CN1236210C - Crank shaft of refrigeration compressor - Google Patents
Crank shaft of refrigeration compressor Download PDFInfo
- Publication number
- CN1236210C CN1236210C CN 01144269 CN01144269A CN1236210C CN 1236210 C CN1236210 C CN 1236210C CN 01144269 CN01144269 CN 01144269 CN 01144269 A CN01144269 A CN 01144269A CN 1236210 C CN1236210 C CN 1236210C
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- China
- Prior art keywords
- oil
- axial region
- bent axle
- refrigerator
- oil groove
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005057 refrigeration Methods 0.000 title claims description 21
- 239000007787 solid Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 146
- 230000000694 effects Effects 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 6
- 230000000630 rising effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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Abstract
The present invention discloses a crankshaft of a refrigerating compressor, which is characterized in that in order to enable refrigerator oil to move upwards by centrifugal force, an oil path of the refrigerator oil is formed along a circumferential surface. One part of the oil path is pressed into a solid cylindrical shaft part, and at one end of the shaft part, the oil path is in off-center with the center of the shaft part and an off-center part communicated with the oil path of the refrigerator oil. At the other end of the shaft part, an oil pump pumps oil from the oil path of the refrigerator oil by centrifugal force when the shaft part rotates. The crankshaft of a refrigerating compressor of the present invention can smoothly supply refrigerator oil and prevent the leakage phenomenon of the refrigerator oil for a refrigerating compressor which can rotate at a low speed and at a high speed at the time of rotating at a low speed.
Description
Technical field
The present invention relates to the bent axle of compressor, especially the bent axle of compressor also can be supplied with the oil supply structure of abundant refrigerator oil when low-speed running.
Background technique
In general, refrigeration compressor is transferred in the device in freezing control such as refrigerator, air-conditioning and is played the working oil of compression through the vaporization heat switchboard, and supplies to the effect of condensing heat exchanger.
Below, the formation of general refrigeration compressor and bent axle thereof, particularly reciprocating movement type compressor and bent axle thereof is described with reference to the accompanying drawings.
At first, Fig. 1 is the sectional view that general refrigeration compressor constitutes; Fig. 2 is the front elevation that the bent axle of general refrigeration compressor constitutes.
As shown in Figure 1, reciprocating movement type compressor is made up of two-part substantially: energising and produce electronic of rotating force and form by the press part of the rotating force compression work oil of electronic portion in the enclosed space 1 that is made of lower casing 2 and upper casing 3.Electronic portion is made of energising and the rotor 5 that produces the fixing part 4 of electromagnetic force and produce rotating force by the electromagnetic force of fixing part.Press part is by being pressed into the rotor 5 and the bent axle 20 of rotation together, rotatablely moving of bent axle converted to the connecting rod 13 of straight reciprocating motion and under the effect of connecting rod 13, constitutes at the piston 12 of the internal compression working oil of cylinder block 11.Because an end of connecting rod 13 is pinned to the eccentric part 22 that forms in the upper end portion of bent axle 20, and the other end is pinned to piston 12, so can convert rotatablely moving of bent axle 20 to straight reciprocating motion.On the one hand, the framework 6 around bent axle 20 top circumferential surfacies supports electronic and press part.Between framework 6 and bent axle 20, have for supporting attached bearing perpendicular to the axle direction loading.In order to prevent the mutual friction of various mechanical parts, put into the refrigerator oil L of appropriate depth in the bottom surface of lower casing 2, and the underpart of bent axle 20 is immersed in the refrigerator oil.Under the action of centrifugal force that refrigerator oil L produces during by bent axle 20 rotation, the oil circuit that forms on the inner and circumferential surface along bent axle supplies to eccentric part 22 and disperses, thereby the friction motion parts of lubricated various utensil portion is also emitted internal heat simultaneously.
As shown in Figure 2, bent axle 20 is made up of following components: in bent axle 20 upper ends and be eccentric in the eccentric part 22 at a center, the equilibrium block 23 that prevents from the lower end of eccentric part 22 and when rotating to shake, be immersed in equilibrium block 23 lower ends refrigerator oil in extract the oil pump 27 of refrigerator oil and the axial region 21 of refrigerator oil rising oil circuit during rotation out.The boring 24 that the refrigerator oil that the inside of axial region 21 is extracted out by the insertion of oil pump 27 moves up, extend to the oilhole 25 of axial region 21 circumferential surfacies and along axial region 21 circumferential surfacies oil groove 26 of 22 from the oilhole to the eccentric part from the end of boring.The internal diameter of boring 24 approximately is 50% of axial region 21 external diameters, and is eccentric in the axle center of axial region.Oil pump 27 is to utilize centrifugal force to extract a kind of centrifugal pump of refrigerator oil out.It is by the cylindric plunger 27a that is inserted in bent axle axial region 21 lower ends and tiltedly be inserted in the plunger, and the propulsion device 27b that forms the rising oil circuit of refrigerator oil constitutes.
