Oil line structure of compressor and compressor

Patent metadata

Field	Value
Publication number	US-11248609-B2
Application number	US-201716617033-A
Country	US
Kind code	B2
Filing date	Dec 25, 2017
Priority date	Sep 29, 2017
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

The present disclosure relates to an oil line structure of a compressor and compressor, wherein the oil line structure of a compressor including: a spindle, an upper flange and a rolling bearing, wherein an interior of the rolling bearing encloses a cylinder cavity for performing compression, and the rolling bearing comprises a rolling body; wherein the spindle is internally provided with a spindle oil hole, and the upper flange is provided with an upper oil groove which is in communication with the spindle oil hole to guide an oil into the rolling body so as to lubricate the same. In this way, the heat generated by friction of the rolling body is discharged in time, so as to prevent a temperature rise in the bearing and reduce the wear, thereby improving the energy efficiency value of the compressor and ensuring normal operation of the compressor.

First claim

The invention claimed is:

1. A compressor comprising an oil line structure, the oil line structure comprising:
a spindle, internally provided with a spindle oil hole;
an upper flange, provided with an upper oil groove;
a rolling bearing, wherein an interior of the rolling bearing encloses a cylinder cavity for performing compression, and the rolling bearing comprises a rolling body; and
a lower flange, provided with a lower oil groove in communication with the rolling body;
wherein the upper flange is located above the rolling bearing in an axial direction of the spindle, the lower flange is located below the rolling bearing in the axial direction of the spindle, the upper oil groove is in communication with the spindle oil hole to guide an oil into the rolling body so as to lubricate the same and the lower oil groove is configured to guide the oil out of the lower flange or guide the oil out of the rolling bearing;
wherein the rolling bearing comprises a bearing cone and a bearing cup, the bearing cup is provided with a bearing cup oil groove, and the lower oil groove communicates the rolling body with the bearing cup oil groove to discharge the oil from the bearing cup through the bearing cup oil groove.

2. The compressor according to claim 1 , wherein the upper oil groove comprises:
a straight oil groove in communication with the spindle oil hole;
an oil inlet hole in communication with the rolling body;
an oil inlet passage with one end in communication with the straight oil groove and the other end in communication with the inlet hole.

3. The compressor according to claim 2 , wherein the straight oil groove is provided on a radially inner side of the upper flange and extends along an axial direction of the upper flange; the oil inlet passage extends along a radial direction of the upper flange, and the oil inlet hole extends along the axial direction of the upper flange.

4. The compressor according to claim 3 , wherein in a cross section of the upper flange, the straight oil groove is an annular oil groove or an arc-shaped oil groove.

5. The compressor according to claim 2 , wherein two or more oil inlet passages and two or more oil inlet holes are arranged along a circumference of the upper flange;
each of the oil inlet passages is in communication with respective ones of the oil inlet holes respectively, and
the two or more oil inlet passages are in communication with the straight oil groove, or further comprising two or more straight oil grooves, wherein each of the oil inlet passages is in communication with respective ones of the straight oil grooves respectively.

6. The compressor according to claim 2 , further comprising an upper oil reservoir disposed on the upper flange, wherein the upper oil reservoir communicates with the oil inlet hole and the oil inlet passage.

7. The compressor according to claim 6 , wherein the upper oil reservoir is located above the oil inlet hole in an axial direction of the oil inlet hole and extends in a circumferential direction of the upper flange.

8. The compressor according to claim 2 , wherein a gasket is provided between the upper flange and the rolling bearing, and along the axial direction of the spindle, the gasket is provided with a plurality of oil guiding holes, the plurality of oil guiding holes are arranged along a circumferential direction of the spindle, and communicate the oil inlet hole with the rolling body.

9. The compressor according to claim 8 , wherein at least two of the plurality of oil guiding holes have different diameters, and the oil guiding hole closer to an exhaust hole of the rolling bearing has a larger diameter than the oil guiding hole closer to an intake hole of the rolling bearing.

10. The compressor according to claim 1 , further comprising a lower oil reservoir provided in the lower flange, wherein the lower oil reservoir is in communication with the lower oil groove.

11. The compressor according to claim 10 , wherein the lower oil reservoir is an annular structure circumferentially surrounding the spindle.

12. The compressor according to claim 1 , wherein the bearing cup oil groove comprises an axial oil hole extending along an axial direction of the bearing cup and at least one radial oil hole extending along a radial direction of the bearing cup, the axial oil hole communicates with the lower oil groove, and the at least one radial oil hole communicates with the axial oil hole, such that the oil is discharged from a circumferential surface of the bearing cup through the radial oil hole.

13. The compressor according to claim 12 , wherein the lower oil groove extends along a radial direction of the lower flange;
or, there are a plurality of the radial oil holes arranged in parallel, and extending along the radial direction of the bearing cup.

14. The compressor according to claim 1 , wherein the spindle oil hole comprises a spindle radial oil hole provided inside the spindle and along a radial direction of the spindle.

15. An air-conditioner, comprising the compressor comprising the oil line structure according to claim 1 .

Assignees

• Gree Electric Appliances Wuhan Co Ltd
• Gree Electric Appliances Inc Zhuhai

Inventors

• Hu Yusheng
• Xu Jia
• Zhang Zhenjiang
• Yang Guomang
• Wan Pengkai
• Liang Shebing

Classifications

• F04C18/344

  with vanes reciprocating with respect to the inner member · CPC title

• F04C29/00

  Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00 · CPC title

• F04C29/028 Primary

  Means for improving or restricting lubricant flow · CPC title

• F04C18/3447 Primary

  the vanes having the form of rollers, slippers or the like · CPC title

• F04C18/3446

  the inner and outer member being in contact along more than one line or surface · CPC title