CN102454611A - Upper bearing structure for closed type compressor - Google Patents
Upper bearing structure for closed type compressor Download PDFInfo
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- CN102454611A CN102454611A CN2010105210864A CN201010521086A CN102454611A CN 102454611 A CN102454611 A CN 102454611A CN 2010105210864 A CN2010105210864 A CN 2010105210864A CN 201010521086 A CN201010521086 A CN 201010521086A CN 102454611 A CN102454611 A CN 102454611A
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- upper bearing
- compressor
- type compressor
- bearing structure
- circular groove
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Abstract
The invention discloses an upper bearing structure for closed type compressor, wherein the compressor comprises a shell which consists of a cylindrical body, an upper cover and a lower cover, a motor and a compressor assembly are installed in the shell, the motor consists of a stator, a rotor and a crankshaft, the compressor assembly consists of a cylinder, an upper bearing and a lower bearing, the upper bearing comprises an outer edge, a bulge is raised upwards at the middle part of the outer edge, a shaft hole is arranged at the center of the bulge, and a ring-shaped groove is formed on the lower end face of the upper bearing and can store a part of lubricating oil so as to form a stable oil film with enough strength along a side gap on the end face of a piston, therefore the leakage of refrigerant gas from the end face of the piston can be reduced, the purpose for sealing the end face is achieved, friction is lowered, and the efficiency and the service life of the compressor can be improved.
Description
Technical field
The invention belongs to a kind of compressor, be specifically related to a kind of upper bearing structure that forms stable oil film at piston end surface, can reduce the hermetic type compressor of cold media air leakage.
Background technique
Shown in Fig. 1～4, the hermetic type compressor of existing technology, the inner upper side that is included in housing 1 is equipped with motor 20, at the downside of motor 20 compressor assembly 30 that is equipped with separated by a distance.Housing 1 is made up of cylindrical drum 11, loam cake 12 and the lower cover 13 etc. of hollow.Motor 20 is pressed on the inner peripheral surface that is fixed on cylindrical shell 11, and it is made up of stator 21, rotor 22 and rotary crankshaft 23 of being pressed into the center that is fixed on rotor 22 and transmitting rotating force etc.
Compressor assembly 30 comprises cylinder 31, upper bearing 32 and lower bearing 33; At the inner eccentric part 23a that forms rotary crankshaft 23 of the compression volume C of cylinder 31; In the outside of eccentric part 23a, being provided with can rotation and the rolling piston 35 of revolution by eccentric part 23a; One side contacts with the excircle upper thread of rolling piston 35, and is the impeller structures such as (not shown) of suction area and compressing area with the compression volume C zoning that the outer peripheral surface of the inner peripheral surface of cylinder 31 and rolling piston 35 forms.The suction port (not shown) that also is communicated with the suction pipe in the suction area in the cylinder 31, and the exhaust port (not shown) that is used to discharge compressed media in the compressing area.
Downside binding at lower bearing 33 is fixed with baffler 34, is used to reduce the noise that is produced by pressure difference from the compressed media gas of exhaust port discharge.For making dielectric gas be discharged to seal casinghousing 1 outside through baffler 34, on loam cake 12, be provided with power-line terminal 25 and outlet pipe 26, be provided with suction pipe 24 in the bottom of housing 1.
But in the hermetic type compressor of existing technology, the piston end surface oil film in the cylinder forms deficiency, and there is the face leakage phenomenon in the insufficient strength of oil film, and promptly the cold media air of hyperbaric chamber leaks into low pressure chamber.The performance and the life-span of compressor have been influenced.
Summary of the invention
The present invention is for the shortcoming that overcomes existing technology proposes, and its objective is the upper bearing structure that provides a kind of and form stable oil film at piston end surface, can reduce the hermetic type compressor that cold media air leaks.
Technological scheme of the present invention is: a kind of upper bearing structure of hermetic type compressor, and described compressor comprises housing, housing is made up of cylindrical shell, loam cake and lower cover, and motor and compressor assembly are installed in housing.Motor is made up of stator, rotor and bent axle, and compressor assembly is made up of cylinder, upper bearing and lower bearing.
Described upper bearing comprises outer rim, upwards is formed with convexity at the middle part of outer rim, is formed with axis hole at the center of convexity, is formed with circular groove in the lower end surface of upper bearing.
Described circular groove is formed on the outside of axis hole.
Described circular groove is eccentric formation with respect to the center of axis hole.
The described width of going up circular groove is between 2～5mm.
The described degree of depth that goes up circular groove is between 1～2mm.
Can store a part of lubricant oil in the circular groove of the present invention, thereby form certain thickness, stable and oil film that have sufficient intensity along the sideshake of piston end surface.The cold media air that so not only can reduce piston end surface leaks, and reaches the purpose of end face seal, can also reduce friction, improves the efficient and the life-span of compressor.
Description of drawings
Fig. 1 is the longitudinal sectional drawing of existing technology hermetic type compressor;
Fig. 2 is the stereogram of the upper bearing (metal) of existing technology hermetic type compressor;
Fig. 3 is the plan view of the upper bearing (metal) of existing technology hermetic type compressor;
Fig. 4 is along the sectional drawing of A-A line among Fig. 3;
Fig. 5 is the worm's eye view of the upper bearing (metal) of hermetic type compressor of the present invention;
Fig. 6 is along the sectional drawing of B-B line among Fig. 5.
