CN103541883B - Oil pump of closed type piston compressor and compressor - Google Patents
Oil pump of closed type piston compressor and compressor Download PDFInfo
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- CN103541883B CN103541883B CN201210246465.6A CN201210246465A CN103541883B CN 103541883 B CN103541883 B CN 103541883B CN 201210246465 A CN201210246465 A CN 201210246465A CN 103541883 B CN103541883 B CN 103541883B
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Abstract
The present invention discloses the oil pump of a kind of closed-type compressor, and including pump block and pump core, it is concentric that described pump block is set in the periphery of described pump core, described pump block and described pump core, and described pump core connects rotor or bent axle, and the outer wall of described pump block is provided with external screw thread；One or more spiral groove it is provided with on the outer wall of described pump core.Further relate to a kind of compressor.Pump core outer wall is designed with at least one spiral groove, one end is fixed on rotor lower end, the other end immerses in oil sump, its periphery is cased with the pump block of a circular pipe fitting, pump block is fixed on motor stator by bracing frame, pump block and pump core keep concentric and have certain interval, pump block outer wall upper end to have a helicitic texture between the two；When low frequency pump oil, the screw thread at pump block outer wall can effectively prevent the oil leakage between pump core and pump block；When high frequency pump oil, the multiple through holes bottom pump block can change flow and the flow direction of oil, and then avoids the excessive problem of pump oil mass.
Description
Technical field
The present invention relates to Compressor Technology field, particularly relate to a kind of oil pump of closed type piston compressor and
Compressor.
Background technology
Closed piston compressor is the core component of the refrigeration plants such as air-conditioner, electric refrigerator and reezer system, its
Done work by the piston in compressor, order about coolant media circulation in compressor, reach the effect of refrigeration, and
Piston compressor many employings centrifugal pump carries out feed lubrication.
The many employings of lubricating arrangement of closed piston compressor in the market centrifugal oil as shown in Figure 1
Pump, is made up of an oil sump, is provided with a centrifugal oil pump bottom compressor movement housing bottom compressor, even
Being connected on rotor or bent axle lower end, and keep with one heart, when compressor operating, driven by motor oil pump is by oil
It is extracted into the position needing lubrication, to meet the long-term Effec-tive Function of compressor.
As shown in Figures 2 and 3, a thin wall type pipe, aperture, upper end is big, aperture, lower end for centrifugal oil pump structure
Little, a piece of spiral type of middle insertion or the oil guide piece of straight, referred to as centrifugal pump, this structure pump oil principle is liquid
Body rises along wall under centrifugal action, and the centrifugal pump of the type can meet fixed frequency air conditioner machine in 50Hz condition
Under use, although can by reduce entrance hole diameter r0, or increase the method such as bent axle and oil pump radius r1
Improve the pumping ability of this centrifugal pump, but the change of its pumping ability or limited, and easily occur at a high speed
The problem that lower fuel feeding is excessive.
Along with the application popularization of frequency conversion equipment, allowing for piston compressor operational speed range and broaden, frequency is low
It is 1200rpm to 20Hz(correspondence rotating speed), when low-frequency operation, the height of centrifugal pump pump oil significantly declines,
Mechanical lubrication problem in compressor highlights, and causes compressor normally to work, if pump oil is too many, then
Waste energy, sump liquid level is low, and injecting oil mass then increases, and therefore in convertible frequency air-conditioner, compressor pump oil is one
The problem that individual comparison is crucial.
The desired speed of above-mentioned centrifugal pump is typically 2500～3000rpm, under the conditions of low speed 1200rpm almost
Cannot pump oil, 4500 turns at a high speed then pump oil mass excessive.
In consideration of it, centrifugal oil pump is improved by some manufacturers, the compressor oil pump of design uses screw pump
Structure, wherein has a pump core, and its periphery design has helicla flute, one end to be connected to bent axle lower end, and one end is immersed
In oil sump, its periphery is cased with a circular pipe fitting, is fixed on motor stator by an arm-piece, circular pipe fitting with
Spiral pump core keep coaxial and between have certain interval, rotate under bent axle is in driven by motor, pump core is also followed
Rotate, under helicla flute ramp effect, make oil rising, and peripheral circular pipe fitting liquid provides a frictional force
Liquid in rotation speed is made to slow down, to improve pump oil mass.But between existing between circular pipe fitting and rotor inner hole wall
Gap, easily reveals.Though low frequency energy fuel feeding, exist between outer pipe and rotor inner wall and reveal, and
Pump oil mass problems of too is there is under high-speed condition.