When power supply was received electronic, bent axle 20 transfer 5 rotated together, and simultaneously, the oil pump 27 of bent axle lower end is rotation together also.At this moment, refrigerator oil L is under action of centrifugal force, and the propulsion device 27b by oil pump moves up and is extracted into boring 24.Then, refrigerator oil L is along lubricated framework of oil groove 26 or bearings, moves up simultaneously and disperses to the each several part of shell.At this moment, be pumped to boring 24 refrigerator oil gas and will be discharged to the outside by other pore.
In order to reduce the power consumption of CONDENSATE POT product, in compressor electric motor, generally use low speed rotation and high speed rotating parallel pole-change motor and brshless DC motor at present.
But above-mentioned bent axle 20 mainly is to make in order to run up, when low-speed running, and the phenomenon that the fuel feeding that produces refrigerator oil is had some setbacks, promptly the centrifugal force that produces by rotatablely moving of bent axle 20 of refrigerator oil L moves up.When the bent axle low speed rotation, because refrigerator oil can not be in time supplied in sharply reducing of centrifugal force, can be reduced to the greasy property that prevents various parts frictions and outwards disperse the cooling performance of internal heat, this life-span to compressor is fatal.And, the place that the oilhole 25 of bent axle forms is the rotor 5 of electronic portion and the place of bearing or framework 6 handing-over, both are accurate in conjunction with getting again, also can have the tension force space between rotor and the bearing, so supply to the problem also thereupon generation of the refrigerator oil of oilhole 25 because of the leakage of oil of tension force space.
Summary of the invention
Technical problem to be solved by this invention provides a kind of bent axle of refrigeration compressor, for the low-speed running and the parallel refrigeration compressor that runs up, also can supply with refrigerator oil smoothly during low-speed running and prevent the oil leakage phenomenon of refrigerator oil.
In order to address the above problem, the technical solution used in the present invention is: a kind of bent axle of refrigeration compressor, comprise eccentric part, equilibrium block, oil circuit, oil pump, and move for making refrigerator oil lean on centrifugal force to rise, the refrigerator oil oil circuit forms along circumferential surface; A part is pressed into the axial region of the filled circles tubular of rotor and bearing; At an end of axial region, be eccentric in the eccentric part that axial region center and refrigerator oil oil circuit are communicated with; At the other end of axial region, and the oil pump of when axial region rotates, pumping to oil circuit by centrifugal force.
Described refrigerator oil oil circuit is made of following three parts: first oil groove that forms oil circuit from the lower end of axial region to intermediate portion with rotor together; Form second oil groove of the screw type of oil circuit together with bearing to intermediate portion from the other end of above-mentioned axial region; In order to be communicated with above-mentioned first oil groove and second oil groove, at the oilhole of axial region inside middle formation.
Described first oil groove should be the straight line type parallel with axle direction, and the section vertical with axle direction should be trapezoid shaped.
The handing-over of bearing and rotor is at the circumferential surface at above-mentioned oilhole place, so can prevent the oil leakage phenomenon of the refrigerator oil that produced by the tension force space between bearing and the rotor.
Oilhole is parallel or be formed slopely between the bottom surface of the circumferential surface of axial region and oil groove with axle direction, thereby connects first oil groove and second oil groove.
Described oil pump can directly be attached to the lower end of axial region or can be inserted near the internal rotor axial region lower end.
The bent axle of refrigeration compressor of the present invention will produce following effect:
1. according to the present invention, only be formed on because of the refrigerator oil oil circuit on the circumferential surface of axial region, thus when low-speed running, also can guarantee sizable centrifugal force, and the refrigerator oil of abundant amount can be provided to eccentric part.
2. according to the present invention, rotor and bearing handing-over are on the oilhole circumferential surface that is frozen the engine oil passage sealing, so prevent the refrigerator oil oil leakage phenomenon that caused by the tension force space of stating between rotor and the bearing.
Description of drawings
Fig. 1 is the sectional view that the general refrigeration compressor of expression constitutes;
Fig. 2 is the front elevation that expression is made of general crankshaft of cooler compressor shown in Figure 1;
Fig. 3 is the oblique drawing of the bent axle of expression refrigeration compressor of the present invention;
Fig. 4 is the front elevation of a kind of form of bent axle oil supply effect among expression the present invention;
Fig. 5 is the schematic partial sectional view of the another kind of form of expression bent axle oil supply of the present invention effect.
Among the figure, 30. bent axles, 31. axial regions, 32. eccentric parts, 33. equilibrium blocks, 34. first oil grooves, 35. oilholes, 36. second oil grooves, 37a. plunger, 37b. propulsion device.
