CN207460711U - Magnetic refrigeration radiating device - Google Patents

Abstract

The utility model discloses a magnetic refrigeration and heat dissipation device, which comprises a magnetic refrigeration system, a heat dissipation system and a drive control system. The magnetic refrigeration system includes a magnetic field system, a magnetic working medium device, a cooling end and a heating end, wherein the magnetic working medium is placed in the magnetic field system, and its magnetic moment changes with the change of the magnetic field direction; the heat dissipation system It is composed of a pump body, a disc-shaped seamless heat-dissipating pipe, a disc-shaped seamless heat-absorbing pipe, a draft tube, and a cooling liquid. The cooling liquid is driven by the pump body to reciprocate in the pipe. The utility model controls the single-chip microcomputer in the self-adaptive opening and closing drive control system of the intelligent temperature control switch. Compared with the traditional single heat dissipation system, the heat dissipation efficiency is higher, and the magnetic leakage can be effectively reduced, and the heat dissipation and cooling of the heat-dissipated parts can be realized intelligently, energy saving, environmental protection, pollution-free, and extremely low noise.

Description

Magnetic refrigeration cooling device

technical field

The utility model relates to the technical field of heat dissipation, in particular to a magnetic refrigeration heat dissipation device.

Background technique

Magnetic refrigeration refers to a new type of refrigeration technology that uses magnetic materials as working fluids. During the demagnetization process, due to the change of internal magnetic entropy, the material absorbs and releases heat, that is, when the magnetic field applied to the magnetic material increases, its temperature rises; when the magnetic field applied to the magnetic material decreases, its temperature decreases, and it It is an inherent characteristic of magnetic materials and a new technology with energy saving, environmental protection, low vibration and noise, and high reliability.

With the rapid development of electronics and semiconductor technology, electronic devices and semiconductor integrated circuits are developing in the direction of high performance, compactness, intelligence, and miniaturization. Miniaturization and continuous improvement of operating frequency. At the same time, the energy consumption and calorific value of high heat flux heating chips (such as CPU, GPU, LED) and integrated circuits are increasing day by day. Here, the heat dissipation of a computer CPU (Central Processing Unit, central processing unit) is taken as an example, but it is not limited to the heat dissipation of a computer CPU. The CPU is a very large-scale integrated circuit, which is the computing core of a computer. The increase in the number of CPU transistors improves the computing power and efficiency of the processor, but this also leads to a linear increase in its power consumption and heat generation. There is a certain threshold of working temperature. If the threshold is exceeded, the working performance of components will be greatly reduced, and the stability of the system will also be seriously affected, thus affecting all aspects of people's work and life.

Existing radiators can be roughly divided into three categories: forced air cooling, water cooling and heat pipe cooling. The air-cooled type is the most common type of radiator on the market, including a cooling fan and a cooling fin. The principle is to transfer the heat generated by electronic components to the heat sink, and then take the heat away through the fan. However, due to the large size of the fan itself, it takes up a lot of space, which is not conducive to the installation and layout of other components, and its working process The noise in the medium is large, and it is easy to cause interference to the external environment; the water-cooled radiator uses a liquid to force the circulation of the heat under the drive of the pump to take away the heat of the radiator, but the heat absorption and heat dissipation efficiency of water is low, and the cooling and heat dissipation cycle is long. etc.; heat pipe heat transfer through the evaporation and condensation of the liquid in the fully enclosed vacuum tube to transfer heat, because the capillary core heat pipe needs to sinter the capillary core on the inner wall, the support process is more complicated, etc.

In order to reduce and eliminate the shortcomings of the above-mentioned scheme and structure, it is necessary to design the heat dissipation problems of structures such as electronic components and semiconductor chips. Various schemes and structures for the above-mentioned problems have been disclosed in the prior art. Carry out structural optimization design on the structure of the heat sink, or change the angle of the fan blade, or use materials with better thermal conductivity, etc. This type of structure and design increases the heat dissipation area to a certain extent, and the heat dissipation efficiency is also improved to a certain extent, but there are still shortcomings: the design of this type of heat dissipation structure is based on the heat dissipation under the existing room temperature conditions, that is to say , the heat dissipation threshold of this type of structural scheme cannot be lower than room temperature, the heat dissipation efficiency is low, and once the heat dissipation structure and heat dissipation method are determined, the heat dissipation efficiency of the system, the structural size of the installation, etc. will also be determined, the heat dissipation is constant, and the environmental adaptability is poor .

Therefore, in view of the problems existing in the above scheme structure and the shortcomings of the existing scheme structure, a magnetic cooling and heat dissipation device with high heat dissipation efficiency, intelligent controllability, energy saving, environmental protection, pollution-free and low noise is proposed.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a magnetic refrigeration and heat dissipation device with high heat dissipation efficiency, intelligent controllability, energy saving, environmental protection, pollution-free and low noise.

The purpose of the utility model is achieved through the following technical solutions: a magnetic refrigeration and heat dissipation device, including a magnetic refrigeration system, a heat dissipation system and a drive control system.

The magnetic refrigeration system includes a magnetic field system, a magnetic working medium device, a cooling end, and a heating end; the magnetic field system is composed of several electromagnets, and the electromagnets are programmed by the single-chip microcomputer in the drive control system. The electromagnet is driven and controlled to periodically generate the magnetic field required by the magnetic refrigeration system. The magnetic working medium is placed in the magnetic field system, and its magnetic moment is either neat or disordered according to the change of the magnetic field direction of the electromagnet. The magnetic working medium device is a non-ferromagnetic honeycomb cylindrical body, and the magnetic working medium is a magnetic fluid, and the magnetic fluid includes nano-magnetic ferrite particles, petroleum ether magnetic liquid carrier liquid and monolauryl phosphoric acid The ester surfactant and the ferrofluid are filled in the honeycomb cylindrical barrel.

