Gas-liquid separator with misconnection prevention function

Abstract

The utility model discloses a gas-liquid separator with an anti-misconnection function, which belongs to the field of refrigeration equipment and comprises a gas-liquid separation cylinder, a gas inlet pipe and a gas suction pipe, the gas inlet pipe and the gas suction pipe are arranged in the gas-liquid separation cylinder, and the top of the gas-liquid separation cylinder is provided with a gas inlet and a gas suction port which are respectively communicated with the gas inlet pipe and the gas suction pipe. The air inlet pipe and the air suction pipe are the same in structure and are integrally in a U shape, one connector at the upper end of the air inlet pipe and one connector at the upper end of the air suction pipe are communicated with the air inlet and the air suction port respectively, and the other connector faces the side walls, in different directions, of the air-liquid separation barrel by arranging an elbow, and the bottom bending positions of the air inlet pipe and the air suction pipe are close to the bottom of the air-liquid separation barrel. And an oil inlet is arranged at the position. The air inlet pipe and the air suction pipe which are the same in shape and structure are adopted, and the oil inlets are formed in the bottoms of the air inlet pipe and the air suction pipe, so that no matter how an external pipeline is in butt joint with the gas-liquid separator, it can be ensured that compressor oil enters the compressor, meanwhile, the universality of parts is enhanced, and the production efficiency and the assembly efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the field of refrigeration equipment, in particular to a gas-liquid separator with an anti-wrong connection function. Background Art

[0002] Gas-liquid separators are widely used in refrigeration systems. They are installed between the compressor suction port and the evaporator. Their main function is to separate the liquid droplets in the airflow from the evaporator to the compressor to prevent liquid hammer in the compressor. The main principle is to use the different specific gravity of gas and liquid. In a suddenly expanded container, after the flow rate is reduced, in the process of the main fluid turning, the fine droplets in the gas phase sink and separate from the gas. The fine droplets in the gas phase are thrown onto the wall of the container by the inlet high-speed airflow, lose kinetic energy after collision and separate from the turning gas.

[0003] The structure of common gas-liquid separators is as follows: Figure 1 As shown, it is mainly composed of a gas-liquid separation cylinder 1, an air inlet pipe 2 and an air suction pipe 3. Among them, the air inlet pipe 2 is the pipeline for the refrigerant to enter the gas-liquid separator, which is a small section of a bent structure, and the air suction pipe 3 is the air suction pipeline connecting the gas-liquid separator to the compressor, and the overall structure is a U-shaped structure. The refrigerant enters the gas-liquid separator through the air inlet pipe 2, and then flows out of the gas-liquid separator through the air suction pipe 3 and enters the air suction port of the compressor. An oil return hole 4 is provided at the bottom of the air suction pipe 3, which can return the mixed liquid of the refrigerant and oil accumulated at the bottom of the gas-liquid separator to the compressor along with the compressor suction air flow. In actual use, the separated refrigerant liquid and the compressor lubricating oil brought back by the circulation of the refrigeration system will be deposited at the bottom of the gas-liquid separator. Due to the different densities of the refrigerant and the lubricating oil, the lubricating oil is generally deposited at the bottom, and the liquid refrigerant is deposited above the oil surface. Therefore, there is more oil return.

[0004] However, in the actual production of air-conditioning units, since it is difficult to distinguish the inlet pipe and the suction pipe from the appearance of the gas-liquid separator, it is easy to cause the connection to be reversed in the refrigeration system, that is, the inlet pipe is connected to the compressor suction port, and the refrigerant liquid enters the gas-liquid separator from the suction pipe. This will cause the refrigerant returning to the compressor to not carry the compressor oil, and after running for a period of time, there is a risk of the compressor lacking oil, wearing out, or even burning the coil.

[0005] There are currently two common solutions to the above problems:

[0006] The first method is to stamp "IN" on the air inlet of the gas-liquid separator to distinguish it. However, in actual production and processing, there is still a risk of wrong connection because the stamp is not obvious or the workers are not familiar with the structural principles.

[0007] The second method is to make the lengths of the intake pipe and the suction pipe different for differentiation. Similarly, there is still a risk of misconnection due to human error or misunderstanding. Utility Model Content

[0008] In order to overcome the disadvantages of the existing gas-liquid separators, such as the risk of misconnection, the technical problem to be solved by the utility model is to provide a gas-liquid separator with an anti-misconnection function that can ensure accurate pipeline connection.

[0009] The technical solution adopted by the utility model to solve its technical problems is:

[0010] An air-liquid separator with an anti-misconnection function comprises an air-liquid separation cylinder and an air inlet pipe and an air suction pipe arranged in the air-liquid separation cylinder. An air inlet port and an air suction port respectively connected to the air inlet pipe and the air suction pipe are provided on the top of the air-liquid separation cylinder. The air inlet pipe and the air suction pipe have the same structure and are U-shaped as a whole. One of the interfaces at the upper ends of the two is respectively connected to the air inlet port and the air suction port, and the other interface is facing the side wall of the air-liquid separation cylinder in different directions through an elbow. The bottom bending parts of the air inlet pipe and the air suction pipe are close to the bottom of the air-liquid separation cylinder, and an oil inlet is provided thereat.

