CN114151348A

CN114151348A - Pump body subassembly, compressor and air conditioner

Info

Publication number: CN114151348A
Application number: CN202111584005.XA
Authority: CN
Inventors: 刘庭显; 董辉; 阙沛祯; 胡艳军
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-03-08

Abstract

The application provides a pump body subassembly, compressor and air conditioner. The pump body assembly comprises a crankshaft (1), a low-pressure cylinder (2), a high-pressure cylinder (3), an upper flange (4) and a flange cover plate (5), wherein a first medium-pressure cavity (6) communicated with an exhaust port of the low-pressure cylinder (2) is formed in the top of the upper flange (4), the upper end face of the upper flange (4) is covered by the flange cover plate (5), the first medium-pressure cavity (6) is sealed, a tool withdrawal groove is formed in the connecting position of a flange shaft neck (8) and the upper end face of the upper flange (4), the flange cover plate (5) and the tool withdrawal groove are matched to form an oil storage cavity (7), a flange oil hole (9) is formed in the flange shaft neck (8), a main oil hole (10) is formed in the crankshaft (1), and the main oil hole (10) is communicated with the oil storage cavity (7) through the flange oil hole (9). According to the pump body assembly, the high-pressure refrigerant can be effectively prevented from leaking into the medium-pressure cavity, the power consumption of the compressor is reduced, and the performance of the compressor is improved.

Description

Pump body subassembly, compressor and air conditioner

Technical Field

The application relates to the technical field of air conditioners, in particular to a pump body assembly, a compressor and an air conditioner.

Background

The double-stage enthalpy-increasing compressor can effectively solve the problems of poor low-temperature heating effect, slow high-temperature refrigeration, low energy efficiency and the like commonly existing in common household air conditioners and heat pump water heaters. Compared with a conventional two-stage compressor pump body structure with a low-pressure-stage cylinder arranged at the lower part, the related art discloses a two-stage enthalpy-increasing compressor with a low-pressure cylinder arranged at the upper part, wherein a middle-pressure cavity above the low-pressure-stage cylinder of the compressor consists of a flange and a flange cover plate, the flange and the flange cover plate are locked through screws, the locking of the screws can cause a gap to exist between the flange and the flange cover plate, and a high-pressure refrigerant in a shell can leak into the middle-pressure cavity through the gap to influence the performance of the compressor.

Disclosure of Invention

Therefore, the technical problem that this application will be solved lies in providing a pump body subassembly, compressor and air conditioner, can effectively avoid high-pressure refrigerant to leak into the middling pressure chamber, reduces the compressor consumption, improves the compressor performance.

In order to solve the problem, the application provides a pump body subassembly, including the bent axle, the low pressure jar, the high pressure jar, go up flange and flange apron, go up the first middling pressure chamber of gas vent intercommunication with the low pressure jar is seted up at the top of flange, the up end at last flange is established to flange apron lid, and seal first middling pressure chamber, it has the tool withdrawal groove at the flange axle journal and the hookup location of up end to go up the flange, flange apron forms the oil storage chamber with the tool withdrawal groove cooperation, be provided with the flange oilhole on the flange axle journal, be provided with main oilhole on the bent axle, main oilhole passes through flange oilhole and oil storage chamber intercommunication.

Preferably, the lower end inner edge of the flange cover plate is located radially inward of the outer edge of the relief groove.

Preferably, the flange cover plate is provided with an oil passage extending along the radial direction, the oil passage penetrates through the flange cover plate and is communicated with the oil storage cavity, and the oil passage is located above the bottom surface of the flange cover plate and is isolated from the first medium-pressure cavity.

Preferably, the oil passage is a radial oil hole, and the radial oil hole is arranged corresponding to the flange oil hole in the axial direction of the crankshaft.

Preferably, the oil passage is a radial oil groove, the radial oil groove is formed in the upper end face of the flange cover plate, an annular sink groove is further formed in the inner peripheral side of the upper end face of the flange cover plate, and the radial oil groove is communicated with the sink groove.

Preferably, the part of the flange cover plate, which is positioned on the upper side of the flange oil hole, is matched with the flange shaft neck, the part of the flange cover plate, which is positioned on the lower side of the flange oil hole, is provided with a flow passage, and the flange oil hole is communicated with the oil storage cavity through the flow passage.

Preferably, the crankshaft is provided with a lateral oil hole, the lateral oil hole and the flange oil hole are located at the same height along the axial direction of the crankshaft, and the lateral oil hole can communicate the flange oil hole and the main oil hole.

Preferably, the lateral oil hole is a pressure relief oil hole, an annular oil groove is formed in the outer peripheral wall of the crankshaft, and the lateral oil hole is located in the area where the annular oil groove is located and is communicated with the annular oil groove.

Preferably, the pump body assembly further comprises a first partition plate, a second partition plate and a lower flange, the first partition plate and the second partition plate are located between the low pressure cylinder and the high pressure cylinder, the lower flange is located on the lower side of the high pressure cylinder, a second intermediate pressure cavity is formed between the first partition plate and the second partition plate, and the second intermediate pressure cavity is communicated with an exhaust port of the low pressure cylinder.

According to another aspect of the present application, there is provided a compressor, comprising the pump body assembly as described above.

According to another aspect of the present application, an air conditioner is provided, which comprises the pump body assembly or the compressor.

The application provides a pump body subassembly, which comprises a crankshaft, the low pressure jar, the high pressure jar, go up flange and flange apron, go up the top of flange and offer the first middling pressure chamber that communicates with the gas vent of low pressure jar, the up end at last flange is established to flange apron lid, and seal first middling pressure chamber, it has the tool withdrawal groove at the flange axle journal and the hookup location of up end to go up the flange, flange apron forms the oil storage chamber with the cooperation of tool withdrawal groove, be provided with the flange oilhole on the flange axle journal, be provided with main oilhole on the bent axle, main oilhole passes through flange oilhole and oil storage chamber intercommunication. This pump body subassembly utilizes tool withdrawal groove and flange apron cooperation to form the oil storage chamber, and make the oil storage chamber be located flange apron and upper flange complex fit clearance downside, after the refrigeration oil of main oilhole gets into the oil storage chamber through the flange oilhole, refrigeration oil level height rises gradually, when refrigeration oil level height surpassed the flange apron and the contact surface of upper flange, refrigeration oil gets into the contact surface clearance and seals it, make through the oil film seal between the contact surface of upper flange of low-pressure jar top middling pressure chamber part and flange apron, high-pressure refrigerant can't reveal to first middling pressure chamber in the casing, the intermediate pressure in the first middling pressure chamber is optimum intermediate pressure all the time, the compressor consumption has been reduced, make the compressor move under optimum all the time, compressor working property has been improved.

Drawings

FIG. 1 is a schematic diagram of a pump block assembly according to one embodiment of the present application;

FIG. 2 is a schematic refrigerant flow diagram of a pump block assembly according to one embodiment of the present application;

FIG. 3 is a schematic flow diagram of the coolant of the pump body assembly according to one embodiment of the present application;

FIG. 4 is an enlarged schematic view of FIG. 3 at A;

FIG. 5 is an exploded view of the upper flange and the flange cover of the pump block assembly according to one embodiment of the present application;

FIG. 6 is a schematic view of a flange cover of the pump block assembly according to one embodiment of the present application;

FIG. 7 is a schematic view of a flange cover of the pump block assembly according to one embodiment of the present application;

FIG. 8 is a diagram comparing the positions of the crankshaft relief oil holes of the related art and the embodiment of the present application.

The reference numerals are represented as:

1. a crankshaft; 2. a low pressure cylinder; 3. a high pressure cylinder; 4. an upper flange; 5. a flange cover plate; 6. a first intermediate pressure chamber; 7. an oil storage chamber; 8. a flange journal; 9. a flange oil hole; 10. a main oil hole; 11. an oil road channel; 12. an overflow channel; 13. a lateral oil hole; 14. an annular oil groove; 15. a first separator; 16. a second separator; 17. a lower flange; 18. a second intermediate pressure chamber.

Detailed Description

With reference to fig. 1 to 8, according to an embodiment of the present disclosure, the pump body assembly includes a crankshaft 1, a low pressure cylinder 2, a high pressure cylinder 3, an upper flange 4 and a flange cover plate 5, a first intermediate pressure chamber 6 communicated with an exhaust port of the low pressure cylinder 2 is formed at a top of the upper flange 4, the flange cover plate 5 covers an upper end surface of the upper flange 4 and seals the first intermediate pressure chamber 6, the upper flange 4 has a relief groove at a connection position of a flange journal 8 and the upper end surface, the flange cover plate 5 and the relief groove cooperate to form an oil storage chamber 7, the flange journal 8 is provided with a flange oil hole 9, the crankshaft 1 is provided with a main oil hole 10, and the main oil hole 10 is communicated with the oil storage chamber 7 through the flange oil hole 9.

This pump body subassembly utilizes tool withdrawal groove and the cooperation of flange apron 5 to form oil storage chamber 7, and make oil storage chamber 7 be located flange apron 5 and upper flange 4 complex fit clearance downside, after the refrigeration oil of main oilhole 10 gets into oil storage chamber 7 through flange oilhole 9, refrigeration oil level height rises gradually, when the refrigeration oil level height surpassed flange apron 5 and upper flange 4's contact surface, refrigeration oil gets into the contact surface clearance and seals it, make through oil film seal between the contact surface of upper flange 4 of medium pressure chamber component part above the low pressure cylinder 2 and flange apron 5, high-pressure refrigerant can't reveal to first medium pressure chamber 6 in the casing, the intermediate pressure in first medium pressure chamber 6 is optimum intermediate pressure all the time, the compressor power consumption has been reduced, make the compressor operate under optimum state all the time, the compressor working property has been improved.

In one embodiment, the lower end inner edge of the blind flange 5 is located radially inward of the outer edge of the relief groove. In the present embodiment, when the level of the refrigerant oil in the oil storage chamber 7 reaches the contact surface between the flange cover plate 5 and the upper flange 4, since a part of the lower end surface of the flange cover plate 5 is located at the upper side of the oil storage chamber 7, the refrigerant oil can be guided to a certain extent, so that the refrigerant oil can more easily enter between the contact surfaces between the upper flange 4 and the flange cover plate 5 under the blocking action of the flange cover plate 5, and an oil film is formed.

In one embodiment, the flange cover 5 is provided with a radially extending oil passage 11, the oil passage 11 extends through the flange cover 5 and communicates with the oil reservoir chamber 7, and the oil passage 11 is located above the bottom surface of the flange cover 5 and is isolated from the first intermediate pressure chamber 6. In the embodiment, by arranging the oil passage 11, when the oil level in the oil storage chamber 7 exceeds the lowest height of the oil passage 11 on the flange cover plate 5, the frozen oil can flow out along the oil passage 11 and then is prevented from flowing into an oil pool along the pump body, so that oil circulation is realized.

In the present embodiment, the upper flange 4 and the flange cover plate 5 are fixed by screws on the outer peripheral side of the first intermediate pressure chamber 6, and the sealing between the upper flange 4 and the flange cover plate 5 on the outer peripheral side of the first intermediate pressure chamber 6 is achieved by the locking force of the screws, and in order to ensure the sealing property, both the upper end surface of the upper flange 4 and the lower end surface of the flange cover plate 5 are finish-machined surfaces.

In one embodiment, the oil passage 11 is a radial oil hole provided in correspondence with the flange oil hole 9 in the axial direction of the crankshaft 1. In this embodiment, the radial oil hole is disposed at the middle position of the axial direction of the flange cover plate 5 and isolated from the first intermediate pressure chamber 6 below, so that the high-pressure refrigerant can be effectively prevented from entering the first intermediate pressure chamber 6 through the radial oil hole, and meanwhile, the refrigerant oil entering the oil storage chamber 7 from the main oil hole 10 can smoothly enter the housing through the radial oil hole, thereby realizing the circulation of the refrigerant oil.

In one embodiment, the oil passage 11 is a radial oil groove, the radial oil groove is disposed on the upper end surface of the flange cover plate 5, an annular sink groove is further disposed on the inner peripheral side of the upper end surface of the flange cover plate 5, and the radial oil groove is communicated with the sink groove. In this embodiment, still be provided with the annular heavy groove with radial oil groove intercommunication in the interior periphery side of flange apron 5, when the oil storage intracavity freezing oil was too much, the freezing oil flowed out in flange apron 5 and the 8 outer wall surface clearances of flange axle journal, got into and carried out certain buffering in the 5 upper surface heavy grooves of flange apron, flowed out along radial oil groove afterwards, flowed into the casing oil bath along the pump body outer wall surface at last, heavy groove and radial oil groove have prevented that freezing oil from directly flowing into the exhaust hole along the 5 upper surface of flange apron, increase exhaust resistance and compressor consumption, reduce compressor performance.

