CN105673082A - Scroll expander for micro-organic rankine cycle - Google Patents
Scroll expander for micro-organic rankine cycle Download PDFInfo
- Publication number
- CN105673082A CN105673082A CN201610033139.5A CN201610033139A CN105673082A CN 105673082 A CN105673082 A CN 105673082A CN 201610033139 A CN201610033139 A CN 201610033139A CN 105673082 A CN105673082 A CN 105673082A
- Authority
- CN
- China
- Prior art keywords
- support body
- static
- vortex tooth
- scroll
- tooth
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
-
- 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
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to a scroll expander for the micro-organic rankine cycle. A static scroll shell is fixedly and hermetically connected with a support body; a static scroll wrap and a kinetic scroll wrap are arranged in the static scroll shell, and the static scroll wrap and the kinetic scroll wrap are inserted mutually; the back part of the static scroll wrap is fixedly connected with the static scroll shell; the back part of the kinetic scroll wrap is connected with a cross-shaped sliding ring through a back chute in a matching manner, and the cross-shaped sliding ring is connected with two chutes in the support body through sliding keys in the matching manner to realize revolution translation motion of the scroll wraps; one end of a crankshaft is connected with the kinetic scroll wrap through a needle bearing, the middle part of the crankshaft is connected with a thrust bearing nested in a seal disc, and the other end of the crankshaft is arranged on a support bearing arranged on the support body; a crank pin at the upper end of the crankshaft is equipped with a fan-shaped balancing weight, and the balancing weight is used for balancing eccentric forces of the kinetic scroll wrap, the needle bearing and the crank pin; and the seal disc is fixedly arranged on the support body. The scroll expander disclosed by the invention is simple in structure and reasonable in design; parts can be easily processed and manufactured; and aerodynamic performance of the scroll expander is effectively improved by a tooth profile of each scroll wrap and the reasonable design of air vents.
Description
Technical field
The present invention relates to a kind of scroll expander, particularly relate to the scroll expander that a kind of air inlet aperture is not covered by motion vortex tooth.
Background technology
In mini-organic Rankine bottoming cycle (micro-organicrankinecycle) system, as the decompressor of core component, need it can meet little flow, high expansion ratio, the requirement of the aspects such as volume, rotating speed are moderate, and scroll expander can meet above-mentioned requirements preferably, and paid close attention to widely in practical application and research and approved.
In scroll expander, the gaseous working medium with certain temperature and pressure enters the air feeding in center chamber of sound scroll wrap formation, gaseous working medium expansion work by inlet mouth, promotes dynamic vortex tooth to do revolution translation around static vortex tooth, drives crank rotation, exports shaft work. Power output can be carried out as primover of small power.
Due to the design of scroll expander scroll wrap, have employed screw compressor proven technique, its scroll wrap top takes type line correction (as PMP type line correction, symmetrical circular arc correction, circular arc add straight line correction), for compressor, this kind of correction can make sound scroll wrap realize engaging completely, increase the compression ratio of compressor, reduce clearance volume, but for scroll expander, dynamic vortex tooth can be made periodically to cover inlet mouth (such as, with reference to patent documentation 1) so that intake resistance increases, and reduces effciency of energy transfer.
Such as the design of single air outlet in Chinese patent application publication number CN101713300A so that the process that the gas terminated that expands is being discharged, the fricting resistance loss of dynamic vortex tooth can be increased, reduce scroll expander efficiency and power.
Summary of the invention
Based on above the deficiencies in the prior art, the present invention is in order to solve the above-mentioned problem mentioned, a kind of miniature organic Rankine bottoming cycle scroll expander is provided, this scroll expander can effectively avoid dynamic vortex tooth the periodicity in air-breathing aperture to be covered, and reduces the gas after having expanded to the friction resistance of dynamic vortex tooth.
In order to solve the problems of the technologies described above, the technical scheme of the present invention is: a kind of miniature organic Rankine bottoming cycle scroll expander, comprise quiet vortex housing, static vortex tooth, dynamic vortex tooth, cross slip ring, bent axle, sealing pad, support body, described quiet vortex housing and support body fixed seal connection, quiet vortex housing is built with static vortex tooth, dynamic vortex tooth, and static vortex tooth and dynamic vortex tooth plug together mutually, static vortex tooth back is fixedly connected with quiet vortex housing, dynamic vortex tooth back is connected cross slip ring by back chute, and cross slip ring is connected by two chutes on feather key and support body, realize the revolution translation of dynamic vortex tooth, described bent axle one end is connected with described dynamic vortex tooth by needle bearing, and middle part is connected with the thrust bearing being nested in sealing pad, and the other end is arranged on the steady bearing of support body, described bent axle upper end crankpin is furnished with a fan-shaped counterbalance weight, is used for the eccentric force of balanced dynamic scroll wrap and needle bearing and crankpin, described sealing pad is fixed on support body.
