CN201953657U - Rotary compressor - Google Patents
Rotary compressor Download PDFInfo
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- CN201953657U CN201953657U CN 201120028796 CN201120028796U CN201953657U CN 201953657 U CN201953657 U CN 201953657U CN 201120028796 CN201120028796 CN 201120028796 CN 201120028796 U CN201120028796 U CN 201120028796U CN 201953657 U CN201953657 U CN 201953657U
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- chamfering
- rotary compressor
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Abstract
A rotary compressor comprises a cylinder, a piston, a main bearing and an auxiliary bearing, wherein the cylinder is arranged in a casing, the piston is arranged in the cylinder, and the main bearing and the auxiliary bearing are arranged on two sides of the cylinder. The main bearing is provided with an exhaust device, an exhaust notch is arranged on one side of the cylinder facing the main bearing, the area S1 of the end face of the piston facing the exhaust side of the main bearing is larger than the area S2 of the end face of the other side of the piston, and S1>S2>0.4S1. The outer wall of the other side of the piston is provided with a first chamfer, and/or, the inner wall of the other side of the piston is provided with a second chamfer, and/or the end face of the other side of the piston is provided with a groove. The first chamfer and/or the second chamfer are beveling chamfers, right-angle chamfers or arc chamfers. The rotary compressor is applicable to not only a single-cylinder rotary compressor but also a double-cylinder or multi-cylinder rotary compressor, and has the advantages of simple and reasonable structure, high operating efficiency, stability and reliability in running and wide applicability.
Description
Technical field
The utility model relates to a kind of rotary compressor.
Background technique
Rotary compressor is widely used in refrigerator, the good heat pump water heater of air-conditioning, and the major function of rotary compressor is to suck low pressure refrigerant, it is compressed to high temperature and high pressure gas, and then is discharged in the work system of refrigerant.
Referring to Fig. 1, be the vertical section structure schematic representation of existing rotary compressor, comprise housing 1, be fixed on the inner motor that produces driving force of housing 1, compressing mechanism that can compression refrigerant under the effect of the driving force of motor with certain internal capacity.Motor comprises the stator 2 that is fixed on the housing 1 and in stator 2 inner rotor rotated 3.Compressing mechanism comprises cylinder 6, be separately positioned on the main bearing 5 of top and the bottom of cylinder 6 and supplementary bearing 7, join with the inwall of rotor 3 and be provided with the bent axle 4 of eccentric shaft, taken in bent axle 4 and be connected the piston 8 that can rotate freely, its front end is crimped on the slide plate 11 on piston 8 cylindricals.Gas-liquid separator 12 is arranged on the outside of housing 1, and gas-liquid separator 12 is connected with the inlet hole of cylinder 6.Gas coolant enters the air aspiration cavity of cylinder 6 by sucking pipe 10, rotation by bent axle 4, piston 8, gas coolant is compressed in cylinder 6, gas coolant after being compressed is discharged by the exhaust structure 5.1 that is arranged on the main bearing 5 by the exhaust otch of cylinder 6, enter the silencing cavity of baffler 9 then, discharge by the exhaust port on the baffler 9.1 again.
Referring to Fig. 2, be the main TV structure schematic representation of cylinder part, this cylinder part by cylinder 6, piston 8, and slide plate 11 form.Piston 8 and eccentric shaft rotate in cylinder 6, when piston 8 forwards position shown in Fig. 2 to, gap between the exhaust otch in the exhaust structure 5.1 and the inwall of piston 8 is minimum, this gap is referred to as sealed width t, at this moment, the chamfering size of the inwall of piston 8 directly has influence on the size of sealed width t, and sealing width t is big more, the amount that compressed gas is revealed to piston 8 inwall sides is few more, and is useful more to the working efficiency of rotary compressor; Otherwise, the working efficiency of rotary compressor is descended, and can make the unstable properties of rotary compressor.
In the prior art, see Fig. 3, the common practice is the outer wall chamfering R3 with the exhaust side 8.1 of piston 8, inwall chamfering r3, and this piston 8 has just been determined near the face area of exhaust side 8.1.And the opposite side 8.2 of piston 8 often adopts symplex structure, i.e. R3=R4, and r3=r4 makes the exhaust side 8.1 of piston 8 equate with the face area of opposite side 8.2.Therefore, the face area of the opposite side 8.2 of piston 8 is subjected to the restriction of the face area of exhaust side 8.1, causes the piston 8 and the friction area of the surface of contact of supplementary bearing 7 effectively not to reduce, and to friction power loss is promoted, therefore just can't realize high efficiency.Generally, in order to guarantee sealed width t, often the inwall chamfering r3 of the exhaust side 8.1 of piston 8 can not be excessive, otherwise can cause the inwall of piston 8 and the exhaust otch of cylinder 6 to connect, form leakage, make a gas part of discharging be leaked in the piston 8, thereby influence compressor performance by the exhaust otch.
