CN212454815U - Scroll compressor having a plurality of scroll members - Google Patents

Abstract

A scroll compressor includes a housing and a motor assembly, a fixed scroll, an orbiting scroll and a face plate mounted within the housing. The fixed scroll comprises a fixed disc and a fixed scroll tooth arranged on one side of the fixed disc. The static disc is provided with at least one oil return hole, and a throttle valve with a filter screen is inserted into each oil return hole. The utility model discloses a choke valve that has the filter screen is inserted in the oil return hole on the quiet dish of scroll compressor, on the one hand, can control the fluidic flow through changing the throttle area or the throttle length of choke valve to play the effect of pressure buffering to the fluid, when the fluid flows in through the choke valve, the choke valve can hinder the operation of fluid to a certain extent thereby reduces the impact force; on the other hand, the filter screen of the throttle valve can filter oil stains in oil drops and impurities generated by rotating and wearing in the compressor, so that the oil stains and the impurities are prevented from damaging workpieces such as a static vortex tooth, a movable vortex disc and a motor assembly through an oil return hole.

Description

Scroll compressor having a plurality of scroll members

Technical Field

The utility model relates to a compressor technical field especially relates to a scroll compressor.

Background

Under the conditions of increasingly reduced energy sources and increasingly serious environmental pollution, new energy automobiles are greatly supported by the nation due to the characteristics of environmental protection and energy conservation. The electric compressor has very important function as an important component of a new energy automobile. As a core component of a new energy automobile air conditioning system, the electric compressor plays no role in replacement. The performance, vibration noise, reliability, sealing property, etc. of the motor-driven compressor are important factors affecting the operation thereof.

The scroll compressor is a positive displacement compressor, and has the advantages of small volume, low noise, light weight, small vibration, small energy consumption, long service life, continuous and stable gas transmission, reliable operation, clean gas source and the like, and is praised as a 'new and innovative compressor' and a 'maintenance-free compressor', and is an ideal power source of a pneumatic machine and the like. The compression component of the scroll compressor consists of an orbiting scroll and a non-orbiting scroll, wherein the orbiting scroll is arranged on the orbiting plate, and the non-orbiting scroll is arranged on the static plate. The oil return hole is arranged on the static disc of the existing scroll compressor, the filter screen which is processed by the metal wire meshes with different meshes is arranged in the oil return hole, the oil return hole in the prior art is generally an inclined hole, and therefore the part cost can be increased, the energy consumption of the compressor can be increased, and the performance of the compressor can be reduced.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a new scroll compressor to solve the above problems.

A scroll compressor comprises a shell, and a motor assembly, a static scroll, a movable scroll and a disc chuck which are arranged in the shell, the fixed scroll disk is fixed on the shell, the movable scroll disk is arranged on the face disk and is opposite to the fixed scroll disk, the disc chuck is arranged on the motor assembly, the fixed scroll disc comprises a fixed disc and a fixed scroll tooth arranged on one side of the fixed disc, the movable scroll comprises a movable disc and a movable scroll wrap arranged on one side of the movable disc, the fixed scroll wrap and the movable scroll wrap are positioned between the fixed disc and the movable disc and rotate in opposite directions, the motor assembly is started, the motor assembly drives the face plate to rotate, the face plate drives the movable scroll plate to rotate, the fixed scroll teeth and the movable scroll teeth are matched to form a plurality of compression chambers, at least one oil return hole is formed in the fixed face plate, and a throttle valve is inserted into each oil return hole.

Preferably, the throttling valve is a throttling valve with an external screen.

Preferably, the throttle valve includes a filter portion, a head portion, and a throttle body disposed in the filter portion and the head portion, and the filter portion includes an external filter screen covering the exterior of the throttle body.

Preferably, the oil return hole comprises a first through hole far away from the movable disc and a second through hole communicated with the first through hole, the filtering part is accommodated in the first through hole, and the head part is accommodated in the second through hole

Preferably, the throttle valve further comprises a filter screen sealing ring which is positioned between the filtering part and the head part and is sleeved on the throttle body, the filter screen sealing ring is accommodated in the first through hole, and the filter screen sealing ring is abutted against the hole wall of the first through hole.

Preferably, the aperture of the first through hole is larger than the aperture of the second through hole.

Preferably, the opening of the first through hole on the surface of the static disc is a first opening, the opening of the second through hole on the surface of the static disc is a second opening, the aperture of the first through hole is larger than that of the second through hole, and the second opening is opposite to the movable disc.

Preferably, the opening of the first through hole on the surface of the fixed disk is a first opening, the opening of the second through hole on the surface of the fixed disk is a second opening, and the second opening is opposite to the faceplate.

