CN113982914A

CN113982914A - Scroll compressor and air conditioner

Info

Publication number: CN113982914A
Application number: CN202111396040.9A
Authority: CN
Inventors: 刘普; 王珂; 余风利
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-01-28
Anticipated expiration: 2041-11-23
Also published as: CN113982914B

Abstract

The invention provides a scroll compressor and an air conditioner, wherein the scroll compressor comprises a first movable scroll and a second movable scroll, a first scroll tooth of the first movable scroll is eccentrically meshed with a second scroll tooth of the second movable scroll, and the first movable scroll and the second movable scroll can be respectively driven to make the first movable scroll and the second movable scroll relatively rotate in a reverse translation way. According to the invention, the pump body structure comprises the first movable scroll disk and the second movable scroll disk which can relatively rotate in a reverse translation manner, so that the rotating speed can be higher, the gas transmission capacity of the pump body can be doubled under the driving of the driving component with the same power, and the efficiency of the compressor is improved.

Description

Scroll compressor and air conditioner

Technical Field

The invention belongs to the technical field of air conditioning, and particularly relates to a scroll compressor and an air conditioner.

Background

The scroll compressor is a fluid machine which realizes gas compression by volume change caused by the rotary engagement of a movable scroll and a fixed scroll, and the development of numerical control machines and computer technology for the seventies of the twentieth century leads the scroll compressor to enter the industrialization stage from the theory, and the scroll compressor is now more applied to the field of medium and small-capacity refrigeration compressors. The traditional scroll compressor pump body structure comprises a main pump body structure formed by meshing a static scroll disk and a movable scroll disk with the same scroll profile; the motor rotor provides rotary driving torque for the crankshaft, the movable scroll disk is matched with the crank pin of the crankshaft through a bearing, and the translational rotation of the movable scroll disk is realized under the matching of main parts such as an upper bracket, a cross slip ring, a main bearing and the like.

Because the traditional scroll compressor pump body structure is formed by meshing a static scroll disk and a movable scroll disk, the static scroll disk needs to be matched and fixed with an upper bracket through screws, the movable scroll disk needs to be matched with a cross slip ring anti-rotation mechanism, pump body parts are added, and a shaft system and a pump body are axially distributed, so that the overall scroll compressor is large in mass, large in height, unreasonable in layout and not beneficial to being suitable for narrow spaces; the structure that the static vortex disk is fixed and the movable vortex disk moves ensures that the vortex compressor is difficult to adapt to the high-speed working condition, and the improvement of the refrigeration gas transmission quantity is limited.

Disclosure of Invention

Therefore, the invention provides a scroll compressor and an air conditioner, which can overcome the defects that the scroll compressor with the movable scroll disk and the fixed scroll disk structure in the related technology is difficult to adapt to the high-speed working condition and limits the improvement of the refrigerating air delivery quantity.

In order to solve the above problems, the present invention provides a scroll compressor including a first orbiting scroll and a second orbiting scroll, a first wrap of the first orbiting scroll being eccentrically engaged with a second wrap of the second orbiting scroll, the first orbiting scroll and the second orbiting scroll being capable of being respectively driven to make opposite translational rotations with respect to each other.

In some embodiments, the scroll compressor further comprises a first drive disk capable of driving the first orbiting scroll to make a translational revolution, and a second drive disk capable of driving the second orbiting scroll to make a translational revolution.

In some embodiments, an anti-rotation structure is arranged between the base plate of the first movable scroll and the base plate of the second movable scroll, the anti-rotation structure comprises a plurality of anti-rotation pins arranged on one of the two and a plurality of counter bores arranged on the other of the two, the anti-rotation pins are respectively inserted into the counter bores in a one-to-one correspondence manner, and an eccentric gap is arranged between the anti-rotation pins and the wall of the counter bores.

In some embodiments, a suction port and/or a discharge port is configured on a base plate of the first orbiting scroll; and/or a pressure relief hole is formed on the base plate of the first movable scroll disc, and a pressure relief valve is arranged on the pressure relief hole; and/or a side of the second movable scroll facing away from the first movable scroll is configured with a plurality of balance holes.

In some embodiments, a side of the first orbiting scroll facing away from the second orbiting scroll has a first crank pin bearing housing in which a first crank pin of the first driving plate is movably inserted; and/or one side of the second movable scroll, which is far away from the first movable scroll, is provided with a second crank pin bearing seat, and a second crank pin of the second driving disc is movably inserted in the second crank pin bearing seat.

