Upper end cover of compressor and compressor

Abstract

The invention relates to the technical field of compressors, and provides an upper end cover of a compressor and the compressor. A first mounting position and a second mounting position are formed on the plane part, the first mounting position is used for mounting a binding post, and the second mounting position is used for mounting an exhaust pipe; the concave parts are concave towards the interior of the compressor in the first direction relative to the plane part, the multiple concave parts are formed in the circumferential edge of the upper end cover, the multiple concave parts are arranged around the first axis at intervals in a fan-shaped area with the central angle smaller than 245 degrees, and every two concave parts are connected through the plane part. Therefore, a concave-convex structure is formed by the concave part and the plane part connected with the concave part, the concave-convex structure can be regarded as a reinforcing rib, the structural strength of the upper end cover can be improved, the pressure resistance and the pulsation resistance of the upper end cover are further improved, and the first mounting position for mounting the binding post is arranged on the plane part, so that the binding post is conveniently butted with the junction box, and a sealing structure is arranged.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to an upper end cover of a compressor and a compressor. Background Art

[0002] At present, the pulsation and water pressure resistance of the flat upper shell cover assembly cannot meet the pressure resistance requirements of high-pressure refrigerants such as R410A. The prior art proposes that "a circular convex or concave surface is provided on the upper surface of the cover, or reinforcing ribs are provided between the hole formed on the cover and the welding part of the terminal and the reinforcing part on the exhaust pipe side" to improve the local strength of the sealing terminal or exhaust pipe, thereby achieving the purpose of improving the pressure resistance. However, the reinforced part provided causes another problem. The contact plane between the upper surface of the cover and the sealing terminal cover is reduced. At the same time, the position of the fixing screw is far away from the sealing terminal, which will weaken the contact surface pressure, making it impossible to effectively seal the terminal connection, and the dust and water resistance level is reduced.

[0003] The spherical upper shell cover has high compressive strength, but the large curved surface makes it difficult to effectively fit and seal.

[0004] Based on the above, it is difficult to promote products in areas that use high-pressure refrigerants and have high protection level requirements.

[0005] Therefore, there is an urgent need for an upper end cover of a compressor and a compressor to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide an upper end cover of a compressor and a compressor, which can improve the structural strength of the compressor and facilitate the setting of a seal at the terminal.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] The upper cover of the compressor includes:

[0009] A plane portion, wherein the plane portion forms a first mounting position and a second mounting position, wherein the first mounting position is used to mount a terminal post, and the second mounting position is used to mount an exhaust pipe;

[0010] A recessed portion is recessed inwardly of the compressor in a first direction relative to the planar portion. A plurality of recessed portions are provided. The plurality of recessed portions are formed on the circumferential edge of the upper end cover. In a sector-shaped area with a central angle less than 245°, the plurality of recessed portions are spaced apart around the first axis, and two of the recessed portions are connected by the planar portion.

[0011] As a preferred technical solution for the upper end cover of the compressor, the second mounting position is located between the two recesses, and in the first direction, a height difference △H between the recess and the planar portion satisfies 1mm≤△H≤5mm.

[0012] As a preferred technical solution for the upper end cover of the compressor, a distance L between the recess and the first installation position satisfies 10 mm ≤ L.

[0013] As a preferred technical solution for the upper end cover of the compressor, the planar portion is provided with a flange structure at the first mounting position for mounting the terminal, and in the first direction, a thickness H1 of the flange structure satisfies 1mm≤H1≤6mm.

[0014] As a preferred technical solution for the upper end cover of the above-mentioned compressor, a circular arc chamfer is provided on the peripheral edge.

[0015] As a preferred technical solution for the upper end cover of the above-mentioned compressor, the radius R of the above-mentioned circular chamfer satisfies 5mm≤R≤12mm.

[0016] As a preferred technical solution for the upper end cover of the compressor, a plurality of studs are protruding from the first mounting position, and the plurality of studs are located around the terminal posts and are used to fix the terminal box and the gasket.

[0017] As a preferred technical solution for the upper end cover of the above-mentioned compressor, the above-mentioned recess is provided with a third installation position for installing a hook.

[0018] As a preferred technical solution for the upper end cover of the compressor, the first mounting position, the second mounting position and the third mounting position are not co-linear.

[0019] A compressor is also provided, comprising the upper end cover of the compressor mentioned above.

