Magnetic refrigerator with directional superposition type magnetic circuit and refrigerating and heating method

Abstract

The invention discloses a magnetic refrigerator with a directional superposition type magnetic circuit, which comprises a rotor, a stator, a groove type heat regenerator, a support rotating mechanism and a shell, the rotor, the stator and the groove type heat regenerator are arranged in the shell, and the support rotating mechanism is arranged on the side wall of the outer side of the shell; the rotor comprises a rotating shaft, a rotor bracket and magnets, the plurality of magnets are fixed on the bracket, and the rotating shaft is connected to the central position of the bracket; a circular stator through hole is formed in the center of the stator, and the rotating shaft penetrates through the stator through hole; a plurality of groove type heat regenerators are fixed on the outer wall of the stator; a magnetic material and a plurality of loop pipes are arranged in the groove-shaped heat regenerator, and the magnetic material performs refrigeration / heating under the action of a variable magnetic field; the first flow divider and the second flow divider are the same in structure. The invention further discloses a refrigerating and heating method of the magnetic refrigerator pointing to the stacked magnetic circuit. Magnetic field changes of different intensities are generated through the directional superposition type magnetic circuit design, the instantaneous continuous heat insulation refrigeration function is achieved, and the magnetic refrigeration effect is effectively guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of magnetic refrigeration, and in particular relates to a magnetic refrigerator with a directional superimposed magnetic circuit and a refrigeration and heating method. Background Art

[0002] Magnetic refrigeration technology is a refrigeration technology based on the magnetocaloric effect. Under the action of an external magnetic field, the temperature of magnetic materials changes, thereby generating cold. The magnetocaloric effect is achieved through the increase and decrease of magnetic entropy and thermal entropy. In order to keep the total entropy unchanged, the magnetocaloric material needs to be in an adiabatic environment. At this time, when an external magnetic field is applied to the magnetic material, the magnetic moments are neatly arranged, the magnetic entropy decreases, and the thermal entropy increases and releases heat; on the contrary, when the magnetic field is removed, the magnetic moments are disordered, the thermal entropy decreases, and heat needs to be absorbed, which has a cooling effect.

[0003] The patent application with application number CN202011032651.0 discloses a permanent magnet magnetic refrigerator with AMR technology as the core, including a refrigerator body, a mounting base is arranged inside the refrigerator body, a refrigerator cavity is arranged inside the refrigerator body, a refrigerator outer wall is arranged outside the refrigerator body, a double-sided permanent magnetic pole is arranged inside the refrigerator outer wall, a magnetic spring is movably connected to the inner side of the double-sided permanent magnetic pole, a magnetic field air gap channel is movably connected to the inner side of the refrigerator outer wall, and a valve pump body is movably connected to the end of the magnetic field air gap channel away from the refrigerator outer wall. A circulating sealed electromagnetic space is formed by four sets of sealed movable electromagnetic valves and electromagnetic gears; at the same time, the double-sided permanent magnetic poles inside the refrigerator cavity work simultaneously to generate a circulating magnetic field, thereby forming two sets of adiabatic magnetic fields; based on the thermodynamic principle of magnetic refrigeration and the Carnot cycle principle, the material temperature is reduced and heat is absorbed from the outside, thereby forming a refrigeration effect.

[0004] Existing traditional magnetic refrigerators have many mechanical moving parts and many moving components, which leads to high noise during operation. How to eliminate or reduce the noise of magnetic refrigerators is a technical problem that needs to be solved. Summary of the invention

[0005] The purpose of the present invention is to provide a magnetic refrigerator and a cooling and heating method with a directional superimposed magnetic circuit. The directional superimposed magnetic circuit design produces magnetic field changes of different intensities, and multiple channels act on the magnetic material in the slot-type magnetic regenerator to achieve instantaneous continuous adiabatic cooling function, effectively ensuring the magnetic refrigeration effect.