In some embodiments, the first driving disk includes a first bevel gear portion, the second driving disk includes a second bevel gear portion, and the driving device includes a rotary motor and a bevel gear capable of driving rotation of the rotary motor, the first bevel gear portion and the second bevel gear portion have axes of revolution coaxial and defined as a coaxial line, the axes of revolution of the bevel gears are orthogonal to the coaxial line, the bevel gear is located between the first bevel gear portion and the second bevel gear portion, and the bevel gear meshes with the first bevel gear portion and the second bevel gear portion simultaneously.

In some embodiments, a side of the first driving disc, which faces away from the second driving disc, is connected to a first bearing seat support, and a support bearing seat is provided thereon, the driving disc bearing seat on the first driving disc is inserted into the support bearing seat, and a bearing is provided between the driving disc bearing seat and the support bearing seat.

In some embodiments, the centers of the bracket bearing housing and the driving disk bearing housing are configured with a through hole concentric with and penetrating the exhaust port provided on the first orbiting scroll.

In some embodiments, a first oil guide hole is configured on the second driving disc, and a second oil guide hole is configured on the second orbiting scroll, the first oil guide hole communicating with the second oil guide hole to enable guiding of a lubricating oil to a mating surface of the first orbiting scroll and the second orbiting scroll.

In some embodiments, an edge of the mating surface of the first orbiting scroll facing the second orbiting scroll is provided with an oil storage groove capable of storing the lubricating oil guided in the second oil guide hole.

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

The invention provides a scroll compressor and an air conditioner, wherein a pump body structure comprises a first movable scroll disk and a second movable scroll disk which can relatively rotate in a reverse translation manner, the pump body structure can have higher rotating speed (adapt to high-speed working conditions), the gas transmission capacity of a pump body can be doubled under the driving of a driving component with the same power, and the efficiency of the compressor is improved.

Drawings

FIG. 1 is a perspective view of a pump body structure of a scroll compressor according to an embodiment of the present invention;

FIG. 2 is a perspective view of the pump body structure shown in FIG. 1 from another perspective;

FIG. 3 is a disassembled view of the pump body structure of FIG. 1 from a perspective;

FIG. 4 is a disassembled view of the pump body structure of FIG. 1 from another perspective;

fig. 5 is a schematic structural view (front surface) of the first orbiting scroll in fig. 1;

fig. 6 is a schematic structural view (rear surface) of the first orbiting scroll in fig. 1;

fig. 7 is a schematic structural view (front surface) of the second orbiting scroll in fig. 1;

fig. 8 is a schematic structural view (rear surface) of the second orbiting scroll in fig. 1;

fig. 9 is a sectional view of the first orbiting scroll engaged with the second orbiting scroll in fig. 1;

FIG. 10 is a schematic structural view of the first drive disc of FIG. 1;

FIG. 11 is a schematic structural view of the second drive disc of FIG. 1;

FIG. 12 is an external overall view of a scroll compressor according to one embodiment of the present invention.

The reference numerals are represented as:

11. a first orbiting scroll; 111. a first scroll wrap; 112. a counter bore; 113. an exhaust port; 114. an air suction port; 115. a pressure relief vent; 116. a first crank pin bearing block; 117. an exhaust pipe; 118. an oil storage tank; 119. a suction hose; 12. a second orbiting scroll; 121. a second scroll wrap; 122. the self-rotation prevention pin; 123. a second crank pin bearing block; 124. a balance hole; 125. a second oil guide hole; 21. a first drive disk; 211. a first crank pin; 212. a drive plate bearing seat; 22. a second drive disc; 221. a second crank pin; 222. a first oil guide hole; 23. a first bevel gear section; 24. a second bevel gear section; 31. a rotary motor; 32. a bevel gear; 41. a first bearing support; 51. a housing; 52. a housing upper cover; 53. a case side cover; 54. a lower cover of the housing; 6. a foot pad; 7. a junction box.

Detailed Description

Referring to fig. 1 to 12 in combination, according to an embodiment of the present invention, there is provided a scroll compressor having a housing, and a pump body structure is provided in the housing, and the pump body structure includes a first movable scroll 11 and a second movable scroll 12, a first scroll lap 111 of the first movable scroll 11 is eccentrically engaged with a second scroll lap 121 of the second movable scroll 12 (it is understood that the scroll profiles of the two are the same), and the first movable scroll 11 and the second movable scroll 12 can be respectively driven to make the two relatively rotate in a reverse translation manner. In the technical scheme, the pump body structure comprises a first movable scroll disk 11 and a second movable scroll disk 12 which can make relative reverse translational rotation, and the pump body structure can have higher rotating speed (adapt to high-speed working conditions), and can increase the gas transmission capacity of the pump body by one time under the driving of driving components with the same power (for example, under the same motor rotation frequency), so that the efficiency of the compressor is improved.

