CN111287971A - Rotor compressor - Google Patents
Rotor compressor Download PDFInfo
- Publication number
- CN111287971A CN111287971A CN201811505020.9A CN201811505020A CN111287971A CN 111287971 A CN111287971 A CN 111287971A CN 201811505020 A CN201811505020 A CN 201811505020A CN 111287971 A CN111287971 A CN 111287971A
- Authority
- CN
- China
- Prior art keywords
- rolling bearing
- annular insert
- crankshaft
- close
- annular
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
- F04C18/3566—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along more than line or surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
The invention provides a rotor compressor, which comprises a rotor core, a crankshaft, an upper cylinder cover and an annular insert, wherein a containing hole is formed in one end face of the rotor core, which is close to the upper cylinder cover, the annular insert is sleeved on the crankshaft and is positioned in the containing hole, the axis of the annular insert is collinear with that of the rotor core, a planar rolling bearing is sleeved at one end, which is close to the annular insert, of the upper cylinder cover, the annular insert is contacted with the end face of one end of the planar rolling bearing, the rolling area of the planar rolling bearing is positioned in the end face of one end, which is close to the planar rolling bearing, of the annular insert, the annular insert is extruded through the self weights of a rotor and the crankshaft in the rotor compressor and is contacted with the end face of one end of the planar rolling bearing, so that the planar rolling bearing is driven to rotate, and the sliding friction between the lower thrust, mechanical loss is reduced, and the efficiency of the compressor is improved.
Description
Technical Field
The invention belongs to the field of compressors, and relates to a rotor compressor.
Background
Fig. 1 is a partial sectional view of a prior art rotary compressor, and referring to fig. 1, a crankshaft 1 of the prior art rotary compressor is mostly positioned by a lower thrust surface 2 of the crankshaft 1, so as to limit the up-and-down movement of the crankshaft 1. Because the dead weight of the rotor 3 and the crankshaft 1 inside the rotor compressor causes the lower thrust surface 2 of the crankshaft 1 to contact with the lower cylinder cover 4, when the compressor works, the lower thrust surface 2 of the crankshaft 1 and the end surface of the lower cylinder cover 4 can move relatively, the friction between the two belongs to sliding friction, and large mechanical loss can be generated, thereby reducing the performance of the compressor. And the lubricating condition between the lower thrust surface 2 of the crankshaft 1 and the lower cylinder cover 4 is severe, so that the thrust surface is easy to wear, and the reliability of the compressor is influenced.
Disclosure of Invention
The invention aims to provide a rotor compressor to solve the problem that in the prior art, sliding friction is generated between a lower thrust surface of a crankshaft and a lower cylinder cover to cause large mechanical loss.
In order to solve the technical problem, the invention provides a rotor compressor which comprises a rotor core, a crankshaft, an upper cylinder cover and an annular insert, wherein an accommodating hole is formed in one end face, close to the upper cylinder cover, of the rotor core, the annular insert is sleeved on the crankshaft and located in the accommodating hole, the axis of the annular insert is collinear with the axis of the rotor core, a planar rolling bearing is sleeved at one end, close to the annular insert, of the upper cylinder cover, the annular insert is in contact with the end face of one end of the planar rolling bearing, and the rolling area of the planar rolling bearing is located in the end face, close to one end of the planar rolling bearing, of the annular insert.
Preferably, the annular insert is made of plastic.
Preferably, the annular insert is made of a metal material.
Preferably, along the axial direction of the crankshaft, the contact position of the annular insert and the planar rolling bearing is located inside one end, close to the upper cylinder cover, of the rotor core.
Preferably, along the axial direction of the crankshaft, the contact position of the annular insert and the planar rolling bearing is located outside one end of the rotor core, which is close to the upper cylinder cover.
Preferably, the upper cylinder cover is provided with a step groove surrounding the upper cylinder cover, and the planar rolling bearing is embedded in the step groove.
Preferably, a gap is left between the lower thrust surface of the crankshaft and one end surface of the lower cylinder cover of the rotor compressor, which is close to the cylinder of the rotor compressor.
Compared with the prior art, the invention provides a rotor compressor, which comprises a rotor core, a crankshaft, an upper cylinder cover and an annular insert, wherein an end surface of the rotor core, which is close to the upper cylinder cover, is provided with a containing hole, the annular insert is sleeved on the crankshaft and is positioned in the containing hole, the axis of the annular insert is collinear with the axis of the rotor core, one end of the upper cylinder cover, which is close to the annular insert, is sleeved with a planar rolling bearing, the annular insert is in contact with the end surface of one end of the planar rolling bearing, the rolling area of the planar rolling bearing is positioned in the end surface of the annular insert, which is close to one end of the planar rolling bearing, the annular insert is extruded by the self weight of a rotor and the crankshaft in the rotor compressor and is in contact with the end surface of one end of the planar rolling bearing, therefore, the plane rolling bearing is driven to rotate, so that the sliding friction between the lower thrust surface of the original crankshaft and the end surface of the lower cylinder cover is changed into the rolling friction of the plane rolling bearing, the mechanical loss is reduced, and the efficiency of the compressor is improved.
