CN106401915B - A kind of oil pumping system for crankshaft and the compressor with it - Google Patents
A kind of oil pumping system for crankshaft and the compressor with it Download PDFInfo
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- CN106401915B CN106401915B CN201610841043.1A CN201610841043A CN106401915B CN 106401915 B CN106401915 B CN 106401915B CN 201610841043 A CN201610841043 A CN 201610841043A CN 106401915 B CN106401915 B CN 106401915B
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- Prior art keywords
- oil
- crankshaft
- pump
- pumping system
- housing
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0284—Constructional details, e.g. reservoirs in the casing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/20—Rotary pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2210/00—Applications
- F16N2210/16—Pumps
Abstract
The present invention provides a kind of oil pumping system for crankshaft and the compressor with it, the oil pumping system includes the oil pump (1) for being pumped to oil inside crankshaft in oilhole, the oil pump (1) includes the cylinder-shaped coat (12) of cylindric pump core (11) and the radially outer for being socketed in the pump core (11), pre-determined distance is spaced between the inner radial wall of the housing (12) and the radial outer wall of the pump core (11), and the pre-determined distance at interval axially extends to form annular groove, so that the crankshaft can be inserted into the annular groove, the pump core (11) can be inserted into the oilhole simultaneously.The radial spacing between outer circle pipe fitting and oilhole inner wall in the prior art can be reduced through the invention, to efficiently reduce the friction power loss between crankshaft and oil pump, improve the operational reliability, stability and safety of oil pumping system；The frictional force of oil with crankshaft oil hole, pump core outer surface can also be improved, pumping ability when oil pumping system low frequency is improved.
Description
Technical field
The invention belongs to Compressor Technology fields, and in particular to a kind of oil pumping system for crankshaft and the compression with it
Machine.
Background technique
Traditional technology at present：Full-sealed piston type compressor at present, compression motor spindle are made of an oil sump shell, compress
Machine machine core bottom is provided with an oil pump, is connected to rotor or crankshaft lower end, and keeps with one heart, in compressor operating, electricity
Machine drives oil pump that oil is extracted into the position for needing to lubricate, to meet the long-term efficient operation of compressor.Constant speed compressor master at present
Oil pump structure is wanted, a thin wall type round tube, upper end aperture is big, and lower end aperture is small, and the Oil Guide of a piece of spiral shape or straight is inserted into centre
Piece, referred to as centrifugal pump, the structure pump oil principle are that liquid rises along wall surface under the action of the centrifugal force, and the pump of the type is able to satisfy fixed
Use under the conditions of frequency machine 50Hz.With the application of frequency conversion (variable speed) piston compressor, the operation of frequency conversion piston compressor frequency
15~75Hz of range, in low frequency 15Hz (900rpm) operation, centrifugal oil pump shown in Fig. 2 is unable to satisfy pump oil demand, and in height
Pump oil amount is excessive when frequency.If low frequency occurrence pump oil is insufficient, components cause power to increase for there is inordinate wear；If pump oil
Too much, energy is wasted, sump liquid level is low, and injection oil mass increases, and easily causes oil spout and become more.Therefore frequency conversion piston compressor
Middle pump oil is a relatively crucial problem.
For example, conventional centrifugal oil pump can be by reducing entrance hole diameter r0, or increase crankshaft and oil pump radius r1 etc.
Method improves pumping ability, but its pumping ability or limited, on current newest type product, passes through that reduce complete machine high
Degree, to reduce oil pump pump oil height to be achieved, generally may be implemented pump oil in 1200rpm, lower frequency is unable to satisfy
It is required that.
With the immediate prior art of application scheme：
1) application number：93105025.1 the pump uses spiral pump configuration：There is a pump core, periphery design has spiral
Groove, one end are connected to crankshaft lower end, and one end is immersed in oil sump, and periphery is cased with a round pipe fitting, are fixed on by an arm-piece
On motor stator, round pipe fitting and spiral pump core keep it is coaxial and between have certain interval, when crankshaft is rotated in the case where motor drives,
Pump core also follows rotation, and oily rising is made under helicla flute ramp effect, and peripheral circular pipe fitting provides a frictional force to liquid
Slow down liquid in rotation speed, to improve pump oil amount.But it is easy to let out there are gap between round pipe fitting and rotor inner hole wall
Dew.
2) another similar scheme 200980101146.2, helicla flute are arranged on outer round tube part, and outer circle pipe fitting is solid
Due on rotor, pump core is a straight wall round tube part, is inserted into the outer circle pipe fitting center with helicla flute, and bottom end passes through a fixation with steel wire
In on motor stator, it is made not follow outer tube member to rotate.Motor rotation drives the rotation of outer circle pipe fitting, by helicla flute by oil pump
Upper portion requiring lubrication.
3) another similar scheme 201010294414.4, it is similar with upper two schemes, helical groove structure is inverted and is put
On the fixed non-rotary part in center, while several changes are carried out to helicla flute.
