CN1302249C - Oil lubrication thermally-driven Stering refrigeration system - Google Patents
Oil lubrication thermally-driven Stering refrigeration system Download PDFInfo
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- CN1302249C CN1302249C CNB2005100683466A CN200510068346A CN1302249C CN 1302249 C CN1302249 C CN 1302249C CN B2005100683466 A CNB2005100683466 A CN B2005100683466A CN 200510068346 A CN200510068346 A CN 200510068346A CN 1302249 C CN1302249 C CN 1302249C
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Abstract
The present invention relates to an oil lubricating thermal driving Stirling refrigerating system. The present invention adopts a Stirling engine to drive a Stirling refrigerating machine, and a piston and a heat exchanger, the piston and a heat regenerator are separated by elastic membranes. Compared with the prior art, moving elements in the system can be lubricated by lubricating oil which can not enter the heat exchanger and the heat regenerator. The overall system reduces the processing difficulty, prolongs the service life and ensures the work performance. Because the lubricating oil reduces the friction loss between a cylinder and the piston, the efficiency of the overall system is enhanced. In addition, heat energy is used as an energy resource, and therefore, the present invention is especially suitable for places where electric power is lacking but the heat energy is sufficient.
Description
Technical field
The invention belongs to refrigeration and cryogenic technique field, the heat that specifically relates to a kind of oil lubrication drives Stirling refrigerating system.
Background technology
Stirling engine is put forward in 1816 by Scotsman R.Stirling at first, and as shown in Figure 1, it mainly comprises high-temperature heat-exchanging 4, regenerator 3, room temperature heat exchanger 2, two pistons 29 and 291, bent wheel 35.Two pistons link together by certain transmission mechanism and bent wheel and the motion of two pistons has certain phase difference, working gas is moved back and forth between room temperature heat exchanger and high-temperature heat-exchanging by regenerator, with thermal power transfer is mechanical energy with sonic transmissions, keep the motion of piston, and by the outwards output of bent wheel.
The structure of sterlin refrigerator is similar to special woods engine, just high-temperature heat-exchanging 4 usefulness cool end heat exchangers 19 is replaced.To song wheel 35 input mechanical energy, bent wheel drives the motion that two pistons 29 and 291 are made a phase bit during work, allows working gas by regenerator 3 heat at cool end heat exchanger 19 places is transported to room temperature heat exchanger 2, produces refrigeration.
At present, it is shorter that the subject matter that Stirling engine or sterlin refrigerator exist is exactly the life-span, and difficulty of processing is big.Because heat exchanger and regenerator will have heat exchange effect preferably just must be able to not have lubricating oil to enter heat exchanger with working gas, they can not have oil simultaneously, otherwise flow resistance will increase greatly, therefore though moving component is adopted lubricating oil to be lubricated to be very mature technique, Stirling engine or refrigerating device inner can not adopt lubricating oil to be lubricated.So main employing dry friction or microgap sealing between shifter in engine or the refrigeration machine and the cylindrical wall.But adopt the dry friction meeting make the life-span reduce or material requirements very high, adopt the microgap sealing then to require high processing technology and assembly technology, therefore make the engine of Stirling or the use of refrigeration machine be subjected to very big restriction.
In addition, traditional sterlin refrigerator generally all needs to import mechanical power when working, and this is very inapplicable for occasion that electric power lacks.
Summary of the invention
The objective of the invention is to use the oil lubrication moving component, cause its life-span shorter, or material and processing technology are required height, and limited its defective of using widely in order to overcome existing Stirling engine or sterlin refrigerator; The very inapplicable defective of occasion that while also lacks for electric power for the sterlin refrigerator that overcomes the input mechanical power, thereby providing a kind of can adopt lubricating oil to be lubricated to Stirling-electric hybrid, simultaneously can stop lubricating oil to enter regenerator and heat exchanger again, and Stirling engine and sterlin refrigerator are combined, and the heat that drives the oil lubrication of sterlin refrigerator with Stirling engine drives Stirling refrigerating system.
The objective of the invention is to realize by the following technical solutions:
The heat of oil lubrication provided by the invention drives Stirling refrigerating system, be to adopt Stirling engine to drive sterlin refrigerator, as shown in Figure 2, this system mainly comprises: the merit transmission mechanism and an oil lubrication system of a Stirling engine, a sterlin refrigerator, connection Stirling engine and sterlin refrigerator.
