CN214499415U

CN214499415U - Scroll compressor

Info

Publication number: CN214499415U
Application number: CN202120048034.3U
Authority: CN
Inventors: 张鑫; 闫伟国; 张铁良; 欧学斌; 卢宏彦; 邓瑞; 刘文策
Original assignee: Panasonic Appliances Compressor Dalian Co Ltd
Current assignee: Bingshan Songyang Compressor Dalian Co ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-10-26
Anticipated expiration: 2031-01-08

Abstract

The utility model provides a scroll compressor, including compressor housing, compression subassembly, drive assembly and driving motor, the compression subassembly drive assembly with driving motor sets up the inside of compressor housing, the compression subassembly sets up drive assembly's upper end, the compression subassembly is the vortex structure, driving motor sets up drive assembly's lower extreme, drive assembly includes: drive crankshaft and eccentric cover, drive crankshaft passes through eccentric cover with vortex structure links to each other, the utility model discloses mainly utilize to set up oil groove and wearing layer between eccentric cover and crank throw to play the wearing and tearing that effectively reduce between eccentric cover and the crank throw.

Description

Scroll compressor

Technical Field

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

Background

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

A scroll compressor generally includes a compression mechanism including movable and fixed scroll members for compressing refrigerant. The compression mechanism is driven by an eccentric throw that drives a crankshaft. An eccentric sleeve is arranged between the crank throw and the compression mechanism. The eccentric sleeve can be driven by the crank throw and can generate relative displacement, thereby realizing the purposes of changing the eccentric of the crank throw and radially unloading between the vortex teeth of the movable and fixed vortex disks

However, in this process, there is a large pressure and also a relative displacement between the eccentric sleeve and the bell crank, which results in severe wear of the eccentric sleeve, which affects the radial unloading performance and also shortens the service life of the eccentric sleeve.

In view of the above problems in the prior art, it is necessary to improve the wear resistance of the crank throw contact portion and the eccentric sleeve, thereby overcoming the problems in the prior art.

There is therefore a need for a scroll compressor.

SUMMERY OF THE UTILITY MODEL

In accordance with the technical problems set forth above, a scroll compressor is provided. The utility model discloses mainly utilize to set up oil groove and wearing layer between eccentric cover and bell crank to play and effectively reduce the wearing and tearing between eccentric cover and the bell crank. The utility model discloses a technical means as follows:

the utility model provides a scroll compressor, includes compressor housing, compression subassembly, transmission assembly and driving motor, its characterized in that, the compression subassembly the transmission assembly with driving motor sets up the inside of compressor housing, the compression subassembly sets up the upper end of transmission assembly, the compression subassembly is the vortex structure, driving motor sets up the lower extreme of transmission assembly, the transmission assembly includes: the driving crankshaft is connected with the vortex structure through the eccentric sleeve.

Furthermore, the driving crankshaft is of a shaft body structure, an eccentric driving crank throw is arranged at the front end of the driving crankshaft, an eccentric sleeve matching part is arranged on the eccentric driving crank throw, and the eccentric sleeve matching part and a plane coplanar tangent plane formed by the axis of the eccentric driving crank throw and the axis of the driving crankshaft are coplanar; the eccentric sleeve is of a circular tubular structure, a crank matching part matched with the tangential plane of the driving crankshaft is arranged in the eccentric sleeve, and an oil film structure or a wear-resistant structure is arranged on the driving crankshaft and the eccentric sleeve.

Further, the oil film structure is including leading oil pipe, oil groove and leading the oil groove, drive crankshaft's inside is equipped with leads oil pipe, be equipped with the oil groove on the bell crank cooperation portion, the oil groove sets up the non-important contact surface department of bell crank cooperation portion, the upper end of eccentric cover is equipped with leads the oil groove.

Furthermore, the wear-resistant structure is a wear-resistant layer, the crank matching part or the eccentric sleeve is integrally provided with the wear-resistant layer, and the eccentric sleeve matching part or the driving crankshaft is integrally provided with the wear-resistant layer.

Further, the wear resistant layer is made of one of metal layer, diamond-like carbon, carbide, nitride, silicide, boride or oxide through one of the processes of carburizing, nitriding, carbonitriding, shot blasting and surface quenching heat treatment.

Further, the compression assembly includes a non-orbiting scroll and an orbiting scroll that are intermeshed by a helical vane.

Further, the eccentric sleeve is disposed at a hub of the orbiting scroll.

Further, the movable scroll and the fixed scroll are connected by an oldham ring, and the compression assembly is supported by an upper portion of an upper support structure of the compressor housing.

