CN117155166A - Novel high-power thermomagnetic generator - Google Patents
Novel high-power thermomagnetic generator Download PDFInfo
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- CN117155166A CN117155166A CN202311059235.3A CN202311059235A CN117155166A CN 117155166 A CN117155166 A CN 117155166A CN 202311059235 A CN202311059235 A CN 202311059235A CN 117155166 A CN117155166 A CN 117155166A
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- 230000005291 magnetic effect Effects 0.000 claims abstract description 155
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- 230000005294 ferromagnetic effect Effects 0.000 claims description 12
- 230000005298 paramagnetic effect Effects 0.000 claims description 12
- 239000000696 magnetic material Substances 0.000 claims description 10
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- 230000035699 permeability Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 6
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- 230000008859 change Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 8
- 238000010248 power generation Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Abstract
The invention discloses a novel high-power thermomagnetic generator, which comprises a magnetic conduction module, a permanent magnet group and a switch module; the magnetic conduction module is made of magnetic conduction materials and is used for guiding a magnetic circuit, an induction coil is wound in the middle of the magnetic conduction module, and the left end and the right end of the magnetic conduction module are respectively provided with the switch module; the permanent magnet group is fixed on the magnetic conduction module, and the induction coil is positioned in the middle of the permanent magnet group; the switch module comprises a magnetic heating assembly and a heat exchange assembly, wherein the magnetic heating assembly is fixed on the magnetic conduction module, the heat exchange assembly can be sleeved on the magnetic heating assembly in a left-right movement mode, a driving piece is arranged between the heat exchange assembly and the magnetic heating assembly, a heat source piece and a permanent magnet are arranged at the left end of the heat exchange assembly, and a cold original piece is arranged at the right end of the heat exchange assembly. The novel high-power thermomagnetic generator greatly increases the heat exchange efficiency, improves the working frequency of the device, and has higher output power.
Description
Technical Field
The invention belongs to the technical field of magneto-thermal materials and thermomagnetic power generation, and particularly relates to a novel high-power thermomagnetic generator.
Background
The energy shortage and the environmental problem are significant barriers to the sustainable development of the elbow at present, and the recycling of waste heat generated in industrial production is a development direction with a very promising prospect. The thermomagnetic power generation technology for generating power by utilizing industrial waste heat has important significance for developing clean energy, recovering waste energy, relieving energy deficiency and the like.
The Curie temperature is the critical temperature when the magnetocaloric material finds phase transition under the action of a magnetic field, the soft magnetic material is in a ferromagnetic state below the Curie temperature point, and the soft magnetic material is converted into a paramagnetic state when the temperature exceeds the Curie temperature point. The larger the magnetic entropy change, the larger the magnetic flux change generated when the ferromagnetic-paramagnetic phase change occurs, which is beneficial to generate larger output voltage.
The thermomagnetic power generation is a novel power generation technology with low grade heat source requirements and can utilize heat sources in different temperature areas. Thermomagnetic power generation is generated by a change in the temperature of a soft magnetic material near its curie temperature causing a change in the magnetic properties of the material. Below the curie temperature point, the soft magnetic material is in a ferromagnetic state, when the temperature exceeds the curie temperature point, the soft magnetic material is converted into a paramagnetic state, the magnetic flux of the material suddenly changes in a short time, and an induction voltage is generated by winding an induction coil on the material. The ideal thermomagnetic cycle comprises four processes of equal magnetic field heating, isothermal demagnetization, equal magnetic field cooling and isothermal magnetization. The thermomagnetic generator can be classified into three types of stationary type, rotary type and reciprocating type according to the difference of structures in order to expand the operating temperature region of the thermomagnetic generator. The static thermomagnetic generator is a thermomagnetic generator which is fixed by ferromagnetic materials and depends on water flow heat exchange. Compared with two structures outside, the static type thermomagnetic generator directly converts heat energy into electric energy, has higher energy conversion efficiency, and can further increase induction voltage through the design of a topological structure on the basis of the static type thermomagnetic generator, but the working frequency of the generator is lower due to the fact that cold and hot fluid needs to be circulated. The rotary type thermomagnetic generator has the advantages that magnetic force unbalance applied to different positions of the annular soft magnetic material of the rotary type generator generates torque to drive the annular ring to rotate, and kinetic energy is converted into electric energy through a specific device. The reciprocating thermomagnetic generator can make soft magnetic material reciprocate at cold end and hot end by the composite action of the spring and the permanent magnet, and then converts kinetic energy into electric energy by a certain device. Like the rotary type, the reciprocating thermomagnetic generator has higher operating frequency but low energy conversion efficiency.