Defect in the presence of the prior art：
Conventional technical drawback：Centrifugal oil pump is generally used for 2500-3000rpm, can not pump under the conditions of low speed 1200rpm
Oil, high speed 4500 turns then pump oil amount it is excessive.
Above closest to scheme defect：Although 93105025.1 low frequency energy fuel feeding, between outer round tube and rotor inner wall
There are leakages.And there are pump oil amount problems of too under high-speed condition.
Although 200980101146.2 schemes are there is no leakage, part is more, and structure is complicated, and assembly precision is not high, no
Easily realize Automated assembly；There are integrity problems with plastic part friction for the non-polished surface of crankshaft metal material, and in high speed
Under the conditions of there are pump oil amount problems of too.
Since compressor in the prior art is there are pump oil amount when high revolving speed is excessive, when the slow-speed of revolution can not pump oil, oil easily lets out
Leakage, and part is more, structure is complicated, assembly precision is not high, is not easy to realize Automated assembly, the non-polished surface of axis metal material and
There are integrity problem, crankshaft is directly contacted with oil sump to be caused oil sump vortex occur and makes the technologies such as liquid level decline for plastic part friction
Problem, therefore researching and designing of the present invention goes out a kind of oil pumping system for crankshaft and the compressor with it.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming rubbing between oil pumping system and crankshaft in the prior art
The biggish defect of power consumption is wiped, to provide a kind of oil pumping system for crankshaft and the compressor with it.
The present invention provides a kind of oil pumping system for crankshaft comprising for oil to be pumped to inside crankshaft in oilhole
Oil pump, the oil pump include the cylinder-shaped coat of cylindric pump core with the radially outer for being socketed in the pump core, the housing
Pre-determined distance is spaced between inner radial wall and the radial outer wall of the pump core to form annular groove, so that the crankshaft can be inserted
Enter in the annular groove, the pump core can be inserted into the oilhole simultaneously.
Preferably, it is concentrically disposed between the pump core and the housing and is arranged concentrically with the crank spindle.
Preferably, the first radial distance, institute are spaced between the radial outer wall of the pump core and the inner radial wall of the oilhole
It states and is spaced the second radial distance between the inner radial wall of housing and the radial outer wall of the crankshaft, and the first radial distance ratio
Second radial distance is big.
Preferably, the inner radial wall of the columnar housing is provided with step structure at least one in the axial direction.
Preferably, it is linked together between the pump core and the housing by integrally formed mode, or passes through fission
It is mutually connected and links together.
Preferably, one end face of housing is plate face, and the plate face connects with an end face of the pump core so that described outer
Set is connected as one with the pump core；The other end of the housing is open to form open end, can accommodate vertically at least
The partial pump core；And multiple oil inlet through-holes are provided in the axial direction in the plate face.
Preferably, it is located on the outer peripheral surface of the housing at the open end position or close to the open end
At least one supporting lug for supporting the housing is additionally provided at position.
Preferably, on the outer peripheral surface of the pump core along its axis direction, radially inwardly offer spiral groove or diameter
It is raised to spiral shape is outwards machined with.
Preferably, the pump core and the housing are the moulding being process by Shooting Technique.
Preferably, further include oil pump bracket for being supported to the oil pump, the oil pump bracket includes circular ring shape
For accommodating the receiving portion of the oil pump, and radially extend to outside from described accommodation section for fixing the oil
Pump at least one extension of bracket.
Preferably, the internal diameter of described accommodation section is bigger than the outer diameter of the housing.
Preferably, limiting slot is provided in the axial direction on inner wall at least the one of described accommodation section, and in the housing
On outer radial periphery face at least one at axially disposed have the limit raised line matched with the limiting slot.
Preferably, buckle, the Yi Jiyong for supporting the oil pump bracket are additionally provided on the free end of the extension
In the guide groove of guiding assembly.
The present invention also provides a kind of compressors, including the crankshaft with internal oilhole and positioned at the oil of the compression motor spindle
Pond further includes oil pumping system above-mentioned, and the oil pumping system is for the oil in the oil sump to be pumped in the crankshaft
In portion's oilhole.
Preferably, including insulation frame for stator, the oil pumping system are fixed on the insulation frame for stator.
