CN203052159U - Lubricating oil pump of semi-closed refrigerating compressor - Google Patents

Lubricating oil pump of semi-closed refrigerating compressor Download PDF

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Publication number
CN203052159U
CN203052159U CN 201220588990 CN201220588990U CN203052159U CN 203052159 U CN203052159 U CN 203052159U CN 201220588990 CN201220588990 CN 201220588990 CN 201220588990 U CN201220588990 U CN 201220588990U CN 203052159 U CN203052159 U CN 203052159U
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CN
China
Prior art keywords
oil
pump
pump housing
semi
rotor
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Expired - Fee Related
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CN 201220588990
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Chinese (zh)
Inventor
毛善武
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Hangzhou Qiandaohu Lvhang Pump Industry Co., Ltd.
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毛善武
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Abstract

The utility model relates to the technical field of oil pumps, in particular to a lubricating oil pump of a semi-closed refrigerating compressor. The utility model aims to solve the problems that oil supply pressure is unbalanced, flow difference is large and a pressure-limiting valve design is unreasonable by adopting an oil pump in an engine oil gallery. The lubricating oil pump of the semi-closed refrigerating compressor comprises a pump body and a pump cover matched with one end of the pump body. The other end of the pump body is provided with a pressure-limiting valve. The lubricating oil pump of the semi-closed refrigerating compressor is characterized in that the central part of one end of the pump body is provided with a rotor cavity; an eccentric bushing is arranged in the rotor cavity; an outer rotor is arranged in the eccentric bushing; an inner rotor is arranged in the outer rotor; the inner rotor is matched with one end of a transmission shaft; both ends of an outer diameter of the eccentric bushing are provided with an unload groove along the axial direction; the end face of the eccentric bushing, which faces the side of the pump cover, is provided with a 180-degree annular locating slot along the part of the outer diameter; and a cross-shaped dished elastic sheet is arranged between the eccentric bushing and the pump cover. The lubricating oil pump of the semi-closed refrigerating compressor has the advantages that pressure is stable, service life is prolonged, and maintenance is convenient.

