CN112855532B

CN112855532B - Moving disc assembly and compressor

Info

Publication number: CN112855532B
Application number: CN202110066618.8A
Authority: CN
Inventors: 丁谦; 余风利
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-01-19
Filing date: 2021-01-19
Publication date: 2022-02-18
Anticipated expiration: 2041-01-19
Also published as: CN112855532A

Abstract

The invention discloses a movable disc assembly, which comprises a movable scroll disc and a crankshaft, wherein the front surface of the movable scroll disc is provided with movable scrolls, the crankshaft is connected with the movable scroll disc, and a first connecting piece extends out of the back surface of the movable scroll disc; the second connecting piece extends out of one end of the crankshaft, and the first connecting piece and the second connecting piece are mutually sleeved to generate surface contact, so that the stress of the crankshaft is homogenized. Also discloses a compressor, which comprises the movable disc component. The invention homogenizes the stress of the crankshaft when the compressor works by the structural design of the crankshaft and the movable scroll plate, improves the structural strength and rigidity of the eccentric shaft, increases the stress area, increases the fixed point of the movable scroll plate, prevents overturn and improves the rigidity.

Description

Moving disc assembly and compressor

Technical Field

The invention belongs to the technical field of compressors, and particularly relates to a movable disc assembly and a compressor.

Background

In the traditional scroll compressor, a crankshaft system is complex in stress, bears large force and moment, a bearing is easy to wear, and the working reliability of the compressor is difficult to guarantee. When the compressor works under load, the stress on the crankshaft is limited, and the oil film distribution can be damaged, the oil film bearing capacity is deteriorated, and finally abrasion is caused.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a movable disc assembly and a compressor.

In order to achieve the purpose, the specific technical scheme of the movable disc assembly and the compressor is as follows:

a movable plate assembly comprises a movable scroll plate and a crankshaft, wherein the front surface of the movable scroll plate is provided with movable scrolls, the crankshaft is connected with the movable scroll plate, and a first connecting piece extends out of the back surface of the movable scroll plate; the second connecting piece extends out of one end of the crankshaft, and the first connecting piece and the second connecting piece are mutually sleeved to generate surface contact, so that the stress of the crankshaft is homogenized.

Furthermore, the back of the movable scroll plate extends out of a first connecting piece to form a shaft sleeve, the second connecting piece is a columnar bulge which can be mutually sleeved with the shaft sleeve, and the columnar bulge and the crankshaft are eccentrically arranged.

Furthermore, the movable scroll is connected with the shaft sleeve in an integrated forming mode, and the columnar protrusion is connected with the crankshaft in an integrated forming mode.

Furthermore, a sliding bearing is clamped between the outer surface of the columnar bulge and the inner side wall of the shaft sleeve and is sleeved on the outer surface of the columnar bulge.

Furthermore, an annular boss is connected to the radial direction of the crankshaft, one end, away from the movable scroll plate, of the shaft sleeve is rotatably connected to the annular boss, and contact surfaces of the shaft sleeve and the annular boss are mutually abutted.

Furthermore, the annular boss and the crankshaft are connected in an integrated forming mode.

Furthermore, one end of the shaft sleeve, which is far away from the movable scroll plate, is connected with a plurality of cylindrical pins, and the plurality of cylindrical pins are annularly distributed around the shaft center of the shaft sleeve; and an annular groove matched with the cylindrical pin and rotationally clamped is formed in the annular boss.

Furthermore, the cylindrical pins are distributed in an equiangular ring shape, and the central axes of the cylindrical pins and the central axis of the shaft sleeve are arranged in parallel.

Further, a cylindrical roller bearing for removing the cylindrical rollers is installed in the annular groove, the cylindrical roller bearing comprises an inner ring and an outer ring which are coaxial, and an annular slide way formed between the inner ring and the outer ring limits the cylindrical pin in the annular slide way, so that the cylindrical pin can rotate on the annular slide way.

A compressor comprises the movable disc assembly.

Compared with the prior art, the invention has the following beneficial effects:

the invention relates to a compressor, which is characterized in that through the structural design of a crankshaft and a movable scroll plate, the stress of the crankshaft is homogenized when the compressor works, the structural strength and the rigidity of an eccentric shaft are improved, the stress area is increased, the fixed point of the movable scroll plate is increased, and the compressor is prevented from overturning.

Drawings

FIG. 1 is a view of the movable scroll of the present invention;

FIG. 2 is a detail view of a crankshaft of the present invention;

FIG. 3 is an assembly view of the present invention;

FIG. 4 is a full sectional view of the present invention;

fig. 5 is a partially enlarged view of fig. 4.