[0020] Beneficial effects of the present invention:

[0021] The present invention provides an upper end cover of a compressor, comprising a plane portion and a recessed portion. The plane portion forms a first mounting position and a second mounting position, the first mounting position is used to mount a terminal, and the second mounting position is used to mount an exhaust pipe; the recessed portion is recessed inwardly of the compressor in a first direction relative to the plane portion, and a plurality of recessed portions are provided, and the plurality of recessed portions are formed on the circumferential edge of the upper end cover, and in a sector-shaped region with a central angle of less than 245°, the plurality of recessed portions are arranged at intervals around a first axis, and two recessed portions are connected by the plane portion.

[0022] Exemplarily, in the projection in the first direction, the upper end cover is circular, and the upper end cover is provided with two fan-shaped areas, wherein the central angle α of the first fan-shaped area satisfies α≥135°, and the central angle β of the second fan-shaped area satisfies β≤245°, and α+β=360°, that is, the first fan-shaped area and the second fan-shaped area are spliced ​​into a complete circular projection of the upper end cover. A part of the plane portion is located in the first fan-shaped area, and the other part is located in the second fan-shaped area. In the second fan-shaped area, the plane portion forms a plurality of U-shaped grooves that collapse into the compressor, and the U-shaped grooves form openings at the circumferential edge and the upper end face of the upper end cover. The U-shaped grooves are recessed portions, and the plurality of recesses are arranged at intervals, and the two recesses are connected by the plane portion. Thus, the recessed portions formed in the second fan-shaped area and the plane portion connecting the recessed portions form a concave-convex structure, which can be regarded as a reinforcing rib, and can improve the structural strength of the upper end cover, thereby improving the pressure resistance and pulsation performance of the upper end cover.

[0023] Furthermore, since the terminal needs to be docked with the junction box and a certain degree of sealing is required between the two, in this embodiment, the first mounting position for installing the terminal is set on a plane portion located in the first fan-shaped area, and the end face of the plane portion is relatively flat so that a sealing structure can be set for the junction box. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0025] Figure 1 The structure of the upper cover of the compressor provided by the embodiment of the present invention is schematically shown. Figure 1 ;

[0026] Figure 2 The structure of the upper end cover of the compressor provided by the embodiment of the present invention is schematically shown. Figure 2 ;

[0027] Figure 3 is a cross-sectional view of an upper end cover of a compressor provided by an embodiment of the present invention;

[0028] Figure 4 1 is an exploded schematic diagram of an upper end cover (including a terminal box) of a compressor provided in an embodiment of the present invention;

[0029] Figure 5 is a top view of an upper end cover (including a terminal box) of a compressor provided in an embodiment of the present invention;

[0030] Figure 6It is a water pressure stress cloud diagram of the upper end cover of the compressor provided by an embodiment of the present invention;

[0031] Figure 7 It is a cloud diagram of water pressure resistance deformation of the upper end cover of the compressor provided by an embodiment of the present invention.

[0032] In the figure:

[0033] X, first direction;

[0034] 1. Upper end cover; 2. Terminal post; 3. Exhaust pipe; 4. Hook; 5. Junction box; 6. Gasket;

[0035] 100, plane portion; 111, flange structure; 112, stud;

[0036] 200. Recessed part; 201. First recessed part; 202. Second recessed part; 203. Third recessed part;

[0037] 300. Arc chamfer. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] like Figures 1 to 5 As shown, the present invention provides an upper end cover 1 of a compressor, comprising a plane portion 100 and a recessed portion 200. The plane portion 100 forms a first mounting position and a second mounting position, the first mounting position is used to mount the terminal 2, and the second mounting position is used to mount the exhaust pipe 3; the recessed portion 200 is recessed in the compressor in the first direction X relative to the plane portion 100, and a plurality of recessed portions 200 are provided, and a plurality of recessed portions 200 are formed on the circumferential edge of the upper end cover 1, and in a sector-shaped region with a central angle of less than 245°, a plurality of recessed portions 200 are arranged at intervals around the first axis, and two recessed portions 200 are connected by the plane portion 100.

[0043] Exemplarily, in the projection in the first direction X, the upper end cover 1 is circular, and two fan-shaped areas are arranged on the upper end cover 1, wherein the central angle α of the first fan-shaped area satisfies α≥135°, the central angle β of the second fan-shaped area satisfies β≤245°, and α+β=360°, that is, the first fan-shaped area and the second fan-shaped area are spliced ​​into a complete circular projection of the upper end cover 1. A portion of the planar portion 100 is located in the first fan-shaped area, and the other portion is located in the second fan-shaped area. In the second fan-shaped area, the planar portion 100 forms a plurality of U-shaped grooves that collapse into the compressor. The U-shaped grooves form openings at the circumferential edge and the upper end surface of the upper end cover 1. The U-shaped grooves are recessed portions 200. A plurality of recesses 200 are arranged at intervals, and two recesses 200 are connected by the planar portion 100. In this way, a concave-convex structure is formed by the recesses 200 formed in the second fan-shaped area and the planar portion 100 connecting the recesses 200, which can be regarded as reinforcing ribs, which can improve the structural strength of the upper end cover 1, thereby improving the pressure resistance and pulsation performance of the upper end cover 1.