A kind of oil pumping system for crankshaft provided by the invention and the compressor with it have the advantages that：
1. the oil pumping system for crankshaft and the compressor with it of the invention, by the way that oil pump to be provided for being inserted into
Pump core in crankshaft oil hole and for making the housing in crankshaft insertion annular groove, effectively forms the structure of two layers of nested type,
And between crankshaft, oilhole be laminated, nestedly connect, compared with the prior art in oil pump inner core and outer circle pipe fitting set simultaneously
It sets in crankshaft oil hole, efficiently reduces the radial spacing between outer circle pipe fitting and oilhole inner wall, to efficiently reduce
Friction power loss between crankshaft and oil pump improves the operational reliability, stability and safety of oil pumping system；
2. the oil pumping system for crankshaft and the compressor with it of the invention, by the way that oil pump to be provided for being inserted into
Pump core in crankshaft oil hole and for making the housing in crankshaft insertion annular groove, effectively forms the structure of two layers of nested type,
And between crankshaft, oilhole be laminated, nestedly connect, compared with the prior art in oil pump inner core and outer circle pipe fitting set simultaneously
It sets in crankshaft oil hole, can prevent due to the generation between housing and oilhole inner wall there are gap and there is a phenomenon where oil leak,
It ensure that the good lubrication effect for needing oily position well；
3. the oil pumping system for crankshaft and the compressor with it of the invention, by the way that oil pump to be provided for being inserted into
Pump core in crankshaft oil hole and for making the housing in crankshaft insertion annular groove, effectively forms the structure of two layers of nested type,
And between crankshaft, oilhole be laminated, nestedly connect, compared with the prior art in oil pump inner core and outer circle pipe fitting set simultaneously
It sets in crankshaft oil hole, efficiently reduces the radial spacing between outer circle pipe fitting and oilhole inner wall, to improve oil and song
The frictional force of frictional force between shafting oil hole and oil and pump core outer surface, and then when can effectively improve oil pumping system low frequency
Pumping ability；
4. the oil pumping system for crankshaft and the compressor with it of the invention, by by the radial outer wall of pump core and oil
Spacing distance between the inner radial wall in hole is set greater than the interval between the inner radial wall of housing and the radial outer wall of crankshaft
The mode of distance can guarantee not to be in contact between pump core and crankshaft oil hole inner wall, as far as possible, to the maximum extent thus maximum
The frictional dissipation between crankshaft and oil pump is reduced to limit, the safety in operation and reliability of oil pumping system are improved；
5. the oil pumping system for crankshaft and the compressor with it of the invention, by will be between pump core and the housing
It is linked together by integrally formed mode or in such a way that fission is mutually connected and links together, can be made
It obtains pump core and housing is integrally fixed, do not rotated with the rotation of crankshaft, can prevent the bottom of pump core or housing from inserting in this way
Enter causes oil sump whirlpool occur and further results in the case where pasta declines in the oil sump of bottom due to rotation, and preventing can not
The situation for being normally drawn onto lubricating oil and influencing compressor normal work occurs；
6. the oil pumping system for crankshaft and the compressor with it of the invention, by setting plate for the lower end of housing
Face, which can be connected by it with the bottom surface of pump core, set the upper end to open end can accommodate at least part of pump
Core and can also be formed accommodate crankshaft insertion ring channel structures pass through so that pump core and housing effectively be made to link together
The structure type of multiple oil inlet through-holes, can effectively act as the effect of current limliting in the plate face of housing, the oil stream amount when low frequency
When lesser, metering hole drag effect is unobvious, and when high frequency operation, drag effect is obvious, and pump oil amount mistake can be effectively prevented
The problems such as decline of sump liquid level caused by big and excessive distributive value；
7. the oil pumping system for crankshaft and the compressor with it of the invention, by the way that supporting lug is arranged on the coat
Oil pump can be supported on oil pump bracket in vertical direction, by the way that limit raised line is arranged on the coat and on oil pump bracket
The structure type that matched limiting slot is arranged can limit the relative rotation between oil pump and oil pump bracket, prevent
Therebetween relative rotation occurs, to effectively guarantee that oil pump will not be rotated with the rotation of crankshaft in work operation；
8. the oil pumping system for crankshaft and the compressor with it of the invention, by the outer peripheral surface of pump core along it
Axis direction radially inwardly offers spiral groove or is radially outwardly machined with spiral protrusion, enables to
It is formed between the spiral groove or spiral shape protrusion and crankshaft oil hole inner wall and accommodates and be oriented to the channel that oil flows up, played
The effectively effect of Oil Guide；
9. the oil pumping system for crankshaft and the compressor with it of the invention, by the extension of oil pump bracket
Be arranged buckle can the snap-in function through buckling that oil pump bracket is supported on the other component of compressor such as casing, motor is fixed
On the positions such as son, successfully it is packed into when can be assembled oil pump bracket on the corresponding component on compressor by guide groove.
Detailed description of the invention
Fig. 1 is the overall assembling structural schematic diagram of the oil pumping system for crankshaft of the invention；
Fig. 2 is overall assembling structure sectional view of the oil pumping system for crankshaft of the invention along crankshaft axial direction；
Fig. 3 is the first schematic perspective view of the oil pump of the oil pumping system for crankshaft of the invention；
Fig. 4 is the second schematic perspective view of the oil pump of the oil pumping system for crankshaft of the invention；
Fig. 5 is that the oil pump of the oil pumping system for crankshaft of the invention matches the cuing open along crankshaft axial direction at position with crankshaft
View；
Fig. 6 is the three-dimensional structure diagram of the oil pump bracket of the oil pumping system for crankshaft of the invention.
Appended drawing reference is expressed as in figure：
1-oil pump, 11-pump cores, 12-housings, 13-oil inlet through-holes, 14-supporting lugs, 15-spiral shapes protrusion,
16-limit raised lines, 2-oil pump brackets, 21-receiving portions, 22-extensions, 23-limiting slots, 24-buckles, 25-guiding
Slot, 26-resilient U-shaped arms, 3-insulation frame for stator, 31-insulation framework tooth sockets, 4-cylinder blocks, 5-motor stators, 6-electricity
Machine rotor, 7-crankshafts, 71-crankshaft outer surfaces, 72-oilholes, 73-crankshaft inner walls.