The model utility content
The purpose of this utility model aims to provide a kind of simple and reasonable, high working efficiency, stable and reliable operation, rotary compressor applied widely, to overcome deficiency of the prior art.
A kind of rotary compressor by this purpose design, comprise the cylinder that is arranged in the housing, be arranged on the piston in the cylinder, main bearing and supplementary bearing are arranged on the both sides of cylinder, main bearing is provided with venting gas appliance, cylinder is provided with the exhaust otch towards a side of main bearing, and its structure characteristic is the face area S2 of piston towards the opposite side of the face area S1＞piston of the exhaust side of main bearing.
Described S1＞S2＞0.4S1.
The outer wall of the opposite side of described piston is provided with first chamfering, and/or the inwall of the opposite side of described piston is provided with second chamfering; And/or; The end face of the opposite side of described piston is provided with groove.
Described first chamfering and/or second chamfering are oblique chamfering, straight chamfering or circular arc chamfering.
The utility model is by the asymmetrical piston structure of design, make piston have littler motion area of contact at the face area of the opposite side that is positioned at non-exhaust, and be not subjected to restriction at the face area that is positioned at exhaust side, promptly pass through the face area of the opposite side of minimizing piston, reduce the moving surface friction area that is in contact with it, and the power consumption of reducing friction, can guarantee simultaneously the requirement of the sealed width t of piston again, pressurized gas amount of leakage when reducing rotary compressor work finally promotes the rotary compressor working efficiency; And, because the chamfering on the inwall of the opposite side of the existing piston of second chamfering on the inwall of the opposite side of piston increases, can improve the oil storage capacity of inwall side of the opposite side of piston, the probability that pressurized gas are revealed from the inwall side direction low-pressure cavity of the opposite side of piston when reducing work; In addition, the increase of oil storage makes that the moving surface of opposite side of piston is lubricated more abundant, has improved the stability and the reliability of rotary compressor.
After the inwall chamfering or breach increase of the utility model with the opposite side of piston, the oil storage space of the existing piston of the oil storage space at the inwall place of the opposite side of this piston is big, form more effectively oil film seal easily, can reduce the leakage of the pressurized gas in the cylinder of rotary compressor, and make opposite side lubricated more abundant of this piston, improved the working efficiency and the reliability of compressor.
The utility model is not only applicable to the single cylinder rotary compressor, and is applicable to twin-tub or multi-cylinder rotary compressor, and it has simple and reasonable, high working efficiency, stable and reliable operation, advantage of wide range of application.
Description of drawings
Fig. 1 is the vertical section structure schematic representation of existing rotary compressor.
Fig. 2 is the main TV structure schematic representation of cylinder part.
Fig. 3 is the structure of piston schematic representation.
Fig. 4 is that A-A among Fig. 3 is to the sectional structure schematic representation.
Fig. 5 is the utility model first example structure schematic representation.
Fig. 6 is that B-B among Fig. 5 is to the sectional structure schematic representation.
Fig. 7 is the utility model second embodiment's a broken section structural representation.
Fig. 8 is the utility model the 3rd embodiment's a broken section structural representation.
Among the figure: 1 is housing, and 2 is stator, and 3 is rotor, and 4 is bent axle, and 5 is main bearing, 6 is cylinder, and 7 is supplementary bearing, and 8 is piston, and 8.1 is the exhaust side of piston, and 8.2 is the opposite side of piston, 9 is baffler, and 9.1 is exhaust port, and 10 is sucking pipe, and 11 is slide plate, and 12 is gas-liquid separator.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Referring to Fig. 1 and Fig. 5-Fig. 6, this rotary compressor, comprise the cylinder 6 that is arranged in the housing 1, be arranged on the piston 8 in the cylinder 6, main bearing 5 and supplementary bearing 7 are arranged on the both sides of cylinder 6, main bearing 5 is provided with venting gas appliance, and cylinder 6 is provided with the exhaust otch towards a side of main bearing 5, and piston 8 is towards the face area S2 of the opposite side 8.2 of the face area S1＞piston 8 of the exhaust side 8.1 of main bearing 5.
When S1＞S2＞0.4S1, the friction power loss of rotary compressor can be reduced to optimum point, and the exhaust side 8.1 of piston 8 still can have bigger face area S1, just moving areas, thereby guarantee piston seal width t, and and then improved the complete machine performance.
The outer wall of the opposite side 8.2 of piston 8 is provided with first chamfering, and/or the inwall of the opposite side 8.2 of piston 8 is provided with second chamfering; And/or; The end face of the opposite side 8.2 of piston 8 is provided with groove.