The heat dissipation system is composed of a pump body, a disc-shaped seamless heat-dissipating pipe, a disc-shaped seamless heat-absorbing pipe, a guide pipe, and a cooling liquid; Under ground drive control, the cooling liquid is driven by the pump body to circulate in the heat dissipation pipe, heat absorption pipe, and flow guide pipe, and the disc-shaped seamless heat absorption pipe is placed above the heat sink to absorb the heat of the heat sink , reduce the ambient temperature of the heat sink. The cooling liquid flows in the guide tube, and the cooling liquid guide tube first passes through and distributes in the honeycomb pores of the honeycomb cylindrical cylindrical body magnetic working medium device, and then passes through the honeycomb cylindrical cylindrical magnetic working medium device. Winding distribution on the outer surface.

The drive control system is composed of a circuit control system composed of a power supply, an intelligent temperature control switch, a single-chip microcomputer, etc.; the intelligent temperature control switch can automatically turn on or off the magnetic refrigeration system and heat dissipation system according to the temperature threshold set by itself. On the one hand, the single-chip microcomputer controls the periodic changes of the magnetic field system, and on the other hand, it drives the periodic flow of coolant by controlling the pump body, and it can also coordinate and control the changes of the two according to a certain ratio to ensure that the entire system is more efficient. Realize intelligent cycle refrigeration and heat dissipation.

The disc-shaped seamless pipe is seamlessly fixedly connected at the center by an annular buckle; the disc-shaped seamless pipe and the annular buckle may also be integrally structured.

The shape of the disc-shaped seamless pipe can be different according to the change of the actual shape of the heat-dissipated part, and its shape can be circular, elliptical or polygonal.

The cross-sectional shape of the disc-shaped seamless pipe can be circular, oval or polygonal.

A heat dissipation fin or a heat dissipation fan or a heat dissipation fin and a heat dissipation fan may be arranged above the disc-shaped seamless heat dissipation pipe at the heat dissipation end to increase the heat dissipation efficiency of the coolant.

A number of heat dissipating grease or heat conducting paste can be arranged above the heat dissipating part at the heat absorbing end and below the disc-shaped seamless heat absorbing pipe, so as to increase the heat dissipation area of the heat dissipating part.

The temperature control switch is fixedly connected above the radiated part, and detects and feeds back the temperature of the radiated part in real time.

The number of the magnetic field system and the corresponding magnetic working fluid devices can be set in multiples according to the actual heat dissipation requirements of the heat dissipation parts.

The utility model describes a magnetic refrigeration and heat dissipation device with high heat dissipation efficiency, intelligence and controllability, energy saving and environmental protection, no pollution, and low noise, which not only maintains the existing scheme and structure, but also increases the heat dissipation area and heat dissipation efficiency to a certain extent. The degree can be improved a bit, and has the following different beneficial technical effects:

(1) Using magnetic refrigeration technology: a magnetic refrigeration heat dissipation device provided by the utility model is a radiator based on magnetic refrigeration technology. It adopts solid-fluid heat exchange technology, large contact area, fast and efficient heat transfer, and the efficiency of magnetic refrigeration can reach 30-60% of the Carnot cycle, with high reliability and long service life. Low vibration and noise, energy saving, green and environmental protection, no pollution, easy operation, high reliability, etc.

(2) The heat dissipation threshold of the system is lower than room temperature: traditional heat dissipation systems are based on heat dissipation at room temperature, that is to say, the minimum temperature threshold for heat dissipation is room temperature. The utility model provides a magnetic refrigeration heat dissipation device, which adopts magnetic refrigeration technology. While the system dissipates heat at room temperature, it can use the magnetocaloric effect to refrigerate, reduce the temperature around the radiated parts, even lower than room temperature, and have high heat dissipation efficiency. The threshold range is large.

(3) Adaptive temperature control adjustment: traditional heat dissipation structure is air-cooled, or water-cooled, or air-cooled and water-cooled, once its heat dissipation form or heat dissipation structure is determined, its heat dissipation power, heat dissipation amount, heat dissipation efficiency, etc. It is fixed and is always in working condition during its use, but the environment, working mode, and working state of the cooling parts are different, and the required heat dissipation is also very different. The utility model provides a magnetic cooling and heat dissipation device, which can automatically open or close the magnetic refrigeration system and heat dissipation system according to the temperature threshold set by itself through the temperature control switch placed above the heat dissipation part. It is intelligent and controllable, which not only ensures the heat dissipation The components are always within the normal temperature range, without wasting and additional loss of various resources.

(4) Honeycomb cylindrical cylindrical body magnetic working medium device: the magnetic working medium is magnetic fluid, which has the advantages of large thermal effect and fast heat transfer speed compared with solid magnetic refrigeration working medium, and the heat exchange effect can be enhanced to improve the refrigeration efficiency. improved; the magnetic fluid uses petroleum ether as a carrier liquid and a monolauryl phosphate surfactant, the nano-magnetic ferrite particles can be stably dispersed in the carrier liquid, the ferrite particles are not easy to agglomerate, the dispersion system is very stable, and The magnetic anisotropy constant of the nano-magnetic ferrite particles treated with monolauryl phosphate is increased, and the magnetocaloric effect of the untreated magnetic particles can be increased by 20%. The design of the honeycomb cylindrical cylindrical body magnetic working fluid device can reduce the formation of eddy current and improve the coupling effect, thereby reducing the generation of magnetic flux leakage. The magnetic flux leakage signal is collected by the magnetic flux leakage detector, and the magnetic working fluid of the honeycomb cylindrical cylindrical body is detected. Compared with solid magnetic working medium and non-honeycomb cylindrical cylindrical magnetic fluid magnetic working medium device, the magnetic flux leakage phenomenon of the device is significantly improved, which effectively improves the magnetic utilization rate and reduces the interference of magnetic flux leakage to the equipment; at the same time, the cooling liquid is guided The flow tubes are first wound and distributed in the honeycomb pores of the honeycomb cylindrical magnetic working medium device, and then spirally wound and distributed on the outer surface of the honeycomb cylindrical magnetic working medium device, which can greatly improve the heat exchange efficiency. Compared with the existing magnetic refrigerant coolant heat exchange method, it has obvious advantages in heat exchange effect.

(5) Disc-shaped seamless pipe: The utility model provides a magnetic refrigeration heat dissipation device, which has higher heat dissipation efficiency than traditional U-shaped or serpentine pipes. When the area of the heat dissipation or heat absorption area is fixed, the coolant absorbs heat and heat in the disc-shaped seamless pipe, and as the coolant flows forward in the pipe, the coolant is cooled and the temperature decreases, or the coolant flows forward Heat is absorbed and the temperature rises. In short, the closer the flow position in the pipeline is, the greater the difference between its temperature and the coolant temperature at the entrance of the pipeline is. The coolant pipe section at the inlet end and the coolant pipe section at the lower temperature close to the outlet end are closely adjacent to each other, so the temperature difference of the coolant in the two adjacent layers of pipes is large, and the greater the temperature difference of the coolant in the adjacent layer, the higher the heat transfer rate, and the coolant therefore It can absorb and dissipate heat faster. In addition, the longer the cooling or heat absorption path, the more sufficient the heat exchange. The heat dissipation pipe is designed as a disc-shaped seamless spiral. Shaped seamless heat dissipation pipes can more fully absorb and dissipate heat.

Description of drawings

Fig. 1 is a schematic diagram of the structural principle of Embodiment 1 of a magnetic refrigeration and heat dissipation device described in the present invention;

Fig. 2 is a schematic structural view of the magnetic working medium device in the utility model;

Fig. 3 is a schematic diagram of the water inlet winding of the draft tube on the magnetic working medium device in the utility model;

Fig. 4 is a schematic diagram of the water outlet winding of the draft tube on the magnetic working medium device in the utility model;

Fig. 5 is a front view of the winding of the guide tube on the magnetic working medium device in the utility model;

Fig. 6 is a schematic diagram of the operation flow of a pump body in a working cycle of the embodiment of a magnetic refrigeration and heat dissipation device described in the present invention;

Fig. 7 is a schematic diagram of the magnetic flux change in a working cycle of the magnetic refrigeration and heat dissipation device embodiment of the utility model-the outer magnetic field system of the first magnetic working medium device;

Fig. 8 is a schematic diagram of the magnetic flux variation of the second magnetic working medium device outer magnetic field system in a working cycle of the embodiment of the magnetic refrigeration and heat dissipation device described in the present invention;

Fig. 9 is a schematic diagram of the structural principle of Embodiment 2 of a magnetic refrigeration and heat dissipation device described in the present invention;

Fig. 10 is a schematic diagram of the operation flow of the pump body in a working cycle of Embodiment 2 of a magnetic refrigeration and heat dissipation device according to the present invention;

Fig. 11 is a schematic diagram of the change of the magnetic flux in a working cycle of the outer magnetic field system of the magnetic working medium device in Embodiment 2 of a magnetic refrigeration and heat dissipation device according to the present invention;

Reference signs:

In the figure, 1-magnetic field system, 2-first magnetic working medium device, 3-disc-shaped seamless heat dissipation pipe, 4-ring buckle, 5-drain tube, 6-pump body, 7-second magnetic worker Mass device, 8-disc-shaped seamless heat-absorbing pipe, 9-magnetic working medium device, 10-water inlet, 11-water outlet.

Detailed ways

The technical solutions of the embodiments of the present invention will be specifically and clearly described below in conjunction with the accompanying drawings and embodiments. Apparently, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments described in the present utility model, all other embodiments similar to the present utility model obtained by persons of ordinary skill in the art without creative work are within the protection scope of the present utility model.

Example 1

In this embodiment, a schematic structural diagram of a magnetic refrigeration and heat dissipation device is shown in FIG. 1 , including a magnetic refrigeration system, a heat dissipation system, and a drive control system.

The magnetic refrigeration system includes a magnetic field system 1, a first magnetic working medium device 2, a second magnetic working medium device 7, a cooling end and a heating end; the magnetic field system is composed of two pairs of electromagnets, and the electromagnets are composed of The single-chip microcomputer in the drive control system drives and controls the electromagnet through the set program to periodically generate the magnetic field required by the magnetic refrigeration system. The magnetic working medium is placed in the magnetic field system 1, and its magnetic moment follows the magnetic field of the electromagnet. The change of the direction is neat or disorderly; the magnetic working medium device 9 is a honeycomb cylindrical tube of non-ferromagnetic material, and the magnetic working medium is a magnetic fluid, and the magnetic fluid includes nano-magnetic ferrite particles , petroleum ether magnetic liquid carrier liquid and monolauryl phosphate surfactant, and the magnetic fluid is filled in the honeycomb cylindrical cylinder.

