CN210423012U - Light cylinder structure for rolling piston type refrigeration compressor - Google Patents

Abstract

The utility model belongs to the technical field of refrigeration compressors, and relates to a light cylinder structure for a rolling piston type refrigeration compressor, wherein the cylinder is provided with a convex balance block; the balance block is fixed on the outer wall surface of the cylinder body of the air cylinder or integrally formed with the outer wall surface of the cylinder body of the air cylinder, a slide sheet groove, an air suction hole and at least two air passing holes are formed in the air cylinder, and the air cylinder is made of aluminum alloy; the balance block is made of an aluminum alloy balance block, and a connecting line from the center of gravity of the balance block to the center of the cylinder is a first straight line; the central line of the slide sheet groove is a second straight line, and the included angle between the first straight line and the second straight line is 0.5-1.5 degrees; at least two air passing holes are symmetrically distributed on two sides of the first straight line, and the number of the air passing holes is even. The utility model discloses can satisfy the aircraft to the harsh requirement of its weight, the surface offset is little, light in weight, the cylinder of enough long-term reliable use under high temperature environment.

Description

Light cylinder structure for rolling piston type refrigeration compressor

Technical Field

The utility model belongs to the technical field of compressor, concretely relates to light cylinder structure for rolling piston compressor.

Background

The rolling piston type refrigerating compressor is a fluid machinery for increasing low-temperature low-pressure refrigerant gas into high-temperature high-pressure refrigerant gas, is the heart of a refrigerating system, and is widely applied to the fields of household air conditioners, refrigerators and the like due to reliable work and low cost. The rolling piston type refrigeration compressor mainly comprises a shell, a motor, a pump body, a lubricating oil circuit and a cooling/throttling gas circuit, wherein the pump body mainly comprises six parts, namely a rolling piston, a cylinder, an eccentric shaft, a main bearing seat, an auxiliary bearing seat and a slide block, and the six parts are commonly called as a machine core. In the last 70 th century, rolling piston refrigeration compressors were used in environmental control systems of the warplanes of F16 and F15 in the united states, which are stable and reliable in operation and large in refrigerating capacity, but because the movement material thereof is cast iron, the weight reduction is greatly limited, thereby resulting in a disadvantage in the field of onboard applications as compared with scroll refrigeration compressors of aluminum alloy movements. Adopt the aluminum alloy material with rolling piston compressor's core structure, compare with the cast iron structure, can reduce the weight of core structure more than 60%, however, receive aluminum alloy material's characteristic influence, again because the core is in work under the high-temperature and high-pressure environment for a long time, therefore great offset inevitably exists in each part of core, wherein, with cylinder surface's offset maximum, again because be clearance fit between cylinder and the rolling piston, when cylinder surface's offset is too big, lead to taking place the card phenomenon of dying between cylinder and the rolling piston, thereby unable normal work, in addition also can lead to the bearing at cylinder both ends to take place the slope, reduce the life of bearing.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the defects in the prior art, the cylinder can meet the severe requirement of the airplane on the weight of the airplane, has small surface offset and light weight, and can be reliably used for a long time in a high-temperature environment.

The technical scheme of the invention is as follows: a lightweight cylinder structure for a rolling piston refrigeration compressor is provided, the cylinder having a projecting counterweight; the balance block is fixed on the outer wall surface of the cylinder body of the air cylinder or integrally formed with the outer wall surface of the cylinder body of the air cylinder, a slide sheet groove, an air suction hole and at least two air passing holes are formed in the air cylinder, and the air cylinder is made of aluminum alloy; the balance block is made of an aluminum alloy balance block, and a connecting line from the center of gravity of the balance block to the center of the cylinder is a first straight line; the central line of the slide sheet groove is a second straight line, and the included angle between the first straight line and the second straight line is 0.5-1.5 degrees; at least two air passing holes are symmetrically distributed on two sides of the first straight line, and the number of the air passing holes is even.

Further, the included angle is 1 degree.

Furthermore, the number of the air passing holes is two, and the two air passing holes are symmetrically distributed on two sides of the first straight line.

Further, the cross section of the at least one air passing hole is circular, and the diameter of the circle is 6 mm.

Further, the cylinder body and the balance block are of an integrated structure.

Further, the cylinder body is further provided with an exhaust valve plate bolt receding hole, the exhaust valve plate bolt receding hole is a blind hole, the depth of the blind hole is 3mm, the cross section of the exhaust valve plate bolt receding hole is circular, and the diameter of the circular hole is 6 mm. The offset amount of the cylinder surface is reduced.