[0006] To achieve the above purpose, the technical solution used in the present invention is:

[0007] A magnetic refrigerator with a directional superposition magnetic circuit comprises: a rotor, a stator, a slot-type heat regenerator, a supporting rotating mechanism, and a shell. The rotor, the stator, and the slot-type heat regenerator are installed in the shell, and the supporting rotating mechanism is installed on the side wall outside the shell. The rotor has a cylindrical shape, comprising: a rotating shaft, a rotor bracket, and a magnet. A plurality of magnets are fixed on the bracket, and the rotating shaft is connected to the center position of the bracket. The plurality of magnets have the same axis to form a multi-layer structure. The plurality of magnets are arranged in a directional superposition manner. The magnetic field directions of the magnets on the upper and lower sides of the center plane are mirror-symmetrical, and the magnetic field directions from the inner layer to the outer layer are in a directional shape. The magnetic field directions of the magnets on the upper and lower sides of the center plane gradually increase in angle from the inside to the outside, and the two ends of the rotating shaft are respectively installed on supports. The stator has a cylindrical shape, and a circular stator through hole is provided at the center. The rotating shaft is passed through the stator through hole. ; Multiple slot-type heat regenerators are fixed on the outer wall of the stator; the slot-type heat regenerator is a closed structure, with magnetic materials and multiple loop pipes inside, and the magnetic materials cool / heat under the action of a changing magnetic field; the first diverter and the second diverter have the same structure, including: a diverter body, a diverter main pipe, a diverter plate, a diverter branch pipe, and an electromagnetic valve, multiple diverter main pipes are connected to the left side of the diverter body, multiple diverter plates are connected to the right side of the diverter body, multiple diverter branches are connected to the right side of the diverter plate, and the electromagnetic valve is arranged on the diverter branch pipe; support rollers, reducers, and AC servo motors, multiple support rollers are against the outer wall of the outer shell, the rotating shaft of the support roller is connected to the power output end of the reducer, and the power input end of the reducer is connected to the rotating shaft of the AC servo motor; the rotating shaft of the support roller is installed in the roller support, and the multiple roller supports are fixed on the main body bracket.

[0008] Furthermore, support rings are provided inside and outside the magnets at the same level, respectively. The outermost support ring is made of Q235 structural steel, and the inner support ring is made of stainless steel.

[0009] Furthermore, the thickness of the outermost support ring is 3-6 mm, and the thickness of the inner support ring is 0.2-1 mm.

[0010] Furthermore, the magnet is an N series sintered NdFeB magnet with a remanence of ≥1.4T.

[0011] Furthermore, the rotating shaft and the rotor bracket are connected by keys.

[0012] Furthermore, the magnet is a ring segment structure, the width of the inner magnet is smaller than the width of the outer magnet, and the number of the inner magnet is greater than the number of the outer magnet.

[0013] Furthermore, gap through grooves are respectively arranged on the upper and lower sides of the bracket, and the gap through grooves are located on the upper and lower sides of the center plane.

[0014] Furthermore, the supporting roller is a rubber roller, and among the multiple supporting rollers, one of them serves as a driving wheel and the rest serve as driven wheels.

[0015] Furthermore, the multiple solenoid valves of each diverter plate belong to the refrigeration circuit and the heating circuit respectively, and the solenoid valves are used to control the flow and closing of the diverter branch pipes on the refrigeration circuit / heating circuit.

[0016] A cooling and heating method for a magnetic refrigerator with a superimposed magnetic circuit, comprising:

[0017] The AC servo motor outputs power to the reducer, the reducer drives the support roller to rotate, the support roller uses friction to drive the shell to rotate, and the shell drives the rotor to rotate; the magnetic field formed by the magnet in the slot-type regenerator cuts the slot-type regenerator, and the magnetic material in the slot-type regenerator cools / heats under the action of the changing magnetic field;

[0018] When the magnetic field strength increases, the magnetic material heats up and generates heat, and the solenoid valve opens the solenoid valve of the heating circuit and closes the solenoid valve of the cooling circuit; when the magnetic field strength decreases, the magnetic material cools down and generates heat, and the solenoid valve opens the solenoid valve of the cooling circuit and closes the solenoid valve of the heating circuit.

[0019] The technical effects of the present invention include:

[0020] The magnetic refrigerator with a directional superimposed magnetic circuit proposed in the present invention realizes the change of the magnetic field structure. The changing magnetic fields of different intensities are generated by the directional superimposed magnetic circuit design. Multi-channels act on the magnetic material in the slot-type magnetic regenerator to realize instantaneous continuous adiabatic refrigeration function. It can realize continuous and silent operation, has strong reliability, and effectively guarantees the magnetic refrigeration effect.

