CN218235474U

CN218235474U - Scroll compressor having a plurality of scroll members

Info

Publication number: CN218235474U
Application number: CN202222427855.5U
Authority: CN
Inventors: 邓鸿阳; 郑金涛; 高照源; 郑坚标
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-09-14
Filing date: 2022-09-14
Publication date: 2023-01-06
Anticipated expiration: 2032-09-14

Abstract

The utility model provides a scroll compressor, include bent axle subassembly, support and be in driving disk on the support, the bent axle subassembly includes eccentric cover, eccentric cover is established and is arranged in the outside of support just is in the support is kept away from one side of driving disk. The utility model discloses, place in the support in by prior art in eccentric cover improves outside the support of arranging in to make the axial dimensions and the structural design of support no longer be subject to eccentric cover's axial dimensions and structure, the axial length size of support can be shortened the structure that makes the compressor compacter, the whole quality and the whole quick-witted size of support reduce, simultaneously, the depth of finish of the same through-hole of support is effectively reduced, can reduce processing manufacturing cost to a certain extent.

Description

Scroll compressor having a plurality of scroll members

Technical Field

The utility model belongs to the technical field of the compressor design, concretely relates to scroll compressor.

Background

The scroll compressor compresses refrigerant by two 180-degree staggered scroll plates (namely a movable plate and a static plate) in a translation manner, scroll molded lines are not always meshed or enter impurities in the translation process, and the problems of poor performance or reliability reduction and the like can be caused.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a scroll compressor can solve and place the centering structure of the eccentric cover of support in adopting among the prior art in and lead to the technical problem that support axial length and quality are great, eccentric cover spot facing work is higher than normal cost of processing deeply.

In order to solve the problem, the utility model provides a scroll compressor, include bent axle subassembly, support and be in driving disk on the support, the bent axle subassembly includes eccentric cover, eccentric cover is established in the outside of support just is in the support is kept away from one side of driving disk.

In some embodiments, the crankshaft assembly further includes a first shaft section and a second shaft section, a crank is disposed on a first end face of the first shaft section, a first end of the second shaft section is fixedly connected to the first shaft section through the crank, the eccentric sleeve is disposed between the first shaft section and the second shaft section, the eccentric sleeve is rotatably sleeved on the crank, and the movement of the eccentric sleeve is limited by a limiting structure, the eccentric sleeve has an eccentric rod that penetrates through and protrudes out of a second end of the second shaft section, the eccentric rod can drive the translational motion of the moving disk, and the second shaft section is rotatably connected to the bracket.

In some embodiments, an eccentric ring is sleeved on the outer circumferential wall of the eccentric rod, and the eccentric rod drives the movable disk to translate through the eccentric ring; and/or the first end of the second shaft section is provided with a crank hole, and the crank is in interference fit with the crank hole.

In some embodiments, the limiting structure includes a pin hole formed at a first end of the first shaft segment, a pin limiting groove formed at an end of the eccentric sleeve facing the first shaft segment, and a pin, one end of the pin is inserted into the pin hole, and the other end of the pin is inserted into the pin limiting groove.

In some embodiments, the limiting structure comprises an eccentric hole which is constructed on the second shaft section and penetrates through the two axial ends of the second shaft section, and the eccentric hole and the outer circumferential wall of the eccentric rod form a movable limit for the eccentric sleeve through the change of the hole wall profile of the eccentric hole.

In some embodiments, the limiting structure comprises a limiting protrusion disposed on a side of the eccentric sleeve facing the first shaft section, and the limiting protrusion forms an active limit for the eccentric sleeve with an outer circumferential wall of the first shaft section through a change of a profile of an outer circumferential wall of the limiting protrusion facing the side of the first shaft section.

In some embodiments, the eccentric sleeve also has an eccentric mass.

In some embodiments, the eccentric mass portion is an eccentric plate integrated with the eccentric rod, and the eccentric plate is provided with an air supply structure capable of supplying air flow near the air supply structure to a plurality of through holes on the bracket, and the through holes are communicated with the air suction cavity of the scroll compressor.

In some embodiments, the air delivery structure includes a plurality of spaced apart blades.

