JP4652821B2 - Thermoacoustic device - Google Patents

Description

  The present invention relates to a thermoacoustic apparatus capable of cooling an object to be cooled using a thermoacoustic effect or heating an object to be heated, and more specifically, amplifies sound energy generated in a tube. also it relates to a thermoacoustic device capable of efficiently converting from the amplified sound energy into heat energy.

  With respect to heat exchange apparatus using the acoustic effect, there are those described in Patent Document 1 below.

The apparatus described in Patent Document 1 includes a loop-shaped resonance tube whose circumference is an integral multiple of the wavelength of a sound wave, a plurality of speakers arranged at intervals of an odd multiple of a quarter wavelength of the sound wave, and these Sound wave generation control means for making the phase of the sound wave emitted from the speaker differ by an odd multiple of a quarter period, and a cold storage member disposed at a predetermined position in the loop-shaped resonance tube. Only the sound wave traveling in one direction is left in the resonance tube, and the amplitude of the sound wave is amplified in the same manner as the resonance. According to this thermoacoustic apparatus, the sound wave emitted from each speaker travels in two directions in the loop-shaped resonance tube, and at that time, the waves in one direction are superimposed and amplified depending on the interval at which the speakers are arranged, and The other direction can be canceled with waves having opposite phases, and a sound wave amplified only in one direction can be generated.
JP-A-10-325625

  By the way, since the apparatus described in patent document 1 inputs a sound wave using a speaker, it cannot cool a cooling target object using waste heat etc. Further, in the structure in which the speaker is attached to the outside of the tube as in Patent Document 1, the sound wave of the speaker is reflected by the outer peripheral portion of the tube, and a stable sound wave cannot be input into the tube. When the speaker is attached in the vicinity of the tube, the entire tube vibrates in the same manner as the speaker, and the sound waves in the tube cannot be canceled well.

  Therefore, the present invention has been made paying attention to the above problems, and an object thereof is to provide a thermoacoustic apparatus capable of reliably generating large standing waves and traveling waves in a tube.

For the present invention to solve the above problems, a tube working fluid is sealed, a first heat exchanger comprising a first stack sandwiched between the first high-temperature-side heat exchanger and the first low-temperature heat exchanger and vessels, it comprises a and a second high-temperature-side heat exchanger and the second heat exchanger comprising a second stack sandwiched between the second low-temperature heat exchanger, the first high-temperature-side heat exchanger By generating high-temperature heat, a self-excited standing wave and traveling wave are generated, and the second low-temperature side heat exchanger is cooled by the standing wave and traveling wave to output the heat , or By inputting low temperature heat to the first low temperature side heat exchanger, a standing wave and a traveling wave are generated by self-excitation, and the second high temperature side heat exchanger is heated by the standing wave and the traveling wave to a thermoacoustic device that outputs heat the same structure and said first heat exchanger and the second heat exchanger The first heat exchanger and the second heat exchanger are provided at a plurality of positions in the vicinity of the position where the particle velocity fluctuation and the sound pressure fluctuation of the sound wave in the pipe are in phase, and the first heat exchanger and the second heat exchanger By selecting heating / cooling of the heat exchanger, heat is input to the plurality of first heat exchangers and output from the second heat exchanger, or heat is input to the first heat exchanger. The heat is output from the plurality of second heat exchangers by inputting .

With this configuration, if a stack sandwiched between the high-temperature side heat exchanger and the low-temperature side heat exchanger is attached in the vicinity of the position where the particle velocity fluctuation and the sound pressure fluctuation are in phase, the heat input By simply selecting the position and the heat output position, the number of stacks on the sound wave generation side and the number of stacks on the heat output side can be increased or decreased.

In such an invention, a variable mechanism for changing the position of the first heat exchanger or the second heat exchanger is provided for the pipe.

As one aspect of this, the first heat exchanger or the second heat exchanger may be attached to a part of the pipe, and the part of the pipe may be configured to be slidably separated from the main body of the pipe. it can.

