CN103486035A - Piston seal mechanism of rotary type refrigeration compressor - Google Patents
Piston seal mechanism of rotary type refrigeration compressor Download PDFInfo
- Publication number
- CN103486035A CN103486035A CN201310442708.8A CN201310442708A CN103486035A CN 103486035 A CN103486035 A CN 103486035A CN 201310442708 A CN201310442708 A CN 201310442708A CN 103486035 A CN103486035 A CN 103486035A
- Authority
- CN
- China
- Prior art keywords
- piston
- circular groove
- sealing mechanism
- circumferential seal
- piston ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Compressor (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a piston seal mechanism of a rotary type refrigeration compressor. The piston seal mechanism is arranged between the radial contact surfaces of both a piston and an air cylinder, and comprises a round groove, a metal gasket and a circumferential seal piston ring, wherein the metal gasket is positioned in the round groove, and the circumferential seal piston ring is fixed in the round groove. The invention discloses the piston seal mechanism of the rotary type refrigeration compressor, the piston seal mechanism realizes reasonable radial working of the piston and the air cylinder together, and not only is the part between the piston and the air cylinder prevented from being blocked, but also gas is prevented from leaking effectively.
Description
technical field
The present invention relates to a kind of compressor, relate in particular to a kind of piston sealing mechanism of Rotary Refrigerate Compressor, belong to the Compressor Technology field.
background technique
In refrigeration system, compressor is the heart of refrigeration system, is to promote the power that refrigeration agent constantly circulates in refrigeration system, and it plays a part refrigerant conveying steam, guarantees the refrigeration cycle normal operation.Reciprocating type refrigeration compressor is a kind of use traditional refrigeration compressor comparatively widely, yet, because there are the deficiencies such as inertial force is large, volume is large, component are many, the coefficient of performance is low in this class refrigeration compressor, its application region is replaced by Rotary Refrigerate Compressor more and more.Rotary Refrigerate Compressor can be realized higher rotating speed mostly, has capacity regulating mode and the higher coefficient of performance flexibly, thereby the scope of application is more and more extensive.
The compression that Rotary Refrigerate Compressor mainly relies on piston to rotate in cylinder to realize refrigeration agent, exhaust, air-breathing work.Along with refrigerant vapour is constantly compressed in the compresser cylinder circular groove, the refrigerant vapour temperature constantly raises, and can cause temperature in whole cylinder to raise.At present, unreasonable owing to coordinating between the piston of a lot of Rotary Refrigerate Compressors and cylinder, there are some problems, as: coordinate tension between piston and cylinder, cause occurring because hot expansibility is different stuck; Between piston and cylinder, matching gap is excessive, causes a large amount of leakages of refrigeration agent.Therefore need to improve between piston and cylinder, coordinate, to overcome above-mentioned defect, and the piston of Rotary Refrigerate Compressor and the cooperation key between cylinder are radial fit.
summary of the invention
For the demand, the invention provides a kind of piston sealing mechanism of Rotary Refrigerate Compressor, this piston sealing mechanism has realized rational radial fit between piston and cylinder, and not only having guaranteed can be not stuck between piston and cylinder, and has effectively prevented Leakage Gas.
The present invention is a kind of piston sealing mechanism of Rotary Refrigerate Compressor, described piston sealing mechanism is arranged on radially between surface of contact of piston and cylinder, this piston sealing mechanism comprises circular groove, metallic shim and circumferential seal piston ring, described metallic shim is positioned at circular groove, and described circumferential seal piston ring is fixed in circular groove.
In a preferred embodiment of the present invention, described circular groove is along piston shaft to offering, and its groove length is the piston axial length.
In a preferred embodiment of the present invention, described metallic shim is fixed by welding in the circular groove bottom.
In a preferred embodiment of the present invention, an end opening of described circumferential seal piston ring, it puts into circular groove, and the opening end of piston ring chucking metallic shim two ends.
In a preferred embodiment of the present invention, described circumferential seal piston ring and circular groove radially leave certain interval at groove, and this circumferential seal piston ring outside fits tightly with cylinder inner wall.
The present invention has disclosed a kind of piston sealing mechanism of Rotary Refrigerate Compressor, and this piston sealing mechanism has realized rational radial fit between piston and cylinder, and not only having guaranteed can be not stuck between piston and cylinder, and has effectively prevented Leakage Gas.
The accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the structural representation of embodiment of the present invention Rotary Refrigerate Compressor piston sealing mechanism;
In accompanying drawing, the mark of each parts is as follows: 1, semi-circular ring piston, 2, cylinder, 3, the circumferential seal piston ring, 4, metallic shim.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Fig. 1 is the structural representation of embodiment of the present invention Rotary Refrigerate Compressor piston sealing mechanism; This piston sealing mechanism is arranged on radially between surface of contact of piston and cylinder, and it comprises circular groove, metallic shim 4 and circumferential seal piston ring 3, and described metallic shim 4 is positioned at circular groove, and described circumferential seal piston ring 3 is fixed in circular groove.
The piston sealing mechanism of the Rotary Refrigerate Compressor that the present invention mentions is a kind of compliant mechanism radially arranged between surface of contact at piston and cylinder, this piston sealing mechanism is set up circular groove and circumferential seal piston ring 3 by the radially surface of contact at piston and cylinder, make between the sagittal plane of piston and cylinder and leave certain gap, it is stuck owing to expanding with heat and contract with cold that assurance is unlikely to, simultaneously can realize the circumferential seal of gas again, can not cause gas in compression process along circumferential leakage.
As shown in Figure 1, the structured design process of this Rotary Refrigerate Compressor piston sealing mechanism is: along piston shaft to opening a circular groove, groove length is the piston axial length.In circular groove, weld a metallic shim 4, make metallic shim 4 be fixed on the circular groove bottom.Oval circumferential seal piston ring 3 is put into to circular groove, one end opening of this circumferential seal piston ring 3, and the opening end of piston ring chucking metallic shim 4 two ends, simultaneously, gap is not stayed in the opening end top of piston ring and circular groove bottom, exposes groove part length.When circumferential seal piston ring 3 is put into to circular groove, certain compression is arranged, and make circumferential seal piston ring 3 and circular groove radially leave certain interval at groove, so that compressor drum can have the leeway of further contraction while expanding.In addition, the outside of circumferential seal piston ring 3 and compresser cylinder inwall fit tightly, thereby stop up the leakage way between piston ring and cylinder inner wall.Because circumferential seal piston ring 3 is fixed in circular groove, therefore when rotating, compressor drum can not be subjected to displacement the generation Leakage Gas.
The present invention has disclosed a kind of piston sealing mechanism of Rotary Refrigerate Compressor, and this piston sealing mechanism has realized rational radial fit between piston and cylinder, and not only having guaranteed can be not stuck between piston and cylinder, and has effectively prevented Leakage Gas.
The above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; the variation that can expect without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (5)
1. the piston sealing mechanism of a Rotary Refrigerate Compressor, it is characterized in that, described piston sealing mechanism is arranged on radially between surface of contact of piston and cylinder, this piston sealing mechanism comprises circular groove, metallic shim and circumferential seal piston ring, described metallic shim is positioned at circular groove, and described circumferential seal piston ring is fixed in circular groove.
2. the piston sealing mechanism of Rotary Refrigerate Compressor according to claim 1, is characterized in that, described circular groove is along piston shaft to offering, and its groove length is the piston axial length.
3. the piston sealing mechanism of Rotary Refrigerate Compressor according to claim 1, is characterized in that, described metallic shim is fixed by welding in the circular groove bottom.
4. the piston sealing mechanism of Rotary Refrigerate Compressor according to claim 1, is characterized in that, an end opening of described circumferential seal piston ring, and it puts into circular groove, and the opening end of piston ring chucking metallic shim two ends.
