CN1328507C - Coaxial thermoacoustic driving power generation system - Google Patents
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Abstract
The invention relates to a coaxial thermoacoustic power generation system, which comprises a thermoacoustic Stirling engine and a generator which are arranged in the same shell; the thermoacoustic Stirling engine is of a coaxial structure and comprises a thermal buffer cavity, a heater, a heat regenerator, a room temperature heat exchanger, a capacitive cavity and a phase modulation part which are sequentially and coaxially sleeved on the cavity wall of the thermal buffer cavity or coaxially arranged in the cavity of the thermal buffer cavity, and another room temperature heat exchanger positioned in the thermal buffer cavity, wherein the other room temperature heat exchanger is tightly matched with the cavity wall of the thermal buffer cavity and divides the cavity into two sections; the phase modulation part is an inertia tube or a phase modulation elastic membrane; one end of the inertia tube is connected with the capacitive cavity, the other end of the inertia tube is connected with the thermal buffer cavity, the phase modulation elastic diaphragm is an elastic diaphragm arranged at the end part of the capacitive cavity, the mass of the phase modulation elastic diaphragm is 5-2000 g, and the tension of the phase modulation elastic diaphragm is 10-1～2×104N/m2. Its advantage does: the thermoacoustic Stirling engine with the coaxial structure is combined with the linear generator, the input heat energy is directly converted into electric energy, the structure is compact, and the occupied space is greatly reduced.
Description
Technical field
The present invention relates to a kind of is the device of electric energy with thermal power transfer, specially refers to the hot acoustic Stirling motor of coaxial type and combines with linear electric generator, the enough devices that directly is converted to electric energy in generator of sound function that make hot acoustic Stirling motor output.
Background technique
Stirling engine is the very high energy conversion device of a kind of thermal efficiency, and in theory, the Stirling circulation can reach the identical thermodynamic efficiency of Carnot's cycle.Traditional Stirling engine structure as shown in Figure 1, C is a piston among the figure, 1 is system shell, 2 is heater, 3 is regenerator, 4 is the room temperature heat exchanger, 12 is discharger, 14 is seal ring.Stirling engine is controlled flowing of internal gas by the reciprocating phase place of regulating piston C and discharger 12, and this needs very complicated phase modulation apparatus, very high machining accuracy, and therefore, the reliability of Stirling engine is not high.Fig. 2 is the Stirling engine of a kind of being referred to as " free-piston ", and C is a piston among the figure, and 1 is system shell, and 2 is heater, and 3 is regenerator, and 4 is the room temperature heat exchanger, and 8 is generator coil, and 9 is magnet, and 11 is gas spring, and 12 is discharger.It is with the merit of the form output conversion of electric energy.Though its phase modulation apparatus has had very big simplification, but because this Stirling engine needs a discharger 12 that connects high temperature and room temperature, and between discharger and the cylinder good sealability must be arranged, there are material property and problems such as processing technology height, manufacture cost costliness.For above-mentioned reasons, Stirling engine is mainly used in fields such as Aero-Space, military affairs at present, does not obtain large-scale application as yet at civil area.