Embodiment
Further describe below in conjunction with the bent axle of the drawings and specific embodiments refrigeration compressor of the present invention:
Ordinary construction about refrigeration compressor is identical with background material, will omit explanation later on.
As shown in Figure 3, the bent axle 30 of refrigeration compressor of the present invention, the bent axle bottom is pressed into the rotor of motor, and top is pressed into framework or bearing, and bent axle comprises the axial region cylindraceous 31 that rotates with rotor; Be eccentric in the center of axial region in the upper end of axial region, and the eccentric part 32 of the hollow of distribution linking rod outside; The equilibrium block 33 of the vibrations that between axial region 31 and eccentric part 32, take place when reducing rotation; And be immersed in the refrigerator oil of axial region lower end, when rotating, extracts axial region the oil pump of refrigerator oil out.
To form the refrigerator oil oil circuit on the circumferential surface of axial region 31, rising moves to eccentric part 32 to the refrigerator oil that supplies to from oil pump by centrifugal force.At this moment, the refrigerator oil oil circuit is owing to the circumferential surface along axial region 31 forms, so under identical rotational speed, make the centrifugal force maximization, thereby can improve the oil pumping amount, being centrifugal force is directly proportional with distance from rotating center, so the refrigerator oil oil circuit is located at from axial region 31 centers circumferential surface farthest to increase centrifugal force.
For this reason, the refrigerator oil oil circuit is made up of two oil grooves 34,36 that form by certain depth along circumferential surface to the upper end from the lower end of axial region 31 and the oilhole 35 that is communicated with above-mentioned oil groove.At this moment, also can link into an integrated entity oil groove, but oil leakage phenomenon for the refrigerator oil that prevents to cause by the tension force space between rotor and the bearing, should be with the intermediate portion of axial region 31, the place that is the handing-over of rotor and bearing is a benchmark, it is divided into first oil groove 34 and second oil groove 36, and promptly the lower end from axial region 31 will form first oil groove 34 to intermediate portion, and and rotor form the oil circuit of refrigerator oil together.To form second oil groove 36 from the upper end of axial region 31 to intermediate portion, and and bearing form the oil circuit of refrigerator oil together, and form the oilhole 35 that is communicated with first oil groove 34 and second oil groove 36 in the inside of the intermediate portion of axial region 31.
The length direction of first oil groove 34 can be a screw type, also can be straight line type.Because the purpose of the refrigerator oil by first oil groove does not lie in the lubricated of rotor, so, for making distance the shortest, should make and be parallel to axial straight line type.And, be the trapezoid shaped that from the bottom surface to the circumferential surface, broadens gradually perpendicular to the axial section of first oil groove.Such section does not have concrete qualification yet, thus can be quadrangle, triangle or circle, but consider the influence of centrifugal force, big trapezoidal of the area of circumferential surface side preferably.
For making refrigerator oil energy sufficient lubrication bearing when supplying with, the length direction of second oil groove 36 should be made screw type.
For the bent axle of above-mentioned shape, the oil supply process of its refrigerator oil is with as follows:
Embodiment 1
Bent axle as shown in Figure 4 is the form that oil pump directly is attached to the axial region lower end.As shown in Figure 4, oil pump is by the plunger 37a of the hollow cylindrical that is inserted into axial region lower end circumferential surface and tilts to possess in the inside of plunger and the propulsion device 37b that forms refrigerator oil rising oil circuit is constituted, and a kind of centrifugal oil pump of the centrifugal force extraction refrigerator oil that is produced during by axial region 31 rotations.
At first, when power supply passed to electronic rotor, the axial region 31 that is pressed into rotor was along with rotation.At this moment, refrigerator oil rises under the effect of the propulsion device 37b of oil pump by centrifugal force and flow into first oil groove 34 of axial region.Then, refrigerator oil rises by the oil circuit between first oil groove 34 and the rotor and flow into second oil groove 36 through oil-through hole 35.And lubricating bearings when refrigerator oil rises by the oil circuit between second oil groove 36 and the bearing finally rises to eccentric part 32 and the each several part in the shell that disperses, and in the time of lubricated various fricting movement portion internal heat is dispersed and is cooled off.
Play the axial region of above-mentioned effect, owing to form first oil groove 34 of refrigerator oil oil circuit and the circumferential surface that second oil groove 36 is arranged on axial region 31, not only when high speed rotating, and when low speed rotation, also can guarantee sizable centrifugal force, so can supply with sufficient refrigerator oil.And, be pressed into the rotor of axial region 31 and the tension force space between the bearing and sealed, so can prevent the oil leakage phenomenon of refrigerator oil by first oil groove 34 and second oil groove 36.
Embodiment 2
Bent axle shown in Figure 5 is not that oil pump directly is combined in axial region, but is inserted into the form of rotor lower end.