Described dynamic vortex tooth back is extended with the cylindrical trough that is used for assembling a needle bearing, it is empty that cylindrical trough top is provided with two back pressure gas circulations, back pressure hole has been offered in described dynamic vortex tooth center, and high pressure gas are entered in the back pressure cavity of sealing pad and dynamic vortex tooth formation by back pressure hole and circulation hole.
Described quiet vortex housing upper end is provided with an air inlet port, and sidewall is provided with two venting holes, and two venting holes are located at dynamic and static scroll wrap tooth tail place respectively.
The individual threaded hole of the pairing with static vortex tooth housing is offered at described static vortex tooth back; And position, described static vortex tooth center offers that run through with air inlet port that is described quiet vortex housing top same specification.
The accommodating hole placing thrust bearing is offered in the middle part of described sealing pad; Sealing pad is circumferentially evenly equipped with the heavy head thread hole being connected with described support body.
The boss face that described support body upper surface is provided with quiet vortex housing sealing groove circumferentially matches, support body bottom is provided with the cylindrical trough placed and support crankbearing.
Compared with prior art, the technical scheme of the present invention has following useful effect: the scroll expander structure of the present invention is simple, is easy to processing and realizes, scroll wrap end type line is directly blocked correction, compared with traditional way, Initial Dilatation angle is passed backward, add the first expansion chamber volume. Inlet mouth does not cover by dynamic vortex tooth, reduces intake resistance, and the design of symmetrical air outlet reduces and is vented the friction resistance to dynamic vortex tooth.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of the miniature organic Rankine bottoming cycle scroll expander of the present invention;
Fig. 2 is the position relation schematic diagram of dynamic vortex tooth tooth head and air inlet port.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, a kind of miniature organic Rankine bottoming cycle scroll expander, comprises quiet vortex housing 1, static vortex tooth 2, dynamic vortex tooth 3, cross slip ring 4, bent axle 5, sealing pad 6, support body 7.
There are an air inlet port 111, four bolts hole being connected with static vortex tooth 12 quiet vortex housing 1 upper end. Sidewall has two venting holes 112, and venting hole 112 is located at dynamic and static scroll wrap tooth tail place respectively. Quiet vortex housing 1 is connected by bolt 13 with support body 7, and at contact surface place, quiet vortex housing 1 has offered gasket slot 113, and gasket slot 113 matches with the boss 712 of support body 7 to realize sealing, reduces the gas leakage entering in scroll expander expansion chamber.As shown in Figure 1, static vortex tooth 2 back is provided with four threaded holes, is connected with quiet vortex housing 1 by bolt, and is provided with air inlet port 211. Dynamic vortex tooth 3 and static vortex tooth 2 plug together mutually, back pressure hole 311 has been offered in dynamic vortex tooth 3 center, two chutes 313 are had at dynamic vortex tooth 3 back, it is used for coordinating with cross slip ring 4, it is extended with a cylindrical trough at dynamic vortex tooth 3 back, being used for assembling a needle bearing 31, be provided with two back pressure gases circulations empty 312 on cylindrical trough top, high pressure gas enter sealing pad 6 with the back pressure cavity 611 of dynamic vortex tooth 3 formation by back pressure hole 311 and circulation hole 312. Dynamic vortex tooth 3 is connected with bent axle 5 by needle bearing 31, is furnished with a fan-shaped counterbalance weight 51 on the crankpin of bent axle 5 upper end, is used for the eccentric force of balanced dynamic scroll wrap 3 and needle bearing 31 and crankpin. Bent axle 5 is connected with sealing pad 6 by thrust bearing 62, and sealing pad 6 is fixed on support body 7 by screw 61. Support body 7 is provided with 2 chutes 711 be used for the feather key 41 with cross slip ring 4 and match, under coordinate of cross slip ring 4 with chute 41, it is possible to realize the revolution translation of dynamic vortex tooth 3.
