CN103696966A - Self-lubricating crankshaft and rotary compressor, air conditioner and heat pump water heater thereof - Google Patents
Self-lubricating crankshaft and rotary compressor, air conditioner and heat pump water heater thereof Download PDFInfo
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- CN103696966A CN103696966A CN201310723945.1A CN201310723945A CN103696966A CN 103696966 A CN103696966 A CN 103696966A CN 201310723945 A CN201310723945 A CN 201310723945A CN 103696966 A CN103696966 A CN 103696966A
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- oil guide
- guide groove
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- minor axis
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 239000011148 porous material Substances 0.000 claims description 7
- 238000005461 lubrication Methods 0.000 claims description 5
- 210000001364 upper extremity Anatomy 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 62
- 238000010586 diagram Methods 0.000 description 9
- 239000012535 impurity Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- Applications Or Details Of Rotary Compressors (AREA)
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Abstract
The invention discloses a self-lubricating crankshaft which comprises a long half shaft, an eccentric circle and a short half shaft, wherein an axial through hole is formed in the center of the crankshaft, and the top and the bottom of the eccentric circle are respectively provided with a first radial oil guide hole and a second radial oil guide hole which are communicated with the through hole; the outer surface of the stub axle shaft is provided with at least one spiral oil guide groove which is obliquely arranged along the axial direction and is communicated with the through hole, the rotating direction of the spiral oil guide groove is opposite to the rotating direction of the crankshaft, the outer surface of the stub axle shaft is also provided with a spiral communication groove which extends from the top end of the spiral oil guide groove to the bottom of the eccentric circle, and the spiral communication groove does not penetrate through the lower end surface of the stub axle shaft; the spiral oil guide groove is spirally arranged by taking the central line of the crankshaft as a center, the angle range of a spiral lead angle alpha of the spiral oil guide groove is 5-85 degrees, and the angle range of an inward concave included angle beta of the opposite two side surfaces of the spiral oil guide groove which rises along the spiral direction is 2-80 degrees; the spiral direction of the spiral communication groove is the same as that of the spiral oil guide groove. The invention also discloses a rotary compressor, an air conditioner and a heat pump water heater using the self-lubricating crankshaft.
Description
[technical field]
The present invention relates to the bent axle of rotary compressor, relate in particular to a kind of self-oiling crankshaft and adopt rotary compressor, air conditioner and the heat pump water heater of this bent axle.
[background technique]
Existing rotary compressor, the main oil guide piece rotation fuel feeding that relies on bent axle lower inside to install, during for the compressor of long-time running under the bad working environments such as the compressor of heat pump water heater special use, T3 and the running of frequency-changeable compressor low frequency, often occur that bent axle is for shortage of oil, lubricant film is thin easily causes the major and minor friction pair of compressor crank shaft and the integrity problem such as eccentric circle position serious wear is even stuck; Compressor operating is after a period of time simultaneously, the major and minor friction pair of bent axle and eccentric circle position all have to a certain degree wearing and tearing even to produce impurity, the impurity that existing compressor crank shaft can not auto-flushing produces, be prone to especially the stuck integrity problem that waits of compressor, secondly existing bent axle is poor because of its running adaptive ability of Rigidity, is not suitable with the operation of later stage in compressor life-span.As depicted in figs. 1 and 2, the thrust surface of rotary compression machine crankshaft particularly, carrying the weight of motor rotor component and the bent axle self of compressor, when running up and formed the planar slide friction pair of a pair of high-speed motion between lower flange plane, although there be the lubricated of certain refrigeration oil between them, but two planes are under Action of Gravity Field, paste tightlyer, lubricated desirable not enough, in actual process of producing product, often occur thrust surface wearing and tearing or lower flange wearing and tearing, long term wear finally causes compressor failure to be damaged.
[summary of the invention]
The invention provides a kind of the lubricated of the major and minor friction pair of bent axle and eccentric circle position that improve, simple in structure, take away frictional heat, improve lubrication effect, reduce compressor friction power loss, improve the self-oiling crankshaft of compressor performance and reliability.
