阅读说明：本技术 曲轴、摆动旋转式压缩机、空调器 (Crankshaft, swing rotary compressor and air conditioner ) 是由 程剑国 丁学超 王勇 彭小涛 李旺宏 于 2021-09-08 设计创作，主要内容包括：本发明提供一种曲轴、摆动旋转式压缩机、空调器,其中的泵体组件,包括曲轴、滚子叶片,曲轴包括偏心部,偏心部的外圆周壁上构造有补气出口,滚子叶片套装于偏心部上,滚子叶片的滚子部上的中心孔孔壁上还构造有沿偏心部的周向延伸的第一环形槽,第一环形槽内构造有补气口,补气出口流出的冷媒能够依次经由第一环形槽、补气口进入压缩机的压缩腔内。根据本发明,通过在滚子叶片的滚子部的中心孔孔壁上构造第一环形槽,保证曲轴的补气出口在旋转过程中能够通过第一环形槽与补气口一直连通,补气流路不再如现有技术中那样设置在气缸、轴承、叶片上,从而克服相关技术中存在的补气位置、补气口尺寸与密封性之间存在矛盾的不足。(The invention provides a crankshaft, a swing rotary compressor and an air conditioner, wherein a pump body assembly comprises a crankshaft and roller blades, the crankshaft comprises an eccentric part, an air supplementing outlet is formed in the outer circumferential wall of the eccentric part, the roller blades are sleeved on the eccentric part, a first annular groove extending along the circumferential direction of the eccentric part is further formed in the hole wall of a central hole in the roller part of the roller blades, an air supplementing port is formed in the first annular groove, and a refrigerant flowing out of the air supplementing outlet can enter a compression cavity of the compressor through the first annular groove and the air supplementing port in sequence. According to the invention, the first annular groove is formed on the hole wall of the central hole of the roller part of the roller blade, so that the air supply outlet of the crankshaft can be always communicated with the air supply port through the first annular groove in the rotating process, and an air supply flow path is not arranged on an air cylinder, a bearing and a blade as in the prior art, thereby overcoming the defects of contradiction among the air supply position, the size of the air supply port and the sealing property in the related technology.)

1. The utility model provides a pump body subassembly, its characterized in that, includes bent axle (10), roller blade (20), bent axle (10) are including eccentric portion (101), be constructed tonifying qi export (102) on the outer circumferential wall of eccentric portion (101), roller blade (20) suit in on eccentric portion (101), still be constructed on the centre bore pore wall on the roller portion of roller blade (20) and follow first ring channel (201) of the circumference extension of eccentric portion (101), be constructed in first ring channel (201) and mend gas port (202), the refrigerant that tonifying qi export (102) flow can be via in proper order in first ring channel (201), tonifying gas port (202) get into compression chamber (300) of compressor.

2. The pump body assembly according to claim 1, characterized in that the lip of the gas make-up outlet (102) on the side facing the first annular groove (201) is flared.

3. The pump body assembly according to claim 1, wherein the crankshaft (10) is provided with an air supply passage (103), one end of the air supply passage (103) is communicated with the air supply outlet (102), the other end of the air supply passage (103) is communicated with an air supply inlet (104), the crankshaft (10) further comprises a straight shaft (105), the pump body assembly further comprises a bearing, the bearing is sleeved on the straight shaft (105), the air supply inlet (104) is formed at the position where the straight shaft (105) is sleeved on the bearing, and a bearing air supply port is formed in the bearing.

4. The pump body assembly according to claim 3, wherein a second annular groove (1051) extending along the circumferential direction of the straight shaft (105) is formed on the outer circumferential wall of the straight shaft (105), the air supply inlet (104) is formed in the second annular groove (1051), and the refrigerant air flow introduced from the bearing air supply port can enter the air supply channel (103) through the second annular groove (1051) and the air supply inlet (104) in sequence.

5. The pump block assembly according to claim 3, wherein the charge air passage (103) extends in an axial direction of the crankshaft (10) and communicates with the charge air inlet (104) and the charge air outlet (102).

