CN105114285A - Crankshaft assembly of compressor and compressor with same - Google Patents
Crankshaft assembly of compressor and compressor with same Download PDFInfo
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- CN105114285A CN105114285A CN201510397716.4A CN201510397716A CN105114285A CN 105114285 A CN105114285 A CN 105114285A CN 201510397716 A CN201510397716 A CN 201510397716A CN 105114285 A CN105114285 A CN 105114285A
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- main shaft
- compressor
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Abstract
The invention discloses a crankshaft assembly of a compressor and a compressor with the same. The crankshaft assembly of the compressor includes: a crankshaft including a main shaft internally defining an eccentric oil passage with an opening in the lower end of the eccentric oil passage, wherein the eccentric oil passage is eccentrically arranged relative to a central axis of the main shaft, a side of an outer wall surface of the eccentric oil passage, adjacent to the main shaft, is provided with an oil outlet hole communicated with the outside world, and a side of the outer wall surface of the eccentric oil passage, away from the main shaft, is provided with an oil drain hole communicated with the outside world; and an oil suction pump which is arranged below the main shaft and is connected to the lower end of the main shaft, wherein the oil suction pump is provided with an oil suction hole communicated with the eccentric oil passage. According to the crankshaft assembly of the compressor in the invention, at a low revolving speed, the oil is drained out from the oil outlet hole, and the oil drain hole cannot drain the oil, so that the requirements of oil pumping at the low revolving speed are assured; after the revolving speed rises to a certain value, the oil drain hole starts to drain the oil, and the oil outlet hole and the oil drain hole drain oil at the same time, so that the normal operation of the compressor is assured.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, more specifically, relate to a kind of crankshaft group of compressor and there is its compressor.
Background technique
Compressor is as the core component of refrigeration appliance, and its frequency conversion intelligent trend is more and more obvious.Bent axle is as the critical component of frequency conversion reciprocating compressor, and Main Function is the transmission of power and the oil pump of compressor housing is delivered in cylinder piston.
Relative to traditional fixed rotating speed compressor, frequency-changeable compressor becomes very thorny technical barrier in pump oil.Reciprocal compressor is because being low pressure in housing and without pressure reduction, and the centrifugal force that crank pump oil can only be produced by crankshaft rotating carries out.Square being directly proportional of the height of pump oil and rotating speed, during the slow-speed of revolution, pumping ability is poor, and during high rotating speed, pumping ability is too strong.General slow-speed of revolution pumping ability can by increasing bent axle diameter, shortening the method solutions such as crankshaft length.But pump oil mass is too many during high rotating speed, and the oil mass entering cylinder in the unit time rapidly increases, causes compressor noise to increase and increased by the oil mass that cylinder exhaust enters refrigeration system, and causing the stuck and refrigeration system blocking refrigeration of compressor oil starvation to be deteriorated.It is conflict body that the slow-speed of revolution, high rotating speed oil, and slow-speed of revolution pumping ability meets and high speed pump oil is too much, controls high speed pump oil mass and will inevitably cause again lowspeed pump oil scarce capacity.This is also the technical barrier that present a lot of refrigeration compressor producer runs into.
Summary of the invention
The present invention is intended to one of solve the problems of the technologies described above at least to a certain extent.
For this reason, the present invention proposes a kind of crankshaft group of compressor, and this crankshaft group not only meets the requirement of slow-speed of revolution pump oil, and the problem that when solving high rotating speed, pump oil mass is too many.
The present invention also proposes a kind of compressor with the crankshaft group of above-mentioned compressor.
The crankshaft group of the compressor of embodiment according to a first aspect of the present invention, comprise: bent axle, described bent axle comprises main shaft, the eccentric oil duct of lower ending opening is limited with in described main shaft, described eccentric oil duct is arranged relative to the center axis of described main shaft, the side of the outer wall of the described main shaft of vicinity of described eccentric oil duct is provided with the oil outlet with extraneous conducting, and the side of the outer wall away from described main shaft of described eccentric oil duct is provided with the oil leak hole with extraneous conducting; Oil scavenge pump, described oil scavenge pump to be located at below described main shaft and to be connected with the lower end of described main shaft, and described oil scavenge pump is provided with the oil-sucking hole with described eccentric oil duct conducting.
