CN201391437Y - Lubricant pump of semi-enclosed refrigerating compressor - Google Patents
Lubricant pump of semi-enclosed refrigerating compressor Download PDFInfo
- Publication number
- CN201391437Y CN201391437Y CN200920302532U CN200920302532U CN201391437Y CN 201391437 Y CN201391437 Y CN 201391437Y CN 200920302532 U CN200920302532 U CN 200920302532U CN 200920302532 U CN200920302532 U CN 200920302532U CN 201391437 Y CN201391437 Y CN 201391437Y
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- oil
- pump
- pump housing
- pressure
- eccentric bushing
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Abstract
The utility model relates to the technical field of oil pumps, in particular to a lubricant pump of a semi-enclosed refrigerating compressor, wherein hypocycloid inner and outer rotors, as well as a pressure-limiting valve, are separated from a pump body or a pump cover. The lubricant pump includes the pump body, the pressure-limiting valve, an oil pump end cover and an eccentric bushing, and is characterized in that the eccentric bushing is a reversible type eccentric bushing which can rotate for 180 degrees, a crisscross dished elastic sheet is arranged between the eccentric bushing and the oil pump end cover and forms an end surface clearance automatic-compensation mechanism with the reversible type eccentric bushing, and the pressure-limiting valve is an independent part linked with the pump body into a whole. The oil pump can rotate in forward direction or reverse direction, and supply oil in the same direction; the flow rates and the work pressures keep in exact accordance; and the difficulty in processing manufacture and the maintenance cost of the pressure-limiting valve are reduced.
Description
Technical field
The utility model relates to the oil pump technical field, relates in particular to a kind of hypocycloid inner and outer rotors, and the semi-enclosed refrigerant condenser lubricant pump separated from the pump housing or pump cover of pressure-limit valve.
Background technique
The lubricating oil path of motor, semiclosed refrigerant condenser requires relatively strictness to the pressure of oil, and hypotony does not have lubrication effect, very easily causes the burning machine; Overpressure does not only have good lubricating effect, on the contrary the power of consumption of engine too much.Pressure on the engine oil gallery mainly is to be controlled by the pressure-limit valve on the oil pump.So the quality of oil pump pressure-limit valve quality directly influences the working pressure of oil pump, and directly influence the total quality of oil pump.
Pressure-limit valve is the critical component of oil pump, and the major part parts of pressure-limit valve have: valve body, spool, spring, spring seat.The key technical indexes of pressure-limit valve has: reveal pressure, working pressure and cracking pressure.Wherein, the leakage problem of pressure-limit valve is the most scabrous difficult problem of pressure-limit valve.Prior art is not also fundamentally captured this technical barrier at present, the existing oil pump pressure-limit valve overwhelming majority adopts the plunger type pressure-limit valve, and all be on the pump housing or pump cover, to process, be the same one of the pressure-limit valve and the pump housing or pump cover, such structure has three big defectives: the one, and the pressure-limit valve difficulty of processing is big; The 2nd, in case pressure-limit valve damage in use will cause whole oil pump to scrap; The 3rd, in the oil pump course of working in case since defective whole the pump housing or the pump cover of will causing of pressure-limit valve processing scrap.
The key that solves an above difficult problem and defective is: change the plunger seal valve into the steel ball sealing valve; Pressure-limit valve is separated from the pump housing or pump cover, become individual components; The processing technology of pressure-limit valve main oil-hole and spring base hole platform.
Summary of the invention
The purpose of this utility model is the problem that exists for oil pump in the lubricating oil path that solves motors such as automobile in the background technique, motorcycle, semiclosed refrigerant condenser, provide a kind of rational in infrastructure, the oil pump pressure-limit valve separates with the pump housing, the plunger seal valve must change the hypocycloid inner and outer rotors of steel ball sealing valve into, semi-enclosed refrigerant condenser lubricant pump.
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, pump cover, inner and outer rotors, oil pump main shaft, pressure-limit valve, oil pump end cap, eccentric bushing, it is characterized in that described eccentric bushing is the reversible eccentric bushing of rotatable 180 degree, between eccentric bushing and oil pump end cap, be provided with cross dish spring sheet, form an end clearance compensation mechanism by cross dish spring sheet and reversible eccentric bushing, described pressure-limit valve is independent parts, is connected as one with the pump housing.Oil pump not only postive direction rotation or opposite spin all can same direction fuel feeding, and flow size, working pressure are in full accord, and has reduced the manufacturing difficulty and the maintenance cost of " pressure-limit valve ".
