A liquid-gas separation device with liquid storage and waste heat recovery functions

Abstract

The present invention discloses a liquid-gas separation device with both liquid storage and waste heat recovery functions, which belongs to the technical field of automobile air-conditioning accessories, and particularly relates to a gas-liquid separator; it comprises a cylinder, wherein the upper and lower ends of the cylinder are respectively provided with an upper end cover and a lower end cover, the upper end cover is provided with an air inlet and an air suction port, and the lower end cover is provided with a liquid outlet and a liquid inlet; a waste heat recovery component is provided in the cylinder, and the cylinder is divided into a gas-liquid separation chamber and a liquid storage chamber by the waste heat recovery component; a liquid guide tube is provided in the liquid storage chamber, one end of the liquid guide tube is connected to the liquid inlet, and the other end is connected to the waste heat recovery component. The present invention has both liquid storage and waste heat recovery functions, strengthens the heat exchange effect, and improves the gas-liquid separation efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile air-conditioning accessories, and in particular relates to a gas-liquid separator. Background Art

[0002] The gas-liquid separator in existing new energy vehicles fails to utilize the high-temperature and high-pressure liquid coming out of the condenser or compressor, resulting in a waste of energy. In addition, the automobile air-conditioning system requires a large amount of refrigerant to run during the cooling process, and a small amount of refrigerant to participate in the operation during the heating process. When heating, if the refrigerant participates too much, the heating effect will be reduced. When cooling, if the refrigerant participates too little, the purpose of cooling cannot be achieved. Therefore, we designed a gas-liquid separator with a liquid storage function to store the liquid during heating. During the cooling process, a large amount of refrigerant is in operation, and the tank temperature is very low. Summary of the invention

[0003] The purpose of the present invention is to provide a liquid-gas separation device with liquid storage and waste heat recovery functions to solve the technical problems of poor refrigerant feed control effect and failure to fully recycle energy in the existing air-conditioning system during cooling and heating.

[0004] To achieve the above purpose, the specific technical solution of a liquid-gas separation device with both liquid storage and waste heat recovery functions of the present invention is as follows:

[0005] A liquid-gas separation device with both liquid storage and waste heat recovery functions, comprising a cylinder, wherein the upper and lower ends of the cylinder are respectively provided with an upper end cover and a lower end cover, the upper end cover is provided with an air inlet and an air suction port, and the lower end cover is provided with a liquid outlet and a liquid inlet;

[0006] A waste heat recovery component is provided in the cylinder, and the cylinder is divided into a gas-liquid separation chamber and a liquid storage chamber by the waste heat recovery component;

[0007] A liquid guide tube is arranged in the liquid storage cavity, one end of the liquid guide tube is connected to the liquid inlet, and the other end of the liquid guide tube is connected to the waste heat recovery component.

[0008] Furthermore, a filter cartridge is provided in the liquid storage cavity, and the filter cartridge is connected to the liquid outlet.

[0009] Furthermore, the waste heat recovery component includes a partition formed integrally with the inner wall of the cylinder, and a drainage groove is provided at one end of the partition close to the liquid storage cavity, and a preheating baffle is provided on the drainage groove, and the drainage groove is sealed by the preheating baffle to form a waste heat recovery cavity;

[0010] The preheating baffle is provided with two through holes, one of which is connected to the liquid guide tube, and the through hole is connected to the liquid inlet end of the drainage groove.

[0011] Furthermore, another through hole is arranged offset from the liquid outlet.

[0012] Furthermore, the preheating baffle is connected to the partition through stainless steel screws.

[0013] Furthermore, an upper supporting boss and a lower supporting boss are provided at both ends of the liquid guiding tube, the upper supporting boss abuts against the preheating baffle, and the lower supporting boss abuts against the lower end cover.

[0014] Furthermore, the upper end cover and the lower end cover are both welded to the cylinder.

[0015] Furthermore, a temperature sensor is also arranged in the liquid storage cavity.

[0016] Furthermore, an oil blocking cover, an air inlet pipe and an air suction pipe are arranged in the gas-liquid separation chamber, the upper pipe opening of the air suction pipe passes through the oil blocking cover and is fixedly connected to the air suction port, a gap is left between the upper part of the oil blocking cover and the upper end cover, and a gap is left between the upper pipe opening of the air inlet pipe and the lower part of the oil blocking cover;

[0017] The air inlet pipe is connected to the lower part of the air intake pipe to form a gas flow channel.

