Electric compressor oil return device for new energy automobile

Abstract

The utility model provides an electric compressor oil return device for a new energy automobile, which comprises the following structures: an end cover, the bottom of which is fixedly provided with a first oil return channel; a second oil return channel is fixedly arranged on the outer side of the sealing gasket; the side, facing the sealing gasket, of the static disc is a plane, a clearance is formed between the static disc and the end cover, and in consideration of the design that the end cover and the static disc wrap and clamp the outer side of the sealing gasket, compared with a current stepped end face design, a large clearance exists between the static disc and the sealing gasket. The situation that the sealing washer cannot work normally due to deformation of the sealing washer and blockage of metal scraps is effectively avoided, and the technical problems that due to the fact that an existing device adopts design matching of a stepped end face and the sealing washer, blockage of impurities and deformation of the sealing washer are prone to occurring are solved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of compressors, and in particular to an oil return device for an electric compressor used in new energy vehicles. Background Art

[0002] A sealing gasket and a corresponding oil circuit need to be arranged between the stator and the end cover of the electric compressor. In the prior art, a stepped surface is provided on the stator, and the sealing gasket is assembled on the stepped surface for oil passing through in an offset manner. There is a gap between the sealing gasket and the stepped surface, and impurities such as metal debris are easily accumulated in the gap, which affects the oil passing gap between the sealing gasket and the stator, resulting in the sealing gasket being unable to pass through oil normally afterwards.

[0003] The inventor proposes an oil return device for an electric compressor for new energy vehicles. In the device, a plane at the stator plate facing the end cover is arranged flat, an oil hole is punched on the sealing gasket, and the sealing gasket is fitted between the stator plate and the end cover to avoid a large gap between the stator plate and the end cover of the existing stepped end face, which may cause impurities such as metal debris to accumulate between the sealing gaskets or deformation of the sealing gaskets. Utility Model Content

[0004] 1. Technical problems solved by the utility model:

[0005] The utility model provides an oil return device for an electric compressor of a new energy vehicle, which solves the technical problem that the existing equipment adopts a design combination of a stepped end face and a sealing gasket, which is prone to impurity jamming and sealing gasket deformation.

[0006] 2. Technical solution:

[0007] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is: an oil return device for an electric compressor for a new energy vehicle, comprising the following structure:

[0008] The end cover has a first oil return channel fixedly disposed at the bottom thereof.

[0009] A sealing gasket, the outer side of which is fixedly provided with a second oil return channel.

[0010] The static disk has a flat surface on one side facing the sealing gasket, and a clearance is formed between the static disk and the end cover.

[0011] Furthermore, the area formed by assembling the end cover and the stator disk is a high-pressure cavity, and the area formed by assembling the end cover and the sealing gasket is a second cavity, and the second cavity cooperates with the first oil return channel.

[0012] Furthermore, the front and rear parts of the sealing gasket are respectively fitted with the rear side of the end cover and the front side of the stator disk, and the sealing gasket fills the outer assembly gap between the end cover and the stator disk.

[0013] Furthermore, the bottom of the second oil return channel extends to the bottom of the inner wall of the end cover, and the second oil return channel cooperates with the first oil return channel.

[0014] Furthermore, an oil return hole penetrating through the front and rear ends of the static plate is fixedly provided on the outer side of the static plate, and the oil return hole cooperates with the second oil return channel. A dynamic plate is provided at the rear end of the static plate.

[0015] 3. Beneficial effects:

[0016] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0017] The utility model provides an oil return device for an electric compressor for a new energy vehicle. Considering the clamping assembly design of the end cover and the stator plate on the outer side of the sealing gasket, there is a larger gap between the stator plate and the sealing gasket compared with the current stepped end face design, which effectively avoids the deformation of the sealing gasket and the jamming of metal debris, which causes the sealing gasket to fail to work normally.

[0018] The utility model provides an oil return device for an electric compressor for a new energy vehicle. Considering that after the stator plate and the end cover are assembled, the sealing gasket completes the connection and sealing of the stator plate and the end cover to improve the sealing performance, there is no need to process the stepped end face on the stator plate, simplifying the processing size of the stator plate, avoiding metal debris generated when the equipment is running from being stuck between the stator plate, the sealing gasket and the end cover, resulting in the inability of the existing products with misaligned stepped end faces to pass oil normally, wherein the sealing gasket can be made of stamped parts and coated with hydrogenated nitrile rubber to reduce production costs;

[0019] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0021] Figure 2 It is a half-section stereogram of the structure of the utility model;

[0022] Figure 3 It is an enlarged view of the structure of the utility model;

[0023] Figure 4 It is an exploded view of the structure of the utility model;

[0024] Figure 5 It is an exploded view of the structure of the utility model.

[0025] Reference numerals:

[0026] End cover-1; first oil return channel-11;

[0027] Sealing gasket-2; second oil return channel-21;

[0028] Stator plate-3; Clearance-31; Oil return hole-32;

[0029] High pressure chamber-4;

[0030] Second cavity - 5;

[0031] Moving disk-6. DETAILED DESCRIPTION

[0032] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0033] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element; when an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a central element; the terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] See attached Figure 1-5 The utility model provides an oil return device for an electric compressor of a new energy vehicle, comprising the following structure:

[0036] The end cover 1 has a first oil return channel 11 fixedly disposed at the bottom thereof.

