Magnetic refrigerator and refrigeration / heating method using a directional superimposed magnetic circuit

Abstract

This invention discloses a magnetic refrigerator using a directional superimposed magnetic circuit. [Solution] The system includes a rotor, a stator, a tank-type heat regenerator, a support rotation mechanism, and a housing. The rotor, stator, and tank-type heat regenerator are mounted inside the housing, and the support rotation mechanism is mounted on the outer side wall of the housing. The rotor includes a rotor shaft, a rotor bracket, and magnets, with multiple magnets fixed to the bracket and the rotor shaft connected to the center of the bracket. The stator has a circular stator through-hole in the center, and the rotor shaft penetrates the stator through-hole. Multiple tank-type heat regenerators are fixed to the outer wall of the stator. Each tank-type heat regenerator contains magnetic material and multiple circuit tubes inside, and the magnetic material is cooled or heated by the action of a changing magnetic field. The first and second shunters have the same structure.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic refrigeration, and specifically to a magnetic refrigerator using a directional superposed magnetic circuit and a refrigeration and heating method.

Background Art

[0002] Magnetic refrigeration technology is a refrigeration technology based on the magnetocaloric effect. When a magnetic field is applied to a magnetic material, its temperature changes, and thus cooling capacity is generated. The magnetocaloric effect is realized by the fact that when one of the magnetic entropy and the thermal entropy increases, the other decreases, and in order to keep the total entropy unchanged, the magnetocaloric material needs to be in an adiabatic environment. In that case, when an external magnetic field is applied to the magnetic material, the magnetic moments are arranged orderly, the magnetic entropy decreases, and the thermal entropy increases and heat is released. On the contrary, when the magnetic field is removed, the magnetic moments are arranged disorderly, the thermal entropy decreases, and heat needs to be absorbed, and at this time the refrigeration effect is exerted.

[0003] The patent application with application number CN202011032651.0 discloses a permanent magnet type magnetic refrigerator with AMR technology as the core, which includes a refrigerator body, an installation base is provided inside the refrigerator body, a refrigerator cavity is provided inside the refrigerator body, a refrigerator outer wall is provided outside the refrigerator body, double-sided permanent magnets are provided inside the refrigerator outer wall, a magnetic spring is movably connected inside the double-sided permanent magnets, a magnetic field gap passage is movably connected inside the refrigerator outer wall, and a pump body with a valve is movably connected to one end of the magnetic field gap passage away from the refrigerator outer wall. Four sets of direct-acting solenoid valves and electromagnetic gears in a sealed state form a circulating and sealed electromagnetic space, and at the same time, the double-sided permanent magnets inside the refrigerator cavity operate to generate a circulating magnetic field, thereby forming two sets of adiabatic magnetic fields. Based on the magnetic refrigeration thermodynamics principle and the Carnot cycle principle, the temperature of the material decreases and heat is absorbed from the outside to form a refrigeration effect.

Summary of the Invention

[0004] Conventional magnetic refrigerators have many mechanically moving parts, and because of the large number of moving parts, they generate a lot of noise during operation. How to eliminate or reduce the noise from magnetic refrigerators is a technical challenge that needs to be solved. [Means for solving the problem]

[0005] The present invention aims to provide a magnetic refrigerator and a refrigeration heating method using a directional superimposed magnetic circuit, which generates magnetic field changes of different intensities by designing a directional superimposed magnetic circuit and acts on the magnetic material in a tank-type magnetic heat regenerator in a multi-channel manner, thereby realizing a continuous rapid adiabatic refrigeration function and effectively ensuring the magnetic refrigeration effect.