[0018] Furthermore, an oil return cover and a filter are sequentially arranged at the lower parts of the air inlet pipe and the air suction pipe, an oil return through hole is arranged at the bottom of the oil return cover, and the filter is connected to the inner bottom of the cylinder.

[0019] The liquid-gas separation device with both liquid storage and waste heat recovery functions of the present invention has the following advantages: it has both liquid storage and waste heat recovery functions, strengthens the heat exchange effect, and improves the gas-liquid separation efficiency; the liquid storage device is integrated on the liquid-gas separator to improve the refrigeration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of a liquid-gas separation device having both liquid storage and waste heat recovery functions according to the present invention.

[0021] Figure 2 The invention discloses a preheating baffle plate for a liquid-gas separation device having both liquid storage and waste heat recovery functions.

[0022] Figure 3 for Figure 1 Section view at AA.

[0023] Figure 4 The present invention is a schematic structural diagram of an upper end cover of a liquid-gas separation device having both liquid storage and waste heat recovery functions.

[0024] Figure 5 The present invention is a schematic structural diagram of the lower end cover of a liquid-gas separation device having both liquid storage and waste heat recovery functions.

[0025] Figure 6The invention discloses a cross-sectional view of an air inlet pipe and an air intake pipe of a liquid-gas separation device having both liquid storage and waste heat recovery functions.

[0026] Figure 7 It is a cross-sectional view of convex 6 at BB.

[0027] Figure 8 The figure is a top view of an oil return cover of a liquid-gas separation device having both liquid storage and waste heat recovery functions according to the present invention.

[0028] Fig. 9 for Figure 8 Cross-sectional view at CC.

[0029] Explanation of markings in the figure: 1. Cylinder; 2. Upper end cover; 3. Lower end cover; 4. Air inlet; 5. Air intake; 6. Liquid outlet; 7. Liquid inlet; 8. Waste heat recovery component; 801. Partition; 802. Drainage trough; 803. Preheating baffle; 9. Gas-liquid separation chamber; 10. Liquid storage chamber; 11. Liquid guide tube; 12. Filter cartridge; 13. Through hole; 14. Stainless steel screw; 15. Upper supporting boss; 16. Lower supporting boss; 17. Temperature sensor; 18. Oil blocking cover; 19. Air inlet pipe; 20. Air intake pipe; 21. Oil return cover; 22. Filter screen; 23. Oil return through hole; 24. Desiccant assembly. DETAILED DESCRIPTION

[0030] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a liquid-gas separation device with both liquid storage and waste heat recovery functions of the present invention in conjunction with the accompanying drawings.

[0031] like Figure 1-Figure 9 As shown, the present invention is a liquid-gas separation device with both liquid storage and waste heat recovery functions, comprising a cylinder 1, wherein the upper and lower ends of the cylinder 1 are respectively provided with an upper end cover 2 and a lower end cover 3, wherein the upper end cover 2 is provided with an air inlet 4 and an air suction port 5, and the lower end cover 3 is provided with a liquid outlet 6 and a liquid inlet 7;

[0032] The cylinder 1 is provided with a waste heat recovery component 8, which divides the cylinder 1 into a gas-liquid separation chamber 9 and a liquid storage chamber 10;

[0033] A liquid guide tube 11 is disposed in the liquid storage chamber 10 , one end of the liquid guide tube 11 is connected to the liquid inlet 7 , and the other end of the liquid guide tube 11 is connected to the waste heat recovery component 8 .

[0034] In this embodiment, a filter cartridge 12 is further provided in the liquid storage chamber 10, and the filter cartridge 12 is connected to the liquid outlet 6; when the liquid in the filter compressor or condenser enters the liquid storage chamber 10, it carries bubbles. By providing the filter cartridge 12, the liquid carrying the bubbles is filtered. At the same time, when the bubbles come into contact with the filter cartridge 12, the bubbles will break, thereby removing the bubbles in the liquid to a certain extent. If the entire system contains bubbles, abnormal noise will be generated during the operation of the device. In this way, the working efficiency of the gas-liquid separation device is further improved.

[0035] In this embodiment, the waste heat recovery component 8 includes a partition 801 integrally formed with the inner wall of the cylinder 1, and a drainage groove 802 is provided at one end of the partition 801 close to the liquid storage chamber 10. The inner wall of the drainage groove 802 is wavy to increase the contact surface area, so that the heat transfer is faster and the heat dissipation effect is better. A preheating baffle 803 is provided on the drainage groove 802, and the drainage groove 802 is sealed by the preheating baffle 803 to form a waste heat recovery chamber;

[0036] The preheating baffle 803 is provided with two through holes 13 , one of which is connected to the liquid guiding tube 11 , and the through hole 13 is connected to the liquid inlet end of the drainage groove 802 .