The utility model has the advantages of it is following:

1. the utility model provides a scroll compressor, which has eccentric variable capability of realizing radial unloading of a scroll plate;

2. the scroll compressor provided by the utility model can simplify the processing technology, and an oil groove can be formed when a casting is formed;

3. the utility model provides a pair of scroll compressor sets up can show the life who prolongs eccentric bushing after the wearing layer.

Based on the reason, the utility model discloses can extensively promote in fields such as compressor technique.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic longitudinal sectional view of the scroll compressor according to the present invention.

Fig. 2 is a schematic view of a transmission assembly of a scroll compressor according to the present invention.

Fig. 3 is a schematic view of a driving crankshaft of a scroll compressor according to the present invention.

Fig. 4 is a schematic view of an eccentric sleeve of a scroll compressor according to the present invention.

Fig. 5 is a schematic view of an oil groove of a scroll compressor according to the present invention.

In the figure: 1. an upper cover; 2. fixing vortex; 3. an eccentric sleeve; 4. carrying out movable vortex; 5. an upper support; 6. a compressor housing; 7. a rotor; 8. a stator; 9. a drive crankshaft; 10. a lower cover; 11. a crank cooperating part; 12. An eccentric bushing engaging portion; 13. an oil guide pipe; 14. an oil guide groove; 15. an oil groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-5, the utility model provides a scroll compressor 3, including compressor housing 6, compression subassembly, drive assembly and driving motor, the compression subassembly the drive assembly with driving motor sets up the inside of compressor housing 6, the compression subassembly sets up the upper end of drive assembly, the compression subassembly is the vortex structure, driving motor sets up the lower extreme of drive assembly, the drive assembly includes: the driving crankshaft 9 and the eccentric sleeve 3, wherein the driving crankshaft 9 is connected with the vortex structure through the eccentric sleeve 3; the driving crankshaft 9 is of a shaft body structure, an eccentric driving crank throw is arranged at the front end of the driving crankshaft 9, an eccentric sleeve matching part 12 is arranged on the eccentric driving crank throw, and a coplanar tangent plane is formed by the eccentric sleeve matching part 12, the axis of the eccentric driving crank throw and the axis of the driving crankshaft 9; the eccentric sleeve 3 is of a circular tubular structure, a crank matching part 11 matched with the tangential surface of the driving crankshaft 9 is arranged in the eccentric sleeve 3, and an oil film structure or a wear-resistant structure is arranged on the driving crankshaft 9 and the eccentric sleeve 3; the oil film structure comprises an oil guide pipe 13, an oil groove 15 and an oil guide groove 14, the oil guide pipe 13 is arranged inside the driving crankshaft 9, the crank matching part 11 is provided with the oil groove 15, the oil groove 15 is arranged at the non-important contact surface of the crank matching part 11, and the upper end of the eccentric sleeve 3 is provided with the oil guide groove 14; the wear-resistant structure is a wear-resistant layer, the crank matching part 11 or the eccentric sleeve 3 is integrally provided with the wear-resistant layer, and the eccentric sleeve matching part 12 or the driving crankshaft 9 is integrally provided with the wear-resistant layer; the wear-resistant layer is made of one of metal layers, diamond-like carbon, carbide, nitride, silicide, boride or oxide through one of the processes of carburizing, nitriding, carbonitriding, shot blasting and surface quenching heat treatment; the compression assembly comprises a fixed scroll 2 and an movable scroll 4, and the fixed scroll 2 and the movable scroll 4 are mutually meshed through a spiral blade; the eccentric sleeve 3 is arranged at the hub of the movable scroll 4; the movable vortex 4 and the fixed vortex 2 are connected through an oldham ring, and the compression assembly is supported by the upper part of an upper support 5 structure of the compressor shell 6.

Example 1

The scroll compressor shown in fig. 1 generally includes the compressor housing 6 and upper and

lower covers

1 and 10 mounted at both ends of the compressor housing 6. The compressor housing 6 is provided with the drive motor composed of a stator 8 and a rotor 7. The rotor 7 is provided with the driving crankshaft 9 for driving the vortex structure composed of the fixed vortex 2 and the movable vortex 4, and the purpose of compressing working fluid is achieved by the mutual meshing of the spiral blades between the movable vortex 4 and the fixed vortex 2.

The function of the eccentric sleeve 3 is as follows: 1. the power of the driving crankshaft 9 is transmitted to the movable scroll 4; 2. the eccentric center is adjusted to enable the compressor to run stably; 3. the vanes of the movable scroll 4 and the fixed scroll 2 can be separated temporarily to allow the liquid refrigerant or foreign matter to pass through.

