End cap and compressor having the same

Abstract

The application provides an end cover and a compressor with the same. The end cover comprises an end cover body with an oil collecting cavity, a blocking structure is arranged in the oil collecting cavity, the blocking structure has a containing groove, a magnetic adsorption member is arranged in the containing groove, and the opening of the containing groove faces the flow direction of the lubricating oil when the lubricating oil is disturbed in the oil collecting cavity. According to the application, when the end cover is applied to the compressor, the end cover can become the lower end cover of the compressor. During the operation of the compressor, even if the lubricating oil in the oil collecting cavity is disturbed due to various reasons, since the opening of the containing groove of the blocking structure faces the flow direction of the lubricating oil when the lubricating oil is disturbed, the iron filings adsorbed on the magnetic adsorption member cannot wander along with the disturbance of the lubricating oil under the hindering effect of the containing groove. Meanwhile, the iron filings entering the containing groove under the disturbance cannot come out again, so that the problem that the iron filings wander due to the disturbance of the lubricating oil, are then sucked away by the oil pump and finally enter the pump body to cause the abrasion of the pump body is prevented.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of compressors, and particularly relates to an end cover and a compressor with the same. BACKGROUND

[0002] The crankshaft of the scroll compressor absorbs lubricating oil from the oil pump, part of which enters the back pressure chamber, and then enters the pump body from the back pressure chamber, i.e. the dynamic and static scroll, for lubrication to ensure normal operation of the compressor. Another part of the lubricating oil is returned to the bottom oil pool of the compressor through the oil return pipe after completing bearing lubrication to circulate. Due to the influence of processing technology and operating conditions, some small iron filings will be generated during the actual assembly and operation of the compressor. In order to prevent these iron filings from entering the pump body and causing wear of the pump body, a magnet is generally placed at the bottom of the lower end cover to absorb the iron filings. However, during the actual operation of the compressor, the impact of the oil return pipe on the bottom and the impact of the compressor exhaust on the oil surface, as well as the influence of the oil pump on oil absorption, cause the lubricating oil in the bottom oil pool of the compressor to be disturbed as shown in the drawing. At this time, the iron filings absorbed on the magnet are easily washed away and then sucked into the pump body by the oil pump, causing wear of the pump body. Figure 5 SUMMARY

[0003] Therefore, the present application provides an end cover which can overcome the problem that the lubricating oil in the bottom oil pool of the compressor is disturbed during the actual operation of the compressor, causing the iron filings absorbed on the magnet to be easily washed away, and these washed away iron filings are then sucked into the pump body by the oil pump, finally causing wear of the pump body.

[0004] In order to solve the above problems, the present application provides an end cover, comprising: an end cover body, the end cover body having an oil collecting cavity, a blocking structure is arranged in the oil collecting cavity, the blocking structure has a containing groove, a magnetic absorbing member is arranged in the containing groove, and the opening of the containing groove faces the flow direction of the lubricating oil when it is disturbed in the oil collecting cavity.

[0005] In some embodiments, one end of the blocking structure is connected to the inner surface of the oil collecting cavity, the other end of the blocking structure is a free end, and the containing groove is formed between the blocking structure and the inner surface of the oil collecting cavity.

[0006] In some embodiments, the containing space of the containing groove gradually decreases from the opening of the containing groove to the bottom of the containing groove.

[0007] ​In some embodiments, the blocking structure has a blocking part, the blocking part is strip-shaped, one end of the blocking part is the free end, the blocking part has a first side face facing away from the containing groove, a plane in which any cross section of the end cover body lies is a reference plane, a projection of the first side face in the reference plane is a first line segment, a projection of an inner surface of the oil collecting cavity in the reference plane is a first circle, an extension line of the first line segment intersects the first circle at point A, an included angle a between the first line segment and a tangent line passing through the point A is 30°≤a≤50°.