Drawings
FIG. 1 is a partial cross-sectional view of a prior art rotary compressor;
FIG. 2 is a partial cross-sectional view of a rotary compressor provided in accordance with an embodiment of the present invention;
FIG. 3 is an enlarged partial schematic view at A in FIG. 2;
wherein, 1-crankshaft; 2-lower thrust surface of crankshaft; 3-a rotor; 4-lower cylinder cover; 10-a rotor core; 11-a crankshaft; 12-upper cylinder cover; 13-a ring insert; 14-a planar rolling bearing; 15-a step groove; 16-a lower thrust surface of the crankshaft; 17-lower cylinder cover.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the appended claims and the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. The same or similar reference numbers in the drawings identify the same or similar elements.
Fig. 2 is a partial cross-sectional view of a rotor compressor according to an embodiment of the present invention, fig. 3 is a partial enlarged schematic view of a position a in fig. 2, please refer to fig. 2 and fig. 3, the rotor compressor includes a rotor core 10, a crankshaft 11, an upper cylinder cover 12 and an annular insert 13, the crankshaft 11 includes a long shaft and an eccentric shaft, an end surface of the rotor core 10 close to the upper cylinder cover 12 is opened with a receiving hole, the annular insert 13 is sleeved on the long shaft of the crankshaft 11 and located in the receiving hole, an axis of the annular insert 13 is collinear with an axis of the rotor core 10, one end of the upper cylinder cover 12 close to the annular insert 13 is sleeved with a planar rolling bearing 14, the annular insert 13 is in contact with an end surface of one end of the planar rolling bearing 14, and a rolling area of the planar rolling bearing 14 is located in an end surface of the annular insert 13 close to one end of the planar rolling bearing 14, the annular insert 13 is extruded by the self weight of the rotor and the crankshaft 11 in the rotor compressor, and the annular insert 13 is in contact with the end face of one end of the planar rolling bearing 14, so that the planar rolling bearing 14 is driven to rotate, the sliding friction between the lower thrust surface 16 of the crankshaft 11 and the end face of the lower cylinder cover 17 is changed into the rolling friction of the planar rolling bearing 14, the mechanical loss is reduced, and the efficiency of the compressor is improved.
The planar rolling bearing 14 may include a cage and rolling bodies spaced along the cage, and the rolling bodies may be needles, cylindrical rollers or balls. It can be understood that the rolling area of the rolling element is the rolling area of the planar rolling bearing 14, so that the annular insert 13 can effectively drive the planar rolling bearing 14 to rotate, thereby changing the sliding friction between the lower thrust surface 16 of the original crankshaft 11 and the end surface of the lower cylinder head 17 into the rolling friction of the planar rolling bearing 14, reducing the mechanical loss, and improving the efficiency of the compressor.
Further, the material of the ring insert 13 is a plastic material, or the material of the ring insert 13 is a metal material, it should be appreciated that such a limitation is only used to illustrate the material of the ring insert 13, and in practice, the material of the ring insert 13 may be a material with high hardness and high wear resistance to meet the requirement of wear resistance of the ring insert 13.
Further, along the axial direction of the crankshaft 11, the contact portion of the annular insert 13 and the planar rolling bearing 14 is located inside one end of the rotor core 10 close to the upper cylinder head 12. It should be appreciated that such a limitation is only used to exemplify the position of the contact point of the annular insert 13 and the planar rolling bearing 14, and in practice, the contact point of the annular insert 13 and the planar rolling bearing 14 may also be located outside the end of the rotor core 10 close to the upper cylinder head 12 in the axial direction of the crankshaft 11.
Further, go up to have on the cylinder cap 12 and surround the step groove 15 of going up cylinder cap 12, planar rolling bearing 14 inlays and establishes in step groove 15, go up and have on the cylinder cap 12 and surround the step groove 15 of going up cylinder cap 12, step groove 15 is the annular so that hold planar rolling bearing 14, through setting up step groove 15 can improve planar rolling bearing 14's installation reliability.
Further, a gap is left between the lower thrust surface 16 of the crankshaft 11 and one end surface of the lower cylinder head 17 of the rotor compressor, which is close to the cylinder of the rotor compressor. The relative movement between the lower thrust surface 16 of the crankshaft 11 and one end surface of the lower cylinder cover 17 of the rotor compressor close to the cylinder of the rotor compressor is avoided, the mechanical loss is reduced, and the efficiency of the compressor is improved.