For realizing goal of the invention of the present invention, the technological scheme of employing is:
A kind of self-oiling crankshaft, comprise major semi axis, eccentric circle and semi-minor axis, described eccentric circle is between described major semi axis and described semi-minor axis, the center of described bent axle offers axial through hole, the top of described eccentric circle and bottom are respectively equipped with the first radial guiding oilhole and the second radial guiding oilhole being communicated with described through hole, the oil in described through hole through the first radial guiding oilhole and the second radial guiding oilhole to the supplementary bearing oil jet lubrication of assembling on the main bearing assembling on described major semi axis and described semi-minor axis; The outer surface of described semi-minor axis forms at least one and is in axial direction obliquely installed, and the spiral oil guide groove being communicated with described through hole, the rotation direction of described spiral oil guide groove and described crankshaft rotating opposite direction, on the outer surface of described semi-minor axis, be also provided with the spiral connectivity slot that extend the bottom to described eccentric circle from described spiral oil guide groove top, the lower end surface of the non-through described semi-minor axis of described spiral oil guide groove; The spiral setting centered by crankshaft axis of described spiral oil guide groove, the angular range of the lead angle α of described spiral oil guide groove is 5 °～85 °, and described spiral oil guide groove is 2 °～80 ° along the rise angular range of indent angle β of relative bi-side of Hand of spiral; The rotation direction of described spiral connectivity slot is identical with the rotation direction of spiral oil guide groove.
Preferably, the top of described eccentric circle and bottom are equipped with annular tool withdrawal groove, and described the first radial guiding oilhole and the second radial guiding oilhole are opened in described annular tool withdrawal groove, and described spiral connectivity slot is connected with the annular tool withdrawal groove of described eccentric circle bottom.
Preferably, the angle of the lead angle α of described spiral oil guide groove is 65 °, and the angle of the indent angle β of described spiral oil guide groove is 60 °.
Preferably, described spiral oil guide groove runs through through-hole wall face on described semi-minor axis and the outer surface of described semi-minor axis, and the angular range of the described spirality oil guide slot angle γ that in axial direction through hole center line forms on lower end surface and described semi-minor axis is 2 °～85 °.
Preferably, the axial direction lower end of described spiral oil guide groove forms a slotted eye that connects whole through-hole wall face and semi-minor axis outer surface, and forms a plane of inclination between the slotted eye upper limb of bent axle axial direction and spiral connectivity slot bottom.
Preferably, the angular range of the angle γ ' that on the axis of described slotted eye and described semi-minor axis, through hole center line forms is 2 °～85 °.
Preferably, each self-forming of described spiral oil guide groove upper and lower end in axial direction connects the intercommunicating pore of through-hole wall face and semi-minor axis outer surface, and the bottom surface of described spiral oil guide groove in axial direction be arranged in parallel.
Preferably, the angle γ that the axis of described intercommunicating pore and bent axle semi-minor axis through hole center line form " angular range be 2 °～85 °.
A rotary compressor, this rotary compressor adopts above-mentioned self-oiling crankshaft, and described bent axle is applied to conventional compressor, the frequency changer of low frequency running, the T3 operating mode compressor of high load.
An air conditioner, has applied above-mentioned rotary compressor.
A heat pump water heater, has applied above-mentioned rotary compressor.
The invention has the beneficial effects as follows:
Spiral oil guide groove of the present invention is opened in the semi-minor axis outer surface of bent axle, during work, with crankshaft high-speed, rotate, promoted the height that oils, strengthened the lubricated of the major and minor bearing of bent axle and eccentric circle position, increased oil slick thickness, improved compressor reliability, supply capability and reliability while especially having improved for heat pump water heater the compressor of long-time running under the bad working environments such as compressor, T3 and the running of frequency-changeable compressor low frequency.
Meanwhile, spiral oil guide groove rotates with crankshaft high-speed, when bent axle semi-minor axis or supplementary bearing generation impurity, and the refrigeration oil auto-flushing semi-minor axis of High Rotation Speed and the various impurity between supplementary bearing; The spiral oil guide groove that the semi-minor axis of bent axle is offered, also reaches the area of contact reducing between bent axle semi-minor axis and supplementary bearing, reduces friction factor, reduces compressor power consumption, promotes compressor performance.
