riveted protrusion 603 is provided on the upper periphery of the through hole. The oil-blocking cover 6 is installed inside the cylinder 2, and the upper cover of the oil-blocking cover 6 is close to the sealing cover 1 and a gap is left between the upper cover and the inner wall of the cylinder 2. Low-temperature and low-pressure gas-liquid refrigerant enters from the low-pressure end inlet 102, and most of the liquid refrigerant is collected in the liquid collection groove 602 of the oil-blocking cover 6 and flows into the gap between the liquid flow sleeve 601 and the high-pressure pipe 5, and only a small amount of liquid refrigerant drips directly into the cylinder 2 through the edge of the oil-blocking cover 6.

[0036] The air outlet pipeline of the pipeline assembly 7 passes through the through hole on the other side of the oil-blocking cover 6, and the air outlet 702 is fixedly connected to the other end of the connecting channel 104; the air inlet 701 is located below the oil-blocking cover 6 and a gap is left between the air inlet 701 and the oil-blocking cover 6, and the gaseous refrigerant enters the pipeline assembly 7 from the air inlet 701 and is output from the air outlet 702 to one end of the connecting channel 104.

[0037] The gaseous refrigerant passes through the pipeline assembly 7, then passes through the gap between the low-pressure pipe 4 and the distributor rod 3, and is then output through the low-pressure outlet 202. The high-pressure inlet 201 is connected to the outlet of the condenser, and the high-temperature and high-pressure gas in the condenser enters through the high-pressure inlet 201 at the bottom of the cylinder 2, passes through the gap between the high-pressure pipe 5 and the low-pressure pipe 4, and simultaneously performs heat exchange with the refrigerant in the gaps on both sides thereof, and is then output from the high-pressure end outlet 101. The high-pressure end outlet 101 is connected to an expansion valve, and is connected to the inlet of the evaporator through the expansion valve. The outlet of the evaporator is connected to the low-pressure end inlet 102. The low-pressure outlet 202 is connected to the compressor. The compressor is in turn connected to the inlet of the condenser. The connection relationship between the utility model and the evaporator, condenser and compressor is as follows. Fig.12 In the utility model, the flow spaces of the three media for heat exchange are all narrow gaps, so the heat exchange rate is high.

Claims

1. A gas-liquid separator with heat exchange, comprising a sealing cover (1), a cylinder (2) and a pipeline assembly (7), wherein the pipeline assembly (7) comprises an air inlet pipeline and an air outlet pipeline which are closely fitted, the upper opening of the air inlet pipeline is an air inlet (701), the upper opening of the air outlet pipeline is an air outlet (702), a vent hole (706) is arranged at the lower part of the pipe wall adjacent to the air outlet pipeline, a pressure equalizing hole (704) is arranged on the upper outer wall of the air outlet pipeline, an oil return hole (705) is arranged at the bottom of the air outlet pipeline, and a filter screen (703) is fixedly mounted on the bottom of the pipeline assembly (7); the characteristics are: The invention also comprises a material distribution rod (3), a low-pressure pipe (4), a high-pressure pipe (5) and an oil-blocking cover (6); the bottom of the cylinder (2) is provided with a high-pressure inlet (201) and a low-pressure outlet (202); the upper opening of the cylinder (2) is fixedly connected to the cover (1); the upper part of the cover (1) is provided with a high-pressure end outlet (101), a low-pressure end inlet (102) and a connecting channel (104); the lower part of one side of the oil-blocking cover (6) is provided with a liquid flow sleeve (601); the upper part of the oil-blocking cover (6) is connected to the liquid flow sleeve (104); The outer periphery of the (601) is provided with a liquid collecting groove (602), and the other side of the oil blocking cover (6) is provided with a through hole for installing the pipeline assembly (7). The oil blocking cover (6) is installed inside the cylinder (2), and the upper cover of the oil blocking cover (6) is close to the sealing cover (1) and a gap is left between the upper cover and the inner wall of the cylinder (2); the lower part of the liquid flow sleeve (601) is in contact with the inner bottom of the cylinder (2), and the interior of the liquid flow sleeve (601) is sequentially covered with a high-pressure pipe (5), a low-pressure pipe (4) and a material distribution rod (3) from the outside to the inside, and the liquid flow sleeve (601) is provided with a high-pressure pipe (5), a low-pressure pipe (4) and a material distribution rod (3) in sequence ... Gaps are left between the liquid sleeve (601), the high-pressure pipe (5), the low-pressure pipe (4) and the material distribution rod (3), wherein the upper part of the gap between the liquid sleeve (601) and the high-pressure pipe (5) is connected to the low-pressure end inlet (102), the lower part of the gap between the liquid sleeve (601) and the high-pressure pipe (5) is connected to the bottom of the cylinder (2), the lower part of the gap between the high-pressure pipe (5) and the low-pressure pipe (4) is connected to the high-pressure inlet (201), and the upper part of the gap between the high-pressure pipe (5) and the low-pressure pipe (4) is connected to the high-pressure end outlet (102). The air outlet (702) is connected to the oil blocking cover (6), the air inlet (701) is located below the oil blocking cover (6) and a gap is left between the air inlet (701) and the oil blocking cover (6).

2. A gas-liquid separator with heat exchange according to claim 1, characterized in that: The top of the distribution rod (3) is provided with an inclined distribution head (301).

3. A gas-liquid separator with heat exchange according to claim 1 or 2, characterized in that: The distribution rod (3) is a nylon distribution rod.

4. A gas-liquid separator with heat exchange according to claim 1 or 2, characterized in that: A protrusion (203) is provided at the lower part of the cylinder (2), and the high-pressure inlet (201) and the low-pressure outlet (202) are both provided on the protrusion (203).

5. The gas-liquid separator with heat exchange according to claim 1, characterized in that: A riveted protrusion (603) is provided on the outer periphery of the upper portion of the through hole of the oil blocking cover (6).

6. A gas-liquid separator with heat exchange according to claim 1, characterized in that: The connecting channel (104) is located at the upper part of the cover (1) and is enclosed by the cover protrusion (103).

7. The gas-liquid separator with heat exchange according to claim 1, characterized in that: The interior of the low-pressure pipe (4) is provided with support ribs (401) and heat dissipation ribs (402) along the radial direction; the support ribs (401) are in contact with the exterior of the material distribution rod (3).

8. The gas-liquid separator with heat exchange according to claim 1, characterized in that: Heat dissipation reinforcement ribs (501) are radially arranged on both the inner and outer sides of the tube wall of the high-pressure tube (5).

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