Also screwing it groove to be arranged on cylindrical pipe fitting, cylindrical pipe fitting is fixed on rotor, and pump core is always
Wall pipe part, it inserts band spiral fluted cylindrical pipe fitting center, bottom by a fixation with steel wire in motor stator
On so that it is do not follow outer tube member and rotate.Motor rotates, and drives cylindrical pipe fitting to rotate, by helicla flute by oil
Portion requiring lubrication on pump.Although the program does not exist leakage, but under the conditions of pump core is non-rotary, carry
Little for favourable frictional force, but under high-speed condition, there is pump oil mass problems of too.
Summary of the invention
For overcoming the deficiencies in the prior art, the present invention provides a kind of reasonable in design, closed pressure of simple in construction
The oil pump of contracting machine, the present invention realizes above-mentioned purpose and be the technical scheme is that
The oil pump of a kind of closed-type compressor, including pump block and pump core, described pump block is set in described pump core
Periphery, described pump block and described pump core are concentric, and described pump core connects rotor or bent axle, described pump block
External screw thread it is provided with on outer wall；
One or more spiral groove it is provided with on the outer wall of described pump core.
More preferably, described external screw thread is triangle thread, rectangular thread, trapezoidal thread or saw-tooth thread.
More preferably, the bottom of described pump block is provided with the ear flange of projection, and described ear flange is provided with
Flange hole.
More preferably, described flange hole is arranged on the side of described ear flange.
More preferably, described pump block is without diapire；
Described ear flange is one-body molded with described pump block, and described ear flange is arranged with described pump block junction
There is arc transition.
More preferably, the bottom of described pump block has been radially arranged diapire, and described diapire is provided with multiple through hole.
More preferably, generally circular in shape, arc, triangle, the ellipse of described through hole or star.
More preferably, also include that curved support frame, described curved support frame are joined with the through hole on described ear flange
Close, be used for fixing described ear flange.
More preferably, the outer wall at the middle part of described pump block is provided with the axisymmetrical of two pump blocks the most described
Lobe.
More preferably, also include that fixture, described fixture are used for fixing two described lobe, stop described
Pump block rotates.
More preferably, the cross section of described groove is rectangle or arc.
More preferably, the outer wall of described pump core is provided with cannelure, and described cannelure is for matching with described pump block
Close.
The present invention also provides for a kind of closed piston compressor, including housing, bent axle, connecting rod, piston and electricity
Machine, also includes the oil pump of any of the above-described technical characteristic.
More preferably, described curved support frame is installed on the stator of described motor.
More preferably, described fixture is installed on the stator of described motor.
The invention has the beneficial effects as follows: pump core uses screw pump structure, and pump core outer wall is designed with at least one spiral shell
The groove of rotation shape, one end is fixed on rotor lower end, and in one end dip lubrication oil sump, its periphery is cased with sleeve-shaped
Pump block, pump block is fixed on motor stator by bracing frame or fixture, pump block and pump core keep concentric and
There are certain interval, pump block outer wall upper end to be provided with external screw thread between the two, rotate under bent axle is in driven by motor,
Pump core also follows rotation, makes oil rising under spiral groove ramp effect；When low frequency pump oil, at pump block
External screw thread on wall can effectively prevent the oil leak between pump core and pump block；When high frequency pump oil,
Numerous through holes bottom pump block can change flow and the flow direction of lubricating oil, and then avoids excessive the asking of pump oil mass
Topic.