In addition, the Pump Body Parts wearing and tearing aggravation of later stage in compressor life-span, the pump oil structures such as the spiral oil guide groove of offering at the semi-minor axis of bent axle, suitable reduction the rigidity of bent axle semi-minor axis, make the bent axle semi-minor axis after improving there is certain amount of elastic deformation, the bent axle semi-minor axis section running adaptive ability in later stage in life-span is strengthened, reduced the eccentric wear of bent axle semi-minor axis, extend the compressor life-span, improve reliability.
[accompanying drawing explanation]
Fig. 1 is the plan view of existing bent axle;
Fig. 2 be in Fig. 1 A to the view of thrust surface;
Fig. 3 is the main TV structure schematic diagram of the bent axle of the embodiment of the present invention one;
Fig. 4 is A-A cross section structure schematic diagram in Fig. 3;
Fig. 5 is B-B cross section structure schematic diagram in Fig. 3;
Fig. 6 is the main TV structure schematic diagram of the bent axle of the embodiment of the present invention two;
Fig. 7 is A '-A ' cross section structure schematic diagram in Fig. 6;
Fig. 8 is B '-B ' cross section structure schematic diagram in Fig. 6;
Fig. 9 is the main TV structure schematic diagram of the bent axle of the embodiment of the present invention three;
Figure 10 is A in Fig. 9 " A " cross section structure schematic diagram;
Figure 11 is B in Fig. 9 " B " cross section structure schematic diagram;
[embodiment]
Embodiment one
A kind of self-oiling crankshaft, as shown in Figures 3 to 5, this bent axle 1 comprises major semi axis 1a, eccentric circle 1b and semi-minor axis 1c, eccentric circle 1b is between described major semi axis 1a and semi-minor axis 1c, at the center of bent axle 1, offer axial through hole 2, the top of eccentric circle 1b and bottom are respectively equipped with the first radial guiding oilhole 4a and the second radial guiding oilhole 4b being communicated with described through hole 2, bent axle 1 eccentric circle 1b top and bottom are also respectively equipped with annular tool withdrawal groove 5, and described the first radial guiding oilhole 4a and the second radial guiding oilhole 4b are opened in annular tool withdrawal groove 5; Oil in through hole 2 through the first radial guiding oilhole 4a and the second radial guiding oilhole 4b to the supplementary bearing oil jet lubrication of assembling on the main bearing assembling on described major semi axis and described semi-minor axis; At the outer surface of the semi-minor axis 1c of bent axle 1, forming one is in axial direction obliquely installed, and the spiral oil guide groove 6 being communicated with through hole 2, the rotation direction of spiral oil guide groove 6 is contrary with described bent axle 1 sense of rotation, on the outer surface of semi-minor axis 1c, be also provided with the spiral connectivity slot 7 that extend the bottom to described eccentric circle 1b from described spiral oil guide groove 6 tops, the lower end surface of the non-through described semi-minor axis 1c of described spiral oil guide groove 6, the non-through described semi-minor axis 1c radial wall of described spiral connectivity slot 7 is also directly communicated with through hole 2; The spiral setting centered by bent axle 1 center line of described spiral oil guide groove 6, the angle of the lead angle α of described spiral oil guide groove 6 is 65 °, obtains climbing power further improve fuel feeding height so that spiral oil guide groove 6 produces relative movement to the lubricant oil in bent axle 1 lower end oil sump while rotatablely moving; Described spiral oil guide groove 6 is 60 ° along the rise angle of indent angle β of relative bi-side of Hand of spiral, makes spiral oil guide groove 6 pumps oil efficiency and effective; Meanwhile, the rotation direction of the rotation direction of described spiral connectivity slot 6 and spiral oil guide groove 7 is identical and arrange away from the second radial guiding oilhole 4b.Like this, by spiral connectivity slot 7, radial guiding oilhole 4, annular tool withdrawal groove 5 are interconnected with spiral oil guide groove 6, form oil return line, during work, fully bent axle 1 and major and minor bearing are lubricated.
