CN104848576B - Thermally-driven stirling cryocooler - Google Patents
Thermally-driven stirling cryocooler Download PDFInfo
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- CN104848576B CN104848576B CN201510218084.0A CN201510218084A CN104848576B CN 104848576 B CN104848576 B CN 104848576B CN 201510218084 A CN201510218084 A CN 201510218084A CN 104848576 B CN104848576 B CN 104848576B
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- heat exchanger
- piston
- room temperature
- cavity
- thermal drivers
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/0435—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines the engine being of the free piston type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention relates to the field of a refrigerator, and discloses a thermally-driven stirling cryocooler. The thermally-driven stirling cryocooler comprises an engine, a refrigerator, a discharger and a harmonic oscillator; the engine comprises a hot end heat exchanger, a first heat accumulator and a first room temperature heat exchanger which are sequentially connected; the refrigerator comprises a second room temperature heat exchanger, a second heat accumulator and a cold end heat exchanger which are sequentially arranged, wherein the engine is internally provided with a first thermal buffering cavity, the refrigerator is internally provided with a second thermal buffering cavity, the upper end of the first thermal buffering cavity is connected with the hot end heat exchanger, and the lower end of the first thermal buffering cavity is connected with the first room temperature heat exchanger; the lower end of the second thermal buffering cavity is connected with the cold end heat exchanger, and the upper end of the second thermal buffering cavity is connected with the second room temperature heat exchanger; the engine and the refrigerator are relatively arranged up and down, a shared cavity is formed between the engine and the refrigerator, and the discharger and the harmonic oscillator are both arranged in the cavity in a contraposition way. The discharger provided by the invention can be operated at the room temperature end, the design and processing difficulty of the discharger can be reduced, and the vibration of the system can be reduced.
Description
Technical field
The present invention relates to refrigeration machine technical field, more particularly to a kind of thermal drivers sterlin refrigerator.
Background technology
The Cryo Refrigerator of thermal drivers has extraordinary application prospect in the occasion that electric energy lacks.For example, China day
Although so gas reserves enrich very much, major part belongs to the Unconventional gas such as coal bed gas, shale gas, usual source of the gas distribution dissipates,
Tolerance is less, place is remote, and traditional pipeline transportation or electrically driven (operated) large-scale liquefaction device cannot be used, therefore these natural gass
Utilization be limited by very large.
Fig. 1 is traditional thermal drivers sterlin refrigerator structure, and it mainly includes Stirling engine, sterlin refrigerator
With the part of harmonic oscillator three, harmonic oscillator is positioned between the electromotor and refrigeration machine.When the hot end heat exchanger 3 of electromotor is heated,
When first room temperature heat exchanger 1 is cooled down, in the first regenerator 2 certain thermograde will be formed, when the gradient reach it is certain
During value, system will produce self-oscillation, convert heat into the mechanical energy of sound wave form, promote (the harmonic oscillator 6 of harmonic oscillator 6
In cavity 5 between electromotor and refrigeration machine) move back and forth, sound work(is passed into into sterlin refrigerator；CETRINE
When being driven by sound work(, sound work(carries out heat carrying to refrigeration machine in the second regenerator 2 ', obtains in cool end heat exchanger 3 '
Low temperature is obtained, mechanical energy is converted into into heat energy.
There is displacer 4 within the engine, its one end is connected with hot end heat exchanger 3, is in the condition of high temperature, to described
The material of the displacer 4 of motivation proposes requirements at the higher level, easily affects the service life of the displacer 4 of the electromotor, another
End is then located at indoor temperature end, also needs to adopt clearance seal between the internal face of the regenerator 2 of displacer 4 and first of electromotor, because
The Design and Machining difficulty of this electromotor displacer 4 is very big.Similarly, the end of displacer 4 ' of refrigeration machine at low temperature, separately
One end is then held positioned at the second room temperature heat exchanger 1 ', there is also clearance seal, and design and difficulty of processing are very big.The fortune discharged in addition
It is dynamic also to cause system vibration, it is unfavorable for practical application.
The content of the invention
(1) technical problem to be solved
It is an object of the invention to provide a kind of little thermal drivers sterlin refrigerator of vibration, makes the row of electromotor and refrigeration machine
Go out device and be operated in indoor temperature end, reduce design and the difficulty of processing of displacer.