In some embodiments, the scroll compressor further comprises a first driving disk 21 and a second driving disk 22, wherein the first driving disk 21 can drive the first movable scroll 11 to make a translational rotation, the second driving disk 22 can drive the second movable scroll 12 to make a translational rotation, the first movable scroll 11 is driven to make a translational rotation by the first driving disk 21, and the second movable scroll 12 is driven to make a translational rotation by the second driving disk 22, so that the pump body structure can be more compact.

An anti-rotation structure is arranged between the base plate of the first movable scroll 11 and the base plate of the second movable scroll 12 to ensure the stability of the translational rotation between the first movable scroll 11 and the second movable scroll 12, preferably, the anti-rotation structure comprises a plurality of anti-rotation pins 122 arranged on one of the two and a plurality of counter bores 112 arranged on the other of the two, the plurality of anti-rotation pins 122 are respectively inserted into the plurality of counter bores 112 in a one-to-one correspondence manner, and an eccentric gap is arranged between the anti-rotation pins 122 and the hole walls of the counter bores 112, it can be understood that the arrangement of the eccentric gap should be adapted to the range of the translational rotation between the first movable scroll 11 and the second movable scroll 12. In the technical scheme, the purpose of preventing rotation is realized through the matching of the rotation preventing pin 122 and the counter bore 112, an upper bracket and a cross slip ring assembly are not adopted, the quality of the pump body of the compressor is greatly reduced, and the height of the compressor is further reduced under the condition of keeping the vertical structure of the pump body. In a specific embodiment, the anti-rotation pins 122 and the counter bores 112 are evenly distributed at the outer circumferential positions of the first movable scroll disk 11 and the second movable scroll disk 12, the difference between the diameters of the two is the eccentricity of the double-acting disk, and a circle connecting the centers of the four counter bores of the upper movable scroll disk and a circle connecting the centers of the four cylindrical pins of the lower movable scroll disk are exactly translationally offset by a certain distance, which is equal to the eccentricity of the double-acting disk, so that the rotary translational rotation of the pump body can be ensured.

In some embodiments, a suction port 114 and/or a discharge port 113 are configured on a base plate of the first orbiting scroll 11, specifically, the discharge port 113 is located at a position of an approximate geometric center of the base plate, the suction port 114 is configured at a position of an approximate edge of the base plate, a suction hose 119 is connected to the suction port 114, which can accommodate a translational and rotational movement range of the first orbiting scroll 11, of course, the suction hose 119 is connected to a suction steel pipe on the housing, and a discharge pipe 117 is connected to the discharge port 113, which can form a fixed connection with the housing, thereby ensuring reliability thereof; and/or, a pressure relief hole 115 is formed on the base plate of the first movable scroll 11, and a pressure relief valve (not shown in the figure) is arranged on the pressure relief hole and is connected with the base plate through a corresponding threaded hole; preferably, a plurality of balance holes 124 are formed on the side of the second movable scroll 12 facing away from the first movable scroll 11, and the specific positions of the balance holes 124 are reasonably arranged according to the dynamic balance performance of the pump body structure.

In some embodiments, a side of the first orbiting scroll 11 facing away from the second orbiting scroll 12 has a first crank pin bearing seat 116, and the first driving disc 21 has a first crank pin 211 movably inserted in the first crank pin bearing seat 116; and/or a second crank pin bearing seat 123 is arranged on one side of the second movable scroll disk 12, which is far away from the first movable scroll disk 11, and a second crank pin 221 of the second driving disk 22 is movably inserted into the second crank pin bearing seat 123, so that the rotary and rotary motions of the first and

second driving disks

21 and 22 can be smoothly converted into the translational and rotary motions of the first and second

movable scroll disks

11 and 12. It will be appreciated that the first crank pin 211 is offset 180 degrees from the second crank pin 221 to accommodate the counter-rotating relative translational rotation of the dual discs.

