CN212454821U

CN212454821U - Pump body subassembly and rotary compressor

Info

Publication number: CN212454821U
Application number: CN202020531154.4U
Authority: CN
Inventors: 高志刚; 陈琳; 许倩; 蔡永松; 李赛
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhengzhou Landa Compressor Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhengzhou Landa Compressor Co Ltd
Priority date: 2020-04-11
Filing date: 2020-04-11
Publication date: 2021-02-02
Anticipated expiration: 2030-04-11

Abstract

The utility model discloses a pump body assembly and rotary compressor, wherein the pump body assembly comprises a pump case and a crankshaft which rotate relatively, the crankshaft comprises a rotating shaft and an eccentric part, a slip sheet is arranged in the pump case, the crankshaft and the slip sheet divide an inner cavity of the pump case into a high-pressure cavity and a low-pressure cavity, the crankshaft is provided with an air inlet channel communicated with the low-pressure cavity and an air outlet channel communicated with the high-pressure cavity; the air inlet channel and the air outlet channel respectively extend out of the pump shell from the rotating shaft and are communicated with the outside. Rotary compressor, simplified pump body structure, realize the design of portableization.

Description

Pump body subassembly and rotary compressor

Technical Field

The utility model belongs to the refrigeration field especially relates to a pump body subassembly and rotary compressor.

Background

The prior rotary compressor is basically composed of an upper flange, a lower flange, an air cylinder, a roller, a crankshaft, a sliding vane and other structures, and a pump body assembly is a single-component system, so that the length of the compressor is increased invisibly, and the manufacture of the portable compressor is not facilitated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pump body subassembly and rotary compressor simplify pump body structure, realize that the compressor is portable.

In order to achieve the above object, the utility model discloses a concrete technical scheme of pump body subassembly and rotary compressor as follows:

a pump body assembly comprises a pump shell and a crankshaft which rotate relatively, wherein the crankshaft comprises a rotating shaft and an eccentric part, a slide sheet is arranged in the pump shell, the crankshaft and the slide sheet divide an inner cavity of the pump shell into a high-pressure cavity and a low-pressure cavity, and the crankshaft is provided with an air inlet channel communicated with the low-pressure cavity and an air outlet channel communicated with the high-pressure cavity; the air inlet channel and the air outlet channel respectively extend out of the pump shell from the rotating shaft and are communicated with the outside.

Furthermore, the eccentric part is provided with a sealing bus in line contact with the inner wall of the pump shell on the cylindrical surface, and the air outlet end of the air inlet channel and the air inlet end of the air outlet channel are arranged on two sides of the sealing bus side by side.

Furthermore, the end of giving vent to anger of intake duct and the inlet end of giving vent to anger the way all set up on the terminal surface of eccentric portion.

Furthermore, the air outlet channel is provided with an adjusting valve; when the pressure of the air outlet channel reaches a set pressure value, the regulating valve is opened, and the air outlet channel discharges high-pressure refrigerants.

Furthermore, the regulating valve comprises an elastic part and a valve core, and the valve core is driven by the elastic part to block the air outlet channel; when the pushing force of the refrigerant in the air outlet channel to the valve core is larger than the pulling force of the elastic part, the valve core is retreated, and the air outlet channel is communicated.

Furthermore, the supporting plate is provided with a fixing hole for fixedly connecting the rotating shaft, and the supporting plate is provided with a gas path communicated with the gas inlet channel in the fixing hole.

Further, the crankshaft is fixed to the support plate, and the pump housing rotates along the rotating shaft.

Further, the pump casing includes a rotor; the rotor is driven by the stator to drive the sliding sheet to rotate around the crankshaft.

Further, an inner cylinder is sleeved on the inner side of the rotor and is penetrated by a sliding groove for sliding the sliding sheet.

A rotary compressor comprises the pump body assembly.

The utility model discloses a pump body subassembly and rotary compressor have following advantage:

1. the existing upper flange, the existing lower flange and the existing crankshaft are combined, the crankshaft air inlet and exhaust mode is adopted, the crankshaft is additionally provided with the air passage, air flow can conveniently enter and exit, the structure of the pump body is simplified, and portability is realized.

2. The pump body assembly is arranged in the existing rotor, the pump body and the motor are combined into a whole, the structure of the pump body is further simplified, and portability is realized.

Drawings

Fig. 1 is a sectional view of a rotary compressor according to the present invention;

FIG. 2 is a schematic structural view of the pump body assembly of the present invention;

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

fig. 4 is a schematic view of the operation of the inner cylinder of the present invention.

The notation in the figure is:

1. a housing; 11. a support plate; 111. a fixing hole; 112. a gas circuit; 2. a stator; 3. a pump housing; 31. a rotor; 32. an inner cylinder; 321. a chute; 33. a cover plate; 4. a crankshaft; 41. an eccentric portion; 42. a rotating shaft; 43. an air inlet channel; 44. an air outlet channel; 5. sliding blades; 6. a high pressure chamber; 7. a low pressure chamber; 8. adjusting a valve; 81. a spring; 82. a valve core.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the following description is made in detail with reference to the accompanying drawings.

As shown in fig. 1, the rotary compressor of the present invention includes a housing 1, a stator 2 and a pump body assembly. The welding has layer board 11 in the casing 1, and stator 2 and pump body subassembly are all installed on layer board 11. The stator 2 drives the pump body assembly to work, and the pump body assembly compresses a refrigerant.

As shown in fig. 2 and 3, the pump body assembly includes a pump housing 3 and a crankshaft 4 that rotate relative to each other. The crankshaft 4 includes an eccentric portion 41, and rotating shafts 42 provided at both ends of the eccentric portion 41. The eccentric portion 41 is disposed in the pump housing 3, and the two rotating shafts 42 respectively penetrate the pump housing 3. Be provided with gleitbretter 5 in the pump case 3, gleitbretter 5 is driven and is supported all the time on bent axle 4 to bent axle 4 and gleitbretter 5 divide the pump case 3 inner chamber into high-pressure chamber 6 and low pressure chamber 7. The crankshaft 4 is provided with an inlet channel 43 communicating with the low pressure chamber 7 and an outlet channel 44 communicating with the high pressure chamber 6. The inlet passage 43 and the outlet passage 44 extend from the rotary shaft 42 to the outside of the pump housing 3, respectively, and are connected to the outside.

In order to ensure the independence of the high pressure chamber 6 and the low pressure chamber 7, the pump body assembly is identical to the prior art and is provided with two sealing points. The rotating shaft 42 is coaxially arranged along the inner cavity of the pump shell 3, and the eccentric part 41 is provided with a sealing generatrix which is in line contact with the inner wall of the pump shell 3 on the cylindrical surface as a first sealing point. One end of the sliding sheet 5 is inserted into the sliding groove 321 on the inner wall of the pump shell 3 and is driven by the spring 81 to slide along the sliding groove 321; and the other end of the sliding sheet 5 is close to the crankshaft 4 to form a second sealing point. Through the sealing of two sealed points like this, guaranteed high-pressure chamber 6 and low pressure chamber 7 independent to along with gleitbretter 5 rotates along bent axle 4, high-pressure chamber 6 contracts and low pressure chamber 7 grow, and then high-pressure chamber 6 gas compression is discharged from gas outlet channel 44, and low pressure gas is from the inlet channel 43 air admission.

As shown in fig. 4, in order to ensure the efficiency of the pump block assembly, the air outlet end of the air inlet channel 43 and the air inlet end of the air outlet channel 44 are arranged side by side on both sides of the seal bus. Thus, the air outlet end of the air inlet channel 43 and the air inlet end of the air outlet channel 44 are arranged at the two ends of the low pressure cavity 7 and the high pressure cavity 6, and the maximum compression of the cylinder body refrigerant is ensured. And for convenience of processing, the outlet end of the inlet duct 43 and the inlet end of the outlet duct 44 are both provided on the end surface of the eccentric portion 41.

In order to obtain the required pressure, the outlet channel 44 is provided with a regulating valve 8, when the pressure of the outlet channel 44 reaches the set pressure value, the regulating valve 8 is opened, and the outlet channel 44 discharges the high-pressure refrigerant. The regulating valve 8 comprises a spring 81 and a valve core 82, the valve core 82 is driven by the spring 81 as an elastic part to block the air outlet channel 44, when the pushing force of the cooling medium on the valve core 82 in the air outlet channel 44 is greater than the pulling force of the spring 81, the valve core 82 is retreated, and the air outlet channel 44 is communicated.

