CN103759464A - Loop type travelling wave thermoacoustic refrigerating system driven by linear compressor - Google Patents
Loop type travelling wave thermoacoustic refrigerating system driven by linear compressor Download PDFInfo
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- CN103759464A CN103759464A CN201410058792.8A CN201410058792A CN103759464A CN 103759464 A CN103759464 A CN 103759464A CN 201410058792 A CN201410058792 A CN 201410058792A CN 103759464 A CN103759464 A CN 103759464A
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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
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1426—Pulse tubes with basic schematic including at the pulse tube warm end a so called warm end expander
Abstract
A loop type travelling wave thermoacoustic refrigerating system driven by a linear compressor is composed of a loop type travelling wave thermoacoustic refrigerator and the linear compressor, wherein the loop type travelling wave thermoacoustic refrigerator is composed of N thermoacoustic refrigerator core units; the core units are connected through a resonant tube to constitute a loop; the linear compressor is connected to the resonant tube in a bypass mode, and the N is a positive integer ranging from 3 to 10; the phase difference between voltages of every two adjacent core units is 360 degrees/N; each core unit comprises a secondary room temperature side heat exchanger, a room temperature side laminar flow element, a hot buffering pipe, a cold side laminar flow element, a cold side heat exchanger, a heat regenerator and a main room temperature side heat exchanger which are sequentially connected; one end of the resonant tube is connected with a first reducer pipe, and the other end of the resonant tube is sequentially connected with a second reducer pipe, a connection cavity and a third reducer pipe. The linear compressor is in bypass connection, coupling in the refrigerator can be weakened, the linear compressor is matched with the refrigerator more easily, and the core units work on travelling wave cross phase positions; the loop structure enables acoustic power to be recycled, and generated direct currents are suppressed through a direct-current suppressor; the loop type travelling wave thermoacoustic refrigerating system has practical prospect.
Description
Technical field
The present invention relates to a kind of refrigeration system, the capable ripple thermoacoustic refrigeration system of loop type that particularly a kind of linear compressor drives.
Background technology
High temperature superconductor technology and gas liquefaction in recent years, separation industries are growing to the demand of long-life, large cold refrigeration machine, but conventional refrigeration machine all has problems at aspects such as the thermal efficiency, vibration, noise and low maintenance operation, life-spans.The pulse tube refrigerating machine (one of hot sound refrigerating machine) that linear compressor drives, because simple in structure, cold head movement-less part, life-span are long, and can realize more than 20% relative Carnot efficiency, 80K warm area can provide hectowatt so that kilowatt more than refrigerating capacity, thereby be more and more subject to paying close attention to widely and applying.As shown in Figure 1, mainly by linear compressor and pulse tube refrigerating machine, formed.Wherein pulse tube refrigerating machine is by main chamber's temperature heat exchanger 9, regenerator 10, cool end heat exchanger 11, pulse tube (thermal buffer tube) 12, inferior indoor temperature end heat exchanger 9 ' and be connected to the phase modulating mechanism composition after time room temperature heat exchanger.Phase modulating mechanism makes the regenerator of pulse tube refrigerating machine be operated in efficient sound field phase place by its acoustic impedance, but take the sound merit of institute that consumes time room temperature heat exchanger exit as cost.In general, the cold junction refrigerating capacity of pulse tube refrigerating machine and the sound merit of phase modulating mechanism consumption have suitable numerical value, and this just means that pulse tube refrigeration acc power is larger, and the sound merit that phase modulating mechanism need to consume is larger, if this part sound merit can be recycled, the efficiency of system will significantly promote.Therefore, the double acting row ripple thermoacoustic refrigeration system structure that a kind of linear compressor that grows up drives, as shown in Figure 2, by the piston of linear compressor is connected into cyclic system, piston one side is inputted sound merit as compression chamber the refrigeration machine core cell of this unit, and piston opposite side reclaims the sound merit that upper level unit refrigeration machine does not consume.N(N >=3) individual identical linear compressor and refrigeration machine core cell combined serial, by by the voltage phase difference ACTIVE CONTROL between linear compressor at 360/N, make the regenerator 22 of refrigeration machine be operated in traveling-wave phase, thereby realized Active phasing and the acoustic power recovery of refrigeration machine simultaneously.But this system is due to linear compressor is connected with refrigeration machine, and the coupling between two subsystems is very strong, higher to designing requirement.In real system, the inconsistency between unit can be exaggerated in this train simultaneously, and a motor cisco unity malfunction will cause whole system normally to work, thereby processing and manufacturing process are brought to larger challenge.