As shown in Figure 5, the plunger 47a of above-mentioned oil pump length in accordance with regulations is inserted into the lower end of rotor 5, and the lower end of plunger 47a and axial region 31 isolates in accordance with regulations at interval.At this moment, plunger 47a and axial region 31 are tangent does not hinder yet.In this situation,, O type ring should be set between plunger 47a and rotor 5 for preventing the leakage of oil of refrigerator oil.
Energising, during electronic rotor, axial region 31 and oil pump rotate together.At this moment, refrigerator oil leans on centrifugal force to rise under the effect of the propulsion device 47b of oil pump and flow into first oil groove 34 of axial region, and the effect of carrying out is described with embodiment 1 afterwards.
This shows, be not only limited to above-mentioned example about the bent axle of refrigeration compressor of the present invention.As long as the oil groove that forms and be located at the assigned position of above-mentioned axial region on by the axial region circumferential surface, and the oilhole that does not open at circumferential surface is when constituting when the refrigerator oil oil circuit, and the distortion of any form does not all hinder.
Claims (5)
1. the bent axle of a refrigeration compressor comprises eccentric part, equilibrium block, oil circuit, oil pump, and the oil circuit of refrigerator oil forms along circumferential surface, and a part is pressed into the axial region (31) of the filled circles tubular of rotor and bearing; Have at an end of axial region and to be eccentric in the eccentric part (32) that the axial region center is communicated with the refrigerator oil oil circuit, the other end at axial region has oil pump (37), it is characterized in that the refrigerator oil oil circuit is by first oil groove (34) that forms oil circuit from the lower end of axial region to intermediate portion with rotor together; Form second oil groove (36) of the screw type of oil circuit together with bearing to intermediate portion from the other end of axial region; Be communicated with first oil groove and second oil groove, the oilhole (35) that forms in the axial region inside middle constitutes, bearing and rotor (5) handing-over is on the circumferential surface at oilhole place, oilhole (35) is parallel or be formed slopely between the bottom surface of the circumferential surface of axial region (31) and oil groove (34,36) with axle direction, connects first oil groove (34) and second oil groove (36).
2. the bent axle of refrigeration compressor according to claim 1 is characterized in that first oil groove (34) is with the parallel straight line type of axle direction.
3. the bent axle of refrigeration compressor according to claim 2 is characterized in that the axial section perpendicular to first oil groove (34) is trapezoidal.
4. the bent axle of refrigeration compressor according to claim 1 is characterized in that oil pump (37) directly is combined in the lower end of axial region.
5. the bent axle of refrigeration compressor according to claim 1 is characterized in that oil pump (37) is inserted into below the internal rotor axial region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144269 CN1236210C (en) | 2001-12-17 | 2001-12-17 | Crank shaft of refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144269 CN1236210C (en) | 2001-12-17 | 2001-12-17 | Crank shaft of refrigeration compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1427154A CN1427154A (en) | 2003-07-02 |
| CN1236210C true CN1236210C (en) | 2006-01-11 |
Family
ID=4677438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01144269 Expired - Fee Related CN1236210C (en) | 2001-12-17 | 2001-12-17 | Crank shaft of refrigeration compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1236210C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005023877A (en) * | 2003-07-04 | 2005-01-27 | Matsushita Electric Ind Co Ltd | Hermetic compressor |
| JP2005069123A (en) * | 2003-08-26 | 2005-03-17 | Matsushita Electric Ind Co Ltd | Hermetic compressor |
| CN102514101A (en) * | 2011-12-23 | 2012-06-27 | 周金生 | Eccentric balance weight structure of stone sawing machine transmission mechanism |
| CN103306975A (en) * | 2013-06-19 | 2013-09-18 | 西安东方康普斯制冷工程有限公司 | Minitype refrigeration compressor |
| CN105697340B (en) * | 2016-04-01 | 2018-01-02 | 加西贝拉压缩机有限公司 | A kind of bent axle for refrigeration compressor |
| CN106246507A (en) * | 2016-08-31 | 2016-12-21 | 安徽美芝制冷设备有限公司 | Crankshaft group and the compressor with it |
| CN107218203A (en) * | 2017-07-21 | 2017-09-29 | 上海宇盛压缩机械有限公司 | A kind of compressor and its piston rod part |
| CN110953140B (en) | 2018-09-26 | 2020-12-08 | 安徽美芝制冷设备有限公司 | Crankshaft assemblies, compressors and refrigeration equipment |
| CN111043145B (en) * | 2019-12-26 | 2021-06-15 | 黄石正达工贸有限公司 | Crankshaft for compressor |
-
2001
- 2001-12-17 CN CN 01144269 patent/CN1236210C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1427154A (en) | 2003-07-02 |
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| CF01 | Termination of patent right due to non-payment of annual fee |