Meshing structure for scroll compressor and compressor

Abstract

The application discloses a meshing structure for a scroll compressor and a compressor, wherein the meshing structure for the scroll compressor comprises: a static scroll disc, a lower surface of the static scroll disc being formed with static scroll teeth, and a lower part of the static scroll disc being formed with an accommodation space; a dynamic scroll disc, an upper surface of the dynamic scroll disc being formed with dynamic scroll teeth; and a driving mechanism, the driving mechanism being used for driving the movement of the dynamic scroll disc; during the movement of the dynamic scroll disc, the dynamic scroll disc is arranged in contact with the accommodation space along the radial outer edge, and at least a gap is formed between the surface of the dynamic scroll teeth and the surface of the static scroll teeth along the radial direction, and an oil film is formed in the gap through the entry of lubricating oil. Through the application of the application, a meshing mechanism suitable for a scroll compressor is provided, the tooth surfaces of the static scroll teeth and the dynamic scroll teeth are kept a certain gap without direct contact through the contact and cooperation of the dynamic scroll disc and the circumferential inner wall outside the dynamic scroll disc, the lubricating oil can enter the place and form an oil film, and the noise during the working process is reduced.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more particularly to a meshing structure for a scroll compressor and a compressor. Background Technology

[0002] In most common existing scroll compressors, radial sealing is achieved through the interlocking teeth of the moving and stationary scrolls. However, this sealing method inevitably generates significant friction, leading to heat generation and reduced efficiency. Furthermore, the repeated contact and collision of the scroll teeth produces considerable contact friction noise. Additionally, the involute design of the scroll makes it difficult to guarantee machining precision. Therefore, existing scroll compressors require further improvement. Existing technologies also employ solutions such as the one described in Chinese patent ZL200820153871.7, which involves attaching a flexible material to the surface of the meshing scrolls to reduce the machining precision requirements of the scroll section. However, this flexible material attachment method also incurs higher production costs, and the lifespan of the flexible material is difficult to guarantee in the complex operating environment of the compressor. Summary of the Invention

[0003] In view of this, in order to solve the above problems, the object of the present invention is to provide a meshing structure for a scroll compressor, comprising:

[0004] A stationary vortex disk, wherein a stationary vortex tooth is formed on the lower surface of the stationary vortex disk, and an accommodating space is formed in the lower part of the stationary vortex disk;

[0005] A moving vortex disk, wherein moving vortex teeth are formed on the upper surface of the moving vortex disk, the moving vortex disk is disposed within the accommodating space, and the moving vortex teeth are meshed with the stationary vortex teeth;

[0006] A drive mechanism is used to drive the movement of the moving scroll plate;

[0007] During the movement of the moving vortex, the outer edge of the moving vortex is in contact with the inner wall of the accommodating space along the radial direction. At least one gap is formed radially between the surface of the moving vortex tooth and the surface of the stationary vortex tooth, and an oil film is formed in the gap by the entry of lubricating oil.

[0008] In another preferred embodiment, the outer edge of the static vortex disk extends outward to form a wall portion, and the accommodating space is formed on the inner side of the wall portion.

[0009] In another preferred embodiment, the moving scroll plate is arranged to contact the enclosure portion during its movement.

[0010] In another preferred embodiment, the lower end of the enclosure portion protrudes downward beyond the lower end of the static vortex tooth.

[0011] In another preferred embodiment, it further includes: a housing, the housing being fitted over the outside of the stationary vortex disk, and a first sealing structure being provided between the enclosure portion and the housing.

[0012] In another preferred embodiment, a second sealing structure is provided at the lower end of the stationary vortex tooth, and the second sealing structure abuts against the upper surface of the moving vortex.

[0013] In another preferred embodiment, a third sealing structure is provided at the upper end of the moving vortex tooth, and the third sealing structure abuts against the lower surface of the stationary vortex disk.

[0014] In another preferred embodiment, the radial outer contour of the moving scroll is circular.

[0015] In another preferred embodiment, the drive mechanism includes at least a crankshaft and an eccentric sleeve, one end of the crankshaft being connected to the lower end of the moving scroll via the eccentric sleeve.

[0016] Another object of the present invention is to provide a compressor comprising the engagement structure for a scroll compressor as described in any one of the above.

[0017] The present invention, by adopting the above-mentioned technical solution, has the following positive effects compared with the prior art: By applying the present invention, a meshing mechanism suitable for scroll compressors is provided. Through the contact and cooperation between the moving scroll and its outer circumferential inner wall, the tooth surfaces of the stationary scroll teeth and the moving scroll teeth maintain a certain gap and do not directly contact each other, so that the contact friction between the stationary scroll teeth and the moving scroll teeth becomes frictionless. This allows lubricating oil to enter here and form an oil film, and reduces noise during operation, thereby improving the overall working performance and service life of the compressor, and reducing the difficulty of the process and the processing cost. Attached Figure Description

[0018] Figure 1 This is a first schematic diagram of a meshing structure for a scroll compressor according to the present invention;

[0019] Figure 2 This is a second schematic diagram of a meshing structure for a scroll compressor according to the present invention.