For solving the problem running in above two kinds of systems, use for reference the acoustic resonance type thermo-acoustic engine system that Dutch scholar DEBLOCK proposes, the present invention proposes the capable ripple thermoacoustic refrigeration system of loop type that a kind of linear compressor drives.
As shown in Figure 3, a kind of acoustic resonance type traveling wave thermoacoustic engine system of announcing in patent WO2010107308A1 for Dutch scholar DEBLOCK, this system builds an engine by arranging multiple thermoacoustic engine core cells on the loop at a wavelength, it has the advantages that power density is high, is suitable for large-power occasions.Core cell comprises main indoor temperature end heat exchanger 101, regenerator 102, hot end heat exchanger 103, between core cell, by reducer pipe, is connected with resonatron tubule section 109.This system is utilized on the basis of the advantages such as sound merit and Active phasing possessing double acting system recoveries, its key property also comprises: by increasing the Area Ratio of hot sound core cell and resonatron, reduce the flow velocity in hot sound core cell, reduce the flow resistance loss in regenerator, reduce resonatron diameter simultaneously, increase system pressure ratio; By multiple Cascade Systems, recycling sound merit is also shared resonatron loss; Load (as linear electric generator) bypass connecting system, reduces coupled characteristic between load and hot sound core cell, is convenient to manufacture, the operation of optimal design and real system.But the problem that WO201007308 exists is the thermal buffer tube that does not have diameter suitable with regenerator diameter in system, can be owing to existing large turbulent flow to produce cold and hot losses by mixture; Secondly, in this patent, there is no the measure of suppression loop direct current yet, can cause the loss of heat or cold yet.
Comprehensively, the present invention proposes a kind of novel flowage structure, can solve the problem existing in above-mentioned 3 kinds of traditional processes, and the capable ripple thermoacoustic refrigeration system of loop type that a kind of linear compressor drives, can meet efficient, reliable, long-life large refrigeration requirement occasion.
Summary of the invention
The object of the invention is to provide a kind of electric-driven refrigerating machine flowage structure, it is the capable ripple thermoacoustic refrigeration system of loop type that a kind of linear compressor drives, a kind of large cold refrigeration system efficient, reliable, long-life feature that has be can obtain, liquid nitrogen temperature and above various cold junction temperatures and the occasion of different refrigeration requirement can be used for; The present invention reclaims, utilizes sound merit by employing loop type structure, and improves system effectiveness by suppressing the key measures such as thermal buffer tube loss, loop sound DC-flow; By linear compressor is other, connect mode, weaken the stiffness of coupling between linear compressor and refrigeration machine core cell, optimal design and the actual motion of being convenient to system regulate; By the introducing of thermal buffer tube, realize cool end heat exchanger movement-less part, strengthen system reliability; By multiple-unit, combine to improve the energy density of system, meet the needs of large cold occasion.
Technical scheme of the present invention is as follows:
The capable ripple thermoacoustic refrigeration system of loop type that linear compressor provided by the invention drives, it is comprised of the capable ripple hot sound refrigerating machine of loop type and linear compressor; The capable ripple hot sound refrigerating machine of described loop type comprises N hot sound refrigerating machine core cell 1, and 1 of each hot sound refrigerating machine core cell connects and composes loop by resonatron 110 head and the tail; Described linear compressor is connected on the resonatron 110 in loop by side, the positive integer that described N is 3-10;
Described each hot sound refrigerating machine core cell 1 comprises the inferior indoor temperature end heat exchanger 101, thermal buffer tube 103, cool end heat exchanger 105, regenerator 106 and the main indoor temperature end heat exchanger 107 that are connected successively; It is characterized in that, also comprise be connected in the indoor temperature end laminarization element 102 between time indoor temperature end heat exchanger 101 and thermal buffer tube 103 and be connected in thermal buffer tube 103 and cool end heat exchanger 105 between cold junction laminarization element 104; Indoor temperature end laminarization element 102 is cold and hot fluid lossess by mixture in the thermal buffer tube in order to reduce to bring due to Complex Flows such as turbulent flow or jets with the effect of cold junction laminarization element 104.For reducing because circulation area changes the flow losses of bringing;
For reducing because circulation area changes the flow losses of bringing, described resonatron 110 one end connect one first reducer pipe 108, and described the first reducer pipe 108 is connected with the main indoor temperature end heat exchanger 107 of described hot sound refrigerating machine core cell 1; Described resonatron 110 other ends are connected with the second reducer pipe 111, connection chamber 112 and the 3rd reducer pipe 113 in turn, and described the 3rd reducing 113 is connected with the inferior indoor temperature end heat exchanger 101 of next stage hot sound refrigerating machine core cell 1; To form the capable ripple hot sound refrigerating machine of loop type;
The linear electric motors that described linear compressor 2 comprises two opposed motions are to reduce vibration; Described linear electric motors are comprised of piston 201, support unit 202, stator coil 203, mover magnet 204 and shell 205; Described linear compressor 2 is connected on resonatron 110 by the 3rd reducer pipe 113, connection chamber 112 and the second reducer pipe 111 sides successively, the capable ripple thermoacoustic refrigeration system of loop type driving to form linear compressor;
The sound merit that upper level hot sound refrigerating machine core cell does not consume is converged in connection chamber 112 via the 3rd reducing 113 and the sound merit that linear compressor 2 at the corresponding levels is exported, and from the main indoor temperature end heat exchanger 107 of hot sound refrigerating machine core cell at the corresponding levels, enter into the regenerator 106 of this hot sound refrigerating machine core cell via the second reducing 111, resonatron 110 and the first reducing 108, this regenerator 106 is pumped into time indoor temperature end heat exchanger 101, in this regenerator 106 formation temperature gradient by heat from cool end heat exchanger 105 by consumption sound merit; Cool end heat exchanger 105 is connected with low-temperature heat source, maintains or reduce the temperature of low-temperature heat source by absorbing the heat of low-temperature heat source; Described main indoor temperature end heat exchanger 107 is connected with room temperature thermal source respectively with time indoor temperature end heat exchanger 101, and this main indoor temperature end heat exchanger 107 forms indoor temperature end by thermal release to environment; The residue sound merit not consuming after this regenerator 106 is passed through cool end heat exchanger 105 successively, thermal buffer tube 103, inferior room temperature heat exchanger 101, output in the connection chamber of next stage linear compressor, this residue sound merit is converged mutually with the output sound merit of next stage linear compressor, by the resonatron of next stage hot sound refrigerating machine core cell, enter into next stage hot sound refrigerating machine core cell, realize the recycling of sound merit; So circulation, forms the capable ripple thermoacoustic refrigeration system of loop type that linear compressor drives.
Optional position on the described other resonatron 110 that is connected to the capable ripple hot sound refrigerating machine of loop type of linear compressor 2.The interior sound merit loss of the more excellent work phase place of comprehensive regenerator 106 and resonatron 110, further other inferior room temperature heat exchanger 101 sides or other main chamber's temperature heat exchanger 108 sides (these two position system performances are more excellent) that are connected to hot sound refrigerating machine core cell at the corresponding levels that are connected to upper level hot sound refrigerating machine core cell of described linear compressor 2.
The cool end heat exchanger 103 at described thermal buffer tube 103 and its two ends and the cross-sectional area of inferior indoor temperature end heat exchanger 101 are than between 0.75～1.25; And at the two ends of described thermal buffer tube 103, be furnished with respectively cold junction laminarization element 104 and indoor temperature end laminarization element 102, to reduce the cold and hot fluid losses by mixture bringing due to Complex Flows such as turbulent flow or jets in thermal buffer tube 103.
The circulation area of described resonatron 110 is 1/25 to 1/10 of hot sound refrigerating machine core cell place circulation area, thereby to keep the acoustic impedance in regenerator 106 to reduce greatly fluid resistance loss; The length of described resonatron 110 is got approximately sound wave length/N, thereby makes system reach loop acoustic resonance state, obtains best acoustic power recovery and realize sound field to regulate.
For suppressing the direct current in row ripple loop, hot sound refrigerating machine core cell 1 of the present invention also comprises the direct current suppressor 109 of placing in loop; Described loop direct current suppressor 109 is preferably placed at first reducer pipe 108 larger one end of diameter; Described loop sound direct current straining element 109 is elastic membrane or asymmetric jet pump.
The working medium that the capable ripple thermoacoustic refrigeration system of loop type that linear compressor of the present invention drives is used is helium, hydrogen, nitrogen, argon gas or their combined hybrid gas, to meet the requirement of mating between different cryogenic temperatures and refrigeration machine and linear compressor.
Hot sound refrigerating machine core cell 1 quantity of the present invention is identical with linear compressor 2 quantity or not identical, can adjust according to actual needs linear compressor quantity.
In the capable ripple thermoacoustic refrigeration system of loop type that linear compressor of the present invention drives, described hot sound refrigerating machine core cell quantity and linear compressor quantity can be 3-10 or more, preferably 3,4,6,8,9, can realize different refrigeration work consumptions; As required, hot sound refrigerating machine core cell quantity and linear compressor quantity can be identical or not identical;
The capable ripple thermoacoustic refrigeration system of the loop type advantage that linear compressor of the present invention drives is: it can be used under liquid nitrogen temperature and above various cold junction temperatures and meets different refrigeration requirement, by suppressing thermal buffer tube loss, DC-flow and the effective key measure such as recovery sound merit, effectively improved the performance of complete machine; , because linear compressor is other, be connected on resonatron, it is more easy to make to mate between linear compressor and refrigeration machine meanwhile, and also can regulate the operation quantity of linear compressor during actual motion; Therefore the capable ripple thermoacoustic refrigeration system of loop type that, linear compressor of the present invention drives has more practical value and application prospect.
Accompanying drawing explanation
Fig. 1 is existing traditional pulse tube refrigerating machine structural representation;
Fig. 2 is the double acting row ripple thermoacoustic refrigeration system structural representation that existing linear compressor drives;
Fig. 3 is the capable ripple heat and acoustic power generating system of existing acoustic resonance type structural representation;
Fig. 4 is the capable ripple thermoacoustic refrigeration system of loop type (embodiment 1) structural representation that linear compressor of the present invention drives;
Fig. 5 is the capable ripple thermoacoustic refrigeration system of loop type (embodiment 2) structural representation that linear compressor of the present invention drives;
Fig. 6 is the capable ripple thermoacoustic refrigeration system of loop type (embodiment 3) structural representation that linear compressor of the present invention drives;
Fig. 7 is the capable ripple thermoacoustic refrigeration system of loop type (embodiment 4) structural representation that linear compressor of the present invention drives;
The specific embodiment
The capable ripple thermoacoustic refrigeration system of loop type that linear compressor of the present invention drives, can be used under liquid nitrogen temperature and above various cold junction temperatures and meet different refrigeration requirement, by suppressing thermal buffer tube loss, DC-flow and the effective key measure such as recovery sound merit, effectively improve the performance of complete machine; , because linear compressor is other, be connected on resonatron, it is more easy to make to mate between linear compressor and refrigeration machine meanwhile, and also can regulate the operation quantity of linear compressor during actual motion; Therefore the capable ripple thermoacoustic refrigeration system of loop type that, linear compressor of the present invention drives has more practical value and application prospect.
Below by drawings and Examples, further describe the present invention.
Embodiment 1:
Fig. 4 is the capable ripple thermoacoustic refrigeration system of loop type (embodiment 1) structural representation that linear compressor of the present invention drives.As shown in Figure 4, the capable ripple thermoacoustic refrigeration system of loop type that the linear compressor of the present embodiment drives, it is comprised of the capable ripple hot sound refrigerating machine of loop type and linear compressor; The capable ripple hot sound refrigerating machine of described loop type comprises 3 hot sound refrigerating machine core cells 1, and 1 of each hot sound refrigerating machine core cell connects and composes loop by resonatron 110 head and the tail; The equal bypass of 3 linear compressors of the present embodiment 2 is connected on resonatron 110, near inferior room temperature heat exchanger 101 sides of upper level hot sound refrigerating machine core cell 1;
Each hot sound refrigerating machine core cell 1 all comprises the inferior indoor temperature end heat exchanger 101, thermal buffer tube 103, cool end heat exchanger 105, regenerator 106 and the main indoor temperature end heat exchanger 107 that are connected successively; It is characterized in that, also comprise be connected in the indoor temperature end laminarization element 102 between time indoor temperature end heat exchanger 101 and thermal buffer tube 103 and be connected in thermal buffer tube 103 and cool end heat exchanger 105 between cold junction laminarization element 104; Indoor temperature end laminarization element 102 is cold and hot fluid lossess by mixture in the thermal buffer tube in order to reduce to bring due to Complex Flows such as turbulent flow or jets with the effect of cold junction laminarization element 104.For reducing because circulation area changes the flow losses of bringing;
Described resonatron 110 one end are connected with the first reducer pipe 108; The first reducer pipe 108 is connected with the main indoor temperature end heat exchanger 107 of described each hot sound refrigerating machine core cell 1; Described resonatron 110 other ends are connected with the second reducer pipe 111, connection chamber 112 and the 3rd reducer pipe 113 in turn, described the 3rd reducing 113 is connected with the inferior indoor temperature end heat exchanger 101 of upper level hot sound refrigerating machine core cell 1, to form the capable ripple hot sound refrigerating machine of loop type;
The linear electric motors that each linear compressor 2 comprises two opposed motions are to reduce vibration; Described linear electric motors are comprised of piston 201, support unit 202, stator coil 203, mover magnet 204 and shell 205; 3 linear compressors of the present embodiment are connected on the resonatron 110 in loop by the 3rd reducer pipe 113, connection chamber 112 and the second reducer pipe 111 sides respectively, the capable ripple thermoacoustic refrigeration system of loop type driving to form linear compressor;
The sound merit that upper level hot sound refrigerating machine core cell does not consume is converged in connection chamber 112 via the 3rd reducing 113 and the sound merit that linear compressor 2 at the corresponding levels is exported, and from the main indoor temperature end heat exchanger 107 of hot sound refrigerating machine core cell at the corresponding levels, enter into the regenerator 106 of this hot sound refrigerating machine core cell via the second reducing 111, resonatron 110 and the first reducing 108, this regenerator 106 is pumped into time indoor temperature end heat exchanger 101, in this regenerator 106 formation temperature gradient by heat from cool end heat exchanger 105 by consumption sound merit; Cool end heat exchanger 105 is connected with low-temperature heat source, maintains or reduce the temperature of low-temperature heat source by absorbing the heat of low-temperature heat source; Described main indoor temperature end heat exchanger 107 is connected with room temperature thermal source respectively with time indoor temperature end heat exchanger 101, and this main indoor temperature end heat exchanger 107 forms indoor temperature end by thermal release to environment; The residue sound merit not consuming after this regenerator 106 is passed through cool end heat exchanger 105 successively, thermal buffer tube 103, inferior room temperature heat exchanger 101, output in the connection chamber of next stage linear compressor, this residue sound merit is converged mutually with the output sound merit of next stage linear compressor, by the resonatron of next stage hot sound refrigerating machine core cell, enter into next stage hot sound refrigerating machine core cell, realize the recycling of sound merit; So circulation, forms the capable ripple thermoacoustic refrigeration system of loop type that linear compressor drives.
In the present embodiment, the other inferior room temperature heat exchanger exit place being connected near upper level hot sound refrigerating machine unit of linear compressor 2, sound merit enters hot sound refrigerating machine core cell at the corresponding levels after via resonatron 110 again, has improved the work phase place of regenerator 106 in sound field, and machine system service behaviour is better.Thermal buffer tube 103 is suitable with cool end heat exchanger 103 and inferior indoor temperature end heat exchanger 101 circulation areas at its two ends, and at the two ends of described thermal buffer tube 103, be furnished with respectively cold junction laminarization element 104 and indoor temperature end laminarization element 102, can reduce the cold and hot fluid losses by mixture bringing due to Complex Flows such as turbulent flow or jets in thermal buffer tube 103.The circulation area of resonatron 110 is 1/25 to 1/10 of hot sound refrigerating machine core cell place circulation area, can keep regenerator acoustic impedance large, reduce fluid resistance loss.The first reducing 108, the second reducings 111, the introducing of connection chamber 112 and the 3rd reducing 113, the loss in the time of can reducing linear compressor 2 consumption sound merit is not converged with upper level, and reduce resonatron 110 both sides sectional areas and changes the sound merit of bringing and lose; In the first reducing 108, place direct current straining element 109, can suppress DC-flow, improve systematic function.
Embodiment 2:
Fig. 5 is the capable ripple thermoacoustic refrigeration system of loop type (embodiment 2) structural representation that linear compressor of the present invention drives.As different from Example 1, other main chamber's temperature heat exchanger 107 sides that are connected to hot sound refrigerating machine core cell 1 at the corresponding levels of linear compressor 2 of the present embodiment.As shown in Figure 5, the capable ripple thermoacoustic refrigeration system of loop type that the linear compressor of the present embodiment drives is comprised of the capable ripple hot sound refrigerating machine of loop type and linear compressor; The capable ripple hot sound refrigerating machine of loop type comprises 3 hot sound refrigerating machine core cells 1, and 1 of each hot sound refrigerating machine core cell connects and composes loop by resonatron 110 head and the tail; The equal bypass of 3 linear compressors of the present embodiment 2 is connected on resonatron, near main chamber's temperature heat exchanger 107 sides of this hot sound refrigerating machine core cell 1;
Described hot sound refrigerating machine core cell 1 comprises the inferior indoor temperature end heat exchanger 101, thermal buffer tube 103, cool end heat exchanger 105, regenerator 106, the main indoor temperature end heat exchanger 107 that are connected successively.It is characterized in that, also comprise the indoor temperature end laminarization element 102 that is connected between time indoor temperature end heat exchanger 101 and thermal buffer tube 103, be connected in the cold junction laminarization element 104 between thermal buffer tube 103 and cool end heat exchanger 105.Indoor temperature end laminarization element 102 is cold and hot fluid lossess by mixture in the thermal buffer tube in order to reduce to bring due to Complex Flows such as turbulent flow or jets with the effect of cold junction laminarization element 104; For reducing because circulation area changes the flow losses of bringing, described resonatron 111 one end are connected with the second reducer pipe 110 in turn, connection chamber 109, the first reducings 108; The first reducing 108 is connected with the main indoor temperature end heat exchanger 107 of described each hot sound refrigerating machine core cell 1; Described resonatron 111 other ends are connected with the 3rd reducer pipe 112, and described the 3rd reducing 112 is connected with the inferior indoor temperature end heat exchanger 101 of upper level hot sound refrigerating machine core cell 1, to form the capable ripple hot sound refrigerating machine of loop type;
The linear electric motors that described linear compressor 2 comprises two opposed motions are to reduce vibration.Described linear electric motors are comprised of piston 201, support unit 202, stator coil 203, mover magnet 204 and shell 205.Described linear compressor 2 is connected between main chamber's temperature heat exchanger 107 and resonatron 111 by connection chamber 109, the first reducer pipe 108, the second reducer pipe 110 sides, forms the capable ripple thermoacoustic refrigeration system of loop type that linear compressor drives.The driving voltage amplitude of the linear compressor of adjacent cells equates, has 120 degree phase differences, thereby make the piston movement between adjacent cells be operated in 120 degree phase differences between voltage, guarantees that the regenerator in hot sound refrigerating machine core cell is operated in traveling-wave phase.
In the present embodiment, other temperature heat exchanger 107 porch, close main chamber that are connected to of linear compressor 2, the sound merit that linear electric motors 2 output sound merits and upper level do not consume directly enters hot sound refrigerating machine core cell, the sound field phase place at regenerator 106 places is not good enough than embodiment 1, but has reduced the sound merit loss in resonatron 111 than embodiment 1.Thermal buffer tube 103 is suitable with cool end heat exchanger 103 and inferior indoor temperature end heat exchanger 101 circulation areas at its two ends, and at the two ends of described thermal buffer tube 103, be furnished with respectively cold junction laminarization element 104 and indoor temperature end laminarization element 102, can reduce the cold and hot fluid losses by mixture bringing due to Complex Flows such as turbulent flow or jets in thermal buffer tube 103.The circulation area of resonatron 111 is 1/25 to 1/10 of hot sound refrigerating machine core cell place circulation area, can guarantee that the acoustic impedance at regenerator 106 places is larger, thereby reduce the fluid resistance loss in regenerator 106.The first reducing 108, the introducing of connection chamber 109, the second reducings 110 and the 3rd reducing 112, the loss in the time of can reducing linear compressor 2 consumption sound merit is not converged with upper level, and reduce resonatron 111 both sides sectional areas and changes the sound merit of bringing and lose.In the 3rd reducing 112, place direct current straining element 113, can suppress DC-flow, improve systematic function.
Embodiment 3:
Fig. 6 is the capable ripple thermoacoustic refrigeration system of loop type (embodiment 3) structural representation that linear compressor of the present invention drives.As shown in Figure 6, different from embodiment 2, the capable ripple thermoacoustic refrigeration system of loop type that the linear compressor of the present embodiment drives includes four hot sound refrigerating machine core cells, and each unit all has, and a linear compressor is other to be connected on each resonatron.
Embodiment 4:
Fig. 7 is the capable ripple thermoacoustic refrigeration system of loop type (embodiment 4) structural representation that linear compressor of the present invention drives.As shown in Figure 7, different from embodiment 2, the capable ripple thermoacoustic refrigeration system of loop type that the linear compressor in the present embodiment drives includes six hot sound refrigerating machine core cells, and each unit all has, and a linear compressor is other to be connected on each resonatron.
In theory, we can be composed in series loop by any number of hot sound refrigerating machine core cells, need, in conjunction with conditions such as the sound field phase place at regenerator place and the power densities of system, to select the unit number of suitable (the preferred 3-10 of the present invention) under actual conditions.
Above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. the capable ripple thermoacoustic refrigeration system of loop type that linear compressor drives, it is comprised of the capable ripple hot sound refrigerating machine of loop type and linear compressor; The capable ripple hot sound refrigerating machine of described loop type comprises N hot sound refrigerating machine core cell (1), between each hot sound refrigerating machine core cell (1), by resonatron (110) head and the tail, connects and composes loop; By described linear compressor, be connected on the resonatron (110) in loop the positive integer that described N is 3-10;
Described each hot sound refrigerating machine core cell (1) comprises the inferior indoor temperature end heat exchanger (101), thermal buffer tube (103), cool end heat exchanger (105), regenerator (106) and the main indoor temperature end heat exchanger (107) that are connected successively; It is characterized in that, also comprise be connected in the indoor temperature end laminarization element (102) between time indoor temperature end heat exchanger (101) and thermal buffer tube (103) and be connected in thermal buffer tube (103) and cool end heat exchanger (105) between cold junction laminarization element (104);
Described resonatron (110) one end connects the first reducer pipe (108), and described the first reducer pipe (108) is connected with the main indoor temperature end heat exchanger (107) of described hot sound refrigerating machine core cell (1); Described resonatron (110) other end is connected with the second reducer pipe (111), connection chamber (112) and the 3rd reducer pipe (113) in turn, and described the 3rd reducing (113) is connected with the inferior indoor temperature end heat exchanger (101) of next stage hot sound refrigerating machine core cell (1); To form the capable ripple hot sound refrigerating machine of loop type;
The linear electric motors that described linear compressor (2) comprises two opposed motions; Described linear electric motors are comprised of piston (201), support unit (202), stator coil (203), mover magnet (204) and shell (205); Described linear compressor (2) is connected to resonatron (110) above, the capable ripple thermoacoustic refrigeration system of loop type driving to form linear compressor by the 3rd reducer pipe (113), connection chamber (112) and the second reducer pipe (111) are other successively;