[0037] The sealing gasket 2 has a second oil return passage 21 fixedly disposed on its outer side.

[0038] The stator plate 3 has a flat surface on one side facing the sealing gasket 2 , and a clearance 31 is formed between the stator plate 3 and the end cover 1 .

[0039] In this embodiment, Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the area formed by assembling the end cover 1 and the stator plate 3 is the high-pressure cavity 4 , and the area formed by assembling the end cover 1 and the sealing gasket 2 is the second cavity 5 , and the second cavity 5 cooperates with the first oil return channel 11 .

[0040] A high-pressure cavity 4 is provided between the stator plate 3 and the end cover 1 , and the refrigerant and cooling oil mixture compressed by the stator plate 3 is transported to the high-pressure cavity 4 .

[0041] The first oil return channel 11 on the end cover 1 is arranged at its bottom, and cooperates with the gap 31 left after the stator plate 3 and the end cover 1 are assembled, so that the gas-liquid mixture in the high-pressure wall can enter the second cavity 5 through the gap 31. The gas-liquid mixture in the second cavity 5 gathers at the bottom of the end cover 1 and enters the first oil return channel 11.

[0042] In this embodiment, Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the front and rear parts of the sealing gasket 2 are respectively fitted with the rear side of the end cover 1 and the front side of the stator disk 3 , and the sealing gasket 2 fills the outer assembly gap between the end cover 1 and the stator disk 3 .

[0043] The side of the stator plate 3 facing the end cover 1 is a flat structure, not a stepped end face as in the existing equipment. The sealing gasket 2 is arranged between the end cover 1 and the stator plate 3. The oil return hole 32 on the stator plate 3 and the second cavity 5 are connected through the second oil return channel 21 arranged on the sealing gasket 2. The gas-liquid mixture collected in the first oil return channel 11 below the end cover 1 returns to the compressor through the second oil return channel 21 and the oil return hole 32.

[0044] Taking into account that after the stator disc 3 and the end cover 1 are assembled, the sealing gasket 2 completes the connection sealing improvement between the stator disc 3 and the end cover 1, there is no need to process the stepped end face on the stator disc 3, which simplifies the processing size of the stator disc 3 and avoids metal debris generated during the operation of the equipment from being stuck between the stator disc 3, the sealing gasket 2 and the end cover 1, resulting in the inability of existing products with misaligned stepped end faces to pass oil normally. The sealing gasket 2 can be made of stamped parts and coated with hydrogenated nitrile rubber to reduce production costs.

[0045] Taking into account the assembly design of the end cover 1 and the stator disk 3 clamping the outside of the sealing gasket 2, there is a larger gap between the stator disk 3 and the sealing gasket 2 compared with the current stepped end face design, which effectively avoids the deformation of the sealing gasket 2 and the jamming of metal debris that causes the sealing gasket 2 to fail to work normally.

[0046] In this embodiment, Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the bottom of the second oil return channel 21 extends to the bottom of the inner wall of the end cover 1 , and the second oil return channel 21 cooperates with the first oil return channel 11 .

[0047] The second oil return channel 21 cooperates with the first oil return channel 11 to complete the return of the gas-liquid mixture in the second cavity 5 of the end cover 1 to the static plate 3 .

[0048] In this embodiment, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the outer side of the static plate 3 is fixedly provided with an oil return hole 32 penetrating the front and rear ends thereof, and the oil return hole 32 cooperates with the second oil return channel 21 . The rear end of the static plate 3 is provided with a moving plate 6 .

[0049] The oil return hole 32 cooperates with the second oil return channel 21 to guide the gas-liquid mixture to the stator plate 3 .

[0050] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. An oil return device for an electric compressor for a new energy vehicle, characterized in that: Includes the following structure: An end cover (1), wherein a first oil return channel (11) is fixedly provided at the bottom of the end cover (1); A sealing gasket (2), wherein a second oil return passage (21) is fixedly provided on the outer side of the sealing gasket (2); A stator disk (3), wherein a side of the stator disk (3) facing the sealing gasket (2) is a plane, and a clearance (31) is formed between the stator disk (3) and the end cover (1).

2. The oil return device for an electric compressor for a new energy vehicle according to claim 1, characterized in that: The area formed by assembling the end cover (1) and the stator disk (3) is a high-pressure cavity (4), and the area formed by assembling the end cover (1) and the sealing gasket (2) is a second cavity (5), and the second cavity (5) cooperates with the first oil return channel (11).

3. The oil return device for an electric compressor for a new energy vehicle according to claim 1, characterized in that: The front and rear parts of the sealing gasket (2) are respectively fitted with the rear side of the end cover (1) and the front side of the stator disk (3), and the sealing gasket (2) fills the outer assembly gap between the end cover (1) and the stator disk (3).

4. The oil return device for an electric compressor for a new energy vehicle according to claim 1, characterized in that: The bottom of the second oil return channel (21) extends to the bottom of the inner wall of the end cover (1), and the second oil return channel (21) cooperates with the first oil return channel (11).

5. The oil return device for an electric compressor for a new energy vehicle according to claim 1, characterized in that: An oil return hole (32) penetrating the front and rear ends of the static disk (3) is fixedly provided on the outer side of the static disk (3), and the oil return hole (32) cooperates with the second oil return channel (21). A moving disk (6) is provided at the rear end of the static disk (3).

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