CN201078319Y - High effective pump oil system for miniature hermetically sealed compressor - Google Patents
High effective pump oil system for miniature hermetically sealed compressor Download PDFInfo
- Publication number
- CN201078319Y CN201078319Y CNU2007200869262U CN200720086926U CN201078319Y CN 201078319 Y CN201078319 Y CN 201078319Y CN U2007200869262 U CNU2007200869262 U CN U2007200869262U CN 200720086926 U CN200720086926 U CN 200720086926U CN 201078319 Y CN201078319 Y CN 201078319Y
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- CN
- China
- Prior art keywords
- rotor
- bent axle
- pump oil
- oil
- crank shaft
- Prior art date
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- Expired - Lifetime
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Abstract
The utility model belongs to a high efficient oil pumping system for a mini-type hermetically sealed compressor, comprising a rotor, a crank shaft and an oil suction pipe. More particularly, the crank shaft and the oil suction pipe are respectively in interference erection joint with the both ends of an internal hole of the rotor, and the distance between the corresponding butts of the crank shaft and the oil suction pipe is no less than 10mm. The improvement of the utility model brings the rotor into the oil pumping, and the rotary linear speed of the refrigerator oil can be improved by the larger internal hole of the rotor, so that a larger centrifugal force can be gained. Under the effect of the centrifugal force, the sufficient lubrication of the kinematical pair and the friction pair are ensured by the refrigerator oil through the crank shaft and each hole of a connecting rod. By adopting the oil pumping structure of the utility model, the diameter of the crank shaft can be reduced; accordingly, the area of the friction pair of the kinematical pair is reduced as well as the purpose of promoting the COP value of the compressor is achieved.
Description
(1) technical field:
The utility model relates to the improvement technology of Piston Refrigerant Compreessor, is a kind of high effective pump oil system that is applied to small-sized totally-enclosed refrigerating compressor.
(2) background technique:
At present, the crankshaft eccentric formula centrifugal pump oil structure of in the compressor industry, generally using, this oil pumping system bent axle is assemblied on the cylinder block main bearing hole, then fuel sucking pipe is pressed into bent axle major axis axis hole, by the fuel sucking pipe positioning and guiding, rotor is inserted in bent axle fully by hot jacket; Fuel sucking pipe, bent axle have formed the pump oil runner of lubricant oil, this kind mode pump oil effect is remarkable, the compressor kinematic pair is fully lubricated, but this mode is owing to will use crankshaft eccentric apart from pump oil, throw of eccentric is little, the oil mass that compressor need lubricate can't guarantee, and big throw of eccentric needs major axis, minor axis, the eccentric shaft diameter of axle of bent axle bigger, this certainly will cause the compressor friction horsepower to increase according to the compressor power principle, therefore, this kind large-diameter bent axle extensively is used in general effect, big specification compressor, and is unsuitable for light duty compressor.
(3) summary of the invention:
The purpose of this utility model will overcome the existing pump oil system exactly and be subjected to structural limitations, pump oil ability is lower, increase pump oil ability and increase the bent axle diameter of axle, can increase the problem of power consumpiton again, a kind of high effective pump oil system that is applied to small-sized totally-enclosed refrigerating compressor is provided.
Concrete scheme of the present utility model is: the oil pumping system at existing small-sized totally-enclosed refrigerating compressor improves, it includes rotor, bent axle, fuel sucking pipe, it is characterized in that: bent axle is connected with rotor inner hole two ends interference assembling respectively with fuel sucking pipe, and the opposing end surface spacing of bent axle and fuel sucking pipe is not less than 10mm.
For guaranteeing the reliability of docking of bent axle and fuel sucking pipe and rotor, the interference load segment of described bent axle and rotor inner hole is more than the 15mm in the utility model.The interference load segment of described fuel sucking pipe and rotor inner hole is more than the 12mm.
For guaranteeing that pump oil reaches optimum efficiency, the coaxality of fuel sucking pipe described in the utility model and rotor inner hole is controlled in the 0.05mm.
Be to reduce the resistance of the pump oil duct joint in the utility model, pack into the endoporus of rotor the inner of described bent axle has 1.6 ± 0.20 * 45 ° of chamferings.