First chamfering and/or second chamfering are oblique chamfering, straight chamfering or circular arc chamfering, see Fig. 7-Fig. 8.
In order to realize the face area S2 of piston 8 towards the opposite side 8.2 of the face area S1＞piston 8 of the exhaust side 8.1 of main bearing 5, can adopt following method, below at first be that example describes with the circular arc chamfering,
1) can be with the chamfer radius R1 of the chamfering on the outer wall of the exhaust side 8.1 of the chamfer radius R2＞piston 8 of first chamfering on the outer wall of the opposite side 8.2 of the piston in the utility model 8, the chamfer radius of second chamfering on the inwall of the exhaust side of the piston 8 in the utility model then with the same maintenance symmetry of existing piston;
2) can be with the chamfer radius r1 of the chamfering on the inwall of the exhaust side 8.1 of the chamfer radius r2＞piston 8 of second chamfering on the inwall of the opposite side 8.2 of the piston in the utility model 8, the chamfer radius of first chamfering on the outer wall of the exhaust side of the piston 8 in the utility model then with the same maintenance symmetry of existing piston;
3) can be with the chamfer radius R1 of the chamfering on the outer wall of the exhaust side 8.1 of the chamfer radius R2＞piston 8 of first chamfering on the outer wall of the opposite side 8.2 of the piston in the utility model 8, the chamfer radius r1 of the chamfering on the inwall of the exhaust side 8.1 of the chamfer radius r2＞piston 8 of second chamfering on the inwall of the opposite side 8.2 of the piston 8 in the utility model
4) end face of the opposite side 8.2 of the piston in the utility model 8 is provided with groove;
These are 4 years old) item both can individualism, also can be with above-mentioned 1), 2) and 3) while and depositing.
Certainly, in above-mentioned technological scheme, adopting oblique chamfering or straight chamfering to substitute oblique chamfering also is to realize the purpose of this utility model, divides and sees Fig. 7 and Fig. 8.
Owing on the supplementary bearing exhaust otch is not set, so the reducing of the face area of the opposite side of piston can not have influence on sealed width t, so present embodiment is littler than the friction area of the opposite side of existing piston in the friction area of the opposite side of piston, thereby the power consumption of reducing friction has improved the working efficiency of rotary compressor.
More than be the description for the single cylinder rotary compressor, for twin-tub rotation-type compressor, this technological scheme equally can be suitable for.As, for the rotary compressor that has first cylinder and second cylinder, when the exhaust otch of first cylinder is arranged on the main bearing, so, the opposite side of first piston is exactly the side towards central diaphragm, owing to the exhaust otch is not set on the central diaphragm, so the sealed width t of exhaust side that reduces can not have influence on first piston of the face area of the opposite side of first piston.
The above only is a most preferred embodiment of the present utility model; but; the utility model protection domain is not limited thereto; any those skilled in the art is in the disclosed technical scope of the utility model; change easily or change, and this change or variation all should be encompassed in the protection domain of the present utility model.Therefore, the protection domain of the utility model type should be as the criterion with the protection domain of claims.
Claims (4)
1. rotary compressor, comprise the cylinder (6) that is arranged in the housing (1), be arranged on the piston (8) in the cylinder (6), main bearing (5) and supplementary bearing (7) are arranged on the both sides of cylinder (6), main bearing (5) is provided with venting gas appliance, cylinder (6) is provided with the exhaust otch towards a side of main bearing (5), it is characterized in that the face area S2 of piston (8) towards the opposite side (8.2) of the face area S1＞piston (8) of the exhaust side (8.1) of main bearing (5).
2. rotary compressor according to claim 1 is characterized in that described S1＞S2＞0.4S1.
3. rotary compressor according to claim 1 and 2 is characterized in that the outer wall of the opposite side (8.2) of described piston (8) is provided with first chamfering, and/or the inwall of the opposite side (8.2) of described piston (8) is provided with second chamfering; And/or; The end face of the opposite side (8.2) of described piston (8) is provided with groove.
4. rotary compressor according to claim 3 is characterized in that described first chamfering and/or second chamfering are oblique chamfering, straight chamfering or circular arc chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120028796 CN201953657U (en) | 2011-01-27 | 2011-01-27 | Rotary compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120028796 CN201953657U (en) | 2011-01-27 | 2011-01-27 | Rotary compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201953657U true CN201953657U (en) | 2011-08-31 |
Family
ID=44497769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120028796 Expired - Lifetime CN201953657U (en) | 2011-01-27 | 2011-01-27 | Rotary compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201953657U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2011
- 2011-01-27 CN CN 201120028796 patent/CN201953657U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110831 |
|
| CX01 | Expiry of patent term |