[0008] In some embodiments, the blocking structure further has a reinforcing part, the blocking part is connected to the inner surface of the oil collecting cavity through the reinforcing part, the reinforcing part gradually increases in size from a side where the reinforcing part is connected to the blocking part to another side where the reinforcing part is connected to the inner surface of the oil collecting cavity.

[0009] In some embodiments, the reinforcing part has a first arc-shaped face connected to the first side face, the first arc-shaped face protrudes towards the side where the reinforcing part is connected to the blocking part.

[0010] In some embodiments, the reinforcing part further has a second arc-shaped face, a curvature of the second arc-shaped face is the same as a curvature of the inner surface of the oil collecting cavity, the reinforcing part is connected to the inner surface of the oil collecting cavity through the second arc-shaped face.

[0011] In some embodiments, the number of the blocking structures is multiple, and each of the blocking structures is spaced apart along the inner surface of the oil collecting cavity.

[0012] In some embodiments, the magnetic accessory is configured with an operation groove for taking the magnetic accessory.

[0013] The application further provides a compressor comprising the end cover.

[0014] The application provides an end cover and a compressor comprising the same. When the end cover is applied to the compressor, it can be installed at the bottom of the compressor, and the lubricating oil in the compressor is collected in the oil collecting cavity of the end cover body, thereby forming an oil pool. During the operation of the compressor, even if the lubricating oil in the oil collecting cavity is disturbed due to various reasons, since the opening of the containing groove of the blocking structure faces the flow direction of the lubricating oil when it is disturbed, the iron filings adsorbed on the magnetic accessory will not wander with the disturbance of the lubricating oil under the hindering effect of the containing groove. At the same time, the iron filings entering the containing groove under the disturbance will not come out again, thus preventing the problem of iron filings wandering due to the disturbance of the lubricating oil, then being sucked away by the oil pump, and finally entering the pump body to cause wear of the pump body from occurring in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Figure 1 is a top view of an end cover and a foot assembled together according to an embodiment of the present application;

[0016] Figure 2 Figure 2 is an exploded schematic view of a combination formed by an end cover and a foot according to an embodiment of the present application;

[0017] Figure 3 Figure 3 is a sectional view of a magnet inside an end cover according to an embodiment of the present application;

[0018] Figure 4 Figure 4 is a sectional view of a compressor according to an embodiment of the present application;

[0019] Figure 5 Figure 5 is a top view of a lower end cover according to the prior art.

[0020] The reference signs are as follows:

[0021] 1. end cover body; 2. oil collecting cavity; 3. blocking structure; 31. blocking part; 32. first side surface; 33. reinforcing part; 34. first arc surface; 4. magnetically attractive accessory; 5. iron filings; 6. suction pipe; 7. upper end cover; 8. stationary scroll; 9. movable scroll; 10. motor; 11. auxiliary balance weight; 12. housing; 13. lower support; 14. foot; 15. foot pad; 16. oil pump; 17. oil return pipe; 18. crankshaft; 19. main balance weight; 20. upper support. DETAILED DESCRIPTION

[0022] For reference Figures 1 to 5 As shown, according to an embodiment of the present application, an end cover is provided, comprising: an end cover body 1, the end cover body 1 having an oil collecting cavity 2, a blocking structure 3 being arranged in the oil collecting cavity 2, the blocking structure 3 having a receiving groove, a magnetically attractive accessory 4 being arranged in the receiving groove, and an opening of the receiving groove facing a flow direction of lubricating oil when the lubricating oil is disturbed in the oil collecting cavity 2. In this technical solution, when the end cover of the present application is applied to a compressor, it can be installed at a bottom of the compressor, and lubricating oil in the compressor is collected in the oil collecting cavity 2 of the end cover body 1, thereby forming an oil pool. During operation of the compressor, even if the lubricating oil in the oil collecting cavity 2 is disturbed due to various reasons, since the opening of the receiving groove of the blocking structure 3 faces the flow direction of the lubricating oil when the lubricating oil is disturbed, the iron filings 5 adsorbed on the magnetically attractive accessory 4 will not wander along with the disturbance of the lubricating oil under the hindering action of the receiving groove. Meanwhile, the iron filings 5 entering the receiving groove under the disturbance will not come out again, thus preventing the problem of the iron filings 5 wandering due to disturbance of the lubricating oil, being sucked away by the oil pump, and finally entering the pump body to cause abrasion of the pump body from occurring in the prior art. The magnetically attractive accessory 4 can be a magnet.