Architecture advances of the present utility model makes corresponding the shortening of major axis (need not pass whole rotor) of bent axle, and the diameter of axle can correspondingly make less; The then corresponding increase diameter of fuel sucking pipe (docking by docking to have changed into rotor inner hole with the bent axle endoporus originally) helps pump oil.The utility model is when improving rotor pump oil ability, reduction to input power has greatly improved, common oil pumping system rotor and bent axle major axis interference fit, oil product directly is pumped to the bent axle major axis after by fuel sucking pipe, be pumped into each kinematic pair by crankshaft oil hole again and participate in the lubricated of compressor kinematic pair, rotor does not participate in pump oil, and bent axle major axis of the present utility model shortens, and the bent axle major axis is not all to squeeze into rotor, but a part is driven into rotor, utilize rotor to participate in pump oil, the other end of rotor is squeezed into fuel sucking pipe, and therefore, the diameter of axle of bent axle can reduce, after the fuel sucking pipe internal face forms oil film, participate in pump oil by the rotor inner hole wall, because the rotor inner hole footpath is big than the bent axle major axis diameter of axle, so oil product flow into rotor inner hole along the fuel sucking pipe inwall, can improve centrifugal force greatly, improve pump oil ability.Adopt the utility model structure can reduce the consumptive material of bent axle, because the weight of bent axle reduces, cost also reduces, therefore, the rotary inertia of the bent axle that compressor start moment need overcome is just little, and the power that is consumed is littler, utilizes the new type crank oil pumping system, input power that can bigger reduction compressor, thus reach the purpose that improves COP.
(4) description of drawings:
Accompanying drawing is a structure sectional view of the present utility model.
Among the figure: 1-bent axle, 2-rotor, 3-fuel sucking pipe.
(5) embodiment:
Referring to accompanying drawing, the utility model is made up of bent axle 1, rotor 2, fuel sucking pipe 3, its fit is to adopt interference fit to be pressed into the endoporus two ends of rotor 2 at the longitudinal end of bent axle 1 and fuel sucking pipe 3 oil outlet ends, and is pressed into segment length and is not less than 15mm and 12mm respectively, to guarantee reliability; The coaxality that should guarantee fuel sucking pipe 3 and rotor simultaneously and should guarantee that bent axle 1 and two opposite end interplanar distances of fuel sucking pipe 3 are not less than 10mm in 0.05mm.For reducing the resistance of pump oil passage joint, the longitudinal end filler opening place of bent axle 1 is shaped on bigger chamfering (1.6 ± 0.20 * 45 °) in the present embodiment.
Claims (5)
1. high effective pump oil system that is applied to small-sized totally-enclosed refrigerating compressor, include rotor, bent axle, fuel sucking pipe, it is characterized in that: bent axle is connected with rotor inner hole two ends interference assembling respectively with fuel sucking pipe, and the opposing end surface spacing of bent axle and fuel sucking pipe is not less than 10mm.
2. a kind of high effective pump oil system that is applied to small-sized totally-enclosed refrigerating compressor according to claim 1, it is characterized in that: the interference load segment of bent axle and rotor inner hole is more than the 15mm.
3. a kind of high effective pump oil system that is applied to small-sized totally-enclosed refrigerating compressor according to claim 1, it is characterized in that: the interference load segment of fuel sucking pipe and rotor inner hole is more than the 12mm.
4. a kind of high effective pump oil system that is applied to small-sized totally-enclosed refrigerating compressor according to claim 1, it is characterized in that: the coaxality of fuel sucking pipe and rotor inner hole is controlled in the 0.05mm.
5. a kind of high effective pump oil system that is applied to small-sized totally-enclosed refrigerating compressor according to claim 1 is characterized in that: pack into the endoporus of rotor the inner of described bent axle has 1.6 ± 0.20 * 45 ° of chamferings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200869262U CN201078319Y (en) | 2007-09-12 | 2007-09-12 | High effective pump oil system for miniature hermetically sealed compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200869262U CN201078319Y (en) | 2007-09-12 | 2007-09-12 | High effective pump oil system for miniature hermetically sealed compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201078319Y true CN201078319Y (en) | 2008-06-25 |
Family
ID=39570380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200869262U Expired - Lifetime CN201078319Y (en) | 2007-09-12 | 2007-09-12 | High effective pump oil system for miniature hermetically sealed compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201078319Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949060A (en) * | 2017-04-19 | 2017-07-14 | 西安庆安制冷设备股份有限公司 | A kind of rotor-type compressor oil suction structure and its method for designing |
| CN112940682A (en) * | 2021-02-04 | 2021-06-11 | 青岛万宝压缩机有限公司 | Refrigerant composition, mixed working medium and compressor |
-
2007
- 2007-09-12 CN CNU2007200869262U patent/CN201078319Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949060A (en) * | 2017-04-19 | 2017-07-14 | 西安庆安制冷设备股份有限公司 | A kind of rotor-type compressor oil suction structure and its method for designing |
| CN106949060B (en) * | 2017-04-19 | 2019-03-05 | 西安庆安制冷设备股份有限公司 | A kind of rotor-type compressor oil suction structure and its design method |
| CN112940682A (en) * | 2021-02-04 | 2021-06-11 | 青岛万宝压缩机有限公司 | Refrigerant composition, mixed working medium and compressor |
| CN112940682B (en) * | 2021-02-04 | 2022-02-01 | 青岛万宝压缩机有限公司 | Compressor suitable for Linde-Hampson type throttling refrigerating machine |
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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: 20080625 |
|
| CX01 | Expiry of patent term |