Metal fluid enhanced heat exchange device based on local magnetic field

Abstract

The utility model relates to the technical field of heat transfer, in particular to a metal fluid enhanced heat exchange device based on a local magnetic field. The utility model provides a metal fluid enhanced heat exchange device based on a local magnetic field. The metal fluid enhanced heat exchange device comprises a magnet, metal fluid, a first flow channel opening, a metal fluid flow channel and a second flow channel opening. Wherein one end of the metal fluid flow channel is communicated with the first flow channel opening, at least one magnet containing groove is formed in the outer side face of the metal fluid flow channel, the opening shape of the magnet containing groove is matched with the shape structure of a magnet, the magnet containing groove is used for containing the magnet, and the other end of the metal fluid flow channel is communicated with the second flow channel opening. Metal fluid is injected from the first flow channel opening and discharged from the second flow channel opening. The local magnetic field is used for controlling the metal fluid to generate the Karman vortex street to improve the convection effect, and then the local heat exchange performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat transfer, in particular to a metal fluid enhanced heat exchange device based on a local magnetic field. Background Art

[0002] In the fields of industry and science and technology, enhanced heat transfer technology is an important topic in many projects, such as petrochemicals, energy production, air conditioning systems, automobile engines, etc. The traditional heat exchanger working fluid is water, which has the advantages of being cheap, environmentally friendly, safe, and having high specific heat capacity, but it still has its shortcomings, such as: low thermal conductivity (0.6 W / m·K) and a low operating temperature range. The commonly used methods in heat exchangers are to increase the contact area (tubular heat exchangers, plate heat exchangers, etc.), wall roughness, etc., which will increase the pressure loss and thus reduce the overall heat transfer efficiency. Therefore, there is an urgent need for a metal fluid enhanced heat exchange device based on a local magnetic field to enhance the heat transfer efficiency of the heat exchanger. Utility Model Content

[0003] In view of the deficiencies of the prior art and the needs of practical applications, the utility model provides a metal fluid enhanced heat exchange device based on a local magnetic field, aiming to enhance the heat exchange efficiency of a heat exchanger.

[0004] The metal fluid enhanced heat exchange device based on local magnetic field provided by the utility model includes: a magnet, a metal fluid, a first flow channel opening, a metal fluid flow channel and a second flow channel opening; wherein, one end of the metal fluid flow channel is connected to the first flow channel opening, and at least one magnet placement groove is opened on the outer surface of the metal fluid flow channel, and the opening shape of the magnet placement groove is adapted to the shape structure of the magnet, and the magnet placement groove is used to place the magnet, and the other end of the metal fluid flow channel is connected to the second flow channel opening, and the metal fluid is injected from the first flow channel opening and discharged from the second flow channel opening.

[0005] The metal fluid enhanced heat exchange device based on local magnetic field provided by the utility model uses metal fluid as working fluid to improve heat exchange performance; and combined with the effect of local magnetic field, the Karman vortex street generated after the metal fluid flows through the magnet is used to enhance the convection effect, thereby further improving the local heat exchange performance.

[0006] Optionally, the metal fluid flow channel is a box-shaped metal fluid flow channel; a pair of outer sides of the box-shaped metal fluid flow channel are provided with the magnet placement grooves, and the other outer side of the box-shaped metal fluid flow channel is in contact with the heat source. This option adopts a box-shaped metal fluid flow channel to improve the capacity of the metal fluid.

[0007] Optionally, a plurality of magnet placement slots are arranged in an array on the outer side of the box-shaped metal fluid flow channel. This option provides adjustable placement positions for the magnets through the array-arranged magnet placement slots, thereby flexibly generating local magnetic fields at different positions.

[0008] Optionally, a magnet placement slot cover is further included, and the magnet placement slot cover is used to seal the magnet placement slot. This option limits the magnet inside the magnet placement slot through the magnet placement slot cover, ensuring the stability of the metal fluid enhanced heat exchange device based on the local magnetic field during use.

[0009] Optionally, the metal fluid includes but is not limited to liquid lead, liquid sodium, liquid lithium, liquid GaInSn or molten salt. This option can select metal fluids such as liquid lead, liquid sodium, liquid lithium or liquid GaInSn according to specific applications, which increases the application scope of the metal fluid enhanced heat exchange device based on the local magnetic field.

[0010] Optionally, the magnet includes but is not limited to a permanent magnet. The permanent magnet provided by the present invention has a stable magnetic field, can maintain the strength of the local magnetic field for a long time, and improves the reliability of the device.

[0011] Optionally, the magnet is in the shape of a cuboid. A cuboid magnet is easy to obtain, and a rectangular magnet placement slot for placing the magnet is also easier to prepare. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of the structure of a metal fluid enhanced heat exchange device based on a local magnetic field provided by an embodiment of the utility model;

[0013] Figure 2 A schematic diagram of the arrangement of multiple magnet placement slots in a metal fluid enhanced heat exchange device based on a local magnetic field provided by an embodiment of the utility model;

[0014] Figure 3 A schematic diagram of the placement of magnets in a metal fluid enhanced heat exchange device based on a local magnetic field provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0015] The specific embodiments of the present invention will be described in detail below. It should be noted that the embodiments described here are only for illustration and are not intended to limit the present invention. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is obvious to those of ordinary skill in the art that these specific details do not have to be adopted to implement the present invention. In other examples, in order to avoid confusing the present invention, known circuits, software or methods are not specifically described.

