CN106870371A - A kind of low back pressure compressor of birotor - Google Patents
A kind of low back pressure compressor of birotor Download PDFInfo
- Publication number
- CN106870371A CN106870371A CN201510922521.7A CN201510922521A CN106870371A CN 106870371 A CN106870371 A CN 106870371A CN 201510922521 A CN201510922521 A CN 201510922521A CN 106870371 A CN106870371 A CN 106870371A
- Authority
- CN
- China
- Prior art keywords
- oil guiding
- guiding hole
- hole
- back pressure
- low back
- 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
Links
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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
-
- 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
- F04C2240/00—Components
- F04C2240/80—Other components
Abstract
The present invention provides a kind of low back pressure compressor of birotor, including：Upper cylinder, lower cylinder and bent axle；Upper suction hole, is arranged at upper cylinder；Lower suction hole, is arranged at lower cylinder；Intermediate plate, with the cavity for accommodating bent axle, is arranged between upper cylinder and lower cylinder；Intermediate plate is provided with oil guiding hole, and oil guiding hole first end connects cavity, and oil guiding hole is connected with upper suction hole, and/or oil guiding hole is connected with lower suction hole.The low back pressure compressor of birotor that the present invention is provided, by the oil guiding hole connected with upper suction hole, lower suction hole, the negative pressure produced using the refrigerant of certain flow rate, oil can be sucked upper suction hole, lower suction hole by oil guiding hole, and as air inlet enters into working chamber together, lubricating oil inside low back pressure compressor internal piston, intermediate plate into the lubrication realized inside working chamber to sliding position in working chamber can be made, so as to improve the Performance And Reliability of compressor.
Description
Technical field
The present invention relates to compressor field, and in particular to a kind of low back pressure compressor of birotor.
Background technology
Enclosure interior is the rolling rotor compressor of low back pressure (i.e. pressure of inspiration(Pi)), is compared to enclosure interior
The compressor with rolling rotor of high back pressure, there is following advantage：For high pressure refrigerant compressor (such as carbon dioxide compression
Machine), the enclosure interior pressure of low back pressure compressor is pressure of inspiration(Pi), and the voltage endurance capability requirement to housing is low；Pressure
The motor of contracting machine is in enclosure interior, and the housing environment temperature of low back pressure compressor is low, to the high temperature resistant energy of motor
Power requirement is low；For carbon-hydrogen refrigerant compressor (such as R290 compressors), the enclosure interior of low back pressure compressor
It is pressure of inspiration(Pi), refrigerant is low with the solubility of refrigerator oil, coolant injection amount can be substantially reduced, because its is inflammable
Explosive characteristic, reducing coolant injection amount can improve security, and expand this kind of range of application of compressor.
At present, the lubrication of low back pressure compressor moving component is mainly realized in the following way：In compression
The bottom of machine is provided with lubricating oil bath, and the bottom of bent axle is extend into oil sump, compressor in the running, by centrifugation
The mode of pump oil pumps into lubricating oil in the through hole in the middle of bent axle, then the radial direction oil by being connected with through hole on bent axle
Hole delivers lubricating oil to the sliding positions such as upper cylinder cover, lower cylinder cap, piston, intermediate plate and blade.
Because lubricating oil is in enclosure interior, and enclosure interior is low back pressure, therefore in the pressure of lubricating oil and housing
The pressure in portion is identical, is the pressure of inspiration(Pi) of compressor, so by bent axle radial direction oil hole be delivered to internal piston,
Lubricating oil pressure inside intermediate plate is substantially identical with pressure of inspiration(Pi).And inside the working chamber of compressor, refrigerant with
The operating for compressor rises to pressure at expulsion by pressure of inspiration(Pi).
Therefore, the pressure in working chamber is all the time close to or greater than the lubrication pressure inside internal piston, intermediate plate
Power, due to the presence of pressure difference, it is right that the lubricating oil inside internal piston, intermediate plate cannot be introduced into being realized in working chamber
The lubrication of sliding position, so as to influence the Performance And Reliability of compressor.
