CN218493822U - Electric scroll compressor with oil return lubricating mechanism - Google Patents

Abstract

The utility model belongs to the technical field of scroll compressor equipment, a electronic scroll compressor with oil return lubrication mechanism is related to, including installing the quiet vortex dish that covers at the back to and with quiet vortex dish intermeshing's the vortex dish that moves, back lid exhaust passage department is equipped with the oil separator, the below of oil separator is equipped with the oil storage storehouse, be equipped with the oil return passageway with the oil storage storehouse intercommunication on the quiet vortex dish to and oil gallery and the oil return through-hole of being connected with oil return passageway, quiet vortex dish suction opening department still is equipped with main oil return opening and supplementary oil return opening. The utility model discloses a set up oil return lubrication mechanism and separate out the refrigeration oil earlier through oil separator from high temperature high-pressure gas, inside rethread return channel guided oil flow back to compression chamber, guarantee that inside lubricated oil mass is sufficient, avoid moving, quiet vortex dish because of lacking oil unusual wearing and tearing appear, avoid the back pressure chamber to lead to the refrigerant to let out leakage increase because of lacking oil causes the back pressure not enough, can effectively improve the life and the performance of compressor.

Description

Electric scroll compressor with oil return lubricating mechanism

Technical Field

The utility model belongs to the technical field of scroll compressor equipment, concretely relates to electronic scroll compressor with oil return lubrication mechanism.

Background

With the rapid development of electric automobiles, the electric scroll compressor also meets huge development space and opportunity in automobile air-conditioning systems. The electric vortex compressor belongs to a new type positive displacement compressor, and is a totally-enclosed structure directly driven by motor, and no longer adopts semi-enclosed belt pulley structure. The electric scroll compressor has the characteristics of small volume, light weight, high efficiency, easy automation realization and stepless speed change, and can automatically adjust the refrigerating capacity of the automobile air conditioning system according to the change of the temperature in the automobile.

The electric scroll compressor has a core part for compressing refrigerant, which is composed of a movable scroll and a fixed scroll. The permanent magnet brushless direct current motor drives the main shaft to drive the movable scroll to do rotary motion with fixed radius around the fixed scroll under the constraint of the autorotation prevention mechanism through the eccentric balance weight, and the volume of a closed crescent-shaped working cavity formed by the mutual meshing of the movable scroll and the fixed scroll is continuously changed from large to small, so that the working processes of air suction, compression and exhaust are realized.

The refrigeration oil plays the key role of cooling, sealing and lubricating in the working process of the electric scroll compressor, and the refrigeration oil in the compressor can be taken away when high-temperature and high-pressure refrigerant gas formed by compression flows. Because among the prior art, electric scroll compressor does not set up oil return lubrication mechanism, consequently constantly takes away the refrigeration oil from blast pipe exhaust high temperature high pressure gas, causes the lubricated oil mass of staying in the compression chamber too little to actuation, quiet scroll meshing wearing and tearing aggravation, backpressure oil circuit oil mass is too little simultaneously, can not provide sufficient back pressure and come the balanced axial gas power, the increase of the axial refrigerant leakage of scroll, make compressor life and performance reduce.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the problem that constantly takes the inside refrigeration oil of compressor out when high temperature high pressure refrigerant gas flows among the prior art, a scheme of design is advanced, and the effect is obvious, can improve the life of compressor and the electronic scroll compressor that has return oil lubrication mechanism of performance.

In order to achieve the above object, the utility model adopts the following technical scheme: the electric scroll compressor with the oil return lubricating mechanism comprises a fixed scroll disc and a movable scroll disc, wherein the fixed scroll disc is mounted on a rear cover, the movable scroll disc is meshed with the fixed scroll disc, an oil separator is arranged at an exhaust passage of the rear cover, an oil storage bin is arranged below the oil separator, an oil return passage communicated with the oil storage bin is arranged on the fixed scroll disc, an oil return groove and an oil return through hole are connected with the oil return passage, and a main oil return port and an auxiliary oil return port are further arranged at an air suction port of the fixed scroll disc.

Preferably, one side of the fixed scroll, which is far away from the rear cover, is provided with a front cover wear-resisting sheet for sealing the oil return groove and the oil return through hole.

Preferably, a filter screen is arranged at the joint of the oil storage bin and the oil return channel.

Preferably, the oil return passage is provided below the fixed scroll.

Preferably, the oil return groove and the oil return through hole are formed in a large end surface of the fixed scroll.

Preferably, the cross-sectional width of the oil return groove is smaller than that of the oil return channel.

Preferably, the oil return through hole is formed in the oil return groove, and the diameter of the oil return through hole is larger than the width of the cross section of the oil return groove.

After the technical scheme is adopted, the utility model provides a pair of electronic scroll compressor with oil return lubrication mechanism has following beneficial effect:

the utility model discloses a set up oil return lubrication mechanism and separate out the refrigeration oil earlier from high temperature high-pressure gas through oil separator, inside rethread return oil passageway leads to oil to flow back to compression chamber, guarantee that inside lubricated oil mass is sufficient, avoid moving, quiet vortex dish because of the unusual wearing and tearing appear in the lack of oil, avoid the back pressure chamber to lead to the refrigerant to let out the leakage increase because of lack of oil causes the back pressure not enough, it is advanced to have the scheme, and the effect is obvious, can effectively improve advantages such as the life and the performance of compressor.