Specific embodiment
As shown in Figs. 1-5, the present invention provides a kind of oil pumping system for crankshaft comprising for oil to be pumped to crankshaft
Oil pump 1 in internal oilhole, the oil pump 1 include the cylinder of cylindric pump core 11 and the radially outer for being socketed in the pump core 11
Shape housing 12 is spaced pre-determined distance to form ring between the inner radial wall of the housing 12 and the radial outer wall of the pump core 11
Shape slot, so that the crankshaft can be inserted into the annular groove, the pump core 11 can be inserted into the oilhole simultaneously.The housing
12 inner radial wall for being matched with the periphery wall radial outside of the crankshaft, the pump core 11 be used for in the oilhole
Wall matches.
1. the oil pumping system for crankshaft of the invention passes through the pump core being provided for oil pump in insertion crankshaft oil hole
With for making the housing in crankshaft insertion annular groove, effectively form the structure of two layers of nested type, and with crankshaft, oilhole it
Between stacking, nestedly connect, compared with the prior art in oil pump inner core and outer circle pipe fitting simultaneously be arranged in crankshaft oil hole, have
The radial spacing between outer circle pipe fitting and oilhole inner wall is reduced to effect, to efficiently reduce rubbing between crankshaft and oil pump
Power consumption is wiped, the operational reliability, stability and safety of oil pumping system are improved；
2. the oil pumping system for crankshaft of the invention passes through the pump core being provided for oil pump in insertion crankshaft oil hole
With for making the housing in crankshaft insertion annular groove, effectively form the structure of two layers of nested type, and with crankshaft, oilhole it
Between stacking, nestedly connect, compared with the prior art in oil pump inner core and outer circle pipe fitting simultaneously be arranged in crankshaft oil hole, energy
It enough prevents due to the generation between housing and oilhole inner wall there are gap and there is a phenomenon where oil leak, ensure that needs oil portion well
The good lubrication effect of position；
3. the oil pumping system for crankshaft of the invention passes through the pump core being provided for oil pump in insertion crankshaft oil hole
With for making the housing in crankshaft insertion annular groove, effectively form the structure of two layers of nested type, and with crankshaft, oilhole it
Between stacking, nestedly connect, compared with the prior art in oil pump inner core and outer circle pipe fitting simultaneously be arranged in crankshaft oil hole, have
The radial spacing between outer circle pipe fitting and oilhole inner wall is reduced to effect, to improve the frictional force between oil and crankshaft oil hole
With oil and the frictional force of pump core outer surface, and then pumping ability when can effectively improve oil pumping system low frequency.
Preferably, it is concentrically disposed between the pump core 11 and the housing 12 and (crankshaft includes with the crank spindle
Crank spindle and eccentric shaft) it is arranged concentrically.Such set-up mode can guarantee same between pump core, housing and crankshaft well
Axis degree, simplify structure so that assembly be easy, it is easy to accomplish Automated assembly, and due to three is arranged concentrically can also be into one
Step prevents crankshaft in rotary course since pump core and/or housing lead to crankshaft and pump core or crankshaft and outer in the presence of eccentric therewith
Friction or collision occur between set, to further guarantee that oil pumping system is reliably and securely run.
Preferably, it is spaced the first radial distance between the radial outer wall of the pump core 11 and the inner radial wall of the oilhole,
Be spaced the second radial distance between the inner radial wall of the housing 12 and the radial outer wall of the crankshaft, and described first it is radial away from
From bigger than second radial distance.By the way that the spacing distance between the radial outer wall of pump core and the inner radial wall of oilhole is arranged
The mode of spacing distance between the radial outer wall of inner radial wall and crankshaft greater than housing, can as far as possible, to greatest extent
Ground guarantees not to be in contact between pump core and crankshaft oil hole inner wall, to reduce rubbing between crankshaft and oil pump to the maximum extent
It wears consumption, improves the safety in operation and reliability of oil pumping system.
Preferably, the inner radial wall of the columnar housing be in the axial direction (i.e. crankshaft is axial, housing, pump core and
The axial direction of crankshaft is all the same) on be provided with the terraced structure of step at least one, by the way that step is arranged in housing inner radial wall
The structure of type, enable to positioned at the stage portion internal diameter larger part inner wall between crankshaft outer wall at a distance from relative to internal diameter compared with
Can be bigger for small place, to effectively further reduce the contact area between housing and crankshaft outer surface, further have
Reduce friction power loss to effect.
