CN201148952Y - Refrigeration compressor and piston thereof - Google Patents
Refrigeration compressor and piston thereof Download PDFInfo
- Publication number
- CN201148952Y CN201148952Y CNU2007200770581U CN200720077058U CN201148952Y CN 201148952 Y CN201148952 Y CN 201148952Y CN U2007200770581 U CNU2007200770581 U CN U2007200770581U CN 200720077058 U CN200720077058 U CN 200720077058U CN 201148952 Y CN201148952 Y CN 201148952Y
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- China
- Prior art keywords
- piston
- compressor
- hole
- refrigeration compressor
- teflon
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Abstract
The utility model discloses a piston of a cold compressor. The piston is provided with an outer diametral plane for being contacted with a piston hole of the compressor. In order to keep good sliding performance between the piston and the piston hole, the outer diametral plane is coated with polyfluortetraethylene film, thus avoiding clamping stagnation between the piston and the piton hole. The utility model further provides a cold compressor with the piston.
Description
Technical field
The utility model relates to the refrigeration compressor in a kind of automotive air-conditioning system, relates in particular to the piston of refrigeration compressor.
Background technique
Figure 1A is the piston of existing a kind of swing compressor band piston ring, and Figure 1B is the state of this piston in compressor.Shown in Figure 1A and Figure 1B, front end housing 1 in this compressor and back cylinder cover 6, cylinder block 10 link together.Make it to wave by the driveshaft 2 rotation driving planetary plate parts 4 that are installed on the main shaft 3 in the crankshaft cavity along guide rod 5 directions, planetary plate parts 4 are by planetary plate spherical connecting bar 8, drive piston 7 in cylinder block piston hole 11 from the upper dead center to the lower dead centre between to-and-fro motion, gas realizes becoming the air compression process of discharge capacity in the compression piston hole by suction and discharge valve block 9 and control valve.
As Figure 1B, in aforementioned compressor, the piston ring 70 on the piston press-fits and is outer splayed shape, and piston 7 slides up and down fast at cylinder block piston hole 11 under main shaft 3 high-revolving drives.Splayfooted piston ring 70 fully supports in the cylinder block piston hole.Yet, because circularity, the cylinder block piston hole concentricity of piston processing are processed possible deviation, the factors such as guaranteeing precision shortcoming of production line piston ring press-loading device, caused some areas stress of piston ring 70 to concentrate, under main shaft 3 high rotating speeds, the piston ring 70 easy cylinder piston holes 11 of giving vent to anger of escaping, thereby destroy the internal body component, compressor failure takes place.
The model utility content
Technical problem to be solved in the utility model provides a kind of refrigeration compressor and the piston thereof that can avoid above-mentioned inefficacy.
The technical solution of the utility model is the piston that proposes a kind of refrigeration compressor, have one with the contacted outer diametric plane of piston hole of compressor, wherein diametric plane has teflon (Teflon is to call the Teflon in the following text) and films thickness 〉=0.03mm that this teflon is filmed in addition.
Film and have good heat-resisting and low temperature tolerance characteristics in above-mentioned Teflon.Short time can be high temperature resistant to 300 ℃, generally can use continuously between 240 ℃～260 ℃, has significant thermostability, and it can be worked and not embrittlement under cryogenic temperature, does not at high temperature melt.This can guarantee the stable of work under compressor runs up the piston condition of high temperature that causes.The Teflon lower friction factor of filming.Friction factor changed when load was slided, but numerical value is only between 0.05-0.15, and near the selflubricating coefficient of ice, its friction factor can increase with load and reduce.Under high capacity, has good wear-resisting property.Under certain load, possesses wear-resistant and inadhesive two-fold advantage.The Teflon is corroded by medicine hardly, can protect part to avoid suffering the chemical corrosion of any kind of.Nearly all material is not filmed bonding with the Teflon.Very thin film also demonstrates well not adhesion property.
In the piston of above-mentioned refrigeration compressor, along its diametric(al) offer at least one end lead to outside the oil seepage hole of diametric plane.Wherein, oil seepage hole can two ends all leads to the outer diametric plane of piston.This oil seepage hole to be solving the friction, lubrication of piston external diameter face and cylinder block piston hole, and it is alternative on an equal basis that the renewal of this structure also can be considered the function of piston ring selflubricating.