For various aspects of performance, process forming and cost, the eccentric sleeve 3 is generally made of a powder metallurgy part, i.e., a metal product formed by press forming or sintering a metal powder or a mixture of a metal powder and a non-metal powder (e.g., an iron-based powder or the like) as a material.

During the operation of the compressor, due to the extremely large pressure and the small displacement between the driving crankshaft 9 and the eccentric sleeve 3, the stress between the particles sintered by the powder is increased, the connection between the particles is broken, and the particles are separated. The contact portion of the eccentric sleeve 3 with the drive crankshaft 9 is easily worn.

Therefore the utility model provides two solutions:

the scheme is that the eccentric sleeve combining part 12 is provided with the oil groove 15, and the end parts of the eccentric sleeve combining part 12 and the crank combining part 11 are transversely slotted. After the crankshaft is driven to operate, the frozen oil is sprayed out from the oil guide pipe 13 and enters the oil groove 15, an oil film is formed between the eccentric sleeve joint part 12 and the crank throw joint part 11, and further the abrasion of a contact surface is reduced.

The aforesaid the fluting mode of oil groove 15 is not intended to be restricted the utility model discloses, the fluting mode of oil groove 15 can be horizontal on the basis of not destroying important contact surface, vertical and slant fluting.

And the second scheme is to perform integral carburization treatment on the eccentric sleeve 3 and perform high-frequency quenching treatment on the crank throw joint part 11, so as to improve the wear resistance of the friction surface and prolong the service life of the eccentric sleeve.

However, this method of providing the abrasion resistant layer is not limited to the method in this embodiment. The wear resistant layer arrangement of the present invention may be formed by other processes known in the art, such as carburizing, nitriding, carbonitriding, shot peening, and case hardening heat treatment. According to various processes, the wear resistant layer may be formed of a metal layer, a diamond-like carbon, a carbide, a nitride, a silicide, a boride or an oxide, etc., for example the wear resistant layer may be formed of chromium carbide.

Through the two schemes, the wear resistance between the eccentric sleeve 3 and the driving crankshaft 9 can be effectively improved, and the service life of the eccentric sleeve 3 is prolonged, so that the compressor runs stably and the service life is prolonged.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a scroll compressor, includes compressor housing, compression subassembly, transmission assembly and driving motor, its characterized in that, the compression subassembly the transmission assembly with driving motor sets up the inside of compressor housing, the compression subassembly sets up the upper end of transmission assembly, the compression subassembly is the vortex structure, driving motor sets up the lower extreme of transmission assembly, the transmission assembly includes: the driving crankshaft is connected with the vortex structure through the eccentric sleeve.

2. The scroll compressor of claim 1, wherein the driving crankshaft is of a shaft body structure, the front end of the driving crankshaft is provided with an eccentric driving crank throw, the eccentric driving crank throw is provided with an eccentric sleeve matching part, and the eccentric sleeve matching part and a plane formed by the axis of the eccentric driving crank throw and the axis of the driving crankshaft are coplanar with a tangential plane; the eccentric sleeve is of a circular tubular structure, a crank matching part matched with the tangential plane of the driving crankshaft is arranged in the eccentric sleeve, and an oil film structure or a wear-resistant structure is arranged on the driving crankshaft and the eccentric sleeve.

3. The scroll compressor according to claim 2, wherein the oil film structure comprises an oil guiding pipe, an oil groove and an oil guiding groove, the oil guiding pipe is arranged inside the driving crankshaft, the oil groove is arranged on the crank matching portion, the oil groove is arranged at a non-important contact surface of the crank matching portion, and the oil guiding groove is arranged at an upper end of the eccentric sleeve.

4. The scroll compressor of claim 2, wherein the wear resistant structure is a wear resistant layer, the crank engaging portion or the eccentric sleeve is integrally provided with the wear resistant layer, and the eccentric sleeve engaging portion or the driving crankshaft is integrally provided with the wear resistant layer.

5. The scroll compressor of claim 4, wherein the wear resistant layer is a metal layer, diamond like carbon, carbide, nitride, silicide, boride or oxide formed by one of carburizing, nitriding, carbonitriding, shot peening and case hardening heat treatment.

6. The scroll compressor of claim 1, wherein the compression assembly includes a non-orbiting scroll and an orbiting scroll, the non-orbiting and orbiting scrolls intermeshed by a helical vane.

7. The scroll compressor of claim 6, wherein the eccentric sleeve is disposed at a hub of the orbiting scroll.

8. A scroll compressor as claimed in claim 6, wherein said orbiting scroll is connected to said non-orbiting scroll by an oldham ring, said compression assembly being supported by an upper portion of an upper support structure of said compressor housing.