CN103411359B - A kind of adjustable double acting row ripple thermoacoustic system - Google Patents
A kind of adjustable double acting row ripple thermoacoustic system Download PDFInfo
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- CN103411359B CN103411359B CN201310359089.6A CN201310359089A CN103411359B CN 103411359 B CN103411359 B CN 103411359B CN 201310359089 A CN201310359089 A CN 201310359089A CN 103411359 B CN103411359 B CN 103411359B
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- double acting
- row ripple
- thermoacoustic
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- ripple thermoacoustic
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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
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of adjustable double acting row ripple thermoacoustic system, it is made up of double acting row ripple thermoacoustic system and at least one adjusting means, and adjusting means is arranged in the connecting pipe between the compressor of double acting row ripple thermoacoustic system and Sonic heat changing parts; Adjusting means is valve, inertia tube, air reservoir or its combination; Double acting row ripple thermoacoustic system is single-stage double acting row ripple thermoacoustic system and multistage double acting row ripple thermoacoustic system; When the present invention can be expert at and occur the inconsistent and system unstability of performance between each unit of ripple thermoacoustic system, adjusting means can regulate the loss of merit stream, volume flow rate, phase relation etc. that flow through herein, thus keeps the uniformity of service behaviour between each unit.
Description
Technical field
The present invention relates to the double acting row ripple thermoacoustic system in energy source and power and low-temperature refrigeration technology, particularly one adjustable double acting row ripple thermoacoustic system.
Background technology
Double acting thermoacoustic system is a kind of novel energy conversion device put forward recently, it can utilize heat energy to set up thermograde in its regenerator, produce self-oscillatory pressure wave, pressure wave pushing generator outwards exports electric energy, and this structure is called double acting thermoacoustic engine; Also electric energy can be utilized to produce pressure wave by compressor, and pressure wave carries out heat carrying in regenerator, and obtain refrigeration, this structure is called double acting hot sound refrigerating machine.Compared to traditional thermoacoustic system, double acting thermoacoustic system efficiency is higher, and structure is compacter, more close to practical application.
There is an important technology barrier in double acting thermoacoustic refrigeration system: when temperature is reduced to certain value, when the thermograde in regenerator is larger, refrigerator system can produce self-oscillation at present; Self-oscillation can make refrigerator system occur two operating frequencies usually, stops the further reduction of cold head temperature simultaneously, thus makes refrigeration machine performance severe exacerbation, even cannot obtain required cryogenic temperature.
In double acting thermo-acoustic engine system; due to the nuance of processing and fit between different compressors and between different Sonic heat changing parts; performance between compressor be there are differences; performance between thermo-acoustic converter also there are differences; and this species diversity is exaggerated by feedback in double acting thermo-acoustic engine system loop; therefore in the thermo-acoustic engine system of reality when the thermograde in regenerator is higher, engine system also usually there will be can not the situation of steady operation.
Summary of the invention
The object of the invention is to provide a kind of adjustable double acting row ripple thermoacoustic system, problem of inconsistency defect in self-oscillation problem in double acting refrigeration machine of the prior art and double acting thermoacoustic engine can be overcome, run while the compressor in double acting thermoacoustic system and Sonic heat changing parts Uniformly stable can be made.
Technical scheme of the present invention is as follows:
Adjustable double acting row ripple thermoacoustic system provided by the invention, it is made up of double acting row ripple thermoacoustic system and at least one adjusting means, and described adjusting means is arranged in the connecting pipe between the compressor of double acting row ripple thermoacoustic system and Sonic heat changing parts.
Described adjusting means is valve, inertia tube, air reservoir or its combination.
Described double acting row ripple thermoacoustic system is double acting thermo-acoustic engine system, double acting thermoacoustic refrigeration system or double acting heat pump.
Described double acting thermo-acoustic engine system is single-stage double acting thermo-acoustic engine system or multistage double acting thermo-acoustic engine system.Described double acting thermoacoustic refrigeration system is single-stage double acting thermoacoustic refrigeration system or multistage double acting thermoacoustic refrigeration system.Described double acting heat pump is single-stage double acting heat pump or multistage double acting heat pump.
The feature of double acting row ripple thermoacoustic system provided by the invention is: be expert at when to there is the inconsistent and system unstability of performance between each unit of ripple thermoacoustic system, adjusting means can regulate the loss of merit stream, volume flow rate, phase relation etc. that flow through herein, thus keeps the uniformity of service behaviour between each unit.
Accompanying drawing explanation
Fig. 1 is the structural representation of adjustable double acting (single-stage) row ripple hot sound refrigerating machine (embodiment 1) in adjustable double acting row ripple thermoacoustic system of the present invention;
Fig. 2 is the structural representation of adjustable double acting (single-stage) traveling wave thermoacoustic engine (embodiment 2) in adjustable double acting row ripple thermoacoustic system of the present invention;
Fig. 3 is the structural representation of adjustable double acting (two-stage) row ripple hot sound refrigerating machine (embodiment 3) in adjustable double acting row ripple thermoacoustic system of the present invention.
Wherein: linear electric motors 1 Sonic heat changing parts 2 valve 31
Inertia tube 32 air reservoir 33 expansion chamber 11,11 '
Compression chamber 12 first normal temperature heat exchanger 21 regenerator 22
Non-normal temperature heat exchanger 23,23 ' thermal buffer tube 24,24 '
Second normal temperature heat exchanger 25,25 '
Detailed description of the invention
Fig. 1 is the structural representation of adjustable double acting (single-stage) row ripple hot sound refrigerating machine (embodiment 1) in adjustable double acting row ripple thermoacoustic system of the present invention;
The double acting single-stage low-temperature thermoacoustic refrigerator of the present embodiment is by join end to end and three elementary cells forming loop form; Each elementary cell forms by linear electric motors 1 and Sonic heat changing parts 2; Described Sonic heat changing parts 2 are made up of the first normal temperature heat exchanger 21 be connected successively, regenerator 22 and non-normal temperature heat exchanger 23; The adjusting means of the present embodiment selects valve 31; In the connecting pipe that the present embodiment has two valves 31 to be arranged on respectively between the compressor 12 of the double acting row ripple thermoacoustic system in left side and below and the first normal temperature heat exchanger 21 of Sonic heat changing parts.
Valve also can be substituted by inertia tube 32.
When not having adjusting means valve 31, system shown in Figure 1 is traditional double acting single-stage low-temperature thermoacoustic refrigerator; Linear electric motors to move back and forth generation pressure wave under input voltage drives, pressure wave carries out heat carrying in the regenerator 22 of Sonic heat changing parts 2, heat in non-normal temperature heat exchanger 23 is transported to the first normal temperature heat exchanger 21 by regenerator 22, thus produces refrigeration effect.When there is no adjusting means valve 31, refrigerator system shown in Fig. 1 is because processing and the reason of assembling, work between motor inconsistent, the temperature of non-normal temperature heat exchanger 23 also there will be difference, more serious problem is that system self-oscillation can occur when the temperature of non-normal temperature heat exchanger 23 is reduced near 100K, and such system there will be self-oscillation and extraneous driving two frequencies, cold head temperature cannot reduce further, occurs the trend that fluctuation is risen.
In order to suppress inconsistent and self-oscillatory problem, in the elementary cell of left side and below, valve 31 is installed; Valve installation is between normal temperature heat exchanger 21 and the compression chamber 12 of linear electric motors, and valve has the effect of dissipation sound merit, simultaneously can control phase relation.Sound power consumption herein can be regulated to fall apart and phase relation by the aperture size of control valve, thus three elementary cells are unanimously worked, suppress self-oscillatory generation simultaneously.
It is pointed out that, by the expansion chamber 11 in Fig. 1 and compression chamber 12 switch, this system then becomes an adjustable double acting heat pump.Linear electric motors to move back and forth generation pressure wave under input voltage drives, pressure wave carries out heat carrying in the regenerator 22 of Sonic heat changing parts 2, heat in normal temperature heat exchanger 21 is transported to non-normal temperature heat exchanger 23 by regenerator 22, thus generation heats effect.Similarly, when not having adjusting means valve 31, system there will be inconsistent phenomenon, and when non-normal temperature heat exchange temperature is elevated to certain value, system can produce self-oscillation.When having had adjusting means valve 31, inconsistent phenomenon and self-oscillation can effectively be suppressed.
Fig. 2 is the structural representation of adjustable double acting (single-stage) traveling wave thermoacoustic engine (embodiment 2) in adjustable double acting row ripple thermoacoustic system of the present invention; It is made up of four elementary cells, and each elementary cell comprises linear electric motors 1 and Sonic heat changing parts 2; Sonic heat changing parts 2 are made up of the first normal temperature heat exchanger 21, regenerator 22, non-normal temperature heat exchanger 23, thermal buffer tube 24 and the second normal temperature heat exchanger 25; Four elementary cells are all equipped with adjusting means, and adjusting means is connected inertia tube 32 and air reservoir 33;
When there is no adjusting means inertia tube 32 and air reservoir 33, Figure 1 shows that traditional double acting traveling wave thermoacoustic engine system.By inputting heat to non-normal temperature heat exchanger 23, its temperature is raised, when in regenerator, thermograde reaches certain value, system can originate from sharp pressure vibration, and pressure wave promotes linear electric motors and moves back and forth mechanical energy is converted to electric energy, outwardly exports electric work.If do not have adjusting means inertia tube 32 and air reservoir 33, because processing and the trickle differential pressure of assembling between each elementary cell of engine, the non-temperature of normal temperature heat exchanger 23, the output voltage of motor and electric current will there will be inconsistent phenomenon.The temperature of some unit can raise extremely, and some motor ranges can increase extremely, easily cause the damage of parts.