Preferably, it is linked together, or passed through by integrally formed mode between the pump core 11 and the housing 12
Fission, which is mutually connected, to link together.By will be connected between pump core and the housing by integrally formed mode
Together or in such a way that fission is mutually connected and links together, enable to pump core integrally fixed with housing,
It is not rotated with the rotation of crankshaft, can prevent from causing in the bottom of pump core or housing insertion bottom oil sump due to rotation in this way
There is whirlpool and further results in the case where pasta declines in oil sump, and prevents from not normally being drawn onto lubricating oil and influencing compressor
The situation of normal work occurs；It can also make that oil pump structure is simple, part is few, assembly precision is high, is easily achieved automatic makeup
Match, reduces production cost.
Preferably, 12 1 end face of housing is plate face, and the plate face connects with an end face of the pump core 11 so that institute
Housing 12 is stated to be connected as one with the pump core 11；The other end of the housing 12 is open to form open end, can be along axial direction
It is upper to accommodate at least part of pump core 11；And multiple oil inlet through-holes 13 are provided in the axial direction in the plate face.By will be outer
The lower end of set be set as plate face can be connected by it with the bottom surface of pump core, set the upper end to open end can
It accommodates at least part of pump core and the ring channel structures for accommodating crankshaft insertion can also be formed, to effectively make pump core and housing
It links together, the preferred embodiment that this frame mode is structure as a whole；It is logical by oil inlets multiple in the plate face of housing
The structure type in hole can effectively act as the effect of current limliting, when low frequency, oil stream amount is lesser, metering hole drag effect
Unobvious, when high frequency operation, drag effect is obvious, and the excessive caused sump liquid level decline of pump oil amount and spray can be effectively prevented
The problems such as oil mass is excessive, the pore size of the oil inlet through-hole, which can according to need, here is changed.
Preferably, it is located on the outer peripheral surface of the housing 12 at the open end position or close to the open end
Position at be additionally provided at least one supporting lug 14 for supporting the housing 12.It is convex by the way that bearing is arranged on the coat
Oil pump can be supported on oil pump bracket by block in vertical direction, especially the convex block is set at the position of open end or
At the position of open end, since open end is the crankshaft for accommodating pump core and being inserted under upper, open
Mouthful end face is located at the upper end of oil pump under normal conditions, then the convex block is set at the position of open end or close to open end
Oil pump can be hung on to the upper surface of oil pump bracket at the position in face by the convex block, form the bearing of vertical direction, and set
The area that housing lower end is contacted with the oil in oil sump can effectively be increased in the position close to or at upper end, to improve oil
Pumping efficiency.
Preferably, on the outer peripheral surface of the pump core 11 along its axis direction, radially inwardly offer spiral groove
Or radially outwardly it is machined with spiral raised 15.By on the outer peripheral surface of pump core along its axis direction, radially inwardly
It offers spiral groove or is radially outwardly machined with spiral protrusion, enable to the spiral groove or spiral shape
It is formed between protrusion and crankshaft oil hole inner wall and accommodates and be oriented to the channel that oil flows up, play the role of effectively Oil Guide.
Preferably, moulding of the pump core 11 with the housing 12 to be process by Shooting Technique.This is this hair
The material preferably produced and processing technology of the building block (pump core and housing) of bright oil pump, can either be expired using moulding
The requirement of sufficient function and intensity, additionally it is possible to be effectively saved cost.
It preferably, further include oil pump bracket 2 for being supported to the oil pump 1, the oil pump bracket 2 includes annulus
The receiving portion 21 (being formed circular for accommodating the accommodating chamber of the oil pump) for accommodating the oil pump of shape, and from described
At least one extension 22 for being used to fix the oil pump bracket 2 that radially outside ground extends in receiving portion 21.It is preferred that institute
The diameter both ends for stating center excessively in receiving portion extend to the mode of radial outside.By above structure form comprising receiving portion and
Oil pump can be effectively fixed to be, for example, to press on the other component of compressor by oil pump bracket by the oil pump bracket of extension
Contracting machine casing, motor stator etc. ensure that the stability of oil pump in the process of running.
Preferably, the internal diameter of described accommodation section 21 is bigger than the outer diameter of the housing 12.It enables to accommodate with this configuration
A gap, since crankshaft can generate bounce in motor rotary course, the gap are generated between the inner wall and outer casing outer wall in portion
Presence can be good at eliminate bounce bring influence.The further preferred gap is 0.5-1mm.
Preferably, limiting slot 23 is offered along axially through ground on inner wall at least the one of described accommodation section 21, and
On the outer radial periphery face of the housing 12 at least one at axially disposed have the limit raised line matched with the limiting slot 23
16.The two is enabled to co-operatively to assemble, setting limiting slot and by way of limiting raised line to complete the outer of oil pump
Effective assembly between set and oil pump bracket.
Preferably, be additionally provided on the free end of the extension 22 buckle 24 for supporting the oil pump bracket 2, with
And the guide groove 25 for being oriented to assembly.It being capable of the snap-in function through buckling by the way that buckle is arranged on the extension of oil pump bracket
Oil pump bracket is supported on the other component of compressor on the position such as casing, motor stator, can be incited somebody to action by guide groove
It is successfully packed into when oil pump bracket assembly is on the corresponding component on compressor.