[0020] In the attached image:

[0021] 1. Stationary scroll; 2. Stationary scroll gear; 3. Accommodation space; 4. Moving scroll; 5. Moving scroll gear; 6. Drive mechanism; 7. Clearance; 8. Enclosure; 9. Outer shell; 10. First sealing structure; 11. Second sealing structure; 12. Third sealing structure; 13. Crankshaft; 14. Eccentric sleeve. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0023] like Figure 1 and Figure 2 The diagram illustrates a preferred embodiment of a meshing structure for a scroll compressor, comprising: a stationary scroll 1, with stationary scroll teeth 2 formed on its lower surface, and a receiving space 3 formed at the lower part of the stationary scroll 1; a moving scroll 4, with moving scroll teeth 5 formed on its upper surface, the moving scroll 4 disposed within the receiving space 3, the moving scroll teeth 5 meshing with the stationary scroll teeth 2; and a drive mechanism 6 for driving the movement of the moving scroll 4; wherein, during the movement of the moving scroll 4, the outer edge of the moving scroll 4 contacts the inner wall of the receiving space 3 along the radial direction, and at least a gap 7 is formed radially between the surface of the moving scroll teeth 5 and the surface of the stationary scroll teeth 2, and an oil film is formed within the gap 7 by the entry of lubricating oil. Furthermore, conventional compressors typically achieve radial sealing by having the stationary scroll 1 and the moving scroll 4 engage with each other, while the main body of the moving scroll 4 has a gap with the circumferential inner wall to prevent interference. However, in the meshing structure of the scroll compressor of the present invention, the circumferential engagement of the moving scroll 4 is redesigned so that its outer peripheral edge at least partially contacts the inner wall of the accommodating space 3 during movement. At least a gap 7 is always maintained between the stationary scroll 2 and the moving scroll 5 during operation. This gap 7 allows lubricating oil to enter and forms an oil film at the gap 7. Radial sealing between the stationary scroll 2 and the moving scroll 5 is achieved by filling the gap 7 with the oil film.

[0024] Furthermore, as a preferred embodiment, the outer edge of the stationary vortex disk 1 extends outward to form a surrounding wall portion 8, and an accommodating space 3 is formed on the inner side of the surrounding wall portion 8.

[0025] Furthermore, as a preferred embodiment, the moving vortex 4 is arranged to contact the enclosure portion 8 during its movement.

[0026] Furthermore, in a preferred embodiment, the lower end of the enclosure portion 8 protrudes downward beyond the lower end of the stationary vortex tooth 2.

[0027] Furthermore, as a preferred embodiment, it also includes: a housing 9, which is sleeved on the outside of the stationary vortex disk 1, and a first sealing structure 10 is provided between the enclosure portion 8 and the housing 9.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the implementation and protection scope of the present invention.

[0029] In addition to the above, the present invention also has the following embodiments:

[0030] In a further embodiment of the present invention, a second sealing structure 11 is provided at the lower end of the stationary vortex tooth 2, and the second sealing structure 11 abuts against the upper surface of the moving vortex disk 4.

[0031] In a further embodiment of the present invention, a third sealing structure 12 is provided at the upper end of the moving vortex tooth 5, and the third sealing structure 12 abuts against the lower surface of the stationary vortex disk 1.

[0032] In a further embodiment of the present invention, the radial outer contour of the moving vortex disk 4 is circular.

[0033] In a further embodiment of the present invention, the radial outer contour of the stationary vortex disk 1 is circular.

[0034] In a further embodiment of the present invention, both the moving scroll 4 and the stationary scroll 1 are precision-machined using a machine tool with circular interpolation function.

[0035] In a further embodiment of the present invention, the drive mechanism 6 includes at least a crankshaft 13 and an eccentric sleeve 14, one end of the crankshaft 13 being connected to the lower end of the moving scroll 4 via the eccentric sleeve 14.

[0036] Furthermore, a preferred embodiment of a compressor is also shown, which includes the engagement structure for a scroll compressor as described in any of the above.

[0037] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A meshing structure for a scroll compressor, characterized in that, include: A stationary vortex disk, wherein a stationary vortex tooth is formed on the lower surface of the stationary vortex disk, and an accommodating space is formed in the lower part of the stationary vortex disk; A moving vortex disk, wherein moving vortex teeth are formed on the upper surface of the moving vortex disk, the moving vortex disk is disposed within the accommodating space, and the moving vortex teeth are meshed with the stationary vortex teeth; A drive mechanism is used to drive the movement of the moving scroll plate; During the movement of the moving volute, the outer edge of the moving volute in the radial direction contacts the inner wall of the accommodating space, and at least one gap is formed in the radial direction between the surface of the moving volute tooth and the surface of the stationary volute tooth, and an oil film is formed in the gap by the entry of lubricating oil. The outer edge of the stationary vortex extends outward to form a wall portion, and the accommodating space is formed on the inner side of the wall portion; the moving vortex is in contact with the wall portion during its movement. The lower end of the enclosure protrudes downward beyond the lower end of the stationary vortex tooth, and the tooth surfaces of the stationary vortex tooth and the moving vortex tooth maintain a certain gap and do not directly contact each other.

2. The meshing structure for a scroll compressor according to claim 1, characterized in that, Also includes: The outer casing is fitted onto the outside of the stationary vortex disk, and a first sealing structure is provided between the enclosure and the outer casing.

3. The meshing structure for a scroll compressor according to claim 1, characterized in that, The lower end of the stationary vortex tooth is provided with a second sealing structure, which abuts against the upper surface of the moving vortex.

4. The meshing structure for a scroll compressor according to claim 1, characterized in that, The upper end of the moving vortex tooth is provided with a third sealing structure, which abuts against the lower surface of the stationary vortex disk.

5. The meshing structure for a scroll compressor according to claim 1, characterized in that, The radial outer contour of the moving scroll is circular.

6. The meshing structure for a scroll compressor according to claim 1, characterized in that, The drive mechanism includes at least a crankshaft and an eccentric sleeve, with one end of the crankshaft connected to the lower end of the moving scroll via the eccentric sleeve.

7. A compressor, characterized in that, The meshing structure for a scroll compressor as described in any one of claims 1 to 6 above includes the structure described in any one of claims 1 to 6.

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