CN110195695A - A kind of crankshaft and compressor - Google Patents
A kind of crankshaft and compressor Download PDFInfo
- Publication number
- CN110195695A CN110195695A CN201910444808.1A CN201910444808A CN110195695A CN 110195695 A CN110195695 A CN 110195695A CN 201910444808 A CN201910444808 A CN 201910444808A CN 110195695 A CN110195695 A CN 110195695A
- Authority
- CN
- China
- Prior art keywords
- oil
- main shaft
- fan leaf
- shaft part
- storage tank
- Prior art date
- 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.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0223—Lubrication characterised by the compressor type
- F04B39/023—Hermetic compressors
- F04B39/0238—Hermetic compressors with oil distribution channels
- F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0284—Constructional details, e.g. reservoirs in the casing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/14—Features relating to lubrication
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a kind of crankshaft and compressors, are used for compressor field, and crankshaft includes main shaft part, are equipped with main shaft part oil circuit；Fan leaf is connect with the main shaft part, and the fan leaf is equipped with oil-bearing structure and balance portion；Eccentric part deviates the main shaft part axis and connect with the fan leaf, and the eccentric part is equipped with eccentric part oil circuit；Wherein, the oil-bearing structure and the main shaft part oil circuit and eccentric part oil communication form fuel feeding access.Compressor includes above-mentioned crankshaft, and fan leaf is equipped with oil-bearing structure, and lubricating oil can be stored in oil-bearing structure, and when compressor operation, the lubricating oil in oil-bearing structure quickly flows under the action of inertia force, and directly lubrication crankshaft eccentric portion friction is secondary.The technical solution, which has, rubs the secondary ability for carrying out fast lubricant to crankshaft eccentric portion in compressor initial operation stage, greatly improves the secondary lubrication state at compressor start initial stage of crankshaft eccentric portion friction, extends compressor service life.
Description
Technical field
The present invention is used for compressor field, more particularly to a kind of crankshaft and compressor.
Background technique
It is well known that the driving mechanism of Reciprocting piston compressor is motor-crankshaft-connecting rod-piston pin-piston, wherein
Main shaft part and the rotor assembly of crankshaft provide power input, and crankshaft eccentric portion and connecting rod macropore assemble output power.Because
The reason of dynamic balancing and structure design, the eccentric part length of crankshaft is usually very short, it is ensured that the compact design of compressor and good
Dynamic balancing effect, but side effect is that too short eccentric part length allows crankshaft eccentric portion stress to sharply increase, and is unfavorable for crankshaft
Durability.Therefore, compressor needs enough pumping abilities, it is ensured that compressor respectively rub it is secondary obtain good lubrication, especially song
Eccentric shaft portion.During compressor continuous operation, the lubrication in crankshaft eccentric portion is that there is no problem.But work as compressor shutdown
Afterwards, after friction secondary lubricating oil in crankshaft eccentric portion is evaporated completely, when compressor is once again powered up operating, the friction of crankshaft eccentric portion is secondary
It will be in for some time dry condition, great damage crankshaft eccentric portion surface causes to wear.Because of the lubrication of compressor
Oil is stored in housing bottom, and compressor is powered after operation, and lubricating oil reaches crankshaft eccentric portion friction pair from housing bottom and needs one
The fixed time, about 2~3 seconds, the specific time was related with compressor arrangement design, this time is exactly the dry friction of crankshaft eccentric portion
Time.Therefore, friction pair in crankshaft eccentric portion is highly desirable to the lubrication that lubricating oil is obtained in booting moment.
Summary of the invention
It is an object of the invention at least solve one of the technical problems existing in the prior art, a kind of crankshaft and pressure are provided
Contracting machine has in compressor initial operation stage to the secondary ability for carrying out fast lubricant of crankshaft eccentric portion friction, greatly improves
The secondary lubrication state at compressor start initial stage of crankshaft eccentric portion friction, extends compressor service life.
The technical solution adopted by the present invention to solve the technical problems is: a kind of crankshaft, including
Main shaft part is equipped with main shaft part oil circuit；
Fan leaf is connect with the main shaft part, and the fan leaf is equipped with oil-bearing structure and balance portion；
Eccentric part deviates the main shaft part axis and connect with the fan leaf, and the eccentric part is equipped with eccentric part oil circuit；
Wherein, the oil-bearing structure and the main shaft part oil circuit and eccentric part oil communication form fuel feeding access.