Description

Semi-enclosed refrigerant condenser lubricating oil pump
Technical field
The utility model relates to the oil pump technical field, relates in particular to a kind of semi-enclosed refrigerant condenser lubricant pump.
Background technique
The lubricating oil path of semi-enclosed refrigerant condenser is relatively stricter to the flow of oil, pressure size requirements, and postive direction rotation or opposite spin all must same direction fuel feeding, and flow size, working pressure basically identical.Flow, hypotony do not have lubrication effect, easily cause the burning machine; Flow, overpressure not only do not have good lubricating effect, and the power of consumption of engine too much very easily makes engine temperature promote rapidly on the contrary.On the engine oil gallery: one, pressure mainly are to be controlled by the pressure-limit valve on the oil pump; The 2nd, flow is determined by the size of the end clearance between inner and outer rotors and the pump housing, pump cover; The 3rd, the end clearance between inner and outer rotors and the pump housing, pump cover can compensate automatically by eccentric bushing and cross-spring sheet and realize; The 4th, postive direction rotation or opposite spin can be guaranteed to finish by eccentric bushing by same direction fuel feeding.So the quality of the pressure-limit valve of oil pump, eccentric bushing, inner and outer rotors quality directly influences working pressure, the flow of oil pump, thereby influence the total quality of oil pump.
Pressure-limit valve is the critical component of oil pump, existing oil pump pressure-limit valve is to adopt the plunger type pressure-limit valve basically, and all be to process at the pump housing or pump cover, be that pressure-limit valve and the pump housing or pump cover are same one, this structure has number of drawbacks: the pressure-limit valve difficulty of processing is big, in case pressure-limit valve damage in use will cause whole oil pump to scrap.
Summary of the invention
The objective of the invention is for solve in the engine oil gallery oil pump can only one big, the pressure-limit valve of direction rotation fuel feeding, charge oil pressure imbalance, flow difference design irrational problem, a kind of reasonable in design is provided, can reduce difficulty of processing and the maintenance cost of pressure-limit valve, improve the volumetric efficiency of oil pump, working pressure stability, long service life, the semi-enclosed refrigerant condenser lubricant pump that noise is low.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of semi-enclosed refrigerant condenser lubricant pump, comprise the pump housing, the pump cover that cooperates with the pump housing one end, the other end of the pump housing is provided with pressure-limit valve, it is characterized in that being provided with rotor chamber in the center portion of the pump housing one end, be provided with eccentric bushing in the rotor chamber, be provided with external rotor in the eccentric bushing, be provided with internal rotor in the external rotor, internal rotor cooperates with an end of transmission shaft; Outer diameter two ends at eccentric bushing are provided with compensating groove vertically, and eccentric bushing is provided with the annular positioning groove of 180 degree towards the external diameter position, end face upper edge of pump cover side; Between described eccentric bushing and pump cover, be provided with cross dish shell fragment.
Realize that oil pump postive direction or opposite spin can both same direction fuel feeding, and flow size, working pressure basically identical, finished by eccentric bushing, the eccentric bushing profile is the cylinder bodily form, contain inside and outside rotor in the eccentric opening at middle part, the design of compensating groove and annular positioning groove makes the eccentric bushing can Rotate 180 °, makes the eccentric direction Rotate 180 ° of inside and outside rotor, can both same direction fuel feeding thereby reach positive and negative direction rotation.The automatic compensation in oil pump internal end surface gap, by being arranged on the cross dish shell fragment between eccentric bushing and the pump cover, its pretightening force makes the both ends of the surface of inside and outside rotor under the holding out against of eccentric bushing, one end face and pump housing rotor chamber bottom surface closely cooperate, the other end closely contacts with eccentric bushing rotor chamber bottom surface, thereby eliminate the gap of oil pump internal end surface automatically, the end clearance is always zero.Pressure-limit valve and the pump housing or pump cover separate design have lowered the whole service life of difficulty of processing and the pump housing greatly.
As preferably, described pump housing center line is provided with the oil outlet space with respect to the other end of rotor chamber, and position, oil outlet space is provided with supplementary bearing, and an end of transmission shaft stretches in the endoporus of supplementary bearing one end.One end of transmission shaft is connected with the driving crank of motor.Supplementary bearing supports the driving crank of motor and cooperates with movable crack.
As preferably, described transmission shaft is arranged in the axis hole in the pump housing between rotor chamber and the supplementary bearing, establish lining in the axis hole, establish an oblique oil input channel hole at pump housing supplementary bearing nose end, one end in this oblique oil input channel hole and an end face of the pump housing are penetrating, the other end is communicated with the oil-feed tank of rotor chamber bottom, is the oil-feed road junction.One end of transmission shaft cooperates with internal rotor, stretches into that a end in the other end supplementary bearing endoporus is connected with the driving crank of motor and driven, and lining is fixed in the axis hole as the sliding bearing of transmission shaft.The penetrating end face of oblique oil input channel hole and the pump housing is towards the end face that is provided with the pressure-limit valve direction.
As preferably, described eccentric bushing is by locating stud and pump cover location, and an end of locating stud is fixed on the pump cover.Locating stud is cylindrical pin, during the work of one section of locating stud to annular positioning groove guiding and spacing.
As preferably, the described pump housing radially is provided with radially oil road in the radially external space position of rotor chamber end, lining, one end of described radially oil road goes out to communicate with the rotor chamber bottom, hexagonal was stopped up in radially the other end of oil road was provided with, with to go out oil groove corresponding, be provided with oil-feed tank in the rotor chamber bottom.Assist the machining hole that is added in pump housing surface for making each oil canal, it is totally-enclosed all to adopt obstruction to carry out, each oil duct inner wall smooth of the pump housing, and the position of passing through mutually between the Kong Yukong is equipped with chamfering.
As preferably, describedly be axially arranged with axial oil duct at the hole of pump housing rotor chamber seat end, described axial oil duct one end communicates with oil road radially, and axially the other end of oil duct connects the threeway one-way valve, and threeway one-way valve and the pump housing are by being threaded.The threeway one-way valve is arranged on the pump housing of pump cover one end as a single component.
As preferably, the outside left that is positioned at supplementary bearing in the described pump housing is established an axial oil duct, and this axial oil duct one end communicates with radial direction oil, and pressure-limit valve is assemblied in the port that this axial oil duct is positioned at pump housing surface.Change the plunger seal valve of prior art into the steel ball sealing valve, be about to pressure-limit valve and from the pump housing or pump cover, separate, become individual components, solved the manufacturing difficult point of pressure-limit valve like this, main just to the processing of main oil-hole and spring base hole bottom plane.