The present invention also provides a kind of compressors, including the crankshaft with internal oilhole and positioned at the oil of the compression motor spindle
Pond further includes oil pumping system above-mentioned, and the oil pumping system is for the oil in the oil sump to be pumped in the crankshaft
In portion's oilhole.
1. compressor of the invention, due to including oil pumping system above-mentioned, by the way that oil pump is provided for insertion crankshaft
Pump core in oilhole and for making the housing in crankshaft insertion annular groove, effectively forms the structure of two layers of nested type, and
Between crankshaft, oilhole be laminated, nestedly connect, compared with the prior art in oil pump inner core and outer circle pipe fitting simultaneously be arranged exist
In crankshaft oil hole, the radial spacing between outer circle pipe fitting and oilhole inner wall is efficiently reduced, to efficiently reduce crankshaft
Friction power loss between oil pump improves the operational reliability, stability and safety of oil pumping system；
2. compressor of the invention, due to including oil pumping system above-mentioned, by the way that oil pump is provided for insertion crankshaft
Pump core in oilhole and for making the housing in crankshaft insertion annular groove, effectively forms the structure of two layers of nested type, and
Between crankshaft, oilhole be laminated, nestedly connect, compared with the prior art in oil pump inner core and outer circle pipe fitting simultaneously be arranged exist
In crankshaft oil hole, it can prevent due to the generation between housing and oilhole inner wall there are gap and there is a phenomenon where oil leak, well
Ground ensure that the good lubrication effect for needing oily position.
Preferably, including insulation frame for stator, the oil pumping system are fixed on the insulation frame for stator.This is this
The specific fixed installation position of the oil pumping system of invention, since insulation frame for stator is largely normally fixed on casing
, therefore oil pumping system of the invention is fixed on insulation frame for stator and enables to oil pumping system that can be stably fixed
And installation.
The working principle of the invention and preferred embodiment is described below
The invention reside in providing a kind of oil pumping system, including：
Spiral oil pump：There is spiral pump core at center, is equipped with cylindrical jacket in pump core periphery, pump core is inserted into crankshaft bottom inner hole
Constitute oil pumping system.Its working principle is that crankshaft rotates under motor drive, the frictional force of crankshaft base apertures inner wall and oil is driven
Oil is moved along spiral pump core helicla flute, and oil pump is remain stationary under the action of oil pump bracket.The setting of pump core periphery is cylindrical outer
Set is less than the gap of spiral pump core and crankshaft bottom inner hole with crankshaft outer surface fit clearance, since crankshaft outer surface is finishing
Face, so friction is very small, and crankshaft bottom inner hole is generally non-polished surface, larger with the frictional force of oil, advantageously
In pump oil.Setting matches stupefied with oil pump bracket around cylindrical jacket, plays the role of preventing rotation.
Oil pump bracket：Centre bore covers on oil pump, and center bore is bigger than oil pump cylindrical jacket, and it is concentric can to play adjustment
The effect of degree, centre bore border guide groove 25 are matched with oil pump cylindrical jacket limit raised line 16.The flexible card in bracket both ends
24 structures are detained, variable-frequency motor insulation framework tooth slot position is directly anchored to, installation is simple, it is easy to accomplish Automated assembly.
The technical issues of solution：
1, pump oil under the conditions of realizing compressor slow-speed of revolution 600rpm at 80 DEG C of oil temperature.It can control at high speed simultaneously
Oil mass is excessive.
2, the friction for reducing oil pump and crankshaft reduces power consumption, improves reliability, and oil sump rotation nest is avoided to occur causing under liquid level
Drop.
3, simplify structure, concentricity is easily guaranteed that, assembly is easy, it is easy to accomplish Automated assembly.
Beneficial effect：
1. improving frequency-changeable compressor in low frequency pumping ability, compressor slow-speed of revolution 600rpm condition is realized at 80 DEG C of oil temperature
Lower pump oil.It is excessive to can control oil mass at high speed simultaneously.Therefore compressor range of operation can be extended, enables compressor
With the standby operation of more low frequency on refrigerator, energy consumption is reduced；Oil mass can be controlled by metering hole in high frequency simultaneously, avoided out
Existing oil spout is excessive, and leading to problems such as liquid level decline petrol starvation, valve block liquid hammer, cylinder band liquid occur causes cooling capacity to decline.
2. oil pump and crankshaft outer circle polished surface (there is originally, do not need additional processing) contact, and contact area compared with
Small (it is believed that adjustment), therefore friction power loss is small, is conducive to COP raising and oil pump reliability, oil pump and rotor concentricity are easy
Guarantee.Crankshaft rotates in oil pump, avoids and contacts with the direct of oil sump, so that crankshaft rotation is not easy to cause the rotation of oil sump liquid
Turn, being less prone to rotation nest causes liquid level to decline.
3. moulding there are two, structure is simple, and matching requirements are low, and the production and general assembly of part are easy to realize automation
Assembly.