Preferably, the fan leaf includes the first fan leaf and the second fan leaf, and the oil-bearing structure is described including being located at
Oil storage tank on first fan leaf, second fan leaf connect with first fan leaf and cover the oil storage tank.
Preferably, the oil storage tank has with the oil storage tank entrance of the main shaft part oil communication and connects with eccentric part oil circuit
Logical oil storage tank outlet, the oil storage tank is in arc-shaped, and along crank rotation direction, the oil storage tank outlet is located at oil storage tank entrance
Rear.
Preferably, along crank rotation direction, the slot bottom of the oil storage tank has the slope of the oblique eccentric part side, institute
It states oil storage tank and is equipped with oil baffle structure in the inside of the oil storage tank entrance.
Preferably, the oil storage tank outlet is elongated.
Preferably, the eccentric part oil circuit includes the vertical oilhole of eccentric part and eccentric part transverse direction oilhole, on the eccentric part
Equipped with the inner cavity with the eccentric part oil communication, the bottom of chamber of the inner cavity is equipped with oil storage blind hole.
Preferably, the main shaft part oil circuit includes the vertical oilhole of main shaft part and main shaft part helical oil groove, the main shaft part spiral shell
One end of rotation oil groove is connected to the vertical oilhole of main shaft part, and the other end is connected to oil-bearing structure.
Preferably, the vertical oilhole of the main shaft part connects pump oil pipe, and the main shaft part is equipped with vertical with the main shaft part
The main shaft part stomata of oilhole connection, second fan leaf are equipped with fan leaf stoma, and it is in item that first fan leaf, which is equipped with,
The air vent channel of shape, the air vent channel are connected to the main shaft part stomata and fan leaf stoma.
Preferably, the eccentric part, main shaft part, fan leaf, pump oil pipe are stamping parts, and second fan leaf is equipped with
The mounting hole connecting with the eccentric part, the eccentric part and the second fan leaf weld, first fan leaf and the second fan
Leaf welding, second fan leaf and main shaft part are welded, and the main shaft part is connect with pump oil pipe with interference fit type.
Compressor, including crankshaft described in any one of above technical scheme.
A technical solution in above-mentioned technical proposal at least has the following advantages that or one of beneficial effect: setting on fan leaf
There is oil-bearing structure, lubricating oil can be stored in oil-bearing structure, and when compressor operation, the lubricating oil in oil-bearing structure is in inertia
It is quickly flowed under the action of power, directly lubrication crankshaft eccentric portion friction is secondary.The technical solution has in compressor initial launch rank
Section greatly improves crankshaft eccentric portion and rubs pair at the beginning of compressor start to the secondary ability for carrying out fast lubricant of crankshaft eccentric portion friction
The lubrication state of phase extends compressor service life.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is one embodiment Structure explosion diagram of crankshaft of the present invention；
Fig. 2 is one embodiment cross-sectional view shown in FIG. 1；
Fig. 3 is the first fan leaf of one embodiment and oil-bearing structure schematic diagram shown in FIG. 1；
Fig. 4 is one embodiment eccentric part schematic diagram of internal structure shown in FIG. 1.
Specific embodiment
This part will be described in specific embodiments of the present invention, and the preferred embodiments of the invention is shown in the accompanying drawings, attached
The effect of figure be with figure remark additionally book word segment description, enable a person to intuitively, visually understand of the invention
Each technical characteristic and overall technical architecture, but it should not be understood as limiting the scope of the invention.
In the present invention, when if there is being described to direction (upper and lower, left and right, before and after), be merely for convenience of description this
The technical solution of invention, rather than the technical characteristic of indication or suggestion meaning must have a particular orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
In the present invention, " several " are meant that one or more, " being greater than ", " small the meaning of " plurality " is two or more
In ", " being more than " etc. be interpreted as not including this number；" more than ", " following ", " within " etc. be interpreted as including this number.Of the invention
In description, if there is being described to " first ", " second " be only used for for the purpose of distinguishing technical characteristic, and should not be understood as instruction or dark
Show relative importance or implicitly indicates the quantity of indicated technical characteristic or implicitly indicate indicated technical characteristic
Precedence relationship.