Described Stirling engine comprises: first cylinder 10 of the ring-type that two ends are connected with crankcase 1, and be positioned at wherein the first piston 5 and second piston 8, the first piston 5 and second piston 8 seal by the inwall of the piston ring 9 and first cylinder 10, since second piston 8 second flexible sheet 23, the first room temperature heat exchanger 2, first regenerator 3, high-temperature heat-exchanging 4, first heat buffering cavity 6, the second room temperature heat exchanger 7, first flexible sheet 25 are installed successively in the counterclockwise direction in first cylinder 10;
Described sterlin refrigerator comprises: second cylinder 22 of the ring-type that two ends are connected with crankcase 1, and be positioned at wherein the 4th piston 15 and the 3rd piston 16, the 4th piston 15 and the 3rd piston 16 seal by the inwall of the piston ring 9 and second cylinder 22, since the 4th piston 15 the 4th flexible sheet 24, the 3rd room temperature heat exchanger 17, second regenerator 18, cool end heat exchanger 19, second heat buffering cavity 20, fourth ventricle temperature heat exchanger 21, the 3rd flexible sheet 26 are installed successively along clockwise direction in second cylinder 22;
The merit transmission mechanism of described connection Stirling engine and sterlin refrigerator comprises: the bent roller box 1 of a phase modulating mechanism, it is connected the motion phase of regulating piston with second piston 8, first piston 5, the 3rd piston 16, the 4th piston 15 respectively by second connecting rod 11, first connecting rod 12, third connecting rod 13, the 4th connecting rod 14;
Described oil lubrication system comprises: be contained in the lubricating oil in the bent roller box 1; Be communicated with the connecting pipe 31 between bent roller box and each cylinder and be installed in ducted oil pump 30, lubricating oil can be lubricated each piston, bent wheel, connecting rod.
Described flexible sheet is the diaphragm that elastomeric organic material or metal material make, described organic material is fluorubber, latex, natural rubber etc., described metal material then is beryllium-bronze, elastic stainless steel material etc., and the size of their thickness and diameter is designed according to the volume flow in cross section, place and the fatigue limit of elastomeric material.Usually, the material thickness of elastic membrane is between 0.3～5mm, and its diameter is then according to the displacement allowable of its elastic membrane gas motion displacement greater than this section.
Described heat buffering cavity is the thin-walled empty pipe of low thermal conductivity materials such as stainless steel, titanium alloy or pottery, and its wall thickness is generally about 1～3 times of the critical pressure-bearing thickness of pipe, usually between 0.1mm～5mm.
Described oil pump is a gear pump.
Second regenerator 18 that the heat of oil lubrication provided by the invention drives in the Stirling refrigerating system can also be further divided into two parts, less near cool end heat exchanger 19 section diameters, bigger away from cool end heat exchanger 19 section diameters, the other end that connects the 3rd heat buffering cavity 27, the 5th room temperature heat exchanger 28, the five room temperature heat exchangers 28 successively by pipe at the two link position is connected into the cylinder between the 3rd flexible sheet 26 and the fourth ventricle temperature heat exchanger 21 by pipeline.
The heat of oil lubrication provided by the invention is to import heat from high-temperature heat-exchanging to system when driving Stirling refrigerating system work, working gas is that mechanical energy promotes piston 5 and 8 motions with thermal power transfer, driving piston 15 and 16 motions by the transmission mechanism in connecting rod and the crankcase, 15,16 pistons become the motion at certain phase angle to make the interior working gas of refrigeration machine compression-expansion clocklike, produce low temperature at the cool end heat exchanger place.
Key of the present invention has been to use a kind of flexible sheet, can stop lubricating oil to enter heat exchanger and regenerator, can also assurance sound merit transmit in the both sides of film simultaneously, this diaphragm can strict separate the flow media of its both sides, has extraordinary elasticity simultaneously again.Because these flexible sheets generally are that just arranged long service life when room temperature, therefore in native system, between high-temperature heat-exchanging or cryogenic heat exchanger and flexible sheet, the room temperature heat exchanger has been installed, to guarantee high-temperature gas or the contact of cryogenic gas discord flexible sheet in use.In addition, cushion hot chamber in addition, form a hot buffering area that thermograde is arranged, make working gas when alternation flows, can not take heat or cold to the room temperature heat exchanger, cause energy loss at high-temperature heat-exchanging or cryogenic heat exchanger and room temperature heat exchanger.
The swept volume of piston has very big influence to the work of flexible sheet, if swept volume is bigger, the deflection of flexible sheet also can be bigger, sometimes even can exceed the scope of its strain, shortens its service life.The way that addresses this problem is exactly in the place that flexible sheet is installed, to enlarge the diameter of cylinder.The effective deformation area of flexible sheet will increase like this, and under same volume flow situation, its deflection will reduce, thereby plays the protective effect to diaphragm.In addition, flexible sheet also can be processed into various wave-likes, to increase its displacement.