[0044] Furthermore, since the terminal 2 needs to be docked with the junction box 5 and a certain degree of sealing is required between the two, in this embodiment, the first mounting position for installing the terminal 2 is set on the plane portion 100 located in the first fan-shaped area, and the end surface of the plane portion 100 is relatively flat, so that the junction box 5 can be provided with a sealing structure.

[0045] Optionally, the second installation position is located between the two recesses 200 , and in the first direction X, a height difference ΔH between the recess 200 and the planar portion 100 satisfies 1 mm ≤ ΔH ≤ 5 mm.

[0046] When the upper end cover 1 is subjected to pressure, the pressure on the second installation position can be reduced, thereby preventing the exhaust pipe 3 from being deformed due to force.

[0047] Optionally, a distance L between the recess 200 and the first mounting position satisfies 10 mm ≤ L.

[0048] With such arrangement, when the upper end cover 1 is subjected to pressure, the pressure on the terminal post 2 can be reduced, thereby preventing the terminal post 2 from being deformed due to force.

[0049] Optionally, the plane portion 100 is provided with a flange structure 111 at the first installation position for installing the terminal 2, and in the first direction X, the thickness H1 of the flange structure 111 satisfies 1mm≤H1≤6mm.

[0050] Exemplarily, the first mounting portion is provided with a plug hole, the terminal 2 is inserted into the plug hole, and the peripheral edge of the plug hole forms a flange structure 111. In this embodiment, the flange structure 111 is bent toward the inside of the compressor. On the one hand, the flange structure 111 forms a guide surface, which facilitates the terminal 2 to be inserted into the wiring hole along the guide surface, and part of the flange structure 111 can straighten the terminal 2. Furthermore, the flange structure 111 can also strengthen the structural strength of the plug hole and play the role of a reinforcing rib.

[0051] Stress concentration is a state in which stress is concentrated at a certain part of the material. Stress is the load applied to a unit cross-sectional area of ​​the material. In addition, the ratio of the maximum stress to the average stress is called the stress concentration coefficient. The stress concentration coefficient will increase at the part where the shape of the part changes sharply. Therefore, the stress is very large at the corner where the faces intersect vertically. The upper end cover 1 includes a top wall and a peripheral side wall. The plane portion 100 and the recessed portion 200 are both formed on the top wall. The peripheral side wall is perpendicular to the top wall and is connected and fixed to the top wall on the peripheral side. In this way, when the upper end cover 1 is subjected to pressure, stress concentration is likely to occur on the inner side of the connection position between the peripheral side wall and the top wall, causing the upper end cover 1 to deform. For this reason, in this embodiment, a circular chamfer 300 is provided on the peripheral edge. By providing the circular chamfer 300, the shape change at the connection position between the peripheral side wall and the top wall can be made smooth and stress concentration can be reduced.

[0052] Generally, the larger the R angle, the better. However, when assembling parts with other parts, care should be taken not to cause interference due to increasing the R angle.

[0053] Therefore, optionally, the radius R of the arc chamfer 300 satisfies 5 mm ≤ R ≤ 12 mm.

[0054] It should be noted that the radius R of the arc chamfer 300 satisfies 0.7≤R / H2≤4, where H2 is the thickness of the upper end cover 1 in the first direction X.

[0055] Optionally, a plurality of studs 112 are protruding from the first installation position, and the plurality of studs 112 are located on the peripheral side of the terminal 2 and are used to fix the terminal box 5 and the gasket 6 .

[0056] Exemplarily, the axis of the stud 112 is parallel to the first direction X, one axial end of the stud 112 is fixed to the first installation position, and the other axial end of the stud 112 can be inserted into the gasket 6 and the junction box 5 in sequence and then threadedly connected with the nut, and the junction box 5 is sandwiched between the nut and the gasket 6. The plurality of studs 112 can limit the junction box 5 and correct the relative position of the junction box 5 relative to the terminal 2. The provision of the gasket 6 enables the junction box 5 to form a soft contact with the first installation position, avoiding the junction box 5 and the first installation position not being able to fit tightly due to reasons such as processing accuracy.