[0021] The multi-channel magnetic refrigerator with a directional superimposed magnetic circuit acts on the magnetic material in the slot-type magnetic regenerator, realizing the instantaneous continuous adiabatic refrigeration function, making the rare earth metal material Gd and LaFeSiH series magnetic materials exert a greater magnetocaloric effect, effectively ensuring the magnetic refrigeration effect.

[0022] The invention can realize continuous silent operation and has high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural principle diagram of the magnetic refrigerator body in the present invention;

[0024] Figure 2 It is the structural principle diagram of the rotor in the present invention;

[0025] Figure 3 It is a structural principle diagram of the supporting rotating mechanism in the present invention;

[0026] Figure 4 It is a structural principle diagram of the stator in the present invention;

[0027] Figure 5 It is a schematic diagram of the connection between the stator and the slot-type heat regenerator in the present invention;

[0028] Figure 6 is a schematic structural diagram of the first diverter in the present invention;

[0029] Figure 7 is a schematic diagram of the side structure of the first diverter in the present invention;

[0030] Figure 8 It is a schematic diagram of the use status of the magnetic refrigerator pointing to the superposition magnetic circuit in the present invention. DETAILED DESCRIPTION

[0031] The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce the invention.

[0032] The present application improves the magnetic field of an existing magnetic refrigerator. This magnetic refrigerator with a directional superimposed magnetic circuit realizes a change in the magnetic field structure. The directional superimposed magnetic circuit design produces magnetic field changes of different intensities. Multi-channels act on the magnetic material in the slot-type magnetic regenerator to achieve an instantaneous continuous adiabatic refrigeration function, allowing rare earth metal materials Gd and LaFeSi series magnetic materials to exert a greater magnetocaloric effect, and can achieve continuous and silent operation. It has strong reliability and effectively guarantees the magnetic refrigeration effect, and can be used for magnetic refrigeration air conditioners and refrigerators.

[0033] like Figure 1 As shown, it is a structural principle diagram of the magnetic refrigerator 4 pointing to the superposition magnetic circuit in the present invention; Figure 2 , which is a structural schematic diagram of the rotor 41 in the present invention.

[0034] The magnetic refrigerator 4 pointing to the superimposed magnetic circuit includes: a rotor 41, a stator 42, a slot-type heat regenerator 43, a supporting rotating mechanism 44, and a shell 45. The rotor 41, the stator 42, and the slot-type heat regenerator 43 are installed in the shell 45, and the supporting rotating mechanism 44 is installed on the side wall outside the shell 45.

[0035] The rotor 41 has a cylindrical shape and includes a rotating shaft 411, a bracket 412, and a magnet 413. Multiple magnets 413 are fixed to the rotor bracket 412, and the rotating shaft 411 is connected to the center of the rotor bracket 412. The rotating shaft 411, the rotating shaft 411, and the rotor bracket 412 are connected by a key. A support ring 415 is fixed to the outside of the magnet 413 to enhance the overall strength of the multiple magnets. Both ends of the rotating shaft 411 are respectively mounted on the support.

[0036] Multiple magnets 413 have the same axis to form a multi-layer structure. Support rings 415 are respectively provided inside and outside the magnets 413 on the same layer. The outermost support ring 415 is 3-6 mm thick and made of Q235 structural steel. The inner support ring 415 is 0.2-1 mm thick and made of stainless steel.

[0037] The magnet 413 is a ring segment structure, the width of the inner magnet 413 is smaller than the width of the outer magnet 413, and the number of the inner magnet 413 is greater than the number of the outer magnet 413; multiple magnets 413 are arranged in a directional superposition, and the magnetic field directions of the magnets 413 on the upper and lower sides of the center plane are mirror-symmetrical. The magnetic field direction from the inner layer to the outer layer is directional, and the magnetic field direction (angle) of the magnets 413 on the upper and lower sides of the center plane gradually increases from the inside to the outside. The magnet 413 is an N series sintered NdFeB with a remanence ≥1.4T.

[0038] In order to reduce weight, gap through slots 416 are respectively provided on the upper and lower sides of the bracket 412, and the gap through slots 416 are located on the upper and lower sides of the center plane.

[0039] like Figure 3 FIG. 2 is a schematic diagram showing the structural principle of the supporting rotating mechanism 44 in the present invention.