As preferably, the described pump housing or be cylindrical body, the oil pump end cap is arranged on the side of its cylinder axis to position of center line, is provided with supplementary bearing in the hole of opposite side.The pump housing generally adopts foundry goods or forge piece.
As preferably, the pump housing centre bit of described oil pump end cap one side installs a hole seat, it is rotor chamber, eccentric bushing is arranged in this hole seat, it between the mounting hole of hole seat and supplementary bearing one side the axis hole that pump housing axial centre position is provided with concentric, establish a little lining in the axis hole, the oil pump main shaft is housed in the little lining.
As preferably, described oil pump main shaft is put at the seat, hole of the pump housing of oil pump end cap one side and is connected an internal rotor, and an external rotor is established in the outer ring of internal rotor, and external rotor outer ring portion is eccentric bushing.After the oil pump work, the relative pump housing of eccentric bushing maintains static.
As preferably, described eccentric bushing is by straight pin and oil pump end cap location, and the oil pump end cap and the pump housing connect as one by screw.
As preferably, the described pump housing radially is provided with into and out of oil duct in the radial space position of rotor chamber end, little lining, should into and out of oil duct respectively with advance axial trough and go out oil groove and communicate, this oil road one port radially of the pump housing is provided with unidirectional three-way valve, the pump housing radially the oil input channel port be provided with obstruction.The crescent shape of the radially oil road here and rotor chamber bottom goes out oil groove and is communicated with, and with the pump housing on the supplementary bearing hole and the axial oil road of transmission axis hole parallel portion position communicate; Radially also establish an oil input channel in another place at the pump housing little lining radially, this oil duct communicates with the crescent shape oil-feed tank of rotor chamber bottom equally, and communicate with the pump housing another axial fuel inlet road that parallel position with transmission shaft is provided with in the supplementary bearing hole, establish an obstruction in the external port of this oil duct.
As preferably, the described pump housing radially oil input channel is provided with block part and axially establishes a filler opening at its pump housing, and filler opening is towards a side that is provided with the supplementary bearing pump housing.
As preferably, the described pump housing radially oil road is being provided with a section of unidirectional three-way valve, its pump housing axially and towards the same direction of filler opening establish an oil road, adorn a pressure-limit valve at the port of this oil road, pressure-limit valve is provided with oil pressure sensing interface silently.Pressure-limit valve, oil pressure sensing interface keep sealing silently and between the pump housing.
As preferably, described supplementary bearing middle part internal diameter is provided with annular oil groove, and oil groove is provided with oilhole, and the pump housing axially leads to establishes the oil duct that leads to the oilhole on this annular oil groove, i.e. an oil outlet on the oil duct of pressure-limit valve.
As preferably, an end of the described supplementary bearing pump housing is established a thrust bearing, and thrust bearing connects with the pump housing by the elasticity pin
Actual benefit of the present invention is:
1, adopt reversible eccentric bushing (Rotate 180 °) to make rotation of oil pump postive direction or the opposite spin all can same direction fuel feeding, and flow size, working pressure be in full accord.
2, adopt cross dish spring sheet and reversible eccentric bushing to form an end clearance compensation mechanism, the internal end surface gap of oil pump is compensated automatically, promptly the end clearance is always zero, makes the quality of oil pump and every technical order reach designing requirement.Wherein the volumetric efficiency of oil pump is improved; Working pressure stability is improved, and drops to ± 0.01Mpa from ± 0.05Mpa as working pressure fluctuation; The operating noise of oil pump drops to 50dB from original 75dB; Obtain the working life of oil pump prolonging.
3, adopted pressure-limit valve to separate, greatly reduced the manufacturing difficulty and the manufacturing cost of pressure-limit valve with the oil pump pump housing, pump cover; Pressure-limit valve can be changed after damaging at any time, and does not influence the use of whole oil pump, brings convenience to maintenance.
Therefore, the utility model is a kind of reasonable in design, and the oil pump pressure-limit valve separates with the pump housing, makes all same direction fuel feeding of energy of the forward and reverse rotation of oil pump, has reduced the difficulty of processing of pressure-limit valve and the semi-enclosed refrigerant condenser lubricant pump of maintenance cost.