In one embodiment, the part of the flange cover plate 5 positioned on the upper side of the flange oil hole 9 is matched with the flange shaft journal 8, the part of the flange cover plate 5 positioned on the lower side of the flange oil hole 9 is provided with a flow passage 12, and the flange oil hole 9 is communicated with the oil storage chamber 7 through the flow passage 12. The overflow channel 12 below can ensure that the refrigerant oil smoothly enters the oil storage cavity 7 from the flange oil hole 9, so that the oil level in the oil storage cavity 7 can quickly rise, oil film sealing is formed between the contact surfaces of the upper flange 4 and the flange cover plate 5 in time, and the phenomenon that the high-pressure refrigerant leaks into the first medium-pressure cavity 6 through the contact gap at the position to influence the performance of the compressor is avoided. In order to facilitate the installation of the flange cover plate 5 on the flange journal 8, the part of the flange cover plate 5 located above the flange oil hole 9 is in clearance fit with the flange journal 8.

In one embodiment, the crankshaft 1 is provided with a lateral oil hole 13, the lateral oil hole 13 is located at the same height as the flange oil hole 9 along the axial direction of the crankshaft 1, and the lateral oil hole 13 can communicate the flange oil hole 9 and the main oil hole 10.

In one embodiment, the lateral oil holes 13 are relief oil holes, an annular oil groove 14 is formed in the outer peripheral wall of the crankshaft 1, and the lateral oil holes 13 are located in the region of the annular oil groove 14 and communicate with the annular oil groove 14. In this embodiment, since the lateral oil hole 13 is communicated with the annular oil groove 14, and the entire circumferential direction of the annular oil groove 14 can be filled with the refrigeration oil, the flange oil hole 9 can be always communicated with the main oil hole 10 through the annular oil groove 14 and the lateral oil hole 13, and the main oil hole 10 is ensured to always supply oil to the flange oil hole 9.

Referring to fig. 6, a comparison graph of the conventional crankshaft and the crankshaft of the embodiment of the present application shows that the conventional crankshaft pressure relief hole is located at the upper portion of the crankshaft long axis and is not in contact with the inner wall surface of the flange journal 8, when the compressor runs at high frequency, the refrigerant oil is thrown out of the pressure relief hole, the whole body is umbrella-shaped, and at the moment, the exhaust flow of the compressor impacts the refrigerant oil, so that the oil output rate of the compressor is increased.

In the embodiment of the present application, the lateral oil hole 13 is used as a pressure relief oil hole, and the lateral oil hole 13 is disposed between the flange journal 8 and the crankshaft 1, so that the lateral oil hole 13 is disposed in the range of the flange journal 8 and is communicated with the flange oil hole 9 through the annular oil groove 14, the refrigerant oil flows out from the lateral oil hole 13 and the flange oil hole 9 and then enters the oil storage cavity 7, and finally flows into the oil sump along the outer wall surface of the pump body through the oil passage 11 without interfering with the exhaust flow, thereby effectively reducing the oil spitting rate.

In one embodiment, the pump body assembly further comprises a first partition 15, a second partition 16 and a lower flange 17, the first partition 15 and the second partition 16 are located between the low pressure cylinder 2 and the high pressure cylinder 3, the lower flange 17 is located at the lower side of the high pressure cylinder 3, a second intermediate pressure chamber 18 is formed between the first partition 15 and the second partition 16, and the second intermediate pressure chamber 18 is communicated with the exhaust port of the low pressure cylinder 2.

When the compressor works, the crankshaft 1 rotates to pump the refrigeration oil in the shell to each oil outlet on the crankshaft 1 through the oil suction pipe and the oil guide sheet, and the refrigeration oil flows out from each oil outlet to lubricate and cool each part of the pump body. After the frozen oil is pumped to the crankshaft lateral oil hole 13, the frozen oil flows out from the lateral oil hole 13 and enters a cavity formed by combining an annular oil groove 14 of the crankshaft 1 and the inner wall surface of the upper flange 4, the oil level of the frozen oil in the cavity is gradually increased along with the increase of oil pumping time, when the oil level in the cavity exceeds the flange oil hole 9, the frozen oil flows into an oil storage cavity 7 formed by combining the flange cover plate 5 and a tool withdrawal groove on the upper flange from the flange oil hole 9, when the oil level in the oil storage cavity 7 exceeds the contact surface of the upper flange 4 and the flange cover plate 5, the frozen oil in the oil storage cavity 7 enters a contact surface gap to seal the contact surface, and high-pressure refrigerant in the shell is prevented from leaking into a first medium-pressure cavity 6 formed by the upper flange 4 and the flange cover plate 5, so that the performance of the compressor is influenced.