The reference numbers in the figures illustrate: the movable scroll 1, the cylindrical pin 101, the bushing 102, the crankshaft 2, the cylindrical roller bearing 3, the sliding bearing 4, the cylindrical pin 101, the annular groove 202, and the annular boss 203.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, a moving plate assembly and a compressor designed according to the present invention will be described in further detail with reference to fig. 1-5.

In the traditional scroll compressor, a crankshaft system is complex in stress, bears large force and moment, easily generates overturning moment, a bearing is easy to wear, and the working reliability of the compressor is difficult to guarantee.

The movable disc component is designed and used on a compressor, and mainly structurally comprises a movable scroll 1 with movable scroll on the front side and a crankshaft 2 connected with the movable scroll 1, wherein a first connecting piece extends out of the back side of the movable scroll 1; one end of the crankshaft 2 extends out of the second connecting piece, and the first connecting piece and the second connecting piece are mutually sleeved to generate surface contact, so that the stress of the crankshaft 2 is homogenized. Move the back of vortex dish 1 and extend first connecting piece for axle sleeve 102, the second connecting piece is the column arch 201 that can cup joint each other with axle sleeve 102, and the eccentric settings between column arch 201 and the bent axle 2, preferably moves vortex dish 1 and axle sleeve 102 integrated into one piece and connect, column arch 201 and bent axle 2 integrated into one piece connect. A sliding bearing 4 is clamped between the outer surface of the columnar bulge 201 and the inner side wall of the shaft sleeve 102, and the sliding bearing 4 is sleeved on the outer surface of the columnar bulge 201. This patent is through the axle sleeve 102 of the design vortex dish 1 and the axle journal structure of bent axle 2, and wherein, the axle journal structure includes columnar protrusion 201 and cyclic annular boss 203, takes place the face contact between the axle sleeve 102 and the axle journal structure of bent axle 2, the function of the 2 atress of realization homogenization bent axle that can be better under the light load condition.

However, when the compressor is operated under a heavy load, the effect of the force applied to the homogenizing crankshaft 2 is limited only by the sliding bearing 4, and at the same time, the oil film distribution is broken, the oil film bearing capacity is deteriorated, and finally, wear is caused. As shown in fig. 4 and 5, according to a further design scheme of the present invention, a cylindrical pin 101 and a cylindrical roller bearing 3 are additionally arranged at the lower end of a shaft sleeve 102, the cylindrical roller bearing 3 is a hollow bearing without a roller and only comprises an inner ring and an outer ring which are coaxial, and the cylindrical pin 101 serves as a roller; according to the structural design, the shaft sleeve 102 of the movable scroll 1 is in physical contact with the shaft neck of the crankshaft 2, so that stress is transmitted. Under the heavy load working condition, the design is further optimized.

The specific design mode is that an annular boss 203 is connected along the radial direction of the crankshaft 2, one end of the shaft sleeve 102 far away from the movable scroll 1 is rotatably connected on the annular boss 203, and the contact surfaces of the shaft sleeve 102 and the annular boss 203 are mutually abutted. Preferably, the annular boss 203 is integrally connected to the crankshaft 2. One end of the shaft sleeve 102, which is far away from the movable scroll 1, is connected with a plurality of cylindrical pins 101, and the plurality of cylindrical pins 101 are annularly distributed around the shaft center of the shaft sleeve 102; the annular boss 203 is provided with an annular groove 202 which is matched with the cylindrical pin 101 and is rotationally clamped. Furthermore, the cylindrical pins 101 are distributed in an equiangular ring shape, and the central axes of the cylindrical pins 101 and the central axis of the shaft sleeve 102 are arranged in parallel, so that the uniformity of the whole stress is ensured. The annular groove 202 is provided with an inner ring and an outer ring, the inner ring and the outer ring are formed into a double-ring structure similar to a cylindrical roller bearing without an inner roller, and an annular slide way formed between the inner ring and the outer ring limits the cylindrical pin 101 in the double-ring structure, so that the cylindrical pin 101 can rotate in the annular slide way, and the cylindrical pin 101 in the design is just like the inner cylindrical roller.

According to the design, the cylindrical pin 101 can rotate on the annular slide way, the radial stress of the crankshaft 2 can be further transmitted, the stress is more uniform, the oil film distribution is improved, the oil film bearing capacity is improved, and the abrasion is reduced; meanwhile, the rigidity and the rigidity of the crankshaft 2 can be increased by the cylindrical roller bearing 3 of the crankshaft 2, and the deformation is reduced; the cylindrical roller bearing 3 of the crankshaft 2 can limit the movable scroll 1, prevent overturning, improve the motion stability and improve the working reliability of the compressor. The structure can realize the purposes of increasing the stress area, homogenizing the stress of the crankshaft 2, improving the structural strength and rigidity of the eccentric shaft, increasing the fixed point of the movable scroll plate 1, preventing overturning, reducing the bearing abrasion and improving the working reliability of the scroll compressor by the relative movement between the shaft sleeve 102 of the movable scroll plate 1 and the shaft neck of the crankshaft 2.