6. The pump block assembly according to claim 5, wherein the supplement inlet (104) and the supplement outlet (102) both extend in a radial direction of the crankshaft (10), and the supplement inlet (104) and the supplement passage (103) and the supplement outlet (102) and the supplement passage (103) are connected by a fillet.

7. The pump body assembly according to claim 1, wherein the roller blade (20) includes a blade portion integrally formed with the roller portion.

8. An oscillating rotary compressor, characterized by comprising a pump body assembly according to any one of claims 1 to 7.

9. An air conditioner characterized by comprising the oscillating rotary compressor set forth in claim 8.

Technical Field

The invention belongs to the technical field of compressor manufacturing, and particularly relates to a crankshaft, a swing rotary compressor and an air conditioner.

Background

Along with the improvement of living standard of people, the requirement on air conditioning is higher and higher, the performance and the cost of an air conditioning system are mainly considered, and some special system requirements are derived, for example, when the environmental temperature is very high, a large amount of refrigeration and heating are needed, the existing conventional oscillating compressor is difficult to meet the requirements, the requirement on large flow rate needs to be met through air supplement, and the requirement is also called enthalpy increase in the industry.

A swing rotary compressor is different from a conventional rolling rotary compressor, blades and rollers (pistons) of the swing rotary compressor are integrated, the existing swing compressor air supplement mode is divided into a blade air supplement mode, a cylinder air supplement mode, a bearing air supplement mode and a partition plate air supplement mode, the air supplement modes of the swing compressor are divided into a plurality of types including cylinders and bearing air supplement, a conventional bearing air supplement structure is shown in figures 6 to 7, a pump body assembly is composed of a crankshaft 1, an upper bearing 2, a lower bearing 4, a cylinder 3 and blades 5, a lateral hole is formed in the side face of the upper bearing 2, an air supplement port is formed in the end face of the upper bearing 2, as shown in figure 8, the lateral hole is communicated with the air supplement hole, under a high-temperature environment, the air conditioner needs large refrigerating capacity, the displacement of the limited compressor is limited, the conventional compressor hardly meets the requirement of large refrigerating capacity, and a certain air supplement amount is added to an air supplement cavity of the compressor through a system to meet the requirement of the large refrigerating capacity. In the conventional bearing air supplement hole, firstly, the size of the air supplement hole cannot be too large due to the requirement of limited roller sealing distance, and the air supplement hole has influence on the air supplement amount; secondly, due to structural limitation, the air supply angle is basically about 90 degrees, and pipelines of air conditioning systems in different areas are various, so that the air supply structure is difficult to be considered, and thirdly, the axial position of air supply is fixed, the thickness relation of a bearing is limited, the axial position is difficult to adjust, and the air supply structure can only be fixed in a pump body area (as shown in a figure 9); the blades supplement air to reduce the thickness of the blades, and the thickness and the strength of the blades are reduced because the blades are thin, and meanwhile, the air supplement position is limited; the air supply position of the air cylinder is limited, so that the diversified requirements of the air conditioning system of a client are difficult to meet.

Disclosure of Invention

Therefore, the invention provides a crankshaft, a swing rotary compressor and an air conditioner, which can overcome the defects of the related technology, such as the contradiction between the air supplementing position, the size of an air supplementing port and the sealing property.

In order to solve the above problems, the present invention provides a pump assembly, which includes a crankshaft and a roller blade, wherein the crankshaft includes an eccentric portion, an air supply outlet is formed on an outer circumferential wall of the eccentric portion, the roller blade is sleeved on the eccentric portion, a first annular groove extending along a circumferential direction of the eccentric portion is further formed on a hole wall of a central hole on the roller portion of the roller blade, an air supply port is formed in the first annular groove, and a refrigerant flowing out of the air supply outlet can enter a compression cavity of a compressor through the first annular groove and the air supply port in sequence.