At present, the thermomagnetic generator proposed by researchers is improved on the basis of three types of generators, but the main problems faced by the researchers are not solved, so a new solution is needed to solve the low working frequency of the static thermomagnetic generator caused by fluid alternate heat exchange or the low energy conversion efficiency of the rotary/linear thermomagnetic generator caused by secondary energy conversion.
Disclosure of Invention
In order to solve at least one of the problems mentioned in the background art, the present invention aims to provide a novel high-power thermomagnetic generator.
The invention is realized by the following technical scheme:
a novel high power thermomagnetic generator comprising: the magnetic conduction module, the permanent magnet group and the switch module; the magnetic conduction module is made of magnetic conduction materials and is used for guiding a magnetic circuit, an induction coil is wound in the middle of the magnetic conduction module, and the left end and the right end of the magnetic conduction module are respectively provided with the switch module; the permanent magnet group is fixed on the magnetic conduction module, and the induction coil is positioned in the middle of the permanent magnet group; the switch module comprises a magnetic heat assembly and a heat exchange assembly, the magnetic heat assembly is fixed on the magnetic conduction module, the heat exchange assembly can be sleeved on the magnetic heat assembly in a left-right movement manner on the magnetic heat assembly, a driving piece is arranged between the heat exchange assembly and the magnetic heat assembly, a heat source piece and a permanent magnet are arranged at the left end of the heat exchange assembly, and a cold original piece is arranged at the right end of the heat exchange assembly; when the magneto-caloric assembly is in a ferromagnetic state, under the action of the magnetic force of the permanent magnet, the heat exchange assembly moves rightwards to enable the magneto-caloric assembly to be close to the heat source piece, and the heat source piece exchanges heat with the magneto-caloric assembly to enable the magneto-caloric assembly to be in a paramagnetic state gradually; when the magnetic heat component is in a paramagnetic state, the heat exchange component moves leftwards under the driving of the driving component, so that the cold source component is close to the magnetic heat component, and the cold source component exchanges heat with the magnetic heat component, so that the magnetic heat component is gradually in a ferromagnetic state.
In one embodiment, the magnetic conduction module comprises two identical strip-shaped magnetic conduction materials, the two magnetic conduction materials are arranged at intervals up and down, the induction coil is wound on the magnetic conduction material above, the N pole and the S pole of the permanent magnet group are respectively fixed on the magnetic conduction material below the magnetic conduction material above, and the upper end and the lower end of the magneto-caloric assembly are respectively fixed on the magnetic conduction material below the magnetic conduction material above.
In one embodiment, the permanent magnet group comprises two bar-shaped permanent magnets, the two bar-shaped permanent magnets are transversely arranged at the left side and the right side of the induction coil at intervals, and the N pole and the S pole of each bar-shaped permanent magnet are respectively fixed on the magnetic conductive material below the upper magnetic conductive material.
In one embodiment, the magnetically permeable material is a soft magnetic material having a high magnetic permeability.
In one embodiment, the heat exchange assembly comprises a main body frame with a rectangular structure, a plurality of zigzag heat exchange plates distributed at intervals are respectively arranged on the inner side of the left end and the inner side of the right end of the main body frame, the zigzag heat exchange plates extend from the inner side wall of the main body frame to the center of the main body frame, the cold source piece is fixed on the right side of the main body frame, the heat source piece and the permanent magnet are fixed on the left side of the main body frame, and the main body frame is sleeved on the magneto-thermal assembly so that the zigzag heat exchange plates are matched with the magneto-thermal assembly.
In one embodiment, the heat source member is fixed to a left side wall of the main body frame, and the permanent magnet is fixed to a left side of the heat source member.
In one embodiment, the magnetocaloric assembly comprises a main body casing and a plurality of sheet-shaped magnetocaloric materials fixed in the main body casing, wherein the sheet-shaped magnetocaloric materials are arranged in parallel at intervals along the front-back direction to form a plurality of gaps, and the main body casing transversely penetrates through the plurality of zigzag heat exchange plates so that the plurality of zigzag heat exchange plates are matched in the plurality of gaps; the upper magnetic conductive material is fixed at the upper end of the main body shell, and the lower magnetic conductive material is fixed at the lower end of the main body shell.
In one embodiment, the driving member is disposed between the right end of the magnetocaloric assembly and the inside of the right end of the main body frame to provide driving force for the leftward movement of the main body frame.
In one embodiment, the driving member is a spring, one end of the spring is fixed to the right end of the magnetocaloric assembly, and the other end of the spring is fixed to the right end inner side wall of the main body frame.
In one embodiment, the temperature of the heat source is higher than the curie temperature of the magnetocaloric assembly, the temperature of the cold source is lower than the curie temperature of the magnetocaloric assembly, and the directions of the two switch modules at the left end and the right end of the magnetic conduction module in the front-back direction are the same.
The beneficial effects of the invention are as follows: the novel high-power thermomagnetic generator solves the technical problems that the existing static thermomagnetic generator in the prior related art mainly adopts high-temperature/low-temperature fluid to circulate through a magnetocaloric material for heat exchange, and the working frequency of the thermomagnetic generator is limited by the heat exchange frequency due to the fact that the fluid needs to pass through a pipeline alternately, so that the whole output power of the thermomagnetic generator is reduced, and the like, and has the advantages that: the novel high-power thermomagnetic generator improves the heat exchange speed in one working period of the thermomagnetic generator, combines the respective advantages of the static thermomagnetic generator and the reciprocating thermomagnetic generator, adopts the reciprocating sawtooth heat exchange module to replace the traditional fluid heat exchange, greatly increases the heat exchange efficiency, improves the working frequency of the device, and has higher output power.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic overall perspective view of a novel high power thermomagnetic generator according to an embodiment of the present invention;
FIG. 2 is a front view of the overall structure of a novel high power thermomagnetic generator according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a switch module of a novel high power thermomagnetic generator according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a heat exchange assembly of a novel high power thermomagnetic generator according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of the magnetocaloric assembly of the novel high power thermomagnetic generator according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a magnetic induction loop in a first state of a novel high power thermomagnetic generator according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a magnetic induction loop in a second state of the novel high power thermomagnetic generator according to an embodiment of the present invention;
the magnetic conduction device comprises a magnetic conduction module 1, a permanent magnet group 2, a switch module 31, a heat source piece 32, a permanent magnet 33, a cold source piece 34, a magneto-thermal component 341, a main body shell 342, sheet magneto-thermal materials 343, gaps 35, a heat exchange component 351, a main body frame 352, zigzag heat exchange plates 36, a driving piece 4 and an induction coil.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the embodiments of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention.
Hereinafter, a novel high-power thermomagnetic generator according to an embodiment of the present invention will be specifically described with reference to fig. 1 to 7.
As shown in fig. 1-5, the novel high-power thermomagnetic generator provided by the embodiment of the invention comprises a magnetic conduction module 1, a permanent magnet group 2 and a switch module 3; the magnetic conduction module 1 is made of magnetic conduction materials and is used for guiding a magnetic circuit, an induction coil 4 is wound in the middle of the magnetic conduction module, and a switch module 3 is arranged at each of the left end and the right end of the magnetic conduction module 1; the permanent magnet group 2 is fixed on the magnetic conduction module 1, and the induction coil 4 is positioned in the middle of the permanent magnet group 2; the switch module 3 comprises a magnetic heat assembly 34 and a heat exchange assembly 35, the magnetic heat assembly 34 is fixed on the magnetic conduction module 1, the heat exchange assembly 35 can be sleeved on the magnetic heat assembly 34 in a left-right movement manner on the magnetic heat assembly 34, a driving piece 36 is arranged between the heat exchange assembly 35 and the magnetic heat assembly 34, a heat source piece 31 and a permanent magnet 32 are arranged at the left end of the heat exchange assembly 35, and a cold original piece 33 is arranged at the right end; when the magneto-caloric assembly 34 is in a ferromagnetic state, under the action of the magnetic force of the permanent magnet 32, the heat exchange assembly 35 moves rightward to enable the magneto-caloric assembly 34 to be close to the heat source element 31, and the heat source element 31 exchanges heat with the magneto-caloric assembly 34 to enable the magneto-caloric assembly 34 to be in a paramagnetic state gradually; when the magnetocaloric assembly 34 is in the paramagnetic state, the heat exchange assembly 35 is driven by the driving member 36 to move leftwards so that the cold source member 33 approaches the magnetocaloric assembly 34, and the cold source member 33 exchanges heat with the magnetocaloric assembly 34 so that the magnetocaloric assembly 34 is gradually in the ferromagnetic state.
In this embodiment, the magnetic conduction module 1 may be made of a magnetic conduction material that is easy to conduct magnetic conduction, so as to guide the magnetic circuit. The directions of the left end and the right end of the magnetic conduction module are the same in the front-back direction, namely, the left ends of the two switch modules 3 face the rear end of the magnetic conduction module 1, the right ends face the front end of the magnetic conduction module 1, the heat source piece 31 is positioned at the rear end of the magnetic conduction module 1, the cold original piece 33 is positioned at the front end of the magnetic conduction module 1, and therefore when the switch module 3 at the left end is closed, the switch module 3 at the right end is disconnected, and then magnetic fluxes of magnetic circuits passing through the induction coil 4 are alternately changed, so that the induction coil 4 generates induction voltage to realize power generation.
Here, the magnetocaloric material is disposed in the magnetocaloric assembly 34 in the switch module 3, and the magnetocaloric material exchanges heat with the heat source member 31 alternately by the magnetic attraction of the permanent magnet 32 and the driving force of the driving member 36, thereby changing the magnetic state of the magnetocaloric assembly 34 and thus changing the magnetic flux loop direction of the whole magnetic circuit. For example, when the temperature of the magnetocaloric material is lower than the curie temperature, the magnetocaloric assembly 34 is in a ferromagnetic state, the magnetocaloric assembly 34 is attracted by the permanent magnet 32 to enable the heat exchange assembly 35 to move rightward, so that the magnetocaloric assembly 34 approaches the heat source member 31 to enter the hot end for heating, and when the temperature of the magnetocaloric material exceeds the curie temperature point, the magnetocaloric material is converted into a paramagnetic state, and the switch module 3 is in an off state; because the magnetocaloric material in the magnetocaloric assembly 34 is no longer attracted by the permanent magnet 32 when in the paramagnetic state, the heat exchange assembly 35 moves leftwards under the driving force of the driving member 36, so that the magnetocaloric assembly 34 returns to the cold end near the cold source member 33, the magnetocaloric assembly 34 exchanges heat with the cold source member 33 through the heat exchange assembly 35, so that the temperature of the magnetocaloric material is gradually lower than the curie temperature, the magnetocaloric assembly 34 is converted into the ferromagnetic state again, and the switch module 3 is in the closed state. The set of magnetocaloric materials will cyclically change in ferromagnetic and paramagnetic states according to a certain period. The switch modules 3 are respectively arranged at the left end and the right end of the magnetic conduction module 1, and the switches at the two ends of the magnetic conduction module 1 are controlled to be in different states respectively to guide the magnetic circuit. As shown in fig. 6, when the left end switch module 3 is closed and the right end switch module 3 is opened, the direction of the magnetic flux passing through the magnetic circuit forms a closed loop to the left; as shown in fig. 7, when the right-side switch module 3 is closed and the left-side switch module 3 is opened, the direction of the magnetic flux passing through the magnetic circuit forms a closed loop rightward; when the two states are alternated, the induction coil 4 wound on the magnetic conduction module 1 generates induction voltage.
It should be noted that, the temperature of the heat source is higher than the curie temperature of the magnetocaloric assembly, and the temperature of the cold source is lower than the curie temperature of the magnetocaloric assembly, so that suitable cold original materials and heat source materials or related devices can be selected according to specific situations.
In one embodiment, as shown in fig. 1-2, the magnetically permeable module 1 comprises two identical strips of magnetically permeable material, which may be, for example, a soft magnetic material with a high magnetic permeability. The two magnetic conductive materials are arranged at intervals up and down, the induction coil 4 is wound on the magnetic conductive material above, the N pole and the S pole of the permanent magnet group 2 are respectively fixed on the magnetic conductive material below the magnetic conductive material above, and the upper end and the lower end of the magneto-caloric assembly 34 are respectively fixed on the magnetic conductive material below the magnetic conductive material above.
In one embodiment, the permanent magnet set 2 includes two bar-shaped permanent magnets, which are arranged at left and right sides of the induction coil 4 at a lateral interval, and the N pole and S pole of each bar-shaped permanent magnet are respectively fixed on the magnetic conductive material below the magnetic conductive material above.
Thus, in this embodiment, the magnetically permeable modules made of a magnetically soft material with high magnetic permeability will have the magnetically sensitive wires of the two bar-shaped permanent magnets bound in the magnetically permeable modules. When the left side switch module is in an off state and the right side switch module is in an on state, magnetic induction lines generated by the two bar-shaped permanent magnets are all from the N poles to the S poles of the bar-shaped permanent magnets through the right side switch module to form a closed loop magnetic circuit from the right side, and at the moment, magnetic flux passing through the induction coil is rightward; when the left side switch module is in a closed state and the right side switch module is in an open state, magnetic induction lines generated by the two bar-shaped permanent magnets are all started from the N poles and return to the S poles of the bar-shaped permanent magnets through the left side switch module to form a closed magnetic circuit, and at the moment, magnetic flux passing through the induction coil is leftwards. As a result of the change in magnetic flux generated within the induction coil, an induced voltage will be generated across the induction coil.
In one embodiment, as shown in fig. 3-4, the heat exchange assembly 35 includes a main frame 351 with a rectangular structure, a plurality of zigzag heat exchange fins 352 are respectively disposed on the inner side of the left end and the inner side of the right end of the main frame 351, the zigzag heat exchange fins 352 extend from the inner side wall of the main frame 351 to the center of the main frame 351, and a space is reserved between the zigzag heat exchange fins 352 on two sides to isolate the heat source from the heat source, the heat source piece 33 is fixed on the right side of the main frame 351, the heat source piece 31 and the permanent magnet 32 are fixed on the left side of the main frame 351, and the main frame 351 is sleeved on the magnetocaloric assembly 34 so that the zigzag heat exchange fins 352 are matched with the magnetocaloric assembly 34.
Further, the zigzag heat exchange plate 352 is coated with heat-conducting silicone grease, so that heat exchange efficiency is improved, and energy loss caused by friction is reduced.
In one embodiment, the heat source member 31 is fixed to the left side wall of the main body frame 351, and the permanent magnet 32 is fixed to the left side of the heat source member 31.
In one embodiment, as shown in fig. 5, the magnetocaloric assembly 34 includes a main body casing 341 and a plurality of sheet-shaped magnetocaloric materials 342 fixed in the main body casing 341, where the plurality of sheet-shaped magnetocaloric materials 342 are arranged in parallel along the front-rear direction at intervals to form a plurality of gaps 343, and the main body casing 341 is transversely penetrated through the plurality of zigzag heat exchange sheets 352 so that the plurality of zigzag heat exchange sheets 352 are fitted in the plurality of gaps 343; the upper magnetic conductive material is fixed at the upper end of the main body casing 341, and the lower magnetic conductive material is fixed at the lower end of the main body casing 341.
Thus, in this embodiment, the magnetocaloric assembly made of the sheet magnetocaloric material and the heat exchange assembly made of the zigzag heat exchange sheet are both a linear thermomagnetic generator and a switch module of the whole device. The sheet-shaped magneto-caloric materials are arranged in parallel at a certain interval, two sides of a heat exchange assembly formed by the zigzag heat exchange plates are respectively connected with a cold source and a heat source, the width of the sawteeth of the zigzag heat exchange plates is equal to the gap of the sheet-shaped magneto-caloric materials, and the sawteeth are inserted into the gap for heat exchange during heat exchange. Greatly improves the heat exchange efficiency.
In one embodiment, a drive member 36 is provided between the right end of the magnetocaloric assembly 34 and the inside of the right end of the main body frame 351 to provide a driving force for the leftward movement of the main body frame 351.
Further, the driving member 36 is a spring, one end of which is fixed to the right end of the magnetocaloric assembly 34, and the other end of which is fixed to the right inner sidewall of the main body frame 351.
Thus, in the present embodiment, the permanent magnet and the spring in the switch module are used to control the relative positions of the magnetocaloric material in the magnetocaloric assembly and the cold source and the heat source. The magnetocaloric material is fixed on the magnetic conduction module through the magnetocaloric assembly. The magnetic heat material is close to the heat source piece at the beginning, the magnetic heat material is in a paramagnetic state and is not influenced by the permanent magnet, the cold source piece is pulled to the magnetic heat material through the main body frame by the spring in a stretching state, heat exchange is carried out between the magnetic heat material and the cold source piece to enable the temperature to be reduced, when the temperature of the magnetic heat material is reduced to be lower than the Curie temperature point, the magnetic heat material is converted into a ferromagnetic state, the magnetic heat material interacts with the permanent magnet at the moment, the heat source piece is pulled to the magnetic heat material through the main body frame, and heat exchange is carried out between the magnetic heat material and the heat source piece again. The magnetocaloric material exchanges heat with the cold source piece and the heat source piece periodically under the action of the permanent magnet and the spring. Compared with the traditional fluid heat exchange, the switch module oscillating between the cold source piece and the heat source piece avoids the time loss caused by flowing through a pipeline (a cavity formed by the water pipe and the magnetocaloric material sheet), increases the change rate of magnetic flux in the induction coil, and is beneficial to obtaining larger induction voltage and output power.
Therefore, the novel high-power thermomagnetic generator provided by the embodiment of the invention solves the technical problems that the existing static thermomagnetic generator in the prior art mainly adopts high-temperature/low-temperature fluid to circulate through a magnetocaloric material for heat exchange, and the working frequency of the thermomagnetic generator is limited by the heat exchange frequency due to the fact that the fluid needs a certain time to alternately pass through a pipeline, thereby reducing the whole output power of the thermomagnetic generator and the like, and realizing the beneficial effects: the novel high-power thermomagnetic generator improves the heat exchange speed in one working period of the thermomagnetic generator, combines the respective advantages of the static thermomagnetic generator and the reciprocating thermomagnetic generator, adopts the reciprocating sawtooth heat exchange module to replace the traditional fluid heat exchange, greatly increases the heat exchange efficiency, improves the working frequency of the device, and has higher output power.
In the description of the present invention, furthermore, the terms "first," "second," "another," "yet another" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A novel high power thermomagnetic generator, comprising: the magnetic conduction module, the permanent magnet group and the switch module; the magnetic conduction module is made of magnetic conduction materials and is used for guiding a magnetic circuit, an induction coil is wound in the middle of the magnetic conduction module, and the left end and the right end of the magnetic conduction module are respectively provided with the switch module; the permanent magnet group is fixed on the magnetic conduction module, and the induction coil is positioned in the middle of the permanent magnet group; the switch module comprises a magnetic heat assembly and a heat exchange assembly, the magnetic heat assembly is fixed on the magnetic conduction module, the heat exchange assembly can be sleeved on the magnetic heat assembly in a left-right movement manner on the magnetic heat assembly, a driving piece is arranged between the heat exchange assembly and the magnetic heat assembly, a heat source piece and a permanent magnet are arranged at the left end of the heat exchange assembly, and a cold original piece is arranged at the right end of the heat exchange assembly; when the magneto-caloric assembly is in a ferromagnetic state, under the action of the magnetic force of the permanent magnet, the heat exchange assembly moves rightwards to enable the magneto-caloric assembly to be close to the heat source piece, and the heat source piece exchanges heat with the magneto-caloric assembly to enable the magneto-caloric assembly to be in a paramagnetic state gradually; when the magnetic heat component is in a paramagnetic state, the heat exchange component moves leftwards under the driving of the driving component, so that the cold source component is close to the magnetic heat component, and the cold source component exchanges heat with the magnetic heat component, so that the magnetic heat component is gradually in a ferromagnetic state.