According to the crankshaft group of the compressor of the embodiment of the present invention, by arranging eccentric oil duct in main shaft, and set out oilhole and oil leak hole respectively in the both sides of eccentric oil duct, at the low rotational speed, oil is discharged from the oil outlet of main shaft, oil leak hole is not fuel-displaced, pump oil requirement under the guarantee slow-speed of revolution, after rotating speed rises to certain value, oil leak hole starts fuel-displaced, oil outlet, oil leak hole oil extraction simultaneously, the oil of oil outlet is pumped in compresser cylinder, play normal lubrication, the oil of oil leak hole is discharged to flow to bottom compressor and again participates in circulation, ensure the normal operation of compressor.
In addition, according to the crankshaft group of the compressor of the embodiment of the present invention, following additional technical characteristics can also be had:
According to one embodiment of present invention, the axis of described oil outlet and the axis of described oil leak hole extend along the radial direction of described main shaft respectively.
According to one embodiment of present invention, described oil outlet and described oil leak hole are located at the relative both sides of described main shaft respectively, the axis of described oil outlet and the axis being parallel of described oil leak hole.
According to one embodiment of present invention, described oil-sucking hole and described main shaft are coaxially arranged.
According to one embodiment of present invention, the side of outer wall of the described main shaft of vicinity of described eccentric oil duct and the distance of the central axis of described main shaft are R1, the distance of the side of the outer wall away from described main shaft of described eccentric oil duct and the central axis of described main shaft is R2, the radius of described oil-sucking hole is r, R1>R2>r.
According to one embodiment of present invention, described oil outlet is positioned at above described oil leak hole.
According to one embodiment of present invention, in described main shaft, be also provided with exhaust passage, described exhaust passage to be located at above described eccentric oil duct and with described eccentric oil duct conducting, described exhaust passage and described eccentric oil duct with one voice coaxial with described main shaft.
According to one embodiment of present invention, the outer wall of the lower end of described main shaft is provided with at least one mounting groove, in the outer wall that the upper end of described oil scavenge pump is set in described main shaft and described oil scavenge pump be connected with described mounting groove clamping.
According to one embodiment of present invention, the madial wall interference fit of described main shaft and described oil scavenge pump.
The compressor of embodiment according to a second aspect of the present invention, comprises the crankshaft group of the compressor according to above-described embodiment.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of the crankshaft group of compressor according to the embodiment of the present invention;
Fig. 2 is a sectional view of the crankshaft group of compressor according to the embodiment of the present invention;
Fig. 3 is another sectional view of the crankshaft group of compressor according to the embodiment of the present invention;
Fig. 4 is another sectional view of the crankshaft group of compressor according to the embodiment of the present invention.
Reference character:
Crankshaft group 100;
Bent axle 10; Main shaft 11; The first side wall face 111; Second wall 112; Oil outlet 13; Oil leak hole 14; Exhaust passage 15; With one voice 16;
Oil scavenge pump 20; Oil-sucking hole 21.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
First the crankshaft group 100 according to the compressor of the embodiment of the present invention is specifically described by reference to the accompanying drawings below.
As shown in Figures 1 to 4, bent axle 10 and oil scavenge pump 20 is comprised according to the crankshaft group 100 of the compressor of the embodiment of the present invention.
Specifically, bent axle 10 comprises main shaft 11, the eccentric oil duct 12 of lower ending opening is limited with in main shaft 11, eccentric oil duct 12 is arranged relative to the center axis of main shaft 11, the side of the outer wall of the contiguous main shaft 11 of eccentric oil duct 12 is provided with the oil outlet 13 with extraneous conducting, and the side of the outer wall away from main shaft 11 of eccentric oil duct 12 is provided with the oil leak hole 14 with extraneous conducting.Oil scavenge pump 20 to be located at below main shaft 11 and to be connected with the lower end of main shaft 11, and oil scavenge pump 20 is provided with the oil-sucking hole 21 with the conducting of eccentric oil duct 12.