[0011] Furthermore, the elbows on the air inlet pipe and the air intake pipe are 90° elbows, and are respectively oriented in two opposite directions.

[0012] Furthermore, the elbows on the air inlet pipe and the air suction pipe are close to the inner wall and the top of the gas-liquid separation cylinder.

[0013] Furthermore, the air inlet pipe and the air intake pipe are integrally formed with the corresponding air inlet port and the air intake port.

[0014] Furthermore, the air inlet pipe and the air suction pipe are provided with a pressure equalizing hole on the pipe wall at one end connected to the air inlet and the air suction port, and the pressure equalizing hole is located in the gas-liquid separation cylinder.

[0015] Furthermore, the air inlet pipe and the air suction pipe are arranged rotationally symmetrically around the axis of the gas-liquid separation cylinder.

[0016] The beneficial effects of the utility model are as follows: by redesigning the internal structure of the gas-liquid separator, adopting the same shape of air inlet pipe and air suction pipe, and arranging oil inlet ports at the bottom of both, no matter how the external pipeline is connected to the gas-liquid separator, it can ensure that the compressor oil enters the compressor, avoiding the risk of oil return and improving the reliability of the refrigeration system; in addition, compared with the traditional structure, the air inlet pipe and the air suction pipe are designed with the same size and shape, which enhances the versatility of parts, and reduces the production process of processing steel stamps in the process of manufacturing the gas-liquid separator, thereby improving production efficiency. When assembling the air-conditioning unit on the general assembly line, it is no longer necessary to distinguish the direction of the gas-liquid separator, thereby improving the production efficiency of the general assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an existing gas-liquid separator;

[0018] Figure 2 It is a structural schematic diagram of the utility model;

[0019] Figure 3 yes Figure 2 A top view of

[0020] Figure 4 It is a structural schematic diagram of the air intake pipe of the utility model.

[0021] Marked in the figure are, 1-gas-liquid separation cylinder, 2-inlet pipe, 3-suction pipe, 4-inlet port, 5-suction port, 6-elbow, 7-oil inlet port, 8-pressure equalizing hole. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings.

[0023] It should be noted that if there are directional indication terms in the present invention, such as up, down, left, right, front, and back directions and orientation terms, they are for the purpose of facilitating the description of the relative position relationship between components, and are not for the absolute position of the related components or the position relationship between components. They are only used to explain the relative position relationship and movement of the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly. If there are terms related to quantity in the present invention, such as "multiple", "multiple", "several", etc., they specifically refer to two or more.

[0024] like Figure 2-4 As shown, the utility model provides a gas-liquid separator with an anti-misconnection function, comprising a gas-liquid separation cylinder 1 and an air inlet pipe 2 and an air suction pipe 3 arranged in the gas-liquid separation cylinder 1. The top of the gas-liquid separation cylinder 1 is provided with an air inlet 4 and an air suction port 5 respectively connected to the air inlet pipe 2 and the air suction pipe 3. The air inlet pipe 2 and the air suction pipe 3 have the same structure and are U-shaped as a whole. One of the interfaces at the upper ends of the two is respectively connected to the air inlet 4 and the air suction port 5, and the other interface is facing the side wall of the gas-liquid separation cylinder 1 in different directions through an elbow 6. The bottom bending parts of the air inlet pipe 2 and the air suction pipe 3 are close to the bottom of the gas-liquid separation cylinder 1, and an oil inlet 7 is provided thereat.

[0025] The distance from the bottom bend of the air inlet pipe 2 and the air suction pipe 3 to the bottom of the gas-liquid separation cylinder 1 is designed according to the existing air suction pipe 3 to ensure that the compressor oil at the bottom of the gas-liquid separation cylinder 1 can enter the air inlet pipe 2 and the air suction pipe 3 through the oil inlet 7. The air inlet pipe 2 and the air suction pipe 3 can be independently docked and assembled with the corresponding air inlet port 4 and the air suction port 5, or they can be integrally formed. Specifically, a through hole for the air inlet pipe 2 and the air suction pipe 3 to pass through can be first set at the top of the gas-liquid separation cylinder 1. After the positions of the air inlet pipe 2 and the air suction pipe 3 are determined, they can be sealed and welded to the top of the gas-liquid separation cylinder 1. Figure 1Compared with the existing gas-liquid separator shown in the figure, the utility model sets the air inlet pipe 2 and the air suction pipe 3 into the same U-shaped structure, and sets an oil inlet 7 at the bottom of both. In this way, no matter how the external pipeline is connected to the gas-liquid separation cylinder 1, it can ensure that the compressor oil enters the compressor, thereby improving the reliability of the refrigeration system.

