Upper end cover of compressor and compressor

Abstract

The utility model 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] This utility model relates to the field of compressor technology, and in particular to an upper cover for a compressor and a compressor. Background Technology

[0002] Currently, the pulsation and water pressure resistance of flat upper shell assemblies cannot meet the pressure resistance requirements of high-pressure refrigerants such as R410A. Existing technologies propose "setting a circular convex or concave surface on the top of the cover, or setting reinforcing ribs between the hole formed on the cover and the welded part of the terminal block and the reinforcing part on the exhaust pipe side" to improve the local strength at the sealing terminal block or exhaust pipe, thereby improving the pressure resistance. However, the added reinforcing parts cause another problem: the contact surface between the upper surface of the cover and the sealing terminal block cover is reduced, and the position of the fixing screw away from the sealing terminal block weakens the contact surface pressure, making it impossible to effectively seal the connection point of the terminal block, thus reducing the dustproof and waterproof rating.

[0003] The spherical top cover has high pressure resistance, but its large arc surface makes it difficult to effectively fit and seal.

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

[0005] Therefore, there is an urgent need for an upper cover for a compressor and a compressor in order to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide an upper cover for a compressor and a compressor that can improve its structural strength and facilitate the installation of a seal at the terminal block.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] The compressor's upper cover includes:

[0009] The planar portion forms a first mounting position and a second mounting position, the first mounting position being used to mount a terminal block and the second mounting position being used to mount an exhaust pipe.

[0010] The recess is recessed into the compressor in a first direction relative to the planar portion. Multiple recesses are provided and formed on the circumferential edge of the upper cover. In a fan-shaped area with a central angle of less than 245°, the multiple recesses are arranged at intervals around the first axis and are connected to each other by the planar portion.

[0011] As a preferred embodiment of the upper cover of the compressor, the second mounting position is located between the two recesses, and in the first direction, the height difference ΔH between the recess and the flat portion satisfies 1mm≤ΔH≤5mm.

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

[0013] As a preferred technical solution for the upper cover of the compressor, the flat part is provided with a flange structure at the first mounting position for mounting the terminal block. In the first direction, the thickness H1 of the flange structure satisfies 1mm≤H1≤6mm.

[0014] As a preferred technical solution for the upper cover of the aforementioned compressor, the peripheral edges are provided with rounded chamfers.

[0015] As a preferred technical solution for the upper cover of the aforementioned compressor, the radius R of the aforementioned chamfered corner satisfies 5mm≤R≤12mm.

[0016] As a preferred technical solution for the upper cover of the compressor, the first mounting position is provided with a plurality of studs, which are located around the terminal block and are used to fix the junction box and gasket.

[0017] As a preferred embodiment of the upper cover of the aforementioned compressor, the aforementioned recess is provided with a third mounting position for mounting a hook.

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

[0019] A compressor is also provided, including the upper cover of the compressor described above.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides an upper cover for a compressor, including a flat portion and a recess. The flat portion forms a first mounting position and a second mounting position. The first mounting position is used to mount a terminal block, and the second mounting position is used to mount an exhaust pipe. The recess is recessed into the compressor in a first direction relative to the flat portion. Multiple recesses are provided, formed on the circumferential edge of the upper cover, within a fan-shaped area with a central angle less than 245°. The multiple recesses are spaced apart around a first axis, and two recesses are connected by the flat portion.

[0022] For example, in the projection of the first direction, the upper cover is circular, and the upper cover is provided with two fan-shaped regions. The central angle α of the first fan-shaped region satisfies α≥135°, and the central angle β of the second fan-shaped region satisfies β≤245°, and α+β=360°. That is, the first fan-shaped region and the second fan-shaped region are spliced ​​together to form a complete circular projection of the upper cover. A part of the planar portion is located in the first fan-shaped region, and another part is located in the second fan-shaped region. In the second fan-shaped region, the planar portion forms multiple U-shaped grooves that collapse into the compressor. The U-shaped grooves form openings on the circumferential edge and the upper surface of the upper cover. The U-shaped grooves are recesses. Multiple recesses are arranged at intervals, and two recesses are connected by the planar portion. In this way, the recesses formed in the second fan-shaped region and the planar portion connecting the recesses constitute a concave-convex structure, which can be regarded as a reinforcing rib, which can improve the structural strength of the upper cover, thereby improving the pressure resistance and pulsation performance of the upper cover.