Accompanying drawing explanation
Fig. 1 is the schematic diagram after the centrifugal oil pump assembling compressor of prior art；
Fig. 2 is the centrifugal oil pump sectional view of prior art；
Fig. 3 is the centrifugal oil pump shown in Fig. 2 and rotor engagement schematic diagram；
Fig. 4 is the pump with bottom support frame of oil pump of closed type piston compressor one embodiment of the present invention
Set assembling schematic diagram；
Fig. 5 is the pump core sectional view shown in Fig. 4；
Fig. 6 is the pump core schematic perspective view described in Fig. 5；
Fig. 7 is the pump block sectional view shown in Fig. 4；
Fig. 8 is the pump block schematic perspective view shown in Fig. 7；
Fig. 9 is the pump block upward view shown in Fig. 7；
Figure 10 is that the pump block shown in Fig. 7 coordinates sectional view with the pump core shown in Fig. 5；
Figure 11 is the pump block axonometric chart without diapire；
Figure 12 is the pump block upward view shown in Figure 11；
Figure 13 is the pump block assembling of the band lobe of oil pump of closed type piston compressor one embodiment of the present invention
Schematic diagram；
Figure 14 is the pump block sectional view shown in Figure 13；
Figure 15 is the pump block upward view shown in Figure 14；
Figure 16 is the pump block schematic perspective view shown in Figure 14；
Wherein,
1 pump core；11 grooves；12 cannelures；2 pump blocks；21 external screw threads；22 through holes；
23 ear flanges；24 flange hole；25 lobe；3 bracing frames；4 rotors；5 stators；
6 housings；7 bent axles；8 cylinder end pieces；9 fixed mounts.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, oil pump and the compression as a example by Air-tight piston formula refrigeration compressor, to the closed-type compressor of the present invention
Machine is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain this
Bright, do not limit the oil pump of closed-type compressor of the present invention for refrigeration compressor.
Air-tight piston formula compressor includes housing, bent axle, connecting rod, piston, motor and oil pump.
With reference to Fig. 4 to Figure 10, the oil pump of closed-type compressor includes pump core 1 and pump block 2, pump core 1 and pump
Set 2 is sleeve-shaped, and the inwall of pump core 1 is cylindrical, pump core 1 is cut the internal diameter of part more than its lower section
The internal diameter of part, pump core 1 is cut part its lower section intersection partly is provided with a torus, annulus
The outer circumferential side cutting part in the inner circumferential side of the upper end of body and pump core 1 is tightly connected, it is preferred that torus with
Cutting part in pump core 1 is an entirety, forms one between described torus inwall and lower section of part of pump core 1
Cannelure 12, is positioned at the outer wall of pump core 1, and the outer wall of lower section of part of pump core 1 is provided with one or many
The spiral groove of bar 11, the cross section of groove 11 is rectangle or arc.
The inwall of pump block 2 is cylindrical, and its outer wall was also cylindrical before processing screw thread 21, pump block 2
Upper end outer wall on be provided with external screw thread 21, external screw thread 21 is triangle thread, rectangular thread, ladder
Shape screw thread or saw-tooth thread, pump block 2 arranges length and the annular in pump core 1 in external screw thread 21 region
The degree of depth of groove 12 is identical or close.
Being radially arranged diapire bottom pump block 2, described diapire is provided with multiple through hole 22, through hole 22 is uniform
It is distributed in all sides of diapire, generally circular in shape, arc, triangle, the ellipse of through hole 22 or star.
The ear flange 23 of a projection, the two ends of ear flange 23 and pump block 2 sidewall it is provided with bottom pump block 2
Connect, ear flange 23 and the plane perpendicular of pump block 2, ear flange 23 be provided with flange hole 24,
Flange hole 24 is positioned at the middle part of the side of ear flange 23, the axial and axle of pump block 2 of flange hole 24
To perpendicular.
After oil pump assembling, pump core 1 is connected and fixed on rotor 4 or bent axle 7, protects with rotor 4 or bent axle 7
Holding coaxial, pump block 2 is surrounded on outside pump core 1, and concentric with pump core 1, and external screw thread 21 inserts pump core 1
In cannelure 12, there is certain interval between spiral part and the inwall of pump block 2 of pump core 1, pump block simultaneously
There is also certain interval between outer wall and the inwall of cannelure 12 of 2, the lower end of pump core 1 and pump block 2 is respectively
Immerse in the lubricating oil bath determined by housing 6.
Pump block 2 is supported by the bracing frame 3 of arc, bracing frame 3 and the flange hole 24 on ear flange 23
Matching, bracing frame 3 is through described flange hole 24, and bracing frame 3 is fixed on stator 5, so that pump
Set 2 not with pump core 1 synchronous rotary, but pump block 2 can be made movable in little scope.