[0037] In this embodiment, the other through hole 13 is staggered with the liquid outlet 6 to prevent the liquid from falling from the through hole 13 and impacting the filter screen.

[0038] In this embodiment, the preheating baffle 803 is connected to the partition 801 via a stainless steel screw 14 .

[0039] In this embodiment, an upper supporting boss 15 and a lower supporting boss 16 are provided at both ends of the liquid guide tube 11. The upper supporting boss 15 abuts against the preheating baffle 803, and the lower supporting boss 16 abuts against the lower end cover 3. The upper supporting boss 15 and the lower supporting boss 16 cooperate with the residual heat baffle and the lower end cover 3, so that the sealing effect in the liquid storage chamber 10 is better.

[0040] In this embodiment, the upper end cover 2 and the lower end cover 3 are both welded to the cylinder 1 .

[0041] In this embodiment, a temperature sensor 17 is further provided in the liquid storage chamber 10 to facilitate detection of the internal temperature of the gas-liquid separator device and to prepare for controlling the flow rate.

[0042] In this embodiment, an oil blocking cover 18, an air inlet pipe 19 and an air suction pipe 20 are arranged in the gas-liquid separation chamber 9, the oil blocking cover 18 is bowl-shaped, a pressure equalizing through hole 13 is arranged on the side wall of the upper part of the air suction pipe 20, a desiccant assembly 24 is arranged on the outer wall of the air suction pipe 20 away from the air inlet pipe 19, the upper pipe opening of the air suction pipe 20 passes through the oil blocking cover 18 and is fixedly connected to the air suction port 5, a gap is left between the upper part of the oil blocking cover 18 and the upper end cover 2, a gap is left between the upper pipe opening of the air inlet pipe 19 and the lower part of the oil blocking cover 18, and a gap is set between the side of the oil blocking cover 18 and the inner wall of the cylinder 1;

[0043] The lower parts of the air intake pipe 19 and the air intake pipe 20 are connected to form a gas flow channel. The pipe wall of the air intake pipe 20 is cooperatively connected with the pipe wall at the adjacent part of the air intake pipe 19, or the air intake pipe 20 and the adjacent part of the air intake pipe 19 share a pipe wall. The air intake pipe 19 and the air intake pipe 20 together form an oblate cross-section.

[0044] In this embodiment, the lower parts of the intake pipe 19 and the intake pipe 20 are provided with an oil return cover 21 and a filter screen 22 in sequence, the bottom of the oil return cover 21 is provided with an oil return hole 23, the filter screen 22 is connected to the inner bottom of the cylinder 1, the platform on the top of the oil return cover 21 covers the lower pipe openings of the intake pipe 19 and the intake pipe 20, the bottom of the oil return cover 21 is provided with an oil return hole 23, and the oil return hole 23 is located on the central axis of the intake pipe 20; the lower pipe wall of the intake pipe 20 and the lower pipe wall of the intake pipe 19 are bent inward and welded to the platform at the open top of the oil return cover 21.

[0045] In this embodiment, a gap is left between the outer walls of the air inlet pipe 19 and the air intake pipe 20 and the inner wall of the cylinder 1 .

[0046] In this embodiment, a desiccant assembly 24 is tied to the outer wall of the air intake pipe 20 at a side away from the air intake pipe 19 by a cable tie.

[0047] In this embodiment, a reinforcing rib is provided on the outer wall of the air intake pipe 20 away from the air intake pipe 19 , and the top end of the reinforcing rib is in conflict with the oil blocking cover 18 .

[0048] Working principle:

[0049] When in use, the incompletely vaporized refrigerant enters from the air inlet 4. Due to the effect of the oil blocking cover 18, the refrigerant will not directly impact the liquid surface of the separator, but will be injected into the container along the wall of the container. The liquid refrigerant sinks to the lower part of the container, and the gaseous refrigerant floats on the upper part of the container. Under the suction effect of the compressor, the gaseous refrigerant flows into the cylinder 1, is dried by the desiccant assembly 24, and finally enters the compressor inlet;

[0050] The mixed solution settled at the bottom of the container is filtered by the filter screen 22 on the filter component, flows through the oil return through hole 23 of appropriate size, and controls the appropriate oil return amount together with the refrigerant from the air intake port 5 to return to the compressor, completing gas-liquid separation and oil return;