[0023] Furthermore, since the terminal block needs to be connected to the junction box and the two need to have a certain degree of sealing, in this embodiment, the first mounting position for installing the terminal block is set on the flat part located in the first sector area. The end face of the flat part is relatively flat so that the junction box can be equipped with a sealing structure. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the upper cover of the compressor provided in this embodiment of the utility model. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the structure of the upper cover of the compressor provided in this embodiment of the utility model. Figure 2 ;

[0027] Figure 3 This is a cross-sectional view of the upper end cover of the compressor provided in this embodiment of the utility model;

[0028] Figure 4 This is an exploded view of the upper cover (including junction box) of the compressor provided in this embodiment of the utility model;

[0029] Figure 5 This is a top view of the upper cover (including junction box) of the compressor provided in this embodiment of the utility model;

[0030] Figure 6This is a water pressure stress cloud diagram of the upper cover of the compressor provided in this embodiment of the utility model;

[0031] Figure 7 This is a water pressure deformation cloud diagram of the upper cover of the compressor provided in this embodiment of the utility model.

[0032] In the picture:

[0033] X, first direction;

[0034] 1. Top cover; 2. Terminal block; 3. Exhaust pipe; 4. Hook; 5. Junction box; 6. Gasket;

[0035] 100. Flat part; 111. Flanged structure; 112. Stud;

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

[0037] 300. Rounded chamfer. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] like Figures 1 to 5 As shown, this utility model provides an upper cover 1 for a compressor, including a flat portion 100 and a recess 200. The flat portion 100 forms a first mounting position and a second mounting position. The first mounting position is used to mount a terminal block 2, and the second mounting position is used to mount an exhaust pipe 3. The recess 200 is recessed into the compressor in a first direction X relative to the flat portion 100. Multiple recesses 200 are provided, formed on the circumferential edge of the upper cover 1, within a fan-shaped area with a central angle less than 245°. The multiple recesses 200 are spaced apart around a first axis, and two recesses 200 are connected by the flat portion 100.

[0043] For example, in the projection of the first direction X, the upper cover 1 is circular, and the upper cover 1 is provided with two fan-shaped regions, wherein the central angle α of the first fan-shaped region satisfies α≥135°, the central angle β of the second fan-shaped region satisfies β≤245°, and α+β=360°, that is, the first fan-shaped region and the second fan-shaped region are spliced ​​together to form a complete circular projection of the upper cover 1. A portion of the planar portion 100 is located within the first sector area, and another portion is located within the second sector area. Within the second sector area, the planar portion 100 forms multiple U-shaped grooves that collapse into the compressor. The U-shaped grooves have openings at both the circumferential edge and the upper surface of the upper cover 1. The U-shaped grooves are recesses 200. Multiple recesses 200 are spaced apart, and two recesses 200 are connected by the planar portion 100. Thus, the recesses 200 formed in the second sector area and the planar portion 100 connecting the recesses 200 constitute a concave-convex structure, which can be regarded as a reinforcing rib. This can improve the structural strength of the upper cover 1, thereby improving the pressure resistance and pulsation performance of the upper cover 1.

[0044] Furthermore, since the terminal block 2 needs to be connected to the junction box 5 and the two need to have a certain degree of sealing, in this embodiment, the first mounting position for mounting the terminal block 2 is set on the flat part 100 located in the first sector area. The end face of the flat part 100 is relatively flat so that the junction box 5 can be provided with a sealing structure.

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

[0046] When the upper cover 1 is subjected to pressure, it can reduce the pressure on the second mounting position, thereby preventing the exhaust pipe 3 from being deformed by force.

[0047] Optionally, the distance L from the recess 200 to the first mounting position satisfies 10mm≤L.

[0048] With this design, when the upper cover 1 is subjected to pressure, the pressure on the terminal block 2 can be reduced, thereby preventing the terminal block 2 from deforming under stress.

[0049] Optionally, the flat portion 100 is provided with a flange structure 111 at the first mounting position for mounting the terminal block 2. In the first direction X, the thickness H1 of the flange structure 111 satisfies 1mm≤H1≤6mm.

[0050] For example, the first mounting part has a plug-in hole, and the terminal 2 is inserted into the plug-in hole. The peripheral edge of the plug-in hole forms a flange structure 111. In this embodiment, the flange structure 111 bends inward toward the compressor. Firstly, the flange structure 111 forms a guide surface, which facilitates the insertion of the terminal 2 into the plug-in 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 at the plug-in hole, acting as a reinforcing rib.

