Gas-liquid separator and refrigeration unit

Abstract

The present invention provides a gas-liquid separator and a refrigeration unit, the gas-liquid separator comprising: an outer cylinder and an inner cylinder, the inner cylinder being arranged inside the outer cylinder; a first channel being provided between the inner cylinder and the outer cylinder, a second channel being provided in the inner cylinder, an inlet being provided on the outer cylinder, and a gas phase outlet being provided on the inner cylinder; the inlet being connected to the first channel, the gas phase outlet being connected to the second channel, and the first channel and the second channel being connected via a third channel; the first channel being used for the first gas-liquid separation of a gas-liquid two-phase mixed substance, the third channel being used for the second gas-liquid separation of a gas-liquid two-phase mixed substance, and the second channel being used for the third gas-liquid separation of a gas-liquid two-phase mixed substance. The gas-liquid separator of the present invention adopts a triple separation design, comprising spiral flow separation, filtration separation, and gas phase extraction, and can effectively separate the liquid phase component in the mixed substance. The combination of multiple separation technologies improves the efficiency of gas-liquid separation and improves the safety and reliability of the operation of the refrigeration unit.

Description

Technical Field

[0001] The present invention belongs to the technical field of gas-liquid separation equipment, and in particular relates to a gas-liquid separator and a refrigeration unit. Background Art

[0002] The gas-liquid separator separates and stores liquid in the return line to prevent compressor liquid hammer. It temporarily stores excess liquid refrigerant, preventing it from flowing into the compressor crankcase and diluting the oil. During operation, the refrigerant oil is separated and deposited at the bottom of the separator. Perforations in the separator ensure that the refrigerant oil returns to the compressor, preventing oil starvation. Traditional gas-liquid separators rely on gravity, packing, or mesh for single-use gas-liquid separation, resulting in low overall efficiency. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is that the traditional gas-liquid separator has a single separation form and low separation efficiency.

[0004] In order to solve the above problems, the present invention provides a gas-liquid separator, comprising:

[0005] An outer cylinder and an inner cylinder, wherein the inner cylinder is arranged inside the outer cylinder;

[0006] A first channel is provided between the inner cylinder and the outer cylinder, a second channel is provided in the inner cylinder, an inlet is provided on the outer cylinder, and a gas phase outlet is provided on the inner cylinder;

[0007] The inlet is connected to the first channel, the gas phase outlet is connected to the second channel, and the first channel and the second channel are connected through the third channel;

[0008] The first channel is used for the first gas-liquid separation of the gas-liquid two-phase mixture, the third channel is used for the second gas-liquid separation of the gas-liquid two-phase mixture, and the second channel is used for the third gas-liquid separation of the gas-liquid two-phase mixture.

[0009] Preferably, a spiral partition is provided in the first channel, which divides the first channel into a spiral channel. The gas-liquid two-phase mixed material flows in a spiral in the first channel, slows down and cools, and the liquid phase material condenses and deposits, and is separated from the mixed material.

[0010] Preferably, a fan device is provided in the second channel, and the fan device can extract the gaseous material in the second channel and discharge it through the gaseous phase outlet.

[0011] Preferably, the fan device comprises a drive motor, and the drive motor drives the fan device to operate.

[0012] Preferably, a liquid phase filtering device is provided in the third channel, and the liquid phase filtering device can filter out the liquid phase component in the gas-liquid two-phase mixture.

[0013] Preferably, the gas-liquid separator further comprises a liquid storage chamber, which is provided with a liquid phase outlet, and the liquid phase outlet is provided with a switch device. When the oil storage in the liquid storage chamber reaches a preset value, the switch device is opened and the oil is discharged through the liquid phase outlet.

[0014] Preferably, the switching device includes a valve body and a counterweight. The counterweight rotates in the liquid storage chamber. A first connecting member is provided between the counterweight and the valve body. The centrifugal force generated by the rotation of the counterweight can pull the valve body to move, thereby opening the liquid phase outlet.

[0015] Preferably, when the gas-liquid separator includes a fan device, the rotating shaft of the fan device includes a drive shaft extending into the liquid storage chamber, the counterweight is hinged on the drive shaft through a second connecting member, and rotates around the drive shaft. When the centrifugal force of the counterweight increases, the counterweight moves along the direction of the rotating axis, pulling the valve body to move.

[0016] Preferably, the valve body further comprises an elastic member, one end of the elastic member is connected to the valve body, and the other end is connected to the liquid phase outlet. The elastic member can provide a rebound force for the valve body to achieve closing of the liquid phase outlet.