In other words, the crankshaft group 100 according to the embodiment of the present invention forms primarily of bent axle 10 and oil scavenge pump 20 two-part, and bent axle 10 generally includes main shaft 11 and eccentric shaft, in this application, is described in detail to the structure of main shaft 11.The bottom of main shaft 11 is provided with eccentric oil duct 12, the central axis disalignment of eccentric oil duct 12 and main shaft 11, but arranges relative to the center axis of main shaft 11.Oil scavenge pump 20 is located at below main shaft 11, and oil scavenge pump 20 is provided with oil-sucking hole 21, and oil-sucking hole 21 and the conducting of eccentric oil duct 12, oil pump is entered in eccentric oil duct 12 by oil-sucking hole 21 by oil scavenge pump 20.
Wherein, eccentric oil duct 12 is the passage arranged relative to the center axis of main shaft 11, distance between the outer wall of the then main shaft 11 of eccentric oil duct 12 and adjacent side must be less than the distance between the outer wall of the main shaft 11 of eccentric oil duct 12 and opposite side, with a side wall surface of eccentric oil duct 12 contiguous in the outer wall of main shaft 11 for the first side wall face 111, be the second wall 112 away from a side wall surface of eccentric oil duct 12 in the outer wall of main shaft 11.
Main shaft 11 offers and the oil outlet 13 of eccentric oil duct 12 conducting and oil leak hole 14, oil outlet 13 and oil leak hole 14 are located at the both sides of main shaft 11 respectively, oil outlet 13 is located on a side wall surface of contiguous eccentric oil duct 12 in the outer wall of main shaft 11, namely on the first wall 111, oil leak hole 14 is located at away from a side wall surface of eccentric oil duct 12 in the outer wall of main shaft 11, namely on the second wall 112.
According to Bernoulli's equation, when bent axle 10 rotates, the isostatic surface of oil parabolically shape in eccentric oil duct 12, isostatic surface with main shaft 11 center of bent axle 10 for symmetry center.The side conducting of the outer wall of the contiguous main shaft 11 of oil outlet 13 and eccentric oil duct 12, oil leak hole 14 is arranged on the relative side of oil outlet 13.At bent axle 10 with when comparatively the slow-speed of revolution operates, only have oil outlet 13 to have oil to discharge, after rotating speed rises to certain value, have oil to release in the oil leak hole 14 of relative side.
Thus, according to the crankshaft group 100 of the compressor of the embodiment of the present invention, by arranging eccentric oil duct 12 in main shaft 11, and set out oilhole 13 and oil leak hole 14 respectively in the both sides of eccentric oil duct 12, at the low rotational speed, oil is discharged from the oil outlet 13 of main shaft 11, oil leak hole 14 is not fuel-displaced, pump oil requirement under the guarantee slow-speed of revolution, after rotating speed rises to certain value, oil leak hole 14 starts fuel-displaced, oil outlet 13, oil leak hole 14 oil extraction simultaneously, the oil of oil outlet 13 is pumped in compresser cylinder, play normal lubrication, the oil of oil leak hole 14 is discharged to flow to bottom compressor and again participates in circulation, ensure the normal operation of compressor.
According to one embodiment of present invention, the axis of oil outlet 13 and the axis of oil leak hole 14 extend along the radial direction of main shaft 11 respectively.Preferably, oil outlet 13 and oil leak hole 14 are located at the relative both sides of main shaft 11 respectively, the axis of oil outlet 13 and the axis being parallel of oil leak hole 14.