As preferably, the internal diameter at described supplementary bearing mid-length position is provided with annular oil groove, annular oil groove is provided with oil outlet, the pump housing axially leads to establishes an oblique oil duct that leads to oil outlet on the described annular oil groove on the oil duct of pressure-limit valve, tiltedly the port of oil duct is oil outlet, and the end that supplementary bearing is positioned at the pump housing is provided with thrust plate.Annular oil groove is as the oil duct of lubricated usefulness, and the normal fortune of protection live axle in the pump housing passes; Thrust plate is to the end face of host driven axle.
As preferably, the oil groove cross section that goes out of described rotor chamber bottom is the smaller part circle, with hexagonal obstruction in the outer end that goes out the radial direction oil that oil groove communicates is provided with, establish a small through hole in described radial direction oil intermediate portion and communicate with oil pressure gap sensor interface.Each oil duct is positioned at the outlet end on pump housing surface, avoids the main build-up member of the pump housing, and the chain-wales that protrudes than pump housing surface is set, with the structural strength that increases outlet end and the difficulty of processing that reduces each endoporus of oil duct.
As preferably, described pump housing rotor chamber end radially is provided with for the hole that the oil pressure gap sensor is installed, and this hole communicates by aperture and with the circular fuel-displaced groove of smaller part.The hole that is used for installation oil pressure gap sensor was sealed with outer-hexagonal plug, copper backing, seal ring before using the oil pressure gap sensor.
The beneficial effects of the utility model are:
1. all same direction fuel feeding of energy of the forward and reverse rotation of oil pump have been guaranteed, flow size, working pressure basically identical.
2. cross dish shell fragment and reversible eccentric bushing are formed an end clearance compensation mechanism, and the end clearance is always zero, and the oil pump volumetric efficiency is improved, and working pressure is stable, and operating noise descends, and prolong working life.
3. pressure-limit valve separates with the oil pump pump housing, pump cover, greatly reduces difficulty of processing and the cost of production of pressure-limit valve, and pressure-limit valve can be changed after damaging at any time, and does not influence the use of whole oil pump, and is easy to maintenance.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the left TV structure schematic representation of the utility model Fig. 1.
Among the figure: 1. the pump housing, 2. in hexagonal stop up 3. one-way valve, 4. fastening screw trip bolt, 5. locating stud, 6. external rotor, 7. internal rotor, 8. lining, 9. transmission shaft, 10. cross dish shell fragment, 11. pump cover, 12. eccentric bushings, 13. seal rings, 14. supplementary bearing, 15. thrust plates, 16. pressure-limit valves, 17. copper washer, 18. O type circles, 19. plugs.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Referring to Fig. 1, Fig. 2, a kind of semi-enclosed refrigerant condenser lubricant pump of present embodiment, the pump housing 1 that comprises cylindrical shape, the pump cover 11 that cooperates by the end face Placement with fastening screw trip bolt 4 with the pump housing one end, add seal ring 13 between pump cover 11 and the pump housing 1, seal ring 13 is the O RunddichtringO, and the other end of the pump housing 1 is equipped with pressure-limit valve 16, establishes through hole in the axial centre of the pump housing 1.
Described through hole is divided into three sections, and middle one section diameter is less, adorns a tubular liner 8 on this section internal diameter, and lining 8 internal diameters and oil pump drive spindle 9 Spielpassung are rotor chamber towards a section of pump cover 11 1 ends, and the other end is supplementary bearing and chamber, oil outlet space.
One end of transmission shaft 9 is adorned an internal rotor 7, external rotor 6 of internal rotor 7 outer suits, and the external diameter of external rotor 6 is located in the eccentric bushing 12, and eccentric bushing 12 is arranged in the pump housing 1 rotor chamber and Spielpassung.Eccentric bushing 12 is cylindrical, and the two ends on an outer diameter of eccentric bushing 12 are provided with compensating groove vertically.Eccentric bushing 12 is provided with the annular positioning groove of 180 degree towards the external diameter position, end face upper edge of pump cover 11 sides, the degree of depth of annular positioning groove is greater than the extrusion section of the locating stud 5 that is mated, eccentric bushing 12 is by locating stud 5 and oil pump end cap 11 location, like this, eccentric bushing 12 becomes the reversible eccentric bushing that can turn round 180 °.Between eccentric bushing 12 and pump cover 11, be provided with a cross dish shell fragment 10.Supplementary bearing 14 is equipped with in the chamber in the oil outlet space, establishes a bearing thrust sheet 15 in the end of supplementary bearing 14, and bearing thrust sheet 15 is embedded in the endoporus of the pump housing 1 end face.
Radial space position at the pump housing 1 neck bush 8 is provided with radially oil road, and radially oil road one end is communicated with the circular fuel-displaced groove of the smaller part of rotor chamber bottom, and hexagonal stopped up 2 in be equipped with the another port.Rotor lumen pore seat end at the pump housing 1 is axially arranged with an axial oil duct, and this axial oil duct one end communicates with oil road radially, and threeway one-way valve 3 is equipped with in the another port.Rotor chamber end at the pump housing 1 also is provided with a radial direction oil, and this radial direction oil one end is communicated with the circular fuel-displaced groove of smaller part, and the intermediate portion is established a small through hole and communicated with oil pressure gap sensor interface.At the pump housing 1 rotor chamber end, radially be provided with for the hole that the oil pressure gap sensor is installed, this hole communicates with radial direction oil, the circular fuel-displaced groove of smaller part by an aperture.This hole is sealed with outer-hexagonal plug 19, copper washer 17, O shape circle 18 before using the oil pressure gap sensor.
Supplementary bearing 14 nose ends at the pump housing 1 are provided with axial oil duct, and this axial oil duct one end communicates with oil road radially, and pressure-limit valve 16 is equipped with in the another port, and pressure-limit valve 16 and the pump housing 1 are by being threaded.On the internal diameter of seats middle part, the pump housing 1 installation supplementary bearing, 14 hole, also be provided with annular oil groove, annular oil groove communicates with three oil outlets that supplementary bearing is provided with, lead between the axial oil duct of pressure-limit valve 16 and annular oil groove at the pump housing 1 and to be provided with an oblique oil channel hole, axial oil duct is communicated with annular oil groove, be oil outlet.
Establish an oblique oil input channel hole again at the pump housing 1 supplementary bearing 14 nose ends, an end in this oblique oil input channel hole and an end face of the pump housing 1 are penetrating, and this end face is the seam large end face of the pump housing, and the other end is communicated with the circular oil-feed tank of the smaller part of rotor chamber bottom, is the oil-feed road junction.
Above-described embodiment is to explanation of the present utility model, is not to restriction of the present utility model, any structure after the simple transformation of the present utility model is all belonged to protection domain of the present utility model.