In order to solve the inconsistent problem of service behaviour, all installed adjusting means in four elementary cells, adjusting means is made up of inertia tube 32 and air reservoir 33; Adjusting means is arranged between the compression chamber 12 of normal temperature heat exchanger 21 and linear electric motors, and adjusting means has the effect of dissipation sound merit, simultaneously can control phase relation.By regulating the size etc. of the length of inertia tube, diameter, air reservoir that sound power consumption herein can be regulated to fall apart and phase relation, thus four elementary cells unanimously being worked, suppressing self-oscillatory generation simultaneously.
In the present embodiment, if input electric work (stopping inputting heat to non-normal temperature heat exchanger 23) in linear electric motors 1 simultaneously, then the temperature of non-normal temperature heat exchanger 23 will decline, and system transition is a double acting row ripple thermoacoustic refrigeration system; Further by the expansion chamber 11 in Fig. 2 and compression chamber 12 switch, this system then becomes an adjustable double acting heat pump, and double acting row ripple thermoacoustic refrigeration system, this is no longer going to repeat them.
Fig. 3 is the structural representation of adjustable double acting (two-stage) row ripple hot sound refrigerating machine (embodiment 3) in adjustable double acting row ripple thermoacoustic system of the present invention; It is made up of three elementary cells, and each elementary cell comprises linear electric motors 1 and Sonic heat changing parts 2.Sonic heat changing parts 2 are made up of the first normal temperature heat exchanger 21, regenerator 22, non-normal temperature heat exchanger 23, thermal buffer tube 24 and the second normal temperature heat exchanger 25; Regenerator 22 amount of being divided into two sections, the junction of two sections is connected with another non-normal temperature heat exchanger 23 ' in addition, another thermal buffer tube 24 ' and the second normal temperature heat exchanger 25 '; Adjusting means is valve (31,31 '), is arranged on respectively between the second normal temperature heat exchanger 25 and expansion chamber 11 and between the second normal temperature heat exchanger 25 ' and expansion chamber 11 '; The double acting low-temperature thermoacoustic refrigerator of two-layer configuration is conducive to obtaining lower cryogenic temperature.
Similar to Example 1, when there is no adjusting means valve 31 and 31 ', work inconsistent between motor in the refrigerator system shown in Fig. 3, non-normal temperature heat exchanger 23 and 23 ' temperature lower time, can there is self-oscillation in system, system cannot steady operation.After having had adjusting means valve 31 and 31 ', the loose and phase adjusted by suitable sound power consumption, three elementary cells can as one man work, and self-oscillation simultaneously can be effectively suppressed.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments 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 (5)
1. an adjustable double acting row ripple thermoacoustic system, it is made up of double acting row ripple thermoacoustic system and at least one adjusting means, and described adjusting means is arranged in the connecting pipe between the compressor of double acting row ripple thermoacoustic system and Sonic heat changing parts; Described adjusting means is valve, inertia tube, air reservoir or its combination.
2., by adjustable double acting row ripple thermoacoustic system according to claim 1, it is characterized in that, described double acting row ripple thermoacoustic system is double acting thermo-acoustic engine system, double acting thermoacoustic refrigeration system or double acting heat pump.
3., by adjustable double acting row ripple thermoacoustic system according to claim 2, it is characterized in that, described double acting thermo-acoustic engine system is single-stage double acting thermo-acoustic engine system or multistage double acting thermo-acoustic engine system.
4., by adjustable double acting row ripple thermoacoustic system according to claim 2, it is characterized in that, described double acting thermoacoustic refrigeration system is single-stage double acting thermoacoustic refrigeration system or multistage double acting thermoacoustic refrigeration system.
5., by adjustable double acting row ripple thermoacoustic system according to claim 2, it is characterized in that, described double acting heat pump is single-stage double acting heat pump or multistage double acting heat pump.
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| CN201310359089.6A CN103411359B (en) | 2013-08-16 | 2013-08-16 | A kind of adjustable double acting row ripple thermoacoustic system |
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| CN103411359B true CN103411359B (en) | 2015-11-04 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103758715B (en) * | 2014-01-13 | 2016-06-01 | 中科力函(深圳)热声技术有限公司 | Thermoacoustic engine system |
| CN104792002A (en) * | 2014-01-17 | 2015-07-22 | 中国科学院理化技术研究所 | Boiled water heating system using double-acting thermo-acoustic heat pump as heater |
| CN103758657B (en) * | 2014-01-21 | 2015-05-06 | 中国科学院理化技术研究所 | Acoustic resonance type traveling wave thermo-acoustic power generating system |
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