The content of the invention
In view of problems of the prior art, it is an object of the invention to provide a kind of low back pressure compressor, can make
Lubricating oil inside low back pressure compressor internal piston, intermediate plate is into realizing in working chamber inside working chamber
The lubrication of sliding position, so as to improve the Performance And Reliability of compressor.
The present invention provides a kind of low back pressure compressor of birotor, including：
Upper cylinder, lower cylinder and bent axle；
Upper suction hole, is arranged at upper cylinder；
Lower suction hole, is arranged at lower cylinder；
Intermediate plate, with the cavity for accommodating bent axle, is arranged between upper cylinder and lower cylinder；
Intermediate plate is provided with oil guiding hole, and oil guiding hole first end connection cavity, oil guiding hole is connected with upper suction hole, and/
Or oil guiding hole is connected with lower suction hole.
The low back pressure compressor of birotor that the present invention is provided, upper suction hole and/or lower suction hole are connected with cavity,
In compressor operating, when the refrigerant with certain flow rate flows through upper suction hole, lower suction hole, can be in upper air-breathing
Hole, lower suction hole and through hole junction form certain negative pressure, so in the presence of pressure difference, intermediate plate cavity
Internal lubricating oil, the refrigerant that compression chamber can be leaked, suction hole, lower suction hole in suction, and with
Air inlet and enter into working chamber together, so as to the lubrication to sliding position in working chamber, so as to improve compressor
Performance And Reliability.
Further, oil guiding hole is connected with upper suction hole at the second end of oil guiding hole.
Further, oil guiding hole is connected with lower suction hole at the second end of oil guiding hole.
Further, oil guiding hole is the through hole closed at the second end；Or, oil guiding hole is using intermediate plate stopper second
Closed at end..
Further, oil guiding hole is connected with upper suction hole by the first intercommunicating pore.
Further, oil guiding hole is connected with lower suction hole by the second intercommunicating pore.
Further, the central axis of the first intercommunicating pore, the second intercommunicating pore are in the central shaft of oil guiding hole, and that
This overlaps.
Compared with prior art, the low back pressure compressor of birotor that the present invention is provided, has the advantages that：
By the oil guiding hole connected with upper suction hole, lower suction hole, using the negative pressure of the refrigerant generation of certain flow rate,
Oil can be sucked upper suction hole, lower suction hole by oil guiding hole, and as air inlet enters into working chamber together,
So as to the lubrication to sliding position in working chamber, can make inside low back pressure compressor internal piston, intermediate plate
Lubricating oil into the lubrication realized inside working chamber to sliding position in working chamber, so as to improve the property of compressor
Energy and reliability.
Brief description of the drawings
Fig. 1 is the schematic diagram of the low back pressure compressor of birotor of one embodiment of the present of invention.
In Fig. 1：
Cylinder cap under 1-, 2- lower pistons, 3- lower cylinders, 4- intermediate plates, 5- upper pistons, 6- upper cylinders, 7- upper cylinder halfs
Lid, 8- bent axles, 9- air inlet pipe, the upper suction holes of 10-, 11- oil guiding holes, 12- intermediate plate stoppers, suction hole under 13-,
The intercommunicating pores of 14- first, the intercommunicating pores of 15- second
Specific embodiment
As shown in figure 1, the low back pressure compressor of the birotor of one embodiment of the present of invention, including：
Upper cylinder 6, lower cylinder 3 and bent axle 8；
Upper suction hole 10, is arranged at upper cylinder 6；
Lower suction hole 13, is arranged at lower cylinder 3；
Intermediate plate 4, with the cavity for accommodating bent axle 8, is arranged between upper cylinder 6 and lower cylinder 3；
Intermediate plate 4 is provided with oil guiding hole 11, the first end of oil guiding hole 11 connection cavity, oil guiding hole 11 and upper air-breathing
Hole 10 is connected, and/or oil guiding hole 11 is connected with lower suction hole 13.