As shown in Figure 2, being the tooth head of scroll expander dynamic vortex tooth and the position relation schematic diagram of air inlet port of the preferred embodiment of the present invention, dynamic vortex tooth is in revolution translation process, and air inlet port is not had and covers by its tooth head all the time, reduces intake resistance loss.
The static vortex tooth 2 of the present invention and dynamic vortex tooth 3 are with phase differential 180 °, fixing eccentricity ground mode plugs together together, the gas with certain pressure and temperature entered by inlet mouth is expanded in the crescent gap that dynamic and static scroll wrap forms, dynamic vortex tooth 3 is promoted to do revolution translation, dynamic vortex tooth 3 transmits this kind of motion by excentric shaft, realize the output of power, for driving small-sized wasted work machinery.
The scroll expander scroll wrap part of the present invention, by changing the structure of top scroll molded line, it is achieved is not covered by inlet mouth in the moving process of dynamic vortex, effectively reduces the power loss of the gas entering in expansion chamber by inlet mouth. Arranging bi-directional venting hole, in minimizing exhaust process, gas is to the friction resistance of dynamic vortex tooth simultaneously. Effectively raise output rating and the isentropic efficiency of decompressor.
The scroll expander structure of the present invention is simple, and reasonable in design, the easy processing and manufacturing of parts, the appropriate design of scroll wrap profile of tooth and venting hole, effectively improves the aeroperformance of scroll expander.
Claims (6)
1. a miniature organic Rankine bottoming cycle scroll expander, comprise quiet vortex housing (1), static vortex tooth (2), dynamic vortex tooth (3), cross slip ring (4), bent axle (5), sealing pad (6), support body (7), it is characterized in that: described quiet vortex housing (1) and support body (7) fixed seal connection, quiet vortex housing (1) is built with static vortex tooth (2), dynamic vortex tooth (3), and static vortex tooth (2) plugs together mutually with dynamic vortex tooth (3), static vortex tooth (2) back is fixedly connected with quiet vortex housing (1), dynamic vortex tooth (3) back is connected cross slip ring (4) by back chute (313), and cross slip ring (4) is connected by feather key (41) and two chutes (711) on support body 7, realize the revolution translation of dynamic vortex tooth (3), described bent axle (5) one end is connected with described dynamic vortex tooth (3) by needle bearing (31), middle part is connected with the thrust bearing being nested in sealing pad (6), and the other end is arranged on the steady bearing of support body (7),Described bent axle (5) upper end crankpin is furnished with a fan-shaped counterbalance weight (51), is used for the eccentric force of balanced dynamic scroll wrap (3) and needle bearing (31) and crankpin; Described sealing pad (6) is fixed on support body (7).
2. miniature organic Rankine bottoming cycle scroll expander according to claim 1, it is characterized in that: described dynamic vortex tooth (3) back is extended with the cylindrical trough that is used for assembling a needle bearing (31), cylindrical trough top is provided with two back pressure gas circulations empty (312), back pressure hole (311) has been offered in described dynamic vortex tooth (3) center, and high pressure gas are entered in the back pressure cavity (611) that sealing pad (6) and dynamic vortex tooth (3) are formed by back pressure hole (311) and circulation hole (312).
3. miniature organic Rankine bottoming cycle scroll expander according to claim 1, it is characterized in that: described quiet vortex housing (1) upper end is provided with an air inlet port (111), sidewall is provided with two venting holes (112), and two venting holes (112) are located at dynamic and static scroll wrap tooth tail place respectively.
4. miniature organic Rankine bottoming cycle scroll expander according to claim 1, it is characterised in that: four threaded holes of the pairing with static vortex tooth housing (1) are offered at described static vortex tooth (2) back; And described static vortex tooth (2) position, center offers that run through with air inlet port (211) that is described quiet vortex housing (1) top same specification.
5. miniature organic Rankine bottoming cycle scroll expander according to claim 1, it is characterised in that: the accommodating hole of placement thrust bearing (62) is offered at described sealing pad (6) middle part; The heavy head thread hole that sealing pad (6) is circumferentially evenly equipped with described support body (7) is connected.