In the present invention, unless otherwise restricted clearly, the words such as " setting ", " installation ", " connection " be shall be understood in a broad sense, example
Such as, it can be directly connected, it can also be indirectly connected through an intermediary；It may be a fixed connection, be also possible to detachably connect
It connects, can also be integrated molding；It can be mechanical connection, be also possible to be electrically connected or can communicate with each other；It can be two members
The interaction relationship of connection or two elements inside part.Skilled artisan can be with the tool of combination technology scheme
Hold in vivo and rationally determines the concrete meaning of above-mentioned word in the present invention.
Referring to Fig. 1, Fig. 2, the embodiment provides a kind of crankshafts, including
Main shaft part 1, is equipped with main shaft part oil circuit, and main shaft part 1 can provide power input, main shaft with rotor assembly connection
When portion 1 rotates, lubricating oil is conveyed along main shaft part oil circuit to multiple frictions are secondary；
Fan leaf is connect with the main shaft part 1, and the fan leaf is equipped with oil-bearing structure and balance portion 21, oil-bearing structure energy
Enough store lubricating oil；
Eccentric part 3 deviates 1 axis of main shaft part and connect with the fan leaf, and the eccentric part 3 is equipped with eccentric part oil
Road, eccentric part 3 can assemble output power with connecting rod macropore, and when main shaft part 1 rotates, lubricating oil enters bias along eccentric part oil circuit
Portion's friction is secondary, realizes lubrication；
Wherein, the oil-bearing structure and the main shaft part oil circuit and eccentric part oil communication form fuel feeding access.
In above-described embodiment, by the rotation of crankshaft, lubricating oil is along main shaft part oil circuit, oil-bearing structure and eccentric part oil circuit stream
It is dynamic, it is ensured that compressor respectively rub secondary acquisition good lubrication, especially crankshaft eccentric portion 3.After compressor shutdown, parts of lubricating oil
It is deposited in oil-bearing structure, when compressor is once again powered up operating, the lubricating oil in oil-bearing structure is quick under the action of inertia force
Flowing, the directly friction of lubrication crankshaft eccentric portion are secondary.The technical solution has in compressor initial operation stage to crankshaft eccentric portion
The secondary ability for carrying out fast lubricant of friction greatly improves the secondary lubrication state at compressor start initial stage of crankshaft eccentric portion friction,
Extend compressor service life.
Integral structure or split type structure can be used in the fan leaf, and oil storage tank, oil storage hole etc. can be used in oil-bearing structure,
Preferably, referring to Fig. 1, Fig. 2, Fig. 3, the fan leaf includes the first fan leaf 22 and the second fan leaf 23, the oil-bearing structure
Including the oil storage tank 24 being located on first fan leaf 22, second fan leaf 23 is connect simultaneously with first fan leaf 22
The oil storage tank 24 is covered, so that a part of oil storage tank 24 as fuel feeding access, avoids lubricating oil from overflowing at oil storage tank 24,
Guarantee pumping ability of the main shaft part oil circuit to eccentric part oil circuit.
Referring to Fig. 1, Fig. 2, in certain embodiments, the oil storage tank 24 has the oil storage with the main shaft part oil communication
Slot entrance 25 and 26 being exported with the oil storage tank of eccentric part oil communication, the oil storage tank 24 is in arc-shaped, along crank rotation direction,
The oil storage tank outlet 26 is located at the rear of oil storage tank entrance 25, has preferable pumping ability in the oil storage tank 24 of arc-shaped,
Lubricating oil is allowed faster to reach eccentric part friction from oil storage tank 24 secondary.
Referring to Fig. 3, along crank rotation direction, the slot bottom of the oil storage tank 24 has the oblique of oblique 3 side of eccentric part
The shape that slope, i.e. oil storage tank 24 helically rise, allows oil storage tank 24 to have pumping ability, forms upward motive force, allows lubrication
Oil faster reaches eccentric part friction pair from oil storage tank 24, and the oil storage tank 24 is equipped in the inside of the oil storage tank entrance 25
Oil baffle structure 27 forms oil storage space for blocking the reflux of oil.
Referring to Fig. 3, in certain embodiments, oil storage tank outlet 26 is elongated, oil storage tank outlet 26 for it is inclined
The eccentric part oil circuit of center portion 3 docks, and forms oil supply gallery.Elongated oil storage tank outlet 26 conveniently adapts to different eccentricity
Eccentric part 3.