The utility model discloses a cylinder body and balancing piece are made by aluminum alloy material, compare with cast iron material, can reduce its weight more than 60%, have alleviateed weight widely to can satisfy the harsh requirement of aircraft to its weight.2 the utility model discloses have contained angle α between the central axis of balancing piece and the central axis of slide groove, contained angle α's angular range is 0.5 ~ 1.5, and this contained angle is 0 among the civil compressor, has increased the symmetry of cylinder through setting up contained angle α, reduce the cylinder in the high temperature environment work above 100 ℃ the inclination on cylinder body surface, and then guarantee that the cylinder can be stable and reliably long-time operation, and improved rolling piston refrigeration compressor's life.3 the utility model discloses cylinder body and balancing piece are the integrated into one piece structure, durable, firm to save the material, reduce the processing step, and then avoid the processing stress that appears in a lot of processing, improve the precision.

Drawings

Fig. 1 is a schematic structural view of the present invention;

wherein: 1. a cylinder body; 2. a counterbalance; 3. a suction hole; 4. a slide groove; 5. a first air passing hole; 6. a second air passing hole; 7. and the exhaust valve plate bolt retreats from the hole.

Detailed Description

Embodiment 1, as shown in fig. 1, there is provided a lightweight cylinder structure for a rolling piston refrigeration compressor, the cylinder having a protruding balance weight; the balance block and the outer wall surface of the cylinder body of the cylinder are integrally formed, a slide sheet groove, an air suction hole and at least two air passing holes are formed in the cylinder, and the cylinder is made of aluminum alloy; the balance block is made of an aluminum alloy balance block, and a connecting line from the center of gravity of the balance block to the center of the cylinder is a first straight line; the center line of the slide sheet groove is a second straight line, and an included angle between the first straight line and the second straight line is 1 degree; at least two air passing holes are symmetrically distributed on two sides of the first straight line, the number of the air passing holes is two, and the two air passing holes are symmetrically distributed on two sides of the first straight line; the cross section of the at least one air passing hole is circular, and the diameter of the circle is 6 mm; the cylinder body is further provided with an exhaust valve block bolt receding hole which is a blind hole, the depth of the blind hole is 3mm, the cross section of the exhaust valve block bolt receding hole is circular, and the diameter of the circular hole is 6 mm. The offset amount of the cylinder surface is reduced.

Example 2

A lightweight cylinder structure for a rolling piston refrigeration compressor is provided, the cylinder having a projecting counterweight; the balance block is fixed on the outer wall surface of the cylinder body of the air cylinder or integrally formed with the outer wall surface of the cylinder body of the air cylinder, a slide sheet groove, an air suction hole and at least two air passing holes are formed in the air cylinder, and the air cylinder is made of aluminum alloy; the balance block is made of an aluminum alloy balance block, and a connecting line from the center of gravity of the balance block to the center of the cylinder is a first straight line; the center line of the slide sheet groove is a second straight line, and an included angle between the first straight line and the second straight line is 0.5 degrees; the four air passing holes are symmetrically distributed on two sides of the first straight line.

The cross section of the at least one air passing hole is circular, and the diameter of the circle is 6 mm.

The cylinder body and the balance block are of an integrally formed structure.

The cylinder body is further provided with an exhaust valve block bolt receding hole which is a blind hole, the depth of the blind hole is 3mm, the cross section of the exhaust valve block bolt receding hole is circular, and the diameter of the circular hole is 6 mm. The offset amount of the cylinder surface is reduced.

Claims (6)

1. A kind of light air cylinder structure used for rolling piston type refrigeration compressor, its characteristic is: the cylinder is provided with a convex balance block; the balance block is fixed on the outer wall surface of the cylinder body of the air cylinder or integrally formed with the outer wall surface of the cylinder body of the air cylinder, a slide sheet groove, an air suction hole and at least two air passing holes are formed in the air cylinder, and the air cylinder is made of aluminum alloy; the balance block is made of an aluminum alloy balance block, and a connecting line from the center of gravity of the balance block to the center of the cylinder is a first straight line; the central line of the slide sheet groove is a second straight line, and the included angle between the first straight line and the second straight line is 0.5-1.5 degrees; at least two air passing holes are symmetrically distributed on two sides of the first straight line, and the number of the air passing holes is even.

2. A lightweight cylinder construction for a rolling piston refrigeration compressor as set forth in claim 1 and characterized by: the included angle is 1 degree.

3. A lightweight cylinder construction for a rolling piston refrigeration compressor as set forth in claim 1 and characterized by: the number of the air passing holes is two, and the two air passing holes are symmetrically distributed on two sides of the first straight line.

4. A lightweight cylinder construction for a rolling piston refrigeration compressor as set forth in claim 1 and characterized by: the cross section of the at least one air passing hole is circular, and the diameter of the circle is 6 mm.

5. A lightweight cylinder construction for a rolling piston refrigeration compressor as set forth in claim 1 and characterized by: the cylinder body and the balance block are of an integrally formed structure.

6. A lightweight cylinder construction for a rolling piston refrigeration compressor as set forth in claim 1 and characterized by: the cylinder body is further provided with an exhaust valve block bolt receding hole which is a blind hole, the depth of the blind hole is 3mm, the cross section of the exhaust valve block bolt receding hole is circular, and the diameter of the circular hole is 6 mm.

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