The low back pressure compressor of birotor of the present embodiment, upper suction hole 10 and/or lower suction hole 13 are connected with cavity
It is logical, in compressor operating, when the refrigerant with certain flow rate flows through upper suction hole 10, lower suction hole 13, meeting
Certain negative pressure is formed in upper suction hole 10, lower suction hole 13 and through hole junction, so in the presence of pressure difference,
The lubricating oil of intermediate plate cavity inside, can be inhaled into suction hole 10, lower suction hole 13, and with air inlet one
Rise and enter into working chamber, so as to the lubrication of sliding position in working chamber so that improve compressor performance and can
By property, the solid line with arrow is the flow direction of oil in Fig. 1, and the dotted line with arrow is the flow direction of cold coal.
Oil guiding hole 11 is connected with upper suction hole 10 at the second end of oil guiding hole 11.
Oil guiding hole 11 is connected with lower suction hole 13 at the second end of oil guiding hole 11.
The configured bore therethrough shape of oil guiding hole 11 can change according to actual design, and the cross section of oil guiding hole 11 can be with
It is circle, ellipse, polygon etc., the cross section of oil guiding hole 11 is circle in the present embodiment.
Oil guiding hole 11 can also be blind bore at the second end.In a preferred embodiment, because processing needs, lead
Oilhole 11 is processed as through hole, is closed at the second end using intermediate plate stopper 12.
More preferably, oil guiding hole 11 is connected with upper suction hole 10 by the first intercommunicating pore 14, in the first intercommunicating pore 14
Central shaft of the heart axle perpendicular to oil guiding hole 11.Certain first intercommunicating pore 14 can also be not orthogonal to the center of oil guiding hole 11
Axle, the present invention is without limitation.
Similarly, oil guiding hole 11 is connected with lower suction hole 13 by the second intercommunicating pore 15, the second intercommunicating pore 15
Central axis in the central shaft of oil guiding hole 11.Certain second intercommunicating pore 15 can also be not orthogonal to oil guiding hole 11
Central shaft, the present invention it is without limitation.
First intercommunicating pore 14, the configured bore therethrough shape of the second intercommunicating pore 15 can change according to actual design, Oil Guide
The cross section in hole 11 can be circle, ellipse, polygon etc., the first intercommunicating pore 14 and second in the present embodiment
The cross section of intercommunicating pore 15 is circle.
In the present embodiment, the first intercommunicating pore 14, the center overlapping of axles of the second intercommunicating pore 15, in other embodiments,
First intercommunicating pore 14 can also be misaligned with the central shaft of the second intercommunicating pore 15.
The low back pressure compressor of birotor that the present invention is provided, by the Oil Guide connected with upper suction hole, lower suction hole
Oil can be sucked upper suction hole, lower suction by hole, the negative pressure produced using the refrigerant of certain flow rate by oil guiding hole
Stomata, and as air inlet enters into working chamber together, can make in low back pressure compressor internal piston, intermediate plate
The lubricating oil in portion into the lubrication realized inside working chamber to sliding position in working chamber, so as to improve compressor
Performance And Reliability.
Preferred embodiment of the invention described in detail above.It should be appreciated that the ordinary skill people of this area
Member just can make many modifications and variations without creative work with design of the invention.Therefore, all skill
In art field technical staff under this invention's idea on the basis of existing technology by logic analysis, reasoning or
The available technical scheme of limited experiment, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. the low back pressure compressor of a kind of birotor, including：
Upper cylinder, lower cylinder and bent axle；
Upper suction hole, is arranged at the upper cylinder；
Lower suction hole, is arranged at the lower cylinder；
Intermediate plate, with the cavity for accommodating the bent axle, is arranged between the upper cylinder and the lower cylinder；
Characterized in that,
The intermediate plate is provided with oil guiding hole, and the oil guiding hole first end connects the cavity, the oil guiding hole and institute
Suction hole connection is stated, and/or the oil guiding hole is connected with the lower suction hole.
2. the low back pressure compressor of birotor as claimed in claim 1, it is characterised in that the oil guiding hole and the upper suction
Stomata is connected at the second end of the oil guiding hole.