In some embodiments, the eccentric plate is configured with a plurality of air flow passages, each of which is disposed at a root of each of the blades.

The utility model provides a pair of scroll compressor, the eccentric cover is placed in by among the prior art in the support in and is improved outside the support is placed in to the external, thereby make the axial dimension and the structural design of support no longer be subject to the axial dimension and the structure of eccentric cover, the axial length size of support can be shortened the structure that makes the compressor compacter, the whole quality and the whole quick-witted size of support reduce, and simultaneously, the depth of processing of the same through-hole of support is effectively reduced, can reduce processing manufacturing cost to a certain extent.

Drawings

Fig. 1 is a schematic view of an internal structure of a scroll compressor according to an embodiment of the present invention;

FIG. 2 is a schematic view of the construction of the first shaft segment of FIG. 1;

FIG. 3 is a schematic structural view of the eccentric sleeve of FIG. 1;

FIG. 4 is a schematic structural view of the second shaft segment of FIG. 1;

fig. 5 is a schematic diagram illustrating a state change of the position-limiting structure according to an embodiment of the present invention;

fig. 6 is a schematic diagram illustrating a state change of a position-limiting structure according to another embodiment of the present invention;

fig. 7 is a schematic diagram illustrating a state change of a position-limiting structure according to another embodiment of the present invention;

FIG. 8 is a schematic structural view of the position limiting structure in FIG. 7;

fig. 9 is a schematic perspective view of an eccentric sleeve according to another embodiment of the present invention;

fig. 10 is a comparison graph of the variation of the bracket size and the axial length between the technical solution of the present invention and the technical solution of the prior art.

The reference numerals are represented as:

11. a first shaft section; 111. a crank; 112. a pin hole; 12. an eccentric sleeve; 121. an eccentric rod; 122. an eccentric ring; 123. a pin limiting groove; 124. an eccentric mass portion; 125. a blade; 126. an air flow channel; 127. a crank through hole; 13. a second shaft section; 131. a crank bore; 132. an eccentric hole; 21. a movable plate; 22. a stationary disc; 23. a motor assembly; 24. a main bearing; 3. a support; 31. a through-flow aperture; 41. a pin; 42. and a limiting bulge.

Detailed Description

Referring to fig. 1 to 10 in combination, according to an embodiment of the present invention, there is provided a scroll compressor, which includes a movable plate 21 and a fixed plate 22 which are opposite to each other by 180 °, a crankshaft assembly and a bracket 3, wherein the movable plate 21 is located on the bracket 3, the crankshaft assembly is driven by a motor assembly 23 to rotate so as to drive the movable plate 21 to translate relative to the fixed plate 22, so as to form compression on gas, the crankshaft assembly includes an eccentric sleeve 12, and the eccentric sleeve 12 is disposed outside the bracket 3 and is located on one side of the bracket 3 away from the movable plate 21. In this technical scheme, eccentric cover 12 is improved outside arranging support 3 for the external in placing in support 3 by placing in among the prior art to make the axial dimension and the structural design of support 3 no longer be limited by the axial dimension and the structure of eccentric cover 12, the axial length size of support 3 can be shortened the structure that makes the compressor compacter, the whole quality and the whole quick-witted size of support 3 reduce, and simultaneously, the depth of finish of the same through-hole of support 3 is effectively reduced, can reduce processing manufacturing cost to a certain extent.

In a specific embodiment, the crankshaft assembly further includes a first shaft segment 11 and a second shaft segment 13, a crank 111 is provided on a first end face of the first shaft segment 11, a first end of the second shaft segment 13 is fixedly connected to the first shaft segment 11 through the crank 111, an eccentric sleeve 12 is located between the first shaft segment 11 and the second shaft segment 13, the eccentric sleeve 12 is rotatably sleeved (through a crank through hole 127 on the eccentric sleeve 12) on the crank 111, and the movement of the eccentric sleeve 12 is limited by a limit structure (not referenced in the drawings), the eccentric sleeve 12 has an eccentric rod 121 penetrating through and protruding out of a second end of the second shaft segment 13, the eccentric rod 121 can drive the moving disk 21 to translate, and the second shaft segment 13 is rotatably connected to the bracket 3. In the technical scheme, the first shaft section 11 and the second shaft section 13 which are assembled in a segmented mode form rotatable connection for the eccentric sleeve 12, and the structure is reliable and stable.