[0016] Throughout the specification, references to "one embodiment", "an embodiment", "an example" or "an example" mean that a particular feature, structure or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "in one embodiment", "in an embodiment", "an example" or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. In addition, particular features, structures or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it should be understood by those of ordinary skill in the art that the illustrations provided herein are for illustrative purposes and that the illustrations are not necessarily drawn to scale.

[0017] In one embodiment, see Figure 1 , Figure 1 This is a schematic diagram of the structure of a metal fluid enhanced heat exchange device based on a local magnetic field provided by an embodiment of the utility model. Figure 1 As shown, the metal fluid enhanced heat exchange device based on local magnetic field provided by the utility model includes: a magnet 22, a metal fluid, a first flow channel opening 1, a metal fluid flow channel 2 and a second flow channel opening 3.

[0018] In this embodiment, one end of the metal fluid flow channel 2 is connected to the first flow channel opening 1, and at least one magnet placement groove is provided on the outer side surface 21 of the metal fluid flow channel 2. The opening shape of the magnet 22 placement groove is adapted to the shape structure of the magnet, and the magnet placement groove is used to place the magnet 22. The other end of the metal fluid flow channel 2 is connected to the second flow channel opening 3, and the metal fluid is injected from the first flow channel opening 1 and discharged from the second flow channel opening 3. Specifically, the first flow channel opening 1 is a low-temperature metal fluid inlet, and the second flow channel opening 3 is a high-temperature metal fluid outlet.

[0019] Furthermore, the magnet 22 includes but is not limited to a permanent magnet, and the metal fluid includes but is not limited to liquid lead, liquid sodium, liquid lithium, liquid GaInSn or molten salt. In this embodiment, the magnet 22 is a permanent magnet, and its shape and structure are as follows: Figure 2 As shown, it is a rectangular parallelepiped; the metal fluid is liquid GaInSn. When the metal fluid flows through the local magnetic field with high magnetic intensity formed by the permanent magnet, a phenomenon similar to the Karman vortex street will occur, thereby improving the local convection heat transfer performance. Further, in a specific embodiment, see Figures 1 to 3 The metal fluid flow channel 2 is a box-type metal fluid flow channel; the magnet placement grooves are opened on a pair of outer side surfaces 21 of the box-type metal fluid flow channel 2, and the other outer side surface of the box-type metal fluid flow channel 2 is in contact with the heat source.

[0020] In this embodiment, a plurality of magnet placement slots are provided in the metal fluid enhanced heat exchange device based on local magnetic field, and the plurality of magnet placement slots are arranged in an array on the outer side of the box-shaped metal fluid flow channel 2. Any magnet placement slot can be correspondingly placed with an adapted magnet 22 for generating a local magnetic field. It is easy to understand that the number and position of the magnet placement slots for placing the magnets 22 can be flexibly adjusted according to the actual needs of the local magnetic field.

[0021] In another embodiment, in order to ensure the stability of the metal fluid enhanced heat exchange device based on the local magnetic field during use, a magnet placement slot cover is provided outside the magnet placement slot where the magnet is placed, and the magnet placement slot cover is used to seal the magnet placement slot.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A metal fluid enhanced heat exchange device based on local magnetic field, characterized in that: include: A magnet, a metal fluid, a first flow channel opening, a metal fluid flow channel, and a second flow channel opening; Among them, one end of the metal fluid flow channel is connected to the first flow channel opening, and at least one magnet placement groove is opened on the outer surface of the metal fluid flow channel. The opening shape of the magnet placement groove is adapted to the shape structure of the magnet, and the magnet placement groove is used to place the magnet. The other end of the metal fluid flow channel is connected to the second flow channel opening, and the metal fluid is injected from the first flow channel opening and discharged from the second flow channel opening.

2. The metal fluid enhanced heat exchange device based on local magnetic field according to claim 1, characterized in that: The metal fluid flow channel is a box-shaped metal fluid flow channel; The magnet placement grooves are provided on a pair of outer sides of the box-shaped metal fluid flow channel, and the other outer side of the box-shaped metal fluid flow channel is in contact with the heat source.

3. The metal fluid enhanced heat exchange device based on local magnetic field according to claim 2, characterized in that: A plurality of magnet placement grooves are arranged in an array on the outer side surface of the box-shaped metal fluid flow channel.

4. The metal fluid enhanced heat exchange device based on local magnetic field according to any one of claims 1 to 3, characterized in that: It also includes a magnet placement slot cover plate, and the magnet placement slot cover plate is used to seal the magnet placement slot.

5. The metal fluid enhanced heat exchange device based on local magnetic field according to any one of claims 1 to 3, characterized in that: The metal fluid includes but is not limited to liquid lead, liquid sodium, liquid lithium or liquid GaInSn.

6. The metal fluid enhanced heat exchange device based on local magnetic field according to any one of claims 1 to 3, characterized in that: The magnet includes but is not limited to a permanent magnet.

7. The metal fluid enhanced heat exchange device based on local magnetic field according to any one of claims 1 to 3, characterized in that: The magnet is in the shape of a cuboid.

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