[0040] The supporting rotating mechanism 44 includes: a supporting roller 441, a reducer, and an AC servo motor. Multiple supporting rollers 441 are against the outer wall of the outer shell 45. The rotating shaft of the supporting roller 441 is connected to the power output end of the reducer, and the power input end of the reducer is connected to the rotating shaft of the AC servo motor; the rotating shaft of the supporting roller 441 is installed in the roller support 442, and multiple roller supports 442 are fixed on the main body bracket 443.

[0041] The supporting roller 441 is a rubber roller, which can effectively reduce noise. Among the multiple supporting rollers 441, one is used as a driving wheel, and the rest are driven wheels.

[0042] The AC servo motor outputs power to the reducer, and the reducer drives the support roller 441 to rotate. The support roller 441 drives the housing 45 and the rotor 41 to rotate by friction.

[0043] like Figure 4 As shown, it is a structural principle diagram of the stator 42 in the present invention; Figure 5 , which is a schematic diagram of the connection between the stator 42 and the slot-type heat regenerator 43 in the present invention.

[0044] The stator 42 has a cylindrical shape and is composed of a plurality of stacked electrical steel plates, which is mainly used to reduce eddy currents. A circular stator through hole 421 is provided at the center, and a plurality of slot-type heat regenerators 43 are fixed on the outer wall of the stator 42. A protrusion 422 is provided at the outer end of the stator 42 for connecting the slot-type heat regenerator 43, and the rotating shaft 411 is passed through the stator through hole 421.

[0045] The trough-type heat regenerator 43 is a closed structure made of 3D printed insulation material. A magnetic material 432 and two loop pipes 431 are arranged inside. The loop pipe 431 is connected to the main pipeline. The magnetic material 432 cools / heats under the action of a changing magnetic field, and the loop pipe 431 is used to circulate heat exchange fluid.

[0046] The arrangement of multiple magnets 413 of the magnetic refrigerator 4 with a directional superimposed magnetic circuit realizes changes in the magnetic field structure, intensity and direction. The directional superimposed magnetic circuit design produces magnetic field changes of different intensities. Multi-channel action on the magnetic material in the slot-type magnetic regenerator realizes instantaneous continuous adiabatic refrigeration function, allowing the rare earth metal material Gd and LaFeSi series magnetic material 432 to exert a greater magnetocaloric effect, achieve continuous and silent operation, have strong reliability, and effectively ensure the magnetic refrigeration effect.

[0047] like Figure 6 As shown, it is a schematic diagram of the structure of the first diverter 5 in the present invention; Figure 7 , which is a schematic diagram of the side structure of the first diverter 5 in the present invention.

[0048] The first flow divider 5 at the hot end is connected to the main line between the magnetic refrigerator 4 and the heat exchanger 6 pointing to the superimposed magnetic circuit, and the second flow divider 8 at the cold end is connected between the water pump 2 and the magnetic refrigerator 4 pointing to the superimposed magnetic circuit.

[0049] The first flow divider 5 and the second flow divider 8 have the same structure, including: a flow divider body 51, a flow divider main pipe 52, a flow divider plate 53, a flow divider branch pipe 54, and a solenoid valve 55. A plurality of flow divider main pipes 52 are connected to the left side of the flow divider body 51, a plurality of flow divider plates 53 are connected to the right side of the flow divider body 51, a plurality of flow divider branch pipes 54 are connected to the right side of the flow divider plate 53, and a solenoid valve 55 is arranged on the flow divider branch pipe 54. The flow divider main pipe 52 is connected to the main pipe. The plurality of solenoid valves 55 of each flow divider plate 53 belong to the refrigeration circuit and the heating circuit respectively.

[0050] The solenoid valve 55 is used to control the flow and closing of the branch pipe 54 on the refrigeration circuit / heating circuit. When cooling, the heating circuit is closed and the refrigeration circuit is open; when heating, the refrigeration circuit is closed and the heating circuit is open.

[0051] The multiple branch pipes 54 at the hot end are connected to the main pipe on the outlet side of the magnetic refrigerator 4 pointing to the superimposed magnetic circuit, and the heat exchange fluid flows through the loop pipe 431 of the magnetic refrigerator 4 pointing to the superimposed magnetic circuit, the branch pipe 54, the diverter plate 53, the diverter body 51, and the diverter main pipe 52 in sequence to enter the main pipe.