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. oil pump end cap, 3. eccentric bushing, 4. straight pin, 5. little lining, 6. oil pump main shaft, 7. internal rotor, 8. external rotor, 9. screw, 10. seal ring, 11, obstruction, 12. unidirectional three-way valves, 13. pressure-limit valves, 14. supplementary bearing, 15. thrust bearing, 16. elasticity pin, 17. oil pressure and sensor interface are silently, 18. crosses dish spring sheet.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Referring to Fig. 1 and Fig. 2, present embodiment comprises the pump housing 1, pressure-limit valve 13, oil pump end cap 2, eccentric bushing 3, axial centre at the pump housing 1 of cylindrical shape is established the hole, its hole is divided into three parts, middle a part of diameter is less, adorn a little lining 5 on the internal diameter, little lining 5 internal diameters and oil pump main shaft 6 Spielpassung, one end of oil pump main shaft 6 is adorned an internal rotor 7, internal rotor 7 outer ring suits one external rotor 8, an eccentric bushing 3 is adorned in external rotor 8 external diameter orientation, and eccentric bushing 3 is back the reversible eccentric bushing of turnback, and the external diameter of eccentric bushing 3 cooperates with the hole seat of the end that the axial centre of the pump housing 1 is provided with, between eccentric bushing 3 and oil pump end cap 2, if cross dish spring sheet 18, the outer end of cross dish spring sheet 18 is oil pump end caps 2, and the joint is provided with anti-leak O type sealing 10 between the oil pump end cap 2 and the pump housing.
Eccentric bushing 3 is by straight pin 4 and oil pump end cap 2 location, and oil pump end cap 2 connects as one by four screws 9 with the pump housing.
An oil road is established in the radial space appropriate location of the little lining of radially locating at the pump housing 15, this oil duct goes out oil groove with the crescent shape of rotor bottom and communicates, and communicate with near axial oil road that the pump housing 1 is provided with supplementary bearing 14, the pump housing 1 this oil road one port radially is provided with unidirectional three-way valve 12.
Establish an oil input channel at the pump housing 1 little lining 5 another places radially equally, this oil duct of two also can be on same straight line, this oil input channel communicates with the crescent shape oil-feed tank of rotor bottom equally, and communicates with another axial fuel inlet road in the pump housing 1, and hexagonal stopped up 11 in the external port of this oil duct was provided with.The pump housing 1 radial direction oil is being provided with obstruction 11 these end positions and is axially establishing a filler opening at its pump housing, and filler opening is towards the pump housing one side that does not have oil pump end cap 2.
As mentioned above, at the pump housing 1 radially in the oil road, be provided with this section of unidirectional three-way valve 12, its pump housing axially and towards the same direction of filler opening establish an oil road, adorn a pressure-limit valve 13 at the port of this oil duct, pressure-limit valve 13 is connected with pump housing oil road internal thread, is provided with O RunddichtringO 10, oil road is adorned an oil pressure gap sensor interface silently 17 on along separate routes, and the place establishes a copper washer with pump housing housing.
The other end at the oil pump main shaft 6 of the pump housing 1 central position is a supplementary bearing 14, supplementary bearing 14 middle part internal diameters are provided with annular oil groove, annular oil groove is provided with oil through, axially leads to the oil duct that the oil-hole location on this annular oil groove is led in processing one on the oil duct of pressure-limit valve 13, i.e. oil outlet at the pump housing 1.One end of supplementary bearing 14 pump housings is established a thrust bearing 15, and thrust bearing 15 is connected as one by the elasticity pin 16 and the pump housing 1.
The foregoing description is to explanation of the present utility model, is not to qualification of the present utility model, any structure after the utility model simple transformation is all belonged to protection domain of the present utility model.
Claims (10)
1. semi-enclosed refrigerant condenser lubricant pump, comprise the pump housing, pump cover, inner and outer rotors, oil pump main shaft, pressure-limit valve, oil pump end cap, eccentric bushing, it is characterized in that the reversible eccentric bushing of described eccentric bushing (3) for rotatable 180 degree, between eccentric bushing (3) and oil pump end cap (2), be provided with cross dish spring sheet (18), form an end clearance compensation mechanism by cross dish spring sheet (18) and reversible eccentric bushing, described pressure-limit valve (13) is independent parts, is connected as one with the pump housing (1).
2. a kind of semi-enclosed refrigerant condenser lubricant pump according to claim 1, it is characterized in that the described pump housing (1) or be cylindrical body, oil pump end cap (2) is arranged on the side of its cylinder axis to position of center line, is provided with supplementary bearing (14) in the hole of opposite side.