It is understood that the scroll compressor further comprises a driving device, in some embodiments, the first driving disk 21 comprises a first bevel gear portion 23, the second driving disk 22 comprises a second bevel gear portion 24, the driving device comprises a rotary motor 31 and a bevel gear 32 capable of driving the rotary motor 31 to rotate, the first bevel gear portion 23 is coaxial with the rotation axis of the second bevel gear portion 24 and is defined as a coaxial line, the rotation axis of the bevel gear 32 is orthogonal to the coaxial line, the bevel gear 32 is located between the first bevel gear portion 23 and the second bevel gear portion 24, and the bevel gear 32 meshes with the first bevel gear portion 23 and the second bevel gear portion 24 simultaneously. In the technical scheme, the shafting of the driving device is horizontally arranged on one side of the pump body structure, so that the height of the compressor can be greatly reduced, the space layout is more reasonable, and the compressor is more stable and can adapt to narrow space.

It should be noted that the gear parameters such as the number of teeth and the modulus of the first bevel gear portion 23, the second bevel gear portion 24, and the bevel gear 32 are the same, and the gear teeth taper angles are all 45 °, so as to realize that the first driving disk 21 and the second driving disk 22 rotate in parallel and in opposite directions in the vertical direction, thereby driving the first movable scroll disk 11 and the second movable scroll disk 12 to make opposite translational rotation.

One side of the first driving disc 21, which is away from the second driving disc 22, is connected with a first bearing seat support 41, and is fixedly connected with the housing, and a support bearing seat (not referenced in the figure) is arranged on the first driving disc 21, the driving disc bearing seat 212 on the first driving disc 21 is inserted and fitted in the support bearing seat, a bearing is arranged between the driving disc bearing seat 212 and the support bearing seat, and the first bearing seat support 41 can ensure the overall position of the pump body structure, and can reliably support and limit the first driving disc 21. It is understood that a second bearing support (not shown) is disposed on a side of the second driving disc 22 away from the first driving disc 21, and forms a fixed connection with the housing to fix the position of the second driving disc 22, and similar to the structure of the first bearing support 41, it also has a support bearing seat to be inserted into and matched with the driving disc bearing seat on the second driving disc 22.

In some embodiments, the centers of the holder bearing housing and the driving disk bearing housing 212 are configured with a through hole (not referenced) concentric with and penetrating the exhaust port 113 provided on the first orbiting scroll 11, so that the exhaust passage of the pump body structure is optimized.

In some embodiments, a first oil guide hole 222 is formed on the second driving disk 22, a second oil guide hole 125 is formed on the second movable scroll 12, the first oil guide hole 222 communicates with the second oil guide hole 125 to guide lubricating oil to a mating surface of the first movable scroll 11 and the second movable scroll 12, specifically, a spiral oil guide plate or an oil pump or other pumping structure may be disposed at an orifice of the first oil guide hole 222 to guide lubricating oil in an oil pool corresponding to a bottom portion of the second driving disk 22 to the first oil guide hole 222, and then enter a mating surface of the first movable scroll 11 and the second movable scroll 12 through the second oil guide hole 125 to lubricate the same, and further, a radially extending lubricating oil passage communicating with the second oil guide hole 125 is formed on a base plate of the second movable scroll 12, the lubricating oil passage guides the lubricating oil in the second oil guide hole 125 partially to the outer circumferential direction of the second orbiting scroll 12, and at this time, an oil storage groove 118 is formed at an edge of the first orbiting scroll 11 facing the mating surface of the second orbiting scroll 12, the lubricating oil guided in the second oil guide hole 125 can be stored, the oil storage groove 118 has a plurality of oil storage grooves 118, and the plurality of oil storage grooves 118 are spaced apart in the circumferential direction of the first orbiting scroll 11 and are positioned at the outer circumferential side of the first wrap 111. An oil drain valve may be disposed at an outlet of the first oil guide hole 222 to control an oil amount between joint surfaces of the two orbiting scrolls.

The casing comprises a casing body 51, wherein a top through hole corresponding to the first movable scroll disk 11 and each part on the first movable scroll disk 11 is formed in the casing body 51, a bottom through hole corresponding to the second movable scroll disk 12 and each part on the second movable scroll disk 12 is formed in the bottom through hole, a side through hole corresponding to the driving device is formed in the side part of the driving device, a casing upper cover 52 is connected to the top through hole, a casing lower cover 54 is connected to the bottom through hole, a casing side cover 53 is connected to the side part through hole, a foot pad 6 is further connected to the bottom of the casing, and a junction box 7 is connected to the casing. The exhaust pipe 117 is welded to the case upper cover 52. The suction pipe is welded to the housing 51.