[0052] The multiple shunt branches 54 at the cold end are connected to the main pipe on the inlet side of the magnetic refrigerator 4 pointing to the superimposed magnetic circuit, and the heat exchange fluid flows through the main pipe, the shunt main pipe 52, the diverter body 51, the diverter plate 53, the shunt branch pipe 54 in sequence and enters the loop pipe 431 of the magnetic refrigerator 4 pointing to the superimposed magnetic circuit.

[0053] like Figure 8 The figure is a schematic diagram of the use state of the magnetic refrigerator pointing to the superposition magnetic circuit in the present invention.

[0054] The refrigeration system comprises: a control cabinet 1, a power pump 2, a filter 3, a magnetic refrigerator 4 pointing to a superimposed magnetic circuit, a first diverter 5, a heat exchanger 6, a radiator 7, and a second diverter 8.

[0055] The control cabinet 1 is connected to the power pump 2, the AC servo motor, and the solenoid valve 55 through cables, and is used to control the start and stop of the power pump 2 and the AC servo motor and the opening / closing of the solenoid valve 55. The control cabinet 1 is provided with a controller for controlling the power pump 2, the AC servo motor, and the solenoid valve 55.

[0056] The power pump 2, whose outlet is connected to the inlet of the second flow divider 8 through the main pipeline, provides power for the heat exchange fluid;

[0057] The filter 3, whose outlet is connected to the inlet of the power pump 2 through the main pipe, and whose inlet is connected to the outlet of the heat exchanger 6 through the main pipe, is used to filter circulating impurities of the heat exchange fluid;

[0058] The magnetic refrigerator 4 of the superimposed magnetic circuit has its outlet connected to the inlet of the first flow divider 5 through the main line, and its inlet connected to the outlet of the second flow divider 8 through the main line, cooling / heating through the magnetocaloric effect, and transferring the cold / heat to the heat exchange fluid;

[0059] A first flow divider 5, used for dividing / collecting the heat exchange fluid, wherein the outlet of the first flow divider 5 is connected to the inlet of the heat exchanger 6 through a main pipe;

[0060] The heat exchanger 6 has an inlet connected to the inlet of the filter 3 through a main pipeline for heat exchange; and a circulation port connected to the radiator 7 through a circulation pipeline;

[0061] The radiator 7 is used to conduct away the cold / heat from the heat exchanger 6 .

[0062] The second flow divider 8 is used for dividing / collecting the heat exchange fluid, and its outlet is connected to the inlet of the magnetic refrigerator 4 of the superimposed magnetic circuit through the main pipeline.

[0063] The cooling and heating method of the magnetic refrigerator with a superimposed magnetic circuit is as follows:

[0064] Step 1: The control cabinet 1 issues a command, the AC servo motor starts, the support roller 441 drives the housing 45 of the magnetic refrigerator 4 pointing to the superimposed magnetic circuit to rotate, and the housing 45 drives the rotor 41 to rotate;

[0065] Step 2: The magnetic field formed by the magnet 413 in the slot-type heat regenerator 43 cuts the slot-type heat regenerator 43, and the magnetic material 432 in the slot-type heat regenerator 43 is cooled / heated under the action of the changing magnetic field;

[0066] Step 3: When the magnetic field strength increases, the magnetic material 432 heats up, and the solenoid valve 55 opens the solenoid valve 55 of the heating circuit and closes the solenoid valve 55 of the cooling circuit;

[0067] The heat exchange fluid enters the main line from the loop pipe 431 , and enters the heat exchanger 6 from the main line. The heat exchanger 6 exchanges heat with the radiator 7 .

[0068] Step 4: When the magnetic field strength decreases, the magnetic material 432 cools down, and the solenoid valve 55 opens the solenoid valve 55 of the refrigeration circuit and closes the solenoid valve 55 of the heating circuit.

[0069] The heat exchange fluid enters the main line from the loop pipe 431 , and enters the heat exchanger 6 from the main line. The heat exchanger 6 exchanges cold energy with the radiator 7 .