As shown in Figure 5, in this embodiment, the interior outside of spiral oil guide groove 6 connects the outer surface setting of whole through hole 2 internal faces and bent axle 1 semi-minor axis, makes the oil duct volume of spiral oil guide groove 6 enough large, effectively pump oil and being convenient in oil sump that impurity is excreted to compressor bottom.In addition, the angular range of the spirality oil guide slot 6 angle γ that in axial direction lower end surface and bent axle 1 semi-minor axis through hole 2 center lines form is preferably 50 °～70 °, facilitates bent axle and the impurity of major and minor bearing wear generation effectively to drain.
Embodiment two
As shown in Figure 6 to 8, be with embodiment's one difference, the axial direction lower end of spiral oil guide groove 6 forms the slotted eye 8 of whole through hole 2 internal faces of perforation and bent axle 1 semi-minor axis 1c outer surface, and form a plane of inclination between slotted eye 8 upper limbs on bent axle 1 axial direction and spiral connectivity slot 6 bottoms, changed the pump oil direction of spiral oil guide groove 6 bottom surfaces, make pump oil pressure stronger, pump oil better effects if.Meanwhile, the angular range of the angle γ ' that slotted eye 8 lower end surfaces and bent axle 1 semi-minor axis 1c through hole 2 center lines form is preferably 50 °～70 °, facilitates equally bent axle 1 and the impurity that major and minor bearing wear produces effectively to drain.
Embodiment three
As shown in Figures 9 to 11, be with embodiment's one difference, the axial direction upper and lower end of spiral oil guide groove 6 forms respectively the intercommunicating pore 9 that connects whole through hole 2 internal faces and bent axle 1 semi-minor axis 1c outer surface, and the bottom surface of spiral oil guide groove 6 in axial direction be arranged in parallel, through hole 2 passes through two intercommunicating pores 9 to spiral oil guide groove 6, selectively oily to the different parts pump of bent axle 1 semi-minor axis 1c, pump oil pressure is strong, pump is oily effective.In addition, the angle γ that each intercommunicating pore 9 lower end surface and bent axle 1 semi-minor axis place through hole 2 center lines form " angular range be preferably 50 °～70 °, facilitate equally bent axle and the impurity of major and minor bearing wear generation effectively to drain, the excretion of impurity is more convenient.
This bent axle is applicable to rotary compressor, is particularly suitable for conventional compressor, the frequency changer of low frequency running, the T3 operating mode compressor of high load; Corresponding compressor is applicable on air conditioner and heat pump water heater; Improved the lubricated of bent axle and major and minor bearing, make initiatively jet flow of the refrigeration oil of lubricant oil on the surface of contact of bent axle and major and minor bearing, take away sooner frictional heat, the better lubrication effect that improves, reduced friction factor, successful on the working life of improving compressor reliability, prolongation compressor.
The above embodiment just, for preferred embodiment of the present invention, not limits practical range of the present invention with this, and the equivalence that all shapes according to the present invention, structure and principle are done changes, and all should be covered by protection scope of the present invention.
Claims (11)
1. a self-oiling crankshaft, comprise major semi axis, eccentric circle and semi-minor axis, described eccentric circle is between described major semi axis and described semi-minor axis, the center of described bent axle offers axial through hole, the top of described eccentric circle and bottom are respectively equipped with the first radial guiding oilhole and the second radial guiding oilhole being communicated with described through hole, the oil in described through hole through the first radial guiding oilhole and the second radial guiding oilhole to the supplementary bearing oil jet lubrication of assembling on the main bearing assembling on described major semi axis and described semi-minor axis; It is characterized in that:
The outer surface of described semi-minor axis forms at least one and is in axial direction obliquely installed, and the spiral oil guide groove being communicated with described through hole, the rotation direction of described spiral oil guide groove and described crankshaft rotating opposite direction, on the outer surface of described semi-minor axis, be also provided with the spiral connectivity slot that extend the bottom to described eccentric circle from described spiral oil guide groove top, the lower end surface of the non-through described semi-minor axis of described spiral oil guide groove;
The spiral setting centered by crankshaft axis of described spiral oil guide groove, the angular range of the lead angle α of described spiral oil guide groove is 5 °～85 °, and described spiral oil guide groove is 2 °～80 ° along the rise angular range of indent angle β of relative bi-side of Hand of spiral;
The rotation direction of described spiral connectivity slot is identical with the rotation direction of spiral oil guide groove.