(2) technical scheme
In order to solve above-mentioned technical problem, the present invention provides a kind of thermal drivers sterlin refrigerator, including electromotor, refrigeration
Machine, displacer and harmonic oscillator, the electromotor includes hot end heat exchanger, the first regenerator and first being sequentially connected from top to bottom
Room temperature heat exchanger, the refrigeration machine includes that the second room temperature heat exchanger, the second regenerator and the cold end that are sequentially connected from top to bottom are changed
Hot device, is provided with the first heat buffering cavity room in the electromotor, the second heat buffering cavity room is provided with the refrigeration machine, and described first is hot
The upper end of buffer chamber is connected with the hot end heat exchanger, and its lower end is connected with the first room temperature heat exchanger；The second heat buffering
The lower end of chamber is connected with the cool end heat exchanger, and its upper end is connected with the second room temperature heat exchanger；The electromotor and refrigeration machine
It is oppositely arranged and is provided between the two shared cavity up and down, during the displacer and harmonic oscillator are to being arranged in the cavity,
The harmonic oscillator is located at the both sides of the displacer.
Wherein, the first heat buffering cavity room is coaxially disposed with first regenerator, the first heat buffering cavity room
Upper/lower terminal is equipped with laminarization element；The second heat buffering cavity room is coaxially disposed with second regenerator, and described second
The upper/lower terminal of heat buffering cavity room is equipped with laminarization element.
Preferably, the laminarization element is metal gauze.
Wherein, the displacer includes two first piston bodies being oppositely arranged, and two first piston bodies being capable of phase
To movement, the inner face of the first piston body and the laminarization element being adjacent are communicated, its outer face respectively with institute
State the first room temperature heat exchanger, the second room temperature heat exchanger to communicate.
Wherein, the harmonic oscillator includes two second piston bodies, and two second piston bodies are respectively arranged on described in two
The outer face both sides of first piston body, the end face of the second piston body and first piston body phase pair respectively with first room temperature
Heat exchanger, the second room temperature heat exchanger are communicated.
Wherein, it is located in the cavity on the outside of two first piston bodies and is respectively equipped with linear electric motors, the straight line
Motor includes stator, mover and piston, and the stator is fixedly connected with the inwall of cavity, and the piston is lived located at mover and first
The relative one end of cock body, the mover is used for band piston and moves reciprocatingly along the stator, and the mover and piston are used as institute
State harmonic oscillator.
Wherein, the first piston body has connecting rod, the second piston with one end level connection joint of second piston body phase pair
Body is provided through the central through hole of the connecting rod.
Wherein, the first piston body one end level connection joint relative with piston has connecting rod, and the piston is provided through institute
State the central through hole of connecting rod.
Wherein, the displacer includes two inertia tubes being oppositely arranged, the opening of the inertia tube and the cavity
Inwall be fixedly connected.
Wherein, the harmonic oscillator is two resonatrons being oppositely arranged, and the resonatron is located at the outside of the displacer.
(3) beneficial effect
Compared with prior art, the present invention has advantages below：
A kind of thermal drivers sterlin refrigerator that the present invention is provided, including electromotor, refrigeration machine, displacer and harmonic oscillator,
It adopts and be provided with the engine the first hot surge chamber, and the second heat buffering cavity room, the first heat buffering are provided with refrigeration machine
The upper end of chamber is connected with the hot end heat exchanger of electromotor, and its lower end is connected with the room temperature heat exchanger of electromotor, by described
The air-flow buffer effect of one heat buffering cavity room, to ensure that its lower end is in room temperature；The lower end of the second heat buffering cavity room and institute
The cool end heat exchanger for stating refrigeration machine is connected, and its upper end is connected with the room temperature heat exchanger of refrigeration machine, by second heat buffering cavity
The air-flow buffer effect of room, to ensure that its upper end is in room temperature；The electromotor and refrigeration machine are oppositely arranged up and down and both it
Between be provided with shared cavity, so as to ensure that the cavity be in room temperature state；The displacer and harmonic oscillator are to being arranged in
In the cavity, and then ensure that the displacer can be operated in indoor temperature end, thus reduce the design and processing of displacer
Difficulty；And using the opposite disposed vibration that can reduce system.