[0017] Preferably, the outer cylinder includes a first end and a second end, the inlet is arranged at the first end, the liquid storage chamber is arranged at the second end, and a perforated partition member is provided between the liquid storage chamber and the outer cylinder, and the perforated partition member is used to flow the separated liquid phase substance into the liquid storage chamber.

[0018] Preferably, when the gas-liquid separator includes a fan device, the fan device is arranged close to the second end, and / or when the third channel includes a liquid phase filter device, the liquid phase filter device is arranged close to the second end.

[0019] Preferably, there are multiple third channels, and the multiple third channels are arranged along the circumference of the inner tube.

[0020] A refrigeration unit adopts the gas-liquid separator.

[0021] The gas-liquid separator and refrigeration unit provided by the present invention have at least the following beneficial effects:

[0022] The gas-liquid separator of the present invention adopts a triple separation design, combining spiral flow separation, filtration separation, and gas phase extraction, which can effectively separate the liquid phase components in the mixed substance. The combination of multiple separation technologies improves the efficiency of gas-liquid separation and improves the safety and reliability of the refrigeration unit operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural cross-sectional view of a gas-liquid separator according to an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the outer cylinder structure of an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the inner cylinder structure of an embodiment of the present invention;

[0026] Figure 4 Schematic diagram of the structure of a fan device and a switch device according to an embodiment of the present invention.

[0027] The reference numerals indicate:

[0028] 1. Outer cylinder; 2. Inner cylinder; 3. First channel; 4. Second channel; 5. Third channel; 6. Spiral partition; 7. Fan device; 8. Drive motor; 9. Liquid phase filtration device; 10. Liquid storage chamber; 11. Liquid phase outlet; 12. Switch device; 13. Valve body; 14. Counterweight; 15. First connecting member; 16. Drive shaft; 17. Second connecting member; 18. Elastic member; 19. First end; 20. Second end; 21. Inlet; 22. Gas phase outlet; 23. Perforated partition member. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Combine Figure 1-4 As shown, an embodiment of the present invention provides a gas-liquid separator, comprising: an outer cylinder 1 and an inner cylinder 2, the inner cylinder 2 being arranged inside the outer cylinder 1; a first channel 3 is provided between the inner cylinder 2 and the outer cylinder 1, a second channel 4 is provided in the inner cylinder 2, an inlet 21 is provided on the outer cylinder 1, and a gas phase outlet 22 is provided on the inner cylinder 2; the inlet 21 is connected to the first channel 3, the gas phase outlet 22 is connected to the second channel 4, and the first channel 3 and the second channel 4 are connected through a third channel 5; the first channel 3 is used for the first gas-liquid separation of a gas-liquid two-phase mixture, the third channel 5 is used for the second gas-liquid separation of a gas-liquid two-phase mixture, and the second channel 4 is used for the third gas-liquid separation of a gas-liquid two-phase mixture.

[0031] The gas-liquid separator of the present invention adopts a triple separation design and can use a combination of multiple separation technologies to improve the efficiency of gas-liquid separation and improve the safety and reliability of the refrigeration unit operation. The gas-liquid separator of this embodiment can adopt separation methods including spiral flow separation, filtration separation, gas phase extraction, etc., which can effectively separate the liquid phase components in the mixed substance.

[0032] Preferably, the first separation adopts spiral flow channel separation technology. A spiral partition 6 is provided in the first channel 3. The spiral partition 6 divides the first channel 3 into a spiral channel. The gas-liquid two-phase mixture enters from the inlet 21 and flows spirally in the first channel 3. During this process, the mixed material is fully decelerated and cooled, and a large part of the liquid phase material condenses, separates and settles, flows downward along the inner wall of the spiral channel, and finally gathers in the liquid storage chamber 10 to achieve the first separation.

[0033] Preferably, the second separation adopts filtration separation technology, and a liquid phase filter device 9 is provided in the third channel 5. The liquid phase filter device 9 can filter out the liquid phase component in the gas-liquid two-phase mixture to achieve the second separation.

[0034] Preferably, the third separation adopts gas phase extraction technology. A fan device 7 is provided in the second channel 4. The fan device 7 can extract the gas phase material in the second channel 4 and discharge it through the gas phase outlet 22. After the two gas-liquid separations, the mixed material enters the inner cylinder 2, where the gas phase component is relatively large. The rotating fan device 7 extracts the gas phase material and pushes it out of the gas-liquid separator.

[0035] Preferably, the fan device 7 in this embodiment includes a drive motor 8, which drives the fan device 7 to operate. The fan device 7 is self-driven and is not driven by airflow, thereby ensuring the stability of the airflow inside the gas-liquid separator and improving the flow separation efficiency.