Preferably, the lip of the gas supplementing outlet facing to one side of the first annular groove is flared.

Preferably, the crankshaft is provided with an air supply channel, one end of the air supply channel is communicated with the air supply outlet, the other end of the air supply channel is communicated with the air supply inlet, the crankshaft further comprises a straight shaft, the pump body assembly further comprises a bearing, the bearing is sleeved on the straight shaft, the air supply inlet is formed in the position where the straight shaft is sleeved on the bearing, and the bearing is provided with a bearing air supply port.

Preferably, a second annular groove extending along the circumferential direction of the straight shaft is configured on the outer circumferential wall of the straight shaft, the air supply inlet is configured in the second annular groove, and the refrigerant airflow introduced by the bearing air supply port can enter the air supply channel through the second annular groove and the air supply inlet in sequence.

Preferably, the air supply passage extends along the axial direction of the crankshaft and is communicated with the air supply inlet and the air supply outlet.

Preferably, the air supply inlet and the air supply outlet extend along the radial direction of the crankshaft, and the air supply inlet is connected with the air supply channel and the connection part of the air supply outlet and the air supply channel by round corners.

Preferably, the roller blade includes a blade portion integrally formed with the roller portion.

The invention also provides a swinging rotary compressor which comprises the pump body assembly.

The invention also provides an air conditioner which comprises the swing rotary compressor.

According to the crankshaft, the swing rotary compressor and the air conditioner, the first annular groove is formed in the hole wall of the central hole of the roller part of the roller blade, so that the air supplement outlet of the crankshaft can be always communicated with the air supplement port through the first annular groove in the rotating process, and an air supplement flow path is not arranged on an air cylinder, a bearing and a blade as in the prior art, so that the defects of contradiction among an air supplement position, the size of the air supplement port and the sealing performance in the related technology are overcome.

Drawings

FIG. 1 is a schematic view of the internal structure of a pump body assembly according to an embodiment of the present invention;

FIG. 2 is a left side view of FIG. 1 (with parts omitted);

FIG. 3 is a schematic view of the flow of make-up air after the crankshaft and roller blades of FIG. 1 are assembled;

FIG. 4 is a schematic structural view of the roller blade of FIG. 1;

FIG. 5 is a schematic illustration of the crankshaft of FIG. 1;

FIG. 6 is a schematic diagram of a prior art pump block assembly;

FIG. 7 is a left side view of FIG. 6 (with parts omitted, a being about 90) showing the view;

FIG. 8 is a schematic view of a prior art upper bearing air supplement structure of a compressor;

fig. 9 is a schematic of the position of the pump section of a prior art compressor.

The reference numerals are represented as:

10. a crankshaft; 101. an eccentric portion; 102. an air supply outlet; 103. a gas supply channel; 104. a gas supply inlet; 105. a straight shaft; 1051. a second annular groove; 20. a roller blade; 201. a first annular groove; 202. an air supplement port; 300. a compression chamber; 400. an upper bearing; 500. a cylinder; 600. a lower bearing; 1. a crankshaft; 2. an upper bearing, 3 and a cylinder; 4. a lower bearing; 5. a blade.

Detailed Description

Referring to fig. 1 to 5 in combination, according to an embodiment of the present invention, there is provided a pump body assembly, including a cylinder 500, a crankshaft 10, and a roller blade 20, where the roller blade 20 divides an internal space of the cylinder 500 into a compression chamber 300 and an air suction chamber, two axial ends of the crankshaft 10 are rotatably connected to two axial ends of the cylinder 500 through bearings, specifically, an upper bearing 400 and a lower bearing 600, the crankshaft 10 includes an eccentric portion 101, an additional air outlet 102 is formed on an outer circumferential wall of the eccentric portion 101, the roller blade 20 is sleeved on the eccentric portion 101, a first annular groove 201 extending along a circumferential direction of the eccentric portion 101 is further formed on a wall of a central hole on the roller portion of the roller blade 20, an additional air port 202 is formed in the first annular groove 201, and a refrigerant flowing out from the additional air outlet 102 can sequentially pass through the first annular groove 201, The inlet port 202 enters the compression chamber 300 of the compressor. In the technical scheme, the first annular groove 201 is formed on the hole wall of the central hole of the roller part of the roller blade 20, so that the air supply outlet 102 of the crankshaft 10 can be always communicated with the air supply port 202 through the first annular groove 201 in the rotating process, and an air supply flow path is not arranged on a cylinder, a bearing and a blade as in the prior art, thereby overcoming the defects of contradiction between an air supply position, the size of the air supply port and the sealing property in the related art. It should be noted that the air make-up outlet 102 is arranged at the eccentric portion 101, so that the flow area (i.e. the size of the air make-up outlet 102) can be designed to be larger without a large adverse effect on the corresponding component structure.