Description of the drawings
Fig. 1 is the structural representation of traditional thermal drivers sterlin refrigerator；
Fig. 2 is the structural representation of thermal drivers sterlin refrigerator embodiment one of the present invention；
Fig. 3 is the structural representation of thermal drivers sterlin refrigerator embodiment two of the present invention；
Fig. 4 is the structural representation of thermal drivers sterlin refrigerator embodiment three of the present invention；
Fig. 5 is the structural representation of thermal drivers sterlin refrigerator example IV of the present invention.
In figure：1：First room temperature heat exchanger；2：First regenerator；3：Hot end heat exchanger；4：The displacer of electromotor；5：It is empty
Chamber；6：Harmonic oscillator；7：Laminarization element；8：First heat buffering cavity room；9：First piston body；10：Second piston body；11：Connecting rod；
12：Stator；13：Mover；14：Piston；15：Inertia tube；16：Resonatron；1’：Second room temperature heat exchanger；2’：Second regenerator；
3’：Cool end heat exchanger；4’：The displacer of refrigeration machine；7’：Laminarization element；8’：Second heat buffering cavity room.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In describing the invention, it should be noted that term " " center ", " longitudinal direction ", " horizontal ", " on ", D score,
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " is
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicates or dark
Showing the device or element of indication must have specific orientation, with specific azimuth configuration and operation therefore it is not intended that right
The restriction of the present invention.Additionally, term " first ", " second ", " the 3rd " etc. be only used for describe purpose, and it is not intended that indicate or
Hint relative importance.
Embodiment one
As shown in Fig. 2 a kind of thermal drivers sterlin refrigerator provided for the present invention, including electromotor, refrigeration machine, discharge
Device and harmonic oscillator, the electromotor includes hot end heat exchanger 3, the first regenerator 2 and the first room temperature being sequentially connected from top to bottom
Heat exchanger 1, the refrigeration machine includes that the second room temperature heat exchanger 1 ' being sequentially connected from top to bottom, the second regenerator 2 ' and cold end are changed
Hot device 3 ', is provided with the first heat buffering cavity room 8 in the electromotor, the second heat buffering cavity room 8 ' is provided with the refrigeration machine, described
The upper end of the first heat buffering cavity room 8 is connected with the hot end heat exchanger 3, and its lower end is connected with the first room temperature heat exchanger 1, for inciting somebody to action
The condition of high temperature at the end of hot end heat exchanger 3 is transitioned into room temperature；The lower end of the second heat buffering cavity room 8 ' and the cool end heat exchanger
3 ' are connected, and its upper end is connected with the second room temperature heat exchanger 1 ', for the low temperature state that cool end heat exchanger 3 ' is held to be transitioned into into room temperature；
The electromotor and refrigeration machine are oppositely arranged up and down so that the first room temperature heat exchanger 1 and the phase of the second room temperature heat exchanger 1 '
To arranging and being provided between the two shared cavity 5, so as to ensure the cavity 5 in room temperature state, the displacer is harmonious
In the cavity 5, the harmonic oscillator is located at the both sides of the displacer to oscillator opposed (being oppositely arranged), such as institute in Fig. 2
Show, harmonic oscillator is respectively arranged on the outside of displacer；Thus the displacer can be operated in room temperature state, described so as to reduce
The design of displacer and difficulty of processing, manufacturing cost is also decreased；And, displacer and harmonic oscillator adopt opposite disposed,
It is able to vibration of cancelling out each other.
Further, the first heat buffering cavity room 8 can be by the room temperature heat exchanger 1 of first regenerator 2 and first
Hollow space is constituted, and further, the first heat buffering cavity room 8 is coaxially disposed with first regenerator 2, and described first is hot
The upper/lower terminal of buffer chamber 8 is equipped with laminarization element 7 so that gas circulation is uniform；The second heat buffering cavity room 8 ' by
The hollow space of second regenerator 2 ' and the second room temperature heat exchanger 1 ' is constituted, the second heat buffering cavity room 8 ' and described the
Two regenerators 2 ' are coaxially disposed, and the upper/lower terminal of the second heat buffering cavity room is equipped with laminarization element 7 ' so that gas stream
It is logical uniform.Preferably, the laminarization element 7 and 7 ' is metal gauze, is easy to manufacture, high- and low-temperature resistance.