Wherein:
20 motors, 21 stators
22 rotors, 23 bent axles
24 suction pipes, 25 power-line terminals
26 outlet pipes, 30 compressor assemblies
31 cylinders, 32 upper bearing (metal)s
33 lower bearings, 34 bafflers
35 pistons, 36 outer rims
37 protruding 38 axis holes
39 elliptical apertures, 40 valve blocks
41 circular holes, 42 oil grooves
50 upper bearing (metal)s, 51 outer rims
52 protruding 53 axis holes
54 elliptical apertures, 55 circular grooves
56 circular holes, 57 oil grooves
Embodiment
Below, with reference to accompanying drawing and embodiment the upper bearing structure of hermetic type compressor of the present invention is elaborated:
Like Fig. 1,5, shown in 6, a kind of upper bearing structure of hermetic type compressor, described compressor comprises housing 1, in the inner upper side of housing 1 motor 20 is installed, at the downside of motor 20 compressor assembly 30 that is equipped with separated by a distance.Housing 1 is made up of cylindrical drum 11, loam cake 12 and the lower cover 13 etc. of hollow.Motor 20 is pressed on the inner peripheral surface that is fixed on cylindrical shell 11, and it is made up of stator 21, rotor 22 and rotary crankshaft 23 of being pressed into the center that is fixed on rotor 22 and transmitting rotating force etc.
Compressor assembly 30 comprises cylinder 31, upper bearing 50 and lower bearing 33; At the inner eccentric part 23a that forms rotary crankshaft 23 of the compression volume C of cylinder 31; In the outside of eccentric part 23a, being provided with can rotation and the rolling piston 35 of revolution by eccentric part 23a; One side contacts with the excircle upper thread of rolling piston 35, and is the structures such as impeller of suction area and compressing area with the compression volume C zoning that the outer peripheral surface of the inner peripheral surface of cylinder 31 and rolling piston 35 forms.The suction port that also is communicated with the suction pipe in the suction area in the cylinder 31, and the exhaust port that is used to discharge compressed media in the compressing area.
Downside binding at lower bearing 33 is fixed with baffler 34, is used to reduce the noise that is produced by pressure difference from the compressed media gas of exhaust port discharge.For making dielectric gas be discharged to housing 1 outside through baffler 34, on loam cake 12, be provided with outlet pipe 26, be provided with suction pipe 24 in the bottom of housing 1.
The width of circular groove 55 is between 2～5mm.
The degree of depth of circular groove 55 is between 1～2mm.
Working procedure of the present invention and effect are:
When compressor operation, lubricant oil throws away from the oil outlet of bent axle, can store a part of lubricant oil in the circular groove 55, thereby forms certain thickness, stable and oil film that have sufficient intensity along the sideshake of piston end surface.The cold media air that so not only can reduce piston end surface leaks, and reaches the purpose of end face seal, can also reduce friction, improves the efficient and the life-span of compressor.
Claims (5)
1. the upper bearing structure of a hermetic type compressor; Described compressor comprises housing (1), and housing (1) is made up of cylindrical shell (11), loam cake (12) and lower cover (13), and motor (20) and compressor assembly (30) are installed in housing (1); Motor (20) is made up of stator (21), rotor (22) and bent axle (23); Compressor assembly (30) is made up of cylinder (31), upper bearing (50) and lower bearing (33), it is characterized in that: described upper bearing (50) comprises outer rim (51), upwards is formed with convexity (52) at the middle part of outer rim (51); Center in protruding (52) is formed with axis hole (53), is formed with circular groove (55) in the lower end surface of upper bearing (50).
2. the upper bearing structure of hermetic type compressor according to claim 1, it is characterized in that: described circular groove (55) is formed on the outside of axis hole (53).
3. the upper bearing structure of hermetic type compressor according to claim 1 is characterized in that: described circular groove (55) is eccentric formation with respect to the center of axis hole (53).
4. the upper bearing structure of hermetic type compressor according to claim 1 is characterized in that: the described width of going up circular groove (55) is between 2～5mm.
5. the upper bearing structure of hermetic type compressor according to claim 1 is characterized in that: the described degree of depth that goes up circular groove (55) is between 1～2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105210864A CN102454611A (en) | 2010-10-27 | 2010-10-27 | Upper bearing structure for closed type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105210864A CN102454611A (en) | 2010-10-27 | 2010-10-27 | Upper bearing structure for closed type compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102454611A true CN102454611A (en) | 2012-05-16 |
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ID=46038150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105210864A Pending CN102454611A (en) | 2010-10-27 | 2010-10-27 | Upper bearing structure for closed type compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102454611A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481457A (en) * | 2017-10-12 | 2017-12-15 | 成都麦杰康科技有限公司 | Waterproof calling device |
-
2010
- 2010-10-27 CN CN2010105210864A patent/CN102454611A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107481457A (en) * | 2017-10-12 | 2017-12-15 | 成都麦杰康科技有限公司 | Waterproof calling device |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120516 |