CN102454610A - Piston structure for closed type compressor - Google Patents
Piston structure for closed type compressor Download PDFInfo
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- CN102454610A CN102454610A CN2010105210794A CN201010521079A CN102454610A CN 102454610 A CN102454610 A CN 102454610A CN 2010105210794 A CN2010105210794 A CN 2010105210794A CN 201010521079 A CN201010521079 A CN 201010521079A CN 102454610 A CN102454610 A CN 102454610A
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- piston
- compressor
- type compressor
- face
- hermetic type
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Abstract
The invention discloses a piston 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, and a plurality of evenly distributed spiral grooves are arranged along an inner cylindrical face on the upper end face of a piston and are used for storing a part of lubricating oil so as to form an oil film with a certain thickness and enough strength on the end face of the 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 piston structure that forms stable oil film at piston end surface, can reduce the hermetic type compressor of cold media air leakage.
Background technique
Like Fig. 1, shown in 2, 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.
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.
Piston 35 is a toroidal, and two ends form smooth plane.
But in the hermetic type compressor of existing technology, because the piston two ends form smooth plane, the piston end surface oil film 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 cold structure of work 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 piston 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.
Compressor assembly is made up of cylinder, upper bearing, lower bearing, baffler and piston, forms a plurality of spiral chutes in the upper-end surface of described piston along inner cylindrical surface.
Upper-end surface at described piston forms a plurality of spiral chutes that are uniformly distributed with along inner cylindrical surface.
Described spiral fluted width B is 2～5mm.
Described spiral fluted depth D is 1～1.5mm.
Described spiral fluted afterbody C reduces gradually, forms the pinnacle.
Can store a part of lubricant oil in the spiral chute of the present invention, on piston end surface, form and have certain thickness and have the oil film of sufficient intensity.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 piston of existing technology hermetic type compressor;
Fig. 3 is the stereogram of the piston of hermetic type compressor of the present invention;
Fig. 4 is the plan view of the piston of hermetic type compressor of the present invention;
Fig. 5 is along the sectional drawing of A-A line among Fig. 4.
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, 40 pistons
41 spiral chutes
Embodiment
Below, with reference to accompanying drawing and embodiment the piston structure of hermetic type compressor of the present invention is elaborated:
Like Fig. 1, shown in 3～5, a kind of piston 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.
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.
Upper-end surface at piston 40 forms a plurality of spiral chutes 41 that are uniformly distributed with along inner cylindrical surface, and the best is 6～8, and the present invention is 6.
The width B of spiral chute 41 is 2～5mm, and the depth D of spiral chute 41 is 1～1.5mm.The afterbody C of spiral chute 41 reduces gradually, forms the pinnacle.
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 spiral chute 41, on piston end surface, forms certain thickness and has the oil film of sufficient intensity.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 piston structure of a hermetic type compressor; Described compressor comprises housing (1); Housing (1) is made up of cylindrical shell (11), loam cake (12) and lower cover (13); 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), it is characterized in that: compressor assembly (30) is made up of cylinder (31), upper bearing (32), lower bearing (33), baffler (34) and piston (40), forms a plurality of spiral chutes (41) in the upper-end surface of described piston (40) along inner cylindrical surface.
2. the piston structure of hermetic type compressor according to claim 1, it is characterized in that: the upper-end surface at described piston (40) forms a plurality of spiral chutes that are uniformly distributed with (41) along inner cylindrical surface.
3. the piston structure of hermetic type compressor according to claim 1, it is characterized in that: the width B of described spiral chute (41) is 2～5mm.
4. the piston structure of hermetic type compressor according to claim 1, it is characterized in that: the depth D of described spiral chute (41) is 1～1.5mm.
5. the piston structure of hermetic type compressor according to claim 1, it is characterized in that: the afterbody C of described spiral chute (41) reduces gradually, forms the pinnacle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105210794A CN102454610A (en) | 2010-10-27 | 2010-10-27 | Piston structure for closed type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105210794A CN102454610A (en) | 2010-10-27 | 2010-10-27 | Piston structure for closed type compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102454610A true CN102454610A (en) | 2012-05-16 |
Family
ID=46038149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105210794A Pending CN102454610A (en) | 2010-10-27 | 2010-10-27 | Piston structure for closed type compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102454610A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511257A (en) * | 2012-11-22 | 2014-01-15 | 广东美芝制冷设备有限公司 | Rotary compressor and crank shaft assembly thereof |
| CN103629360A (en) * | 2013-12-03 | 2014-03-12 | 北京航空航天大学 | Gas end cylindrical surface combined sealing device provided with spiral groove |
| CN104019024A (en) * | 2014-06-10 | 2014-09-03 | 柳州柳工液压件有限公司 | Leakproof dynamic pressure type valve plate |
| CN105392994A (en) * | 2014-02-21 | 2016-03-09 | 大丰工业株式会社 | Rotor and rotary fluid machine |
| CN112764340A (en) * | 2019-10-21 | 2021-05-07 | 斯沃奇集团研究及开发有限公司 | Measuring system for a plurality of mechanical timepiece movements |
| CN114017330A (en) * | 2021-11-05 | 2022-02-08 | 广东美芝制冷设备有限公司 | Rotor compressor and refrigeration equipment |
-
2010
- 2010-10-27 CN CN2010105210794A patent/CN102454610A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511257A (en) * | 2012-11-22 | 2014-01-15 | 广东美芝制冷设备有限公司 | Rotary compressor and crank shaft assembly thereof |
| CN103629360A (en) * | 2013-12-03 | 2014-03-12 | 北京航空航天大学 | Gas end cylindrical surface combined sealing device provided with spiral groove |
| CN105392994A (en) * | 2014-02-21 | 2016-03-09 | 大丰工业株式会社 | Rotor and rotary fluid machine |
| CN104019024A (en) * | 2014-06-10 | 2014-09-03 | 柳州柳工液压件有限公司 | Leakproof dynamic pressure type valve plate |
| CN104019024B (en) * | 2014-06-10 | 2016-06-29 | 柳州柳工液压件有限公司 | Anti-leak dynamic pressure type valve plate |
| CN112764340A (en) * | 2019-10-21 | 2021-05-07 | 斯沃奇集团研究及开发有限公司 | Measuring system for a plurality of mechanical timepiece movements |
| CN114017330A (en) * | 2021-11-05 | 2022-02-08 | 广东美芝制冷设备有限公司 | Rotor compressor and refrigeration equipment |
| CN114017330B (en) * | 2021-11-05 | 2023-08-22 | 广东美芝制冷设备有限公司 | Rotor compressor and refrigeration equipment |
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Legal Events
| 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 |