[0057] Preferably, the plurality of studs 112 are evenly distributed around the axis of the terminal 2 , so that the terminal box 5 is subjected to an even force.

[0058] Optionally, the recess 200 is provided with a third installation position for installing the hook 4 .

[0059] Exemplarily, in this embodiment, the recess 200 includes a first recess 201, a second recess 202 and a third recess 203, wherein the first recess 201 is provided with a third mounting position for mounting the hook 4. A threaded hole is provided on the bottom end surface of the first recess 201, and the hook 4 is connected to the first recess 201 through a threaded fastener, which passes through the hook 4 along the first direction X and is inserted into the threaded hole and threadedly connected to the first recess 201.

[0060] Optionally, the first mounting position, the second mounting position and the third mounting position are not co-linear.

[0061] Exemplarily, the first mounting position, the second mounting position and the third mounting position are respectively located at the three vertices of the triangle. In order to assemble with the terminal 2, the exhaust pipe 3 or the hook 4, corresponding openings need to be opened on the first mounting position, the second mounting position or the third mounting position. If the three openings are located on the same straight line, the structural strength of the straight line area is poor. When the upper end cover 1 is subjected to pressure, the straight line area is very likely to deform or break. Therefore, in this embodiment, the first mounting position, the second mounting position and the third mounting position are not colinear, forming a triangle, so that the openings are dispersed to avoid poor pressure bearing capacity caused by low local structural strength.

[0062] like Figure 6 As shown, the upper cover 1 of the mass-produced TH and ATH550 models are existing solutions, and IP55 is the upper cover 1 solution involved in this application. Under the pressure of 21.3MPa of R410A refrigerant, the stress comparison is red indicating the highest stress and blue indicating the lowest stress. IP55 has the lowest structural stress value, which means it has the best pressure bearing capacity.

[0063] like Figure 7 As shown, the upper cover 1 of the mass-produced TH and ATH550 models are both existing solutions, and IP55 is the upper cover 1 solution involved in this application. Under the pressure of 21.3MPa of R410A refrigerant, the deformation amount is compared. Red indicates the highest stress and blue indicates the lowest stress. IP55 has the lowest structural stress value, which means the smallest deformation after pressure.

[0064] A compressor is also provided, comprising the upper end cover 1 of the compressor mentioned above.

[0065] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. The upper end cover of the compressor is characterized in that: include: A plane portion (100), the plane portion (100) forming a first mounting position and a second mounting position, the first mounting position being used to mount a terminal post (2), and the second mounting position being used to mount an exhaust pipe (3); A recess (200), wherein the recess (200) is recessed inwardly of the compressor in a first direction (X) relative to the plane portion (100), and a plurality of recesses (200) are provided, wherein the plurality of recesses (200) are formed on the circumferential edge of the upper end cover (1), and within a sector-shaped area with a central angle less than 245°, the plurality of recesses (200) are spaced apart around a first axis, and two of the recesses (200) are connected via the plane portion (100).

2. The upper end cover of the compressor according to claim 1, characterized in that: In the first direction (X), a height difference ΔH between the concave portion (200) and the planar portion (100) satisfies 1mm≤ΔH≤5mm.

3. The upper end cover of the compressor according to claim 1, characterized in that: The distance L between the recess (200) and the first mounting position satisfies 10 mm ≤ L.

4. The upper end cover of the compressor according to claim 1, characterized in that: The plane portion (100) is provided with a flange structure (111) at the first mounting position for mounting the terminal (2); in the first direction (X), a thickness H1 of the flange structure (111) satisfies 1mm≤H1≤6mm.

5. The upper end cover of the compressor according to claim 1, characterized in that: The peripheral edge is provided with a circular arc chamfer (300).

6. The upper end cover of the compressor according to claim 5, characterized in that: The radius R of the circular chamfer (300) satisfies 5mm≤R≤12mm.

7. The upper end cover of the compressor according to claim 1, characterized in that: The first installation position is provided with a plurality of studs (112), which are located on the peripheral side of the terminal post (2) and are used to fix the terminal box (5) and the gasket (6).

8. The upper end cover of the compressor according to claim 1, characterized in that: The second installation position is located between the two recesses (200), and the recess (200) is provided with a third installation position for installing a hook (4).

9. The upper end cover of the compressor according to claim 8, characterized in that: The first installation position, the second installation position and the third installation position are not collinear.

10. A compressor, characterized in that An upper end cover (1) of a compressor comprising any one of claims 1 to 9.

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