5. the piston sealing mechanism of Rotary Refrigerate Compressor according to claim 1, is characterized in that, described circumferential seal piston ring and circular groove radially leave certain interval at groove, and this circumferential seal piston ring outside fits tightly with cylinder inner wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310442708.8A CN103486035A (en) | 2013-09-26 | 2013-09-26 | Piston seal mechanism of rotary type refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310442708.8A CN103486035A (en) | 2013-09-26 | 2013-09-26 | Piston seal mechanism of rotary type refrigeration compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103486035A true CN103486035A (en) | 2014-01-01 |
Family
ID=49826534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310442708.8A Pending CN103486035A (en) | 2013-09-26 | 2013-09-26 | Piston seal mechanism of rotary type refrigeration compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103486035A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2521783A1 (en) * | 1975-05-16 | 1976-11-25 | Herbert Steuer | Grooved ring piston in pump - rotates in eccentric bore, has sealing rollers in grooves of adjusted number |
| GB2055974A (en) * | 1979-08-06 | 1981-03-11 | Piv Antrieb Reimers Kg Werner | Rotary positive-displacement fluid-machines |
| US4992032A (en) * | 1989-10-06 | 1991-02-12 | Carrier Corporation | Scroll compressor with dual pocket axial compliance |
| RU2042036C1 (en) * | 1989-01-12 | 1995-08-20 | Соломонов Георгий Григорьевич | Rotor internal combustion engine |
| CN200978805Y (en) * | 2006-12-08 | 2007-11-21 | 刘忠臣 | Concentric ring drum-type compressor |
| CN102889208A (en) * | 2012-06-06 | 2013-01-23 | 苏州英华特制冷设备技术有限公司 | Scroll compressor with axially flexible seal |
-
2013
- 2013-09-26 CN CN201310442708.8A patent/CN103486035A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2521783A1 (en) * | 1975-05-16 | 1976-11-25 | Herbert Steuer | Grooved ring piston in pump - rotates in eccentric bore, has sealing rollers in grooves of adjusted number |
| GB2055974A (en) * | 1979-08-06 | 1981-03-11 | Piv Antrieb Reimers Kg Werner | Rotary positive-displacement fluid-machines |
| RU2042036C1 (en) * | 1989-01-12 | 1995-08-20 | Соломонов Георгий Григорьевич | Rotor internal combustion engine |
| US4992032A (en) * | 1989-10-06 | 1991-02-12 | Carrier Corporation | Scroll compressor with dual pocket axial compliance |
| CN200978805Y (en) * | 2006-12-08 | 2007-11-21 | 刘忠臣 | Concentric ring drum-type compressor |
| CN102889208A (en) * | 2012-06-06 | 2013-01-23 | 苏州英华特制冷设备技术有限公司 | Scroll compressor with axially flexible seal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104061317A (en) | Non-contact seal device for high-speed shaft of gear speed reducer | |
| CN102953771A (en) | Labyrinth damping sealing device with low leakage and high damping performance | |
| JP2019052641A (en) | Turbocharger | |
| CN103470793B (en) | Double inclined plane eccentric-butterfly-valve | |
| CN205225340U (en) | Improved generation triangle piston rotating compression expander | |
| CN103591022A (en) | Slipper-type radial flexible compensation mechanism of rolling piston-like fluid machine | |
| CN101328815B (en) | Free ring contact type gapless sealing technology | |
| CN210858818U (en) | Two-way spiral sealing system of steam turbine axle head | |
| CN103486035A (en) | Piston seal mechanism of rotary type refrigeration compressor | |
| CN110735795B (en) | Annular sealing structure for rotor end face of Roots blower | |
| CN204692119U (en) | Screw vacuum pump composite shaft seal structure | |
| CN204663879U (en) | Energy-saving and high-pressure Roots blower | |
| CN101956571B (en) | Containerization type mechanical sealing structure of screw expansion power machine | |
| JP2016037960A (en) | Shaft seal system and exhaust gas turbocharger | |
| CN208934876U (en) | A kind of compression assembly and compressor | |
| CN202597023U (en) | High-pressure packing sealing device for compressor | |
| CN208535159U (en) | A kind of high temperature and high pressure gas chip elasticity movable sealing structure | |
| CN102661265A (en) | High-pressure padding sealing device and method for compressor | |
| KR101584156B1 (en) | Seal for gas turbine and seal assembly having the same | |
| CN105927542A (en) | Rotor shaft seal structure for double-screw compressor | |
| CN206054224U (en) | A kind of piston used for refrigeration compressor | |
| CN101737316A (en) | Piston with compound piston ring | |
| CN202901288U (en) | Delf-seal packing | |
| JP6158056B2 (en) | Scroll type fluid machine | |
| CN113530880B (en) | Suspension type graphite sealing device used between dynamic and static structures in impeller machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140101 |