When rotor 4 rotates, pump core 1 is followed rotor 4 and is rotated, and lubricating oil is oblique at the groove 11 of screw type
Rotor and the place of bent axle needs lubrication is risen under the effect in face.
The diapire of pump block 2 is provided with many through holes, and when can limit high frequency, pump oil too much problem, can control simultaneously
System enters the flow direction of oil in oil pump, beneficially pump oil；Due between outer wall and the inwall of cannelure 12 of pump block 2
There is certain interval, so when pump core rotation makes oil rise, part oil meeting leaks, therefore between this gap
Pump block 2 upper end is designed with helicitic texture, and when pump core 1 rotates, this screw thread will reduce the leakage of oil.
More preferably, as a kind of embodiment, as is illustrated by figs. 11 and 12, have not bottom pump block 2
The ring section being interrupted, i.e. without diapire, bottom is open-minded, does not has multi-through hole structure；
For making to be connected firmly and smooth between ear flange 23 and pump block 2, ear flange 23 and pump
Overlap 2 one-body molded, and ear flange 23 is provided with arc transition with pump block 2 junction.
More preferably, as another kind of embodiment, it is with the difference of above-described embodiment: pump block 2
The lobe that two pump block 2 centrages the most described are symmetrical it is provided with on the outer wall at middle part.The support side of pump block 2
Formula no longer uses the bracing frame of arc, but uses fixture at the middle part of pump block 2, the bottom of pump block 2 also without
Ear flange need to be set.
As shown in Figure 13 to Figure 16, the outer wall at the middle part of pump block 2 is provided with two pump block axles the most described
The lobe 25 that line is symmetrical, lobe 25 coordinates with fixture 9, and fixture 9 is installed on stator 5, uses
In supporting pump block 2, prevention pump block 2 is with pump core 1 synchronous rotary simultaneously, but does not fix the position of pump block 2,
Allow pump block 2 movable in little scope.The diapire of pump block 2 can be provided with multiple equally distributed through hole 22,
Or without diapire bottom pump block 2, i.e. there is no multi-through hole structure.
Without ear flange bottom pump block, that can be designed by oil pump is longer, thus reduces injection flow, reaches fall
The purpose of low cost.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
For those of ordinary skill, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement,
These broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with claims
It is as the criterion.
Claims (11)
1. an oil pump for closed-type compressor, including pump block and pump core, it is concentric that described pump block is set in the periphery of described pump core, described pump block and described pump core, and described pump core connects rotor or bent axle, it is characterised in that:
Being provided with external screw thread on the outer wall of described pump block, described external screw thread is triangle thread, rectangular thread, trapezoidal thread or saw-tooth thread；
One or more spiral groove it is provided with on the outer wall of described pump core;
The inwall of described pump core is cylindrical, the internal diameter of upper section part of described pump core is more than the internal diameter of lower section of part of described pump core, upper section part of described pump core and described pump core the intersection of lower section of part be provided with a torus, the outer circumferential side of upper section part of the inner circumferential side of described toric upper end and described pump core is tightly connected, a cannelure is formed between described toric inwall and lower section of part of described pump core, described cannelure is positioned at the outer wall of described pump core, and described cannelure is for matching with described pump block；
The bottom of described pump block has been radially arranged diapire, and described diapire is provided with multiple through hole, generally circular in shape, arc, triangle, the ellipse of described through hole or star.
The oil pump of closed-type compressor the most according to claim 1, it is characterised in that:
The bottom of described pump block is provided with the ear flange of projection, and described ear flange is provided with flange hole.
The oil pump of closed-type compressor the most according to claim 2, it is characterised in that:
Described flange hole is arranged on the side of described ear flange.
The oil pump of closed-type compressor the most according to claim 2, it is characterised in that:
Described pump block is without diapire；
Described ear flange is one-body molded with described pump block, and described ear flange and described pump block junction are provided with arc transition.
5. according to the oil pump of the closed-type compressor described in any one of claim 2 to 4, it is characterised in that:
Also include that curved support frame, described curved support frame coordinate with the through hole on described ear flange, be used for fixing described ear flange.