Preferably, the head comprises a sealing part, a butting part and a convex part which are connected in sequence, the sealing part is connected with the throttle body, the filter screen sealing ring is sleeved on the sealing part, the butting part butts against the connecting wall of the first through hole and the second through hole, and the convex part is accommodated in the second through hole.

Preferably, the throttling valve is a throttling valve with an internal screen.

The utility model discloses a choke valve that has the filter screen is inserted in the oil return hole on the quiet dish of scroll compressor, on the one hand, can control the fluidic flow through changing the throttle area or the throttle length of choke valve to play the effect of pressure buffering to the fluid, when the fluid flows in through the choke valve, the choke valve can hinder the operation of fluid to a certain extent thereby reduces the impact force; on the other hand, the filter screen of the throttle valve can filter oil stains in oil drops and impurities generated by rotating and wearing in the compressor, so that the oil stains and the impurities are prevented from damaging workpieces such as a static vortex tooth, a movable vortex disc and a motor assembly through the oil return hole. Furthermore, the utility model discloses an oil gallery is the straight hole, and for the inclined hole, the processing technology in straight hole is simple, can reduce manufacturing cost.

Drawings

Fig. 1 is a schematic view of a scroll compressor according to a preferred embodiment of the present invention.

FIG. 2 is a schematic view of the scroll compressor shown in FIG. 1 in another orientation.

FIG. 3 is an enlarged schematic view of section II of the scroll compressor shown in FIG. 2.

FIG. 4 is a schematic view of the orbiting and non-orbiting scroll mating of the scroll compressor shown in FIG. 1.

FIG. 5 is a schematic view of a throttle valve of the scroll compressor shown in FIG. 2.

Description of the main elements

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to fig. 1 to 5. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

In order to make those skilled in the art better understand the technical solution of the present invention, the following provides a detailed description of the product of the present invention with reference to the embodiments and the accompanying drawings.

Referring to fig. 1 to 3, a preferred embodiment of the present invention provides a scroll compressor 100 for use in a system requiring compressed air, such as an air conditioner. The scroll compressor 100 includes a housing 1, and a motor assembly 2, a fixed scroll 3, an orbiting scroll 4, and a disc chuck 5 installed in the housing 1. The fixed scroll 3 is fixed on the housing 1, the movable scroll 4 is installed on the face plate 5 and is arranged opposite to the fixed scroll 3, and the face plate 5 is installed on the motor assembly 2. When the motor assembly 2 is started, the disc chuck 5 is driven to rotate, and the disc chuck 5 rotates and simultaneously drives the movable scroll disk 4 to rotate, so that the fixed scroll disk 3 and the movable scroll disk 4 are matched to form a compression cavity.

The housing 1 includes a cylinder 11 and a front cover 12 and a rear cover 13 respectively installed at both ends of the cylinder 11. The cylinder 11, the front cover 12 and the rear cover 13 cooperate to form an accommodating space 14, and the motor assembly 2, the fixed scroll 3, the movable scroll 4 and the disc chuck 5 are accommodated in the accommodating space 14. The fixed scroll 3 is fixedly installed on the front cover 12.

The motor assembly 2 includes a stator 21, a rotor 22 installed in the stator 21, and an eccentric shaft 23 fixed to the rotor 22. The faceplate 5 is mounted on the end of the eccentric shaft 23 remote from the rotor 22. When the motor assembly 2 is started, the rotor 22 rotates in the stator 21, so as to drive the eccentric shaft 23 to rotate, the eccentric shaft 23 drives the disc chuck 5 to rotate while rotating, and the disc chuck 5 drives the movable scroll 4 to rotate while rotating, so that the fixed scroll 3 and the movable scroll 4 are matched to form a compression cavity.

The fixed scroll 3 includes a fixed disk 31 and a fixed wrap 32 provided on one side of the fixed disk 31. The orbiting scroll 4 includes a orbiting plate 41 and an orbiting wrap 42 provided on one side of the orbiting plate 41. The static disc 31 is fixedly installed on the front cover 12, and the movable disc 41 is installed on the faceplate 5 through an anti-rotation ring 51 and an anti-rotation pin 52. The fixed wrap 32 and the movable wrap 42 are located between the fixed disk 31 and the movable disk 41, the fixed wrap 32 and the movable wrap 42 rotate in opposite directions and can cooperate to form a plurality of compression chambers, specifically, as shown in fig. 4, when the fixed wrap 32 and the movable wrap 42 rotate relatively, the compression chambers 1A, 1B, 2A and 2B can be formed, and the compression chambers 1A, 1B, 2A and 2B dynamically change in the process of rotating the movable wrap 42. The stationary plate 31 is provided with at least one exhaust hole 33, and compressed air in the compression chambers 1A, 1B, 2A, 2B is compressed and then discharged from the exhaust hole 33.