Claims (10)

1. semi-enclosed refrigerant condenser lubricating oil pump, comprise the pump housing (1), the pump cover (11) that cooperates with the pump housing one end, the other end of the pump housing (1) is provided with pressure-limit valve (16), it is characterized in that being provided with rotor chamber in the center portion of the pump housing (1) one end, be provided with eccentric bushing (12) in the rotor chamber, be provided with external rotor (6) in the eccentric bushing (12), be provided with internal rotor (7) in the external rotor (6), internal rotor (7) cooperates with an end of transmission shaft (9); Outer diameter two ends at eccentric bushing (12) are provided with compensating groove vertically, and eccentric bushing (12) is provided with the annular positioning groove of 180 degree towards the external diameter position, end face upper edge of pump cover (11) side; Between described eccentric bushing (12) and pump cover (11), be provided with cross dish shell fragment (10).
2. semi-enclosed refrigerant condenser lubricating oil pump according to claim 1, it is characterized in that the described pump housing (1) center line is provided with the oil outlet space with respect to the other end of rotor chamber, position, oil outlet space is provided with supplementary bearing (14), and an end of transmission shaft (9) stretches in the endoporus of supplementary bearing (14) one ends.
3. semi-enclosed refrigerant condenser lubricating oil pump according to claim 2, it is characterized in that described transmission shaft (9) is arranged in the axis hole in the pump housing between rotor chamber and the supplementary bearing, establish lining (8) in the axis hole, establish an oblique oil input channel hole at the pump housing (1) supplementary bearing (14) nose end, one end face of one end in this oblique oil input channel hole and the pump housing (1) is penetrating, the other end is communicated with the oil-feed tank of rotor chamber bottom, is the oil-feed road junction.
4. according to claim 1 or 2 or 3 described semi-enclosed refrigerant condenser lubricating oil pumps, it is characterized in that described eccentric bushing (12) by locating stud (5) and pump cover (11) location, an end of locating stud (5) is fixed on the pump cover (11).
5. according to claim 1 or 2 or 3 described semi-enclosed refrigerant condenser lubricating oil pumps, it is characterized in that the described pump housing (1) radially is provided with radially oil road in the radially external space position of rotor chamber end, lining (8), one end of described radially oil road communicates with the oil groove that goes out of rotor chamber bottom, hexagonal was stopped up (2) in radially the other end of oil road was provided with, with to go out oil groove corresponding, be provided with oil-feed tank in the rotor chamber bottom.
6. semi-enclosed refrigerant condenser lubricating oil pump according to claim 5, it is characterized in that being axially arranged with axial oil duct at the hole seat end of the pump housing (1) rotor chamber, described axial oil duct one end communicates with oil road radially, axially the other end of oil duct connects threeway one-way valve (3), and threeway one-way valve (3) and the pump housing (1) are by being threaded.
7. semi-enclosed refrigerant condenser lubricating oil pump according to claim 5, it is characterized in that the outside left that is positioned at supplementary bearing (14) in the described pump housing (1) establishes an axial oil duct, described axial oil duct one end communicates with radial direction oil, and pressure-limit valve (16) is assemblied in the port that this axial oil duct is positioned at pump housing surface.
8. semi-enclosed refrigerant condenser lubricating oil pump according to claim 7, the internal diameter that it is characterized in that supplementary bearing (14) mid-length position is provided with annular oil groove, annular oil groove is provided with oil outlet, the pump housing (1) axially leads to establishes an oblique oil duct that leads to oil outlet on the described annular oil groove on the oil duct of pressure-limit valve (16), tiltedly the port of oil duct is oil outlet, and the end that supplementary bearing (14) is positioned at the pump housing (1) is provided with thrust plate (15).
9. semi-enclosed refrigerant condenser lubricating oil pump according to claim 5, the oil groove cross section that goes out that it is characterized in that described rotor chamber bottom is the smaller part circle, stopping up with hexagonal in the outer end that goes out the radial direction oil that oil groove communicates is provided with, establish a small through hole in described radial direction oil intermediate portion and communicate with oil pressure gap sensor interface.
10. semi-enclosed refrigerant condenser lubricating oil pump according to claim 9 is characterized in that the described pump housing (1) rotor chamber end, radially is provided with for the hole that the oil pressure gap sensor is installed, and this hole communicates by aperture and with the oil groove that goes out of smaller part circle.
CN 201220588990 2012-11-09 2012-11-09 Lubricating oil pump of semi-closed refrigerating compressor Expired - Fee Related CN203052159U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220588990 CN203052159U (en) 2012-11-09 2012-11-09 Lubricating oil pump of semi-closed refrigerating compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220588990 CN203052159U (en) 2012-11-09 2012-11-09 Lubricating oil pump of semi-closed refrigerating compressor

