CN107120286B

CN107120286B - Low-pressure cavity compressor and air conditioner

Info

Publication number: CN107120286B
Application number: CN201610104742.8A
Authority: CN
Inventors: 刘达炜; 王勇; 吕浩福; 谢利昌; 范少稳
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Landa Compressor Co Ltd
Priority date: 2016-02-25
Filing date: 2016-02-25
Publication date: 2024-05-17
Anticipated expiration: 2036-02-25
Also published as: CN107120286A

Abstract

The invention discloses a low-pressure cavity compressor and an air conditioner, belongs to the field of air conditioners, and is designed for solving the problems of poor lubrication effect and the like in the conventional device. The invention discloses a low-pressure cavity compressor which comprises a crankshaft and a roller, wherein a central hole is formed in the crankshaft, and an oil inlet hole is formed in the wall of the crankshaft; at least one oil storage groove is formed in the inner wall of the roller, and the oil inlet hole is communicated with the central hole and the oil storage groove; the roller does not rotate relative to the pump body. The air conditioner comprises the low-pressure cavity compressor. According to the low-pressure cavity compressor and the air conditioner, the oil inlet hole can be always communicated with the central hole and the oil storage groove, so that leakage of the suction cavity and the compression cavity in the cylinder is avoided, and the lubrication effect is good; the sliding vane and the roller can be always tightly attached together, so that the suction cavity and the compression cavity inside the cylinder are prevented from leakage; the roller can not rotate relative to the air cylinder under the limit of the sliding sheet, so that the roller at low pressure can be always at a low pressure position, and the occurrence of air leakage is avoided.

Description

Low-pressure cavity compressor and air conditioner

Technical Field

The invention relates to the field of air conditioners, in particular to a low-pressure cavity compressor and an air conditioner comprising the same.

Background

The outside of the pump body in the existing low-pressure cavity compressor is in a low-pressure state, and the pressure of the pump body is equal to the suction pressure. The cylinder sucks air from a low-pressure cavity in the compressor, is compressed in the cylinder and is discharged into a cavity between the lower flange and the lower flange cover plate through an exhaust port arranged on the lower flange, and then is discharged out of the compressor from the cavity through an exhaust pipe and enters the condenser.

Because the oil pool is in a low pressure state, and the pressure of the internal gap of the pump body is complex, even the frozen oil can not completely lubricate all the pump bodies under the action of the oil guide plate.

Disclosure of Invention

It is an object of the present invention to provide a low pressure chamber compressor with better lubrication.

It is still another object of the present invention to provide an air conditioner in which the compressor performance is more stable.

In order to achieve the purpose, on one hand, the invention adopts the following technical scheme:

the low-pressure cavity compressor comprises a crankshaft and rollers, wherein a central hole is formed in the crankshaft, and an oil inlet hole is formed in the wall of the crankshaft; at least one oil storage groove is formed in the inner wall of the roller, and the oil inlet is communicated with the central hole and the oil storage groove; the rollers do not rotate relative to the pump body.

In particular, the compressor further comprises a sliding vane, and the end head of the sliding vane is inlaid on the outer wall of the roller.

Particularly, the end of the sliding sheet forms a protruding part, the outer wall of the roller is provided with a concave part matched with the protruding part, and the protruding part is inlaid in the concave part.

Further, the cross section of the protruding portion is circular, and the width L of the protruding portion is larger than the width K of the sliding sheet.

In particular, the connection part of the sliding vane and at least one side of the protruding part is inwards recessed to form a groove-shaped sliding vane abdication structure.

Particularly, two convex edges are respectively formed between the outer wall of the roller and the two side end parts of the concave part, and at least one convex edge is retracted to form a roller abdication structure.

In particular, at least one oil storage groove is formed in the inner wall of the roller, and at least one oil through hole is formed in the roller; the oil through hole is a through hole for communicating the oil storage groove and the upper air suction cavity of the air cylinder.

In particular, the pump body assembly further comprises a cylinder, a sliding vane groove is formed in the cylinder, and the sliding vane penetrates through the sliding vane groove.