The heat of oil lubrication provided by the invention drives Stirling refrigerating system and drives sterlin refrigerator with Stirling engine, and piston and heat exchanger, regenerator are separated with flexible sheet, compared with prior art, its advantage is: all moving components can adopt lubricating oil to be lubricated, but lubricating oil can not enter heat exchanger and regenerator, this makes the difficulty of processing of whole system reduce, and prolonged service life, and simultaneously service behaviour has has arrived guarantee; Simultaneously because lubricating oil has reduced frictional dissipation between cylinder-piston, therefore, whole system efficient also be improved; In addition, use heat energy, be particularly suitable for the place use that electric power lacks the heat energy abundance as the energy.
Description of drawings
Fig. 1 Fig. 1 is traditional Stirling engine (refrigeration machine) structural representation;
Fig. 2 is the structural representation that the heat of the oil lubrication of embodiment 1 drives Stirling refrigerating system;
Fig. 3 is the structural representation that the heat of the oil lubrication of embodiment 2 drives Stirling refrigerating system;
Wherein: 1 bent roller box, 2 first room temperature heat exchangers, 3 first regenerators, 4 high-temperature heat-exchangings, 5 first pistons, 6 first heat buffering cavities, 7 second room temperature heat exchangers, 8 second pistons, 9 piston rings, 10 first cylinders, 11 second connecting rods, 12 first connecting rods, 13 third connecting rods, 14 the 4th connecting rods, 15 the 4th pistons, 16 the 3rd pistons, 17 the 3rd room temperature heat exchangers, 18 second regenerators, 19 cool end heat exchangers, 20 second heat buffering cavities, 21 fourth ventricle temperature heat exchangers, 22 second cylinders, 23 second flexible sheets, 24 the 4th flexible sheets, 25 first flexible sheets, 26 the 3rd flexible sheets, 27 the 3rd heat buffering cavities, 28 the 5th room temperature heat exchangers, 291 pistons, 29 pistons, 30 oil pumps, 31 connecting pipes, 35 bent wheels.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Embodiment 1
The heat of oil lubrication provided by the invention drives Stirling refrigerating system, be to adopt Stirling engine to drive sterlin refrigerator, as shown in Figure 2, this system mainly comprises: the merit transmission mechanism and an oil lubrication system of a Stirling engine, a sterlin refrigerator, connection Stirling engine and sterlin refrigerator.
Described Stirling engine comprises: first cylinder 10 of the ring-type that two ends are connected with crankcase 1, and be positioned at wherein the first piston 5 and second piston 8, two pistons 5,8 seal by the inwall of piston ring 9 with cylinder 10, from piston 8 beginnings second flexible sheet 23, the first room temperature heat exchanger 2, first regenerator 3, high-temperature heat-exchanging 4, first heat buffering cavity 6, the second room temperature heat exchanger 7, first flexible sheet 25 are installed successively in the counterclockwise direction in the cylinder 10;
Described sterlin refrigerator comprises: second cylinder 22 of the ring-type that two ends are connected with crankcase 1, and be positioned at wherein the 4th piston 15 and the 3rd piston 16, two pistons 15,16 seal by the inwall of piston ring 9 with cylinder 22, from piston 15 beginnings the 4th flexible sheet 24, the 3rd room temperature heat exchanger 17, second regenerator 18, cool end heat exchanger 19, second heat buffering cavity 20, fourth ventricle temperature heat exchanger 21, the 3rd flexible sheet 26 are installed successively along clockwise direction in the cylinder 22;
The merit transmission mechanism of described connection Stirling engine and sterlin refrigerator comprises: the bent roller box 1 of a phase modulating mechanism, it is connected the motion phase of regulating piston respectively by second connecting rod 11, first connecting rod 12, third connecting rod 13, the 4th connecting rod 14 with piston 8,5,16,15;
Described oil lubrication system comprises: be contained in the lubricating oil in the bent roller box 1; Be communicated with the connecting pipe 31 between bent roller box and each cylinder and be installed in ducted gear pump 30, lubricating oil can be lubricated each piston, bent wheel, connecting rod.
All flexible sheets all adopt the thick silica gel thin film of 1mm, and the size of its diameter is designed according to the volume flow in cross section, place and the fatigue limit of elastomeric material, and according to the displacement allowable of its elastic membrane gas motion displacement greater than this section.
Described heat buffering cavity is stainless thin-walled empty pipe, and its wall thickness is generally about 1～3 times of the critical pressure-bearing thickness of pipe, usually between 0.1mm～5mm.