2. self-oiling crankshaft according to claim 1, it is characterized in that, the top of described eccentric circle and bottom are equipped with annular tool withdrawal groove, described the first radial guiding oilhole and the second radial guiding oilhole are opened in described annular tool withdrawal groove, and described spiral connectivity slot is connected with the annular tool withdrawal groove of described eccentric circle bottom.
3. self-oiling crankshaft according to claim 1 and 2, is characterized in that, the angle of the lead angle α of described spiral oil guide groove is 65 °, and the angle of the indent angle β of described spiral oil guide groove is 60 °.
4. self-oiling crankshaft according to claim 1 and 2, it is characterized in that, described spiral oil guide groove runs through through-hole wall face on described semi-minor axis and the outer surface of described semi-minor axis, and the angular range of the described spirality oil guide slot angle γ that in axial direction through hole center line forms on lower end surface and described semi-minor axis is 2 °～85 °.
5. self-oiling crankshaft according to claim 1 and 2, it is characterized in that, the axial direction lower end of described spiral oil guide groove forms a slotted eye that connects whole through-hole wall face and semi-minor axis outer surface, and forms a plane of inclination between the slotted eye upper limb of bent axle axial direction and spiral connectivity slot bottom.
6. a kind of self-oiling crankshaft according to claim 5, is characterized in that, the angular range of the angle γ ' that on the axis of described slotted eye and described semi-minor axis, through hole center line forms is 2 °～85 °.
7. a kind of self-oiling crankshaft according to claim 1 and 2, it is characterized in that, each self-forming of described spiral oil guide groove upper and lower end in axial direction connects the intercommunicating pore of through-hole wall face and semi-minor axis outer surface, and the bottom surface of described spiral oil guide groove in axial direction be arranged in parallel.
8. self-oiling crankshaft according to claim 7, is characterized in that, the angle γ that the axis of described intercommunicating pore and bent axle semi-minor axis through hole center line form " angular range be 2 °～85 °.
9. a rotary compressor, is characterized in that, this rotary compressor adopts the self-oiling crankshaft described in claim 1 to 8 any one.
10. an air conditioner, is characterized in that, has applied rotary compressor as claimed in claim 9.
11. 1 kinds of heat pump water heaters, is characterized in that, have applied rotary compressor as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310723945.1A CN103696966B (en) | 2013-12-24 | 2013-12-24 | Self-lubricating crankshaft and rotary compressor, air conditioner and heat pump water heater thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310723945.1A CN103696966B (en) | 2013-12-24 | 2013-12-24 | Self-lubricating crankshaft and rotary compressor, air conditioner and heat pump water heater thereof |
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| Publication Number | Publication Date |
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| CN103696966A true CN103696966A (en) | 2014-04-02 |
| CN103696966B CN103696966B (en) | 2015-12-02 |
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| CN201310723945.1A Active CN103696966B (en) | 2013-12-24 | 2013-12-24 | Self-lubricating crankshaft and rotary compressor, air conditioner and heat pump water heater thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570277A (en) * | 2016-02-29 | 2016-05-11 | 珠海凌达压缩机有限公司 | Crankshaft and compressor with same |
| CN108730188A (en) * | 2017-04-18 | 2018-11-02 | 艾默生环境优化技术(苏州)有限公司 | Drive shaft for compressor and compressor |
| WO2020258580A1 (en) * | 2019-06-28 | 2020-12-30 | 安徽美芝精密制造有限公司 | Pump body assembly, compressor, and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105570277A (en) * | 2016-02-29 | 2016-05-11 | 珠海凌达压缩机有限公司 | Crankshaft and compressor with same |
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| CN108730188B (en) * | 2017-04-18 | 2024-04-19 | 谷轮环境科技（苏州）有限公司 | Drive shaft for compressor and compressor |
| WO2020258580A1 (en) * | 2019-06-28 | 2020-12-30 | 安徽美芝精密制造有限公司 | Pump body assembly, compressor, and air conditioner |
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| US11460028B2 (en) | 2019-06-28 | 2022-10-04 | Anhui Meizhi Precision Manufacturing Co., Ltd. | Pump body assembly, compressor and air conditioner |
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| CN103696966B (en) | 2015-12-02 |
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