3. a kind of semi-enclosed refrigerant condenser lubricant pump according to claim 1 and 2, the pump housing (1) centre bit that it is characterized in that described oil pump end cap (2) one sides installs a hole seat, it is rotor chamber, eccentric bushing (3) is arranged in this hole seat, it between the mounting hole of hole seat and supplementary bearing (14) one sides the axis hole that pump housing axial centre position is provided with concentric, establish a little lining (5) in the axis hole, oil pump main shaft (6) is housed in the little lining (5).
4. a kind of semi-enclosed refrigerant condenser lubricant pump according to claim 3, it is characterized in that described oil pump main shaft (6) is put at the seat, hole of the pump housing (1) of oil pump end cap (2) one sides connects an internal rotor (7), an external rotor (8) is established in the outer ring of internal rotor (7), and external rotor (8) outer ring portion is eccentric bushing (3).
5. according to claim 1 or 2 or 4 described a kind of semi-enclosed refrigerant condenser lubricant pumps, it is characterized in that described eccentric bushing (3) by straight pin (4) and oil pump end cap (2) location, oil pump end cap (2) connects as one by screw (9) with the pump housing.
6. according to claim 1 or 4 described interior a kind of semi-enclosed refrigerant condenser lubricant pumps, it is characterized in that the described pump housing (1) radially is provided with into and out of oil duct in the radial space position of rotor chamber end, little lining (5), should into and out of oil duct respectively with advance axial trough and go out oil groove and communicate, this oil road one port radially of the pump housing (1) is provided with unidirectional three-way valve (12), the pump housing (1) radially the oil input channel port be provided with obstruction (11).
7. a kind of semi-enclosed refrigerant condenser lubricant pump according to claim 6, it is characterized in that the described pump housing (1) radially oil input channel be provided with obstruction (11) position and axially establish a filler opening at its pump housing, filler opening is towards a side that is provided with supplementary bearing (14) pump housing.
8. a kind of semi-enclosed refrigerant condenser lubricant pump according to claim 6, it is characterized in that the described pump housing (1) radially oil road be provided with a section of unidirectional three-way valve (12), its pump housing axially and towards the same direction of filler opening establish an oil road, adorn a pressure-limit valve (13) at the port of this oil road, pressure-limit valve (13) is provided with oil pressure device sensor interface silently (17).
9. according to claim 1 or 7 described a kind of semi-enclosed refrigerant condenser lubricant pumps, it is characterized in that described supplementary bearing (14) middle part internal diameter is provided with annular oil groove, annular oil groove is provided with oilhole, the pump housing (1) axially leads to establishes the oil duct that leads to the oilhole on this annular oil groove, i.e. an oil outlet on the oil duct of pressure-limit valve (13).
10. according to claim 1 or 2 or 7 described a kind of semi-enclosed refrigerant condenser lubricant pumps, it is characterized in that an end of described supplementary bearing (14) pump housing is established a thrust bearing (15), thrust bearing (15) connects with the pump housing (1) by elasticity pin (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920302532U CN201391437Y (en) | 2009-04-24 | 2009-04-24 | Lubricant pump of semi-enclosed refrigerating compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920302532U CN201391437Y (en) | 2009-04-24 | 2009-04-24 | Lubricant pump of semi-enclosed refrigerating compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201391437Y true CN201391437Y (en) | 2010-01-27 |
Family
ID=41598264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920302532U Expired - Fee Related CN201391437Y (en) | 2009-04-24 | 2009-04-24 | Lubricant pump of semi-enclosed refrigerating compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201391437Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192142A (en) * | 2011-06-07 | 2011-09-21 | 张意立 | Annular air bag compensation sealing four-space rotor pump |
| CN102661480A (en) * | 2012-05-04 | 2012-09-12 | 浙江平柴泵业有限公司 | Novel two-way intelligent oil pump |
| CN114523416A (en) * | 2022-03-14 | 2022-05-24 | 浙江杰克智能装备有限公司 | Dynamic pressure main shaft assembly |
-
2009
- 2009-04-24 CN CN200920302532U patent/CN201391437Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192142A (en) * | 2011-06-07 | 2011-09-21 | 张意立 | Annular air bag compensation sealing four-space rotor pump |
| CN102661480A (en) * | 2012-05-04 | 2012-09-12 | 浙江平柴泵业有限公司 | Novel two-way intelligent oil pump |
| CN102661480B (en) * | 2012-05-04 | 2015-09-23 | 浙江平柴泵业有限公司 | Novel two-way intelligent oil pump |
| CN114523416A (en) * | 2022-03-14 | 2022-05-24 | 浙江杰克智能装备有限公司 | Dynamic pressure main shaft assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100127 Termination date: 20110424 |