Refrigeration compressor upper cover with good sealing performance

Abstract

The utility model discloses a refrigeration compressor upper cover with good sealing performance, which belongs to the technical field of compressor upper covers and is characterized in that a sealing interlayer is mounted at the outer end of a sealing element, negative pressure adsorption cavities are distributed on the outer side below the sealing element, an air guide hole is formed in a sealing cover, a one-way valve is mounted at the outer end of the air guide hole, and an exhaust plate covers the outer side of the one-way valve; air exhaust holes are distributed in the air exhaust plate, the sealing part can be extruded in the attaching process when the sealing part on the upper shell of the compressor is attached to the lower shell, and air in the sealing part is extruded into the upper shell of the compressor through the one-way valve, the air exhaust plate and the air exhaust holes. After extrusion, a cavity body in a negative-pressure adsorption cavity distributed on the inner ring of the sealing piece is of a negative-pressure structure, the negative-pressure adsorption cavity and the shell are adsorbed during loosening, and precise attachment of the connecting position of the upper shell, the sealing piece and the lower shell of the compressor is improved; and a multi-blocking sealing structure is realized.

Description

Technical Field

[0001] The utility model relates to an upper cover of a refrigeration compressor with good sealing performance, belonging to the technical field of upper covers of compressors. Background Art

[0002] For example, an efficient heat dissipation type compressor housing disclosed in the application number: 201210257932.5 is formed by docking an upper cover and a lower housing. The upper cover is made of aluminum alloy material by stamping, which improves the heat distribution inside the compressor, enables the heat inside the compressor housing to be dissipated outward in time and quickly, reduces the heating of the reflux refrigerant gas due to the too high temperature inside the compressor, and thus improves the refrigeration efficiency of the compressor.

[0003] Based on retrieval and analysis, it is found that there are still deficiencies in the existing technology:

[0004] The upper cover of the compressor in the existing technology has good heat dissipation effect, but the sealing effect at the connection is poor. Therefore, an upper cover of a refrigeration compressor with good sealing performance is needed to improve the above deficiencies. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide an upper cover of a refrigeration compressor with good sealing performance.

[0006] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0007] An upper cover of a refrigeration compressor with good sealing performance includes a compressor upper housing for sealing and a cover;

[0008] Sealing members are installed at the connection of the compressor upper housing. Sealing cavities are respectively arranged on the upper and lower sides of the sealing members. Sealing interlayers are installed in the sealing cavities, and negative pressure adsorption cavities for extrusion and adsorption are distributed in the sealing cavities;

[0009] A gas guiding structure is installed on the cover.

[0010] Preferably, the gas guiding structure includes a gas guiding hole, a one-way valve, an exhaust plate and an exhaust hole;

[0011] A gas guiding hole is arranged on the cover. A one-way valve is installed at the outer end of the gas guiding hole. An exhaust plate covers the one-way valve, and exhaust holes are distributed on the exhaust plate.

[0012] Preferably, the sealing cavity on the sealing member is an inwards recessed structure.

[0013] Preferably, the sealing member and the sealing interlayer are elastic structures.

[0014] Preferably, the negative pressure adsorption cavity in the sealing cavity is an inwards recessed structure.

[0015] Preferably, the one-way valve is a structure that only allows outflow and not inflow.

[0016] Beneficial technical effects of the present utility model:

[0017] A top cover of a refrigeration compressor with good sealing performance provided by the present utility model. A sealing cover is covered outside the upper shell of the compressor. A sealing member is sleeved on the sealing cover. A sealing interlayer is installed at the outer end of the sealing member. A negative pressure adsorption cavity is distributed outside the lower side of the sealing member. An air guide hole is opened on the sealing cover. A one-way valve is installed at the outer end of the air guide hole. An exhaust plate is covered outside the one-way valve. Exhaust holes are distributed on the exhaust plate. When the sealing member on the upper shell of the compressor is attached to the lower shell, the sealing member will be extruded during the attachment process. The gas in the sealing member is extruded into the upper shell of the compressor through the one-way valve, the exhaust plate and the exhaust holes. After extrusion, the cavity in the negative pressure adsorption cavity distributed inside the inner ring of the sealing member presents a negative pressure structure. When relaxed, the negative pressure adsorption cavity adsorbs to the shell, improving the tight fit at the connection between the upper shell of the compressor, the sealing member and the lower shell. A sealing interlayer is installed inside the sealing member, and the sealing interlayer is placed inside the lower shell to achieve a multi-blocking sealing structure. Description of the Drawings

[0018] Figure 1 Figure 10 is an exploded perspective view of the overall device according to a preferred embodiment of a top cover of a refrigeration compressor with good sealing performance of the present utility model;

[0019] Figure 2 Figure 14 is an enlarged view of the structure at A according to a preferred embodiment of a top cover of a refrigeration compressor with good sealing performance of the present utility model;

[0020] Figure 3 Figure 18 is a bottom side view according to a preferred embodiment of a top cover of a refrigeration compressor with good sealing performance of the present utility model;

[0021] Figure 4 Figure 22 is an enlarged view of the structure at B according to a preferred embodiment of a top cover of a refrigeration compressor with good sealing performance of the present utility model.

[0022] In the figure: 1. Upper shell of the compressor; 2. Sealing cover; 3. Air guide hole; 4. Sealing member; 5. Sealing cavity; 6. Sealing interlayer; 7. Negative pressure adsorption cavity; 8. One-way valve; 9. Exhaust plate; 10. Exhaust hole. Detailed Embodiments

[0023] To make the technical solutions of the present utility model clearer and more definite for those skilled in the art, the present utility model will be further described in detail below in conjunction with the embodiments and the drawings. However, the embodiments of the present utility model are not limited thereto.