It can be understood that the eccentric rod 121 may have a larger diameter, so as to be able to form a socket with the main bearing 24, so as to achieve translational driving of the movable plate 21, but the eccentric rod 121 with a larger diameter has the disadvantage of inconvenient assembly, so that, in a preferred embodiment, the outer circumferential wall of the eccentric rod 121 is sleeved with the eccentric ring 122, and the eccentric rod 121 drives the movable plate 21 to translate through the eccentric ring 122, so that the diameter of the eccentric rod 121 can be designed to be relatively small, which can facilitate assembly with the bracket 3. The first end of the second shaft section 13 is provided with a crank hole 131, the crank 111 and the crank hole 131 are in interference fit, and the interference fit mode can reduce connecting parts between the two parts and reduce fault occurrence points.

In a specific embodiment, referring to fig. 2 and 3 in combination, the limiting structure includes a pin hole 112 formed at a first end of the first shaft segment 11, a pin limiting groove 123 formed at an end of the eccentric sleeve 12 facing the first shaft segment 11, and a pin 41, wherein one end of the pin 41 is inserted into the pin hole 112, and the other end of the pin 41 is inserted into the pin limiting groove 123, as shown in fig. 5, the pin limiting groove 123 extends along an arc direction, has a certain arc length to form a limiting angle, and both ends of the arc length limit the pin 41. The limiting structure of the pin 41 is adopted, the selection of the limiting angle is realized through the selection of the arc length, the processing is simple and convenient, but the rigidity is relatively small, and the pin is particularly suitable for the working condition with small rotating speed.

Referring to fig. 6, in another specific embodiment, the limiting structure includes eccentric holes 132 formed on the second shaft section 13 and penetrating both axial ends thereof, the eccentric holes 132 form movable limits on the eccentric sleeve 12 with the outer circumferential wall of the eccentric rod 121 through the change of the hole wall profile, and the eccentric holes 132 can be made in various shapes such as an ellipse, a rectangle, etc. by controlling the limiting angle through controlling the shape position and size of the eccentric holes 132.

Referring to fig. 7 and 8, in another specific embodiment, the limiting structure includes a limiting protrusion 42 disposed on a side of the eccentric sleeve 12 facing the first shaft section 11, the limiting protrusion 42 forms a movable limit for the eccentric sleeve 12 with an outer circumferential wall of the first shaft section 11 through a change of a profile of an outer circumferential wall of the limiting protrusion 42 facing the first shaft section 11, and the limiting protrusion 42 may be in various shapes such as an ellipse, a great arc, etc., and forms a limit with the outer circumferential wall of the first shaft section 11 after rotating to a certain angle, thereby controlling the eccentric angle. The limiting structure has good rigidity, but the weight is increased, and the requirement on the machining precision is high.

As shown in fig. 3, the eccentric sleeve 12 further has an eccentric mass portion 124, and the eccentric mass portion 124 is disposed outside the bracket 3, and can be optimally designed according to the balance requirement in the axial direction, so that the eccentric sleeve 12 functions as a shafting balance block, and the balance overturning moment improves the operational reliability of the compressor, and more importantly, because the eccentric mass portion 124 is disposed outside the bracket 3, the size and shape of the eccentric sleeve can be designed more flexibly according to the requirement, and is not limited by the size and structure of the bracket 3. In a preferred embodiment, the eccentric mass part 124 is an eccentric plate extending along the radial direction of the first shaft segment 11, and the eccentric plate is connected with the eccentric rod 121 into a whole, i.e. integrally formed, so that the eccentric sleeve 12 does not occupy a dimension in the axial direction of the first shaft segment 11, thereby reducing the axial dimension of the entire compressor.