In summary, the present invention provides a rotor compressor, including a rotor core, a crankshaft, an upper cylinder cover and an annular insert, wherein an end surface of the rotor core close to the upper cylinder cover is provided with a receiving hole, the annular insert is sleeved on the crankshaft and located in the receiving hole, an axis of the annular insert is collinear with an axis of the rotor core, one end of the upper cylinder cover close to the annular insert is sleeved with a planar rolling bearing, the annular insert is in contact with an end surface of one end of the planar rolling bearing, a rolling area of the planar rolling bearing is located in an end surface of the annular insert close to one end of the planar rolling bearing, the annular insert is pressed by a self weight of a rotor and the crankshaft inside the rotor compressor, the annular insert is in contact with the end surface of one end of the planar rolling bearing, so as to drive the planar rolling bearing to rotate, the sliding friction between the lower thrust surface of the original crankshaft and the end surface of the lower cylinder cover is changed into the rolling friction of the planar rolling bearing, the mechanical loss is reduced, and the efficiency of the compressor is improved.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (7)
1. The utility model provides a rotor compressor, its characterized in that inserts including rotor core, bent axle, last cylinder cover and annular, rotor core is close to a holding hole has been seted up on the terminal surface of last cylinder cover, the annular is inserted the cover and is located on the bent axle and be located in the holding hole, just the axis that the annular was inserted with rotor core's axis collineation, go up and be close to on the cylinder cover one pot head that the annular was inserted is equipped with a plane antifriction bearing, the annular insert with the terminal surface of plane antifriction bearing's one end contacts, just plane antifriction bearing's roll region is located the annular is inserted and is close to in the terminal surface of plane antifriction bearing's one end.
2. The rotary compressor of claim 1, wherein the annular insert is formed of a plastic material.
3. The rotary compressor of claim 1, wherein the annular insert is made of a metal.
4. The rotary compressor according to claim 1, wherein a contact portion of the annular insert with the flat rolling bearing is located inside an end of the rotor core close to the upper cylinder head in an axial direction of the crankshaft.
5. The rotary compressor according to claim 1, wherein a contact portion of the annular insert with the flat rolling bearing is located outside an end of the rotor core close to the upper cylinder head in an axial direction of the crankshaft.
6. The rotary compressor of claim 1, wherein the upper cylinder head has a stepped groove formed therein around the upper cylinder head, and the flat rolling bearing is fitted in the stepped groove.
7. The rotary compressor according to claim 1, wherein a gap is left between a lower thrust surface of the crankshaft and an end surface of a lower cylinder head of the rotary compressor, the end surface being close to a cylinder of the rotary compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505020.9A CN111287971A (en) | 2018-12-10 | 2018-12-10 | Rotor compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505020.9A CN111287971A (en) | 2018-12-10 | 2018-12-10 | Rotor compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111287971A true CN111287971A (en) | 2020-06-16 |
Family
ID=71020732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811505020.9A Pending CN111287971A (en) | 2018-12-10 | 2018-12-10 | Rotor compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111287971A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7357178B1 (en) | 2023-05-25 | 2023-10-05 | 日立ジョンソンコントロールズ空調株式会社 | Compressors and air conditioners |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2871910Y (en) * | 2005-12-29 | 2007-02-21 | 广州冷机股份有限公司 | Bearing of electric-motor rotor of refrigerating compressor |
| CN201661467U (en) * | 2010-02-23 | 2010-12-01 | 上海日立电器有限公司 | Anti-thrust assembly of rotary compressor |
| CN201747609U (en) * | 2010-06-28 | 2011-02-16 | 上海日立电器有限公司 | Top stop push surface assembly for compressor upper cylinder cover |
| CN205436707U (en) * | 2016-02-25 | 2016-08-10 | 中钢集团西安重机有限公司 | Veneer reeling machine lower roll structure with antifriction bearing supports |
| CN105952647A (en) * | 2016-06-20 | 2016-09-21 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN106286302A (en) * | 2016-09-13 | 2017-01-04 | 西安庆安制冷设备股份有限公司 | A kind of rotor-type compressor structure |
| CN206738154U (en) * | 2017-04-28 | 2017-12-12 | 广东美芝制冷设备有限公司 | Rotary compressor |
-
2018
- 2018-12-10 CN CN201811505020.9A patent/CN111287971A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2871910Y (en) * | 2005-12-29 | 2007-02-21 | 广州冷机股份有限公司 | Bearing of electric-motor rotor of refrigerating compressor |
| CN201661467U (en) * | 2010-02-23 | 2010-12-01 | 上海日立电器有限公司 | Anti-thrust assembly of rotary compressor |
| CN201747609U (en) * | 2010-06-28 | 2011-02-16 | 上海日立电器有限公司 | Top stop push surface assembly for compressor upper cylinder cover |
| CN205436707U (en) * | 2016-02-25 | 2016-08-10 | 中钢集团西安重机有限公司 | Veneer reeling machine lower roll structure with antifriction bearing supports |
| CN105952647A (en) * | 2016-06-20 | 2016-09-21 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN106286302A (en) * | 2016-09-13 | 2017-01-04 | 西安庆安制冷设备股份有限公司 | A kind of rotor-type compressor structure |
| CN206738154U (en) * | 2017-04-28 | 2017-12-12 | 广东美芝制冷设备有限公司 | Rotary compressor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7357178B1 (en) | 2023-05-25 | 2023-10-05 | 日立ジョンソンコントロールズ空調株式会社 | Compressors and air conditioners |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200616 |
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| RJ01 | Rejection of invention patent application after publication |