[0023] For reference Figure 1As shown, in addition to directly constructing the accommodating groove on the blocking structure 3, the blocking structure 3 can also be simply designed, one end of which is connected with the inner surface of the oil collecting cavity 2, and the other end is a free end, so that the accommodating groove is formed between the blocking structure 3 and the inner surface of the oil collecting cavity 2. Moreover, under the disturbance of the lubricating oil, the iron filings 5 will also be thrown close to the inner surface of the oil collecting cavity 2, so that the magnetic attraction member 4 in the accommodating groove is easy to capture and adsorb the iron filings 5.

[0024] Preferably, the accommodating space of the accommodating groove gradually decreases from the opening of the accommodating groove to the bottom of the accommodating groove. In this way, the accommodating groove is structured as an opening large and a bottom small, so that the iron filings 5 are easy to enter the accommodating groove and gather, but not easy to be washed away by the disturbance of the lubricating oil, further reducing the possibility of the iron filings 5 being sucked into the oil pump.

[0025] For reference Figure 1 As shown, the blocking structure 3 has a blocking part 31, the blocking part 31 is strip-shaped, one end of the blocking part 31 is a free end, the blocking part 31 has a first side face 32 away from the accommodating groove, the plane where any cross section of the end cover body 1 is located is a reference face, the projection of the first side face 32 in the reference face is a first line segment, the projection of the inner surface of the oil collecting cavity 2 in the reference face is a first circle, the extension line of the first line segment intersects with the first circle at point A, the included angle a between the first line segment and the tangent passing through point A is formed, when 30°≤a≤50°, the accommodating groove is the best for the iron filings 5 to enter and the iron filings 5 entering the accommodating groove not to be easily washed away under the disturbance of the lubricating oil.

[0026] As a specific embodiment, the blocking structure 3 also has a reinforcing part 33, the blocking part 31 is connected with the inner surface of the oil collecting cavity 2 through the reinforcing part 33, and the reinforcing part 33 gradually increases from the side where the reinforcing part 33 and the blocking part 31 are connected to the side where the reinforcing part 33 and the inner surface of the oil collecting cavity 2 are connected. Under the disturbance of the lubricating oil, the blocking structure 3 will withstand impact force for a long time, and the connection between the blocking structure 3 and the inner surface of the oil collecting cavity 2 will be a stress concentration area. When the reinforcing part 33 of the blocking structure 3 is a structure with gradually increasing volume, the contact area between the blocking structure 3 and the inner surface of the oil collecting cavity 2 is larger, the connection between them is more firm, and the blocking structure 3 can withstand greater and more persistent impact force.

[0027] For reference Figure 1 As shown, the reinforcing part 33 has a first arc face 34 connected with the first side face 32, and the first arc face 34 protrudes towards the side where the reinforcing part 33 and the inner surface of the oil collecting cavity 2 are connected. It is equivalent to rounding the side of the reinforcing part 33 away from the accommodating groove, so as to further increase the contact area when the reinforcing part 33 is connected with the inner surface of the oil collecting cavity 2, and further enhance the firmness of the connection between the blocking structure 3 and the inner surface of the oil collecting cavity 2.

[0028] For reference Figure 1 As shown in the figure, the reinforcing part 33 also has a second arc surface, the curvature of the second arc surface is the same as the curvature of the inner surface of the oil collecting cavity 2, and the reinforcing part 33 is connected with the inner surface of the oil collecting cavity 2 through the second arc surface. The connecting part between the blocking structure 3 and the inner surface of the oil collecting cavity 2 is tightly fitted, and the firmness when the two are connected together is further enhanced. Among them, the blocking structure 3 can be welded on the inner surface of the oil collecting cavity 2.