Specifically, the displacer can include two first piston bodies 9 being vertically oppositely arranged, and two described first are lived
Cock body 9 can be symmetrical set with regard to the central axis of the cavity 5, and the first piston body 9 can be in the cavity 5
Level of relative is moved, and the inner face of the first piston body 9 and the laminarization element 7 being adjacent are communicated, its outer face
Communicate with the first room temperature heat exchanger, the second room temperature heat exchanger respectively；One little adjacent with first piston body 9 of the cavity 5
Part adopts contactless clearance seal equivalent to cylinder, between the first piston body 9 and cylinder, and the displacer is using right
Installing meter can cancel out each other vibration.
Wherein, the harmonic oscillator 6 can include two second piston bodies 10, and two second piston bodies 10 are respectively arranged on
The outer face both sides of two first piston bodies 9, the end face of the second piston body and first piston body phase pair respectively with institute
State the first room temperature heat exchanger, the second room temperature heat exchanger to communicate；Using between contactless between the second piston body 10 and cavity 5
Gap is sealed；The second piston body 10 can coordinate movement with the first piston body 9, to play phase modulation effect, the resonance
Son 6 can also be cancelled out each other vibration using opposed design, therefore the vibration of whole system can control very little.
Embodiment two
As shown in figure 4, the embodiment two is with the difference of embodiment one, the harmonic oscillator 6 can be replaced by linear electric motors,
Linear electric motors are respectively equipped with positioned at the outside of two first piston bodies 9 in the cavity 5, the linear electric motors include stator
12nd, mover 13 and piston 14, the stator 12 is fixedly connected with the inwall of cavity 5, and the piston 14 is located at mover 13 and first
The relative one end of piston body 9, the mover 13 is used for band piston 14 and moves reciprocatingly along the stator 12, the He of the mover 13
Piston 14 can serve as the harmonic oscillator 6；The harmonic oscillator 6 externally exports electric energy with the action of a magnetic field simultaneously in motion, therefore
In the present embodiment, system can outwards export electric energy and cold energy simultaneously, and this is very with practical value to the occasion that electric power lacks.
Embodiment three
As shown in figure 3, the embodiment three is with the difference of embodiment one and two, the first piston body 9 and second is lived
The relative one end of cock body 10 or piston 14 can have connecting rod 11 with level connection joint, and the second piston body 10 or piston 14 are provided through
The central through hole of the connecting rod 11, connecting rod 11 passes through central through hole, so, first piston body 9 and second piston body 10 or living
The area for filling in 14 two ends is different, contributes to reducing supporting second piston body 10 or piston 14 to move back and forth the firm of required spring
Degree.
Example IV
As shown in figure 5, the example IV is with the difference of above-described embodiment, the displacer can include two relatively
The inertia tube 15 of setting, the inertia tube 15 is preferably symmetrical arranged with regard to the central axis of the cavity 5, the inertia tube 15
Opening is fixedly connected with the inwall of the cavity 5, different according to the gas encapsulated in the inertia tube 15, the inertia tube 15
Length be generally less than a quarter correspondence gas wavelength.
The harmonic oscillator 6 can be two resonatrons 16 being oppositely arranged, and the resonatron 16 is located at the displacer
Outside, the resonatron 16 is symmetrical arranged with regard to the central axis of the cavity 5；The length of the resonatron 16 is about wavelength
A quarter is between 1/2nd；If connecting an air reservoir in the end of resonatron 16, the length of resonatron 16 is less than
Quarter-wave.