The assembly method of the structural component formed by the designed movable scroll 1 and the crankshaft 2 comprises the following steps:

the hollow cylindrical roller bearing 3 is driven into the annular groove 202 of the journal of the crankshaft 2, the sliding bearing 4 is arranged in the inner ring of the shaft sleeve 102 of the movable scroll 1, the movable scroll 1 with the shaft sleeve 4 is sleeved on the eccentric shaft of the crankshaft 2, and meanwhile, the cylindrical pin 101 of the shaft sleeve 102 of the movable scroll 1 is placed into the coreless cylindrical roller bearing 3 to replace a cylindrical roller through angle adjustment.

When the compressor works, a part of force of the movable disc 1 on the crankshaft 2 is transmitted to the journal part of the crankshaft 2 through the cylindrical pin 101 and the roller bearing 3, so that the stress of the crankshaft 2 is homogenized, the structural strength and rigidity of the eccentric shaft are improved, and the abrasion of the sliding bearing 4 is reduced; meanwhile, the far-end fixing point of the movable scroll plate 1 is added, so that the overturning prevention effect is achieved, the compressor is more stable to operate, and the working reliability of the scroll compressor is improved.

The design of the invention mainly realizes the motion relation and the transmission between the forces by combining the cylindrical pin 101 and the hollow cylindrical roller bearing 3, and realizes the sharing of the transmission force, thereby reducing the stress of the sleeving structure, and the original stress of the crankshaft 2 is borne by two parts, thereby homogenizing the stress of the crankshaft 2, improving the structural strength and the rigidity of the eccentric shaft, and reducing the abrasion of the sliding bearing 4.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a driving disk subassembly, is equipped with the spiral shell's that moves vortex dish (1), with bent axle (2) that move vortex dish (1) and be connected including openly, its characterized in that: a first connecting piece extends out of the back surface of the movable scroll (1); a second connecting piece extends out of one end of the crankshaft (2), and the first connecting piece and the second connecting piece are sleeved with each other to generate surface contact, so that the stress of the crankshaft (2) is homogenized;

the radial direction of the crankshaft (2) is connected with an annular boss (203), one end of the first connecting piece, which is far away from the movable scroll (1), is rotatably connected to the annular boss (203), and the contact surfaces of the first connecting piece and the annular boss (203) are mutually abutted.

2. A moving plate assembly according to claim 1, wherein the first connecting piece is a sleeve (102) extending from the back of the moving scroll plate (1), the second connecting piece is a columnar protrusion (201) capable of being sleeved with the sleeve (102), and the columnar protrusion (201) and the crankshaft (2) are eccentrically arranged.

3. A moving plate assembly according to claim 2, characterized in that the moving scroll (1) is integrally connected with the sleeve (102), and the cylindrical protrusions (201) are integrally connected with the crankshaft (2).

4. The movable plate assembly as recited in claim 2, characterized in that a sliding bearing (4) is clamped between the outer surface of the columnar projection (201) and the inner side wall of the shaft sleeve (102), and the sliding bearing (4) is sleeved on the outer surface of the columnar projection (201).

5. A moving plate assembly according to claim 1, characterized in that the annular boss (203) is connected to the crankshaft (2) in an integral manner.

6. A moving disc assembly according to claim 2, characterized in that a plurality of cylindrical pins (101) are connected to the end of the sleeve (102) away from the moving scroll (1), and the plurality of cylindrical pins (101) are distributed annularly around the axis of the sleeve (102); and an annular groove (202) which is matched with the cylindrical pin (101) and rotationally clamped is formed in the annular boss (203).

7. A moving disc assembly according to claim 6, characterized in that said cylindrical pins (101) are distributed in an equiangular annular manner and the central axes of the cylindrical pins (101) and of the sleeve (102) are arranged in parallel.

8. A moving disc assembly according to claim 6, characterized in that the annular groove (202) has mounted therein a cylindrical roller bearing (3) with cylindrical rollers removed, and the cylindrical roller bearing (3) comprises an inner ring and an outer ring which are coaxial and between which an annular slide is formed which confines the cylindrical pin (101) therein, so that the cylindrical pin (101) can rotate on the annular slide.

9. A compressor comprising the moving plate assembly as recited in any one of claims 1 to 8.