3. the low back pressure compressor of birotor as claimed in claim 1, it is characterised in that the oil guiding hole and the lower suction
Stomata is connected at the second end of the oil guiding hole.
4. the low back pressure compressor of birotor as claimed in claim 2 or claim 3, it is characterised in that the oil guiding hole is second
Blind bore at end.
5. the low back pressure compressor of birotor as claimed in claim 4, it is characterised in that the oil guiding hole uses intermediate plate
Stopper is closed at the second end.
6. the low back pressure compressor of birotor as claimed in claim 1, it is characterised in that the oil guiding hole and the upper suction
Stomata is connected by the first intercommunicating pore.
7. the low back pressure compressor of birotor as claimed in claim 6, it is characterised in that the center of first intercommunicating pore
Central shaft of the axle perpendicular to the oil guiding hole.
8. the low back pressure compressor of birotor as claimed in claim 7, it is characterised in that the oil guiding hole and the lower suction
Stomata is connected by the second intercommunicating pore.
9. the low back pressure compressor of birotor as claimed in claim 8, it is characterised in that the center of second intercommunicating pore
Central shaft of the axle perpendicular to the oil guiding hole.
10. the low back pressure compressor of birotor as claimed in claim 9, it is characterised in that first intercommunicating pore with
The center overlapping of axles of second intercommunicating pore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510922521.7A CN106870371A (en) | 2015-12-11 | 2015-12-11 | A kind of low back pressure compressor of birotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510922521.7A CN106870371A (en) | 2015-12-11 | 2015-12-11 | A kind of low back pressure compressor of birotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106870371A true CN106870371A (en) | 2017-06-20 |
Family
ID=59178210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510922521.7A Pending CN106870371A (en) | 2015-12-11 | 2015-12-11 | A kind of low back pressure compressor of birotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106870371A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542419A (en) * | 2022-03-03 | 2022-05-27 | 广东美芝制冷设备有限公司 | Compressor, heat exchange system and electrical equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004108165A (en) * | 2002-09-13 | 2004-04-08 | Sanyo Electric Co Ltd | Rotary compressor |
| CN1847662A (en) * | 2001-09-27 | 2006-10-18 | 三洋电机株式会社 | Compressor and producing method thereof |
| EP1798373A2 (en) * | 2005-12-16 | 2007-06-20 | Sanyo Electric Co., Ltd. | Multistage hermetic rotary compressor |
| CN201666239U (en) * | 2010-04-02 | 2010-12-08 | 珠海格力电器股份有限公司 | Two-stage compressor |
| CN102650293A (en) * | 2011-02-24 | 2012-08-29 | 珠海格力电器股份有限公司 | Compressor and oil return structure of compressor |
-
2015
- 2015-12-11 CN CN201510922521.7A patent/CN106870371A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847662A (en) * | 2001-09-27 | 2006-10-18 | 三洋电机株式会社 | Compressor and producing method thereof |
| JP2004108165A (en) * | 2002-09-13 | 2004-04-08 | Sanyo Electric Co Ltd | Rotary compressor |
| EP1798373A2 (en) * | 2005-12-16 | 2007-06-20 | Sanyo Electric Co., Ltd. | Multistage hermetic rotary compressor |
| CN201666239U (en) * | 2010-04-02 | 2010-12-08 | 珠海格力电器股份有限公司 | Two-stage compressor |
| CN102650293A (en) * | 2011-02-24 | 2012-08-29 | 珠海格力电器股份有限公司 | Compressor and oil return structure of compressor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542419A (en) * | 2022-03-03 | 2022-05-27 | 广东美芝制冷设备有限公司 | Compressor, heat exchange system and electrical equipment |
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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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 201206 Pudong New Area Jinqiao Ning Road, Shanghai, No. 888 Applicant after: Shanghai Haili Electrical Appliance Co. Ltd. Address before: 201206 Pudong New Area Jinqiao Ning Road, Shanghai, No. 888 Applicant before: Rili Electric Appliance Co., Ltd., Shanghai |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |