CN202229459U - Refrigerating system driven by thermoacoustic compressor - Google Patents
Refrigerating system driven by thermoacoustic compressor Download PDFInfo
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- CN202229459U CN202229459U CN2011203319608U CN201120331960U CN202229459U CN 202229459 U CN202229459 U CN 202229459U CN 2011203319608 U CN2011203319608 U CN 2011203319608U CN 201120331960 U CN201120331960 U CN 201120331960U CN 202229459 U CN202229459 U CN 202229459U
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Abstract
The utility model discloses a refrigerating system driven by a thermoacoustic compressor, which comprises the thermoacoustic compressor, a time sequence control valve and a refrigerator. An air distribution opening E of the time sequence control valve is connected with an air distribution opening F of the refrigerator, a high pressure air inlet C of the time sequence control valve is connected with a high pressure exhaust opening A of the thermoacoustic compressor, and a lower pressure exhaust opening D of the time sequence control valve is connected with a low pressure air inlet B of the thermoacoustic compressor. The thermoacoustic compressor comprises an N-grade thermoacoustic compressor unit connected through a one-way flow control valve in series, and N ranges from 2 to 100. The thermoacoustic compressor unit can be a standing wave thermoacoustic compressor, a pure travelling wave thermoacoustic compressor or a travelling wave and standing wave mixed thermoacoustic compressor. The refrigerator is a G-M refrigerator or a G-M type vessel refrigerator, and the time sequence control valve is a plane rotation valve or an electromagnetic control valve. The refrigerating system driven by the thermoacoustic compressor directly adopts heat drive, does not need electric energy, is completely free of oil lubrication, simple in structure, reliable in operation and low in investment and maintaining cost.
Description
Technical field
The utility model relates to cryogenic refrigerating system, relates in particular to the refrigeration system that a kind of thermoacoustic compressor drives.
Background technology
The G-M refrigeration machine is to develop comparatively ripe a kind of regenerating type low-temperature refrigerator, mainly partly is made up of regenerator, expansion cylinder, displacer, level aftercooler, cool end heat exchanger etc.The G-M refrigeration machine adopts common cooling standard compression machine to drive, and covers swell refrigeration through come periodically to realize the west by the gas distribution valve to phase bit work, and fields such as science and technology, medical science and low-temperature physic experiment have obtained to use widely in modern times.
Vascular refrigerator also is a kind of of regenerating type low-temperature refrigerator; Partly form by regenerator, vascular, hot end heat exchanger, level back heat exchanger, cool end heat exchanger and phase modulation apparatus etc.; Because of it has eliminated the displacer under the low temperature; The no maintenance operation time prolongs greatly, and prospect has a very wide range of applications at aspects such as space flight, military affairs.Vascular refrigerator is divided into stirling-type and G-M type again, wherein between compressor and vascular, adopts the pulse tube cooling system of valve distribution to be called G-M type vascular refrigerator.G-M type vascular refrigerator is realized refrigeration effect through the compression and the expansion process of gas in the opening and closing control vascular refrigerator of control high-low pressure end valve door, and operating frequency is generally below 10Hz.
Compressor is the power set in the refrigeration system; Traditional G-M refrigeration machine and G-M type vascular refrigerator all adopt mechanical commprssor to drive; Exist mechanical moving element in these mechanical commprssors invariably, structure comparatively complicacy and difficulty of processing is bigger, so the traditional mechanical compressor is owing to exist wearing and tearing; Be difficult to keep long-life failure-free operation, cost is high.In addition, the traditional mechanical compressor all can only utilize electric energy to drive, and lacks the occasion use at electric energy and is restricted.
The thermoacoustic compressor that this patent proposed is a kind of new gas compress mode of utilizing thermoacoustic effect work.Thermoacoustic effect is the phenomenon of changing each other between heat energy and the acoustic energy, i.e. time equal thermomechanical effect in the sound field.Thermoacoustic compressor is a kind of device that transforms to acoustic energy through thermoacoustic effect realization heat energy in essence.In the regenerator of thermoacoustic compressor or plate are folded; Gas working medium is in the solid dielectric lengthwise oscillations; With solid dielectric horizontal heat transmission takes place, heat is delivered to low-temperature end by gas working medium from temperature end after circulation of experience, and a part of heat energy is converted into acoustic energy.Different according to sound field characteristic, thermoacoustic compressor mainly is divided into three kinds of patterns of the capable ripple mixed type of standing wave type, travelling-wave type and standing wave type.Row wave sound field medium velocity ripple is identical with the pressure oscillation phase place, and the two differs 90 ° in standing-wave sound field.
Common thermoacoustic compressor, promptly thermoacoustic engine all can't be realized the continuous compression and the pumping of gas, thereby the gases at high pressure with steady pressure can not be provided.This also is an important difference of thermoacoustic compressor and mechanical compressor, and in decades, never the researcher proposed to utilize thermoacoustic compressor to realize continuous gas compression and pumping in the world, obtained high pressurized gas.The utility model utilizes the pressure oscillation and the unidirectional flow control valve that produce in the thermoacoustic compressor to propose a kind of multilevel heat acoustic compression system that gases at high pressure with steady pressure can be provided first; On this basis, thermoacoustic compressor just can provide the high-low pressure distribution to G-M refrigeration machine and G-M type vascular refrigerator through the SECO valve.
The cryogenic refrigerating system that the utility model proposes can be realized the function of the cryogenic refrigerating system that conventional mechanical commprssor drives; But because thermoacoustic compressor is different from conventional mechanical commprssor; It does not have mechanical moving element, has potential high efficiency, the servicing time simple in structure, reliable, no is long and the eco-friendly remarkable advantage of working medium, and can adopt heat energy to drive; Low-grade energies such as industrial waste heat capable of using, solar energy, it is especially suitable to lack occasion at electric energy.
Summary of the invention
The purpose of the utility model is the deficiency to prior art, has proposed the refrigeration system that a kind of thermoacoustic compressor drives.
The purpose of the utility model realizes through following technical scheme:
The refrigeration system that thermoacoustic compressor drives comprises thermoacoustic compressor, SECO valve and refrigeration machine; The air distribution port E of SECO valve is connected with the air distribution port F of refrigeration machine; SECO valve high pressure admission mouth C is connected with thermoacoustic compressor high-pressure exhaust A; SECO valve low pressure exhaust mouth D is connected with thermoacoustic compressor low-pressure admission mouth B; Described thermoacoustic compressor comprises that N is 2～100 through the N level thermoacoustic compressor unit of unidirectional flow control valve series connection.
Said thermoacoustic compressor unit is standing wave thermoacoustic compressor, pure capable ripple thermoacoustic compressor or row ripple standing wave mixed type thermoacoustic compressor.
Said refrigeration machine is G-M refrigeration machine or G-M type vascular refrigerator.Described SECO valve is plane rotating valve or solenoid electric valve.Described unidirectional flow control valve is check valve or the asymmetric injector of two-way flow resistance.
The utility model is through using unidirectional flow control valve; The thermoacoustic compressor unit is together in series from low pressure to high pressure; Utilize the pressure oscillation that produces in the thermoacoustic compressor unit; Realize the conveying of compression working medium from low pressure to high pressure, the high-low pressure of generation utilizes the high-low pressure source of the gas that the SECO valve switches as G-M refrigeration machine or G-M type vascular refrigerator to produce cryogenic refrigeration.G-M refrigeration machine or G-M type vascular refrigerator with respect to the driving of conventional mechanical formula compressibility; The refrigeration system that the thermoacoustic compressor that the utility model proposes drives directly adopts heat energy driving and generating low temperature; Broken away from of the dependence of traditional mechanical compressor, be particularly useful for the occasion that electric energy lacks electric energy; Secondly, because the cold and hot end of heat acoustic compression system does not all have mechanical moving component, therefore need not oil lubrication, not existing influences the oil pollution of refrigeration machine performance problem, and simple in structure, reliable, and investment and maintenance cost are low.
Description of drawings
Fig. 1 is the refrigeration system sketch map that thermoacoustic compressor drives;
Fig. 2 is a N level standing wave thermoacoustic compressor sketch map;
Fig. 3 is the pure capable ripple thermoacoustic compressor sketch map of N level;
Fig. 4 is a N level row ripple standing wave mixed type thermoacoustic compressor sketch map;
Fig. 5 is a G-M refrigeration machine sketch map;
Fig. 6 is a G-M type vascular refrigerator sketch map.
Among the figure, air reservoir 1, resonatron 2, cooler 3, heat sound plate are folded 4, heater 5, unidirectional flow control valve 6, primary cooler 7, thermal acoustic regenerator 8, thermal buffer tube 9, inferior cooler 10, backfeed loop 11, resonance straight-path 12, level aftercooler 13, low temperature regenerator 14, cool end heat exchanger 15, vascular 16, hot end heat exchanger 17, aperture valve 18, vascular air reservoir 19, displacer 20, expansion cylinder 21, SECO valve 22.
The specific embodiment
Shown in Fig. 1～4, the refrigeration system that thermoacoustic compressor drives comprises thermoacoustic compressor, SECO valve and refrigeration machine; The air distribution port E of SECO valve is connected with the air distribution port F of refrigeration machine; SECO valve high pressure admission mouth C is connected with thermoacoustic compressor high-pressure exhaust A; SECO valve low pressure exhaust mouth D is connected with thermoacoustic compressor low-pressure admission mouth B; Described thermoacoustic compressor comprises that N is 2～100 through the N level thermoacoustic compressor unit of unidirectional flow control valve series connection.
Said thermoacoustic compressor unit is standing wave thermoacoustic compressor, pure capable ripple thermoacoustic compressor or row ripple standing wave mixed type thermoacoustic compressor.
Thermoacoustic compressor among Fig. 2 is made up of N level standing wave thermoacoustic compressor and inter-stage unidirectional flow control valve 6, and the standing wave thermoacoustic compressor mainly is made up of air reservoir 1, resonatron 2, cooler 3, heat sound plate folded 4 and heater 5.First order thermoacoustic compressor, second level thermoacoustic compressor ... The average pressure of n level thermoacoustic compressor is that increase step by step and the average pressure of thermoacoustic compressors at different levels keeps constant when the refrigeration system steady operation.Pass through unidirectional flow control valve 6 arranged in series between the thermoacoustic compressors at different levels successively.Unidirectional flow control valve 6 has guaranteed that air-flow can only unidirectionally flow into first order thermoacoustic compressor, second level thermoacoustic compressor from low-pressure admission mouth B successively ... N level thermoacoustic compressor finally is pumped to the high pressure gas outlet A that flows out thermoacoustic compressor behind the high pressure.Unidirectional flow control valve 6 can be conventional unidirectional flow control valve, the asymmetric injector of also two-way flow resistance.When multistage standing wave thermoacoustic compressor is worked; Gas pressure in the first order standing wave thermoacoustic compressor near average pressure with sinusoidal fluctuation; When pressure and the pressure differential that is lower than low-pressure admission mouth B when first order standing wave thermoacoustic compressor internal pressure surpassed the threshold values pressure reduction of unidirectional flow control valve 6, gas just was inhaled into first order standing wave thermoacoustic compressor.Equally; Also be provided with unidirectional flow control valve 6 between first order standing wave thermoacoustic compressor and second level standing wave thermoacoustic compressor; Pressure in first order standing wave thermoacoustic compressor is because pressure oscillation is higher than second level thermoacoustic compressor; Gas just extrudes from first order standing wave thermoacoustic compressor, gets into second level standing wave thermoacoustic compressor.Be equipped with unidirectional flow control valve 6 between the hiigh pressure stage standing wave thermoacoustic compressor that low-pressure stage standing wave thermoacoustic compressor after this is adjacent, the course of work is with above identical.In standing wave thermoacoustic compressor at different levels, the optimum position that gas is introduced also can be at air reservoir 1 place generally on resonatron 2, the position that gas is drawn should the bigger resonatron 2 of pressure amplitude near cooler 3 places.Also link to each other through unidirectional flow control valve 6 between n level thermoacoustic compressor and high pressure gas outlet A, gas can only be by n level thermoacoustic compressor single flow direction gas outlet A.After the compression of multistage standing wave thermoacoustic compressor, gas is discharged the high pressure that the supply system cooling system is required from the lower pressure compression of low-pressure admission mouth B with after being pumped to the high pressure of high pressure gas outlet A.
Thermoacoustic compressor among Fig. 3 is made up of pure capable ripple thermoacoustic compressor of N level and inter-stage unidirectional flow control valve 6, and pure capable ripple thermoacoustic compressor mainly is made up of resonatron 2, cooler 3, heater 5, thermal acoustic regenerator 8.The course of work is identical with the multistage standing wave thermoacoustic compressor of Fig. 2.It is resonatron 2 places shown in Figure 3 that gas is introduced the position, can suitably adjust; Extraction location is usually located near the cooler 3.
Thermoacoustic compressor among Fig. 4 is made up of N level row ripple standing wave mixed type thermoacoustic compressor and inter-stage unidirectional flow control valve 6, and row ripple standing wave mixed type thermoacoustic compressor mainly is made up of heater 5, primary cooler 7, thermal acoustic regenerator 7, thermal buffer tube 9, inferior cooler 10, backfeed loop 11, resonance straight-path 12.The course of work is identical with the multistage standing wave thermoacoustic compressor of Fig. 2, and difference is to lead in/out the difference of position.Capable ripple standing wave mixed type thermoacoustic compressor intakes at different levels position is as shown in Figure 3, can be positioned at resonance straight-path 12 right-hand members, can also be positioned at other positions of capable ripple loop resonant forthright; Because the position of gas outlet generally should be at the pressure amplitude larger part, so the outlet position should can also be positioned at the intersection point place of resonance straight-path 12 and loop near the loop acoustic capacitance shown in Fig. 4.
In addition, one group of thermoacoustic compressor inside can also be in standing wave thermoacoustic compressor, pure capable ripple thermoacoustic compressor or the row ripple standing wave mixed type thermoacoustic compressor one or more.
Said refrigeration machine is G-M refrigeration machine or G-M type vascular refrigerator.Described SECO valve is plane rotating valve or solenoid electric valve.Described unidirectional flow control valve is check valve or the asymmetric injector of two-way flow resistance.
As shown in Figure 5, the G-M refrigeration machine mainly is made up of level aftercooler 13, low temperature regenerator 14, cool end heat exchanger 15, displacer 20 and expansion cylinder 21.The F place is the air distribution port of refrigeration machine among the figure, and the gas delivery of the height pressure that thermoacoustic compressor is provided through SECO valve 22 is to refrigeration machine.When sequential by-pass valve control 22 switches when refrigeration machine is connected with high pressure admission mouth C, displacer 20 is positioned at expansion cylinder 21 bottoms at this moment, and gas charges in the hot chamber and low temperature regenerator 14 of expansion cylinder 21 of G-M refrigeration machine.After the pressure balance, displacer 20 moves up from expansion cylinder 21 bottoms, the gases at high pressure that enter into hot chamber is passed through low temperature regenerator 14 got into cold chamber.Gas is through low temperature regenerator 14 time, and to the filler heat release, the temperature and pressure of gas reduces, and what carried out this moment is isobaric inflation.After treating that displacer 20 moves to the top of expansion cylinder 21, SECO valve 22 switches connects refrigeration machine and low pressure exhaust mouth D, and refrigeration machine carries out adiabatic degassing and produces refrigeration.Subsequently, displacer 20 moves down from expansion cylinder 21 tops, and gas is passed to hot chamber from cold chamber.When gas from bottom to top passes through the low temperature regenerator,, unnecessary cold is passed to regenerator recycle for next from the filler heat absorption.Last displacer 20 moves to the bottom of expansion cylinder 21, and such circulation just finishes, and that goes round and begins again is repeating above-mentioned cyclic process, and system just can continuous operation, constantly produces cold.In this process, the supply refrigeration machine was used for refrigeration after the low-pressure gas that thermoacoustic compressor is constantly discharged refrigeration machine sucked and be pumped to high pressure.
