Cooling structure of refrigeration compressor

Abstract

The utility model relates to the technical field of refrigeration compressors, and discloses a refrigeration compressor cooling structure which comprises a backflow cooling pipe, a first pipe end and a second pipe end at the top of the backflow cooling pipe are connected to the two sides of an air cylinder cover respectively, and high-temperature and high-pressure refrigerant gas exhausted by a compressor air cylinder seat flows into the backflow cooling pipe through the first pipe end. The gas flows out of the cylinder from the second pipe end; and a part of pipe body of the backflow cooling pipe extends into a lubricating oil storage pool at the bottom of the inner cavity of the compressor and is immersed in an oil body. The backflow cooling pipe is welded on the cylinder cover of the refrigeration compressor, the backflow cooling pipe is partially immersed in the oil body in the lubricating oil storage pool on the lower side of the compressor, high-temperature and high-pressure refrigerants discharged by the cylinder seat of the compressor can reduce the temperature of the refrigerants through the backflow cooling pipe, and therefore the temperature of the cylinder head of the compressor is reduced. The working temperature of the compressor is not too high, and the reliability of the compressor is improved.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration compressor technology, and more specifically, to a cooling structure for a refrigeration compressor. Background Technology

[0002] A refrigeration compressor is a mechanical device used to compress and transport gaseous refrigerant. It is the core and heart of a refrigeration system. The working process of a conventional refrigeration compressor is as follows: it draws in gaseous, low-temperature, low-pressure refrigerant, and through the compression process of the compressor, it finally discharges high-temperature, high-pressure refrigerant.

[0003] During the entire operation of the compressor, the temperature of the compressor cylinder head (the overall functional unit at the top of the cylinder, usually referring to the combined structure of the cylinder head and cylinder block, including the valve installation area and sealing components) will be particularly high. This will cause the reliability and lifespan of the internal parts of the compressor to be greatly affected when they are running at high temperatures.

[0004] Therefore, improving the heat dissipation effect of the refrigeration compressor is the key to improving compressor performance. Utility Model Content

[0005] In view of this, the present invention proposes a cooling structure for a refrigeration compressor, the specific technical solution of which is as follows:

[0006] A cooling structure for a refrigeration compressor includes a reflux cooling pipe. A first end and a second end of the top of the reflux cooling pipe are respectively connected to both sides of the cylinder head. High-temperature and high-pressure refrigerant gas discharged from the compressor cylinder seat flows into the reflux cooling pipe through the first end and then flows out of the cylinder through the second end. A portion of the reflux cooling pipe extends into a lubricating oil storage pool at the bottom of the compressor cavity and is immersed in the oil.

[0007] Preferably, the portion of the reflux cooling pipe immersed in the oil is U-shaped.

[0008] Preferably, the first pipe end and the second pipe end are welded and fixed to both sides of the cylinder head and connected.

[0009] Compared with the prior art, this utility model has the following advantages:

[0010] This invention involves welding a reflux cooling pipe onto the cylinder head of a refrigeration compressor. This reflux cooling pipe is partially immersed in the oil in the lubricating oil storage pool at the bottom of the compressor. The high-temperature and high-pressure refrigerant discharged from the compressor cylinder seat can have its temperature reduced by passing through this reflux cooling pipe, thereby reducing the temperature of the compressor cylinder head and preventing the compressor from operating at excessively high temperatures, thus improving the reliability of the compressor.

[0011] Especially when the compressor is in a high-temperature environment or working under high load, this cooling structure of the present invention can play a more obvious advantage. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of the refrigeration cooling pipe in the cooling structure of the refrigeration compressor of this utility model.

[0014] Figure 2 This diagram illustrates the installation of the return cooling pipe within the compressor in the cooling structure of the refrigeration compressor of this utility model. Figure I .

[0015] Figure 3 This diagram illustrates the installation of the return cooling pipe within the compressor in the cooling structure of the refrigeration compressor of this utility model. Figure II .

[0016] In the diagram: 1-Return cooling pipe, 2-First pipe end, 3-Second pipe end, 4-Cylinder head, 5-Lubricating oil storage tank. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] Example:

[0021] See Figures 1-3 This embodiment provides a cooling structure for a refrigeration compressor, including a reflux cooling pipe 1, with the first pipe end 2 and the second pipe end 3 at the top of the reflux cooling pipe 1 respectively connected to both sides of the cylinder head 4.

[0022] Specifically, to ensure the airtightness of the connection, the first pipe end 2 and the second pipe end 3 are welded and fixed to both sides of the cylinder head 4 and connected.

[0023] In the prior art, the cylinder head 4, the body, and the exhaust valve together constitute the exhaust chamber of the compressor. This chamber is the necessary passage for the high-temperature and high-pressure refrigerant gas to exit the cylinder. Therefore, in this embodiment, the high-temperature and high-pressure refrigerant gas discharged from the compressor cylinder seat flows into the return cooling pipe 1 through the first pipe end 2 connected to the cylinder head 4, and then flows out of the cylinder through the second pipe end 3 on the cylinder head 4. At the same time, part of the return cooling pipe 1 extends into the lubricating oil storage pool 5 at the bottom of the compressor cavity and is immersed in the oil.

[0024] In conventional compressors, lubricating oil is required. This lubricating oil is located at the bottom of the compressor housing. The internal structure of the compressor uses an oil pump to transport the oil from bottom to top to the moving parts, forming an oil film for lubrication. Simultaneously, the oil also cools the compressor pump body. Excess oil falls to the bottom of the housing, completing the oil circulation. In this embodiment, by immersing a section of the return cooling pipe 1 in lubricating oil, the high-temperature, high-pressure refrigerant gas inside the return cooling pipe 1 can be cooled through the oil cooling effect of the lubricating oil.

[0025] In a further specific embodiment, the portion of the reflux cooling pipe 1 immersed in the oil body is U-shaped, which can extend the cooling path of the high-temperature and high-pressure refrigerant gas as much as possible.

[0026] In this embodiment, the reflux cooling pipe 1 is a U-shaped pipe with a bent lower part. The U-shaped part of the reflux cooling pipe is completely immersed in the oil body for oil cooling. The two vertical pipes on the upper side of the reflux cooling pipe extend upward and are connected to the cylinder head 4 on both sides through corresponding bends.

[0027] This invention involves welding a reflux cooling pipe onto the compressor cylinder head. This reflux cooling pipe is partially immersed in the oil at the bottom of the compressor housing, which can reduce the refrigerant temperature and thus directly reduce the compressor cylinder head temperature. This prevents the compressor from operating at excessively high temperatures and improves the compressor's reliability. This cooling structure is particularly advantageous when the compressor is operating in a high-temperature environment or under high load.

[0028] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cooling structure for a refrigeration compressor, characterized by, The application relates to a compressor with a backflow cooling pipe, wherein the first pipe end and the second pipe end of the backflow cooling pipe at the top are respectively connected to the two sides of the cylinder cover, high-temperature and high-pressure refrigerant gas discharged from the compressor cylinder seat flows into the backflow cooling pipe through the first pipe end, and then flows out of the cylinder through the second pipe end; and part of the pipe body of the backflow cooling pipe extends into the lubricating oil storage pool at the bottom of the inner cavity of the compressor and is immersed in the oil body.

2. A cooling structure for a refrigeration compressor according to claim 1, characterized in that, The pipe body part of the backflow cooling pipe immersed in the oil body is in a U shape.

3. The cooling structure of claim 1, wherein, The first pipe end and the second pipe end are respectively welded and fixed to the two sides of the cylinder cover and are connected in communication.

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