[0006] To achieve the above objectives, the present invention employs the following technical solutions. A magnetic refrigerator using a directional superimposed magnetic circuit includes a rotor, a stator, a tank-type heat regenerator, a support rotation mechanism, and a housing. The rotor, stator, and tank-type heat regenerator are mounted inside the housing, and the support rotation mechanism is mounted on the outer side wall of the housing. The rotor has a cylindrical external structure and includes a rotor shaft, rotor brackets, and magnets. Multiple magnets are fixed to the brackets, and the rotor shaft is connected to the center of the brackets. The multiple magnets have the same axis and form a multilayer structure. The multiple magnets are arranged so that their directionality is superimposed. The magnetic field directions of the magnets located on both the upper and lower sides of the central plane are mirror-image symmetric, and the magnetic field direction points from the inner layer to the outer layer. The angle of the magnetic field directions of the magnets located on both the upper and lower sides of the central plane gradually increases from the inside to the outside. Both ends of the rotor shaft are attached to support bases. The stator has a cylindrical external structure and a circular stator through-hole is provided in the center. The rotor shaft is drilled through the stator through hole, and multiple tank-type heat regenerators are fixed to the outer wall of the stator. The tank-type heat regenerators have a sealed structure and are equipped with magnetic material and multiple circuit tubes inside. The magnetic material is cooled or heated by the action of a changing magnetic field. The first and second shunters have the same structure and include a shunter body, a main shunt pipe, a shunt plate, a branch shunt pipe, and a solenoid valve. Multiple main shunt pipes are connected to the left side of the shunter body, and multiple shunt plates are connected to the right side of the shunter body. Multiple branch pipes are connected to the right side of the branch panel, solenoid valves are provided in the branch pipes, the support rotation mechanism includes support rollers, a reduction gear and an AC servo motor, multiple support rollers abut against the outer wall of the housing, the rotation shafts of the support rollers are connected to the power output terminal of the reduction gear, the power input terminal of the reduction gear is connected to the rotation shaft of the AC servo motor, the rotation shafts of the support rollers are mounted inside the roller support bases, and the multiple roller support bases are fixed to the main body bracket.

[0007] Furthermore, support rings are provided on both the inside and outside of the magnets in the same layer. The outermost support ring is made of Q235 structural steel, while the inner support ring is made of stainless steel.

[0008] Furthermore, the outermost support ring has a thickness of 3-6 mm, while the inner support ring has a thickness of 0.2-1 mm.

[0009] Furthermore, the magnet is N-based sintered neodymium iron boron, with a residual magnetism of ≥1.4T.

[0010] Furthermore, the rotor shaft and rotor bracket are connected by a key.

[0011] Furthermore, the magnet has an annular segment structure, with the width of the inner layer magnets being smaller than the width of the outer layer magnets, and the number of inner layer magnets being greater than the number of outer layer magnets.

[0012] Furthermore, through-grooves are provided on both the upper and lower sides of the bracket, and these through-grooves are located on both the upper and lower sides of the central surface.

[0013] Furthermore, the support rollers are rubber rollers, and of the multiple support rollers, one is the driving roller and the rest are driven rollers.

[0014] Furthermore, each of the multiple solenoid valves in each distribution panel belongs to either the refrigeration circuit or the heating circuit, and the solenoid valves are used to control the continuity / continuity of the distribution branch pipes on the refrigeration circuit or the heating circuit.

[0015] The refrigeration and heating method for a magnetic refrigerator using a directional superimposed magnetic circuit is as follows: The AC servo motor outputs power to the reduction gear, the reduction gear rotates the support roller, the support roller rotates the housing using frictional force, the housing rotates the rotor, and the magnetic field formed by the magnets in the tank-type heat regenerator cuts the tank-type heat regenerator, and the magnetic material in the tank-type heat regenerator freezes or heats due to the action of the changing magnetic field. The invention includes the following: when the magnetic field strength increases, the magnetic material heats up, and the solenoid valve opens the solenoid valve in the heating circuit and closes the solenoid valve in the refrigeration circuit; and when the magnetic field strength decreases, the magnetic material cools down and freezes, and the solenoid valve opens the solenoid valve in the refrigeration circuit and closes the solenoid valve in the heating circuit. [Effects of the Invention]

[0016] The technical effects of the present invention include the following: According to the magnetic refrigerator using the directional superposition type magnetic circuit proposed by the present invention, by realizing the change of the magnetic field structure and designing the directional superposition type magnetic circuit, magnetic field changes of different intensities are generated, and by acting on the magnetic material in the tank-type magnetic heat regenerator in a multi-channel manner, a continuous rapid adiabatic refrigeration function is realized, continuous silent operation can be realized, the reliability is high, and the magnetic refrigeration effect can be effectively ensured.

[0017] The magnetic refrigerator using the directional superposition type magnetic circuit acts on the magnetic material in the tank-type magnetic heat regenerator in a multi-channel manner, realizes the continuous rapid adiabatic refrigeration function, and can exert a relatively large magnetic heat effect on the rare earth metal material Gd and the LaFeSiH-based magnetic material, effectively ensuring the magnetic refrigeration effect.

[0018] The present invention can realize continuous silent operation and has high reliability.

Brief Description of the Drawings

[0019] [Figure 1] It is a structural principle diagram of the magnetic refrigerator body in the present invention. [Figure 2] It is a structural principle diagram of the rotor in the present invention. [Figure 3] It is a structural principle diagram of the support rotation mechanism in the present invention. [Figure 4] It is a structural principle diagram of the stator in the present invention. [Figure 5] It is a schematic diagram showing the connection of the stator and the tank-type heat regenerator in the present invention. [Figure 6] It is a schematic diagram showing the structure of the first diverter in the present invention. [Figure 7] It is a schematic diagram showing the side structure of the first diverter in the present invention. [Figure 8] It is a schematic diagram showing the usage state of the magnetic refrigerator using the directional superposition type magnetic circuit in the present invention.

Embodiments for Carrying Out the Invention

[0020] The following description fully explains specific embodiments of the present invention so that those skilled in the art can implement and reproduce it.

[0021] This application improves the magnetic field in conventional magnetic refrigerators. A magnetic refrigerator using such a directional superposition magnetic circuit realizes a change in the magnetic field structure. By designing the directional superposition magnetic circuit, magnetic field changes of different intensities are generated, and by acting on the magnetic material in the tank-type magnetic regenerator through multiple channels, a continuous rapid adiabatic refrigeration function is realized. It can exert a relatively large magnetocaloric effect on rare earth metal materials such as Gd and LaFeSiH-based magnetic materials, continuously realize silent operation, has high reliability, can effectively ensure the magnetic refrigeration effect, and can be applied to magnetic refrigeration air conditioners and refrigerators.

[0022] As shown in FIG. 1, it is a structural principle diagram of a magnetic refrigerator 4 using a directional superposition magnetic circuit in the present invention. As shown in FIG. 2, it is a structural principle diagram of a rotor 41 in the present invention.

[0023] The magnetic refrigerator 4 using a directional superposition magnetic circuit includes a rotor 41, a stator 42, a tank-type regenerator 43, a support rotation mechanism 44, and a housing 45. The rotor 41, the stator 42, and the tank-type regenerator 43 are installed in the housing 45, and the support rotation mechanism 44 is installed on the side wall outside the housing 45.

[0024] The rotor 41 has an outer shape of a cylindrical structure and includes a rotor shaft 411, a bracket 412, and magnets 413. A plurality of magnets 413 are fixed to the rotor bracket 412, and the rotor shaft 411 is connected to the center position of the rotor bracket 412. The rotor shaft 411, the rotor shaft 411, and the rotor bracket 412 are connected by a key. Outside the magnets 413, a support ring 415 is fixed to strengthen the overall strength of the plurality of magnets. Both ends of the rotor shaft 411 are respectively attached to support bases.

[0025] Multiple magnets 413 share the same axis and form a multilayer structure. Support rings 415 are provided on the inside and outside of the magnets 413 in the same layer. The outermost support ring 415 is made of Q235 structural steel with a thickness of 3-6 mm. The inner support rings 415 are made of stainless steel with a thickness of 0.2-1 mm.

[0026] The magnet 413 has an annular segment structure, with the width of the inner layer magnets 413 being smaller than the width of the outer layer magnets 413, and the number of inner layer magnets 413 being greater than the number of outer layer magnets 413. Multiple magnets 413 are arranged so that their directivity overlaps, and the magnetic field directions of the magnets 413 located on both the upper and lower sides of the central plane are mirror-image symmetric. The magnetic field direction is directed from the inner layer to the outer layer, and the magnetic field direction (angle) of the magnets 413 located on both the upper and lower sides of the central plane gradually increases from the inside to the outside. The magnet 413 is N-based sintered neodymium iron boron, with a residual magnetism of ≥ 1.4T.

[0027] To reduce weight, the bracket 412 is provided with gap-penetrating grooves 416 located on both the upper and lower sides of its central surface.

[0028] As shown in Figure 3, this is a diagram illustrating the configuration principle of the support rotation mechanism 44 in the present invention.

[0029] The support rotation mechanism 44 includes support rollers 441, a reduction gear, and an AC servo motor. Multiple support rollers 441 abut against the outer wall of the housing 45, the rotation shafts of the support rollers 441 are connected to the power output terminals of the reduction gear, and the power input terminals of the reduction gear are connected to the rotation shafts of the AC servo motor. The rotation shafts of the support rollers 441 are mounted inside roller support bases 442, and multiple roller support bases 442 are fixed to the main body bracket 443.

