Compact room-temperature magnetic refrigerator and refrigeration method thereof

Abstract

The present invention discloses a compact room-temperature magnetic refrigerator, comprising: a cold-end heat exchanger, a left-side regenerator, an I-shaped magnet, a left-side hot-end heat exchanger, a left-side corrugated liquid storage tank, a left-side buffer pressurizer, an extension rod, a right-side buffer pressurizer, a right-side corrugated liquid storage tank, a right-side hot-end heat exchanger, and a right-side regenerator. The present invention also discloses a cooling method for the compact room-temperature magnetic refrigerator. The present invention utilizes a single drive source to drive the I-shaped magnet and drive and reverse the heat exchange fluid, thereby achieving the AMR cycle required for the room-temperature magnetic refrigerator.

Description

Technical Field

[0001] The present invention belongs to the technical field of room-temperature magnetic refrigeration, and in particular relates to a compact room-temperature magnetic refrigerator and a refrigeration method thereof. Background Art

[0002] Room-temperature magnetic refrigeration is a solid-state refrigeration technology and a novel refrigeration technology. With the development of new materials and technologies, the development of room-temperature magnetic refrigeration technology has received widespread attention and made significant progress in the past decade or so. This technology meets the requirements of today's sustainable development and is considered a promising green refrigeration technology to replace traditional refrigeration technologies.

[0003] Room-temperature magnetic refrigeration technology utilizes the magnetocaloric effect of magnetic refrigeration materials to achieve refrigeration. According to the principle of the magnetocaloric effect, magnetic refrigeration materials will heat up or cool down under the influence of a changing magnetic field. Currently, room-temperature magnetic refrigerators typically use active regenerative heat recovery (AMR) technology to achieve refrigeration. This technology requires the heat exchange fluid to flow through the regenerator filled with magnetic refrigeration material in both forward and reverse directions during magnetization and demagnetization, respectively, to form a certain temperature gradient in the magnetic refrigerant within the regenerator. This creates a high-temperature end and a low-temperature end at both ends of the regenerator, resulting in a large temperature difference between the two ends. This also creates a large temperature difference between the heat exchange fluid at both ends, thus achieving refrigeration.

[0004] A room-temperature magnetic refrigerator typically consists of a magnetic field system, a regenerator, a heat exchanger, a heat transfer fluid, and a driver. The regenerator is one of the key components of a room-temperature magnetic refrigerator. By periodically magnetizing and demagnetizing the regenerator through a magnetic field and coordinating the reciprocating flow of the heat transfer fluid, a temperature gradient is formed inside the regenerator, creating a high-temperature end and a low-temperature end at each end of the regenerator, thereby achieving cooling. Currently, room-temperature magnetic refrigerators typically use AMR technology to increase the temperature span across the regenerator. This requires the heat transfer fluid to flow through the regenerator as the regenerator is magnetized and demagnetized, forming a temperature gradient at both ends of the regenerator. Therefore, a pump is usually required as a fluid driver, and a fluid distributor is usually required as a fluid switch. In room-temperature magnetic refrigerators, the magnetic field driver, fluid driver, and fluid distributor are usually the basic configuration. In some large room-temperature magnetic refrigerators, the design and manufacture of the fluid distributor are very complex, resulting in problems such as difficult sealing and increased mechanical losses. Summary of the Invention

[0005] The object of the present invention is to provide a compact room-temperature magnetic refrigerator and a refrigeration method thereof, which adopts a single driving source to realize the driving of the I-shaped magnet and the driving and reversing of the heat exchange fluid, thereby realizing the AMR cycle required by the room-temperature magnetic refrigerator.

[0006] To achieve the above objectives, the technical solutions used in the present invention are:

[0007] A compact room-temperature magnetic refrigerator comprises: a cold-end heat exchanger, a left-side heat regenerator, an I-shaped magnet, a left-side hot-end heat exchanger, a left-side corrugated liquid storage tank, a left-side buffer pressurizer, an extension rod, a right-side buffer pressurizer, a right-side corrugated liquid storage tank, a right-side hot-end heat exchanger, and a right-side heat regenerator; the left-side port of the cold-end heat exchanger and the upper port of the left-side hot-end heat exchanger are respectively connected to the two ends of the left-side heat regenerator through pipelines, and the lower port of the left-side hot-end heat exchanger is connected to the right-side corrugated liquid storage tank through a pipeline; the right-side port of the cold-end heat exchanger and the upper port of the right-side hot-end heat exchanger are respectively connected to the right-side heat regenerator through pipelines. The left and right corrugated liquid storage tanks are located on both ends of the extension rod, and the lower port of the right hot end heat exchanger is connected to the left corrugated liquid storage tank through a pipeline; the I-shaped magnet is located between the left and right heat regenerators, and the I-shaped magnet is respectively provided with a left magnet opening and a right magnet opening on both sides. The I-shaped magnet is installed on the driving component, and the lower part of the I-shaped magnet is connected to an extension rod; the left corrugated liquid storage tank and the right corrugated liquid storage tank are located on the left and right sides of the lower part of the extension rod, and the two ends of the left buffer pressurizer are respectively connected between the extension rod and the left corrugated liquid storage tank, and the two ends of the right buffer pressurizer are respectively connected between the extension rod and the right corrugated liquid storage tank.

[0008] Furthermore, the inner cavities of the left and right regenerators are respectively filled with magnetic refrigerants, the left magnet opening is aligned with the left regenerator, the right magnet opening is aligned with the right regenerator, and the cold end heat exchanger is placed in the cold room.

[0009] Furthermore, the driving components include: a slide rail, a slider, a motor, and a rocker arm. The I-shaped magnet is fixed on the slider, the slider is installed in the slide groove of the slide rail, the motor is fixed on the side of the slide rail, and a hinge plate is provided at the end of the motor's rotating shaft. The side of the hinge plate is hinged to one end of the rocker arm, and the other end of the rocker arm is hinged to the slider.

[0010] Furthermore, the left buffer pressurizer and the right buffer pressurizer respectively include: a spring and a push plate, the inner ends of the two springs are respectively connected to the two sides of the extension rod, and the outer ends of the two springs are respectively connected to the push plates.

[0011] Furthermore, the I-shaped magnet includes: a connecting piece, a soft magnetic material frame and multiple permanent magnets. The multiple permanent magnets are fixed on the upper and lower sides of the soft magnetic material frame. The connecting piece is connected between the permanent magnets on the upper and lower sides. The left magnet opening and the right magnet opening are formed on both sides of the connecting piece.

[0012] Furthermore, the magnetic field directions of the permanent magnets on the upper and lower sides of the left magnet opening are the same, and the magnetic field directions of the permanent magnets on the upper and lower sides of the right magnet opening are the same.

[0013] A refrigeration method for a compact room-temperature magnetic refrigerator, comprising:

[0014] The I-shaped magnet moves to the left, driving the extension rod to move to the left. The extension rod squeezes the left buffer pressurizer, which squeezes the left corrugated liquid storage tank to shrink. The left regenerator enters the left magnet opening, magnetizes and heats the heat exchange fluid. The right regenerator leaves the right magnet opening, demagnetizes and cools the heat exchange fluid.

[0015] The left buffer pressurizer compresses the left corrugated liquid storage tank, and the heat exchange fluid in the left corrugated liquid storage tank is squeezed out and flows through the right hot end heat exchanger and enters the right regenerator for cooling. After cooling, the heat exchange fluid enters the cold end heat exchanger for heat exchange, and after heat exchange, enters the left regenerator for heating. After heating, the heat exchange fluid enters the left hot end heat exchanger for heat exchange, and after heat exchange, the heat exchange fluid enters the right corrugated liquid storage tank;

[0016] The I-shaped magnet moves to the right, driving the extension rod to move to the right. The extension rod squeezes the right buffer pressurizer, which squeezes the right corrugated liquid storage tank to shrink. The right regenerator enters the right magnet opening, magnetizes and heats the heat exchange fluid. The left regenerator leaves the left magnet opening, demagnetizes and cools the heat exchange fluid.

[0017] The right buffer pressurizer compresses the right corrugated liquid storage tank, and the heat exchange fluid in the right corrugated liquid storage tank is squeezed out, flows through the left hot end heat exchanger and enters the left regenerator for cooling. After cooling, the heat exchange fluid enters the cold end heat exchanger for heat exchange, and after heat exchange, enters the right regenerator for heating. After heating, the heat exchange fluid enters the right hot end heat exchanger for heat exchange, and after heat exchange, the heat exchange fluid enters the left corrugated liquid storage tank.

[0018] Preferably, as the I-shaped magnet moves back and forth periodically, a temperature gradient with lower temperature at the top and higher temperature at the bottom is gradually formed inside the left and right heat regenerators. The heat exchange fluid takes away the heat from the cold room when flowing through the cold end heat exchanger, thereby achieving refrigeration; the high-temperature fluid at the lower end discharges the heat when passing through the left and right hot end heat exchangers.

[0019] Preferably, the rotating shaft of the motor drives the hinged disk to rotate, and the hinged disk drives the slider to move back and forth left and right on the slide rail through the rocker arm, and the slider drives the I-shaped magnet to move back and forth left and right, so that the left heat regenerator moves back and forth in and out of the left magnet opening, and the right heat regenerator moves back and forth in and out of the right magnet opening, thereby realizing repeated periodic magnetization or demagnetization of the left heat regenerator and the right heat regenerator.

[0020] The technical effects of the present invention include:

[0021] The present invention adopts a single driving source to realize the driving of the I-shaped magnet and the driving and reversing of the heat exchange fluid, thereby realizing the AMR cycle required by the room temperature magnetic refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is a schematic diagram of the structure of the compact room-temperature magnetic refrigerator of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the I-shaped magnet in the present invention;

[0024] Figure 3 Schematic diagram of the temperature gradient generated inside the left and right regenerators under the action of the external magnetic field system in the present invention;

[0025] Figure 4 1. It is a magnetic field and time sequence diagram of magnetization / demagnetization of the left regenerator and the right regenerator in the present invention;

[0026] Figure 5 It is a timing diagram of the heat exchange fluid and time in the left and right regenerators in the present invention. DETAILED DESCRIPTION

[0027] The following description sufficiently illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce the invention.

[0028] like Figure 1 The figure shows the structural principle diagram of the compact room temperature magnetic refrigerator in the present invention.

[0029] A compact room-temperature magnetic refrigerator comprises: a cold-end heat exchanger 1, a left-side regenerator 2, an I-shaped magnet 3, a left-side hot-end heat exchanger 4, a left-side corrugated liquid storage tank 5, a left-side buffer pressurizer 6, an extension rod 7, a right-side buffer pressurizer 8, a right-side corrugated liquid storage tank 9, a right-side hot-end heat exchanger 10, and a right-side regenerator 11.

[0030] The left port of the cold end heat exchanger 1 and the upper port of the left hot end heat exchanger 4 are connected to the two ends of the left regenerator 2 through pipelines, and the lower port of the left hot end heat exchanger 4 is connected to the right corrugated liquid storage tank 9 through a pipeline; the right port of the cold end heat exchanger 1 and the upper port of the right hot end heat exchanger 10 are connected to the two ends of the right regenerator 11 through pipelines, and the lower port of the right hot end heat exchanger 10 is connected to the left corrugated liquid storage tank 5 through a pipeline; the I-shaped magnet 3 is located on the left regenerator 2 and the right regenerator 11, the I-shaped magnet 3 is respectively provided with a left magnet opening 34 and a right magnet opening 35 on both sides, the I-shaped magnet 3 is installed on the driving component, and the lower part of the I-shaped magnet 3 is connected with an extension rod 7; the left corrugated liquid storage tank 5 and the right corrugated liquid storage tank 9 are located on the left and right sides of the lower part of the extension rod 7, the two ends of the left buffer pressurizer 6 are respectively connected between the extension rod 7 and the left corrugated liquid storage tank 5, and the two ends of the right buffer pressurizer 8 are respectively connected between the extension rod 7 and the right corrugated liquid storage tank 9.

[0031] The inner cavities of the left regenerator 2 and the right regenerator 11 are respectively filled with magnetic refrigerants. The left magnet opening 34 is aligned with the left regenerator 2, and the right magnet opening 35 is aligned with the right regenerator 11.

[0032] The drive components include a slide rail, a slider, a motor, and a rocker arm. The I-shaped magnet 3 is fixed to the slider, which is mounted in the slide rail's slot. The motor is fixed to the side of the slide rail. A hinged disc is provided at the end of the motor's rotating shaft. The side of the hinged disc is hinged to one end of the rocker arm, and the other end of the rocker arm is hinged to the slider. The motor's rotating shaft rotates the hinged disc, which, through the rocker arm, drives the slider to move back and forth on the slide rail. The slider drives the I-shaped magnet 3 back and forth, causing the left regenerator 2 to reciprocate in and out of the left magnet opening, and the right regenerator 11 to reciprocate in and out of the right magnet opening, achieving repeated periodic magnetization and demagnetization of the left and right regenerators 2 and 11.

[0033] In the present invention, the left and right buffer pressurizers 6 and 8 act to buffer and delay fluid flow, ensuring that the movement of the I-shaped magnet 3 is synchronized with the flow of the heat exchange fluid, operating in a predetermined sequence. The left and right buffer pressurizers 6 and 8 comprise springs and push plates. The inner ends of the two springs are connected to the sides of the extension rod 7, while the outer ends of the two springs are connected to the push plates.

[0034] The cold end heat exchanger 1 is placed in the cold chamber 12 .

[0035] like Figure 2 , which is a schematic structural diagram of the I-shaped magnet 3 in the present invention.

[0036] The I-shaped magnet 3 comprises a plurality of permanent magnets 31, a connector 32, and a soft magnetic material frame 33. The permanent magnets 31 are fixed to the upper and lower sides of the soft magnetic material frame 33, and the connector 32 is connected between the permanent magnets 31 on both sides. A left magnet opening 34 and a right magnet opening 35 are formed on both sides of the connector 32. The magnetic fields of the permanent magnets 31 above and below the left magnet opening 34 have the same direction, and the magnetic fields of the permanent magnets 31 above and below the right magnet opening 35 have the same direction.

[0037] The arrows indicate the magnetization direction of the permanent magnet 31. The connector 32 is made of non-ferromagnetic material. The left and right magnet openings 34 and 35 provide usable magnetic field space, enabling magnetization of the left and right regenerators 2 and 11. As the I-shaped magnet 3 reciprocates left and right, it periodically magnetizes and demagnetizes the left and right regenerators 2 and 11.

[0038] like Figure 3 , which is a schematic diagram of the temperature gradient generated inside the left regenerator 2 and the right regenerator 11 under the action of the external magnetic field system in the present invention.

[0039] The three lines in the figure are the magnetization line, the middle line and the demagnetization line from top to bottom, the horizontal axis is the distance, and the vertical axis is the temperature.

[0040] When the compact room-temperature magnetic refrigerator reaches a stable state, a temperature gradient forms inside the left regenerator 2 and the right regenerator 11. When the left regenerator 2 and the right regenerator 11 are magnetized, the temperature of the magnetic refrigerant and the stationary heat exchange fluid inside rises to the magnetization line position simultaneously.

[0041] Taking the left regenerator 2 as an example, when the left regenerator 2 is magnetized, the heat exchange fluid flows downward, and the temperature line gradually approaches the middle line. When the left regenerator 2 is demagnetized, the temperature line moves down to the demagnetization line, and the heat exchange fluid flows upward, and the temperature line gradually moves up to the middle line. After that, the next cycle is carried out, and this cycle repeats to achieve cooling.

[0042] like Figure 4 , which is a magnetic field and time sequence diagram of magnetization / demagnetization of the left regenerator 2 and the right regenerator 11 in the present invention;

[0043] The solid line represents the magnetization / demagnetization timing of the left regenerator 2 , and the dotted line represents the magnetization / demagnetization timing of the right regenerator 11 . The left regenerator 2 and the right regenerator 11 are magnetized and demagnetized alternately periodically.

[0044] like Figure 5 As shown, it is a timing diagram of the heat exchange fluid and time in the left regenerator 2 and the right regenerator 11 in the present invention.

[0045] The solid line represents counterclockwise flow, and the dotted line represents clockwise flow, which is synchronized with the left regenerator 2 and the right regenerator 11.

[0046] When the I-shaped magnet 3 moves to the left, the left regenerator 2 is magnetized and the right regenerator 11 is demagnetized. At this time, the heat exchange fluid flows through the circuit counterclockwise (according to Figure 1 The heat exchange fluid in the left regenerator 2 flows downward, and the heat exchange fluid in the right regenerator 11 flows upward. When the I-shaped magnet 3 moves to the right, the right regenerator 11 is magnetized, and the left regenerator 2 is demagnetized. At this time, the heat exchange fluid flows clockwise (according to the Figure 1 The heat exchange fluid in the right regenerator 11 flows downward, and the heat exchange fluid in the left regenerator 2 flows upward; the outlet of the right corrugated liquid storage tank 9 is connected to the left hot-end heat exchanger 4, and the left corrugated liquid storage tank 5 is connected to the right hot-end heat exchanger 10. The I-shaped magnet 3 circulates back and forth to realize the AMR cycle and achieve cooling.

[0047] The cooling method of the compact room temperature magnetic refrigerator has the following specific steps:

[0048] Step 1: The I-shaped magnet 3 moves to the left, driving the extension rod 7 to move to the left. The extension rod 7 squeezes the left buffer pressurizer 6, which in turn squeezes the left corrugated liquid storage tank 5 to contract. The left regenerator 2 enters the left magnet opening 34, magnetizing and heating the heat exchange fluid. The right regenerator 11 leaves the right magnet opening 35, demagnetizing and cooling the heat exchange fluid.

[0049] The I-shaped magnet 3 and the extension rod 7 as well as the left buffer pressurizer 6 and the right buffer pressurizer 8 thereon can move left and right, and the other components are fixed.

[0050] Step 2: The left buffer pressurizer 6 compresses the left corrugated liquid storage tank 5. The heat exchange fluid in the left corrugated liquid storage tank 5 is squeezed out and flows through the right hot-end heat exchanger 10 to enter the right regenerator 11 for cooling. After cooling, the heat exchange fluid enters the cold-end heat exchanger 1 for heat exchange. After heat exchange, it enters the left regenerator 2 for heating. After heating, the heat exchange fluid enters the left hot-end heat exchanger 4 for heat exchange. After heat exchange, the heat exchange fluid enters the right corrugated liquid storage tank 9.

[0051] Step 3: The I-shaped magnet 3 moves to the right, driving the extension rod 7 to move to the right. The extension rod 7 squeezes the right buffer pressurizer 8, which in turn squeezes the right corrugated liquid storage tank 9 to contract. The right regenerator 11 enters the right magnet opening 35, magnetizes, and heats the heat exchange fluid. The left regenerator 2 leaves the left magnet opening 34, demagnetizes, and cools the heat exchange fluid.

[0052] Step 4: The right buffer pressurizer 8 compresses the right corrugated liquid storage tank 9, and the heat exchange fluid in the right corrugated liquid storage tank 9 is squeezed out and flows through the left hot end heat exchanger 4 into the left regenerator 2 for cooling. After cooling, the heat exchange fluid enters the cold end heat exchanger 1 for heat exchange, and after heat exchange, enters the right regenerator 11 for heating. After heating, the heat exchange fluid enters the right hot end heat exchanger 10 for heat exchange, and the heat exchange fluid after heat exchange enters the left corrugated liquid storage tank 5.

[0053] As the I-shaped magnet 3 periodically reciprocates, a temperature gradient gradually forms inside the left regenerator 2 and the right regenerator 11, with a lower temperature at the top and a higher temperature at the bottom. The heat exchange fluid removes heat from the cold chamber 12 as it flows through the cold-end heat exchanger 1, achieving cooling. The high-temperature fluid at the lower end then dissipates heat as it passes through the left and right hot-end heat exchangers 4 and 10.

[0054] The terms used in the present invention are descriptive and exemplary, rather than restrictive. Since the present invention can be embodied in many 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 foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. Therefore, all changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A compact room temperature magnetic refrigerator, characterized in that: include: Cold-end heat exchanger, left-side heat regenerator, I-shaped magnet, left-side hot-end heat exchanger, left-side corrugated liquid storage tank, left-side buffer pressurizer, extension rod, right-side buffer pressurizer, right-side corrugated liquid storage tank, right-side hot-end heat exchanger, right-side heat regenerator; the left-side port of the cold-end heat exchanger and the upper port of the left-side hot-end heat exchanger are respectively connected to the two ends of the left-side heat regenerator through pipelines, and the lower port of the left-side hot-end heat exchanger is connected to the right-side corrugated liquid storage tank through a pipeline; the right-side port of the cold-end heat exchanger and the upper port of the right-side hot-end heat exchanger are respectively connected to the two ends of the right-side heat regenerator through pipelines, and the lower port of the right-side hot-end heat exchanger is connected to the left-side corrugated liquid storage tank through a pipeline; the I-shaped magnet is located between the left-side heat regenerator and the right-side heat regenerator, and the I-shaped The magnet is respectively provided with a left magnet opening and a right magnet opening on both sides, the I-shaped magnet is installed on the driving component, the lower part of the I-shaped magnet is connected to an extension rod, the driving component includes a motor, and the driving component drives the I-shaped magnet to move back and forth left and right; the inner cavities of the left and right heat regenerators are respectively filled with magnetic refrigerants, the left magnet opening is aligned with the left heat regenerator, and the right magnet opening is aligned with the right heat regenerator, and the cold end heat exchanger is placed in the cold room; the left and right corrugated liquid storage tanks are located on the left and right sides of the lower part of the extension rod, and the two ends of the left buffer pressurizer are respectively connected between the extension rod and the left corrugated liquid storage tank, and the two ends of the right buffer pressurizer are respectively connected between the extension rod and the right corrugated liquid storage tank.

2. The compact room temperature magnetic refrigerator according to claim 1, wherein: The driving components also include: a slide rail, a slider, and a rocker arm. The I-shaped magnet is fixed on the slider, the slider is installed in the slide groove of the slide rail, the motor is fixed on the side of the slide rail, and a hinge plate is provided at the end of the motor's rotating shaft. The side of the hinge plate is hinged to one end of the rocker arm, and the other end of the rocker arm is hinged to the slider.

3. The compact room temperature magnetic refrigerator according to claim 1, wherein: The left buffer pressurizer and the right buffer pressurizer respectively include: a spring and a push plate. The inner ends of the two springs are respectively connected to both sides of the extension rod, and the outer ends of the two springs are respectively connected to the push plates.

4. The compact room-temperature magnetic refrigerator according to claim 1, wherein: The I-shaped magnet includes: a connector, a soft magnetic material frame and multiple permanent magnets. The multiple permanent magnets are fixed on the upper and lower sides of the soft magnetic material frame. The connector is connected between the permanent magnets on the upper and lower sides. The left magnet opening and the right magnet opening are formed on both sides of the connector.

5. The compact room temperature magnetic refrigerator according to claim 4, characterized in that: The magnetic field directions of the permanent magnets on the upper and lower sides of the left magnet opening are the same, and the magnetic field directions of the permanent magnets on the upper and lower sides of the right magnet opening are the same.

6. The refrigeration method of the compact room-temperature magnetic refrigerator according to any one of claims 1 to 5, characterized in that: include: The I-shaped magnet moves to the left, driving the extension rod to move to the left. The extension rod squeezes the left buffer pressurizer, which squeezes the left corrugated liquid storage tank to shrink. The left regenerator enters the left magnet opening, magnetizes and heats the heat exchange fluid. The right regenerator leaves the right magnet opening, demagnetizes and cools the heat exchange fluid. The left buffer pressurizer compresses the left corrugated liquid storage tank, and the heat exchange fluid in the left corrugated liquid storage tank is squeezed out and flows through the right hot end heat exchanger and enters the right regenerator for cooling. After cooling, the heat exchange fluid enters the cold end heat exchanger for heat exchange, and after heat exchange, enters the left regenerator for heating. After heating, the heat exchange fluid enters the left hot end heat exchanger for heat exchange, and after heat exchange, the heat exchange fluid enters the right corrugated liquid storage tank; The I-shaped magnet moves to the right, driving the extension rod to move to the right. The extension rod squeezes the right buffer pressurizer, which squeezes the right corrugated liquid storage tank to shrink. The right regenerator enters the right magnet opening, magnetizes and heats the heat exchange fluid. The left regenerator leaves the left magnet opening, demagnetizes and cools the heat exchange fluid. The right buffer pressurizer compresses the right corrugated liquid storage tank, and the heat exchange fluid in the right corrugated liquid storage tank is squeezed out, flows through the left hot end heat exchanger and enters the left regenerator for cooling. After cooling, the heat exchange fluid enters the cold end heat exchanger for heat exchange, and after heat exchange, enters the right regenerator for heating. After heating, the heat exchange fluid enters the right hot end heat exchanger for heat exchange, and after heat exchange, the heat exchange fluid enters the left corrugated liquid storage tank.

7. The refrigeration method of the compact room temperature magnetic refrigerator according to claim 6, characterized in that: As the I-shaped magnet moves back and forth periodically, a temperature gradient with lower temperature at the top and higher temperature at the bottom gradually forms inside the left and right heat regenerators. The heat exchange fluid takes away the heat from the cold room when flowing through the cold-end heat exchanger, achieving cooling; the high-temperature fluid at the lower end discharges the heat when passing through the left and right hot-end heat exchangers.

8. The refrigeration method of the compact room temperature magnetic refrigerator according to claim 6, characterized in that: The motor's rotating shaft drives the hinged disk to rotate, and the hinged disk drives the slider to move back and forth on the slide rail through the rocker arm. The slider drives the I-shaped magnet to move back and forth, so that the left heat regenerator moves back and forth in and out of the left magnet opening, and the right heat regenerator moves back and forth in and out of the right magnet opening, thereby realizing repeated periodic magnetization or demagnetization of the left and right heat regenerators.

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