To facilitate connection to external piping, the crankshaft 4 is fixed to the support plate 11, and the pump housing 3 is rotated about the rotation shaft 42. The supporting plate 11 is provided with a fixing hole 111, and the rotating shaft 42 at the lower end of the crankshaft 4 is in interference fit with the fixing hole 111, so that the pump body assembly is installed and fixed. The supporting plate 11 is further provided with an air passage 112 in the fixing hole 111, the air inlet 43 is arranged in the rotating shaft 42 at the lower end, and the air passage 112 is communicated with the air inlet 43 along with the insertion of the rotating shaft 42. And correspondingly, the gas outlet channel 44 is arranged in the upper end of the rotating shaft 42. Thus, the crankshaft 4 is fixed, so that the upper and lower pipelines are conveniently installed.

To facilitate the manufacture of the pump housing 3, the pump housing 3 includes an inner cylinder 32, and a sliding groove 321 for sliding the sliding vane 5 penetrates through a side wall of the sliding inner cylinder 32. The two ends of the inner cylinder 32 are respectively connected with a cover plate 33 through screws, and the cover plate 33 is provided with a positioning hole sleeved outside the rotating shaft 42. The inner cylinder 32 is fixed in the rotor 31. The rotor 31 is formed by laminating magnetic steel sheets, a magnetic steel groove is formed in the rotor 31, magnetic steel is placed in the magnetic steel groove, therefore, magnetic induction lines are cut through the magnetic steel, and the stator drives the rotor 31 and drives the inner cylinder 32 and the sliding sheet 5 to rotate.

Thus, the pump body assembly is arranged in the rotor 31 to form a brand new structure, and the space of the compressor is further saved.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof 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, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. A pump body assembly comprises a pump shell (3) and a crankshaft (4) which rotate relatively, wherein the crankshaft (4) comprises a rotating shaft (42) and an eccentric part (41), a slip sheet (5) is arranged in the pump shell (3), and the crankshaft (4) and the slip sheet (5) divide an inner cavity of the pump shell (3) into a high-pressure cavity (6) and a low-pressure cavity (7), and the pump body assembly is characterized in that the crankshaft (4) is provided with an air inlet channel (43) communicated with the low-pressure cavity (7) and an air outlet channel (44) communicated with the high-pressure cavity (6); the air inlet channel (43) and the air outlet channel (44) respectively extend from the rotating shaft (42) to the outside of the pump shell (3).

2. The pump block assembly according to claim 1, wherein the eccentric portion (41) is provided in a cylindrical surface with a seal generatrix in line contact with an inner wall of the pump housing (3), and the outlet end of the inlet channel (43) and the inlet end of the outlet channel (44) are arranged side by side on both sides of the seal generatrix.

3. The pump block assembly according to claim 2, wherein the outlet end of the inlet channel (43) and the inlet end of the outlet channel (44) are both provided on the end face of the eccentric portion (41).

4. The pump block assembly according to claim 1, characterized in that the outlet channel (44) is provided with a regulating valve (8); when the pressure of the air outlet channel (44) reaches a set pressure value, the regulating valve (8) is opened, and the air outlet channel (44) discharges high-pressure refrigerant.

5. The pump block assembly according to claim 4, characterized in that the regulating valve (8) comprises an elastic member and a valve core (82), the valve core (82) is driven by the elastic member to block the air outlet channel (44); when the pushing force of the refrigerant in the air outlet channel (44) to the valve core (82) is larger than the pulling force of the elastic part, the valve core (82) is retreated, and the air outlet channel (44) is communicated.

6. Pump block assembly according to claim 1, characterized in that the crankshaft (4) is fixed to the carrier (11) and the pump housing (3) rotates about the axis of rotation (42).

7. The pump body assembly according to claim 6, wherein the support plate (11) is provided with a fixing hole (111) for fixedly connecting the rotating shaft (42), and an air passage (112) communicated with the air inlet channel (43) is arranged in the fixing hole (111) of the support plate (11).

8. Pump body assembly according to claim 6, characterized in that the pump housing (3) comprises a rotor (31); the rotor (31) is driven by the stator (2) to drive the sliding sheet (5) to rotate around the crankshaft (4).

9. Pump body assembly according to claim 8, characterized in that the rotor (31) is internally sheathed with an internal cylinder (32), the internal cylinder (32) being crossed by a sliding slot (321) for the sliding of the sliding vane (5).

10. A rotary compressor comprising a pump body assembly according to any one of claims 1 to 9.