When the oil level in the oil storage cavity 7 exceeds the lowest height of the cover plate oil hole 9, the frozen oil flows out along the cover plate oil hole 9 and finally flows into the oil pool along the outer wall surface of the pump body. The cover plate oil hole 9 prevents the refrigerant oil from flowing out from the gap between the flange cover plate 5 and the outer wall surface of the flange shaft neck 8 when the refrigerant oil in the oil storage cavity 7 is excessive, and the refrigerant oil flows into the exhaust hole along the upper surface of the flange cover plate 5, so that the exhaust resistance and the power consumption of the compressor are increased, and the performance of the compressor is reduced.

According to the embodiment of the application, the compressor comprises the pump body assembly, and the pump body assembly is the pump body assembly.

According to an embodiment of the application, the air conditioner comprises the pump body assembly or the 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 intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims

1. A pump body component is characterized by comprising a crankshaft (1), a low-pressure cylinder (2), a high-pressure cylinder (3), an upper flange (4) and a flange cover plate (5), the top of the upper flange (4) is provided with a first middle pressure cavity (6) communicated with an exhaust port of the low pressure cylinder (2), the flange cover plate (5) is covered on the upper end surface of the upper flange (4), and closes the first medium-pressure chamber (6), the upper flange (4) has a tool withdrawal groove at the connecting position of the flange shaft journal (8) and the upper end surface, the flange cover plate (5) is matched with the tool withdrawal groove to form an oil storage cavity (7), a flange oil hole (9) is arranged on the flange journal (8), a main oil hole (10) is arranged on the crankshaft (1), the main oil hole (10) is communicated with the oil storage cavity (7) through the flange oil hole (9).

2. The pump body assembly according to claim 1, characterized in that the lower end face inner edge of the blind flange (5) is located radially inside the outer edge of the undercut.

3. Pump body assembly according to claim 1, characterized in that the cover flange (5) is provided with a radially extending oil passage (11), the oil passage (11) extending through the cover flange (5) and communicating with the oil reservoir chamber (7), the oil passage (11) being located above the bottom surface of the cover flange (5) and isolated from the first intermediate-pressure chamber (6).

4. The pump block assembly according to claim 3, characterized in that the oil passage (11) is a radial oil hole provided in correspondence with the flange oil hole (9) in an axial direction of the crankshaft (1).

5. The pump block assembly according to claim 3, wherein the oil passage (11) is a radial oil groove provided in the upper end surface of the flange cover plate (5), and an annular sink groove is further provided in the upper end surface of the flange cover plate (5) at the inner peripheral side thereof, and the radial oil groove communicates with the sink groove.

6. The pump body assembly according to claim 1, characterized in that the part of the flange cover plate (5) on the upper side of the flange oil hole (9) is matched with the flange journal (8), the part of the flange cover plate (5) on the lower side of the flange oil hole (9) is provided with a flow passage (12), and the flange oil hole (9) is communicated with the oil storage cavity (7) through the flow passage (12).

7. The pump block assembly according to claim 1, characterized in that a lateral oil hole (13) is provided in the crankshaft (1), the lateral oil hole (13) being located at the same height as the flange oil hole (9) in the axial direction of the crankshaft (1), the lateral oil hole (13) being capable of communicating the flange oil hole (9) and the main oil hole (10).

8. The pump block assembly according to claim 7, wherein the lateral oil hole (13) is a relief oil hole, and an annular oil groove (14) is provided in an outer peripheral wall of the crankshaft (1), and the lateral oil hole (13) is located in a region where the annular oil groove (14) is located and communicates with the annular oil groove (14).

9. The pump body assembly according to claim 1, further comprising a first diaphragm (15), a second diaphragm (16) and a lower flange (17), the first diaphragm (15) and the second diaphragm (16) being located between the low pressure cylinder (2) and the high pressure cylinder (3), the lower flange (17) being located on the lower side of the high pressure cylinder (3), a second intermediate pressure chamber (18) being formed between the first diaphragm (15) and the second diaphragm (16), the second intermediate pressure chamber (18) being in communication with the exhaust port of the low pressure cylinder (2).

10. A compressor comprising a pump body assembly, characterized in that it is a pump body assembly according to any one of claims 1 to 9.

11. An air conditioner characterised by comprising a pump body assembly according to any one of claims 1 to 9 or a compressor according to claim 10.