In the present invention, a tube working fluid is sealed, a first heat exchanger comprising a first stack sandwiched between the first high-temperature-side heat exchanger and the first low-temperature heat exchanger, the second hot side it comprises a and a second heat exchanger comprising a second stack sandwiched between the heat exchanger and the second low-temperature heat exchanger, to enter the high-temperature heat to the first high-temperature-side heat exchanger To generate a standing wave and a traveling wave by self-excitation, and to cool the second low-temperature side heat exchanger by the standing wave and the traveling wave and output the heat , or to the first low-temperature side heat exchanger A thermoacoustic apparatus that generates a standing wave and a traveling wave by self-excitation by inputting low-temperature heat to the second heat, and heats the second high-temperature side heat exchanger by the standing wave and the traveling wave to output the heat. The first heat exchanger and the second heat exchanger have the same configuration, and the first heat exchanger Two or more heat exchangers are installed near the position where the particle velocity fluctuation and sound pressure fluctuation of the sound wave in the pipe are in phase, and heating and cooling of the first heat exchanger and the second heat exchanger are selected. Heat is input to the plurality of first heat exchangers and heat is output from the second heat exchanger, or heat is input to the first heat exchanger and a plurality of second heats are input. Since heat is output from the exchanger, the number of stacks on the sound wave generation side and the number of stacks on the heat output side can be increased or decreased simply by selecting the heat input position and the heat output position.

  Hereinafter, a first embodiment of a thermoacoustic apparatus 1 according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the thermoacoustic apparatus 1 according to this embodiment includes a first high temperature side heat exchanger 4 and a first low temperature side heat exchanger inside a loop tube 2 configured as a substantially rectangular shape as a whole. 5. A plurality of first heat exchangers 300 made up of the first stack 3a, a second high temperature side heat exchanger 6, a second low temperature side heat exchanger 7, and a plurality of second heat exchangers made up of the second stack 3b. The heat exchanger 310 is provided, and the first high temperature side heat exchanger 4 on the first heat exchanger 300 side is heated to generate a standing wave and a traveling wave by self-excitation. The sound energy generated by the standing wave and the traveling wave is transferred to the second heat exchanger 310 side by transferring the sound energy to the second heat exchanger 310 side, and converted into heat energy on the second heat exchanger 310 side. The second low temperature side heat exchanger 7 is cooled.

  In this embodiment, in order to generate a standing wave and a traveling wave having a high sound pressure in the loop tube 2, a plurality of first waves are located in the vicinity of a position where the particle velocity fluctuation of the sound wave and the sound pressure fluctuation are in phase. The heat exchanger 300 is arranged, and in order to improve the conversion efficiency from the sound energy of the standing wave and traveling wave generated in the loop tube 2 to the heat energy, the particle velocity fluctuation and the sound pressure fluctuation of the sound wave are in phase. A plurality of second heat exchangers 310 are arranged in the vicinity of the position. Hereinafter, a specific configuration of the thermoacoustic apparatus 1 will be described in detail.

  The loop tube 2 constituting the thermoacoustic device 1 is configured by providing a pair of straight tube portions 2a and a connecting tube portion 2b for connecting these straight tube portions 2a so as to form a closed curve. The straight tube portion 2a and the connecting tube portion 2b are made of metal pipes, but the material is not limited to metal, and can be made of transparent glass or resin. When it is made of a material such as transparent glass or resin, it is possible to easily confirm the positions of the first stack 3a and the second stack 3b in an experiment or the like and observe the state in the tube.

  And inside the loop pipe | tube 2 comprised in this way, the several 1st heat exchanger 300 which consists of the 1st high temperature side heat exchanger 4, the 1st low temperature side heat exchanger 5, and the 1st stack 3a. And a plurality of second heat exchangers 310 including the second high temperature side heat exchanger 6, the second low temperature side heat exchanger 7, and the second stack 3b. The plurality of first heat exchangers 300 all have the same configuration, and each second heat exchanger 310 also has the same configuration.

  The first high temperature side heat exchanger 4 and the first low temperature side heat exchanger 5 are both made of a metal having a large heat capacity, and as shown in FIG. A small-diameter conduction path 30 is provided. Among these heat exchangers 4 and 5, the first high temperature side heat exchanger 4 is attached so as to be in contact with the upper surface of the first stack 3a, and is relatively first low temperature by waste heat supplied from the outside. Heated to a temperature higher than that of the side heat exchanger 5. The first high temperature side heat exchanger 4 may be heated not only with waste heat but also with electric power supplied from the outside.

  On the other hand, the first low temperature side heat exchanger 5 is similarly attached so as to be in contact with the lower surface of the first stack 3a, and relatively circulates water or the like around its outer peripheral portion to relatively move the first high temperature side heat exchanger 4. The lower temperature, for example, 15 ° C to 16 ° C is set.

  The first stack 3a provided between the first high-temperature side heat exchanger 4 and the first low-temperature side heat exchanger 5 is a columnar shape in contact with the inner wall surface of the loop pipe 2, as shown in FIG. In addition, a plurality of stack components 3eL and 3eH having different thermal conductivities are stacked. For these stack components 3eL and 3eH, for example, materials such as ceramics, sintered metal, wire mesh, and metal nonwoven fabric are used, and the stack components 3eL having a low thermal conductivity in this order from the first high temperature side heat exchanger 4 side. , high thermal conductivity stack components 3EH, disposed lower stack components 3eL thermal conductivity. Of these stack components 3eL and 3eH, the stack component 3eH having a high thermal conductivity is configured to be thicker than the stack component 3eL having a relatively low thermal conductivity. The area where heat exchange can be performed is increased. Inside each of these stack components 3eL, 3eH, as shown in FIG. 2, a plurality of conductive paths 30 having a small diameter along the axial direction of the loop tube 2 are provided. Each of these stack components 3eL and 3eH are stacked in the vertical direction so as to be in close contact with each other. In addition, when laminating | stacking each stack structural element 3eL and 3eH in this way, when laminating | stacking using an adhesive agent, there exists a possibility that the small diameter conduction path 30 provided in the inside may be plugged up with the overflowing adhesive agent. is there. For this reason, without using an adhesive, for example, the width of the first high temperature side heat exchanger 4 and the first low temperature side heat exchanger 5 is set to the same width as the thickness width of the first stack 3a. The stack components 3eL and 3eH are sandwiched by the sandwiching force between the one high temperature side heat exchanger 4 and the first low temperature side heat exchanger 5. When the first stack 3a is provided in the straight tube portion 2a where the loop tube 2 stands, the stack components 3eL and 3eH are brought into close contact with each other by the own weight of the stack components 3eL and 3eH. .

  Further, the stack constituent elements 3eL and 3eH are made of, for example, a single material so that the thermal conductivity in the plane direction is constant. If the thermal conductivity in the plane direction is non-uniform, a temperature difference occurs between the inside and the outside of the first stack 3a, non-uniform sound waves are generated, and the generation time of the standing wave and the traveling wave is delayed. The efficiency of exchange will deteriorate. For this reason, each stack component 3eL, 3eH is comprised with a single raw material, and the heat conductivity in a plane direction is made the same.

  And the 1st heat exchanger 300 comprised by the 1st heat exchanger 300 comprised in this way, the 1st low temperature side heat exchanger 5, and the 1st stack 3a is the 1st high temperature side heat exchanger. 4 is provided in the vicinity of the position where the particle velocity fluctuation and the sound pressure fluctuation of the sound wave in the loop tube 2 are in phase with the direction of 4 unified. FIG. 4 shows a state in which the loop tube 2 is opened, and the positional relationship between the position where the particle velocity fluctuation and the sound pressure fluctuation of the sound wave are in phase, and the first heat exchanger 300 and the second heat exchanger 310. Is shown. In general, the characteristics of sound waves vary depending on the temperature difference between the first high temperature side heat exchanger 4 and the first low temperature side heat exchanger 5, the pressure in the loop tube 2, and the like. For this reason, it is good to provide the variable mechanism for changing the position of the 1st heat exchanger 300, or the pressure adjustment mechanism for adjusting the wavelength of a sound wave with a pressure. As this variable mechanism, for example, as shown in FIG. 5, a part 20 of the loop pipe to which the first heat exchanger 300 is attached is separated so as to be slidable with respect to the main body of the loop pipe 2 and separated. A mechanism for adjusting the position of the first heat exchanger 300 by sliding a part 20 of the loop tube with respect to the main body of the loop tube 2 is conceivable. Further, as the pressure adjusting mechanism, gas injection devices 9a and 9b, which will be described later, can be considered.

  Next, the operation of the first heat exchanger 300 configured as described above will be described. First, when the first high temperature side heat exchanger 4 of the first heat exchanger 300 is heated and the first low temperature side heat exchanger 5 is cooled, the first high temperature side heat exchanger 4 and the first low temperature side heat are heated. Heat is transferred toward the direction of the exchanger 5 (axial direction). At this time, the heat heated to about 600 ° C. in the first high temperature side heat exchanger 4 is transferred to the first low temperature side heat exchanger 5 through the first stack 3a. its transfer heat is inhibited by the end thermal conductivity lower stack components 3eL provided. Accordingly, the temperature difference between the first high temperature side heat exchanger 4 and the first low temperature side heat exchanger 5 can be increased without transferring the heat to the first low temperature side heat exchanger 5. On the other hand, the heat heated to about 600 ° C. by the first high temperature side heat exchanger 4 is transferred to the first low temperature side heat exchanger 5 side via the working fluid in the conduction path 30 of the first stack 3a. Is done. As a result, a temperature gradient is formed between the first high-temperature side heat exchanger 4 and the first low-temperature side heat exchanger 5, and the fluctuation of the working fluid occurs due to the temperature gradient generated in the working fluid. Sound waves are generated while exchanging heat with the stack 3a. At this time, a large heat exchange is performed with the stack component 3eH having a relatively high thermal conductivity, and sound waves can be quickly generated to improve the efficiency of the heat exchange.

  The sound wave generated in this way becomes a standing wave and a traveling wave in the loop tube 2 and is amplified by the first heat exchangers 300 at a plurality of locations. And it transfers to the 2nd heat exchanger 310 side as sound energy with a high sound pressure.

  The second heat exchanger 310 includes a second high temperature side heat exchanger 6, a second low temperature side heat exchanger 7, and a second stack 3b. The second high temperature side heat exchanger 6 and the second low temperature side heat exchanger 7 are both made of metal having a large heat capacity, and are attached to both ends of the second stack 3b in the same manner as the first stack 3a. In addition, a small-diameter conduction path 30 is provided in the interior for conducting the standing wave and the traveling wave. This 2nd high temperature side heat exchanger 6 circulates water to an outer peripheral part, and is set to 15 to 16 degreeC, for example. On the other hand, the 2nd low temperature side heat exchanger 7 has a heat output part, and can cool an external cooling target object. As this cooling target object, for example, outside air, household electrical appliances that generate heat, CPUs of personal computers, and the like are conceivable. The second stack 3b has a configuration similar to that of the first stack 3a. That is, in order from the second high temperature side heat exchanger 6 side, the stack component 3eL having a low thermal conductivity, the stack component 3eH having a high thermal conductivity, and the stack component 3eL having a low thermal conductivity are arranged in three layers. Yes. In addition, the stack component 3eH having a high thermal conductivity is configured to be thicker than the stack component 3eL having a relatively low thermal conductivity. As shown in FIG. 4, the second heat exchanger 310 configured as described above is provided in the vicinity of the position where the particle velocity fluctuation of the sound wave and the sound pressure fluctuation are in phase in the loop tube 2. Further, as shown in FIG. 5, the second heat exchanger 310 separates a part 20 of the loop pipe to which the second heat exchanger 310 is fixed so as to be slidable with respect to the main body of the loop pipe 2, The part 20 of the separated loop tube is slid with respect to the main body of the loop tube 2 and is incorporated in a mechanism for adjusting the position of the second heat exchanger 310.

Note that the first heat exchanger 300 and the second heat exchanger 310 may all have the same structure, and the first heat exchanger 300 and the second heat exchanger 310 may be used together. Good. In this case, the first high temperature side heat exchanger 4 and the first low temperature side heat exchanger 5 provided in the first heat exchanger 300 and the second high temperature side heat provided in the second heat exchanger 310 are provided. Select the heating and cooling of the metal plates of the heat exchangers 4, 5, 6, and 7 as appropriate without setting the exchanger 6 and the second low temperature side heat exchanger 7 on the high temperature side and the low temperature side in advance. The first high temperature side heat exchanger 4, the first low temperature side heat exchanger 5, the second high temperature side heat exchanger 6, and the second low temperature side heat exchanger 7 are set. In this way, when it is desired to increase the sound pressure, as shown in FIG. 7, the thermoacoustic apparatus 1b having the first heat exchanger 300 increased in number, that is, thermoacoustics having three heat input locations. If the sound pressure is sufficient and the cooling temperature is not sufficient, as shown in FIG. 8, the thermoacoustic device 1c with the increased number of second heat exchangers 310, that is, cold What is necessary is just to set it as the thermoacoustic apparatus 1c with three output locations.

  Inside the loop tube 2, helium, an inert gas such as argon is sealed. The invention is not limited to such inert gas, the working fluid, such as nitrogen or air may be enclosed. These working fluids are set to 0.01 MPa to 5 MPa.

  When such a working fluid is sealed, if helium or the like having a small Prandtl number and a small specific gravity is used, the time until the generation of sound waves can be shortened. However, when such a working fluid is used, the speed of sound increases and heat exchange cannot be performed with the inner wall of the stack. On the other hand, if argon or the like having a large Prandtl number and a large specific gravity is used, this time, the viscosity becomes high and it becomes impossible to quickly generate sound waves. For this reason, it is preferable to use a mixed gas of helium and argon. Such a mixed gas is sealed as follows.

  First, helium having a small Prandtl number and a small specific gravity is sealed in the loop tube 2 to quickly generate sound waves. Then, in order to lower the sound speed of the generated sound wave, a gas having a large Prandtl number and a large specific gravity such as argon is injected next. When mixing argon, as shown in FIG. 1, a helium gas injection device 9a and an argon gas injection device 9b are provided in the central portion of the connecting pipe portion 2b provided on the upper side, and argon is injected therefrom. Then, argon is uniformly separated into the left and right straight tube portions 2a and mixed with the internal helium downward. The pressure of these mixed gases is set to 0.01 MPa to 5 MPa.

  Next, the operation state of the thermoacoustic apparatus 1 configured as described above will be described.

  First, helium is sealed in the loop tube 2 using the helium gas injection device 9a, and in this state, the first low temperature side heat exchanger 5 of the first heat exchanger 300 and the second heat exchanger 310 of the second heat exchanger 310 are used. Water is circulated in the outer peripheral portion of the second high temperature side heat exchanger 6. In this state, the first high temperature side heat exchanger 4 of the first heat exchanger 300 is heated to about 600 ° C., and the first low temperature side heat exchanger 5 is set to about 15 to 16 ° C. Then, heat is transferred in the direction from the first high temperature side heat exchanger 4 to the first low temperature side heat exchanger 5. At this time, the heat from the first high-temperature side heat exchanger 4 is transferred to the first low-temperature side heat exchanger 5 through the members of the first stack 3a, but this heat transfer has a low thermal conductivity. It is inhibited by the presence of the stack component 3eL. Thereby, the temperature difference of the 1st high temperature side heat exchanger 4 and the 1st low temperature side heat exchanger 5 can be enlarged. On the other hand, the heat (600 ° C.) of the first high temperature side heat exchanger 4 is transferred to the first low temperature side heat exchanger 5 side by the working fluid in the conduction path 30 of the first stack 3a. As a result, a temperature gradient is formed between the first high temperature side heat exchanger 4 and the first low temperature side heat exchanger 5, and the fluctuation of the working fluid occurs due to the temperature gradient generated in the working fluid, and the first stack 3a. Sound waves are generated while exchanging heat with each other. At this time, a large heat exchange is performed with the stack constituent element 3eH which is relatively thick and has a high thermal conductivity, so that sound waves can be quickly generated and the efficiency of the heat exchange can be improved. it can. Similarly, the other first heat exchanger 300 can generate sound waves, and the plurality of first heat exchangers 300 can amplify the sound waves. The sound waves generated in this way are transferred to the second heat exchanger 310 side as sound energy by standing waves and traveling waves. This sound energy is based on the law of conservation of energy, and the direction opposite to the direction of heat energy transfer in the first heat exchanger 300 (the direction from the first high temperature side heat exchanger 4 to the first low temperature side heat exchanger 5). , i.e., it is transferred from the first low-temperature heat exchanger 5 in the direction of the first high-temperature-side heat exchanger 4.

  Immediately after the standing wave and traveling wave are generated, argon is injected from the argon gas injection device 9b provided on the upper side of the connecting pipe portion 2b, and the pressure is set to a constant pressure to improve the efficiency of heat exchange. To do.

  Next, on the second heat exchanger 310 side, the working fluid in the conduction path 30 of the second stack 3b is expanded and contracted based on the standing wave and the traveling wave. Then, the heat energy exchanged at that time is transferred in the direction opposite to the sound energy transfer direction, that is, from the second low temperature side heat exchanger 7 to the second high temperature side heat exchanger 6 side. At this time, high heat is accumulated on the second high temperature side heat exchanger 6 side, and low heat is accumulated on the second low temperature side heat exchanger 7 side. Due to these temperature differences, high heat is transferred to the second low temperature side heat exchanger 7 side via the second stack 3b, but the second high temperature side heat exchanger 6 and the second low temperature side heat exchanger are transferred. since there is provided a stack components 3eL low thermal conductivity to 7 side, the transfer of heat is inhibited. Thereby, the temperature of the 2nd low temperature side heat exchanger 7 can be made lower, and a cooling target object can be cooled more.

  The sound energy that has not been converted into heat energy by the second heat exchanger 310 passes through the conduction path 30 of the second heat exchanger 310 and is present at the second position. It is transferred to. Then, in the same manner, sound energy is converted into heat energy, and the second low temperature side heat exchanger 7 of the second heat exchanger 310 is cooled.

As described above, according to the embodiment, the loop pipe 2 in which the working fluid is sealed, and the first high temperature side heat exchanger 4 and the first low temperature side heat exchanger 5 provided in the loop pipe 2 are sandwiched. and a first heat exchanger 300 comprising a first stack 3a, a second heat exchanger comprising a second stack 3b sandwiched between the second high-temperature-side heat exchanger 6 and the second low-temperature heat exchanger 7 310, and by generating high temperature heat to the first high temperature side heat exchanger 4 , a standing wave and a traveling wave are generated by self-excitation, and a second low temperature is generated by the standing wave and the traveling wave. In the thermoacoustic apparatus 1 that cools the side heat exchanger 7 and outputs the heat, the first heat exchanger 300 and the second heat exchanger 310 have the same configuration, and the first heat exchanger 300 and the second heat exchanger 310 have the same configuration. The position at which the particle velocity fluctuation and the sound pressure fluctuation of the sound wave in the loop tube 2 are in phase with the second heat exchanger 310 By providing a plurality of locations in the vicinity and selecting heating / cooling of the first heat exchanger 300 and the second heat exchanger 310, heat is input to the plurality of first heat exchangers 300 and the second heat Since heat is output from the exchanger 310 or heat is input to the first heat exchanger 300 and heat is output from the plurality of second heat exchangers 310, the heat input position and the heat The number of stacks on the sound wave generation side and the number of stacks on the heat output side can be increased or decreased simply by selecting the output position.

  Note that the present invention is not limited to the above embodiment, and can be implemented in various forms.

For example, in the above embodiment, the thermoacoustic device 1 for cooling the second stack 3b side of heating the first stack 3a side is described as an example, conversely, the first from this The stack 3a side may be cooled to heat the second stack 3b side. An example of this thermoacoustic apparatus 1 is shown in FIG.

  In FIG. 6, those having the same reference numerals as those in the above embodiment are those having the same structure. The thermoacoustic device 1b in this embodiment includes a plurality of first heat exchangers 300 and a plurality of second heat exchangers 310, as in the first embodiment. In this embodiment, the first low temperature side heat exchanger 5 is cooled to a temperature of minus several tens of degrees or lower, and the first high temperature side heat exchanger 4 and the second low temperature side heat exchanger 5 are cooled. 7 circulate antifreeze liquid. Then, due to the principle of the thermoacoustic effect, self-excited sound waves are generated by the temperature gradient formed in the first stack 3a. The traveling direction of the sound energy of the standing wave and traveling wave is opposite to the heat energy transfer direction in the first stack 3a (the direction from the first high temperature side heat exchanger 4 to the first low temperature side heat exchanger 5). And is amplified by the other first heat exchanger 300. The sound energy due to the standing wave and traveling wave is transferred to the second stack 3b side, and on the second stack 3b side, the working fluid is caused by the pressure change and volume change of the working fluid based on the standing wave and traveling wave. The expansion and contraction are repeated, and the heat energy generated at that time is transferred from the second low-temperature side heat exchanger 7 to the second high-temperature side heat exchanger 6 side, which is opposite to the sound energy transfer direction. In this way, the second high temperature side heat exchanger 6 is heated.

Schematic of thermoacoustic apparatus showing an embodiment of the present invention A view of the stack in the same form as seen from the axial direction Cross-sectional view of the stack in the same form The figure which shows the variable mechanism of the 1st heat exchanger in the same form, and a 2nd heat exchanger Diagram showing the positional relationship between the standing wave and the first heat exchanger and second heat exchanger in the form Schematic of thermoacoustic apparatus in another embodiment Schematic of thermoacoustic apparatus in another embodiment Schematic of thermoacoustic apparatus in another embodiment

DESCRIPTION OF SYMBOLS 1 ... Thermoacoustic apparatus 2 ... Loop pipe 2a ... Straight pipe part 2b ... Connection pipe part 3a ... 1st stack 3b ... 2nd stack 30 ... Conducting path 30eL , 30 eH ... stack component 4 ... first high temperature side heat exchanger 5 ... first low temperature side heat exchanger 6 ... second high temperature side heat exchanger 7 ... second low temperature side heat Exchanger 300 ... first heat exchanger 310 ... second heat exchanger

Claims (3)

A tube working fluid is sealed, a first heat exchanger comprising a first stack sandwiched between the first high-temperature-side heat exchanger and the first low-temperature heat exchanger, and a second high-temperature-side heat exchanger by self-excitation by the second low-temperature side; and a second heat exchanger made consisting of the second stack sandwiched between the heat exchanger and entering the high-temperature heat to the first high-temperature-side heat exchanger to generate a standing wave and a traveling wave, this was cooled to the second low-temperature heat exchanger by the standing wave and a traveling wave to output the heat, or cold heat to the first low-temperature heat exchanger to generate a standing wave and a traveling wave due to self-excited by entering, a thermoacoustic apparatus for outputting the heat to heat the second high-temperature-side heat exchanger by this standing wave and the traveling wave,
The first heat exchanger and the second heat exchanger have the same configuration, and the first heat exchanger and the second heat exchanger have the same phase of sound velocity fluctuation and sound pressure fluctuation in the pipe. Provide multiple locations in the vicinity of the position, select the heating and cooling of the first heat exchanger and the second heat exchanger, input heat to the multiple first heat exchangers, the second heat exchange A thermoacoustic device characterized in that heat is output from the vessel or heat is input to the first heat exchanger and heat is output from the plurality of second heat exchangers . The thermoacoustic apparatus of Claim 1 which provided the variable mechanism for changing the position of said 1st heat exchanger or a 2nd heat exchanger with respect to the said pipe | tube. The thermoacoustic device according to claim 1, wherein the first heat exchanger or the second heat exchanger is attached to a part of a pipe, and the part of the pipe is separated so as to be slidable with respect to a main body of the pipe.

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