Stator coil (203) incoming transport electricity in described linear compressor (2), according to electromagnetic induction principle, alternating current drives mover magnet (204) to move in stator coil (203), mover magnet (204) drives piston (201) to move reciprocatingly and is sound merit by electric energy conversion, and outputs in the capable ripple hot sound refrigerating machine of loop type; The driving voltage amplitude of the linear compressor (2) of adjacent heat acoustic refrigerator core cell (1) is equal, has phase difference between voltage, and described phase difference is 360 degree/N;
The sound merit that upper level hot sound refrigerating machine core cell does not consume is converged in connection chamber (112) via the 3rd reducing (113) and the sound merit of linear compressor at the corresponding levels (2) output, and via the second reducing (111), resonatron (110) and the first reducing (108) enter into the regenerator (106) of this hot sound refrigerating machine core cell from the main indoor temperature end heat exchanger (107) of hot sound refrigerating machine core cell at the corresponding levels, this regenerator (106) is pumped into time indoor temperature end heat exchanger (101) by heat from cool end heat exchanger (105) by consumption sound merit, formation temperature gradient in this regenerator (106), cool end heat exchanger (105) is connected with low-temperature heat source, maintains or reduce the temperature of low-temperature heat source by absorbing the heat of low-temperature heat source, described main indoor temperature end heat exchanger (107) is connected with room temperature thermal source respectively with time indoor temperature end heat exchanger (101), and this main indoor temperature end heat exchanger (107) forms indoor temperature end by thermal release to environment, the residue sound merit not consuming after this regenerator (106) is passed through cool end heat exchanger (105) successively, thermal buffer tube (103) and time room temperature heat exchanger (101), output in the connection chamber of next stage linear compressor, this residue sound merit is converged mutually with the output sound merit of next stage linear compressor, by the resonatron of next stage hot sound refrigerating machine core cell, enter into next stage hot sound refrigerating machine core cell, realize the recycling of sound merit, so circulation, forms the capable ripple thermoacoustic refrigeration system of loop type that linear compressor drives.
2. the capable ripple thermoacoustic refrigeration system of loop type driving according to the linear compressor described in claims 1, is characterized in that, the optional position on the other resonatron (110) that is connected to the capable ripple hot sound refrigerating machine of loop type of described linear compressor (2).
3. the capable ripple thermoacoustic refrigeration system of loop type driving according to the linear compressor described in claims 2, it is characterized in that other inferior room temperature heat exchanger (101) side or other main chamber's temperature heat exchanger (108) side that is connected to hot sound refrigerating machine core cell at the corresponding levels that is connected to upper level hot sound refrigerating machine core cell of described linear compressor (2).
4. the capable ripple thermoacoustic refrigeration system of loop type driving according to the linear compressor described in claims 1, it is characterized in that, cool end heat exchanger (103) cross-sectional area at described thermal buffer tube (103) cross-sectional area and its two ends and inferior indoor temperature end heat exchanger (101) cross-sectional area are than between 0.75～1.25.
5. the capable ripple thermoacoustic refrigeration system of loop type driving according to the linear compressor described in claims 1, is characterized in that, the circulation area of described resonatron (110) is 1/25 to 1/10 of hot sound refrigerating machine core cell place circulation area; Described resonatron (110) length is sound wave length/N.
6. the capable ripple thermoacoustic refrigeration system of loop type driving according to the linear compressor described in claims 1, is characterized in that, hot sound refrigerating machine core cell (1) also comprises the direct current suppressor (109) of placing in loop; Described loop direct current suppressor (109) is positioned at the large one end of the first reducer pipe (108) diameter; Described loop sound direct current straining element (109) is elastic membrane or asymmetric jet pump.
7. the capable ripple thermoacoustic refrigeration system of loop type driving according to the linear compressor described in claims 1, it is characterized in that, the working medium that the capable ripple thermoacoustic refrigeration system of loop type that described linear compressor drives is used is helium, hydrogen, nitrogen, argon gas or their combined hybrid gas.
8. the capable ripple thermoacoustic refrigeration system of loop type driving according to the linear compressor described in claims 1, is characterized in that, described hot sound refrigerating machine core cell (1) quantity is identical or not identical with linear compressor (2) quantity.
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| CN103759464B (en) | 2016-05-18 |
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