[0036] Preferably, the gas-liquid separator of this embodiment further includes a liquid storage chamber 10. The liquid phase substances separated in the first channel 3, the second channel 4, and the third channel 5 are all collected and stored in the liquid storage chamber 10. The liquid storage chamber 10 is provided with a liquid phase outlet 11. The liquid phase outlet 11 is provided with a switch device 12. When the oil storage volume in the liquid storage chamber 10 reaches a preset value, the switch device 12 is opened, and the oil is discharged through the liquid phase outlet 11. The liquid storage chamber 10 of this embodiment adopts a controllable opening method. When the liquid phase substances in the liquid storage chamber 10 are collected to a preset level, the switch device 12 is actuated to discharge the liquid, and the oil is quantitatively returned. This can avoid the situation where the oil cannot be returned by pressure due to insufficient oil volume, and the optimal effect of oil recycling cannot be achieved.

[0037] Preferably, in order to enable the liquid phase outlet 11 to be opened in time according to the oil storage amount in the liquid storage chamber 10, the switching device 12 includes a valve body 13 and a counterweight 14. The counterweight 14 rotates in the liquid storage chamber 10. A first connecting member 15 is provided between the counterweight 14 and the valve body 13. The centrifugal force generated by the rotation of the counterweight 14 can pull the valve body 13 to move, thereby realizing the opening of the liquid phase outlet 11.

[0038] Furthermore, when the gas-liquid separator includes a fan device 7, the rotating shaft of the fan device 7 includes a drive shaft 16 extending into the liquid storage chamber 10. The counterweight 14 is hingedly connected to the drive shaft 16 via a second connecting member 17 and rotates about the drive shaft 16, thereby generating centrifugal force. As the liquid phase in the liquid storage chamber 10 increases, the counterweight 14 is attached to the oil, and its mass also increases accordingly. As a result, the centrifugal force generated by the rotation of the counterweight 14 increases, and the counterweight 14 tends to move away from the rotation axis and move along the rotation axis, thereby pulling the valve body 13 to move.

[0039] In this embodiment, the first connector 15 can be directly connected to the counterweight 14 or to the second connector 17. Furthermore, the first connector 15 is an elastic member, while the second connector 17 is a rigid connector. In the initial position, the angle between the second connector 17 and the rotation axis is less than 90 degrees. When the centrifugal force on the counterweight 14 increases and displacement occurs, it moves about the hinge point, pulled by the first connector 17, until it becomes perpendicular to the rotation axis, that is, the angle between the second connector 17 and the rotation axis reaches 90 degrees.

[0040] Preferably, after the drainage is completed, the liquid phase outlet 11 needs to be closed again. The valve body 13 of this embodiment also includes an elastic member 18, one end of the elastic member 18 is connected to the valve body 13, and the other end is connected to the liquid phase outlet 11. The elastic member 18 can provide a rebound force for the valve body 13 to achieve the closure of the liquid phase outlet 11.

[0041] Preferably, in this embodiment, the outer cylinder 1 includes a first end 19 and a second end 20, the inlet 21 is arranged at the first end 19, and the liquid storage chamber 10 is arranged at the second end 20. The first channel 3 using spiral separation is longer, and a perforated partition member 23 is provided between the liquid storage chamber 10 and the outer cylinder. The perforated partition member 23 is used to allow the separated liquid phase material to flow into the liquid storage chamber 10. At the same time, the perforated partition member 23 can also serve to install and fix the inner cylinder 2.

[0042] Preferably, when the gas-liquid separator includes a fan device 7 , the fan device 7 is disposed close to the second end 20 , and / or when the third channel 5 includes a liquid phase filter device 9 , the liquid phase filter device 9 is disposed close to the second end 20 .

[0043] Preferably, there are multiple third channels 5, and the multiple third channels 5 are arranged along the circumference of the inner tube, which uniformly transmits gas in the circumference, increases the gas flow area, reduces the internal pressure, and ensures that the mixed material passes through the liquid phase filtering device 9 at a low speed to achieve the best filtering effect.

[0044] In another embodiment, the switch device 12 includes a valve body 13 and a float 14, connected by a first connector 15. When the oil reaches a preset level, the float 14 pulls the valve body 13 to open the liquid outlet 11. Compared to the previous embodiment, the switch device 12 utilizes the oil level and buoyancy to open and close the liquid outlet 11, resulting in a simpler structure and higher reliability. The float 14 can be made of a lightweight material such as foam.

[0045] The gas-liquid separator of this embodiment adopts a triple separation design, combining spiral flow separation, filtration separation, and gas phase extraction, which can effectively separate the liquid phase components in the mixed substance. The combination of multiple separation technologies improves the efficiency of gas-liquid separation and improves the safety and reliability of the refrigeration unit operation.