It can be understood that a corresponding proper sliding bearing or thrust bearing can be arranged in the corresponding bearing seat, and the meshing clearance of the bevel gear teeth can be adjusted by adopting reasonable type selection of the thrust bearing, so that the clearance of the combining surface of the pump body is adjusted until the working requirement is met.

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.

Claims

1. A scroll compressor is characterized by comprising a first movable scroll (11) and a second movable scroll (12), wherein a first scroll tooth (111) of the first movable scroll (11) is eccentrically meshed with a second scroll tooth (121) of the second movable scroll (12), and the first movable scroll (11) and the second movable scroll (12) can be respectively driven to make relative reverse translational rotation.

2. The scroll compressor of claim 1, further comprising a first drive disk (21), a second drive disk (22), wherein the first drive disk (21) is capable of driving the first orbiting scroll (11) in a translational rotation, and the second drive disk (22) is capable of driving the second orbiting scroll (12) in a translational rotation.

3. The scroll compressor according to claim 2, wherein an anti-rotation structure is provided between a base plate of the first orbiting scroll (11) and a base plate of the second orbiting scroll (12), the anti-rotation structure comprises a plurality of anti-rotation pins (122) provided on one of the two and a plurality of counter bores (112) provided on the other of the two, the plurality of anti-rotation pins (122) are respectively inserted into the plurality of counter bores (112) in a one-to-one correspondence manner, and an eccentric gap is provided between the anti-rotation pins (122) and a hole wall of the counter bores (112).

4. A scroll compressor according to claim 2, wherein a suction port (114) and/or a discharge port (113) is configured on a base plate of the first orbiting scroll (11); and/or a pressure relief hole (115) is formed on the base plate of the first movable scroll (11), and a pressure relief valve is arranged on the pressure relief hole; and/or a side of the second movable scroll (12) facing away from the first movable scroll (11) is configured with a plurality of balance holes (124).

5. A scroll compressor as claimed in claim 2, wherein a side of the first orbiting scroll (11) facing away from the second orbiting scroll (12) has a first crank pin bearing housing (116), the first drive disc (21) having a first crank pin (211) movably inserted in the first crank pin bearing housing (116); and/or a second crank pin bearing seat (123) is arranged on one side of the second movable scroll (12) departing from the first movable scroll (11), and a second crank pin (221) of the second driving disc (22) is movably inserted into the second crank pin bearing seat (123).

6. The scroll compressor according to claim 2, wherein the first drive disk (21) comprises a first bevel gear portion (23), the second drive disk (22) comprises a second bevel gear portion (24), further comprising a driving device comprising a rotary motor (31) and a bevel gear (32) capable of driving the rotary motor (31) to rotate, the first bevel gear portion (23) is coaxial with the rotation axis of the second bevel gear portion (24) and is defined as a coaxial line, the rotation axis of the bevel gear (32) is orthogonal to the coaxial line, the bevel gear (32) is located between the first bevel gear portion (23) and the second bevel gear portion (24), and the bevel gear (32) meshes with the first bevel gear portion (23) and the second bevel gear portion (24) simultaneously.

7. The scroll compressor of claim 2, wherein a side of the first drive disk (21) facing away from the second drive disk (22) is connected with a first bearing housing bracket (41) having a bracket bearing housing thereon, wherein a drive disk bearing housing (212) on the first drive disk (21) is inserted into the bracket bearing housing, and wherein a bearing is disposed between the drive disk bearing housing (212) and the bracket bearing housing.

8. The scroll compressor of claim 7, wherein centers of the bracket bearing housing and the driving disc bearing housing (212) are configured with a through hole concentric with and penetrating a discharge port (113) provided on the first orbiting scroll (11).

9. The scroll compressor according to claim 2, wherein a first oil guide hole (222) is configured on the second driving disk (22), a second oil guide hole (125) is configured on the second orbiting scroll (12), and the first oil guide hole (222) communicates with the second oil guide hole (125) to enable guiding of lubricating oil to a mating face of the first orbiting scroll (11) and the second orbiting scroll (12).

10. The scroll compressor according to claim 9, wherein an edge of the mating surface of the first orbiting scroll (11) facing the second orbiting scroll (12) is provided with an oil storage groove (118) capable of storing the lubricating oil guided in the second oil guide hole (125).

11. An air conditioner, characterized by comprising a scroll compressor according to any one of claims 1 to 10.