WO2021109937A1

WO2021109937A1 - Magnetic fluid heat exchange device

Info

Publication number: WO2021109937A1
Application number: PCT/CN2020/132268
Authority: WO
Inventors: 李翔; 余鹏; 牛小东; 李德才; 山口博司
Original assignee: 南方科技大学
Priority date: 2019-12-06
Filing date: 2020-11-27
Publication date: 2021-06-10
Also published as: CN110926244A

Abstract

Disclosed in the present invention is a magnetic fluid heat exchange device. The magnetic fluid heat exchange device comprises two heat exchange pipelines; one ends of the same side of the two heat exchange pipelines are communicated with a cooling pipeline; the other ends of the same side of the two heat exchange pipelines are communicated with a heat exchange chip; at least one of the two heat exchange pipelines is provided with a magnetic fluid reservoir used for storing a magnetic fluid; a heat source and a magnet used for generating a magnetic field are provided on the heat exchange chip; and a cooling structure is provided on the cooling pipeline. The magnetic fluid heat exchange device provided by the present invention has the advantages of being simple in structure and compact in design, having relatively independent components, and being convenient to maintain and overhaul; the magnetic fluid heat exchange device has good interchangeability, and can achieve modularization, seriation, and rapid design; and the magnetic fluid heat exchange device has no special requirement for a working environment, can adapt to various special environments, and is high in heat exchange efficiency.

Description

Magnetic fluid heat exchange device

Technical field

The invention relates to the field of heat exchange devices, in particular to a magnetic fluid heat exchange device.

Background technique

Conventional high-efficiency heat exchange equipment includes: plate heat exchangers and shell-and-tube heat exchangers. The above-mentioned heat exchangers are generally liquid-liquid heat exchange equipment.

However, most of the existing liquid-liquid heat exchange equipment has defects such as large volume, complicated processing and manufacturing processes, difficult maintenance, and low heat exchange efficiency. Therefore, the development of a heat exchange device that is simple to manufacture, small in size, easy to maintain, and high in heat exchange efficiency is of positive significance for the development of cooling processes for easy-to-heat chips or devices with larger heat generation.

Summary of the invention

The purpose of the present invention is to provide a magnetic fluid heat exchange device, which aims to solve the problems of large volume, complex structure, difficult maintenance and low heat exchange efficiency of existing heat exchange equipment.

The technical scheme of the present invention is as follows:

A magnetic fluid heat exchange device, comprising two heat exchange pipes, one end of the two heat exchange pipes on the same side is connected to a cooling pipe, and the other end of the two heat exchange pipes on the same side is connected to the cooling pipe. The heat exchange chips are in communication, at least one of the two heat exchange pipes is provided with a magnetic fluid reservoir for storing magnetic fluid, and the heat exchange chip is provided with a heat source and a magnet for generating a magnetic field, A cooling structure is provided on the cooling pipeline.

In the magnetic fluid heat exchange device, at least one of the two heat exchange pipes is provided with a micropump.

In the magnetic fluid heat exchange device, the magnetic fluid reservoir is provided on both of the two heat exchange pipelines.

In the magnetic fluid heat exchange device, the magnetic fluid includes a base carrier liquid and nano ferroferric oxide particles dispersed in the base carrier liquid.

In the magnetic fluid heat exchange device, the magnetic fluid further includes particles of high thermal conductivity dispersed in the base carrier fluid.

In the magnetic fluid heat exchange device, the particles with high thermal conductivity are one or more of silver particles, diamond particles, aluminum particles, graphite particles, and graphene particles.

In the magnetic fluid heat exchange device, the base carrier liquid is one or more of deionized water, kerosene, engine oil, phosphate solution and fluoroether oil.

In the magnetic fluid heat exchange device, the cooling pipeline includes a plurality of successively connected cooling sub-pipes arranged in an S-shaped arrangement, and the cooling structure is provided on the cooling sub-pipes.

In the magnetic fluid heat exchange device, wherein the upper and lower ends of the cooling sub-pipe are both provided with the cooling structure.

In the magnetic fluid heat exchange device, the cooling structure includes an energy conduction block directly in contact with the cooling sub-pipe, and heat dissipation fins arranged on the surface of the energy conduction block.

In the magnetic fluid heat exchange device, the cooling structure further includes a semiconductor cooling chip arranged between the energy conduction block and the heat dissipation fin.

In the magnetic fluid heat exchange device, the magnetic fluid reservoir includes a accommodating cavity for storing magnetic fluid, a filter screen arranged in the accommodating cavity, a sealing cover arranged at the top of the accommodating cavity, and The magnetic fluid inlet and the magnetic fluid outlet are arranged at the left and right ends of the accommodating cavity.

In the magnetic fluid heat exchange device, wherein the heat exchange chip is provided with micro-nano internal flow channels arranged in an S-shape.

In the magnetic fluid heat exchange device, a heat source is provided on the lower surface of the heat exchange chip, and a chip fixture is provided on the upper surface of the heat exchange chip, and the heat source and the chip fixture are fixed by screws.

Beneficial effects: Compared with the existing heat exchange equipment, the magnetic fluid heat exchange device provided by the present invention has the advantages of simple structure, compact design, and relatively independent components, and is convenient for maintenance and repair; the magnetic fluid heat exchange device has the advantages of good Interchangeability, modularization, serialization and rapid design can be realized; the magnetic fluid heat exchange device has no special requirements on the working environment, can adapt to various special environments, and has high heat exchange efficiency.

Description of the drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a magnetic fluid heat exchange device of the present invention.

Fig. 2 is a schematic structural diagram of a second embodiment of a magnetic fluid heat exchange device of the present invention.

Fig. 3 is a schematic structural diagram of a third embodiment of a magnetic fluid heat exchange device of the present invention.

Fig. 4 is a schematic structural diagram of a fourth embodiment of a magnetic fluid heat exchange device of the present invention.

Figure 5 is a schematic diagram of the explosion structure of the cooling structure of the present invention.

Fig. 6 is a schematic structural diagram of a fifth embodiment of a magnetic fluid heat exchange device of the present invention.

FIG. 7 is a schematic cross-sectional structure diagram of the magnetic fluid storage device of the present invention.

FIG. 8 is a schematic diagram of a quarter cross-sectional structure of the heat exchange chip of the present invention.

Fig. 9 is a schematic diagram of the exploded structure of the chip holder, the heat exchange chip and the heat source of the present invention.

Detailed ways

The present invention provides a magnetic fluid heat exchange device. In order to make the objectives, technical solutions and effects of the present invention clearer and clearer, the present invention will be described in further detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, but not used to limit the present invention.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a preferred embodiment of a magnetic fluid heat exchange device provided by the present invention. As shown in the figure, it includes two heat exchange pipes 10, the two heat exchange pipes One end of the same side of the two heat exchange pipes 10 is connected to the cooling pipe 20, the other end of the same side of the two heat exchange pipes 10 is connected to the heat exchange chip 30, and one of the two heat exchange pipes 10 is both A magnetic fluid reservoir 40 for storing magnetic fluid is provided, a heat source 50 and a magnet 11 for generating a magnetic field are provided on the heat exchange chip 30, and a cooling structure 60 is provided on the cooling pipeline 20.

In this embodiment, a magnetic fluid is used as the heat exchange medium in the heat exchange process. The magnetic fluid generates a thermomagnetic flow effect under the action of the magnetic field of the magnet 11, so that the magnetic fluid flows through the heat exchange chip 30 and the cooling pipe. 20 and reciprocatingly circulate, the magnetic fluid absorbs the heat generated by the heat source 50 when flowing through the heat exchange chip 30 and becomes a high-temperature magnetic fluid. When the high-temperature magnetic fluid flows through the cooling pipeline, it is set at The cooling structure on the cooling pipeline can cool the high-temperature magnetic fluid, thereby realizing convective heat exchange.

The magnetic fluid heat exchange device provided in this embodiment has the advantages of simple structure, compact design, and relatively independent components, which is convenient for maintenance and repair; the magnetic fluid heat exchange device has the characteristics of good interchangeability, and can be modularized and serialized. The magnetic fluid heat exchange device has no special requirements on the working environment, can adapt to various special environments, and has high heat exchange efficiency.

In some embodiments, a magnetic fluid heat exchange device is also provided, as shown in FIG. 2, which includes two heat exchange pipes 10, and one end of the two heat exchange pipes 10 on the same side is connected to the cooling pipe 20. The other ends of the two heat exchange pipes 10 on the same side are in communication with the heat exchange chip 30. The two heat exchange pipes 10 are each provided with a magnetic fluid reservoir 40 for storing magnetic fluid. The heat chip 30 is provided with a heat source 50 and a magnet 11 for generating a magnetic field, and the cooling pipe 20 is provided with a cooling structure 60.

In this embodiment, by arranging the magnetic fluid reservoir 40 on the two heat exchange pipes 10, the magnetic fluid can be further prevented from being obstructed in the flow process, and the rapid flow of the magnetic fluid can be promoted, thereby improving the The heat exchange efficiency of the magnetic fluid heat exchange device.

In some embodiments, a magnetic fluid heat exchange device is also provided, as shown in FIG. 3, which includes two heat exchange pipes 10, and one end of the two heat exchange pipes on the same side is in communication with the cooling pipe 20. The other ends of the two heat exchange pipes 10 on the same side are in communication with the heat exchange chip 30, and the two heat exchange pipes 10 are each provided with a magnetic fluid reservoir 40 for storing magnetic fluid. One of the heat exchange pipes 10 is also provided with a micropump 12, the heat exchange chip 30 is provided with a heat source 50 and a magnet 11 for generating a magnetic field, and the cooling pipe 20 is provided with a cooling structure 60.

In this embodiment, a micropump 12 is provided on a heat exchange pipeline. The micropump 12 can be used as the flow power source of the magnetic fluid in the magnetic fluid heat exchange device. When the magnetic fluid flows under the action of the magnetic field generated by the magnet When it is slow, it is necessary to start the micropump to force the magnetic fluid to move, so as to improve the convective heat transfer efficiency.

In some embodiments, a magnetic fluid heat exchange device is also provided, as shown in FIG. 4, which includes two heat exchange pipes 10, and one end of the two heat exchange pipes 10 on the same side is connected to the cooling pipe 20. Connected, the other end of the two heat exchange pipes 10 on the same side is connected with the heat exchange chip 30, and one of the two heat exchange pipes 10 is provided with a magnetic fluid reservoir for storing magnetic fluid 40. A micropump 12 is arranged on another heat exchange pipeline, a heat source 50 and a magnet 11 for generating a magnetic field are arranged on the heat exchange chip 30, and a cooling structure 60 is arranged on the cooling pipeline 20.

In this embodiment, a micropump 12 is also provided on a heat exchange pipeline, and the micropump 12 can also be used as the flow power source of the magnetic fluid in the magnetic fluid heat exchange device. When the magnetic fluid acts on the magnetic field generated by the magnet When the downward flow is slow, it is necessary to start the micropump to force the magnetic fluid to move, so as to improve the convective heat transfer efficiency.

In some embodiments, the micro pump is one of a micro peristaltic pump, a micro plunger pump, a micro pressure pump, or a micro gear pump, but is not limited thereto. In this embodiment, a suitable micropump can be designed and selected according to heat exchange requirements.

In some embodiments, the magnetic fluid includes a base carrier liquid and nano ferroferric oxide particles dispersed in the base carrier liquid. In this embodiment, the nano-trioxide tetroxide particles can be prepared by a solid-phase reaction method or a chemical co-precipitation method. In order to obtain pure nano-iron tetroxide particles, a chemical co-precipitation method is preferably used. The three iron particles are black crystals with magnetism, so they are also called magnetic iron oxide.

In some embodiments, the magnetic fluid further includes particles with high thermal conductivity dispersed in a base carrier fluid, and the particles with high thermal conductivity can form a fin-like chain in the flow channel through magnetic self-assembly under the action of a magnetic field. Structure, the high thermal conductivity particles forming the chain structure are dispersed in the magnetic fluid, which can effectively improve the thermal conductivity of the magnetic fluid. In this embodiment, by adjusting the intensity of the magnetic field, the length of the chain structure formed by the magnetic self-assembly of the high thermal conductivity particles can be adjusted. Within a certain range, the longer the chain structure is, the longer the chain structure is. The higher the thermal conductivity of the magnetic fluid is improved.

In some embodiments, nano ferroferric oxide particles can be dispersed in a base carrier liquid according to heat dissipation requirements to obtain nano ferroferric oxide solutions with different volume fractions. As an example, the base carrier fluid is one or more of deionized water, kerosene, engine oil, phosphate solution, and fluoroether oil, but it is not limited to this, and the viscosity, pressure, and pressure of the experimental fluid should be considered when selecting it. Economical to choose magnetic fluids with different magnetization strengths. The higher the magnetization, the more obvious the solid characteristics of the magnetic fluid and the higher the heat transfer efficiency. However, the rotation resistance is more obvious. Therefore, different magnets need to be designed according to actual needs. fluid.

In some embodiments, in order to improve the heat exchange efficiency, the cooling pipeline includes a plurality of successively connected cooling sub-pipes arranged in an S-shaped arrangement, and the cooling structure is provided on the plurality of cooling sub-pipes. As an example, as shown in FIG. 1, the cooling pipeline 20 may include three successively connected cooling sub-pipes 21 arranged in an S-shape, and the three cooling sub-pipes 21 are each provided with a cooling structure 60. In this embodiment, the magnetic fluid will flow through the cooling sub-pipes in sequence after absorbing the heat of the heat source. By arranging a plurality of the cooling sub-pipes 21 and setting the cooling sub-pipes to be S-shaped, The heat exchange area of the magnetic fluid is effectively increased, thereby effectively improving the heat exchange efficiency of the magnetic fluid heat exchange device.

In some embodiments, as shown in FIGS. 1 and 5, the cooling structure 60 includes an energy conduction block 61 directly in contact with the cooling sub-pipe 21, and heat dissipation fins arranged on the surface of the energy conduction block 62. In this embodiment, the energy conducting block 61 is equivalent to a heat conducting block. When the high-temperature magnetic fluid that has absorbed the heat of the heat source flows through the cooling sub-pipe 21, the energy conducting block 61 can transfer the high-temperature magnetic fluid The heat of the heat is conducted to the heat dissipation fins 62, so that the temperature of the high-temperature magnetic fluid is gradually reduced, so as to realize convective heat exchange.

In some embodiments, when the heat dissipation fins 62 are used alone to cool the high-temperature magnetic fluid, the convective heat exchange efficiency is low. Based on this, as shown in FIG. 5, a semiconductor cooling chip 63 may also be arranged between the energy conducting block 61 and the heat dissipation fin 62, and the semiconductor cooling chip 63 is connected with a chip power supply 64. In this embodiment, the semiconductor cooling chip 63 can be quickly cooled after being connected to the chip power supply 64. At this time, the energy conduction block 61 is equivalent to a cold conduction block. When the high-temperature magnetic fluid that has absorbed the heat of the heat source flows through the cooling In the sub-pipe 21, the energy conduction block 61 can quickly conduct the cold air generated by the semiconductor cooling chip 63 into the high-temperature magnetic fluid, so that the temperature of the high-temperature magnetic fluid is rapidly reduced, so as to achieve high-efficiency convection. Heat transfer. In this embodiment, the energy conducting block 61 can also effectively prevent the semiconductor cooling chip 63 from directly contacting the cooling sub-pipe 21, thereby preventing the magnetic fluid inside the cooling sub-pipe 21 from solidifying, thereby obstructing or blocking The flow of the magnetic fluid in the cooling sub-pipe 21.

In some embodiments, as shown in FIG. 6, in order to improve the convective heat exchange efficiency of the magnetic fluid heat exchange device, the cooling structure 60 is provided at the upper and lower ends of the cooling sub-pipe 21, so that the magnetic The heat exchange efficiency of the fluid heat exchange device is doubled.

In some embodiments, as shown in FIG. 7, the magnetic fluid reservoir 40 includes a receiving cavity 41 for storing magnetic fluid, and a filter mesh 42 arranged in the receiving cavity 41 is arranged in the receiving cavity 41. The sealing cover 43 at the top, and the magnetic fluid inlet 44 and the magnetic fluid outlet 45 arranged at the left and right ends of the containing cavity 41. In this embodiment, the filter mesh 42 is mainly used to filter the micro-nano aggregate particles formed during the flow of the magnetic fluid and the dust deposited in the flow channel, so as to effectively prevent the magnetic fluid from being obstructed during the flow.

In some specific embodiments, as shown in FIG. 7, the filter mesh 42 includes a plurality of filter sheets 421 arranged in a matrix, and a plurality of filter holes 422 are provided on the filter sheet 421. The size of the filter hole 422 can be set according to requirements.

In some specific embodiments, the bottom of the sealing cover 43 is provided with an annular groove 431, and a corresponding annular permanent magnet block is arranged on the annular groove 431, and the width of the annular permanent magnet block is smaller than that of the annular concave. The width of the groove 431, the sealing cover can effectively prevent the leakage of the magnetic fluid inside the accommodating cavity, and can also prevent external dust particles from entering the accommodating cavity 41 of the magnetic fluid reservoir. The magnetic viscosity increases under the action of a magnetic field. In this embodiment, the material of the ring-shaped permanent magnet block includes neodymium iron boron permanent magnets, ferrite permanent magnets, etc., and the magnetic field strength of the ring-shaped permanent magnet block is greater than 0.1 Tesla. Under the condition of the magnetic field strength, the Part of the magnetic fluid located in the receiving cavity 41 can be sucked into the gap between the annular permanent magnet block and the annular groove 431, thereby preventing external dust particles from entering the receiving cavity 41 and being located in the gap The magnetic fluid in the magnetic fluid increases in viscosity under the action of the magnetic field of the annular permanent magnet block, thereby preventing the leakage of the magnetic fluid.

In some embodiments, a waste liquid outlet 46 is also provided at the bottom of the containing cavity 41. During the use of the magnetic fluid reservoir, the waste fluid outlet 46 is sealed; when the magnetic fluid reservoir is used, the waste fluid outlet can be opened to discharge or replace the magnetic fluid inside the accommodating cavity 41 , Or clean the containing cavity 41.

In some embodiments, as shown in FIG. 8, the heat exchange chip 30 is provided with micro-nano internal flow channels 31 arranged in an S-shape. In this embodiment, by arranging micro-nano internal flow channels 31 arranged in an S-shape in the heat exchange chip 30, the convective heat exchange area of the magnetic fluid can be increased, thereby effectively improving the heat exchange of the magnetic fluid heat exchange device. effectiveness.

In some embodiments, as shown in FIGS. 1 and 8, the heat exchange chip 30 is also provided with a heat exchange chip magnetic fluid inlet 32 and a heat exchange chip magnetic fluid outlet that are in communication with the micro-nano internal flow channel 31. 33. The heat exchange chip 30 communicates with the other end of the two heat exchange pipes 10 on the same side through the magnetic fluid inlet 32 of the heat exchange chip and the magnetic fluid outlet 33 of the heat exchange chip. The connecting end of the heat exchange chip 30 and the two heat exchange pipes 10 is also provided with a pipe joint 70, which can prevent the magnetic fluid from being exchanged between the heat exchange chip 30 and the two heat exchange pipes. The connection end of the heat pipe 10 leaks.

In some embodiments, as shown in FIGS. 1 and 9, a heat source 50 is provided on the lower surface of the heat exchange chip 30, and a chip holder 80 is provided on the upper surface of the heat exchange chip 30. The chip holder 80 is fixed by screws. In this embodiment, the upper surface of the heat exchange chip 30 is further provided with a protruding positioning block 34, the chip holder 80 is provided with a mounting positioning groove 81 adapted to the protruding positioning block 34, and the chip The four corners of the clamp 80 are provided with first threaded holes 82, the bottom of the heat source 50 is provided with a support base 51, and the four corners of the support base 51 are provided with a first threaded hole corresponding to the position of the first threaded hole. Two threaded holes 52. In this embodiment, the raised positioning block 24 of the heat exchange chip 30 is mounted on the mounting and positioning groove 81 of the chip holder 80, and the heat source provided on the support base 51 is set on the heat exchange Below the chip 30, the second threaded hole 52 on the support base 51 is aligned with the first threaded hole 82 on the chip holder 80, and a screw is passed through the first threaded hole 82 and the second threaded hole 52, so that the heat source 50, the heat exchange chip 30 and the chip holder 80 are fixed together.

In some embodiments, a plurality of U-shaped grooves 83 are provided on both sides of the chip holder 80, and a buckle adapted to the U-shaped groove 83 is provided on the magnet 11. In this embodiment, the U-shaped card slot 83 provided on the chip holder 80 is mainly used to install a magnet, and the magnet is used to generate a magnetic field required for thermomagnetic flow. In this embodiment, the magnet can be a permanent magnet or an electromagnet; when using a permanent magnet, it can save power consumption, and by increasing the number of permanent magnets, the magnetic field strength can be adjusted accordingly; when using an electromagnet, The intensity of the magnetic field generated by the electromagnet can be regulated by controlling the magnitude of the current.

In summary, the present invention uses magnetic fluid as the heat exchange medium in the heat exchange process. The magnetic fluid generates a thermomagnetic flow effect under the action of the magnetic field of the magnet, so that the magnetic fluid flows through the heat exchange chip and cools down. When the magnetic fluid flows through the heat exchange chip, it absorbs the heat generated by the heat source and becomes a high-temperature magnetic fluid. When the high-temperature magnetic fluid flows through the cooling pipeline, the magnetic fluid is set in the cooling pipe. The cooling structure on the cooling pipeline can cool the high-temperature magnetic fluid, thereby realizing efficient convective heat exchange. The magnetic fluid heat exchange device provided by the present invention has the advantages of simple structure, compact design, and relatively independent components, which is convenient for maintenance and repair; the magnetic fluid heat exchange device has the characteristics of good interchangeability, and can realize modularization and serialization. And rapid design; the magnetic fluid heat exchange device has no special requirements for the working environment, can adapt to various special environments, and has high heat exchange efficiency.

It should be understood that the application of the present invention is not limited to the above examples, and those of ordinary skill in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the protection scope of the appended claims of the present invention.

Claims

A magnetic fluid heat exchange device, characterized in that it comprises two heat exchange pipelines, one end of the two heat exchange pipelines on the same side is connected to a cooling pipeline, and the other on the same side of the two heat exchange pipelines One end is in communication with the heat exchange chip, at least one of the two heat exchange pipelines is provided with a magnetic fluid reservoir for storing magnetic fluid, and the heat exchange chip is provided with a heat source and a magnetic field. A magnet, and a cooling structure is provided on the cooling pipeline.
The magnetic fluid heat exchange device according to claim 1, wherein at least one of the two heat exchange pipes is provided with a micro pump.
The magnetic fluid heat exchange device according to claim 1, wherein the magnetic fluid reservoir is provided on both of the two heat exchange pipelines.
The magnetic fluid heat exchange device according to claim 1, wherein the magnetic fluid comprises a base carrier liquid and nano ferroferric oxide particles dispersed in the base carrier liquid.
4. The magnetic fluid heat exchange device according to claim 4, wherein the magnetic fluid further comprises particles of high thermal conductivity dispersed in the base carrier fluid.
The magnetic fluid heat exchange device according to claim 5, wherein the particles with high thermal conductivity are one or more of silver particles, diamond particles, aluminum particles, graphite particles, and graphene particles.
The magnetic fluid heat exchange device according to claim 4, wherein the base carrier liquid is one or more of deionized water, kerosene, engine oil, phosphate solution, and fluoroether oil.
The magnetic fluid heat exchange device according to claim 1, wherein the cooling pipeline comprises a plurality of cooling sub-pipes arranged in an S-shaped arrangement connected in sequence, and the cooling sub-pipes are all provided with the cooling sub-pipes. structure.
The magnetic fluid heat exchange device according to claim 8, wherein the cooling structure is provided at both upper and lower ends of the cooling sub-pipe.
The magnetic fluid heat exchange device according to any one of claims 8-9, wherein the cooling structure comprises an energy conduction block directly in contact with the cooling sub-pipe, and an energy conduction block arranged on the surface of the energy conduction block. Cooling fins.
The magnetic fluid heat exchange device according to claim 10, wherein the cooling structure further comprises a semiconductor cooling chip arranged between the energy conducting block and the heat dissipation fin.
The magnetic fluid heat exchange device according to claim 1, wherein the magnetic fluid reservoir comprises a containing cavity for storing magnetic fluid, and a filter screen arranged in the containing cavity is arranged in the containing cavity The sealing cover at the top, and the magnetic fluid inlet and the magnetic fluid outlet provided at the left and right ends of the containing cavity.
The magnetic fluid heat exchange device according to claim 1, wherein the heat exchange chip is provided with micro-nano internal flow channels arranged in an S-shape.
The magnetic fluid heat exchange device according to claim 1, wherein a heat source is arranged on the lower surface of the heat exchange chip, and a chip holder is arranged on the upper surface of the heat exchange chip, the heat source and the chip holder Secured by screws.