In some embodiments, the lip of the gas supply outlet 102 facing the first annular groove 201 is flared, so that the gas supply outlet 102 can be assembled with the first annular groove 201 in a relatively loose manner in terms of axial dimension, and a gas supply flow path can be unblocked without special alignment.

In some embodiments, the crankshaft 10 is configured with an air supply passage 103, one end of the air supply passage 103 is communicated with the air supply outlet 102, the other end of the air supply passage 103 is communicated with an air supply inlet 104, the crankshaft 10 further includes a straight shaft 105, a bearing of the pump body assembly is sleeved on the straight shaft 105, the air supply inlet 104 is configured at a position where the straight shaft 105 is sleeved on the bearing, the bearing is configured with a bearing air supply port (not specifically shown in the figure), in a specific embodiment, the bearing may be an upper bearing 400, and in some cases, the bearing may also be the lower bearing 600.

In some embodiments, a second annular groove 1051 extending along the circumferential direction of the straight shaft 105 is configured on the outer circumferential wall of the straight shaft 105, the air supply inlet 104 is configured in the second annular groove 1051, and the refrigerant airflow introduced by the bearing air supply port can sequentially enter the air supply channel 103 through the second annular groove 1051 and the air supply inlet 104, so that the positions of the bearing air supply port and the second annular groove 1051 in the circumferential direction can be flexibly selected in the full circumferential range, that is, the positions can be flexibly adjusted according to an air supply joint connected with the bearing air supply port outside the pump body assembly and the pipeline arrangement direction, thereby preventing interference in pipeline arrangement.

The air supply channel 103 extends along the axial direction of the crankshaft 10 and is communicated with the air supply inlet 104 and the air supply outlet 102, the axial extension length of the air supply channel 103 can be flexibly selected according to actual needs to adapt to the arrangement position of the air supply joint on the outer wall of the compressor, namely the position adjustment of an external air supply port is more flexible, and the air supply channel comprises a shell body circumferential position adjustment (tangential direction) and an axial direction position adjustment (vertical direction), and covers the whole pump body area.

In some embodiments, the supplement gas inlet 104 and the supplement gas outlet 102 both extend along the radial direction of the crankshaft 10, and the supplement gas inlet 104 and the supplement gas channel 103 and the supplement gas outlet 102 and the supplement gas channel 103 are connected by a rounded corner, so that the supplement gas flow can flow more smoothly.

The roller blade 20 includes a blade portion integrally formed with the roller portion.

In conclusion, the pump body assembly realizes random adjustment of the position of the external air supplementing port through improvement of a corresponding air supplementing mode, comprises circumferential position adjustment (tangential direction) and axial direction position adjustment (up-down direction) of the shell, and covers the whole pump body area; the roller bearing is not influenced by the wall thickness of the roller, and the leakage condition caused by insufficient wall thickness of the roller during air supplement of the conventional bearing is avoided; the size of the air supplementing port can be adjusted according to the requirement.

According to an embodiment of the invention, there is also provided an oscillating rotary compressor including the pump body assembly.

According to an embodiment of the present invention, there is also provided an air conditioner including the above-described swing rotary compressor.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.