[0051] The liquid inlet 7 is connected to the compressor or the condenser, so that the liquid with residual temperature enters the drainage groove 802 through the liquid inlet 7, the liquid guide tube 11, the through hole 13 of the preheating baffle 803 and the inlet end of the drainage groove 802, and performs heat exchange with the upper gas-liquid separation chamber 9, thereby improving the gas-liquid separation effect in the gas-liquid separation chamber 9, avoiding the problem of frost on the outside of the cylinder 1 when the gas-liquid separator is working, accelerating the evaporation of the mixed liquid in the liquid-gas separator and reducing the power consumption of the compressor, thereby achieving the purpose of saving electricity;

[0052] The liquid after heat exchange flows into the liquid storage chamber 10 through another through hole 13 on the preheating baffle 803 for storage, and the excess liquid flows out through the filter cartridge 12 and the liquid storage port.

[0053] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A liquid-gas separation device with both liquid storage and waste heat recovery functions, characterized in that: The invention comprises a cylinder (1), wherein an upper end cover (2) and a lower end cover (3) are respectively arranged at the upper and lower ends of the cylinder (1), an air inlet (4) and an air suction port (5) are arranged on the upper end cover (2), and a liquid outlet (6) and a liquid inlet (7) are arranged on the lower end cover (3); A waste heat recovery component (8) is arranged in the cylinder (1), and the waste heat recovery component (8) divides the cylinder (1) into a gas-liquid separation chamber (9) and a liquid storage chamber (10); The waste heat recovery component (8) comprises a partition (801) integrally formed with the inner wall of the cylinder (1); a drainage groove (802) is provided at one end of the partition (801) close to the liquid storage chamber (10); a preheating baffle (803) is provided on the drainage groove (802); the drainage groove (802) is sealed by the preheating baffle (803), thereby forming a waste heat recovery chamber; A liquid guide tube (11) is provided in the liquid storage cavity (10); one end of the liquid guide tube (11) is connected to the liquid inlet (7), and the other end is connected to the waste heat recovery component (8).

2. A liquid-gas separation device with both liquid storage and waste heat recovery functions according to claim 1, characterized in that: A filter cartridge (12) is also provided in the liquid storage cavity (10), and the filter cartridge (12) is connected to the liquid outlet (6).

3. The liquid-gas separation device with both liquid storage and waste heat recovery functions according to claim 1, characterized in that: The preheating baffle (803) is provided with two through holes (13), one of which is connected to the liquid guiding tube (11), and the through hole (13) is connected to the liquid inlet end of the drainage groove (802).

4. The liquid-gas separation device with both liquid storage and waste heat recovery functions according to claim 3, characterized in that: The other through hole (13) is arranged offset from the liquid outlet (6).

5. The liquid-gas separation device with both liquid storage and waste heat recovery functions according to claim 4, characterized in that: The preheating baffle (803) is connected to the partition (801) via a stainless steel screw (14).

6. The liquid-gas separation device with both liquid storage and waste heat recovery functions according to claim 1, characterized in that: An upper supporting boss (15) and a lower supporting boss (16) are provided at both ends of the liquid guiding tube (11); the upper supporting boss (15) abuts against the preheating baffle (803), and the lower supporting boss (16) abuts against the lower end cover (3).

7. A liquid-gas separation device with both liquid storage and waste heat recovery functions according to claim 6, characterized in that: The upper end cover (2) and the lower end cover (3) are both welded to the cylinder (1).

8. The liquid-gas separation device with both liquid storage and waste heat recovery functions according to claim 1, characterized in that: A temperature sensor (17) is also provided in the liquid storage chamber (10).

9. The liquid-gas separation device with both liquid storage and waste heat recovery functions according to claim 1, characterized in that: An oil blocking cover (18), an air inlet pipe (19) and an air suction pipe (20) are arranged in the gas-liquid separation chamber (9); an upper pipe opening of the air suction pipe (20) passes through the oil blocking cover (18) and is fixedly connected to the air suction port (5); a gap is left between the upper part of the oil blocking cover (18) and the upper end cover (2); and a gap is left between the upper pipe opening of the air inlet pipe (19) and the lower part of the oil blocking cover (18); The lower parts of the air inlet pipe (19) and the air intake pipe (20) are connected to form a gas flow channel.

10. A liquid-gas separation device with both liquid storage and waste heat recovery functions according to claim 9, characterized in that: An oil return cover (21) and a filter screen (22) are sequentially arranged at the lower parts of the air inlet pipe (19) and the air suction pipe (20); an oil return through hole (23) is arranged at the bottom of the oil return cover (21); and the filter screen (22) is connected to the inner bottom of the cylinder (1).

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