The heat dissipation system is composed of a pump body 6, a disc-shaped seamless heat-dissipating pipe 3, a disc-shaped seamless heat-absorbing pipe 8, a draft tube 5, and a coolant; A certain program is periodically driven and controlled, and the cooling liquid is driven by the pump body 6 to flow in a reciprocating cycle in the heat dissipation pipe 3, the heat absorption pipe 8, and the draft pipe 5, and the 8 disc-shaped seamless heat absorption pipes are Placed above the radiated parts to absorb the heat of the radiated parts and reduce the ambient temperature of the radiated parts; the coolant flows through the guide tube, and the coolant guide tube is first passed around and distributed in the honeycomb cylindrical cylindrical body magnet In the honeycomb pores of the magnetic working medium device, it is spirally wound and distributed on the outer surface of the magnetic working medium device of the honeycomb cylindrical cylindrical body. flow out. The structures of the first magnetic working medium device 2 and the second magnetic working medium device 7 are similar, and both are described by the structural diagrams 2-5 of the magnetic working medium device 9 .

The drive control system is composed of a circuit control system composed of a power supply, an intelligent temperature control switch, a single-chip microcomputer, etc.; the intelligent temperature control switch can automatically turn on or off the magnetic refrigeration system and heat dissipation system according to the temperature threshold set by itself. On the one hand, the single-chip microcomputer controls the periodic changes of the magnetic field system 1, and on the other hand controls the pump body 6 to drive the cooling liquid to flow periodically, and it can also coordinate and control the changes of the two according to a certain ratio, so as to ensure that the whole system is more stable. Efficiently realize intelligent circulation refrigeration and heat dissipation.

Preferably, the disc-shaped seamless pipe is fixedly connected at the center through a ring buckle without gap.

Preferably, the outer shape of the disc-shaped seamless heat dissipation pipe 3 is circular.

Preferably, the shape of the disc-shaped seamless heat-absorbing pipe 8 is square.

Preferably, the cross-sectional shape of the disc-shaped seamless pipe may be circular.

Preferably, a heat dissipation fan and heat dissipation fins are arranged above the disc-shaped seamless heat dissipation pipe 3 to increase heat dissipation efficiency of the coolant.

Preferably, a number of heat dissipating greases may be arranged above the heat sink part at the heat absorption end and below the disc-shaped seamless heat absorption pipe 8 to increase the heat dissipation area of the heat sink part.

Preferably, the temperature control switch is fixedly connected above the heat sink to detect and feed back the temperature of the heat sink in real time.

Preferably, the number of the magnetic field system 1 and the corresponding magnetic working fluid devices is set to two according to the actual requirements of the parts to be radiated.

As shown in Figure 6, the operation flow chart of the pump body of the magnetic refrigeration and heat dissipation device described in the present utility model in one working cycle, and Figure 7 is the embodiment of the magnetic refrigeration and heat dissipation device described in the present utility model—the outside of the first magnetic working medium device The schematic diagram of the magnetic flux variation of the magnetic field system within a working cycle, and Fig. 8 is a schematic diagram of the magnetic flux variation of the magnetic refrigeration and heat dissipation device embodiment of the utility model-the second magnetic working medium device outside the magnetic flux system within a working cycle. 6, the schematic diagram of the magnetic flux change outside the first magnetic working medium device in FIG. 7, and the schematic diagram of the magnetic flux change in the external magnetic field of the second magnetic working medium device in FIG. 8, briefly describe the magnetic refrigeration heat dissipation. The general working principle of the device.

The cooling liquid in the disc-shaped seamless heat-dissipating pipe 3 is radiated to the room temperature state by the cooling fan or the cooling fin, and the cooling liquid in the disc-shaped seamless heat-absorbing pipe 8 is in the same state as the temperature of the heat-dissipated parts, as the system The assumed initial state of the work, and the reverse flow of the entire system coolant in Figure 1 is used as the assumption condition for the forward rotation of the pump body 6, where each character in the figure represents:

n: the speed of the pump body 6, the unit is (r/min), and its working rated speed value is set and adjusted by the single-chip microcomputer in the control system;

T: pump body 6 working cycle, the unit is s, and its rated working cycle value is set and adjusted by the single-chip microcomputer in the control system;

T ₁ : the working cycle of pump body 6 forward rotation, the unit is s, and the rated working cycle value is set and adjusted by the single-chip microcomputer in the control system;

T ₂ : pump body 6 reverse working cycle, the unit is s, and its rated working cycle value is set and adjusted by the single-chip microcomputer in the control system;

t ₁ -t ₈ : the working time or interval time of the pump body 6 in each stage, the unit is s, and the rated working time value is set and adjusted by the single-chip microcomputer in the control system.

The general working principle of the magnetic refrigeration cooling device is as follows:

As shown in Figure 6, the operation flow chart of the pump body of the magnetic refrigeration and heat dissipation device described in the present utility model in one working cycle, and Figure 7 is the embodiment of the magnetic refrigeration and heat dissipation device described in the present utility model—the outside of the first magnetic working medium device The schematic diagram of the change of the magnetic flux of the magnetic field system in one working cycle is shown: the temperature control switch located under the disc-shaped seamless heat-absorbing pipe 8 and above the heat sink, when the temperature of the heat sink reaches its set temperature control threshold Finally, the temperature control switch is automatically closed, and the single-chip microcomputer enters the working state. Through the adjustment and control of the single-chip microcomputer, the magnetic refrigeration system and the heat dissipation system are triggered to start working: in the time period _t1 , under the control of the single-chip microcomputer in the drive control system, the pump The body 6 rotates forward, and the coolant in the disc-shaped seamless heat-absorbing pipe 8 that absorbs the heat radiated by the heat sink is driven by the pump body 6 and flows to the flow guide pipe 5 that passes through the first magnetic working medium device 2 ; In the _t2 time period, on the one hand, under the control of the single-chip microcomputer in the drive control system, the pump body stops rotating, and the coolant that absorbs the heat emitted by the radiation of the heat sink stagnates on the first magnetic working medium device 2 to wear On the other hand, the single-chip microcomputer in the drive control system controls the magnetic field system 1 outside the first magnetic working medium device 2, so that the magnetic field of the magnetic working medium 1 increases. At this time, the magnetic working medium 2 Under the action of an external magnetic field, a magnetocaloric effect is generated, so that the directions of the magnetic moments are aligned (the magnetic entropy becomes smaller). At this time, the magnetic working medium 2 releases heat to the cooling liquid in the flow guide tube 5 that it passes through, and the cooling is achieved through heat exchange. The temperature of the liquid further increases; in the time period _t3 , under the control of the single-chip microcomputer in the drive control system, the pump body 6 rotates forward, and the heated cooling liquid in the guide tube 5 on the first magnetic working medium device 2 Driven by the pump body 6, the first magnetic working medium device 2 flows to the disc-shaped seamless cooling pipe 3; in the _t4 time period, under the control of the single-chip microcomputer in the drive control system, the pump body 6 stops rotating , the heated coolant radiates outward to release the heat radiated by the heat sink and the first magnetic working medium device 2 to the coolant, and the temperature of the coolant decreases, even to room temperature. According to actual needs, if necessary, Heat dissipation fins or heat dissipation fans or heat dissipation fins and heat dissipation fans can be set above the disc-shaped seamless heat dissipation pipe ₃ to increase the heat dissipation efficiency of the cooling liquid; Under the control, the pump body 6 reverses, and the coolant in the disc-shaped seamless heat dissipation pipe 3 is cooled to room temperature by the heat dissipation fan or fins, driven by the pump body 6, and flows from the disc-shaped seamless heat dissipation pipe 3 to the second There are 5 guide tubes on the magnetic working medium device 2; during the time period _t6 , on the one hand, under the control of the single-chip microcomputer in the drive control system, the pump body 6 stops rotating, and the cooling liquid at room temperature stagnates In the guide tube 5 on the first magnetic working medium device 2, on the other hand, the single-chip microcomputer in the drive control system controls the magnetic field system 1 wound on the first magnetic working medium device 2, so that the magnetic field system 1 magnetic field At this time, the magnetic working medium 2 produces a magnetocaloric effect under the action of the external magnetic field, making the direction of the magnetic moment into a disordered state (the magnetic entropy increases), and the magnetic working medium 2 passes through it The cooling liquid in the guide tube 5 absorbs heat, and the temperature of the cooling liquid is further reduced by heat exchange; in the time period _t7 , under the control of the single-chip microcomputer in the drive control system, the pump body 6 reverses, and the first magnetic The cooled cooling liquid in the guide tube 5 on the working medium device 2 is driven by the pump body 6 and flows from the first magnetic working medium device 2 to the disc-shaped seamless heat-absorbing pipe 8 above the heat sink; at _t8 During the period of time, under the control of the single-chip microcomputer in the drive control system, the pump body 6 stops rotating, the cooled coolant absorbs the heat radiated by the heat sink, the temperature of the coolant rises, and the temperature of the heat sink increases accordingly. If necessary, some thermal grease or thermal paste can be set above the heat-absorbing end of the heat-absorbing end and below the plate-shaped seamless heat-absorbing pipe 8 to increase the size of the heat-dissipating part. heat dissipation area and heat dissipation efficiency.

At the same time as the above work process, the following work process is also carried out:

As shown in Figure 6, the operation flow chart of the pump body of a magnetic refrigeration and heat dissipation device described in the present utility model in one working cycle, and Figure 8 is an embodiment of a magnetic refrigeration and heat dissipation device described in the present utility model—the outside of the second magnetic working medium device The schematic diagram of the change of the magnetic flux of the magnetic field system in one working cycle is shown in the following figure: in the time period _t1 , under the control of the single-chip microcomputer in the drive control system, the pump body 6 rotates forward, and the heat is dissipated in the disc-shaped seamless heat dissipation pipe 3 The cooling liquid at room temperature is radiated by the fan or cooling fins, driven by the pump body 6, from the disc-shaped seamless cooling pipe 3 to flow to the guide tube 5 on the second magnetic working medium device 7; at _t2 During the period of time, on the one hand, under the control of the single-chip microcomputer in the drive control system, the pump body 6 stops rotating, and the cooling liquid at room temperature stagnates in the guide tube 5 on the second magnetic working medium device 7; , the single-chip microcomputer in the drive control system controls the magnetic field system 1 on the outside of the second magnetic working medium device 7, so that the magnetic field of the magnetic field system 1 decreases. At this time, the magnetic working medium 7 produces a magnetocaloric effect under the action of the external magnetic field 1, The direction of the magnetic moment becomes disordered (the magnetic entropy increases). At this time, the magnetic working medium 7 absorbs heat from the coolant in the flow guide tube 5 passing through it, and the temperature of the coolant is further reduced through heat exchange; During the time period _t3 , under the control of the single-chip microcomputer in the drive control system, the pump body 6 rotates forward, and the cooled coolant in the guide tube 5 on the second magnetic working medium device 7 is driven by the pump body 6 The second magnetic working medium device 7 flows to the plate-shaped seamless heat-absorbing pipeline 8 place above the heat sink; in the _t4 time period, under the control of the single-chip microcomputer in the drive control system, the pump body 6 stops rotating, and is The cooled coolant absorbs the heat radiated by the heat sink. The temperature of the coolant rises, and the temperature of the heat sink decreases accordingly, even below room temperature. According to actual needs, if necessary, it can be heated at the heat sink. Some cooling grease or heat conduction paste are arranged above the heat sink, below the plate- _shaped seamless heat-absorbing pipe 8, to increase the heat dissipation area and heat dissipation efficiency of the heat sink; Under the control, the pump body 6 is reversed, and the cooling liquid in the disc-shaped seamless heat-absorbing pipe 8 that absorbs the heat radiated by the heat sink is driven by the pump body 6 and flows to the guide that passes through the second magnetic working medium device 7 . Flow tube 5; in the _t6 time period, on the one hand, under the control of the single-chip microcomputer in the drive control system, the pump body 6 stops rotating, and the coolant that absorbs the heat radiated by the heat sink stagnates in the second magnetic field. In the guide tube 5 on the mass device 7, on the other hand, the single-chip microcomputer in the described drive control system controls the magnetic field system 1 on the outside of the second magnetic working medium device 7, so that the magnetic field of the magnetic field system 1 increases. At this time, the magnetic field Under the action of the external magnetic field, the working medium 7 produces a magnetocaloric effect, so that the directions of the magnetic moments are aligned (the magnetic entropy becomes smaller). The heat exchange further raises the temperature of the cooling liquid; in the time period _t7 , under the control of the single-chip microcomputer in the drive control system, the pump body 6 reverses, and the second magnetic working medium device 7 is filled in the guide tube 5 heated coolant in Driven by the pump body 6, the second magnetic working medium device 7 flows to the disc-shaped seamless cooling pipe 3; in the time period _t8 , under the control of the single-chip microcomputer in the drive control system, the pump body 6 stops rotating, The heated cooling liquid radiates outward to release the heat radiated by the heat sink and the second magnetic working medium device 7 to the cooling liquid, and the temperature of the cooling liquid decreases, even down to room temperature. According to actual needs, if necessary, it can be A heat dissipation fin or a heat dissipation fan or a heat dissipation fin and a heat dissipation fan are arranged above the disc-shaped seamless heat dissipation pipe 3 to increase the heat dissipation efficiency of the coolant.

So far, the magnetic cooling and cooling device has completed its work in one cycle. If the temperature of the radiated part reaches its rated operating temperature, it will be located under the disc-shaped seamless heat-absorbing pipe 8, and the temperature control switch on the radiated part will be It will be automatically disconnected, the microcontroller is in standby mode, and the magnetic refrigeration system and heat dissipation system stop working. If the temperature of the part to be radiated still exceeds the temperature control threshold, the magnetic refrigeration heat dissipation device continues to enter the next working cycle. In this way, the magnetic refrigeration and heat dissipation device can realize intelligent temperature control and cooling and heat dissipation adjustment of the radiated parts.

Example 2

In this embodiment, a schematic diagram of the structure and principle of a magnetic refrigeration and heat dissipation device is shown in FIG. 9 , including a magnetic refrigeration system, a heat dissipation system, and a drive control system.

The magnetic refrigeration system includes a magnetic field system 1', a first magnetic working medium device 2', a cooling end and a heating end; the magnetic field system 1' is composed of a pair of electromagnets, and the electromagnets are controlled by the drive control system The single-chip microcomputer drives and controls the electromagnet through the set program to periodically generate the magnetic field required by the magnetic refrigeration system. The magnetic working medium 2' is placed in the magnetic field system 1', and its magnetic moment follows the direction of the magnetic field of the electromagnet. The changes are either neat or messy.

The heat dissipation system is composed of a pump body 6', a disc-shaped seamless heat-dissipating pipe 3', a disc-shaped seamless heat-absorbing pipe 8', a draft tube 5', and a coolant; the pump body 6' is composed of The single-chip microcomputer is periodically driven and controlled by the set program, and the cooling liquid is driven by the pump body 6' to flow in a reciprocating cycle in the heat dissipation pipe 3', the heat-absorbing pipe 8', and the guide pipe 5'. Disc-shaped seamless heat-absorbing tubes 8' are placed above the radiated parts to absorb the heat of the radiated parts and reduce the ambient temperature of the radiated parts; the structural diagram of the first magnetic working medium device 2' passing through the magnetic working medium device 9 2-5 to describe.

The drive control system is composed of a circuit control system composed of a power supply, a single-chip microcomputer, etc.; on the one hand, the single-chip microcomputer controls the periodic change of the magnetic field system 1', and on the other hand drives the cooling liquid to periodically change by controlling the pump body 6'. flow, and it can also coordinate and control the changes of the two according to a certain ratio, so as to ensure that the whole system can realize intelligent circulation cooling and heat dissipation more efficiently.

Preferably, the disc-shaped seamless pipe is fixedly connected at the center through a ring buckle without gap.

Preferably, the shape of the disc-shaped seamless heat dissipation pipe 3' is circular.

Preferably, the shape of the disc-shaped seamless heat-absorbing pipe 8' is square.

Preferably, the cross-sectional shape of the disc-shaped seamless pipe may be circular.

Preferably, a heat dissipation fan and heat dissipation fins are arranged above the disc-shaped seamless heat dissipation pipe 3' to increase the heat dissipation efficiency of the coolant.

Preferably, a number of heat dissipating greases can be arranged above the heat sink part at the heat absorption end and below the disc-shaped seamless heat absorption pipe 8', so as to increase the heat dissipation area of the heat sink part.

Preferably, the number of the magnetic field system 1' and the corresponding magnetic working medium device 2' is set to one according to the actual requirements of the heat sink.

Figure 10 is a schematic diagram of the operation flow of the pump body in a working cycle of Embodiment 2 of a magnetic refrigeration and heat dissipation device described in the present utility model, and Figure 11 is a magnetic working medium of Embodiment 2 of a magnetic refrigeration and heat dissipation device described in the present utility model The schematic diagram of the change of the magnetic flux of the magnetic field system outside the device within a working cycle is shown in the schematic diagram. The working flow diagram of the pump body shown in Figure 10 and the schematic diagram of the magnetic flux change of the magnetic working medium device outside the magnetic working medium device are shown below to briefly describe the magnetic refrigeration and heat dissipation device. Roughly how it works.

Here, the coolant in the disc-shaped seamless heat dissipation pipe 3 is radiated to room temperature by the heat dissipation fan or the heat sink, as the assumed initial state of the system, and the reverse flow of the coolant in the entire system in Figure 9 is used as the pump body 6 'Assumptions of forward rotation, where each character in the figure represents:

n: 6' speed of the pump body, the unit is (r/min), and its working rated speed value is set and adjusted by the single-chip microcomputer in the control system;

T: 6' working cycle of the pump body, the unit is s, and the rated working cycle value is set and adjusted by the single-chip microcomputer in the control system;

T ₁ : The pump body 6' forward rotation working cycle, the unit is s, and its rated working cycle value is set and adjusted by the single-chip microcomputer in the control system;

T ₂ : pump body 6' reverse working cycle, the unit is s, and its rated working cycle value is set and adjusted by the single-chip microcomputer in the control system;

t ₁ -t ₈ : the working time or interval time of the pump body 6' in each stage, the unit is s, and the rated working time value is set and adjusted by the single-chip microcomputer in the control system;

The general working principle of the magnetic refrigeration cooling device is as follows:

Figure 10 is a schematic diagram of the operation flow of the pump body in a working cycle of Embodiment 2 of a magnetic refrigeration and heat dissipation device described in the present utility model, and Figure 11 is a magnetic working medium of Embodiment 2 of a magnetic refrigeration and heat dissipation device described in the present utility model The schematic diagram of the change of the magnetic flux of the magnetic field system outside the device in a working cycle is shown in the following figure: in the time period _t1 , under the control of the single-chip microcomputer in the drive control system, the pump body 6' reverses, and the disc-shaped seamless heat dissipation pipe 3 Driven by the pump body 6', the coolant that is cooled to room temperature by the cooling fan or cooling fins flows from the disc-shaped seamless cooling pipe 3' to the first magnetic working medium device 2' that passes through it. Tube 5'; within the time period _t2 , on the one hand, under the control of the single-chip microcomputer in the drive control system, the pump body 6' stops rotating, and the cooling liquid at room temperature stagnates on the first magnetic working medium device 2' In the guide tube 5, on the other hand, the single-chip microcomputer in the drive control system controls the magnetic field system 1' outside the first magnetic working medium device 2', so that the magnetic field of the magnetic field system 1' decreases. At this time, the magnetic working medium Under the action of the external magnetic field, the mass 2' produces a magneto-caloric effect, which makes the direction of the magnetic moment into a disordered state (the magnetic entropy becomes larger), and at this time the magnetic working medium 2' passes through the coolant in the flow guide tube 5' Absorb heat, and further reduce the temperature of the coolant through heat exchange; in the time period _t3 , under the control of the single-chip microcomputer in the drive control system, the pump body 6' reverses, and the first magnetic working medium device 2' guides The cooled coolant in the flow tube 5' is driven by the pump body 6' and flows from the first magnetic working medium device 2' to the disc-shaped seamless heat-absorbing pipe 8' above the heat sink; during the time period _t4 Inside, under the control of the single-chip microcomputer in the drive control system, the pump body 6' stops rotating, the cooled coolant absorbs the heat radiated by the heat sink, the temperature of the coolant rises, and the temperature of the heat sink decreases accordingly , or even below room temperature, according to actual needs, if necessary, a number of thermal grease or thermal paste can be placed above the heat sink at the end of the heat sink and below the disc-shaped seamless heat sink pipe 8' to increase the size of the heat sink The heat dissipation area and heat dissipation efficiency; in the _t5 time period, under the control of the single-chip microcomputer in the drive control system, the pump body 6' rotates forward, and the heat absorbed in the disc-shaped seamless heat-absorbing pipe 8' is radiated by the heat-dissipating parts The cooling liquid of the heat flows to the guide tube 5' that passes through the first magnetic working medium device 2' under the drive of the pump body _6' ; Under the control of the pump body 6', the pump body 6' stops rotating, and the coolant that absorbs the heat radiated by the heat sink stagnates in the guide tube 5' on the first magnetic working medium device 7'. On the other hand, the drive control The single-chip microcomputer in the system controls the magnetic field system 1' outside the first magnetic working medium device 2' to increase the magnetic field of the magnetic field system 1'. The direction of the moment is aligned (the magnetic entropy becomes smaller). At this time, the magnetic working medium 2' releases heat to the cooling liquid in the shape guide tube 5' passing through it, and the temperature of the cooling liquid is further increased through heat exchange; During the t ₇ time period, in the Under the control of the single-chip microcomputer in the drive control system, the pump body 6' rotates forward, and the coolant heated in the guide tube 5' on the first magnetic working medium device 2' is driven by the first magnetic working medium The device 2' flows to the disc-shaped seamless heat dissipation pipe 3'; within the time period _t8 , under the control of the single-chip microcomputer in the drive control system, the pump body 6' stops rotating, and the heated cooling liquid is radiated and released The heat radiated to the cooling liquid by the heat sink and the first magnetic working medium device 2' will lower the temperature of the cooling liquid, even to room temperature. 'A heat dissipation fin or a heat dissipation fan or a heat dissipation fin and a heat dissipation fan are arranged on the top to increase the heat dissipation efficiency of the coolant. So far, the magnetic refrigeration and heat dissipation device has completed its work in one cycle, and in the next working cycle, the magnetic refrigeration system and heat dissipation system are still under the control of the single-chip microcomputer in the drive control system to periodically complete the cooling and heat dissipation work of the radiated parts .

The difference from Embodiment 1 is that there is no intelligent temperature control switch in this embodiment, and the magnetic cooling and heat dissipation device directly enters and is always in the process of cooling and cooling after the heat sink is turned on. This embodiment is suitable for those The heat dissipation part has a large amount of heat dissipation and the heat dissipation efficiency is low.

In the utility model, the above-mentioned structure can be reasonably designed and selected according to the structural characteristics of the heat-dissipated part and the use environment of the magnetic cooling and heat-dissipating device.

The above descriptions are only preferred implementations of the present utility model, and it should be understood that the present utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments , and can be modified within the scope of the ideas described herein by the teachings above or by skill or knowledge in the relevant art. However, changes and changes made by those skilled in the art do not depart from the spirit and scope of the utility model, and should all be within the protection scope of the appended claims of the utility model.

Claims (10)

1. a kind of magnetic refrigeration radiating device, which is characterized in that including magnetic refrigerating system, cooling system and driving control system；

The magnetic refrigerating system includes field system, magnetic working medium device, refrigeration end and heating end；The field system is by several electricity Magnet forms, and the electromagnet controls electromagnet by the microcontroller in the driving control system by set driven by program Magnetic field needed for magnetic refrigerating system is periodically generated, the magnetic working medium is placed in the field system, and its magnetic moment is with electromagnet The variation of magnetic direction and or neat or wadding disorderly；

The cooling system is by the pump housing, dish type is seamless hot channel, dish type is seamless heat absorbing conduit, diversion pipe, coolant group Into；The pump housing is by by set routines periodically the drive control of the microcontroller in driving control system, the cooling Liquid cycle reciprocation cycle in hot channel, heat absorbing conduit, diversion pipe under pump housing driving flows, the seamless heat absorption of dish type Pipeline is placed in by above radiating piece, is absorbed by radiating piece heat, is reduced by radiating piece environment temperature；

The circuit control system that the driving control system is then made of power supply, intelligent temp-controlled switch, microcontroller forms；Institute Magnetic refrigerating system and cooling system can be automatically opened or closed according to the temperature threshold that itself is set by stating intelligent temp-controlled switch, institute Stating microcontroller, on the one hand control field system periodically changes, on the other hand by the way that the pump housing is controlled to drive coolant periodic Flowing, and it can also coordinate the situation of change of both control according to a certain percentage, to ensure the more efficient realization of whole system Intelligent circulation refrigeration radiating.

2. a kind of magnetic refrigeration radiating device according to claim 1, it is characterised in that：The magnetic working medium device is non-ferric Magnetic material honeycomb cylindrical barrel body, the magnetic working medium are magnetic fluid, and the magnetic fluid includes nano magnetic ferrite body particle, stone Oily ether magnetic liquid carrier fluid and single Tryfac 5573 surfactant, magnetic fluid are full of in honeycomb cylindrical barrel body.

3. a kind of magnetic refrigeration radiating device according to claim 1, it is characterised in that：Coolant is through-flow in diversion pipe, The coolant diversion pipe, which first passes around, to be distributed in the honeycomb hole of honeycomb cylindrical barrel body magnetic working medium device, then is justified in honeycomb The outer surface spiral winding distribution of cylindricality cylindrical body magnetic working medium device.

4. a kind of magnetic refrigeration radiating device according to claim 1, it is characterised in that：The seamless pipeline of dish type is in It is fixedly connected at the heart by the way that ring-type buckle is seamless；The seamless pipeline of dish type and annular buckle or integral structure.

5. a kind of magnetic refrigeration radiating device according to claim 1, it is characterised in that：The seamless pipeline shape of dish type Can be according to different by the variation of radiating piece exact shape, outer shape can be circular, ellipse or polygon.

6. a kind of magnetic refrigeration radiating device according to claim 1, it is characterised in that：The seamless conduit cross-sectional of dish type Face shape can be circular, ellipse or polygon.

7. a kind of magnetic refrigeration radiating device according to claim 1, it is characterised in that：The seamless hot channel of dish type Top can set radiating fin either radiator fan or radiating fin and radiator fan, to increase the heat dissipation of cooling agent effect Rate.

8. a kind of magnetic refrigeration radiating device according to claim 1, it is characterised in that：Heat absorbing end is by radiating piece top, disk Shape is seamless, and heat absorbing conduit lower section can set several heat dissipation fat or heat-conducting creams, to increase by the heat dissipation area of radiating piece.

9. a kind of magnetic refrigeration radiating device according to claim 1, it is characterised in that：The temperature detect switch (TDS), which is fixed in, to be dissipated Above warmware, dish type is seamless, and heat absorbing conduit lower section is detected in real time with feedback by the temperature of radiating piece.

10. a kind of magnetic refrigeration radiating device according to claim 1, it is characterised in that：The field system with it is corresponding Magnetic working medium device quantity can be arranged to one or more according to by the actual demand of radiating piece.