Preferred embodiment：
It is exhausted that totally enclosed type piston compressor oil pumping system generally comprises cylinder block 4, motor stator 5, rotor 6, stator
Edge skeleton 3, oil pump bracket 2, crankshaft 7, oil pump 1, housing bottom oil sump.Crankshaft 7 is inserted into the axis hole of cylinder block 4, rotor 6
Interference is covered in crankshaft outer surface 71, and motor stator 5 is fixed on cylinder block 4 by screw, and crankshaft can revolve under motor effect
Turn.The spiral pump core 11 of oil pump 1 is inserted into crankshaft bottom oilhole 72, and 12 inner wall of cylindrical jacket is placed on crankshaft outer surface 71, oil pump
The centre bore of bracket 2 is installed on 1 periphery of oil pump, and centre bore limiting slot 23 is matched with anti-rotational limit raised line 16, guarantees oil pump 1
Crankshaft 7 is not followed to rotate.Oil pump bracket 2 stretches out two symmetrical resilient U-shaped arms 26, and the both sides of U-shaped arm respectively have one to buckle 24, two
The size of buckle is greater than the thickness of insulation framework tooth socket 31, guarantees that buckle 24 is stuck among insulation frame for stator tooth socket 31 and does not take off
It falls, two buckles have guide groove 25 convenient for assembly.The relative motion of resilient U-shaped arm is tightened when installation, vertical to be packed into insulation framework two
It is flicked after between tooth socket, so that buckle hooks at the upper surface or extension of insulation framework.Oil pump 1 and crankshaft 7 are inserted into shell bottom
In portion's oil sump, liquid level does not exceed the height of oil pump cylindrical jacket, and the rotation that crankshaft rotates if more than can cause
The rotation of oil sump liquid, but influence very little.
Motor rotation band dynamic crankshaft rotates, and spiral oil pump 1 cannot rotate under the fixation of oil pump bracket 2, crankshaft outer surface
71 be in contact with 12 inner wall of cylindrical jacket of spiral oil pump 1 and it is opposite slide, between spiral pump core 11 and crankshaft inner wall 73
Gap is bigger than crankshaft outer surface 71 and the gap of cylindrical jacket inner wall, therefore nothing connects between spiral pump core 11 and crankshaft inner wall 73
Touching, for crankshaft inner wall without carrying out Precision Machining, it and oily frictional force are just bigger, are conducive to promote low frequency pumping ability.Spiral shell
12 inner wall of cylindrical jacket for revolving oil pump 1 is stepped hole, therefore the contact area of itself and crankshaft outer surface 71 can reduce, and is reduced
Friction power loss guarantees the reliability of part.The centre bore of oil pump bracket 2 is bigger than oil pump outer diameter, and there are the gaps 0.5-1mm, in electricity
Crankshaft can generate bounce in machine rotary course, and the bring for eliminating bounce well there are one in this gap influences.It supports convex
Block 14 is to guarantee that oil pump 1 can be supported by oil pump bracket 2 not falling off.
Since crankshaft rotates in oil pump, it is not directly contacted with oil sump, therefore crankshaft rotation not will lead to oil sump and whirlpool occurs
Liquid level is caused to decline.The size of oil pump bottom oil inlet through-hole 13 can be easy to change, when low frequency, oil stream amount is lesser,
Oil inlet through-hole drag effect is unobvious, and when high frequency operation, drag effect is obvious, and it is excessive caused that pump oil amount can be effectively prevented
The problems such as sump liquid level decline and excessive distributive value.
Those skilled in the art will readily recognize that above-mentioned each advantageous manner can be free under the premise of not conflicting
Ground combination, superposition.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.With
It is only the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not
Under the premise of being detached from the technology of the present invention principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as this
The protection scope of invention.
Claims (14)
1. a kind of oil pumping system for crankshaft, it is characterised in that：Including the oil for being pumped to oil inside crankshaft in oilhole
It pumps (1), the oil pump (1) includes the cylinder-shaped coat of cylindric pump core (11) and the radially outer for being socketed in the pump core (11)
(12), pre-determined distance is spaced between the inner radial wall of the housing (12) and the radial outer wall of the pump core (11) to form ring
Shape slot, so that the crankshaft can be inserted into the annular groove, the pump core (11) can be inserted into the oilhole simultaneously；
The first radial distance, the housing are spaced between the radial outer wall of the pump core (11) and the inner radial wall of the oilhole
(12) the second radial distance is spaced between the radial outer wall of inner radial wall and the crankshaft, and first radial distance compares institute
It is big to state the second radial distance.
2. oil pumping system according to claim 1, it is characterised in that：It is same between the pump core (11) and the housing (12)
Heart is arranged and is arranged concentrically with the crank spindle.
3. oil pumping system described in one of -2 according to claim 1, it is characterised in that：The inner radial wall of the columnar housing
It is provided with step structure at least one in the axial direction.
4. oil pumping system described in one of -2 according to claim 1, it is characterised in that：The pump core (11) and the housing (12)
Between linked together by integrally formed mode, or be mutually connected and linked together by fission.
5. oil pumping system according to claim 4, it is characterised in that：(12) one end face of housing is plate face, and the plate
Face connects with an end face of the pump core (11) so that the housing (12) is connected as one with the pump core (11)；The housing
(12) other end is open to form open end, can accommodate at least part of pump core (11) vertically；And described
Multiple oil inlet through-holes (13) are provided in the axial direction in plate face.