Referring to fig. 9, the eccentric plate has an air supply structure, the air supply structure can supply air flow near the air supply structure to a plurality of through holes 31 on the bracket 3, and the through holes 31 are communicated with the air suction cavity of the scroll compressor, so that the eccentric sleeve 12 can be aligned and has the function of improving the air suction amount of the compressor. Specifically, the blowing structure includes a plurality of blades 125 disposed at intervals, and of course, the shape of the blades 125 may be various, such as a half scroll shape, a fan shape, etc., when the crankshaft assembly is driven to rotate, the refrigerant is driven by the blowing structure, and the blowing structure, like a fan, agitates the refrigerant, increases the flowing speed of the refrigerant, enters the suction cavity from the through-flow hole 31 of the bracket 3, increases the suction amount, and thus improves the performance of the compressor.

In a preferred embodiment, the eccentric plate is configured with a plurality of air flow channels 126, and each air flow channel 126 is disposed at the root of each blade 125 to ensure smooth flow of the refrigerant air flow.

Those skilled in the art will readily appreciate that the advantageous features of the above described modes can be freely combined, superimposed without conflict.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within 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, a plurality of 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. The scroll compressor is characterized by comprising a crankshaft assembly, a support (3) and a movable plate (21) located on the support (3), wherein the crankshaft assembly comprises an eccentric sleeve (12), and the eccentric sleeve (12) is arranged on the outer side of the support (3) and located on one side, away from the movable plate (21), of the support (3).

2. The scroll compressor of claim 1, wherein the crankshaft assembly further comprises a first shaft section (11) and a second shaft section (13), the first shaft section (11) has a crank (111) on an end surface of a first end, the second shaft section (13) has a first end fixedly connected to the first shaft section (11) through the crank (111), the eccentric sleeve (12) is located between the first shaft section (11) and the second shaft section (13), the eccentric sleeve (12) is rotatably sleeved on the crank (111), and the eccentric sleeve (12) has a movable limit structure, the eccentric sleeve (12) has an eccentric rod (121) passing through and protruding out of a second end of the second shaft section (13), the eccentric rod (121) can drive the movable disk (21) to move in a translational motion, and the second shaft section (13) is rotatably connected to the bracket (3).

3. The scroll compressor of claim 2, wherein the outer circumferential wall of the eccentric rod (121) is sleeved with an eccentric ring (122), and the eccentric rod (121) drives the movable disk (21) to translate through the eccentric ring (122); and/or the first end of the second shaft section (13) is provided with a crank hole (131), and the crank (111) is in interference fit with the crank hole (131).

4. The scroll compressor of claim 2, wherein the limiting structure comprises a pin hole (112) formed at a first end of the first shaft section (11), a pin limiting groove (123) formed at an end of the eccentric sleeve (12) facing the first shaft section (11), and a pin (41), wherein one end of the pin (41) is inserted into the pin hole (112), and the other end of the pin (41) is inserted into the pin limiting groove (123).

5. The scroll compressor of claim 2, wherein the limiting structure comprises an eccentric hole (132) formed on the second shaft section (13) and penetrating through both axial ends thereof, the eccentric hole (132) forming a movable limit for the eccentric sleeve (12) with an outer circumferential wall of the eccentric rod (121) by a change of a hole wall profile thereof.

6. The scroll compressor of claim 2, wherein the limiting structure comprises a limiting protrusion (42) provided on a side of the eccentric sleeve (12) facing the first shaft section (11), the limiting protrusion (42) forming a movable limit for the eccentric sleeve (12) with an outer circumferential wall of the first shaft section (11) by a change of a contour of an outer circumferential wall thereof facing the first shaft section (11).

7. The scroll compressor of claim 2, wherein the eccentric sleeve (12) further has an eccentric mass (124).

8. The scroll compressor of claim 7, wherein the eccentric mass portion (124) is an eccentric plate integrated with the eccentric rod (121), and the eccentric plate has a blowing structure thereon, the blowing structure can send airflow nearby to a plurality of through-flow holes (31) on the bracket (3), and the through-flow holes (31) are communicated with a suction cavity of the scroll compressor.

9. The scroll compressor of claim 8, wherein the air delivery structure includes a plurality of spaced vanes (125).

10. The scroll compressor of claim 9, wherein a plurality of gas flow passages (126) are configured on the eccentric plate, each gas flow passage (126) being provided at a root of each blade (125).