[0051] Stress concentration is the state of stress concentrated at a certain part of a material. Stress is the load applied to a unit cross-sectional area of ​​a material. Furthermore, the ratio of the maximum stress to the average stress is called the stress concentration factor. The stress concentration factor increases at locations where the shape of a part changes drastically. Therefore, the stress is very high at the corners where surfaces intersect perpendicularly. The upper cover 1 includes a top wall and peripheral side walls. The flat portion 100 and the recess 200 are both formed on the top wall. The peripheral side walls are perpendicular to the top wall and are connected and fixed to the top wall peripherally. Thus, when the upper cover 1 is subjected to pressure, stress concentration easily occurs on the inner side of the connection between the peripheral side wall and the top wall, causing deformation of the upper cover 1. Therefore, in this embodiment, a rounded chamfer 300 is provided on the peripheral edge. By providing the rounded chamfer 300, the shape change at the connection between the peripheral side wall and the top wall can be made gentler, reducing stress concentration.

[0052] Generally, the larger the radius (R) angle, the better. However, when assembling parts with other parts, care should be taken to avoid interference caused by increasing the radius angle.

[0053] Therefore, the radius R of the chamfered arc of 300 can be selected to satisfy 5mm≤R≤12mm.

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

[0055] Optionally, the first mounting position is provided with a plurality of studs 112, which are located around the terminal block 2 and are used to fix the junction box 5 and the gasket 6.

[0056] For example, 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 mounting position, and the other axial end of the stud 112 can be sequentially inserted into the washer 6 and the junction box 5 and then threadedly connected to the nut. The junction box 5 is sandwiched between the nut and the washer 6. Multiple studs 112 can limit the position of the junction box 5 and correct its relative position to the terminal block 2. The washer 6 allows the junction box 5 to form a soft contact with the first mounting position, preventing the junction box 5 from not fitting tightly with the first mounting position due to machining accuracy or other reasons.

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

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

[0059] For example, in this embodiment, the recess 200 includes a first recess 201, a second recess 202, and a third recess 203. 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 face of the first recess 201. The hook 4 is connected to the first recess 201 by a threaded fastener. The threaded fastener passes through the hook 4 along the first direction X and is inserted into the threaded hole to be threadedly connected to the first recess 201.

[0060] Optionally, the first mounting position, the second mounting position, and the third mounting position are not collinear.

[0061] For example, the first mounting position, the second mounting position, and the third mounting position are located at the three vertices of a triangle. To assemble with the terminal block 2, the exhaust pipe 3, or the hook 4, corresponding openings need to be provided at the first, second, or third mounting positions. If the three openings are located on the same straight line, the structural strength of that straight area is poor. When the upper cover 1 is subjected to pressure, that straight area is prone to deformation or breakage. Therefore, in this embodiment, the first, second, and third mounting positions are not collinear, forming a triangle, thus dispersing the openings and avoiding poor pressure-bearing capacity due to excessively low local structural strength.

[0062] like Figure 6 As shown, the upper cover 1 of the mass-produced TH and ATH550 models are existing designs. IP55 is the upper cover 1 design involved in this application. Under the pressure of 21.3MPa of R410A refrigerant, the stress is compared. Red indicates the highest stress, and blue indicates the lowest stress. IP55 has the lowest structural stress value, which means it has the best pressure resistance.

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

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

[0065] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. The upper cover of the compressor, characterized in that, include: A flat portion (100) is provided, which forms a first mounting position and a second mounting position. The first mounting position is used to install a terminal block (2), and the second mounting position is used to install an exhaust pipe (3). A recess (200) is recessed into the compressor in a first direction (X) relative to the flat portion (100). A plurality of recesses (200) are provided. The plurality of recesses (200) are formed on the circumferential edge of the upper end cover (1) in a fan-shaped area with a central angle of less than 245°. The plurality of recesses (200) are arranged at intervals around a first axis. Two recesses (200) are connected by the flat portion (100).

2. The upper end cover of the compressor according to claim 1, characterized in that, In the first direction (X), the height difference ΔH between the recess (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 10mm≤L.

4. The upper end cover of the compressor according to claim 1, characterized in that, The flat part (100) is provided with a flange structure (111) at the first mounting position for mounting the terminal (2). In the first direction (X), the 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 edges are provided with rounded chamfers (300°).

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

7. The upper end cover of the compressor according to claim 1, characterized in that, The first mounting position is provided with a plurality of studs (112), which are located on the periphery of the terminal block (2) for fixing the junction box (5) and the gasket (6).

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

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

10. A compressor, characterized in that, Includes the upper end cover (1) of the compressor as described in any one of claims 1-9.

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