The notion of hot acoustic Stirling motor is at first at first proposed by the Ceperley of U.S. Geoge Mason university.He recognizes that at first the go together phase place of ripple of the phase place of pressure wave in the Stirling engine regenerator and speed wave is consistent, proposes to come the motion of control gaseous and the pressure of gas with sound wave.At present usually the hot acoustic Stirling engine structure of research as shown in Figure 3,2 is heater among the figure, 3 is regenerator, 4 is the room temperature heat exchanger, 5 is inertia pipe, 6 is capacitive pipe, 7 is resonatron, 13 is resonator.Can see that hot acoustic Stirling motor has not had any moving element.Import heat by heater to system, and cool off at the room temperature heat exchanger, when the temperature gradient at the regenerator place reached certain value, self oscillations will take place in intrasystem gas, was mechanical energy with thermal power transfer.Hot acoustic Stirling motor in fact also is a kind of Stirling engine, and just it has substituted mechanical piston with gas piston.Hot acoustic Stirling engine start facility have very outstanding advantage: movement-less part, stable and reliable operation, long service life; Use hotwork to be the energy, can utilize solar energy, used heat etc. as driving source, this is very meaningful for the occasion that electric power lacks; It as working medium, helps environmental protection with inert gas in addition, so have boundless development prospect.But the research of present hot acoustic Stirling motor is also little ripe, also have two very big difficulties to overcome from entering the practicability stage: the first, hot acoustic Stirling engine start machine system architecture is very huge, resonatron reaches several meters, row ripple loop is also compact inadequately, need take very big space; The second, at present the sound material gain of changing out for thermoacoustic engine mainly is directly to utilize oscillating air flow driving hot sound refrigerating machine and vascular refrigerator with considerably less basically.The sound merit is a kind of very form of energy of good utilisation not, and wanting extensively to utilize thermoacoustic effect the sound merit must be converted at first that electricity is this can widely used form of energy.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, hot acoustic Stirling engine design is become the coaxial type structure, the mover of generator is designed to structure of linear motion, with the sound merit pushing generator piston motion of motor output, thus the hot sound-driving power generation system that a kind of compact in design, reliability height is provided, is easy to promote.
Technological scheme of the present invention is as follows:
Coaxial type heat and acoustic power generating system provided by the invention comprises a hot acoustic Stirling motor A and a generator (B); It is characterized in that: described hot acoustic Stirling motor A and generator B are installed in the same shell 1; Described hot acoustic Stirling motor A is the hot acoustic Stirling motor of coaxial configuration, comprise a heat buffering cavity 7 and successively coaxial package on heat buffering cavity 7 chamber walls or a coaxial room temperature heat exchanger 4 that is installed in heater 2, regenerator 3, room temperature heat exchanger 4, capacitive pipe 6 and the phase modulation parts in heat buffering cavity 7 chambeies and is positioned at heat buffering cavity 7 ', this room temperature heat exchanger 4 ' closely cooperate with the chamber wall of heat buffering cavity 7, and heat buffering cavity 7 is divided into two sections; Described phase modulation parts are inertia pipe 5 or phase modulation flexible sheet E; Inertia pipe 5 one termination capacitive pipes 6, another termination heat buffering cavity 7, phase modulation flexible sheet E are one to be installed in the flexible sheet of capacitive pipe 6 ends, and its quality is 5～2000 grams, and its tension force is 10
-1～2 * 10
4N/m
2
Described generator B is the linear electric generator of motion structure that its design of moving is in line; 1 on generator piston C and shell be sealed into microgap sealing or welded bellows sealing; The sealing of described microgap is meant that the gap between piston C and shell 1 inwall is the 0.01-0.30 millimeter; Described welded bellows sealing is that a bellows 10 1 ends are fixed on the inwall of shell 1, and the other end is fixed on generator piston C near on the end face of thermoacoustic engine A one side; Described generator piston C has an extension, and the moving element of this generator is installed on it; The sound merit of described hot acoustic Stirling motor A acts on generator piston C near on the end face of hot acoustic Stirling motor A one side, with pushing generator piston C and be installed in moving element motion on the generator piston C.
Described generator B is moving-magnetic type or moving coil generator; Be installed in moving element on the generator piston C in the described moving-magnetic type generator and comprise magnet 9 and the connected element that magnet 9 and generator piston C are connected together, generator coil 8 is installed on the shell 1; Be installed in moving element on the generator piston C in the described moving coil generator and comprise coil 8 and the connected element that coil 8 and generator piston C are connected together, generator magnet 9 is installed on the shell 1.
Described generator piston C and be installed in the quality of the moving element on the generator piston C and be 0.1～20Kg, the pressure of the sealing gas of generator piston C both sides is 1～10MPa.
Install one additional and suppress direct current flexible sheet D in described and capacitive pipe 6 that inertia pipe 5 links to each other, its quality is between 5～500 grams, and its tension force is 10
-1～10
4N/m
2Between.
The invention has the advantages that, to adopt the hot acoustic Stirling motor of coaxial configuration design to combine with linear electrical generator, with the heat energy of input be directly changed into can widely used electric energy form, compare with existing hot acoustic Stirling motor simultaneously, the sound-driving power generation system structure compactness of heat provided by the invention, occupation space reduces greatly.
Description of drawings
Fig. 1 is traditional Stirling engine structural representation;
Fig. 2 is the free piston stirling engine structural representation;
Fig. 3 is that traditional traveling wave thermoacoustic engine drives row ripple hot sound refrigerating machine structural representation;
Fig. 4 is sound-driving power generation system embodiment's 1 schematic representation of coaxial-type heat provided by the invention;
Fig. 5 is sound-driving power generation system embodiment's 2 schematic representation of coaxial-type heat provided by the invention;
Fig. 6 is sound-driving power generation system embodiment's 3 schematic representation of coaxial-type heat provided by the invention;
Fig. 7 is sound-driving power generation system embodiment's 4 schematic representation of coaxial-type heat provided by the invention;
Fig. 8 is for adding the working principle schematic representation of a piston in the middle of the standing wave tube.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
Coaxial type heat and acoustic power generating system provided by the invention is made up of a hot acoustic Stirling motor A and a linear electric generator B who is designed to coaxial configuration.This hot acoustic Stirling motor A and generator are installed in the same shell 1.Wherein, the hot acoustic Stirling motor A of coaxial configuration, comprise heat buffering cavity 7, be installed in the room temperature heat exchanger 4 of heat buffering cavity 7 inside ' and heater 2, regenerator 3, room temperature heat exchanger 4, capacitive pipe 6, the phase modulation parts of arranged in co-axial alignment successively.One isolated tube 15 coaxial with shell is installed in thermoacoustic engine, and heater 2, regenerator 3, room temperature heat exchanger 4, capacitive pipe 6 and phase modulation parts are installed in the isolated tube 15 or are installed between isolated tube 15 and the shell 1.In the time of in above-mentioned parts are installed on isolated tube 15, heat buffering cavity 7 is between isolated tube 15 and shell 1; When above-mentioned parts were installed between isolated tube 15 and the shell 1, heat buffering cavity 7 was positioned at isolated tube 15.The phase modulation parts are installed in the end near engine piston C, and heater 2 is installed in the other end and leaves certain clearance with system shell 1 bottom.Electrical energy conversion device among the present invention adopts linear motor, promptly the design of moving of the generator motion structure that is in line.The sound merit of hot acoustic Stirling motor A output is drawn out on the generator piston C, and the pushing generator mover is done straight reciprocating motion, the output electric energy.In the present invention, piston C plays the effect that the working gas in thermoacoustic engine and the generator is isolated mutually, it also has the effect of regulating system frequency simultaneously, by changing generator piston and the quality of moving element and the pressure of piston both sides gas, can change the resonant frequency of system.
Four preferred embodiments of the present invention have hereinafter been described respectively.
Embodiment 1
As shown in Figure 4, adopt among the embodiment 1 heat buffering cavity 7 is placed the interior mode of isolated tube 15.Be installed on the heater 2 between isolated tube 15 and the shell, regenerator 3, room temperature heat exchanger 4 closely cooperate with the side inner walls of isolated tube 15 outer walls and shell 1.Be installed on room temperature heat exchanger 4 in the heat buffering cavity 7 ' closely cooperate with isolated tube 15 inwalls.The shell 1 at capacitive pipe 6 places is thinner, therefore the volume of capacitive pipe 6 is bigger, the phase modulation parts adopt traditional inertia pipe, this place's shell 1 is thicker, therefore inertia pipe is comparatively long and narrow, such inertia pipe matches with capacitive pipe 6, can better realize its phase modulation function, and this phase modulation function is to realize by the inertia pipe of changing different length.Present embodiment has also been installed suppression flexible sheet D in capacitive pipe 6, its effect is to suppress heat sound direct current, improves efficiency of engine.This suppression flexible sheet D is that a quality is 10 grams, and elasticity coefficient is the flexible sheet of 50N/m, and it can allow sound wave to pass through when suppressing heat sound direct current.The linear electric generator B of present embodiment adopts moving-coil structure, and promptly motor coil and piston C are fixed together, and magnet is installed on system shell 1 inwall.The sealing means of piston C and shell is the microgap sealing in the present embodiment, and promptly 1 micro-gap that only leaves the 1-10 silk of piston C and shell when piston is done the high frequency to-and-fro motion, can be considered as piston both sides gas to isolate mutually.Because the more traditional Stirling engine height of hot acoustic Stirling motor A operation frequency, so the clearance seal requirement is relatively low, processing is easier to.Wherein the quality of mover (be piston with the quality that is installed in the moving element on the piston and) is 3kg, and the pressure of the sealing gas of both sides is 3MPa.
As shown in Figure 5, adopt among the embodiment 2 heat buffering cavity 7 is placed the interior mode of isolated tube 15.Be installed on the heater 2 between isolated tube 15 and the shell, regenerator 3, room temperature heat exchanger 4 closely cooperate with the side inner walls of isolated tube 15 outer walls and shell 1.Be installed on room temperature heat exchanger 4 in the heat buffering cavity 7 ' closely cooperate with isolated tube 15 inwalls.Near the end of piston C phase modulation flexible sheet E is installed at capacitive pipe 6, this diaphragm quality is 20 grams, and tension force is 200N/m
2The flexible sheet of changing different quality and tension force can change the phase place of system as the phase modulation flexible sheet.The linear electric generator B of present embodiment adopts the moving-magnetic type structure, and promptly motor magnet and piston C are fixed together, and coil is installed on system shell 1 inwall.The sealing means of piston C and shell is the microgap sealing in the present embodiment, and promptly 1 micro-gap that only leaves 10 of piston C and shell when piston is done the high frequency to-and-fro motion, can be considered as piston both sides gas to isolate mutually.Because the more traditional Stirling engine height of hot acoustic Stirling motor A operation frequency, so the clearance seal requirement is relatively low, processing is easier to.Wherein the quality of mover (be piston with the quality that is installed in the moving element on the piston and) is 5kg, and the pressure of the sealing gas of both sides is 10MPa.
As shown in Figure 6, adopt among the embodiment 3 heat buffering cavity 7 is placed mode between isolated tube 15 and the shell.The heater 2, regenerator 3, the room temperature heat exchanger 4 that are installed in the isolated tube 15 closely cooperate with isolated tube 15 inwalls.Be installed on room temperature heat exchanger 4 in the heat buffering cavity 7 ' closely cooperate with isolated tube 15 outer walls and shell side inner walls.The active chamber cross section at capacitive pipe 6 places is bigger, therefore the volume of capacitive pipe 6 is bigger, the phase modulation parts adopt traditional inertia pipe, the inertia pipe place, the active chamber cross section is less, so inertia pipe is comparatively long and narrow, and such inertia pipe matches with capacitive pipe 6, can better realize its phase modulation function, this phase modulation function is to realize by the inertia pipe of changing different length.Present embodiment has also been installed the flexible sheet D that suppresses direct current in capacitive pipe 6, its effect is to suppress heat sound direct current, improves efficiency of engine.This suppression flexible sheet D is the very little flexible sheet of a quality, and this diaphragm quality is 15 grams, and tension force is 40N/m
2, it can allow sound wave to pass through when suppressing heat sound direct current.The linear electric generator B of present embodiment adopts moving-coil structure, and promptly motor coil and piston C are fixed together, and magnet is installed on the inwall of system shell 1.The sealing means of piston C and shell is the welded bellows sealing in the present embodiment.Welding ripple one end is fixed on the shell 1, and the other end is fixed on engine piston C near on the end face of thermoacoustic engine one side, and with the strict isolation of the working gas of motor and generator, bellows moves reciprocatingly with piston C during work.Wherein the quality of mover (be piston with the quality that is installed in the moving element on the piston and) is 2kg, and the pressure of the sealing gas of both sides is 2.5MPa.
As shown in Figure 7, adopt among the embodiment 4 heat buffering cavity 7 is placed mode between isolated tube 15 and the shell.The heater 2, regenerator 3, the room temperature heat exchanger 4 that are installed in the isolated tube 15 closely cooperate with isolated tube 15 inwalls.Be installed on room temperature heat exchanger 4 in the heat buffering cavity 7 ' closely cooperate with isolated tube 15 outer walls and shell side inner walls.Near the end of piston C phase modulation flexible sheet E is installed at capacitive pipe 6, this diaphragm quality is 40 grams, and elasticity coefficient is 700N/m.The flexible sheet of changing different quality and tension force can change the phase place of system as the phase modulation flexible sheet.The linear electric generator B of present embodiment adopts the moving-magnetic type structure, and promptly the motor magnet is installed on the piston C, and coil is installed on system shell 1 inwall.The sealing means of piston C and shell is the welded bellows sealing in the present embodiment.Welding ripple one end is fixed on the shell 1, and the other end is fixed on engine piston C near on the end face of thermoacoustic engine one side, and with the strict isolation of the working gas of motor and generator, bellows moves reciprocatingly with piston C during work.Wherein the quality of mover (be piston with the quality that is installed in the moving element on the piston and) is 1kg, and the pressure of the sealing gas of both sides is 2MPa.
Four preferred embodiments of the present invention have below been described respectively.These embodiments are structurally different, but its working principle is consistent.Narrate working procedure of the present invention and principle thereof below.
During work, at first in thermoacoustic engine and generator, charge into (gas) working medium, when charging into working medium, should keep the pressure at motor internal dielectric membrane sheet (comprising phase modulation flexible sheet E and suppression flexible sheet D) two ends equal substantially, in order to avoid flexible sheet is damaged.After working medium charged into and finishes, at thermoacoustic engine heater 2 places inputs heat, cooled off at 4 places at the room temperature heat exchanger, makes regenerator 3 two ends formation temperature gradients, and when temperature gradient reached certain value, working medium produced the thermal acoustic oscillation of self-excitation; The thermal acoustic oscillation of self-excitation is that sound wave is propagated from regenerator 3, through heater 2 and heat buffering cavity, and the room temperature heat exchanger 4 in the arrival heat buffering cavity ', this room temperature heat exchanger 4 ' working medium is cooled off; Sound wave is from this room temperature heat exchanger 4 ' back separated into two parts that comes out, and a part promotes piston C acting, and another part feeds back to regenerator 3 through inertia pipe (flexible sheet that perhaps has certain mass), capacitive pipe 6, room temperature heat exchanger 4.
The gas of generator piston both sides is owing to be in sealing state, and when the piston move left and right, the gas of a side is stretched, and the gas of opposite side is compressed, so the two all can produce restoring force to piston, thereby has played the effect of spring.The oscillation frequency of the elasticity decision systems of the sealing gas of mover quality and piston both sides, the pressure of gas are between 1～10MPa, and the quality of mover (be piston and the quality that is installed in the moving element on the piston and) is between 0.1～20Kg.The working principle of generator is consistent with general linear electric generator, for well known to a person skilled in the art technology.
The hot acoustic Stirling motor (as Fig. 3) that the hot acoustic Stirling motor of coaxial configuration among the present invention is more traditional, its main distinction is, traditional hot acoustic Stirling motor comes the oscillation frequency of control system by resonatron length, the oscillation frequency of mainly coming control system by the quality of generator mover and the spring that is attached thereto (can be gas spring) of this patent.Having used two kinds of flexible sheets among the present invention, is respectively suppression flexible sheet D and phase modulation flexible sheet E, and wherein suppression flexible sheet D is mainly used to eliminate heat sound direct current, and phase modulation flexible sheet E substitutes inertia pipe and capacitive pipe 6 is regulated the pressure wave phase place together.The working principle of these two kinds of flexible sheets is described below:
The pressure of supposing the diaphragm both sides is P
1And P
2, the quality of flexible sheet is m, and elasticity coefficient is K, and the cross-section area of flexible sheet is S
1, the resonance angular frequency of system is ω, then has:
(P
1-P
2)S
1＝Kx+mx″ (1)
Wherein: x is the displacement amount of flexible sheet, x " for the second dervative of displacement (1) formula can further be write as following form:
(P
1-P
2)S
1＝(K-mω
2)x (2)
When diaphragm mainly works the time spent of doing of eliminating heat direct current, require the minimum that influences, so as K=m ω to acoustic wave propagation
2The time optimum, this moment, the pressure of flexible sheet both sides equated, that is to say that this moment, sound wave by diaphragm any influence did not take place.When practical application, be difficult to accomplish K=m ω
2, but also to consider that certain elasticity may have attenuation to sound wave, so in the middle of practical application, select the little diaphragm of light weight elasticity coefficient.
When diaphragm works the time spent of doing that substitutes inertia pipe, suitably regulating elasticity coefficient K and quality m, just can to obtain different pressure phase poor.
The ingenious generator mover shortening resonatron that utilizes also has theoretic foundation.In standing wave tube shown in Figure 8, add piston below and be the example open piston quality to the influence of frequency in managing.Piston is divided into two ends with pipeline, and left side pipeline is designated as pipeline 1, and defining its left end is true origin, and the right pipeline is designated as pipeline 2, defines its left end and is another true origin.
Acoustic pressure is designated as: P (x)=Le
Ikx+ He
-ikx(3)
Then particle velocity is:
Wherein L, H are undetermined coefficient.
According to formula (3), (4),
Left end at pipeline 1 has: L
1-H
1=0 (5)
Right-hand member at pipeline 2 has: L
2e
IkL-H
2e
-ikL=0 (6)
Two ends, piston left and right sides speed equates, then has: L
1e
IkL-H
1e
-ikL=L
2-H
2(7)
The pressure difference at two ends, the piston left and right sides equals the quality of piston and seizing the opportunity of acceleration, then has:
Wherein ω is an angular frequency, ρ
0Be the gas averag density, k is a wave number, S
2Be piston area, M is a piston mass, L
1, L
2, H
1, H
2For undetermined coefficient, L is the length of pipeline 1 (pipeline 2).Simultaneous (5) (6) (7) (8) can get:
ωMsin(kL)-2ρ
0a
0S
2cos(kL)＝0 (9)
A wherein
0Be the gas velocity of sound.Solving equation (9) can obtain the minimum positive number of ω and separate, so calculate the pipe in fundamental frequency.
Suppose in the pipe to be an atmospheric air, pipe length overall 0.5m, when not adding flexible sheet, the frequency of gas vibration should be 28.7Hz in the pipe.If central authorities add a piston at pipe, cross-section of pipeline is long-pending to be 0.1m
2, the oscillation frequency when table 1 has calculated different quality in the pipe.
Table 1
| Quality/kg | 0 | 0.5 | 1 | 1.5 | 2 |
| Frequency/Hz | 344 | 35.276 | 25.91 | 21.418 | 18.679 |
As can be seen from Table 1, the quality that increases piston can reduce system frequency, and that therefore resonatron can be done in design is very short, the resonant frequency that the logical quality that changes piston still can obtain to want.