The oil pump of closed-type compressor the most according to claim 1, it is characterised in that:
The lobe of the axisymmetrical of two pump blocks the most described it is provided with on the outer wall at the middle part of described pump block.
The oil pump of closed-type compressor the most according to claim 6, it is characterised in that:
Also include that fixture, described fixture are used for fixing two described lobe, stop described pump block to rotate.
The oil pump of closed-type compressor the most according to claim 1, it is characterised in that:
The cross section of described groove is rectangle or arc.
9. a closed piston compressor, including housing, bent axle, connecting rod, piston and motor, it is characterised in that:
Also include the oil pump described in any one of claim 1 to 8.
10. a closed piston compressor, including housing, bent axle, connecting rod, piston and motor, it is characterised in that:
Also include the oil pump described in claim 5；
Described curved support frame is installed on the stator of described motor.
11. 1 kinds of closed piston compressors, including housing, bent axle, connecting rod, piston and motor, it is characterised in that:
Also include the oil pump described in claim 7；
Described fixture is installed on the stator of described motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210246465.6A CN103541883B (en) | 2012-07-17 | 2012-07-17 | Oil pump of closed type piston compressor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210246465.6A CN103541883B (en) | 2012-07-17 | 2012-07-17 | Oil pump of closed type piston compressor and compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103541883A CN103541883A (en) | 2014-01-29 |
| CN103541883B true CN103541883B (en) | 2016-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210246465.6A Active CN103541883B (en) | 2012-07-17 | 2012-07-17 | Oil pump of closed type piston compressor and compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725307A (en) * | 2017-10-11 | 2018-02-23 | 黄石东贝电器股份有限公司 | Oil pump structure and compressor |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089646B (en) * | 2016-08-09 | 2018-02-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Oil-control structure and frequency conversion piston compressor |
| CN106401915B (en) * | 2016-09-22 | 2018-11-23 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of oil pumping system for crankshaft and the compressor with it |
| CN106870328B (en) * | 2017-03-30 | 2018-08-21 | 浙江迪贝电气股份有限公司 | The fixation holding structure of inverter compressor motor spiral oil pumping device oil suction core pipe |
| CN109322813B (en) * | 2018-12-11 | 2024-05-24 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and refrigerating device with same |
| CN114856972B (en) * | 2022-06-01 | 2023-04-11 | 珠海格力电器股份有限公司 | A kind of compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR9201761A (en) * | 1992-05-04 | 1993-11-09 | Brasil Compressores Sa | OIL PUMP FOR HERMETIC VARIABLE SPEED COMPRESSOR |
| IT238840Y1 (en) * | 1995-02-23 | 2000-11-15 | Zanussi Elettromecc | HERMETIC ALTERNATIVE COMPRESSOR WITH PERFECTED DILUBRIFICATION SYSTEM |
| JP2005180367A (en) * | 2003-12-22 | 2005-07-07 | Matsushita Electric Ind Co Ltd | Compressor |
| JP2005337157A (en) * | 2004-05-28 | 2005-12-08 | Matsushita Electric Ind Co Ltd | Compressor |
| CN201206563Y (en) * | 2008-04-09 | 2009-03-11 | 南京蓝深制泵集团股份有限公司 | Sealing arrangement for submersible pump |
| BRPI0804302B1 (en) * | 2008-10-07 | 2020-09-15 | Embraco Indústria De Compressores E Soluções Em Refrigeração Ltda | OIL PUMP ASSEMBLY ARRANGEMENT IN A COOLING COMPRESSOR |
| CN101943156B (en) * | 2010-09-27 | 2013-05-01 | 加西贝拉压缩机有限公司 | Pump oil structure applied to full-closed refrigeration compressor |
| CN202833037U (en) * | 2012-07-17 | 2013-03-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Oil pump of closed compressor and closed piston compressor |
-
2012
- 2012-07-17 CN CN201210246465.6A patent/CN103541883B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107725307A (en) * | 2017-10-11 | 2018-02-23 | 黄石东贝电器股份有限公司 | Oil pump structure and compressor |
| CN107725307B (en) * | 2017-10-11 | 2019-04-26 | 黄石东贝电器股份有限公司 | Oil pump structure and compressor |
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| Publication number | Publication date |
|---|---|
| CN103541883A (en) | 2014-01-29 |
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