6. oil pumping system according to claim 5, it is characterised in that：It is located on the outer peripheral surface of the housing (12) described
At least one for supporting the housing (12) is additionally provided at open end position or at the position of the open end
A supporting lug (14).
7. oil pumping system described in one of -2 according to claim 1, it is characterised in that：Along it on the outer peripheral surface of the pump core (11)
Axis direction radially inwardly offers spiral groove or is radially outwardly machined with spiral shape protrusion (15).
8. oil pumping system described in one of -2 according to claim 1, it is characterised in that：The pump core (11) and the housing (12)
Moulding to be process by Shooting Technique.
9. oil pumping system described in one of -2 according to claim 1, it is characterised in that：Further include for the oil pump (1) into
The oil pump bracket (2) of row bearing, the oil pump bracket (2) include circular ring shape for accommodating the receiving portion (21) of the oil pump,
And at least one extension for being used to fix the oil pump bracket (2) that radially outside ground extends from described accommodation section (21)
Portion (22).
10. oil pumping system according to claim 9, it is characterised in that：The internal diameter of described accommodation section (21) is than the housing
(12) outer diameter is big.
11. oil pumping system according to claim 9, it is characterised in that：The inner wall at least the one of described accommodation section (21)
On be provided in the axial direction with limiting slot (23), and axially disposed at least one on the outer radial periphery face of the housing (12) have
The limit raised line (16) matched with the limiting slot (23).
12. oil pumping system according to claim 9, it is characterised in that：It is also set up on the free end of the extension (22)
There are the buckle (24) for supporting the oil pump bracket (2) and the guide groove (25) for being oriented to assembly.
13. a kind of compressor, including the crankshaft with internal oilhole and positioned at the oil sump of the compression motor spindle, feature exists
In：It further include oil pumping system described in one of claim 1-12, the oil pumping system is for sending the oil pump in the oil sump
Into the inside oilhole of the crankshaft.
14. compressor according to claim 13, it is characterised in that：Including insulation frame for stator (3), the oil pumping system
It is fixed on the insulation frame for stator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610841043.1A CN106401915B (en) | 2016-09-22 | 2016-09-22 | A kind of oil pumping system for crankshaft and the compressor with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610841043.1A CN106401915B (en) | 2016-09-22 | 2016-09-22 | A kind of oil pumping system for crankshaft and the compressor with it |
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| CN106401915A CN106401915A (en) | 2017-02-15 |
| CN106401915B true CN106401915B (en) | 2018-11-23 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107503943A (en) * | 2017-09-18 | 2017-12-22 | 珠海格力节能环保制冷技术研究中心有限公司 | The oil pump structure of compressor and there is its compressor |
| CN109882418A (en) * | 2019-04-12 | 2019-06-14 | 珠海凌达压缩机有限公司 | The shaft coupling and compressor and air-conditioner set of raising pump oil effect |
| CN112483363A (en) * | 2020-11-26 | 2021-03-12 | 长虹华意压缩机股份有限公司 | Pump body structure of refrigerator compressor |
| CN114251245A (en) * | 2021-12-22 | 2022-03-29 | 黄石东贝压缩机有限公司 | Piston compressor structure |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT245317Y1 (en) * | 1998-07-01 | 2002-03-20 | Zanussi Elettromecc | PERFECTED HERMETIC MOTOR-COMPRESSOR GROUP |
| JP2005337157A (en) * | 2004-05-28 | 2005-12-08 | Matsushita Electric Ind Co Ltd | Compressor |
| WO2006085163A1 (en) * | 2004-12-27 | 2006-08-17 | Arcelik Anonim Sirketi | A compressor |
| KR20120043448A (en) * | 2010-10-26 | 2012-05-04 | 엘지전자 주식회사 | Hermetic compressor |
| EP2638289B1 (en) * | 2010-11-11 | 2017-06-28 | Arçelik Anonim Sirketi | A hermetic compressor the lubrication performance of which is improved |
| CN103541883B (en) * | 2012-07-17 | 2016-12-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Oil pump of closed type piston compressor and compressor |
| WO2015049192A1 (en) * | 2013-10-02 | 2015-04-09 | Arcelik Anonim Sirketi | A compressor with improved lubrication effectiveness |
| CN206129537U (en) * | 2016-09-22 | 2017-04-26 | 珠海格力节能环保制冷技术研究中心有限公司 | A compressor that is used for oil pumping system of bent axle and has it |
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Effective date of registration: 20181211 Address after: 519070 789 Jinji Xi Road, Qianshan, Zhuhai, Guangdong Co-patentee after: Zhuhai Gree Energy Saving & Refrigerating Technology Resarch Center Co., Ltd. Patentee after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Address before: 519000 science and technology building, 789 Jinji Road, Qianshan, Zhuhai, Guangdong Patentee before: Zhuhai Gree Energy Saving & Refrigerating Technology Resarch Center Co., Ltd. |