Drawings

Fig. 1 is a schematic structural view of an electric scroll compressor with an oil return lubrication mechanism according to the present invention;

fig. 2 is a schematic structural diagram of the middle front cover wear pad of the present invention.

Wherein: the oil separator comprises a rear cover 1, a fixed scroll 2, a movable scroll 3, an oil separator 4, an oil storage bin 5, an oil return channel 6, an oil return groove 7, an oil return through hole 8, a main oil return port 9, an auxiliary oil return port 10, a front cover wear-resistant piece 11 and a filter screen 12.

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The utility model relates to an electronic scroll compressor with oil return lubrication mechanism, as shown in fig. 1-2, including installing the quiet vortex dish 2 on lid 1 behind to and with quiet vortex dish 2 intermeshing's the vortex dish 3 that moves, lid 1 exhaust passage department is equipped with oil separator 4 behind, the below of oil separator 4 is equipped with oil storage storehouse 5, be equipped with the oil return passageway 6 with oil storage storehouse 5 intercommunication on the quiet vortex dish 2 to and oil gallery 7 and the oil return through-hole 8 of being connected with oil return passageway 6, 2 suction opening departments of quiet vortex dish still are equipped with main oil return opening 9 and supplementary oil return opening 10.

The front cover wear-resisting piece 11 used for sealing the oil return groove 7 and the oil return through hole 8 is arranged on one side, far away from the rear cover 1, of the fixed scroll 2, a filter screen 12 is arranged at the joint of the oil storage bin 5 and the oil return channel 6 and plays a role in filtering impurities in the refrigeration oil, the oil return channel 6 is arranged below the fixed scroll 2, the oil return groove 7 and the oil return through hole 8 are arranged on the large end face of the fixed scroll 2, the section width of the oil return groove 7 is smaller than that of the oil return channel 6, the oil return through hole 8 is arranged on the oil return groove 7, and the diameter of the oil return through hole 8 is larger than that of the oil return groove 7.

The utility model relates to an electronic scroll compressor during operation with oil return lubrication mechanism, refrigerant gas is inhaled from 2 induction ports of static scroll, then compressed, flow out from 2 gas vents of static scroll at last, the highly compressed refrigerant gas of high temperature takes the refrigeration oil to get into together in the 1 air discharge passage of back lid, the refrigeration oil is separated out from the highly compressed refrigerant gas of high temperature under the effect of oil separator 4, flow into under the effect of self gravity in the oil storage bin 3 of back lid 1 below, the refrigeration oil filters the back through filter screen 12, in the oil return passage 6 of being impressed earlier under the effect of pressure differential, then flow into in the oil return groove 7 that the cross-section narrows, the refrigeration oil velocity of flow is accelerated, get into the runner at the 2 backs of static scroll after the oil return through-hole 8 atomizing of cross-section grow, the refrigeration oil that is atomized gets into through main oil return opening 9 and supplementary oil return opening 10, the compression working chamber of static scroll, thereby realize the oil spout lubrication who lasts to it, finally avoid moving, the static scroll is because of avoiding the unusual wearing and tearing because of the refrigerant volume that the back pressure caused simultaneously, the increase of leakage performance and the effective leakage that has improved.

To sum up, the utility model provides a pair of electronic scroll compressor with oil return lubrication mechanism, the scheme is advanced, and the effect is obvious, can effectively improve the life and the performance of compressor, has very big market value, is worth extensively popularizing and applying.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims (7)

1. An electric scroll compressor with an oil return lubrication mechanism, comprising a fixed scroll (2) mounted on a back cover (1), and a movable scroll (3) intermeshing with the fixed scroll (2), characterized in that: the oil separator is characterized in that an oil separator (4) is arranged at the exhaust passage of the rear cover (1), an oil storage bin (5) is arranged below the oil separator (4), an oil return passage (6) communicated with the oil storage bin (5) is arranged on the static scroll (2), an oil return groove (7) and an oil return through hole (8) are connected with the oil return passage (6), and a main oil return opening (9) and an auxiliary oil return opening (10) are further arranged at the air suction opening of the static scroll (2).

2. An electric scroll compressor with oil return lubrication mechanism as claimed in claim 1, wherein: and a front cover wear-resisting sheet (11) for sealing the oil return groove (7) and the oil return through hole (8) is arranged on one side of the fixed scroll (2) far away from the rear cover (1).

3. An electric scroll compressor with oil return lubrication mechanism as claimed in claim 1, wherein: and a filter screen (12) is arranged at the joint of the oil storage bin (5) and the oil return channel (6).

4. An electric scroll compressor having an oil return lubrication mechanism as claimed in claim 1, wherein: the oil return passage (6) is arranged below the fixed scroll (2).

5. An electric scroll compressor having an oil return lubrication mechanism as claimed in claim 1, wherein: the oil return groove (7) and the oil return through hole (8) are arranged on the large end face of the fixed scroll (2).

6. An electric scroll compressor having an oil return lubrication mechanism as claimed in claim 1, wherein: the cross section width of the oil return groove (7) is smaller than that of the oil return channel (6).

7. An electric scroll compressor with oil return lubrication mechanism as claimed in claim 1, wherein: the oil return through hole (8) is formed in the oil return groove (7), and the diameter of the oil return through hole (8) is larger than the width of the cross section of the oil return groove (7).

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