[0046] A refrigeration unit adopts the gas-liquid separator.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art may make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A gas-liquid separator, characterized in that: include: An outer cylinder (1) and an inner cylinder (2), wherein the inner cylinder (2) is arranged inside the outer cylinder (1); A first channel (3) is provided between the inner cylinder (2) and the outer cylinder (1), a second channel (4) is provided in the inner cylinder (2), an inlet (21) is provided on the outer cylinder (1), and a gas phase outlet (22) is provided on the inner cylinder (2); The inlet (21) is in communication with the first channel (3), the gas phase outlet (22) is in communication with the second channel (4), and the first channel (3) and the second channel (4) are in communication through a third channel (5); The first channel (3) is used for the first gas-liquid separation of the gas-liquid two-phase mixture, the third channel (5) is used for the second gas-liquid separation of the gas-liquid two-phase mixture, and the second channel (4) is used for the third gas-liquid separation of the gas-liquid two-phase mixture; The gas-liquid separator further comprises a liquid storage chamber (10), the liquid storage chamber (10) being provided with a liquid phase outlet (11), the liquid phase outlet (11) being provided with a switch device (12), and when the oil storage in the liquid storage chamber (10) reaches a preset value, the switch device (12) is opened; the second gas-liquid separation adopts filtration separation, and the third gas-liquid separation adopts gas phase extraction, the oil and liquid are collected in the liquid storage chamber (10), the oil and liquid are discharged through the liquid phase outlet (11), and the gas is pushed out through the gas phase outlet (22); The switch device (12) comprises a valve body (13) and a counterweight (14); the counterweight (14) rotates in the liquid storage chamber (10); a first connecting member (15) is provided between the counterweight (14) and the valve body (13); the centrifugal force generated by the rotation of the counterweight (14) can pull the valve body (13) to move, thereby realizing the opening of the liquid phase outlet (11); When the gas-liquid separator includes a fan device (7), the rotating shaft of the fan device (7) includes a drive shaft (16) extending into the liquid storage chamber (10), and the counterweight (14) is hinged to the drive shaft (16) through a second connecting member (17) and rotates around the drive shaft (16). When the liquid phase material in the liquid storage chamber (10) increases, the counterweight (14) is attached to the oil, and when the centrifugal force of the rotation of the counterweight (14) increases, the counterweight (14) moves along the rotation axis direction, pulling the valve body (13) to move.

2. The gas-liquid separator according to claim 1, characterized in that A spiral partition (6) is provided in the first channel (3), and the spiral partition (6) divides the first channel (3) into a spiral channel. The gas-liquid two-phase mixed material flows spirally in the first channel (3), slows down and cools, and the liquid phase material condenses and deposits, and is separated from the mixed material.

3. The gas-liquid separator according to claim 1, characterized in that A fan device (7) is provided in the second channel (4), and the fan device (7) is capable of extracting the gaseous material in the second channel (4) and discharging it through the gaseous phase outlet (22).

4. The gas-liquid separator according to claim 3, characterized in that The fan device (7) comprises a driving motor (8), and the driving motor (8) drives the fan device (7) to operate.

5. The gas-liquid separator according to claim 1, characterized in that A liquid phase filtering device (9) is provided in the third channel (5), and the liquid phase filtering device (9) is capable of filtering out liquid phase components in a gas-liquid two-phase mixture.

6. The gas-liquid separator according to claim 1, characterized in that The valve body (13) further comprises an elastic member (18), one end of the elastic member (18) being connected to the valve body (13) and the other end being connected to the liquid phase outlet (11). The elastic member (18) can provide a rebound force for the valve body (13) to achieve closure of the liquid phase outlet (11).

7. The gas-liquid separator according to claim 1, characterized in that The outer cylinder comprises a first end (19) and a second end (20), the inlet (21) is arranged at the first end (19), the liquid storage chamber (10) is arranged at the second end (20), and a perforated partition member (23) is provided between the liquid storage chamber (10) and the outer cylinder, and the perforated partition member (23) is used to allow the separated liquid phase substance to flow into the liquid storage chamber (10).

8. The gas-liquid separator according to claim 7, characterized in that When the gas-liquid separator includes a fan device (7), the fan device (7) is arranged close to the second end (20), and / or when the third channel (5) includes a liquid phase filter device (9), the liquid phase filter device (9) is arranged close to the second end (20).

9. The gas-liquid separator according to claim 1, characterized in that There are multiple third channels (5), and the multiple third channels (5) are arranged along the circumference of the inner tube.

10. A refrigeration unit, characterized in that: A gas-liquid separator according to any one of claims 1 to 9 is used.

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