In particular, an oil guide plate is arranged in a central hole of the crankshaft.

In yet another aspect, the present invention employs the following technical scheme:

an air conditioner comprises the low-pressure cavity compressor.

According to the low-pressure cavity compressor, the roller does not rotate relative to the pump body, so that the oil inlet hole can be always communicated with the central hole and the oil storage groove, leakage of the suction cavity and the compression cavity in the cylinder is avoided, and a good lubricating effect is achieved.

The air conditioner comprises the low-pressure cavity compressor, the air suction cavity and the compression cavity in the air cylinder are good in tightness, the lubricating effect is better, and the performance of the compressor is more stable.

Drawings

FIG. 1 is a cross-sectional view of a low pressure chamber compressor provided in accordance with a preferred embodiment of the present invention;

FIG. 2 is a schematic illustration of a pump body assembly according to a preferred embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 at A;

FIG. 4 is a top view of a pump body assembly provided in accordance with a preferred embodiment of the present invention;

FIG. 5 is a schematic view of a roller yielding structure according to a preferred embodiment of the present invention;

FIG. 6 is a second schematic view of a pump assembly according to a first preferred embodiment of the present invention;

Fig. 7 is a schematic view of a roller according to a preferred embodiment of the present invention.

In the figure:

1. A sliding sheet; 2. a roller; 3. a cylinder; 4. a crankshaft; 11. a protruding portion; 12. a slider abdication structure; 21. a recessed portion; 22. a roller abdication structure; 23. a rib; 24. an oil storage groove; 25. oil holes; 31. an air suction cavity; 32. a slide groove; 41. a central bore; 42. and an oil inlet hole.

Detailed Description

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

First preferred embodiment:

The preferred embodiment discloses a low pressure chamber compressor. As shown in fig. 1, the low pressure chamber compressor includes a crankshaft 4 and a roller 2. A central hole 41 is formed in the crankshaft 4, and an oil inlet hole 42 is formed in the wall of the crankshaft 4; at least one oil storage groove 24 is arranged on the inner wall of the roller 2, and an oil inlet hole 42 is communicated with the central hole 41 and the oil storage groove 24; the roller 2 does not rotate relative to the pump body.

The roller 2 is restrained from rotating, so that the oil inlet hole 42 is always communicated with the central hole 41 and the oil storage groove 24, the pressure of the air suction cavity of the compressor is lower when the compressor sucks air, and part of frozen oil can be sucked from the oil storage groove 24 of the roller 2 for lubrication of a pump body; while ensuring that the oil inlet 42 always corresponds to a low pressure position without cross-ventilation.

As shown in fig. 2 to 7, the low pressure cavity compressor comprises a pump body assembly, wherein the pump body assembly comprises a sliding sheet 1 and a roller 2, and the end head of the sliding sheet 1 is embedded on the outer wall of the roller 2. The roller 2 cannot rotate (i.e., the roller 2 cannot rotate relative to the cylinder 3) under the restriction of the slide sheet 1, and the roller 2 at low pressure can be always at the low pressure position; the mosaic structure of the sliding vane 1 and the roller 2 enables the sliding vane 1 and the roller to be tightly attached together all the time, and ensures that the suction cavity and the compression cavity inside the cylinder are not leaked.

The specific mosaic structure of the sliding vane 1 and the roller 2 is not limited, and the sliding vane 1 and the roller can be ensured to be always tightly stuck together. Preferably, the end of the sliding sheet 1 forms a convex part 11, a concave part 21 matched with the convex part 11 is arranged on the outer wall of the roller 2, and the convex part 11 is inlaid in the concave part 21. The matching structure of the protruding part 11 and the concave part 21 is simple in processing, easy to assemble and disassemble, and the slide sheet 1 has good manufacturing effect on the roller 2.

Preferably, the cross section of the protruding part 11 is circular, and correspondingly the recessed part 21 is circular, so that a certain movable space is reserved for the sliding sheet 1 and the roller 2. In order to obtain a better embedding effect, the width L of the protruding part 11 is larger than the width K of the sliding sheet 1, i.e. the width at the end opening of the concave part 21 is smaller than the width L of the protruding part 11, so that the end head of the sliding sheet 1 is prevented from being separated from the outer wall of the roller 2.

