Compressor and refrigerating system

Abstract

The utility model provides a compressor and a refrigerating system, the provided compressor comprises a front cover assembly, a rear cover and a cylinder body provided with an air inlet, and the cylinder body is sealed between the front cover assembly and the rear cover in the axial direction; a compression cavity is further formed in the cylinder body and communicates with the air inlet through a plurality of flow guide channels. And a part of the flow guide channel is formed by outwards concaving the inner wall of the cylinder body lower than the air inlet. The flow guide channel additionally arranged on the compressor is formed by outwards concaving the inner wall, lower than the air inlet, of the cylinder body, so that the flow guide channel is matched with a flow guide channel conventionally arranged between the movable disc and the driving shaft of the motor or a flow guide channel additionally arranged between the side walls of the motor, sufficient gas is guided into the compressor for compression, and the compressor can operate efficiently to ensure the refrigeration performance of a refrigeration system.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors, and in particular relates to a compressor and a refrigeration system. Background Art

[0002] A compressor is a fluid device that converts low-pressure gas into high-pressure gas. It is a key component of a refrigeration system. Its compression medium can be gases such as Freon and carbon dioxide.

[0003] For example, if the compressor uses carbon dioxide as a refrigerant, compared with the compressor using ordinary refrigerants, it has the advantages of higher working pressure, greater pressure difference, smaller pressure ratio, smaller volume, etc. When carbon dioxide is used as a refrigerant, the pressure difference between the discharge pressure and the suction pressure of the compressor is about 7-10 times higher than the pressure difference when Freon is used as a refrigerant for the refrigeration cycle. Therefore, when the compressor displacement is fixed, it is necessary to consider how to set the corresponding diversion channel, and it is also necessary to ensure that enough gas is diverted to the compression chamber set in the compressor cylinder body for compression to achieve a high pressure difference, so that the compressor can operate efficiently and ensure the refrigeration performance of the refrigeration system. This is still a problem worth exploring. Utility Model Content

[0004] In view of the above-mentioned problems existing in the prior art, the main purpose of the utility model is to provide a compressor and a refrigeration system, in which the guide channel added in the compressor is formed by a concave inner wall of the cylinder body below the air inlet, so as to cooperate with the conventional guide channel arranged between the moving plate and the driving shaft of the motor, or the guide channel added between the side walls of the motor, so that the gas can be sufficiently sucked in and compressed, and the compressor can operate efficiently to ensure the refrigeration performance of the refrigeration system.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] The utility model provides a compressor, whose compression medium is gas, comprising a front cover assembly, a rear cover and a cylinder body provided with an air inlet, wherein the cylinder body is axially sealed between the front cover assembly and the rear cover;

[0007] A compression chamber is also provided in the cylinder body, and the compression chamber is connected with the air inlet through a plurality of guide channels; some of the guide channels are formed by the outer concave of the inner wall of the cylinder body which is lower than the air inlet.

[0008] As a further description of the above technical solution, a plurality of reinforcing protrusions are further provided on the outer wall of the main body of the cylinder body, and the guide channels formed by the outer concave inner wall of the cylinder body correspond one-to-one to the reinforcing protrusions.

[0009] As a further description of the above technical solution, a plurality of guide channels formed by the outward concave inner wall of the cylinder body are arranged at equal intervals along the circumferential direction on the inner wall portion of the cylinder body lower than the air inlet.

[0010] As a further description of the above technical solution, the guide channel and the reinforcement protrusion are both integrally formed with the cylinder body.

[0011] As a further description of the above technical solution, the distance between the inner wall of the cylinder body and the outer wall of its main body is 8mm-10mm.

[0012] As a further description of the above technical solution, the top corners of each of the guide channels at one end facing the front cover assembly are rounded.

[0013] The utility model also provides a refrigeration system, comprising the compressor as described above.

[0014] The outstanding effects of the utility model are:

[0015] The compressor provided by the utility model comprises a front cover assembly, a rear cover and a cylinder body provided with an air inlet, and the cylinder body is axially sealed between the front cover assembly and the rear cover; a compression chamber is also provided in the cylinder body, and the compression chamber is connected with the air inlet through a plurality of guide channels; part of the guide channels are formed by the inner wall of the cylinder body below the air inlet being concave, and are different from the conventional guide channels which are only formed between the moving disk and the driving shaft of the motor, or are added at the side wall of the motor according to actual needs, thus being equivalent to adding the number of guide channels, thereby ensuring that when the compressor is running at a high speed, the gas can be sufficiently sucked into the compression chamber of the compressor for compression, thereby the refrigeration system using the compressor can effectively improve the refrigeration performance;

[0016] The compressor provided by the utility model is also provided with a plurality of reinforcing protrusions on the main outer wall of the cylinder body, which correspond one-to-one to the guide channel formed by the outer concave inner wall of the cylinder body to ensure that the wall thickness of the cylinder body is sufficient to withstand the internal high pressure of the compressor, so that the compressor can operate normally and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the cylinder body of the compressor in the utility model.

[0018] Description of Figure Numbers:

[0019] 1. Cylinder body; 2. Air inlet; 3. Diversion channel; 4. Inner wall; 5. Outer wall of the main body; 6. Reinforcement protrusion. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "upper", "middle", "lower", "inside", "outside", "front", "back", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes the implementation of the present invention based on its overall structure.