2. The novel high-power thermomagnetic generator according to claim 1, wherein the magnetic conduction module comprises two identical strip-shaped magnetic conduction materials, the two magnetic conduction materials are arranged at an upper and lower interval, the induction coil is wound on the magnetic conduction material above, the N pole and the S pole of the permanent magnet group are respectively fixed on the magnetic conduction material below the magnetic conduction material above, and the upper and lower ends of the magneto-caloric assembly are respectively fixed on the magnetic conduction material below the magnetic conduction material above.
3. The novel high-power thermomagnetic generator of claim 2, wherein the permanent magnet group comprises two bar-shaped permanent magnets which are transversely arranged at left and right sides of the induction coil at intervals, and the N pole and the S pole of each bar-shaped permanent magnet are respectively fixed on the magnetic conductive material below the magnetic conductive material above.
4. The novel high power thermomagnetic generator of claim 2 wherein the magnetically permeable material is a soft magnetic material having a high magnetic permeability.
5. The novel high-power thermomagnetic generator according to claim 2, wherein the heat exchange assembly comprises a main body frame with a rectangular structure, a plurality of zigzag heat exchange plates distributed at intervals are respectively arranged on the inner side of the left end and the inner side of the right end of the main body frame, the zigzag heat exchange plates extend from the inner side wall of the main body frame to the center of the main body frame, the cold source part is fixed on the right side of the main body frame, the heat source part and the permanent magnet are fixed on the left side of the main body frame, and the main body frame is sleeved on the magnetocaloric assembly so that the zigzag heat exchange plates are matched with the magnetocaloric assembly.
6. The novel high power thermomagnetic generator of claim 5, wherein the heat source member is fixed to a left side wall of the main body frame, and the permanent magnet is fixed to a left side of the heat source member.
7. The novel high-power thermomagnetic generator according to claim 5, wherein the magnetocaloric assembly comprises a main body casing and a plurality of sheet-shaped magnetocaloric materials fixed in the main body casing, the plurality of sheet-shaped magnetocaloric materials are arranged in parallel at intervals along the front-rear direction to form a plurality of gaps, and the main body casing transversely penetrates through the plurality of zigzag heat exchange plates so that the plurality of zigzag heat exchange plates are matched in the plurality of gaps; the upper magnetic conductive material is fixed at the upper end of the main body shell, and the lower magnetic conductive material is fixed at the lower end of the main body shell.
8. The novel high-power thermomagnetic generator of claim 5, wherein the driving member is disposed between the right end of the magnetocaloric assembly and the inside of the right end of the main frame to provide driving force for leftward movement of the main frame.
9. The novel high-power thermomagnetic generator according to claim 8, wherein the driving member is a spring, one end of the spring is fixed to the right end of the magnetocaloric assembly, and the other end of the spring is fixed to the right inner side wall of the main body frame.
10. The novel high-power thermomagnetic generator according to claim 1, wherein the temperature of the heat source is higher than the curie temperature of the magnetocaloric assembly, the temperature of the cold source is lower than the curie temperature of the magnetocaloric assembly, and the directions of the two switch modules at the left and right ends of the magnetic conduction module in the front-rear direction are the same.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311059235.3A CN117155166A (en) | 2023-08-22 | 2023-08-22 | Novel high-power thermomagnetic generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311059235.3A CN117155166A (en) | 2023-08-22 | 2023-08-22 | Novel high-power thermomagnetic generator |
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| CN202311059235.3A Pending CN117155166A (en) | 2023-08-22 | 2023-08-22 | Novel high-power thermomagnetic generator |
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| Country | Link |
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| CN (1) | CN117155166A (en) |
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