[0070] The terms used in the present invention are illustrative and exemplary, rather than restrictive. Since the present invention can be implemented in various forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A magnetic refrigerator with a directional superposition magnetic circuit, characterized in that: include: A rotor, a stator, a slot-type heat regenerator, a supporting rotating mechanism, and a shell. The rotor, the stator, and the slot-type heat regenerator are installed in the shell, and the supporting rotating mechanism is installed on the side wall outside the shell; The rotor is cylindrical in shape, including: a rotating shaft, a rotor bracket, and a magnet. Multiple magnets are fixed on the bracket, and the rotating shaft is connected to the center of the bracket; multiple magnets have the same axis to form a multi-layer structure, and multiple magnets are arranged in a directional superposition manner. The magnetic field directions of the magnets on the upper and lower sides of the center plane are mirror-symmetrical, and the magnetic field directions from the inner layer to the outer layer are directional. The magnetic field directions of the magnets on the upper and lower sides of the center plane gradually increase in angle from the inside to the outside, and the two ends of the rotating shaft are respectively installed on the support; the stator is cylindrical in shape, and a circular stator through hole is set at the center, and the rotating shaft is passed through the stator through hole; multiple slot-type heat regenerators are fixed on the outer wall of the stator; the slot-type heat regenerator is a closed structure, and magnetic materials and Multiple loop pipes, magnetic materials cool / heat under the action of changing magnetic field; the first diverter and the second diverter have the same structure, including: a diverter body, a diverter main pipe, a diverter plate, a diverter branch pipe, and an electromagnetic valve. Multiple diverter main pipes are connected to the left side of the diverter body, multiple diverter plates are connected to the right side of the diverter body, multiple diverter branch pipes are connected to the right side of the diverter plate, and the electromagnetic valve is arranged on the diverter branch pipe; support rollers, reducers, and AC servo motors, multiple support rollers are against the outer wall of the shell, the rotating shaft of the support rollers is connected to the power output end of the reducer, and the power input end of the reducer is connected to the rotating shaft of the AC servo motor; the rotating shaft of the support roller is installed in the roller support, and the multiple roller supports are fixed on the main body bracket.

2. The magnetic refrigerator with a directional superposition magnetic circuit as claimed in claim 1, characterized in that: Support rings are provided inside and outside the magnets at the same level. The outermost support ring is made of Q235 structural steel, and the inner support ring is made of stainless steel.

3. The magnetic refrigerator with a directional superposition magnetic circuit as claimed in claim 2, characterized in that: The thickness of the outermost support ring is 3-6 mm, and the thickness of the inner support ring is 0.2-1 mm.

4. The magnetic refrigerator with a directional superposition magnetic circuit as claimed in claim 1, characterized in that: The magnet is N series sintered NdFeB with remanence ≥1.4T.

5. The magnetic refrigerator with a directional superposition magnetic circuit as claimed in claim 1, characterized in that: The rotating shaft and the rotor bracket are connected by keys.

6. The magnetic refrigerator with a directional superposition magnetic circuit as claimed in claim 1, characterized in that: The magnet is a ring segment structure, the width of the inner magnet is smaller than the width of the outer magnet, and the number of the inner magnet is greater than the number of the outer magnet.

7. The magnetic refrigerator with a directional superposition magnetic circuit as claimed in claim 1, characterized in that: The bracket is provided with gap through grooves on the upper and lower sides respectively, and the gap through grooves are located on the upper and lower sides of the center plane.

8. The magnetic refrigerator with a directional superposition magnetic circuit as claimed in claim 1, characterized in that: The supporting rollers are rubber rollers. Among the multiple supporting rollers, one is used as a driving wheel and the others are driven wheels.

9. The magnetic refrigerator with a directional superposition magnetic circuit as claimed in claim 1, characterized in that: The multiple solenoid valves of each diversion plate belong to the refrigeration circuit and the heating circuit respectively. The solenoid valves are used to control the flow and closing of the diversion branch pipes on the refrigeration circuit / heating circuit.

10. The cooling and heating method of a magnetic refrigerator with a directional superposition magnetic circuit according to any one of claims 1 to 9, characterized in that: include: The AC servo motor outputs power to the reducer, the reducer drives the support roller to rotate, the support roller uses friction to drive the shell to rotate, and the shell drives the rotor to rotate; the magnetic field formed by the magnet in the slot-type regenerator cuts the slot-type regenerator, and the magnetic material in the slot-type regenerator cools / heats under the action of the changing magnetic field; When the magnetic field strength increases, the magnetic material heats up and generates heat, and the solenoid valve opens the solenoid valve of the heating circuit and closes the solenoid valve of the cooling circuit; when the magnetic field strength decreases, the magnetic material cools down and generates heat, and the solenoid valve opens the solenoid valve of the cooling circuit and closes the solenoid valve of the heating circuit.

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