[0030] The support roller 441 is a rubber roller, which can effectively reduce noise. Of the multiple support rollers 441, one is the driving roller and the rest are driven rollers.

[0031] The AC servo motor outputs power to the reduction gear, which rotates the support roller 441, and the support roller 441 uses frictional force to rotate the housing 45 and rotor 41.

[0032] As shown in Figure 4, this is a schematic diagram illustrating the structural principle of the stator 42 in the present invention. As shown in Figure 5, this is a schematic diagram showing the connection between the stator 42 and the tank-type heat regenerator 43 in the present invention.

[0033] The stator 42 has a cylindrical outer shape and is mainly constructed by overlapping multiple electrical steel plates to reduce eddy currents. A circular stator through-hole 421 is provided in the center, and multiple tank-type heat regenerators 43 are fixed to the outer wall of the stator 42. A projection 422 for connecting to the tank-type heat regenerators 43 is provided at the outer end of the stator 42, and the rotor shaft 411 is drilled into the stator through-hole 421.

[0034] The tank-type heat regenerator 43 has a sealed structure and is made using 3D-printed insulation material. Inside, there is a magnetic material 432 and two circuit tubes 431. The circuit tubes 431 are connected to the main pipeline, the magnetic material 432 is cooled or heated by the action of a changing magnetic field, and the circuit tubes 431 are used to circulate a heat exchange fluid.

[0035] In the magnetic refrigerator 4 using a directional superimposed magnetic circuit, the arrangement of multiple magnets 413 enables changes in magnetic field structure, strength, and direction. By designing a directional superimposed magnetic circuit, changes in magnetic field strength are generated, and by acting on the magnetic material in the tank-type magnetic heat regenerator in a multi-channel manner, a continuous rapid adiabatic refrigeration function is realized. This allows the rare earth metal material Gd, LaFeSiH-based magnetic material 432 to exhibit a relatively large magnetocaloric effect, enabling continuous quiet operation, high reliability, and effective assurance of the magnetic refrigeration effect.

[0036] As shown in Figure 6, this is a schematic diagram showing the structure of the first flow divider 5 in the present invention, and as shown in Figure 7, this is a schematic diagram showing the side structure of the first flow divider 5 in the present invention.

[0037] The first diversion valve 5, which is the heating end, is connected to the main line between the magnetic refrigerator 4, which uses a directional superimposed magnetic circuit, and the heat exchanger 6, while the second diversion valve 8, which is the refrigeration end, is connected between the pump 2 and the magnetic refrigerator 4, which uses a directional superimposed magnetic circuit.

[0038] The first and second diversion devices 5 and 8 have the same structure and include a diversion device body 51, a main diversion pipe 52, a diversion panel 53, a branch diversion pipe 54, and a solenoid valve 55. Multiple main diversion pipes 52 are connected to the left side of the diversion device body 51, multiple diversion panels 53 are connected to the right side of the diversion device body 51, and multiple branch diversion pipes 54 are connected to the right side of the diversion panel 53. The solenoid valves 55 are installed in the branch diversion pipes 54. The main diversion pipes 52 are connected to the main pipeline. Each of the multiple solenoid valves 55 in each diversion panel 53 belongs to either a refrigeration circuit or a heating circuit.

[0039] The solenoid valve 55 is used to control the continuity / continuity of the branch pipe 54 on the refrigeration circuit or the heating circuit. When refrigeration is performed, the heating circuit is shut off and the refrigeration circuit is opened. When heating is performed, the refrigeration circuit is shut off and the heating circuit is opened.

[0040] Multiple branch pipes 54 at the heating end are connected to the main pipeline on the outlet side of the magnetic refrigerator 4 which uses a directional superimposed magnetic circuit, and the heat exchange fluid flows sequentially through the circuit pipe 431, branch pipes 54, distribution panel 53, distribution unit body 51, and main distribution pipe 52 of the magnetic refrigerator 4 which uses a directional superimposed magnetic circuit, before flowing into the main pipeline.

[0041] Multiple branch pipes 54 at the refrigeration end are connected to the main pipeline on the inlet side of the magnetic refrigerator 4 which uses a directional superimposed magnetic circuit. The heat exchange fluid flows sequentially through the main pipeline, branch main pipe 52, diverter body 51, diverter platen 53, and branch pipes 54, and flows into the circuit pipe 431 of the magnetic refrigerator 4 which uses a directional superimposed magnetic circuit.

[0042] As shown in Figure 8, this is a schematic diagram illustrating the operating state of a magnetic refrigerator using a directional superimposed magnetic circuit according to the present invention.

[0043] The refrigeration system includes a control cabinet 1, a power pump 2, a filter 3, a magnetic refrigerator 4 using a directional superimposed magnetic circuit, a first diverter 5, a heat exchanger 6, a heat radiator 7, and a second diverter 8.

[0044] The control cabinet 1 is connected via cables to the power pump 2, the AC servo motor, and the solenoid valve 55, respectively, and is used to control the starting / stopping of the power pump 2 and the AC servo motor, and the opening and closing of the solenoid valve 55. The control cabinet 1 is equipped with controllers for controlling the power pump 2, the AC servo motor, and the solenoid valve 55.

[0045] The power pump 2 has its outlet connected to the inlet of the second flow divider 8 via the main line, supplying power to the heat exchange fluid.

[0046] Filter 3 has its outlet connected to the inlet of power pump 2 via a main line, and its inlet connected to the outlet of heat exchanger 6 via a main line, and is used to filter out impurities in the circulation of heat exchange fluid.

[0047] The magnetic refrigerator 4, which uses a directional superimposed magnetic circuit, has its outlet connected to the inlet of the first diverter 5 via a main line, and its inlet connected to the outlet of the second diverter 8 via a main line, and cools or heats by the magnetic caloric effect, and conducts cooling capacity or heat to the heat exchange fluid.

[0048] The first diverter 5 is used to divert or merge the heat exchange fluid, and its outlet is connected to the inlet of the heat exchanger 6 via the main pipe.

[0049] The heat exchanger 6 has its inlet connected to the inlet of the filter 3 via the main line and is used for heat exchange, and its circulation end outlet is connected to the radiator 7 via the circulation line.

[0050] The radiator 7 is used to derive the cooling capacity or heat quantity of the heat exchanger 6.

[0051] The second diverter 8 is used to divert or merge the heat exchange fluid, and its outlet is connected via the main line to the inlet of the magnetic refrigerator 4, which uses a directional superimposed magnetic circuit.

[0052] The specific steps for the refrigeration and heating method of a magnetic refrigerator using a directional superimposed magnetic circuit are as follows:

[0053] In step 1, the control cabinet 1 issues a command, the AC servo motor starts, the support roller 441 rotates the housing 45 of the magnetic refrigerator 4 using a directional superimposed magnetic circuit, and the housing 45 rotates the rotor 41.

[0054] In step 2, the magnetic field formed by the magnet 413 in the tank-type heat regenerator 43 disconnects the tank-type heat regenerator 43, and the magnetic material 432 in the tank-type heat regenerator 43 is frozen or heated by the action of the changing magnetic field.

[0055] In step 3, as the magnetic field strength increases, the magnetic material 432 heats up, and the solenoid valve 55 opens the solenoid valve 55 in the heating circuit and closes the solenoid valve 55 in the refrigeration circuit.

[0056] The heat exchange fluid enters the main pipeline from the circuit pipe 431, enters the heat exchanger 6 from the main pipeline, and the heat exchanger 6 performs heat exchange with the radiator 7.

[0057] In step 4, as the magnetic field strength decreases, the magnetic material 432 cools down and freezes, and the solenoid valve 55 opens the solenoid valve 55 of the refrigeration circuit and closes the solenoid valve 55 of the heating circuit.

[0058] The heat exchange fluid enters the main pipeline from the circuit pipe 431, enters the heat exchanger 6 from the main pipeline, and the heat exchanger 6 performs a cooling exchange with the radiator 7.

[0059] The terms used in this invention are descriptive and illustrative, and not limiting. Since the invention can be concretely implemented in various forms without departing from the spirit or substance of the invention, the above-described embodiments are not limited to the details described herein and should be interpreted broadly within the spirit and scope set forth in the appended claims, and all changes and modifications within the scope of the claims or their equivalents should be understood as being covered by the appended claims.

Claims

1. A magnetic refrigerator using a directional superimposed magnetic circuit, It includes a rotor, a stator, a tank-type heat regenerator, a support rotation mechanism, and a housing, wherein the rotor, stator, and tank-type heat regenerator are mounted inside the housing, and the support rotation mechanism is mounted on the outer side wall of the housing. The rotor has a cylindrical external structure and includes a rotor shaft, a rotor bracket, and magnets, with multiple magnets fixed to the bracket and the rotor shaft connected to the center of the bracket. Multiple magnets share the same axis, forming a multilayer structure, arranged so that their directivity overlaps, the magnetic field directions of the magnets located on both the upper and lower sides of the central plane are mirror-image symmetric, the magnetic field directions point from the inner layer to the outer layer, the angle of the magnetic field directions of the magnets located on both the upper and lower sides of the central plane gradually increases from the inside to the outside, and both ends of the rotor shaft are attached to support bases. The stator has a cylindrical outer shape with a circular stator through-hole in the center, and the rotor shaft penetrates the stator through-hole. Multiple tank-type heat regenerators are fixed to the outer wall of the stator. A tank-type heat regenerator has a sealed structure and contains a magnetic material and multiple circuit tubes inside. The magnetic material cools or heats through the action of a changing magnetic field. The first and second flow dividers have the same structure and include a flow divider body, a main flow divider, a flow divider panel, branch flow dividers, and a solenoid valve. Multiple main flow dividers are connected to the left side of the flow divider body, multiple flow divider panels are connected to the right side of the flow divider body, multiple branch flow dividers are connected to the right side of the flow divider panels, and a solenoid valve is provided on the branch flow divider. The support rotation mechanism includes support rollers, a reduction gear, and an AC servo motor, with multiple support rollers in contact with the outer wall of the housing, the rotation shafts of the support rollers connected to the power output terminals of the reduction gear, and the power input terminals of the reduction gear connected to the rotation shaft of the AC servo motor. The rotation axis of the support roller is mounted inside the roller support base, and multiple roller support bases are fixed to the main body bracket. A magnetic refrigerator using a directional superimposed magnetic circuit.

2. The magnets in the same layer are each provided with support rings on the inside and outside. The outermost support ring is made of Q235 structural steel, while the inner support ring is made of stainless steel. A magnetic refrigerator using the directional superimposed magnetic circuit described in claim 1.

3. The outermost support ring has a thickness of 3-6 mm, and the inner support ring has a thickness of 0.2-1 mm. A magnetic refrigerator using the directional superimposed magnetic circuit described in claim 2.

4. The magnet is N-type sintered neodymium iron boron, with a residual magnetism of ≥ 1.4T. A magnetic refrigerator using the directional superimposed magnetic circuit described in claim 1.

5. The rotor shaft and rotor bracket are connected by a key. A magnetic refrigerator using the directional superimposed magnetic circuit described in claim 1.

6. The magnet has an annular segment structure, with the width of the inner layer magnets being smaller than the width of the outer layer magnets, and the number of inner layer magnets being greater than the number of outer layer magnets. A magnetic refrigerator using the directional superimposed magnetic circuit described in claim 1.

7. The bracket has through-grooves on both the upper and lower sides, and these through-grooves are located on both the upper and lower sides of the central surface. A magnetic refrigerator using the directional superimposed magnetic circuit described in claim 1.

8. The support rollers are rubber rollers, and of the multiple support rollers, one is the driving roller and the rest are driven rollers. A magnetic refrigerator using the directional superimposed magnetic circuit described in claim 1.

9. Each of the multiple solenoid valves in the flow distribution panel belongs to either the refrigeration circuit or the heating circuit, and the solenoid valves are used to control the continuity / continuity of the flow distribution branch pipes on the refrigeration circuit or heating circuit. A magnetic refrigerator using the directional superimposed magnetic circuit described in claim 1.

10. A method for refrigerating and heating a magnetic refrigerator using a directional superimposed magnetic circuit as described in any one of claims 1 to 9, An AC servo motor outputs power to a reduction gear, the reduction gear rotates the support rollers, the support rollers rotate the housing using frictional force, the housing rotates the rotor, the magnetic field formed by the magnets in the tank-type heat regenerator cuts the tank-type heat regenerator, and the magnetic material in the tank-type heat regenerator is frozen or heated by the action of the changing magnetic field. When the magnetic field strength increases, the magnetic material heats up, and the solenoid valve opens the solenoid valve in the heating circuit and closes the solenoid valve in the refrigeration circuit. Conversely, when the magnetic field strength decreases, the magnetic material cools down and freezes, and the solenoid valve opens the solenoid valve in the refrigeration circuit and closes the solenoid valve in the heating circuit. A method for refrigeration and heating using a magnetic refrigerator with a directional superimposed magnetic circuit.

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