A high-pressure chamber 311 is formed between the stationary disc 31 and the front cover 12. A low pressure chamber 312 is formed between the stationary disc 31 and the rear cover 13. The mixed gas of the system refrigerant and the refrigeration lubricant firstly enters the low pressure cavity 312, and after being compressed by the fixed scroll disk 3 and the movable scroll disk 4, the mixed gas with high temperature and high pressure enters the high pressure cavity 311. The mixed gas will form oil droplets in the high pressure chamber 311 and drop on the static disc 31.

The static disc 31 is provided with at least one oil return hole 34 for returning oil drops dropping on the static disc 31 in the high pressure cavity 311 to the low pressure cavity 312 for recycling, thereby reducing the loss of lubricating oil. The oil return hole 34 is a straight hole penetrating the stationary plate 31. The oil return hole 34 is a stepped hole, and the oil return hole 34 includes a first through hole 341 far from the movable plate 41 and a second through hole 342 communicating with the first through hole 341. The first through hole 341 has a larger diameter than the second through hole 342. The opening of the first through hole 341 on the surface of the stationary plate 31 is a first opening 3411, and the opening of the second through hole 342 on the surface of the stationary plate 31 is a second opening 3421, as shown in fig. 2, the second opening 3421 faces the movable plate 41, and oil droplets returning through the oil return hole 34 are returned to the movable plate 41.

It is understood that the arrangement of the oil return holes 34 is not limited to the manner shown in the drawings. In another embodiment (not shown), the second opening 3421 of the oil return hole 34 may be disposed opposite to the faceplate 5, and oil drops flowing back through the oil return hole 34 may be returned to the faceplate 5.

Referring to fig. 3 and 5, a throttle valve 35 is inserted into each oil return hole 34. In one embodiment, the throttle valve 35 has an external screen. The throttle valve 35 includes a filter portion 351, a head portion 352, a throttle body 353 inserted into the filter portion 351 and connected to the head portion, and a screen gasket 354 fitted over the head portion 352. The filtering portion 351 and the screen sealing ring 354 are accommodated in the first through hole 341 of the oil return hole 34, and the screen sealing ring 354 abuts against the hole wall of the first through hole 341. The head portion 352 includes a sealing portion 3521, a holding portion 3522, and a protrusion 3523, which are connected in series. The seal portion 3521 is in contact with the filter portion 351 and the throttle body 353, and the screen seal 354 is fitted over the seal portion 3521. The outer diameter of the abutting portion 3522 is larger than the outer diameter of the sealing portion 3521, and the abutting portion 3522 abuts against the connecting wall 3412 of the first through hole 341 and the second through hole 342. The protrusion 3523 is received in the second through hole 342. The filter unit 351 includes an external filter 3511 covering the throttle unit 353, and the external filter 3511 is used to filter oil in oil drops in the high-pressure chamber 311 and impurities generated by rotational wear in the compressor 100, so as to prevent the oil and the impurities from entering the low-pressure chamber 312 through the oil return hole 34, thereby preventing the oil and the impurities from damaging the work pieces such as the fixed scroll teeth 32, the movable scroll 4, the motor assembly 2, and the like in the low-pressure chamber 312. The seal ring 354 further prevents oil and contaminants from entering the low pressure chamber 312 through the second aperture 342. The body 353 can control the flow rate of the fluid (gas and lubricating oil) by changing the throttle area or the throttle length, so as to perform a pressure buffering function on the fluid, and when the fluid flows in through the throttle valve, the throttle valve 35 can hinder the operation of the fluid to a certain extent, so as to reduce the impact force.

It will be understood that the throttle 35 may also be a throttle with a filter screen inside, which is conventionally used, and correspondingly, the oil return hole 34 may be provided with a hole shape according to the shape of the throttle with the filter screen inside.

It will be appreciated that the choke 35 may be a conventional intelligent choke or an automatic choke with an internal screen or with an external screen to automatically adjust the flow of fluid through the choke 35.

It can be understood that an oil return track (not shown) may be further disposed on a side of the static disc 31 located in the high pressure cavity 311, and one end of the oil return track is communicated with the oil return hole 34, so as to guide oil drops on the static disc 31 into the oil return hole 34.