As shown in Figure 6, G-M type vascular refrigerator mainly is made up of level aftercooler 13, low temperature regenerator 14, cool end heat exchanger 15, vascular 16, hot end heat exchanger 17, aperture valve 18 and vascular air reservoir 19.The F place is the air distribution port of refrigeration machine among the figure, and the gas delivery of the height pressure that thermoacoustic compressor is provided through SECO valve 22 is to refrigeration machine.When 22 switchings of sequential by-pass valve control are connected refrigeration machine and high pressure admission mouth C; Gases at high pressure are through the SECO valve 22 low temperature regenerator 14 of flowing through; By the cooling of the backheat filler in the low temperature regenerator 14; Get into vascular 16 through cool end heat exchanger 15 with laminar, push gas in the pipe to blind end.After gas was squeezed, pressure and temperature rose, and the heat of generation is taken away through the hot end heat exchanger 17 that is arranged in vascular 16 blind ends, and the temperature of gas in the pipe is reduced.Then, SECO valve 22 switches connects refrigeration machine and low pressure exhaust mouth D, and gases expand in the vascular 16, produce refrigeration effect, and the gas temperature reduction is taken away cold through cool end heat exchanger 15.Gas reverse flow after the expansion is crossed low temperature regenerator 14, absorbs the heat in the backheat filler, is back to thermoacoustic compressor behind the gas rewarming and compresses.Aperture valve 18 mainly plays a part phase modulation and increases the expanding gas amount with vascular air reservoir 19 in vascular refrigerator.Then, SECO valve 22 is connected with high-pressure air feed mouth C once more, repeats with cocycle.In this process, the supply refrigeration machine was used for refrigeration after the low-pressure gas that thermoacoustic compressor is constantly discharged refrigeration machine sucked and be pumped to high pressure.
The refrigeration system that the thermoacoustic compressor that the utility model proposed drives directly adopts heat energy driving and generating low temperature, and cold and hot end does not have mechanical moving component, need not oil lubrication, and is simple in structure, and cost is low, and is reliable.
Claims (5)
1. the refrigeration system that thermoacoustic compressor drives is characterized in that comprising thermoacoustic compressor, SECO valve and refrigeration machine; The air distribution port E of SECO valve is connected with the air distribution port F of refrigeration machine; SECO valve high pressure admission mouth C is connected with thermoacoustic compressor high-pressure exhaust A; SECO valve low pressure exhaust mouth D is connected with thermoacoustic compressor low-pressure admission mouth B; Described thermoacoustic compressor comprises that N is 2～100 through the N level thermoacoustic compressor unit of unidirectional flow control valve series connection.
2. the refrigeration system that a kind of thermoacoustic compressor according to claim 1 drives is characterized in that, said thermoacoustic compressor unit is standing wave thermoacoustic compressor, pure capable ripple thermoacoustic compressor or row ripple standing wave mixed type thermoacoustic compressor.
3. the refrigeration system that a kind of thermoacoustic compressor according to claim 1 drives is characterized in that said refrigeration machine is G-M refrigeration machine or G-M type vascular refrigerator.
4. the refrigeration system that a kind of thermoacoustic compressor according to claim 1 drives is characterized in that described SECO valve is plane rotating valve or solenoid electric valve.
5. the refrigeration system that a kind of thermoacoustic compressor according to claim 1 drives is characterized in that described unidirectional flow control valve is check valve or the asymmetric injector of two-way flow resistance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011203319608U CN202229459U (en) | 2011-09-06 | 2011-09-06 | Refrigerating system driven by thermoacoustic compressor |
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| CN2011203319608U CN202229459U (en) | 2011-09-06 | 2011-09-06 | Refrigerating system driven by thermoacoustic compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102374688A (en) * | 2011-09-06 | 2012-03-14 | 浙江大学 | Refrigeration system driven by thermoacoustic compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102374688A (en) * | 2011-09-06 | 2012-03-14 | 浙江大学 | Refrigeration system driven by thermoacoustic compressor |
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Granted publication date: 20120523 Termination date: 20120906 |