[0029] In this embodiment, the number of the blocking structure 3 is multiple, and each blocking structure 3 is uniformly distributed along the inner surface of the oil collecting cavity 2, so that the iron filings 5 at each position in the oil collecting cavity 2 can be timely adsorbed by the magnetic adsorption accessory 4 and will not be washed away under the disturbance of the lubricating oil.

[0030] For reference Figures 1 to 3 As shown in the figure, the magnetic adsorption accessory 4 is configured with an operation groove for taking the magnetic adsorption accessory 4. When the magnetic adsorption accessory 4 adsorbs more iron filings 5, the magnetic adsorption accessory 4 needs to be taken out and the iron filings 5 on it need to be cleaned. The configuration of the operation groove makes it more convenient to take the magnetic adsorption accessory 4. For example, one finger can be inserted into the operation groove, and the other finger can pinch the outer peripheral wall of the magnetic adsorption accessory 4 to easily take out the magnetic adsorption accessory 4.

[0031] The application also provides a compressor comprising the above-mentioned end cover.

[0032] Those skilled in the art can easily understand that the above-mentioned advantageous modes can be freely combined and superimposed without conflict.

[0033] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only a preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. An end cap characterized by, The end cover body (1) has an oil collecting cavity (2) in which a blocking structure (3) is arranged, the blocking structure (3) has a containing groove in which a magnetic attraction member (4) is arranged, and the opening of the containing groove faces the flow direction of the lubricating oil disturbed in the oil collecting cavity (2); The blocking structure (3) has a blocking part (31) in the shape of a strip, one end of the blocking part (31) is a free end, the blocking part (31) has a first side face (32) facing away from the containing groove, the plane of any cross section of the end cover body (1) is a reference plane, the projection of the first side face (32) in the reference plane is a first line segment, the projection of the inner surface of the oil collecting cavity (2) in the reference plane is a first circle, the extension line of the first line segment intersects with the first circle at point A, the included angle between the first line segment and the tangent line passing through the point A is a, and 30°≤a≤50°.

2. The end cap of claim 1, wherein One end of the blocking structure (3) is connected with the inner surface of the oil collecting cavity (2), and the other end of the blocking structure (3) is a free end, and the containing groove is formed between the blocking structure (3) and the inner surface of the oil collecting cavity (2).

3. The end cap of claim 1, wherein The containing space of the containing groove gradually decreases from the opening of the containing groove to the bottom of the containing groove.

4. The end cap of claim 1, wherein The blocking structure (3) further has a reinforcing part (33), the blocking part (31) is connected with the inner surface of the oil collecting cavity (2) through the reinforcing part (33), and the reinforcing part (33) gradually increases in the direction from one side of the reinforcing part (33) connected with the blocking part (31) to the other side of the reinforcing part (33) connected with the inner surface of the oil collecting cavity (2).

5. The end cap of claim 4, wherein, The reinforcing part (33) has a first arc face (34) connected with the first side face (32), and the first arc face (34) protrudes towards the side of the reinforcing part (33) connected with the inner surface of the oil collecting cavity (2).

6. The end cap of claim 4, wherein, The reinforcing part (33) further has a second arc face, the curvature of the second arc face is the same as that of the inner surface of the oil collecting cavity (2), and the reinforcing part (33) is connected with the inner surface of the oil collecting cavity (2) through the second arc face.

7. The end cap of claim 1, wherein The number of the blocking structures (3) is multiple, and each blocking structure (3) is distributed at intervals along the inner surface of the oil collecting cavity (2).

8. The end cap of claim 1, wherein, An operation groove is formed on the magnetic attraction member (4) for taking the magnetic attraction member (4).

9. A compressor characterized by, The end cover comprises the end cover body according to any one of claims 1 to 8.

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