As can be seen from the above embodiments, the present invention can make displacer be operated in room temperature state, reduce setting for displacer
Meter difficulty and manufacturing cost, and the vibration of whole system is reduced, have broad application prospects.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of thermal drivers sterlin refrigerator, including electromotor, refrigeration machine, displacer and harmonic oscillator, the electromotor includes
Hot end heat exchanger, the first regenerator and the first room temperature heat exchanger being sequentially connected from top to bottom, the refrigeration machine include on to
Under the second room temperature heat exchanger, the second regenerator and the cool end heat exchanger that are sequentially connected, it is characterised in that be provided with the electromotor
First heat buffering cavity room, is provided with the second heat buffering cavity room in the refrigeration machine, the upper end of the first heat buffering cavity room with it is described
Hot end heat exchanger is connected, and its lower end is connected with the first room temperature heat exchanger；The lower end of the second heat buffering cavity room and the cold end
Heat exchanger is connected, and its upper end is connected with the second room temperature heat exchanger；The electromotor and refrigeration machine are oppositely arranged up and down and both it
Between be provided with shared cavity, during the displacer and harmonic oscillator are to being arranged in the cavity, the harmonic oscillator is located at the row
Go out the both sides of device.
2. thermal drivers sterlin refrigerator as claimed in claim 1, it is characterised in that the first heat buffering cavity room with it is described
First regenerator is coaxially disposed, and the upper/lower terminal of the first heat buffering cavity room is equipped with laminarization element；Second heat is slow
Rush chamber to be coaxially disposed with second regenerator, the upper/lower terminal of the second heat buffering cavity room is equipped with laminarization element.
3. thermal drivers sterlin refrigerator as claimed in claim 2, it is characterised in that the laminarization element is tinsel
Net.
4. thermal drivers sterlin refrigerator as claimed in claim 3, it is characterised in that the displacer includes that two relative set
The first piston body put, two first piston bodies can relative movement, the inner face of the first piston body and with its phase
The adjacent laminarization element is communicated, and its outer face communicates respectively with the first room temperature heat exchanger, the second room temperature heat exchanger.
5. thermal drivers sterlin refrigerator as claimed in claim 4, it is characterised in that the harmonic oscillator includes two second work
Cock body, two second piston bodies are respectively arranged on the outer face both sides of two first piston bodies, the second piston body
Communicate with the first room temperature heat exchanger, the second room temperature heat exchanger respectively with the end face of first piston body phase pair.
6. thermal drivers sterlin refrigerator as claimed in claim 4, it is characterised in that two described the are located in the cavity
Linear electric motors are respectively equipped with the outside of one piston body, the linear electric motors include stator, mover and piston, the stator and cavity
Inwall be fixedly connected, located at one end of mover and first piston body phase pair, the mover is used for band piston edge to the piston
The stator moves reciprocatingly, and the mover and piston are used as the harmonic oscillator.
7. thermal drivers sterlin refrigerator as claimed in claim 5, it is characterised in that the first piston body and second piston
One end level connection joint of body phase pair has connecting rod, and the second piston body is provided through the central through hole of the connecting rod.
8. thermal drivers sterlin refrigerator as claimed in claim 6, it is characterised in that the first piston body is relative with piston
One end level connection joint have connecting rod, the piston is provided through the central through hole of the connecting rod.
9. thermal drivers sterlin refrigerator as claimed in claim 1, it is characterised in that the displacer includes that two relative set
The inertia tube put, the opening of the inertia tube is fixedly connected with the inwall of the cavity.
10. thermal drivers sterlin refrigerator as claimed in claim 9, it is characterised in that the harmonic oscillator is two and relative sets
The resonatron put, the resonatron is located at the outside of the displacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510218084.0A CN104848576B (en) | 2015-04-30 | 2015-04-30 | Thermally-driven stirling cryocooler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510218084.0A CN104848576B (en) | 2015-04-30 | 2015-04-30 | Thermally-driven stirling cryocooler |
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| CN104848576B true CN104848576B (en) | 2017-04-19 |
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| CN111964047A (en) * | 2020-07-10 | 2020-11-20 | 宁波卓成化纤有限公司 | Low-temperature low-nitrogen combustion system with environmental protection and energy saving functions |
| CN113701391B (en) * | 2021-07-30 | 2022-06-07 | 湖南大学 | Regenerative device and operation method |
| 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 |
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| US4872313A (en) * | 1987-09-04 | 1989-10-10 | Mitsubishi Denki Kabushiki Kaisha | Gas cycle machine |
| US5406801A (en) * | 1992-10-29 | 1995-04-18 | Aisin Newhard Co., Ltd. | Thermally operated refrigerator |
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| CN104848576A (en) | 2015-08-19 |
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