Claims (4)
1, a kind of coaxial type heat and acoustic power generating system comprises a hot acoustic Stirling motor (A) and a generator (B); It is characterized in that: described hot acoustic Stirling motor (A) and generator (B) are installed in the same shell (1); Described hot acoustic Stirling motor (A) is the hot acoustic Stirling motor of coaxial configuration, comprise a heat buffering cavity (7) and successively coaxial package on the wall of heat buffering cavity (7) chamber or coaxially be installed in heater (2), regenerator (3), room temperature heat exchanger (4), capacitive pipe (6) and the phase modulation parts heat buffering cavity (7) chamber in and be positioned at a room temperature heat exchanger (4 ') of heat buffering cavity (7), this room temperature heat exchanger (4 ') closely cooperates with the chamber wall of heat buffering cavity (7), and heat buffering cavity (7) is divided into two sections; Described phase modulation parts are inertia pipe (5) or phase modulation flexible sheet (E); Inertia pipe (5) one termination capacitive pipes (6), another termination heat buffering cavity (7), phase modulation flexible sheet (E) are one to be installed in the flexible sheet of capacitive pipe (6) end, and its quality is 5～2000 grams, and its tension force is 10
-1～2 * 10
4N/m
2
Described generator (B) is the linear electric generator of motion structure that its design of moving is in line; Be sealed into microgap sealing or welded bellows sealing between generator piston (C) and shell (1); The sealing of described microgap is meant that the gap between piston (C) and shell (1) inwall is the 0.01-0.30 millimeter; Described welded bellows sealing is that a bellows (10) one ends are fixed on the inwall of shell (1), and the other end is fixed on generator piston (C) near on the end face of thermoacoustic engine (A) side; Described generator piston (C) has an extension, and the moving element of this generator is installed on it; The sound merit of described hot acoustic Stirling motor (A) acts on generator piston (C) near on the end face of hot acoustic Stirling motor (A) side, with pushing generator piston (C) and be installed in moving element motion on the generator piston (C).
2, by the described coaxial type heat and acoustic power generating system of claim 1, it is characterized in that described generator (B) is moving-magnetic type or moving coil generator;
The moving element that is installed in the described moving-magnetic type generator on the generator piston (C) comprises magnet (9) and the connected element that magnet (9) and generator piston (C) are connected together, and generator coil (8) is installed on the shell (1);
The moving element that is installed in the described moving coil generator on the generator piston (C) comprises coil (8) and the connected element that coil (8) and generator piston (C) are connected together, and generator magnet (9) is installed on the shell (1).
3, by the described coaxial type heat and acoustic power generating system of claim 1, it is characterized in that, described generator piston (C) and be installed in the quality of the moving element on the generator piston (C) and be 0.1～20Kg, the pressure of the sealing gas of generator piston (C) both sides is 1～10MPa.
4, by the described coaxial type heat and acoustic power generating system of claim 1, it is characterized in that, in described and capacitive pipe (6) that inertia pipe (5) links to each other, install an inhibition direct current flexible sheet (D) additional, its quality 5～500 restrain between, its tension force is 10
-1～10
4N/m
2Between.
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| CN100572986C (en) * | 2006-03-24 | 2009-12-23 | 中国科学院理化技术研究所 | Thermal driving traveling wave thermoacoustic refrigerating device with coaxial structure by utilizing solar energy |
| CN101275541B (en) * | 2007-03-27 | 2011-08-31 | 中国科学院理化技术研究所 | Thermoacoustic traveling wave engine and application thereof |
| US7511459B2 (en) * | 2007-06-11 | 2009-03-31 | Sunpower, Inc. | Controller computing a virtual tuning capacitor for controlling a free-piston stirling engine driving a linear alternator |
| CN103147947B (en) * | 2011-12-06 | 2015-04-01 | 中国科学院理化技术研究所 | thermoacoustic generator |
| CN104786864B (en) * | 2015-04-20 | 2017-04-12 | 中国科学院理化技术研究所 | Range-extending type electric automobile system adopting thermoacoustic generator |
| CN110701012B (en) * | 2018-07-09 | 2022-04-08 | 中国科学院理化技术研究所 | Thermoacoustic engine |
| CN110701011B (en) * | 2018-07-09 | 2021-10-29 | 中国科学院理化技术研究所 | Thermoacoustic engine |
| CN109600012A (en) * | 2018-12-07 | 2019-04-09 | 哈尔滨工程大学 | A kind of solid thermoacoustic power generator |
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| CN1746494A (en) | 2006-03-15 |
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