That is, in this application, main shaft 11 is formed as column, and eccentric oil duct 12 is also formed as column, oil outlet 13 on main shaft 11 and oil leak hole 14 are formed as the through hole extended along the radial direction of main shaft 11 respectively, and oil outlet 13 and oil leak hole 14 are located at the both sides be oppositely arranged of main shaft 11 respectively.
In embodiments more of the present invention, oil-sucking hole 21 and main shaft 11 are coaxially arranged.Further, the side of outer wall of contiguous main shaft 11 and the distance of the central axis of main shaft 11 of eccentric oil duct 12 are R1, the eccentric side of the outer wall away from main shaft 11 of oil duct 12 and the distance of the central axis of main shaft 11 are R2, the radius of oil-sucking hole 21 is r, R1>R2>r.
Thus, the oil outlet 13 of this structure and oil leak hole 14 are more reasonable at the distributed architecture of main shaft 11, more accurate to the control of the fuel-displaced of main shaft 11 and draining, can improve the performance of compressor further.
According to one embodiment of present invention, oil outlet 13 is positioned at above oil leak hole 14.Usually oil is had to exist in oil scavenge pump 20, according to the distance of oil leak hole 14 to oil level, the crankshaft group 100 that can calculate the embodiment of the present application starts rotating speed during draining, also can control the dredge oil amount of the crankshaft group 100 in the unit time according to the diameter of oil leak hole 14, make the control of compressor more accurate.
In embodiments more of the present invention, in main shaft 11, be also provided with exhaust passage 15, exhaust passage 15 to be located at above eccentric oil duct 12 and with the conducting of eccentric oil duct 12, exhaust passage 15 and eccentric oil duct 12 with one voice 16 coaxial with main shaft 11.
Particularly, as shown in Figure 4, in this application, in main shaft 11, be also provided with the exhaust passage 15 with the conducting of eccentric oil duct 12, and exhaust passage 15 is coaxial with main shaft 11 with the conducting position of eccentric oil duct 12.
According to one embodiment of present invention, the outer wall of the lower end of main shaft 11 is provided with at least one mounting groove (not shown), in the outer wall that the upper end of oil scavenge pump 20 is set in main shaft 11 and oil scavenge pump 20 be connected with mounting groove clamping.Preferably, the madial wall interference fit of main shaft 11 and oil scavenge pump 20.
That is, in this application, main shaft 11 is not adopt the Placement of conventional crankshafts assembly to be connected with oil scavenge pump 12, but arranges mounting groove in the outer wall of main shaft 11, and oil scavenge pump 12 is set on main shaft 11 with main shaft interference fit.
Thus, according to the crankshaft group 100 of the compressor of the embodiment of the present invention, by arranging at least one mounting groove in the outer wall of the main shaft 11 of bent axle 10, and oil scavenge pump 20 is set in the outer wall of main shaft 11, oil scavenge pump 20 can be connected with mounting groove clamping, thus realize being fixedly connected with of oil scavenge pump 20 and bent axle 10, the structure of the crankshaft group 100 of this compressor is simple, each parts connection is compact, connection reliability is high, can effectively avoid oil scavenge pump 20 to come off from bent axle 10.
The crankshaft group 100 according to above-described embodiment is comprised according to the compressor of the embodiment of the present invention, because crankshaft group 100 according to the above embodiment of the present invention has above-mentioned technique effect, therefore, compressor according to the embodiment of the present invention also has corresponding technique effect, namely by very economical, be very easy to the structural design realized, effectively overcome variable-frequency reciprocating compressor at the too much technical barrier of high speed pump oil mass, make frequency-changeable compressor pump oil mass when high rotating speed controlled, avoid entering from design the high noisy and high system oil inlet quantity that cylinder oil mass too much causes, the high reliability guarantee of reciprocating frequency-changeable compressor is played an important role.
According to the compressor of the embodiment of the present invention other form and operation be all known for those of ordinary skills, be not described in detail here.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is less than second feature.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention when not departing from principle of the present invention and aim, revising, replacing and modification.