6. miniature organic Rankine bottoming cycle scroll expander according to claim 1, it is characterized in that: the boss face that described support body (7) upper surface is provided with quiet vortex housing (1) sealing groove circumferentially matches, support body (7) bottom is provided with the cylindrical trough placed and support crankbearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610033139.5A CN105673082B (en) | 2016-01-19 | 2016-01-19 | Miniature organic Rankine bottoming cycle scroll expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610033139.5A CN105673082B (en) | 2016-01-19 | 2016-01-19 | Miniature organic Rankine bottoming cycle scroll expander |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105673082A true CN105673082A (en) | 2016-06-15 |
| CN105673082B CN105673082B (en) | 2018-01-26 |
Family
ID=56301434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610033139.5A Expired - Fee Related CN105673082B (en) | 2016-01-19 | 2016-01-19 | Miniature organic Rankine bottoming cycle scroll expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105673082B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150415A (en) * | 2017-12-29 | 2018-06-12 | 合肥通用机械研究院 | A kind of volume variable screw compressor |
| CN108386354A (en) * | 2018-03-23 | 2018-08-10 | 合肥通用机械研究院有限公司 | A kind of high temperature heat pump compressor of Double pump body structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08312551A (en) * | 1996-07-01 | 1996-11-26 | Matsushita Electric Ind Co Ltd | Scroll compressor |
| CN101216035A (en) * | 2008-01-04 | 2008-07-09 | 美的集团有限公司 | Scroll compressor and control method thereof |
| CN101713300A (en) * | 2005-04-28 | 2010-05-26 | 松下电器产业株式会社 | Scroll expander |
| CN201521444U (en) * | 2009-10-31 | 2010-07-07 | 广东正力精密机械有限公司 | Whirl air compressor for changing support structure of movable disc |
-
2016
- 2016-01-19 CN CN201610033139.5A patent/CN105673082B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08312551A (en) * | 1996-07-01 | 1996-11-26 | Matsushita Electric Ind Co Ltd | Scroll compressor |
| CN101713300A (en) * | 2005-04-28 | 2010-05-26 | 松下电器产业株式会社 | Scroll expander |
| CN101216035A (en) * | 2008-01-04 | 2008-07-09 | 美的集团有限公司 | Scroll compressor and control method thereof |
| CN201521444U (en) * | 2009-10-31 | 2010-07-07 | 广东正力精密机械有限公司 | Whirl air compressor for changing support structure of movable disc |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150415A (en) * | 2017-12-29 | 2018-06-12 | 合肥通用机械研究院 | A kind of volume variable screw compressor |
| CN108386354A (en) * | 2018-03-23 | 2018-08-10 | 合肥通用机械研究院有限公司 | A kind of high temperature heat pump compressor of Double pump body structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105673082B (en) | 2018-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6244240B1 (en) | Rotary positive-displacement scavenging device for rotary vane pumping machine | |
| CN109339940B (en) | Flow guiding type rotor internal combustion engine between rotor and stator | |
| CN201013589Y (en) | Conical double helical lobe compressor actuating devive | |
| US7421986B2 (en) | Rotary radial internal combustion piston engine | |
| CN105673082A (en) | Scroll expander for micro-organic rankine cycle | |
| US3782107A (en) | Air-cooled rotary internal combustion engine | |
| CN102410221B (en) | Double-cylinder rotary compressor | |
| JPH0494423A (en) | Rotary engine | |
| WO2005124105A1 (en) | Rotary machine and internal combustion engine | |
| CN104564161A (en) | Sliding vane type expansion working machine | |
| CN103498727A (en) | Vane type engine | |
| CN101818665B (en) | Rotary volume-variable expansion compression engine | |
| CN102926816A (en) | Vacuum cycloid vane motor | |
| CN203515678U (en) | Vane type energy conversion device | |
| CN203515794U (en) | Vane engine | |
| CN113374573A (en) | Circumferential flow turbine | |
| CN109236461B (en) | Flow guiding type rotor internal combustion engine between rotor and stator | |
| CN108194357B (en) | A kind of sliding-vane compressor that cylinder is rotated with rotor | |
| CN113027760A (en) | Shaft type fixed piston for air compressor and air compressor with same | |
| CN207500112U (en) | A kind of twin-stage scroll compressor with pressure difference oil supply structure | |
| US3753631A (en) | Piston machine | |
| CN106121730B (en) | A kind of blade aerodynamic machine | |
| CN103527252A (en) | Vane type energy conversion device | |
| CN110307078A (en) | Energy conversion device and rotary engine based on fluid displacement variation | |
| CN221299312U (en) | Single-vane rotary internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180126 Termination date: 20210119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |