A room temperature magnetic heat pump device coupled with a rotating heat pipe and a refrigeration and heating method

Abstract

The application relates to the technical field of magnetic refrigeration, and discloses a room-temperature magnetic heat pump device coupled with a rotating heat pipe and a refrigeration and heating method, which comprises a permanent magnet and a magnetic rotating heat pipe. The magnetic rotating heat pipe comprises a magnetic rotating heat pipe body, a conical heat exchange sheet, a magnetic working medium, a mesh screen and a fluid working medium. The heat exchange efficiency between the magnetic working medium and the fluid working medium is improved through phase change of the fluid working medium in the rotating heat pipe, and the working frequency is further improved. A multistage structure is adopted to widen the operation temperature span. On the basis, the centrifugal force component generated by the rotation of the rotating heat pipe is used to provide backflow acceleration, so that the device is free from the constraint of the gravity direction, and the device can be applied to multiple occasions. The backflow acceleration can be changed by adjusting the rotating speed of the heat pipe, so that the cold / heat load can be matched in real time. The rotating mode of the device is matched with the rotating mode of the nested Halbach permanent magnet, and no additional power component is needed.

Description

Technical Field

[0001] This invention relates to the field of magnetic refrigeration technology, and in particular to a room temperature magnetic heat pump device coupled with a rotating heat pipe and a method for cooling and heating. Background Technology

[0002] Room temperature magnetic refrigeration technology, with its advantages of being environmentally friendly, energy-efficient, and highly effective, is considered one of the most promising new refrigeration technologies to replace vapor compression refrigeration. With the development of room temperature magnetic refrigeration technology, several room temperature magnetic refrigeration prototypes have emerged. The vast majority of these prototypes are based on the principle of Active Magnetic Regenerator (AMR). However, limited by the convective heat transfer rate between the magnetic working fluid and the heat exchange fluid, AMR-based prototypes face a key technical bottleneck in their practical application: low operating frequency.

[0003] Existing technology discloses a room-temperature magnetic refrigeration device and method coupled with a gravity heat pipe. The device includes a gravity heat pipe body, internal heat exchange plates, magnetocaloric material, a barrier filter, a fluid working fluid, and a magnet assembly. The interior of the gravity heat pipe body is divided into multiple regions by multiple internal heat exchange plates, with the bottom end being the cold end for cooling the load and the top end being the hot end for releasing heat to the environment. This invention widens the temperature range and achieves low temperature by alternating demagnetization between odd- and even-numbered levels of magnetocaloric material or by progressive demagnetization of the magnetocaloric material from the hot end to the cold end. This invention places the magnetocaloric material directly inside the gravity heat pipe, improves the heat exchange efficiency between the magnetocaloric material and the fluid working fluid through a phase change in the fluid working fluid, and increases the operating frequency and cooling capacity of the magnetic refrigeration device. Utilizing the unidirectional heat transfer characteristics of the gravity heat pipe, the use of valve assemblies and fluid pumps is reduced, simplifying the pipeline structure and improving reliability. Multi-stage magnetic refrigeration is employed to widen the operating temperature range. This existing technology aims to enhance heat transfer between the magnetic working fluid and the heat exchange fluid, thereby increasing the operating frequency of the prototype. However, since the reflux force in the gravity heat pipe is provided by gravity, on the one hand, the room temperature magnetic refrigeration device can only be placed vertically, which limits its application. On the other hand, the reflux acceleration is constrained by the gravitational acceleration and is not adjustable, which makes it impossible for the reflux rate of the condensate to match the evaporation rate, and thus the output cooling / heating capacity cannot be matched with the cooling / heating load in real time. Summary of the Invention

[0004] One objective of this invention is to provide a room temperature magnetic heat pump device coupled with a rotating heat pipe, so as to effectively increase the operating frequency of the prototype and break free from the constraints of gravity, and continuously adjust the reflux acceleration to match the cold / heat load in real time. Another objective of this invention is to provide a cooling and heating method for the room temperature magnetic heat pump device coupled with a rotating heat pipe.

[0005] To achieve the above objectives, the present invention provides a room temperature magnetic heat pump device with a single-stage coupled rotating heat pipe, comprising a permanent magnet and a magnetic rotating heat pipe. The magnetic rotating heat pipe includes a magnetic rotating heat pipe body, a conical heat exchange plate, a magnetic working fluid, a mesh screen, and a fluid working fluid. The interior of the magnetic rotating heat pipe body is a frustoconical cavity. The rotation axis of the magnetic rotating heat pipe body is placed horizontally, and a magnetic rotating heat pipe heating zone and a magnetic rotating heat pipe cooling zone are sequentially arranged axially within its cavity. The magnetic rotating heat pipe heating zone and the magnetic rotating heat pipe cooling zone are connected by the conical heat exchange plate. The magnetic rotating heat pipe is separated into two sections. The hot zone of the magnetic rotating heat pipe is located on one side of the top of the frustum-shaped cavity. The magnetic working fluid is filled on one side of the conical heat exchange plate in the hot zone of the magnetic rotating heat pipe to form a magnetic working fluid region. The permanent magnet is fitted on the magnetic working fluid region of the magnetic rotating heat pipe. The screen is perpendicular to the rotation axis of the magnetic rotating heat pipe body and one side of the screen is in contact with the magnetic working fluid. The four sides of the screen are connected to the inner wall of the hot zone of the magnetic rotating heat pipe. The fluid working fluid is injected into the hot zone and the cooling zone of the magnetic rotating heat pipe after vacuuming.

[0006] Preferably, the inner surface of the hot zone of the magnetic rotating heat pipe is frustoconical, and the orientation of the top to the bottom of the frustum is the same as that of the frustum of the conical heat exchange plate.

[0007] Preferably, the end face of the magnetic rotating heat pipe that contacts the outside is the hot end of the magnetic rotating heat pipe, and the end face of the magnetic rotating heat pipe that contacts the outside is the cold end of the magnetic rotating heat pipe.

[0008] This invention also provides a room temperature magnetic heat pump device with a two-stage coupled rotating heat pipe. The permanent magnet includes a primary permanent magnet and a secondary permanent magnet. The conical heat exchange plate includes a primary conical heat exchange plate and a secondary conical heat exchange plate. The magnetic working fluid includes a primary magnetic working fluid and a secondary magnetic working fluid. The mesh includes a primary mesh and a secondary mesh. The cavity of the magnetic rotating heat pipe is divided into three regions along the axial direction by the secondary conical heat exchange plate and the primary conical heat exchange plate. From the top to the bottom of the cone, these are sequentially the magnetic rotating heat pipe heating zone, the magnetic rotating heat pipe overlapping zone, and the magnetic rotating heat pipe cooling zone. The primary magnetic working fluid fills the side of the magnetic rotating heat pipe overlapping zone near the primary conical heat exchange plate to form a primary magnetic working fluid region. The secondary magnetic working fluid fills the side of the magnetic rotating heat pipe heating zone near the secondary conical heat exchange plate to form a secondary magnetic working fluid region. The primary permanent magnet is fitted onto the... On the primary magnetic working fluid region of the magnetic rotating heat pipe, the primary magnetic working fluid is fixedly connected to the primary magnetic working fluid region, and the secondary magnetic working fluid is fixedly connected to the secondary magnetic working fluid region. The secondary permanent magnet is fitted onto the secondary magnetic working fluid region of the magnetic rotating heat pipe. The primary and secondary mesh screens are perpendicular to the rotation axis of the magnetic rotating heat pipe body. One side of the primary mesh screen is in contact with the primary magnetic working fluid, and the four sides of the primary mesh screen are connected to the inner wall surface of the overlapping region of the magnetic rotating heat pipe. One side of the secondary mesh screen is in contact with the secondary magnetic working fluid, and the four sides of the secondary mesh screen are connected to the inner wall surface of the heating region of the magnetic rotating heat pipe. The aperture of the small hole array on the primary and secondary mesh screens is smaller than the particle size of the primary and secondary magnetic working fluids, respectively. The fluid working fluid is injected into the heating region, overlapping region, and cooling region of the magnetic rotating heat pipe after vacuuming.

[0009] Preferably, the magnetic rotating heat pipe body is made of a material with low thermal conductivity, the hot end and cold end of the magnetic rotating heat pipe body are made of a material with high thermal conductivity, and the conical heat exchange plate is made of a material with high thermal conductivity.

[0010] Preferably, the magnetic working fluid is granular Gd, Gd-based alloy, or La-Fe-Si-based alloy, the mesh is woven from stainless steel or other materials, and the fluid working fluid is a low-boiling-point working fluid.

[0011] Preferably, the permanent magnet is a nested Halbach permanent magnet.

[0012] Preferably, the room temperature magnetic heat pump device with two-stage coupled rotating heat pipes can be extended to a room temperature magnetic heat pump device with N-stage coupled rotating heat pipes, wherein 2 <N<15。

[0013] The present invention also provides a cooling and heating method for a primary room temperature magnetic heat pump device, the cooling method being as follows:

[0014] The hot end of the magnetic rotating heat pipe is in contact with the environment, and the cold end is in contact with the load. The magnetic rotating heat pipe rotates around its axis at an angular velocity ω. The centrifugal force generated flows from the top to the bottom of the truncated cone, causing the liquid working fluid to flow unidirectionally down the truncated cone, thus achieving a thermal switching function. The permanent magnet magnetizes the working fluid, raising its temperature. The cooling zone of the magnetic rotating heat pipe stops working. The liquid working fluid in the heating zone absorbs the heat generated by the magnetic working fluid and turns into vapor. The vapor diffuses to the hot end of the magnetic rotating heat pipe, where it releases heat to the environment and condenses into liquid. Under the influence of the centrifugal force, the liquid flows back down the truncated cone to the magnetic working fluid zone. The magnetic working fluid circulates sequentially, rapidly transporting the heat generated by the magnetic working fluid to the environment, causing the magnetic working fluid to return to its initial temperature. The magnetic working fluid is then demagnetized, its temperature decreases, and the hot zone of the magnetic rotating heat pipe stops working. The liquid working fluid at the cold end of the cooling zone of the magnetic rotating heat pipe absorbs the heat from the cold end load and turns into vapor. The vapor diffuses to the conical heat exchange plate and is condensed into liquid by the lower-temperature magnetic working fluid through the conical heat exchange plate. Under the action of centrifugal force, the liquid flows back down the cone to the cold end. The working fluid circulates sequentially, continuously outputting cooling capacity to the cold end. The first-stage room temperature magnetic heat pump device repeats the above process, continuously delivering cooling capacity to the cold end, thereby achieving continuous cooling.

[0015] The heating method is as follows:

[0016] The hot end of the magnetic rotating heat pipe is in contact with the load, and the cold end is in contact with the environment. The magnetic rotating heat pipe rotates around its axis at an angular velocity ω, and the resulting centrifugal force component runs along the direction from the top to the bottom of the truncated cone, causing the liquid working fluid to flow unidirectionally down the slope of the truncated cone, thus achieving a thermal switching function. The permanent magnet magnetizes the working fluid, raising its temperature. The cooling zone of the magnetic rotating heat pipe stops working. The liquid working fluid in the heating zone of the magnetic rotating heat pipe absorbs the heat generated by the magnetic working fluid and turns into vapor. The vapor diffuses to the hot end of the magnetic rotating heat pipe, where it releases heat to the load and condenses into liquid. Under the action of the centrifugal force component, the liquid flows back down the slope of the truncated cone to the working fluid. In the cooling zone, the working fluid circulates sequentially, continuously outputting heat to the hot end. The magnetic working fluid is demagnetized, its temperature decreases, and the magnetic rotating heat pipe in the cooling zone stops working. The liquid working fluid at the cold end of the magnetic rotating heat pipe absorbs heat from the cold end environment and turns into vapor. The vapor diffuses to the conical heat exchange plate and is condensed into liquid by the lower-temperature magnetic working fluid. Under the action of centrifugal force, the liquid flows back to the cold end along the truncated cone. The working fluid circulates sequentially, continuously absorbing heat from the cold end environment, thus bringing the magnetic working fluid back to its initial temperature. The first-stage room temperature magnetic heat pump device repeats the above process, continuously delivering heat to the hot end, thereby achieving continuous heating.

[0017] The present invention also provides a cooling and heating method for a two-stage room temperature magnetic heat pump device, the cooling method being as follows:

[0018] The hot end of the magnetic rotating heat pipe is in contact with the environment, and the cold end is in contact with the load. The magnetic rotating heat pipe rotates around its axis at an angular velocity ω. The centrifugal force generated flows from the top to the bottom of the truncated cone, causing the liquid working fluid to flow unidirectionally down the truncated cone, thus acting as a thermal switch. The primary permanent magnet magnetizes the primary magnetic working fluid, increasing its temperature. Simultaneously, the secondary magnetic working fluid is demagnetized, decreasing its temperature. The cooling and heating zones of the magnetic rotating heat pipe cease operation. The liquid working fluid in the cascaded zone of the magnetic rotating heat pipe absorbs the heat generated by the primary magnetic working fluid and turns into vapor. The vapor diffuses to the secondary conical heat exchange plate, where it is condensed into liquid by the secondary magnetic working fluid. Under the influence of the centrifugal force, the liquid flows back down the truncated cone to the primary magnetic working fluid zone. This cycle of fluid circulation rapidly transports the heat generated by the primary magnetic working fluid to the low-temperature secondary magnetic working fluid. The process involves several steps: first, the temperature of the primary magnetic working fluid is lowered; second, the temperature of the primary magnetic working fluid is demagnetized, further reducing its temperature and widening the temperature range; third, the secondary permanent magnet magnetizes the secondary magnetic working fluid, increasing its temperature; fourth, the cascaded region of the magnetic rotating heat pipe stops working; fifth, the liquid working fluid in the cooling and heating regions of the magnetic rotating heat pipe absorbs heat from the cold end load and the secondary magnetic working fluid, turning into vapor; sixth, the vapor diffuses to the primary conical heat exchange plate and the hot end, respectively, and is condensed into liquid by the lower-temperature primary magnetic working fluid and the environment; seventh, under the influence of centrifugal force, the liquid flows back down the cone to the cold end and the secondary magnetic working fluid region, and the working fluid circulates sequentially, continuously outputting cooling capacity to the cold end and returning the secondary magnetic working fluid to its initial temperature; and eluting the secondary room temperature magnetic heat pump device according to the above process, continuously delivering cooling capacity to the cold end, thereby achieving continuous cooling.

[0019] The heating method is as follows:

[0020] The hot end of the magnetic rotating heat pipe is in contact with the load, and the cold end is in contact with the environment. The magnetic rotating heat pipe rotates around its axis at an angular velocity ω. The centrifugal force generated flows from the top to the bottom of the truncated cone, causing the liquid working fluid to flow unidirectionally down the truncated cone, thus acting as a thermal switch. The primary permanent magnet magnetizes the primary magnetic working fluid, raising its temperature. The secondary magnetic working fluid is demagnetized, lowering its temperature. The cooling and heating zones of the magnetic rotating heat pipe cease operation. The liquid working fluid in the cascaded zone of the magnetic rotating heat pipe absorbs the heat generated by the primary magnetic working fluid and turns into vapor. The vapor diffuses to the secondary conical heat exchange plate, where it is condensed into liquid by the secondary magnetic working fluid. Under the influence of the centrifugal force, the liquid flows back down the truncated cone to the primary magnetic working fluid zone. The working fluid circulates sequentially, rapidly transporting the heat generated by the primary magnetic working fluid to a lower temperature. The secondary magnetic working fluid is used to raise the temperature of the secondary magnetic working fluid, while the primary magnetic working fluid is demagnetized, causing its temperature to decrease. The secondary permanent magnet then magnetizes the secondary magnetic working fluid, further raising its temperature and widening the temperature range. The cascaded region of the magnetic rotating heat pipe stops working. The liquid fluid working fluid in the cooling region and heating region of the magnetic rotating heat pipe absorbs heat from the cold end environment and the secondary magnetic working fluid, turning into vapor. The vapor diffuses to the first-stage conical heat exchange plate and the hot end, respectively. Through the first-stage conical heat exchange plate and the hot end, it is condensed into liquid by the lower-temperature primary magnetic working fluid and the load. Under the action of centrifugal force, the liquid flows back down the truncated cone to the cold end and the secondary magnetic working fluid region. The fluid working fluid circulates sequentially, continuously outputting heat to the hot end. The secondary room temperature magnetic heat pump device repeats the above process, continuously delivering heat to the hot end, thereby continuously achieving heating.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] By rotating the heat pipe and causing phase change of the working fluid, the heat exchange efficiency between the magnetic working fluid and the working fluid is improved, thereby increasing the operating frequency. The multi-stage structure broadens the operating temperature range. Furthermore, the centrifugal force generated by the rotation of the heat pipe provides reflux acceleration, freeing the device from the constraints of gravity and enabling applications in various situations. The reflux acceleration can be changed by adjusting the rotation speed of the heat pipe to match the cold / heat load in real time. Moreover, it is compatible with the rotation mode of the nested Halbach permanent magnet, eliminating the need for additional power components. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a primary room temperature magnetic heat pump device according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the operating principle of a primary room temperature magnetic heat pump device according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of a two-stage room temperature magnetic heat pump device according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the operating principle of a two-stage room temperature magnetic heat pump device according to an embodiment of the present invention.

[0027] In the diagram, 1 is a permanent magnet; 101 is a primary permanent magnet; 102 is a secondary permanent magnet; 2 is a magnetic rotating heat pipe; 3 is the tube body of the magnetic rotating heat pipe; 4 is a conical heat exchange fin; 401 is a primary conical heat exchange fin; 402 is a secondary conical heat exchange fin; 5 is a magnetic working fluid; 501 is a primary magnetic working fluid; 502 is a secondary magnetic working fluid; 6 is a mesh screen; 601 is a primary mesh screen; 602 is a secondary mesh screen; 7 is the hot zone of the magnetic rotating heat pipe; 8 is the cold zone of the magnetic rotating heat pipe; 9 is the hot end; 10 is the cold end; and 11 is the overlapping zone of the magnetic rotating heat pipe. Detailed Implementation

[0028] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0029] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0032] Example 1

[0033] like Figure 1As shown, a preferred embodiment of the present invention provides a room temperature magnetic heat pump device with a single-stage coupled rotating heat pipe, comprising a permanent magnet 1 and a magnetic rotating heat pipe 2. The magnetic rotating heat pipe 2 includes a magnetic rotating heat pipe body 3, a conical heat exchange plate 4, a magnetic working fluid 5, a mesh screen 6, and a fluid working fluid. The interior of the magnetic rotating heat pipe body 3 is a frustoconical cavity. The rotation axis of the magnetic rotating heat pipe body 3 is placed horizontally, and a magnetic rotating heat pipe heating zone 7 and a magnetic rotating heat pipe cooling zone 8 are sequentially arranged axially within its cavity. The magnetic rotating heat pipe heating zone 7 and the magnetic rotating heat pipe cooling zone 8 are separated by the conical heat exchange plate 4. The magnetic rotating heat pipe heating zone 7 is located on the side near the top of the frustoconical cavity. The magnetic working fluid... 5. A magnetic working medium region is formed on one side of the conical heat exchange plate 4 in the hot zone 7 of the magnetic rotating heat pipe 2. The permanent magnet 1 is fitted on the magnetic working medium region of the magnetic rotating heat pipe 2. The screen 6 is perpendicular to the rotation axis of the magnetic rotating heat pipe body 3 and one side of the screen is in contact with the magnetic working medium 5. The four sides of the screen are connected to the inner wall of the hot zone 7 of the magnetic rotating heat pipe 2. The aperture of the small hole array on the screen 6 is smaller than the particle size of the magnetic working medium 5, so that the fluid working medium can pass smoothly through the screen 6 and exchange heat with the magnetic working medium 5. The fluid working medium is injected into the hot zone 7 and the cooling zone 8 of the magnetic rotating heat pipe after vacuuming. The Curie temperature of the magnetic working medium 5 matches the working temperature of the hot zone 7 of the magnetic rotating heat pipe 2.

[0034] The inner surface of the hot zone 7 of the magnetic rotating heat pipe is frustoconical, and the orientation of the top to the bottom of the frustum is the same as that of the frustum of the conical heat exchange plate 4.

[0035] The end face of the magnetic rotating heat pipe 2 that is in contact with the outside is the hot end 9 of the magnetic rotating heat pipe 2, and the end face of the magnetic rotating heat pipe 2 that is in contact with the outside is the cold end 10 of the magnetic rotating heat pipe 2.

[0036] Example 2

[0037] like Figure 3As shown, the present invention also provides a room temperature magnetic heat pump device with a two-stage coupled rotating heat pipe. The permanent magnet 1 includes a primary permanent magnet 101 and a secondary permanent magnet 102. The conical heat exchange plate 4 includes a primary conical heat exchange plate 401 and a secondary conical heat exchange plate 402. The magnetic working fluid 5 includes a primary magnetic working fluid 501 and a secondary magnetic working fluid 502. The mesh screen 6 includes a primary mesh screen 601 and a secondary mesh screen 602. The cavity of the magnetic rotating heat pipe body 3 is divided into three regions along the axial direction by the secondary conical heat exchange plate 402 and the primary conical heat exchange plate 401. Along the direction from top to bottom of the truncated cone are, in sequence, the magnetic rotating heat pipe hot zone 7, the magnetic rotating heat pipe cascade zone 11, and the magnetic rotating heat pipe cooling zone 8. A primary magnetic working fluid 501 is filled within the magnetic rotating heat pipe cascade zone 11, near the primary conical heat exchanger 401, forming a primary magnetic working fluid region. The Curie temperature of the primary magnetic working fluid 501 matches the operating temperature of the magnetic rotating heat pipe cascade zone 11. A secondary magnetic working fluid 502 is filled within the magnetic rotating heat pipe hot zone 7, near the secondary conical heat exchanger 402, forming a secondary magnetic working fluid region. The Curie temperature of the working fluid 502 matches the operating temperature of the hot zone 7 of the magnetic rotating heat pipe 2. A primary permanent magnet 101 is mounted on the primary magnetic working fluid zone of the magnetic rotating heat pipe 2, and the primary magnetic working fluid 501 is fixedly connected to the primary magnetic working fluid zone. A secondary magnetic working fluid 502 is fixedly connected to the secondary magnetic working fluid zone, and the secondary permanent magnet 102 is mounted on the secondary magnetic working fluid zone of the magnetic rotating heat pipe 2. The primary and secondary mesh screens 601 are perpendicular to the rotation axis of the magnetic rotating heat pipe body 3, and one side of the primary mesh screen 601 is in contact with the primary magnetic working fluid 501. The primary mesh screen 601 is in contact with the inner wall of the magnetic rotating heat pipe cascade region 11, and the secondary mesh screen 602 is in contact with the secondary magnetic working fluid 502 on one side. The secondary mesh screen 602 is also in contact with the inner wall of the magnetic rotating heat pipe cooling zone 7. The aperture of the small hole array on the primary mesh screen 601 and the secondary mesh screen 602 is smaller than the particle size of the primary magnetic working fluid 501 and the secondary magnetic working fluid 502, respectively. The fluid working fluid is injected into the magnetic rotating heat pipe cooling zone 7, the magnetic rotating heat pipe cascade region 11, and the magnetic rotating heat pipe cooling zone 8 after vacuuming.

[0038] The magnetic rotating heat pipe body 3 is made of a material with low thermal conductivity, such as engineering plastics, while the hot end 9 and cold end 10 of the magnetic rotating heat pipe body 3 are made of a material with high thermal conductivity, such as copper; the conical heat exchange plate 4 is made of a material with high thermal conductivity, such as copper.

[0039] The magnetic working medium 5 is granular Gd, Gd-based alloy or La-Fe-Si-based alloy, the mesh screen 6 is woven wire mesh made of stainless steel, etc., and the fluid working medium is a low boiling point working medium, such as methanol, ethanol, acetone, electronic fluorinated liquid, refrigerant, etc.

[0040] Permanent magnet 1 is a nested Halbach permanent magnet.

[0041] The room temperature magnetic heat pump device with two-stage coupled rotating heat pipes can be extended to a room temperature magnetic heat pump device with N-stage coupled rotating heat pipes, where 2 <N<15。

[0042] Example 3

[0043] like Figure 2 As shown, the present invention also provides a cooling and heating method for a primary room temperature magnetic heat pump device, the cooling method being as follows:

[0044] The hot end 9 of the magnetic rotating heat pipe 2 is in contact with the environment, and the cold end 10 is in contact with the load. The magnetic rotating heat pipe 2 rotates around its axis at an angular velocity ω. The centrifugal force generated is directed from the top to the bottom of the truncated cone, causing the liquid working fluid to flow unidirectionally down the slope of the truncated cone, thus achieving a thermal switching function. The permanent magnet 1 magnetizes the working fluid 5, causing its temperature to rise. The cooling zone 8 of the magnetic rotating heat pipe stops working. The liquid working fluid in the heating zone 7 of the magnetic rotating heat pipe absorbs the heat generated by the working fluid 5 and turns into vapor. The vapor diffuses to the hot end 9 of the magnetic rotating heat pipe 2, where it releases heat to the environment and condenses into liquid. Under the influence of the centrifugal force, the liquid flows back down the slope of the truncated cone to the magnetic working fluid zone. The working fluid flows sequentially... The circulation rapidly transfers the heat generated by the magnetic working medium 5 to the environment, causing the magnetic working medium 5 to return to its initial temperature. The magnetic working medium 5 is then demagnetized, its temperature decreases, and the hot zone 7 of the magnetic rotating heat pipe stops working. The liquid working medium at the cold end 10 of the magnetic rotating heat pipe refrigeration zone 8 absorbs the heat from the load at the cold end 10 and turns into vapor. The vapor diffuses to the conical heat exchange plate 4 and is condensed into liquid by the lower-temperature magnetic working medium 5 through the conical heat exchange plate 4. Under the action of centrifugal force, the liquid flows back down the cone to the cold end 10. The working medium circulates sequentially, continuously outputting cooling capacity to the cold end 10. The first-stage room temperature magnetic heat pump device repeats the above process, continuously delivering cooling capacity to the cold end 10, thereby achieving continuous cooling.

[0045] The heating method is as follows:

[0046] The hot end 9 of the magnetic rotating heat pipe 2 is in contact with the load, and the cold end 10 is in contact with the environment. The magnetic rotating heat pipe 2 rotates around its axis at an angular velocity ω. The centrifugal force generated is directed from the top to the bottom of the truncated cone, causing the liquid working fluid to flow unidirectionally down the truncated cone, thus achieving a thermal switching function. The permanent magnet 1 magnetizes the working fluid 5, raising its temperature. The cooling zone 8 of the magnetic rotating heat pipe stops working. The liquid working fluid in the heating zone 7 of the magnetic rotating heat pipe absorbs the heat generated by the working fluid 5 and turns into vapor. The vapor diffuses to the hot end 9 of the magnetic rotating heat pipe 2, where it releases heat to the load and condenses into liquid. Under the action of the centrifugal force, the liquid flows back down the truncated cone to the magnetic working fluid zone. The working fluid circulates sequentially, continuously outputting heat to the hot end 9. The magnetic working fluid 5 is demagnetized, and its temperature decreases. The hot zone 7 of the magnetic rotating heat pipe stops working. The liquid working fluid at the cold end 10 of the magnetic rotating heat pipe refrigeration zone 8 absorbs heat from the environment of the cold end 10 and turns into steam. The steam diffuses to the conical heat exchange plate 4 and is condensed into liquid by the lower-temperature magnetic working fluid 5 through the conical heat exchange plate 4. Under the action of centrifugal force, the liquid flows back to the cold end along the downward slope of the cone. The working fluid circulates sequentially, continuously absorbing heat from the environment of the cold end 10, thereby bringing the magnetic working fluid 5 back to its initial temperature. The first-stage room temperature magnetic heat pump device repeats the above process, continuously delivering heat to the hot end 9, thereby achieving continuous heating.

[0047] Example 4

[0048] like Figure 4 As shown, the present invention also provides a cooling and heating method for a two-stage room temperature magnetic heat pump device, the cooling method being as follows:

[0049] The hot end 9 of the magnetic rotating heat pipe 2 is in contact with the environment, and the cold end 10 is in contact with the load. The magnetic rotating heat pipe 2 rotates around its axis at an angular velocity ω. The resulting centrifugal force component runs along the direction from the top to the bottom of the truncated cone, causing the liquid working fluid to flow unidirectionally down the slope of the truncated cone, thus acting as a thermal switch. The primary permanent magnet 101 magnetizes the primary magnetic working fluid 501, causing its temperature to rise. Simultaneously, the secondary magnetic working fluid 502 is demagnetized, causing its temperature to drop. The cooling zone 8 of the magnetic rotating heat pipe and the magnetic rotating... When the heat transfer control zone 7 stops working, the liquid working fluid in the magnetic rotating heat pipe cascade zone 11 absorbs the heat generated by the primary magnetic working fluid 501 and turns into steam. The steam diffuses to the secondary conical heat exchange plate 402, where it is condensed into liquid by the secondary magnetic working fluid 502. Under the action of centrifugal force, the liquid flows back down the cone to the primary magnetic working fluid zone. The working fluid circulates sequentially, rapidly transporting the heat generated by the primary magnetic working fluid 501 to the low-temperature secondary magnetic working fluid 502, thus reducing its temperature. The temperature of the lower-level magnetic working fluid 501 decreases, the primary magnetic working fluid 501 is demagnetized, and the temperature of the primary magnetic working fluid 501 decreases further, thereby widening the temperature range. The secondary permanent magnet 102 magnetizes the secondary magnetic working fluid 502, and the temperature of the secondary magnetic working fluid 502 increases. The cascade region 11 of the magnetic rotating heat pipe stops working. The liquid fluid working fluids in the cooling region 8 and the heating region 7 of the magnetic rotating heat pipe absorb the heat from the cold end 10 load and the secondary magnetic working fluid 502, respectively, and turn into steam. The steam diffuses to the primary conical heat exchange plate. 401 and hot end 9, through the first-stage conical heat exchange plate 401 and hot end 9, are respectively condensed into liquid by the lower-temperature first-stage magnetic working fluid 501 and the environment. Under the action of centrifugal force, the liquid flows back to the cold end 10 and the second-stage magnetic working fluid region along the downward slope of the cone. The working fluid circulates in sequence, continuously outputting cooling capacity to the cold end 10 and returning the second-stage magnetic working fluid 502 to its initial temperature. The second-stage room temperature magnetic heat pump device repeats the above process, continuously delivering cooling capacity to the cold end 10, thereby continuously achieving refrigeration.

[0050] The heating method is as follows:

[0051] The hot end 9 of the magnetic rotating heat pipe 2 is in contact with the load, and the cold end 10 is in contact with the environment. The magnetic rotating heat pipe 2 rotates around its axis at an angular velocity ω. The resulting centrifugal force component runs along the direction from the top to the bottom of the truncated cone, causing the liquid working fluid to flow unidirectionally down the slope of the truncated cone, thus acting as a thermal switch. The primary permanent magnet 101 magnetizes the primary magnetic working fluid 501, causing its temperature to rise. The secondary magnetic working fluid 502 is demagnetized, causing its temperature to drop. The cooling zone 8 of the magnetic rotating heat pipe... When the magnetic rotating heat pipe's hot zone 7 stops working, the liquid working fluid in the magnetic rotating heat pipe's cascade zone 11 absorbs the heat generated by the primary magnetic working fluid 501 and turns into vapor. The vapor diffuses to the secondary conical heat exchange plate 402, where it is condensed into liquid by the secondary magnetic working fluid 502. Under the action of centrifugal force, the liquid flows back down the cone to the primary magnetic working fluid zone. The working fluid circulates sequentially, rapidly transporting the heat generated by the primary magnetic working fluid 501 to the low-temperature secondary zone. The primary magnetic working fluid 502 raises the temperature of the secondary magnetic working fluid 502, demagnetizing the primary magnetic working fluid 501 and lowering its temperature. The secondary permanent magnet 102 then magnetizes the secondary magnetic working fluid 502, further increasing its temperature and widening the temperature range. The cascade region 11 of the magnetic rotating heat pipe stops working. The liquid working fluids in the cooling region 8 and heating region 7 of the magnetic rotating heat pipe absorb heat from the environment at the cold end 10 and the secondary magnetic working fluid 502, respectively, and turn into vapor. Steam diffuses to the first-stage conical heat exchange plate 401 and the hot end 9, respectively. Through the first-stage conical heat exchange plate 401 and the hot end 9, it is condensed into liquid by the first-stage magnetic working fluid 501 and the load, respectively, which have a lower temperature. Under the action of centrifugal force, the liquid flows back down the cone to the cold end 10 and the second-stage magnetic working fluid region. The working fluid circulates in sequence, continuously outputting heat to the hot end 9. The second-stage room temperature magnetic heat pump device repeats the above process, continuously delivering heat to the hot end 9, thereby continuously achieving heating.

[0052] In summary, this invention provides a room-temperature magnetic heat pump device and a cooling / heating method with a coupled rotating heat pipe. It improves the heat exchange efficiency between the magnetic working fluid and the fluid working fluid through a phase change in the working fluid within the rotating heat pipe, thereby increasing the operating frequency. It employs a multi-stage structure to broaden the operating temperature range. Furthermore, it utilizes the centrifugal force generated by the rotation of the rotating heat pipe to provide reflux acceleration, freeing the device from the constraints of gravity and enabling applications in various scenarios. The reflux acceleration can be changed by adjusting the heat pipe rotation speed to match the cooling / heating load in real time. Moreover, it is compatible with the rotation mode of nested Halbach permanent magnets, eliminating the need for additional power components.

[0053] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A room temperature magnetic heat pump device with a single-stage coupled rotating heat pipe, characterized in that, The system includes a permanent magnet (1) and a magnetic rotating heat pipe (2). The magnetic rotating heat pipe (2) includes a magnetic rotating heat pipe body (3), a conical heat exchange plate (4), a magnetic working fluid (5), a mesh screen (6), and a fluid working fluid. The interior of the magnetic rotating heat pipe body (3) is a frustoconical cavity. The rotation axis of the magnetic rotating heat pipe body (3) is placed horizontally, and the cavity is axially arranged with a magnetic rotating heat pipe heating zone (7) and a magnetic rotating heat pipe cooling zone (8). The magnetic rotating heat pipe heating zone (7) and the magnetic rotating heat pipe cooling zone (8) are separated by the conical heat exchange plate (4). The zone (7) is located on one side of the top of the frustum-shaped cavity. The magnetic working fluid (5) is filled in the magnetic rotating heat pipe heat zone (7) and one side of the conical heat exchange plate (4) forms a magnetic working fluid zone. The permanent magnet (1) is fitted on the magnetic working fluid zone of the magnetic rotating heat pipe (2). The mesh screen (6) is perpendicular to the rotation axis of the magnetic rotating heat pipe body (3) and one side of the mesh screen is in contact with the magnetic working fluid (5). The four sides of the mesh screen are connected to the inner wall of the magnetic rotating heat pipe heat zone (7). The fluid working fluid is injected into the magnetic rotating heat pipe heat zone (7) and the magnetic rotating heat pipe cooling zone (8) after vacuuming.

2. The room temperature magnetic heat pump device with a single-stage coupled rotating heat pipe according to claim 1, characterized in that, The inner surface of the magnetic rotating heat pipe heat zone (7) is frustum-shaped, and the orientation of the top to the bottom of the frustum is the same as that of the frustum of the conical heat exchange plate (4).

3. The room temperature magnetic heat pump device with a single-stage coupled rotating heat pipe according to claim 2, characterized in that, The end face of the hot zone (7) of the magnetic rotating heat pipe that contacts the outside is the hot end (9) of the magnetic rotating heat pipe (2), and the end face of the cold zone (8) of the magnetic rotating heat pipe that contacts the outside is the cold end (10) of the magnetic rotating heat pipe (2).

4. A room temperature magnetic heat pump device based on a two-stage coupled rotating heat pipe of a room temperature magnetic heat pump device with a first-stage coupled rotating heat pipe as described in claim 3, characterized in that, The permanent magnet (1) includes a primary permanent magnet (101) and a secondary permanent magnet (102), the conical heat exchange plate (4) includes a primary conical heat exchange plate (401) and a secondary conical heat exchange plate (402), the magnetic working fluid (5) includes a primary magnetic working fluid (501) and a secondary magnetic working fluid (502), the mesh screen (6) includes a primary mesh screen (601) and a secondary mesh screen (602), the cavity of the magnetic rotating heat pipe body (3) is divided into three regions along the axial direction by the secondary conical heat exchange plate (402) and the primary conical heat exchange plate (401), along the top of the cone. From top to bottom, the magnetic rotating heat pipe consists of a hot zone (7), a cascaded zone (11), and a cooling zone (8). The primary magnetic working fluid (501) fills the cascaded zone (11) near the primary conical heat exchange plate (401) to form a primary magnetic working fluid zone. The secondary magnetic working fluid (502) fills the hot zone (7) near the secondary conical heat exchange plate (402) to form a secondary magnetic working fluid zone. The primary permanent magnet (101) is mounted on one side of the magnetic rotating heat pipe (2). On the primary magnetic working material region, the primary magnetic working material (501) is fixedly connected to the primary magnetic working material region, and the secondary magnetic working material (502) is fixedly connected to the secondary magnetic working material region. The secondary permanent magnet (102) is fitted onto the secondary magnetic working material region of the magnetic rotating heat pipe (2). The primary mesh screen (601) and the secondary mesh screen (602) are perpendicular to the rotation axis of the magnetic rotating heat pipe body (3). One side of the primary mesh screen (601) is in contact with the primary magnetic working material (501), and the periphery of the primary mesh screen (601) overlaps with the magnetic rotating heat pipe. The inner wall of the zone (11) is connected, one side of the secondary mesh screen (602) is in contact with the secondary magnetic working fluid (502), and the periphery of the secondary mesh screen (602) is connected to the inner wall of the magnetic rotating heat pipe heat control zone (7). The aperture of the small hole array on the primary mesh screen (601) and the secondary mesh screen (602) is smaller than the particle size of the primary magnetic working fluid (501) and the secondary magnetic working fluid (502), respectively. The fluid working fluid is injected into the magnetic rotating heat pipe heat control zone (7), the magnetic rotating heat pipe superimposed zone (11) and the magnetic rotating heat pipe cooling zone (8) after vacuuming.

5. The room temperature magnetic heat pump device with a two-stage coupled rotating heat pipe according to claim 4, characterized in that, The magnetic rotating heat pipe body (3) is made of a material with low thermal conductivity, the hot end (9) and cold end (10) of the magnetic rotating heat pipe body (3) are made of a material with high thermal conductivity, and the conical heat exchange plate (4) is made of a material with high thermal conductivity.

6. The room temperature magnetic heat pump device with a two-stage coupled rotating heat pipe according to claim 4, characterized in that, The magnetic working material (5) is granular Gd, Gd-based alloy or La Fe The Si-based alloy, the mesh screen (6) is a woven wire mesh made of stainless steel, etc., and the fluid working medium is a low-boiling-point working medium.

7. The room temperature magnetic heat pump device with a two-stage coupled rotating heat pipe according to claim 4, characterized in that, The permanent magnet (1) is a nested Halbach permanent magnet.

8. The room temperature magnetic heat pump device with a two-stage coupled rotating heat pipe according to claim 4, characterized in that, The room temperature magnetic heat pump device with two-stage coupled rotating heat pipes can be extended to a room temperature magnetic heat pump device with N-stage coupled rotating heat pipes, wherein 2 <N<15。 9. A cooling and heating method based on the primary room temperature magnetic heat pump device according to claim 3, characterized in that, The refrigeration method is as follows: The hot end (9) of the magnetic rotating heat pipe (2) is in contact with the environment, and the cold end (10) is in contact with the load. The magnetic rotating heat pipe (2) rotates around the rotation axis at an angular velocity ω. The centrifugal force generated is along the direction from the top to the bottom of the cone, so that the liquid working fluid can only flow unidirectionally down the cone, realizing the thermal switching function. The permanent magnet (1) magnetizes the magnetic working fluid (5), and the temperature of the magnetic working fluid (5) rises. The cooling zone (8) of the magnetic rotating heat pipe stops working. The liquid working fluid in the heating zone (7) of the magnetic rotating heat pipe absorbs the heat generated by the magnetic working fluid (5) and turns into steam. The steam diffuses to the hot end (9) of the magnetic rotating heat pipe (2). After releasing heat to the environment at the hot end (9), it condenses into liquid. Under the action of the centrifugal force, the liquid flows back down the cone to the magnetic working fluid zone. The working fluid flows sequentially. The heat generated by the magnetic working medium (5) is rapidly transported to the environment, causing the magnetic working medium (5) to return to its initial temperature. The magnetic working medium (5) is demagnetized, and its temperature decreases. The magnetic rotating heat pipe cooling zone (7) stops working. The liquid fluid working medium at the cold end (10) of the magnetic rotating heat pipe cooling zone (8) absorbs the heat from the load of the cold end (10) and turns into steam. The steam diffuses to the conical heat exchange plate (4) and is condensed into liquid by the lower-temperature magnetic working medium (5) through the conical heat exchange plate (4). Under the action of centrifugal force, the liquid flows back down the cone to the cold end (10). The fluid working medium circulates in sequence, continuously outputting cooling capacity to the cold end (10). The first-stage room temperature magnetic heat pump device repeats the above process, continuously delivering cooling capacity to the cold end (10), thereby achieving continuous cooling. The heating method is as follows: The hot end (9) of the magnetic rotating heat pipe (2) is in contact with the load, and the cold end (10) is in contact with the environment. The magnetic rotating heat pipe (2) rotates around the rotating axis at an angular velocity ω. The centrifugal force generated is along the direction from the top to the bottom of the cone, so that the liquid working fluid can only flow unidirectionally down the cone, realizing the thermal switching function. The permanent magnet (1) magnetizes the magnetic working fluid (5), and the temperature of the magnetic working fluid (5) rises. The cooling zone (8) of the magnetic rotating heat pipe stops working. The liquid working fluid in the heating zone (7) of the magnetic rotating heat pipe absorbs the heat generated by the magnetic working fluid (5) and turns into steam. The steam diffuses to the hot end (9) of the magnetic rotating heat pipe (2). After releasing heat to the load at the hot end (9), it condenses into liquid. Under the action of the centrifugal force, the liquid flows back down the cone to the magnetic working fluid zone. The working fluid circulates sequentially, continuously outputting heat to the hot end (9). The magnetic working fluid (5) is demagnetized, and the temperature of the magnetic working fluid (5) decreases. The hot zone (7) of the magnetic rotating heat pipe stops working. The liquid working fluid at the cold end (10) of the cooling zone (8) of the magnetic rotating heat pipe absorbs heat from the environment of the cold end (10) and turns into steam. The steam diffuses to the conical heat exchange plate (4) and is condensed into liquid by the lower temperature magnetic working fluid (5) through the conical heat exchange plate (4). Under the action of centrifugal force, the liquid flows back to the cold end along the downhill slope of the cone. The working fluid circulates sequentially, continuously absorbing heat from the environment of the cold end (10), thereby causing the magnetic working fluid (5) to return to the initial temperature. The first-stage room temperature magnetic heat pump device repeats the above process, continuously delivering heat to the hot end (9), thereby achieving continuous heating.

10. A cooling and heating method based on the two-stage room temperature magnetic heat pump device according to claim 4, characterized in that, The refrigeration method is as follows: The hot end (9) of the magnetic rotating heat pipe (2) is in contact with the environment, and the cold end (10) is in contact with the load. The magnetic rotating heat pipe (2) rotates around the rotation axis at an angular velocity ω. The centrifugal force generated is along the direction from the top to the bottom of the cone, so that the liquid working fluid can only flow unidirectionally down the cone, which acts as a thermal switch. The primary permanent magnet (101) magnetizes the primary magnetic working fluid (501), and the temperature of the primary magnetic working fluid (501) rises. At the same time, the secondary magnetic working fluid (502) is demagnetized, and the temperature of the secondary magnetic working fluid (502) decreases. The cooling zone of the magnetic rotating heat pipe ( 8) When the magnetic rotating heat pipe heat exchanger (7) stops working, the liquid working fluid in the magnetic rotating heat pipe cascade region (11) absorbs the heat generated by the primary magnetic working fluid (501) and turns into steam. The steam diffuses to the secondary conical heat exchange plate (402) and is condensed into liquid by the secondary magnetic working fluid (502) on the secondary conical heat exchange plate (402). Under the action of the centrifugal force, the liquid flows back down the cone to the primary magnetic working fluid region. The working fluid circulates in sequence, rapidly transporting the heat generated by the primary magnetic working fluid (501) to the low-temperature secondary magnetic working fluid (502), reducing the heat generated by the primary magnetic working fluid (501). The temperature of the primary magnetic working fluid (501) is reduced, and the temperature of the primary magnetic working fluid (501) is further reduced, thereby widening the temperature range. The secondary permanent magnet (102) magnetizes the secondary magnetic working fluid (502), and the temperature of the secondary magnetic working fluid (502) rises. The magnetic rotating heat pipe cascade region (11) stops working. The liquid fluid working fluids in the magnetic rotating heat pipe cooling region (8) and the magnetic rotating heat pipe heating region (7) respectively absorb the heat from the cold end (10) load and the secondary magnetic working fluid (502) and turn into steam. The steam diffuses to the... The primary conical heat exchange plate (401) and the hot end (9) are condensed into liquid by the primary magnetic working fluid (501) and the environment at a lower temperature, respectively. Under the action of centrifugal force, the liquid flows back down the cone to the cold end (10) and the secondary magnetic working fluid area. The fluid working fluid circulates in sequence, continuously outputting cooling capacity to the cold end (10) and returning the secondary magnetic working fluid (502) to the initial temperature. The secondary room temperature magnetic heat pump device repeats the above process, continuously delivering cooling capacity to the cold end (10), thereby continuously achieving refrigeration. The heating method is as follows: The hot end (9) of the magnetic rotating heat pipe (2) is in contact with the load, and the cold end (10) is in contact with the environment. The magnetic rotating heat pipe (2) rotates around the rotation axis at an angular velocity ω. The centrifugal force generated is along the direction from the top to the bottom of the truncated cone, so that the liquid working fluid can only flow unidirectionally down the truncated cone, which acts as a thermal switch. The primary permanent magnet (101) magnetizes the primary magnetic working fluid (501), and the temperature of the primary magnetic working fluid (501) rises. The secondary magnetic working fluid (502) is demagnetized, and the temperature of the secondary magnetic working fluid (502) decreases. The magnetic rotating heat pipe controls the flow of the liquid working fluid. The cold zone (8) and the hot zone (7) of the magnetic rotating heat pipe stop working. The liquid working fluid in the cascaded zone (11) of the magnetic rotating heat pipe absorbs the heat generated by the primary magnetic working fluid (501) and turns into steam. The steam diffuses to the secondary conical heat exchange plate (402) and is condensed into liquid by the secondary magnetic working fluid (502) on the secondary conical heat exchange plate (402). Under the action of centrifugal force, the liquid flows back down the cone to the primary magnetic working fluid zone. The working fluid circulates in sequence, rapidly transporting the heat generated by the primary magnetic working fluid (501) to the low-temperature secondary magnetic working fluid. (502) The temperature of the secondary magnetic working fluid (502) is increased, the primary magnetic working fluid (501) is demagnetized, the temperature of the primary magnetic working fluid (501) decreases, the secondary permanent magnet (102) magnetizes the secondary magnetic working fluid (502), the temperature of the secondary magnetic working fluid (502) increases further, thereby widening the temperature span, the magnetic rotating heat pipe cascade region (11) stops working, and the liquid fluid working fluids of the magnetic rotating heat pipe cooling region (8) and the magnetic rotating heat pipe heating region (7) respectively absorb the heat from the cold end (10) environment and the secondary magnetic working fluid (502). The vapor is converted into steam and diffused to the first-stage conical heat exchange plate (401) and the hot end (9). Through the first-stage conical heat exchange plate (401) and the hot end (9), the vapor is condensed into liquid by the first-stage magnetic working fluid (501) and the load, which are at a lower temperature. Under the action of centrifugal force, the liquid flows back down the cone to the cold end (10) and the second-stage magnetic working fluid area. The working fluid circulates in sequence and continuously outputs heat to the hot end (9). The second-stage room temperature magnetic heat pump device repeats the above process and continuously delivers heat to the hot end (9), thereby continuously achieving heating.

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