Import heat at heater 5 places to system during system works, the working gas in the cylinder 10 transfers heat energy to mechanical energy, promotes piston 5,8 motions, and at process connecting rod 11,12, bent roller box and connecting rod 13,14 pass to piston 15,16 with energy.Piston 15 and 16 motion order about that working gas are transported to room temperature heat exchanger 17 with heat from cryogenic heat exchanger 19 in the cylinder 22, thereby reach the effect of refrigeration.
Can see that the lubricating oil in the crankcase can enter into the piston place, but all blocked and can not enter heat exchanger and regenerator by flexible sheet.And flexible sheet can not hinder the transmission of pressure wave with the reciprocating motion of working gas, so can not reduce the service behaviour of system.On the contrary, because lubricating oil reduces the reduction of frictional dissipation between cylinder-piston, also can the efficient of machine system be increased.
The structure of present embodiment as shown in Figure 3, the structure of the structure of present embodiment and embodiment 1 is similar substantially, operation principle is also identical.But regenerator 18 has been divided into two parts, regenerator section diameter ratio near room temperature heat exchanger 17 is little away from the regenerator section diameter of room temperature heat exchanger 17, connected heat buffering cavity 27 and room temperature heat exchanger 28 successively in the joint of the two, the other end of room temperature heat exchanger 28 is communicated with cylinder between room temperature heat exchanger 21 and the flexible sheet 26.The structure of the relative embodiment 1 of such structure can obtain lower cryogenic temperature usually.
Claims (8)
1, a kind of heat of oil lubrication drives Stirling refrigerating system, be to adopt Stirling engine to drive sterlin refrigerator, this system mainly comprises: the merit transmission mechanism and an oil lubrication system of a Stirling engine, a sterlin refrigerator, connection Stirling engine and sterlin refrigerator is characterized in that:
Described Stirling engine comprises: first cylinder (10) of the ring-type that two ends are connected with crankcase (1), and be positioned at wherein first piston (5) and second piston (8), first piston (5) and second piston (8) seal by the inwall of piston ring (9) with first cylinder (10), since second piston (8) second flexible sheet (23) are installed successively in the counterclockwise direction in first cylinder (10), the first room temperature heat exchanger (2), first regenerator (3), high-temperature heat-exchanging (4), first heat buffering cavity (6), the second room temperature heat exchanger (7), first flexible sheet (25);
Described sterlin refrigerator comprises: second cylinder (22) of the ring-type that two ends are connected with crankcase (1), and be positioned at wherein the 4th piston (15) and the 3rd piston (16), the 4th piston (15) and the 3rd piston (16) seal by the inwall of piston ring (9) with second cylinder (22), since the 4th piston (15) the 4th flexible sheet (24) are installed successively along clockwise direction in second cylinder (22), the 3rd room temperature heat exchanger (17), second regenerator (18), cool end heat exchanger (19), second heat buffering cavity (20), fourth ventricle temperature heat exchanger (21), the 3rd flexible sheet (26);
The merit transmission mechanism of described connection Stirling engine and sterlin refrigerator comprises: the bent roller box (1) of a phase modulating mechanism, it is connected the motion phase of regulating piston with second piston (8), first piston (5), the 3rd piston (16), the 4th piston (15) respectively by second connecting rod (11), first connecting rod (12), third connecting rod (13), the 4th connecting rod (14);
Described oil lubrication system comprises: be contained in the lubricating oil in the bent roller box (1); Be communicated with the connecting pipe (31) between bent roller box and each cylinder and be installed in ducted oil pump (30), lubricating oil is lubricated each piston, bent wheel, connecting rod.
2, the heat of oil lubrication as claimed in claim 1 drives Stirling refrigerating system, and it is characterized in that: described flexible sheet is the diaphragm that elastomeric organic material or metal material make.
3, the heat of oil lubrication as claimed in claim 1 or 2 drives Stirling refrigerating system, and it is characterized in that: described flexible sheet is the diaphragm that fluorubber, latex or natural rubber make.
4, the heat of oil lubrication as claimed in claim 1 or 2 drives Stirling refrigerating system, and it is characterized in that: described flexible sheet is the diaphragm that beryllium-bronze or stainless steel material make.
5, the heat of oil lubrication as claimed in claim 1 drives Stirling refrigerating system, and it is characterized in that: described heat buffering cavity is the thin-walled empty pipe that low thermal conductivity material makes.
6, the heat of oil lubrication as claimed in claim 5 drives Stirling refrigerating system, it is characterized in that: described heat buffering cavity is the thin-walled empty pipe that stainless steel, titanium alloy or pottery make.
7, the heat of oil lubrication as claimed in claim 1 drives Stirling refrigerating system, and it is characterized in that: described oil pump is a gear pump.