Above-mentioned piston for example is to use in swing variable compressor.
In addition, the utility model proposes a kind of refrigeration type compressor, the piston that comprises a cylinder block, with piston hole driven by connecting rod and slide along the piston hole of cylinder block, this piston has and the contacted outer diametric plane of this piston hole, wherein the external diameter mask has teflon to film, thickness 〉=0.03mm that this teflon is filmed.
Therefore, of the present utility model have the piston of filming the Teflon and compare the piston body of existing band piston ring and reveal extraordinary sliding-type, stability and wearability, can avoid compressor failure, oil seepage hole of the present utility model can provide outside diametric plane to provide better lubricated.
Description of drawings
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, wherein:
Figure 1A is a kind of piston schematic representation of existing swing compressor band piston ring.
Figure 1B is the phase diagram of piston shown in Figure 1A in compressor.
Fig. 2 is an embodiment's of the utility model a piston sectional drawing.
Fig. 3 is an embodiment's of the utility model a piston floor map.
Fig. 4 is an embodiment's of the utility model an outer diametric plane schematic representation.
Embodiment
Please refer to Fig. 2 and in conjunction with shown in Figure 1B, piston 20 of the present utility model remains in the cylinder block piston hole 11 that is located at the refrigeration compressor of swing variable compressor for example, and is subjected to the drive of planetary plate spherical connecting bar 8 and slides in piston hole 11.Piston 20 has the outer diametric plane 201 that contacts with piston hole 11, has the Teflon and film 202 on diametric plane 201 in addition.In the present embodiment, 202 thickness are filmed more than or equal to 0.03mm in this Teflon, and will satisfy the size requirement of piston 20 profiles.
With reference to shown in Figure 2, compressor piston 20 is offered oil seepage hole 203 at piston along diametric(al), and its function can be so that piston face has better lubricity.This oil seepage hole is a through hole, and promptly diametric plane is punched to a side of major general's piston, is preferably worn to opposite side, as shown in Figure 2 by the outer diametric plane of a side.By oil seepage hole 203, the oil that splashes in the piston different parts can flow to the position that piston produces sliding friction.This can solve the friction, lubrication of piston 20 and cylinder block piston hole 11, the function of the alternative original piston ring selflubricating of the renewal of this structure.
With reference to Fig. 3 and shown in Figure 4, compressor piston 20 also outside diametric plane 201 offer at least one circular oil seepage slot 204 (shown in the figure 2) along the circumferential direction, to improve lubricity.But conduct is not to restriction of the present utility model for this lubricating function, and those skilled in the art still can be applied to other lubricated means to replace among the embodiment of the present utility model the structure of oil seepage slot 204.
In the present embodiment, use spraying machine, divide four times teflon to be sprayed at piston face.Use TT7100 coating dilution to add the TCL-7109S teflon.The sliding capability of piston in this example and cylinder block piston hole is good, has effectively avoided the clamping stagnation of piston and piston hole, has fundamentally avoided original piston ring piston of escaping out and has routed the potential failure mode of organism internal structure.
In the test below, piston at first carries out 40～60 ℃ of preheatings, increases a coating film thickness and removes remained on surface moisture, sprays 80～130 ℃, 30 ± 5 minutes for the first time.For the second time spray 80～130 ℃, 30 ± 5 minutes.Spray 80～130 ℃ for the third time, 30 ± 5 minutes.80～130 ℃ of the 4th sprayings, 30 ± 5 minutes.Viscosity is 23.1～23.8.