Inclined hole can be used in the eccentric part oil circuit, is directly opened up by lower end surface secondary to eccentric part friction, it is preferred that referring to figure
4, the eccentric part oil circuit includes the vertical oilhole 31 of eccentric part and eccentric part transverse direction oilhole 32, and lubricating oil can be vertical through eccentric part
It is secondary that oilhole 31 and eccentric part transverse direction oilhole 32 flow to eccentric part friction.Wherein, the eccentric part 3 is equipped with and the eccentric part oil
The inner cavity 33 of road connection, eccentric part 3 form hollow structure, and the bottom of chamber of the inner cavity 33 is equipped with oil storage blind hole 34, oil storage blind hole 34
In can store partial lubrication with, when compressor is once again powered up operating, the work of lubricating oil in oil storage blind hole 34 in inertia force
With lower quick flowing, directly lubrication crankshaft eccentric portion friction pair.
Referring to Fig. 1, Fig. 2, the main shaft part oil circuit includes the vertical oilhole 11 of main shaft part and main shaft part helical oil groove 12, described
One end of main shaft part helical oil groove 12 is connected to the vertical oilhole 11 of main shaft part, and the other end is connected to oil-bearing structure, when crank rotation,
Lubricating oil is conveyed from the vertical oilhole 11 of main shaft part and main shaft part helical oil groove 12 to multiple frictions are secondary.
In certain embodiments, referring to Fig. 1, Fig. 2, the vertical oilhole 11 of main shaft part connects pump oil pipe 4, the main shaft part
1 is equipped with the main shaft part stomata 13 being connected to the vertical oilhole 11 of the main shaft part, and main shaft part stomata 13 guarantees lubrication for ventilating
Oil can smoothly enter into the vertical oilhole 11 of main shaft part, and second fan leaf 23 is equipped with fan leaf stoma 28, first wind
Flabellum 22 is equipped with the air vent channel 29 in bar shaped, and the air vent channel 29 is connected to the main shaft part stomata 13 and fan leaf stoma
28, it can satisfy the matching requirements of the eccentric part 3 of different eccentricity in the air vent channel 29 of bar shaped.
In certain embodiments, the eccentric part 3, main shaft part 1, fan leaf, pump oil pipe 4 are stamping parts, not cast life
It produces, structural strength is more preferable.Referring to Fig. 1, second fan leaf is equipped with the mounting hole connecting with the eccentric part 3, described inclined
Center portion 3 and the second fan leaf weld, and first fan leaf and the second fan leaf weld, second fan leaf and main shaft part 1
Welding, the form of welding can be laser welding, be also possible to be brazed, be also possible to electric resistance welding.The main shaft part 1 and pump oil pipe
4 are connected with interference fit type.
The embodiment of the present invention also provides a kind of compressor, including the crankshaft in any of the above embodiment.
Certainly, the invention is not limited to above embodiment, and those skilled in the art are without prejudice to originally
Equivalent deformation or replacement can be also made under the premise of spirit, these equivalent variation or replacement are all contained in the application right
It is required that in limited range.
Claims (10)
1. a kind of crankshaft, it is characterised in that: including
Main shaft part is equipped with main shaft part oil circuit；
Fan leaf is connect with the main shaft part, and the fan leaf is equipped with oil-bearing structure and balance portion；
Eccentric part deviates the main shaft part axis and connect with the fan leaf, and the eccentric part is equipped with eccentric part oil circuit；
Wherein, the oil-bearing structure and the main shaft part oil circuit and eccentric part oil communication form fuel feeding access.
2. crankshaft according to claim 1, it is characterised in that: the fan leaf includes the first fan leaf and the second fan
Leaf, the oil-bearing structure include the oil storage tank being located on first fan leaf, second fan leaf and first fan
Leaf connects and covers the oil storage tank.
3. crankshaft according to claim 2, it is characterised in that: the oil storage tank has and the main shaft part oil communication
It oil storage tank entrance and is exported with the oil storage tank of eccentric part oil communication, the oil storage tank is in arc-shaped, along crank rotation direction, institute
State the rear that oil storage tank outlet is located at oil storage tank entrance.
4. crankshaft according to claim 3, it is characterised in that: along crank rotation direction, the slot bottom of the oil storage tank has
The slope of the oblique eccentric part side, the oil storage tank are equipped with oil baffle structure in the inside of the oil storage tank entrance.
5. crankshaft according to claim 3, it is characterised in that: the oil storage tank outlet is elongated.