[0026] For the design of the elbow 6, a 90° elbow is preferred, and the elbows are oriented in two opposite directions, so that the gas-liquid mixture entering from the outside can vertically hit the inner wall of the gas-liquid separation cylinder 1, thereby improving the gas-liquid separation effect. The elbow 6 can be provided by directly bending the pipeline, or an independent elbow structure can be installed on the pipeline.

[0027] Furthermore, the elbows 6 on the air inlet pipe 2 and the air intake pipe 3 are close to the inner wall and the top of the gas-liquid separation cylinder 1. The elbow 6 is close to the inner wall so that the fine droplets in the gas-liquid mixture can fully impact on the gas-liquid separation cylinder 1. The elbow 6 is also close to the top of the gas-liquid separation cylinder 1, which can make the droplets settle repeatedly and the gas fully rise, thereby further improving the gas-liquid separation effect. As for how close the elbow 6 is to the inner wall and the top of the gas-liquid separation cylinder 1, it can be determined according to the air intake pipe 3 in the existing gas-liquid separator, and the distance is appropriate to meet the gas-liquid separation effect.

[0028] In order to stabilize the airflow entering the compressor, a pressure equalizing hole 8 is provided on the pipe wall of the inlet pipe 2 and the suction pipe 3 at one end connected to the inlet port 4 and the suction port 5, and the pressure equalizing hole 8 is located in the gas-liquid separation cylinder 1. Because it is uncertain which of the inlet port 4 and the suction port 5 is connected to the compressor, it is necessary to provide a pressure equalizing hole 8 on both the inlet pipe 2 and the suction pipe 3.

[0029] In order to achieve the same effect during the assembly of the gas-liquid separation cylinder 1 regardless of which of the air inlet 4 and the air suction port 5 is connected to the compressor, it is best to arrange the air inlet pipe 2 and the air suction pipe 3 rotationally symmetrically around the axis of the gas-liquid separation cylinder 1.

[0030] The utility model redesigns the internal structure of the gas-liquid separator, adopts the same shape of intake pipe 2 and suction pipe 3, and sets oil inlet 7 at the bottom of both, so that no matter how the external pipeline is connected to the gas-liquid separator, it can ensure that the compressor oil enters the compressor, avoids the risk of oil return, and improves the reliability of the refrigeration system; in addition, compared with the traditional structure, the intake pipe 2 and the suction pipe 3 are designed with the same size and shape, which enhances the versatility of parts, and reduces the production process of processing steel stamps in the process of manufacturing the gas-liquid separator, thereby improving production efficiency. When assembling the air-conditioning unit on the general assembly line, there is no need to distinguish the direction of the gas-liquid separator, which improves the production efficiency of the general assembly, and has good practicality and application value.

Claims

1. A gas-liquid separator with an anti-misconnection function, comprising a gas-liquid separation cylinder (1) and an air inlet pipe (2) and an air suction pipe (3) arranged in the gas-liquid separation cylinder (1), wherein the top of the gas-liquid separation cylinder (1) is provided with an air inlet (4) and an air suction port (5) respectively connected to the air inlet pipe (2) and the air suction pipe (3), wherein: The air inlet pipe (2) and the air suction pipe (3) have the same structure and are U-shaped as a whole. One of the interfaces at the upper ends of the two is respectively connected to the air inlet (4) and the air suction port (5), and the other interface is arranged to face the side wall of the gas-liquid separation cylinder (1) in different directions through an elbow (6). The bottom bending parts of the air inlet pipe (2) and the air suction pipe (3) are close to the bottom of the gas-liquid separation cylinder (1), and an oil inlet (7) is arranged at this location.

2. The gas-liquid separator with anti-wrong connection function as claimed in claim 1, characterized in that: The elbows (6) on the air inlet pipe (2) and the air suction pipe (3) are 90° elbows, and are oriented in two opposite directions respectively.

3. The gas-liquid separator with anti-wrong connection function according to claim 1, characterized in that: The elbows (6) on the air inlet pipe (2) and the air suction pipe (3) are both close to the inner wall and the top of the gas-liquid separation cylinder (1).

4. The gas-liquid separator with anti-wrong connection function according to claim 1, characterized in that: The air inlet pipe (2) and the air suction pipe (3) are integrally formed with the corresponding air inlet port (4) and the air suction port (5).

5. The gas-liquid separator with anti-wrong connection function according to claim 1, characterized in that: The air inlet pipe (2) and the air suction pipe (3) are provided with a pressure equalizing hole (8) on the pipe wall at one end connected to the air inlet port (4) and the air suction port (5), and the pressure equalizing hole (8) is located in the gas-liquid separation cylinder (1).

6. The gas-liquid separator with anti-wrong connection function according to any one of claims 1 to 5, characterized in that: The air inlet pipe (2) and the air suction pipe (3) are arranged rotationally symmetrically around the axis of the gas-liquid separation cylinder (1).

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