In at least one embodiment, the compressor 100 further includes a controller (not shown) disposed in the accommodating space 14 and electrically connected to the motor assembly 2. Which is used to activate or deactivate the motor assembly 2.

In at least one embodiment, the compressor 100 further includes an air-oil separator (not shown) disposed within the high pressure chamber 311. The oil-gas separator is used for separating oil mist in the mixed gas into oil drops, the oil drops fall onto the surface of the static disc 31, and the oil drops enter the low-pressure cavity 312 through the throttle valve 35 and the oil return hole 34, so that the loss of lubricating oil is reduced.

The utility model discloses a choke valve 35 that has the filter screen is inserted to the oil gallery 34 on the quiet dish 31 of scroll compressor 100, on one hand, can control fluidic flow through the throttle area or the throttle length that change choke valve 35 to play the effect of pressure buffering to the fluid, when the fluid flows in through the choke valve, choke valve 35 can hinder fluidic operation to a certain extent and reduce the impact force; on the other hand, the filter screen of the throttle valve 35 can filter oil stains in oil drops in the high-pressure chamber 311 and impurities generated by rotational wear in the compressor 100, so as to prevent the oil stains and the impurities from entering the low-pressure chamber 312 through the oil return hole 34, thereby preventing the oil stains and the impurities from damaging the workpieces such as the fixed scroll teeth 32, the movable scroll 4, the motor assembly 2 and the like in the low-pressure chamber 312. Furthermore, the utility model discloses an oil gallery 34 is the straight hole, and for the inclined hole, the processing technology in straight hole is simple, can reduce manufacturing cost.

In addition, the above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make modifications or changes equivalent to the equivalent embodiment of the above disclosed embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments still fall within the scope of the technical solution of the present invention.

Claims (10)

1. A scroll compressor comprising a housing, and a motor assembly, a fixed scroll, a movable scroll and a disc chuck mounted in the housing, wherein the fixed scroll is fixed on the housing, the movable scroll is mounted on the disc chuck and is opposite to the fixed scroll, the disc chuck is mounted on the motor assembly, the fixed scroll comprises a fixed disc and a fixed scroll tooth disposed on one side of the fixed disc, the movable scroll comprises a movable disc and a movable scroll tooth disposed on one side of the movable disc, the fixed scroll tooth and the movable scroll tooth are located between the fixed disc and the movable disc and rotate in opposite directions, the motor assembly is started, the motor assembly drives the disc chuck to rotate, the disc chuck drives the movable scroll to rotate, and the fixed scroll tooth and the movable scroll tooth are matched to form a plurality of compression chambers, characterized in that: the static disc is provided with at least one oil return hole, and a throttle valve is inserted into each oil return hole.

2. The scroll compressor of claim 1, wherein: the throttling valve is a throttling valve with an external filter screen.

3. The scroll compressor of claim 2, wherein: the throttle valve comprises a filtering part, a head part and a throttle body which is arranged in the filtering part in a penetrating way and is connected with the head part, and the filtering part comprises an external filter screen which is covered outside the throttle body.

4. A scroll compressor as claimed in claim 3, wherein: the oil return hole comprises a first through hole far away from the movable disc and a second through hole communicated with the first through hole, the aperture of the first through hole is larger than that of the second through hole, and the filtering part is accommodated in the first through hole.

5. The scroll compressor of claim 4, wherein: the throttling valve further comprises a filter screen sealing ring which is positioned between the filtering part and the head part and is sleeved on the throttling body, the filter screen sealing ring is accommodated in the first through hole, and the filter screen sealing ring is abutted against the hole wall of the first through hole.

6. The scroll compressor of claim 5, wherein: the head comprises a sealing part, a propping part and a convex part which are connected in sequence, the sealing part is connected with the throttle body, the filter screen sealing ring is sleeved on the sealing part, the propping part props against the connecting wall of the first through hole and the second through hole, and the convex part is accommodated in the second through hole.

7. The scroll compressor of claim 4, wherein: the opening of the first through hole, which is positioned on the surface of the static disc, is a first opening, the opening of the second through hole, which is positioned on the surface of the static disc, is a second opening, and the second opening is opposite to the movable disc.

8. The scroll compressor of claim 4, wherein: the opening of the first through hole, which is positioned on the surface of the static disc, is a first opening, the opening of the second through hole, which is positioned on the surface of the static disc, is a second opening, and the second opening is opposite to the faceplate.

9. The scroll compressor of claim 1, wherein: the oil return hole is a straight hole.

10. The scroll compressor of claim 1, wherein: the throttling valve is a throttling valve with an internal filter screen.

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