Claims (10)
1. a crankshaft group for compressor, is characterized in that, comprising:
Bent axle, described bent axle comprises main shaft, the eccentric oil duct of lower ending opening is limited with in described main shaft, described eccentric oil duct is arranged relative to the center axis of described main shaft, the side of the outer wall of the described main shaft of vicinity of described eccentric oil duct is provided with the oil outlet with extraneous conducting, and the side of the outer wall away from described main shaft of described eccentric oil duct is provided with the oil leak hole with extraneous conducting;
Oil scavenge pump, described oil scavenge pump to be located at below described main shaft and to be connected with the lower end of described main shaft, and described oil scavenge pump is provided with the oil-sucking hole with described eccentric oil duct conducting.
2. the crankshaft group of compressor according to claim 1, is characterized in that, the axis of described oil outlet and the axis of described oil leak hole extend along the radial direction of described main shaft respectively.
3. the crankshaft group of compressor according to claim 2, is characterized in that, described oil outlet and described oil leak hole are located at the relative both sides of described main shaft respectively, the axis of described oil outlet and the axis being parallel of described oil leak hole.
4. the crankshaft group of compressor according to claim 1, is characterized in that, described oil-sucking hole and described main shaft are coaxially arranged.
5. the crankshaft group of compressor according to claim 1, it is characterized in that, the side of outer wall of the described main shaft of vicinity of described eccentric oil duct and the distance of the central axis of described main shaft are R1, the distance of the side of the outer wall away from described main shaft of described eccentric oil duct and the central axis of described main shaft is R2, the radius of described oil-sucking hole is r, R1>R2>r.
6. the crankshaft group of compressor according to claim 1, is characterized in that, described oil outlet is positioned at above described oil leak hole.
7. the crankshaft group of compressor according to claim 1, it is characterized in that, also be provided with exhaust passage in described main shaft, described exhaust passage to be located at above described eccentric oil duct and with described eccentric oil duct conducting, described exhaust passage and described eccentric oil duct with one voice coaxial with described main shaft.
8. the crankshaft group of the compressor according to any one of claim 1-7, it is characterized in that, the outer wall of the lower end of described main shaft is provided with at least one mounting groove, in the outer wall that the upper end of described oil scavenge pump is set in described main shaft and described oil scavenge pump be connected with described mounting groove clamping.
9. the crankshaft group of compressor according to claim 8, is characterized in that, the madial wall interference fit of described main shaft and described oil scavenge pump.
10. a compressor, is characterized in that, comprises the crankshaft group of the compressor according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510397716.4A CN105114285A (en) | 2015-07-07 | 2015-07-07 | Crankshaft assembly of compressor and compressor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510397716.4A CN105114285A (en) | 2015-07-07 | 2015-07-07 | Crankshaft assembly of compressor and compressor with same |
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| Publication Number | Publication Date |
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| CN105114285A true CN105114285A (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510397716.4A Pending CN105114285A (en) | 2015-07-07 | 2015-07-07 | Crankshaft assembly of compressor and compressor with same |
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| Country | Link |
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| CN (1) | CN105114285A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018053943A1 (en) * | 2016-09-20 | 2018-03-29 | 安徽美芝制冷设备有限公司 | Oiling assembly for refrigerator compressor and compressor |
| CN111794970A (en) * | 2020-06-05 | 2020-10-20 | 广州万宝集团压缩机有限公司 | Compressor oil pumping structure, compressor and refrigeration equipment |
| CN112483358A (en) * | 2020-11-27 | 2021-03-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Oil return structure, compressor and refrigerator |
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| WO2018053943A1 (en) * | 2016-09-20 | 2018-03-29 | 安徽美芝制冷设备有限公司 | Oiling assembly for refrigerator compressor and compressor |
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| CN112483358A (en) * | 2020-11-27 | 2021-03-12 | 珠海格力节能环保制冷技术研究中心有限公司 | Oil return structure, compressor and refrigerator |
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Application publication date: 20151202 |
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