[0024] Such as Figure 1 - Figure 4As shown in the figure, a top cover of a refrigeration compressor with good sealing performance provided by this embodiment includes a compressor upper housing 1 for sealing and a cover 2;

[0025] A seal 4 is installed at the connection of the compressor upper housing 1. Sealing cavities 5 are respectively formed on the upper and lower sides of the seal 4. A sealing interlayer 6 is installed in the sealing cavity 5, and negative pressure adsorption cavities 7 for extrusion and adsorption are distributed in the sealing cavity 5;

[0026] A gas guiding structure is installed on the cover 2.

[0027] The gas guiding structure includes a gas guiding hole 3, a one-way valve 8, an exhaust plate 9, and an exhaust hole 10;

[0028] A gas guiding hole 3 is formed on the cover 2. A one-way valve 8 is installed at the outer end of the gas guiding hole 3. An exhaust plate 9 covers the one-way valve 8, and exhaust holes 10 are distributed on the exhaust plate 9.

[0029] The sealing cavity 5 on the seal 4 is an inlaid structure.

[0030] The seal 4 and the sealing interlayer 6 are elastic structures.

[0031] The negative pressure adsorption cavity 7 in the sealing cavity 5 is an inlaid structure.

[0032] The one-way valve 8 is a structure that only allows gas to flow out and not in.

[0033] As Figure 1 - Figure 4 As shown in the figure, the working process of a top cover of a refrigeration compressor with good sealing performance provided by this embodiment is as follows: When the seal 4 on the compressor upper housing 1 is attached to the lower housing, the seal 4 will be squeezed during the attachment process. The gas in the seal 4 is extruded into the compressor upper housing 1 through the one-way valve 8, the exhaust plate 9, and the exhaust hole 10. After extrusion, the cavity in the negative pressure adsorption cavity 7 distributed in the inner ring of the seal 4 presents a negative pressure structure. When relaxed, the negative pressure adsorption cavity 7 adsorbs to the housing, improving the precise fit at the connection between the compressor upper housing 1 and the seal 4 and the lower housing. A sealing interlayer 6 is installed in the seal 4, and the sealing interlayer 6 is placed into the lower housing to achieve a multi-blocking sealing structure.

[0034] Embodiment

[0035] As Figure 1 - Figure 4As shown in the figure, a cover 2 is covered outside the upper housing 1 of the compressor. A seal 4 is sleeved on the cover 2. A sealing interlayer 6 is installed at the outer end of the seal 4. A negative pressure adsorption cavity 7 is distributed outside the lower side of the seal 4. An air guide hole 3 is opened on the cover 2. A one-way valve 8 is installed at the outer end of the air guide hole 3. An exhaust plate 9 is covered outside the one-way valve 8. Exhaust holes 10 are distributed on the exhaust plate 9. When the seal 4 on the upper housing 1 of the compressor is fitted with the lower housing, the seal 4 will be squeezed during the fitting process. The squeezing will extrude the gas in the seal 4 into the upper housing 1 of the compressor through the one-way valve 8, the exhaust plate 9 and the exhaust holes 10. After extrusion, the cavity in the negative pressure adsorption cavity 7 distributed in the inner ring of the seal 4 presents a negative pressure structure. When relaxed, the negative pressure adsorption cavity 7 adsorbs to the housing, improving the precise fitting at the connection between the upper housing 1 of the compressor, the seal 4 and the lower housing. A sealing interlayer 6 is installed in the seal 4. The sealing interlayer 6 is placed into the lower housing to realize a multiple-blocking sealing structure.

[0036] As mentioned above, the above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the scope disclosed by the present invention, according to the technical solution and its concept of the present invention, makes equivalent substitutions or changes, all belong to the protection scope of the present invention.

Claims

1. A refrigeration compressor upper cover with good sealing performance, comprising a compressor upper shell (1) and a sealing cover (2) for sealing; Features: A sealing member (4) is installed at the connection of the compressor upper shell (1), and sealing cavities (5) are respectively provided on the upper and lower sides of the sealing member (4), a sealing interlayer (6) is installed in the sealing cavity (5), and negative pressure adsorption cavities (7) for extrusion adsorption are distributed in the sealing cavity (5); An air guide structure is installed on the sealing cover (2).

2. A refrigeration compressor upper cover with good sealing performance according to claim 1, characterized in that: An air guide structure comprising an air guide hole (3), a one-way valve (8), an exhaust plate (9) and an exhaust hole (10); The sealing cover (2) is provided with an air guide hole (3), the outer end of the air guide hole (3) is provided with a one-way valve (8), the one-way valve (8) is covered with an exhaust plate (9), and the exhaust plate (9) is provided with exhaust holes (10).

3. A refrigeration compressor upper cover with good sealing performance according to claim 2, characterized in that: The sealing cavity (5) on the sealing member (4) is an inwardly recessed structure.

4. A refrigeration compressor upper cover with good sealing performance according to claim 3, characterized in that: The sealing element (4) and the sealing interlayer (6) are elastic structures.

5. A refrigeration compressor upper cover with good sealing performance according to claim 4, characterized in that: The negative pressure adsorption chamber (7) in the sealed chamber (5) is a recessed structure.

6. A refrigeration compressor upper cover with good sealing performance according to claim 5, characterized in that: The one-way valve (8) is an outlet-only structure.

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