In order to provide a certain movable space for the sliding vane 1 and the roller 2 and prevent interference during relative rotation between the two, a groove-shaped sliding vane abdication structure 12 can be formed by inwards recessing at least one side connection part of the sliding vane 1 and the protruding part 11, and/or at least one convex rib 23 can be formed by inwards recessing to form a roller abdication structure 22, as shown in fig. 5. Wherein the rib 23 is a structure formed between the outer wall of the roller 2 and both side ends of the recess 21.

On the basis of the above structure, as shown in fig. 7, at least one oil storage groove 24 is provided on the inner wall of the roller 2, and at least one oil passing hole 25 is provided on the roller 2; the oil passing hole 25 is a through hole for communicating the oil storage groove 24 with the suction chamber 31 on the cylinder 3. The oil through hole 25 is always positioned in the suction cavity of the compressor, and a certain amount of refrigerating oil can be input into the compressor cavity for lubricating the pump body.

On the basis of the structure, the pump body assembly can further comprise a cylinder 3, a sliding vane groove 32 is formed in the cylinder 3, and the sliding vane 1 is arranged in the sliding vane groove 32 in a penetrating mode and used for supporting the sliding vane 1. An oil guide plate can be arranged in the central hole of the crankshaft, and the oil storage groove of the roller can store frozen oil under the action of the oil guide plate.

In order to prevent the roller 2 from rotating relative to the pump body, a swing structure may be used in addition to the mosaic structure of the slide 1 and the roller 2, or other structures may be used.

Second preferred embodiment:

the preferred embodiment discloses an air conditioner. The air conditioner comprises the low-pressure cavity compressor in the first preferred embodiment, solves the problem that the suction cavity and the compression cavity in the cylinder are leaked, and has better refrigerating oil lubrication effect.

Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims

1. A low-pressure cavity compressor comprising a crankshaft (4) and a roller (2), characterized in that a central hole (41) is formed inside the crankshaft (4), and an oil inlet hole (42) is formed in the wall of the crankshaft (4); at least one oil storage groove (24) is formed in the inner wall of the roller (2), and the oil inlet hole (42) is communicated with the central hole (41) and the oil storage groove (24); the roller (2) does not rotate relative to the pump body;

The compressor further comprises a sliding vane (1), and the end head of the sliding vane (1) is embedded on the outer wall of the roller (2);

At least one oil storage groove (24) is formed in the inner wall of the roller (2), and at least one oil through hole (25) is formed in the roller (2); the oil through hole (25) is a through hole which is communicated with the oil storage groove (24) and the air suction cavity (31) on the cylinder (3);

The pump body further comprises a cylinder (3), a sliding vane groove (32) is formed in the cylinder (3), and the sliding vane (1) is arranged in the sliding vane groove (32) in a penetrating mode.

2. The low-pressure cavity compressor according to claim 1, characterized in that the end of the sliding vane (1) forms a protruding part (11), a concave part (21) matched with the protruding part (11) is arranged on the outer wall of the roller (2), and the protruding part (11) is inlaid in the concave part (21).

3. The low pressure chamber compressor according to claim 2, characterized in that the cross section of the projection (11) is circular, the width L of the projection (11) being greater than the width K of the slide (1).

4. A low pressure chamber compressor according to claim 2 or 3, characterized in that a groove-like vane relief structure (12) is formed recessed inwardly at the connection of the vane (1) and at least one side of the projection (11).

5. A low pressure chamber compressor according to claim 2 or 3, characterized in that two ribs (23) are formed between the outer wall of the roller (2) and the two side ends of the recess (21), at least one rib (23) being contracted inwards to form a roller yielding structure (22).

6. A low pressure chamber compressor according to any one of claims 1 to 3, characterized in that an oil guide plate is provided in the central bore (41) of the crankshaft (4).

7. An air conditioner comprising a low pressure cavity compressor as claimed in any one of claims 1 to 6.