[0022] See also Figure 1 The utility model discloses a compressor, whose compression medium is gas, which comprises a front cover assembly, a rear cover and a cylinder body 1 provided with an air inlet 2, and the cylinder body 1 is axially sealed between the front cover assembly and the rear cover;

[0023] A compression chamber is also provided in the cylinder body 1 , and the compression chamber is connected with the air inlet 2 through a plurality of guide channels 3 ; a part of the guide channels 3 is formed by a concave outer wall 4 of the cylinder body 1 which is lower than the air inlet 2 .

[0024] In the above-mentioned arrangement, the compressor using gas (such as carbon dioxide) as the compressed medium includes a front cover assembly, a cylinder body 1 and a rear cover which are assembled axially to form a sealed cavity to accommodate the internal components of the compressor. It should be understood that the internal components of the compressor include a moving disk. During the high-speed operation of the compressor, after the gas enters the cylinder body 1 from the air inlet 2, it is guided to the compression cavity formed by the moving disk through the guide channel 3 for compression, and then the compressed gas can be discharged through the exhaust hole set in the compression cavity. Among them, there are multiple guide channels 3, among which, part of the guide channels 3 is formed by the inner wall 4 of the cylinder body 1 below the air inlet 2, which is different from the previous guide channel 3 which is only formed between the moving disk and the driving shaft of the motor, or is added to the side wall of the motor according to actual needs. In this way, it is equivalent to adding the number of guide channels 3, thereby ensuring that when the compressor is running at high speed, the gas can be introduced into the compression cavity of the compressor in sufficient quantity for compression.

[0025] See also Figure 1Specifically, in the present embodiment, since the working pressure in the cylinder is high during the high-speed operation of the compressor, a plurality of reinforcing protrusions 6 are further provided on the outer wall 5 of the main body of the cylinder body 1, and the guide channel 3 formed by the outward concave inner wall 4 of the cylinder body 1 corresponds one to one with the inside and outside thereof to ensure that the wall thickness of the cylinder body 1 is sufficient to withstand the internal high pressure of the compressor, so that the compressor can operate normally and efficiently, and thus the refrigeration system using the compressor can effectively improve the refrigeration performance.

[0026] Specifically, in the present embodiment, the cylinder body 1 is roughly cylindrical, the air inlet 2 is arranged on the side thereof close to the front cover assembly, and five long groove-shaped guide channels 3 are arranged at equal intervals along the circumferential direction on the inner wall 4 of the cylinder body 1 below the air inlet 2, and the groove bottom wall and the groove side wall have an arc-shaped transition, so that the introduced gas will not cause tip impact on the cylinder body 1 during the process of passing through the guide channel 3, thereby ensuring the effective service life of the cylinder body 1.

[0027] Specifically, in the present embodiment, the top corners of one end of each guide channel 3 facing the front cover assembly are rounded, that is, the front top corners of the output end of each guide channel 3 facing the air inlet 2 are rounded, thereby avoiding the motor installed in the cylinder body 1 and allowing the gas to be smoothly sucked into the compression chamber.

[0028] Specifically, in this embodiment, the guide channel 3 and the reinforcing protrusion 6 are directly cast with the cylinder body 1 in an integrally formed manner, which also ensures that the cylinder body 1 as a whole has sufficient mechanical strength to withstand the internal high pressure during the high-speed operation of the compressor.

[0029] Specifically, in this embodiment, the distance between the inner wall 4 of the cylinder body 1 and the outer wall 5 of the main body is 9 mm, that is, the peripheral wall thickness of the cylinder body 1 is 9 mm and has the corresponding mechanical strength to withstand the high pressure inside the cylinder body 1. It should be understood that since the guide channel 3 and the reinforcement protrusion 6 are directly cast with the cylinder body 1 in an integral molding manner, the outer periphery of the reinforcement protrusion 6 is part of the outer wall 5 of the main body, so in the radial direction of the cylinder body 1, the thickness of the cylinder body 1 between the bottom of the guide channel 3 in the shape of a long groove and the highest point of the reinforcement protrusion 6 is also 9 mm. Of course, in other embodiments, the distance between the inner wall 4 of the cylinder body 1 and the outer wall 5 of the main body can also be set to other values ​​between 8 mm and 10 mm.

[0030] Specifically, this embodiment further provides a refrigeration system, including the above compressor, and the refrigeration system can continue to perform refrigeration when the compressor operates efficiently.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not limited to the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any changes, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compressor, wherein the compression medium is gas, characterized in that: It comprises a front cover assembly, a rear cover and a cylinder body provided with an air inlet, wherein the cylinder body is axially sealed between the front cover assembly and the rear cover; A compression chamber is also provided in the cylinder body, and the compression chamber is connected with the air inlet through a plurality of guide channels; part of the guide channels is formed by a concave outer wall of the cylinder body below the air inlet.

2. The compressor according to claim 1, characterized in that A plurality of reinforcing protrusions are also arranged on the outer wall of the main body of the cylinder body, and the guide channels formed by the outer concave of the inner wall of the cylinder body correspond one to one with the reinforcing protrusions.

3. The compressor according to claim 1, characterized in that A plurality of guide channels formed by the outer concave inner wall of the cylinder body are arranged at equal intervals along the circumferential direction on the inner wall portion of the cylinder body lower than the air inlet.

4. The compressor according to claim 2, characterized in that The guide channel and the reinforcing protrusion are integrally formed with the cylinder body.

5. The compressor according to claim 3, characterized in that The distance between the inner wall of the cylinder and the outer wall of the main body is 8mm-10mm.

6. The compressor according to claim 1, characterized in that The top corners of each of the guide channels at one end facing the front cover assembly are all rounded.

7. A refrigeration system, characterized in that: Comprising a compressor as described in any one of claims 1-6.

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