Performance test table
| Test item | Technical requirements | Testing result | Judge |
| Refrigerating capacity and power consumption | Rotating speed: 1000/2000r/min pressure of inspiration(Pi): 313/241kPa exhaust pressure: 2412/1619kPa inhalation temperature: 24 ℃ of Subcoold temperature: 2.8k refrigerating capacity: 〉=2960/6961w moment of torsion :≤19.4/17.4N.m | Refrigerating capacity: 3308/7521w moment of torsion: 17.9/15.8N.m | Meet |
| Long-term reliability/durability | The trial-production operating mode is for details see attached table duplicated cold and must not descend above 10% after the test | Test no abnormally, the repetition measurement refrigerating capacity is 2981/7154w, and moment of torsion is 17.8/15.0N.m | Meet |
Subordinate list
Refrigerating capacity test card two
| Test item | Technical requirements | Testing result | Judge |
| Refrigerating capacity | Rotating speed: 1000/2000r/min pressure of inspiration(Pi): 313/241kPa exhaust pressure: 2412/1619kPa inhalation temperature: cross cold for 24 ℃: 2.8K refrigerating capacity: 〉=2960/6961w moment of torsion :≤19.4/17.4N.m | Refrigerating capacity: 3274/7462W moment of torsion: 17.0/15.3N.m | Meet |
Have the favorable mechanical performance by last table one piston of the present utility model as can be known, the test result from table two as can be seen, the piston that adopts the Teflon to film, its ability aspect refrigeration still can obtain certain assurance.
Vertical the above, of the present utility model have the piston body of filming the Teflon and reveal extraordinary sliding-type, stability and wearability, and do not having under the condition of piston ring, oil seepage hole can play substitution effect.This piston for example is to use in the middle of swing compressor, but is not limited only to swing compressor, and this is for illustrative purposes and the description of carrying out.
Top description only is for principle of the present utility model is described.In addition, to those skilled in the art, can be easy to carry out various modifications and modification, therefore, also do not wish the utility model is restricted in diagram and described concrete structure of literal and the application, all suitable distortion and equivalence are replaced and all are considered to drop in the utility model appended claims and their the equivalent mode of execution scope.
Claims (8)
1. the piston of a refrigeration compressor, have one with the contacted outer diametric plane of piston hole of compressor, it is characterized in that described external diameter mask has teflon to film, thickness 〉=0.03mm that wherein said teflon is filmed.
2. the piston of refrigeration compressor as claimed in claim 1 is characterized in that, described piston along diametric(al) offer at least one end lead to described outside the oil seepage hole of diametric plane.
3. the piston of refrigeration compressor as claimed in claim 2 is characterized in that, the outer diametric plane of described piston is all led at the two ends of described oil seepage hole.
4. the piston of refrigeration compressor as claimed in claim 1 is characterized in that, described refrigeration compressor is swing variable compressor.
5. refrigeration type compressor, the piston that comprises a cylinder block, with piston hole driven by connecting rod and slide along the piston hole of cylinder block, this piston has and the contacted outer diametric plane of this piston hole, it is characterized in that, described external diameter mask has teflon to film, thickness 〉=0.03mm that described teflon is filmed.
6. refrigeration compressor as claimed in claim 5 is characterized in that, described piston along diametric(al) offer at least one end lead to described outside the oil seepage hole of diametric plane.
7. refrigeration compressor as claimed in claim 6 is characterized in that, the outer diametric plane of described piston is all led at the two ends of described oil seepage hole.
8. refrigeration compressor as claimed in claim 5 is characterized in that, described refrigeration compressor is swing variable compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200770581U CN201148952Y (en) | 2007-12-24 | 2007-12-24 | Refrigeration compressor and piston thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200770581U CN201148952Y (en) | 2007-12-24 | 2007-12-24 | Refrigeration compressor and piston thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201148952Y true CN201148952Y (en) | 2008-11-12 |
Family
ID=40116720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200770581U Expired - Fee Related CN201148952Y (en) | 2007-12-24 | 2007-12-24 | Refrigeration compressor and piston thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201148952Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338061A (en) * | 2011-11-01 | 2012-02-01 | 无锡市苏立成汽车空调压缩机有限公司 | Piston of automobile air-conditioning compressor |
-
2007
- 2007-12-24 CN CNU2007200770581U patent/CN201148952Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338061A (en) * | 2011-11-01 | 2012-02-01 | 无锡市苏立成汽车空调压缩机有限公司 | Piston of automobile air-conditioning compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20151224 |
|
| EXPY | Termination of patent right or utility model |