6. crankshaft according to claim 1, it is characterised in that: the eccentric part oil circuit include the vertical oilhole of eccentric part and partially
Center portion transverse direction oilhole, the eccentric part are equipped with the inner cavity with the eccentric part oil communication, and the bottom of chamber of the inner cavity is equipped with storage
Oily blind hole.
7. crankshaft according to claim 2, it is characterised in that: the main shaft part oil circuit includes the vertical oilhole of main shaft part and master
One end of axle portion helical oil groove, the main shaft part helical oil groove is connected to the vertical oilhole of main shaft part, and the other end and oil-bearing structure connect
It is logical.
8. crankshaft according to claim 7, it is characterised in that: the vertical oilhole of main shaft part connects pump oil pipe, the master
Axle portion is equipped with the main shaft part stomata being connected to the vertical oilhole of the main shaft part, and second fan leaf is equipped with fan leaf gas
Hole, first fan leaf are equipped with the air vent channel in bar shaped, and the air vent channel is connected to the main shaft part stomata and fan
Leaf stoma.
9. crankshaft according to claim 8, it is characterised in that: the eccentric part, main shaft part, fan leaf, pump oil pipe are
Stamping parts, second fan leaf are equipped with the mounting hole connecting with the eccentric part, and the eccentric part and the second fan leaf weld
It connects, first fan leaf and the second fan leaf weld, and second fan leaf and main shaft part are welded, the main shaft part and pump oil
Pipe is connected with interference fit type.
10. compressor, it is characterised in that: including crankshaft according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910444808.1A CN110195695B (en) | 2019-05-27 | 2019-05-27 | Crankshaft and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910444808.1A CN110195695B (en) | 2019-05-27 | 2019-05-27 | Crankshaft and compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110195695A true CN110195695A (en) | 2019-09-03 |
| CN110195695B CN110195695B (en) | 2020-06-30 |
Family
ID=67753118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910444808.1A Active CN110195695B (en) | 2019-05-27 | 2019-05-27 | Crankshaft and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110195695B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523996A (en) * | 2020-12-05 | 2021-03-19 | 江西泛宇压缩机科技有限公司 | Novel compressor crankshaft |
| CN112539156A (en) * | 2020-12-05 | 2021-03-23 | 江西泛宇压缩机科技有限公司 | Compressor crankshaft capable of oiling rapidly |
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| US7367784B2 (en) * | 2001-07-28 | 2008-05-06 | Lg Electronics Inc. | Oil supply device for compressor in refrigerating system |
| EP1954944A1 (en) * | 2005-11-30 | 2008-08-13 | Arcelik Anonim Sirketi | A compressor |
| CN202417883U (en) * | 2011-12-29 | 2012-09-05 | 青岛宝兰格制冷有限公司 | Refrigeration compressor with novel crankshaft oil groove structure |
| CN103382931A (en) * | 2013-05-09 | 2013-11-06 | 广东技术师范学院 | Refrigeration compressor with oil supply system |
| CN205297862U (en) * | 2015-11-18 | 2016-06-08 | 玉环制冷设备配件有限公司 | Crank shaft of compressor |
| CN205638852U (en) * | 2016-04-11 | 2016-10-12 | 安徽美芝制冷设备有限公司 | Compressor crankshaft and have its compressor |
-
2019
- 2019-05-27 CN CN201910444808.1A patent/CN110195695B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19809410A1 (en) * | 1998-03-05 | 1999-09-09 | Volkswagen Ag | Lubrication arrangement for automotive piston engine has passage |
| US7367784B2 (en) * | 2001-07-28 | 2008-05-06 | Lg Electronics Inc. | Oil supply device for compressor in refrigerating system |
| EP1954944A1 (en) * | 2005-11-30 | 2008-08-13 | Arcelik Anonim Sirketi | A compressor |
| CN202417883U (en) * | 2011-12-29 | 2012-09-05 | 青岛宝兰格制冷有限公司 | Refrigeration compressor with novel crankshaft oil groove structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112523996A (en) * | 2020-12-05 | 2021-03-19 | 江西泛宇压缩机科技有限公司 | Novel compressor crankshaft |
| CN112539156A (en) * | 2020-12-05 | 2021-03-23 | 江西泛宇压缩机科技有限公司 | Compressor crankshaft capable of oiling rapidly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110195695B (en) | 2020-06-30 |
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