Publications (1)

Publication Number Publication Date
CN203052159U true CN203052159U (en) 2013-07-10

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ID=48735112

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220588990 Expired - Fee Related CN203052159U (en) 2012-11-09 2012-11-09 Lubricating oil pump of semi-closed refrigerating compressor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111486329A (en) * 2020-03-30 2020-08-04 湖南湘衡泵业有限责任公司 Controllable oil pump of environmental protection function emission has

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111486329A (en) * 2020-03-30 2020-08-04 湖南湘衡泵业有限责任公司 Controllable oil pump of environmental protection function emission has

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C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned

Granted publication date: 20130710

Effective date of abandoning: 20140928

C20 Patent right or utility model deemed to be abandoned or is abandoned
AV01 Patent right actively abandoned

Granted publication date: 20130710

Effective date of abandoning: 20140928

TR01 Transfer of patent right

Effective date of registration: 20150330

Address after: Chunan County, Hangzhou City, 311700 island in Zhejiang Province town of Gushan Road No. 299 Building 1 floor 4

Patentee after: Hangzhou Qiandaohu Lvhang Pump Industry Co., Ltd.

Address before: 701, room 1, unit 9, two district, Xintang County, Zhejiang County, Chunan County, Hangzhou, 311700

Patentee before: Mao Shanwu

ASS Succession or assignment of patent right

Owner name: HANGZHOU QIANDAOHU LUHANG PUMP INDUSTRY CO., LTD.

Free format text: FORMER OWNER: MAO SHANWU

Effective date: 20150330

CU03 Correction of utility model patent gazette

Correction item: abandoned patent right voluntarily

Correct: Revoke the patent right

False: Abandonment of patent

Number: 43

Volume: 30

ERR Gazette correction
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130710

Termination date: 20171109

CF01 Termination of patent right due to non-payment of annual fee