8, the heat of oil lubrication as claimed in claim 1 drives Stirling refrigerating system, it is characterized in that: described second regenerator (18) is further divided into two parts, less near cool end heat exchanger (19) section diameter, bigger away from cool end heat exchanger (19) section diameter, link position at the two connects the 3rd heat buffering cavity (27), the 5th room temperature heat exchanger (28) successively by pipe, and the other end of the 5th room temperature heat exchanger (28) is connected into cylinder between the 3rd flexible sheet (26) and the fourth ventricle temperature heat exchanger (21) by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100683466A CN1302249C (en) | 2005-05-08 | 2005-05-08 | Oil lubrication thermally-driven Stering refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100683466A CN1302249C (en) | 2005-05-08 | 2005-05-08 | Oil lubrication thermally-driven Stering refrigeration system |
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| Publication Number | Publication Date |
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| CN1670451A CN1670451A (en) | 2005-09-21 |
| CN1302249C true CN1302249C (en) | 2007-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100683466A Expired - Fee Related CN1302249C (en) | 2005-05-08 | 2005-05-08 | Oil lubrication thermally-driven Stering refrigeration system |
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Families Citing this family (9)
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| CN102506513B (en) * | 2011-11-09 | 2014-12-10 | 浙江大学 | Stirling pulse tube refrigerator connected with displacer |
| CN103147949B (en) * | 2011-12-06 | 2015-02-04 | 中国科学院理化技术研究所 | Thermo-acoustic double-acting oil lubrication power generation system |
| AU2016238521A1 (en) * | 2015-03-25 | 2017-10-12 | Sun Orbit Gmbh | Stirling engine and method of using a stirling engine |
| CN104848576B (en) * | 2015-04-30 | 2017-04-19 | 中国科学院理化技术研究所 | Thermally-driven stirling cryocooler |
| CN104848577A (en) * | 2015-04-30 | 2015-08-19 | 中国科学院理化技术研究所 | Thermally-driven low temperature refrigerating machine |
| CN106500384B (en) * | 2016-10-28 | 2019-06-28 | 中国科学院理化技术研究所 | Thermal drivers sterlin refrigerator |
| CN107560227B (en) * | 2017-10-09 | 2019-12-17 | 中国科学院理化技术研究所 | Thermally-driven Stirling heat pump |
| CN111207529B (en) * | 2020-01-15 | 2021-04-13 | 浙江大学 | Free piston engine direct drive's cryocooler |
| CN115435505A (en) * | 2022-08-03 | 2022-12-06 | 湖南大学重庆研究院 | Thermal driving Stirling device for adjusting pressure based on elastic device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1188849A (en) * | 1996-11-15 | 1998-07-29 | 三洋电机株式会社 | Stirling circulation engine |
| JPH10238878A (en) * | 1997-02-27 | 1998-09-08 | Sanyo Electric Co Ltd | Gas compression/expansion machine |
| JPH1163705A (en) * | 1997-08-22 | 1999-03-05 | Sanyo Electric Co Ltd | Gas compression/expansion apparatus |
| JP2002303464A (en) * | 2001-03-30 | 2002-10-18 | Sanyo Electric Co Ltd | Stirling refrigerating machine |
| JP2003035464A (en) * | 2001-07-23 | 2003-02-07 | Sanyo Electric Co Ltd | Stirling refrigerator |
| JP2003042579A (en) * | 2001-07-24 | 2003-02-13 | Sanyo Electric Co Ltd | Oil seal bellows for stirling refrigerator |
-
2005
- 2005-05-08 CN CNB2005100683466A patent/CN1302249C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1188849A (en) * | 1996-11-15 | 1998-07-29 | 三洋电机株式会社 | Stirling circulation engine |
| JPH10238878A (en) * | 1997-02-27 | 1998-09-08 | Sanyo Electric Co Ltd | Gas compression/expansion machine |
| JPH1163705A (en) * | 1997-08-22 | 1999-03-05 | Sanyo Electric Co Ltd | Gas compression/expansion apparatus |
| JP2002303464A (en) * | 2001-03-30 | 2002-10-18 | Sanyo Electric Co Ltd | Stirling refrigerating machine |
| JP2003035464A (en) * | 2001-07-23 | 2003-02-07 | Sanyo Electric Co Ltd | Stirling refrigerator |
| JP2003042579A (en) * | 2001-07-24 | 2003-02-13 | Sanyo Electric Co Ltd | Oil seal bellows for stirling refrigerator |
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| CN1670451A (en) | 2005-09-21 |
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Granted publication date: 20070228 Termination date: 20120508 |