U-shaped heat exchanger, u-shaped tube and heat dissipation method for conductive paste cooling

Abstract

The present application belongs to the general heat exchange technical field, and particularly relates to a heat exchange device for fixing a tubular channel assembly of two heat exchange media, and particularly relates to a U-shaped heat exchanger for cooling conductive paste, a U-shaped tube and a heat dissipation method. The U-shaped heat exchanger comprises a support for fixing a plurality of U-shaped tubes, the U-shaped tubes conveying conductive paste to be cooled, and a heat exchange medium flowing outside the U-shaped tubes; the inner wall of the U-shaped tube is coated with an insulating coating; the inner wall of the U-shaped tube is provided with a plurality of conductive assemblies; when the temperature of the conductive paste in the U-shaped tube exceeds the deformation temperature of the conductive assembly, the conductive assembly is deformed to protrude from the inner wall of the U-shaped tube, the metal part in the conductive assembly contacts the insulating coating of the inner wall of the U-shaped tube, the insulating coating of the inner wall of the U-shaped tube loses the electrostatic adsorption force, and thus the electrostatic adsorption force in the U-shaped tube is eliminated, the particles adsorbed on the inner wall of the U-shaped tube are avoided, and the heat exchange efficiency is ensured.

Description

Technical Field

[0001] This invention belongs to the field of general heat exchange technology, specifically relating to a heat exchange device for a fixed tubular channel assembly for two heat exchange media, and more particularly to a U-shaped heat exchanger, U-shaped tube, and heat dissipation method for cooling conductive slurry. Background Technology

[0002] When conductive slurry is cooled using a heat exchanger, a deposit layer will form inside the tube wall due to electrostatic adsorption. This deposit layer increases thermal resistance, hinders heat transfer, and consequently reduces heat exchange efficiency.

[0003] Therefore, due to the technical problem of reduced heat exchange efficiency caused by electrostatic adsorption of particles inside the pipeline, it is necessary to design a U-shaped heat exchanger, U-shaped tube, and heat dissipation method for cooling conductive slurry.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0005] This disclosure provides at least one U-shaped heat exchanger, U-shaped tube, and heat dissipation method for cooling conductive paste.

[0006] In a first aspect, embodiments of this disclosure provide a U-shaped heat exchanger, comprising:

[0007] A support is used to fix several U-shaped tubes, in which conductive slurry to be cooled is conveyed, and heat exchange medium flows outside the U-shaped tubes.

[0008] The inner wall of the U-shaped tube is coated with an insulating coating.

[0009] The inner wall of the U-shaped tube is provided with several conductive components;

[0010] When the temperature of the conductive slurry inside the U-tube exceeds the deformation temperature of the conductive component, the conductive component deforms, causing it to bulge out of the inner wall of the U-tube. The metal parts in the conductive component then contact the insulating coating on the inner wall of the U-tube, causing the insulating coating to lose its electrostatic adsorption force.

[0011] In one alternative embodiment, the conductive component includes: a shape memory metal and a metal element;

[0012] The shape memory metal is disposed in the inner wall of the U-shaped tube;

[0013] The metal component is disposed on the shape memory metal, and the portion of the metal component away from the shape memory metal is coated with an insulating coating.

[0014] When the temperature of the conductive paste inside the U-tube exceeds the deformation temperature of the shape memory metal, the shape memory metal deforms, causing the part of the metal part without an insulating coating to protrude from the inner wall of the U-tube and come into contact with the insulating coating on the inner wall of the U-tube, causing the insulating coating on the inner wall of the U-tube to lose its electrostatic adsorption force.

[0015] In one alternative embodiment, the U-shaped tube includes: a bend and a pair of parallel straight tubes;

[0016] The inlet of the bent pipe is connected to one of the straight pipes, and the outlet of the bent pipe is connected to the other straight pipe.

[0017] The inner wall of the straight pipe corresponding to the liquid inlet of the bent pipe is provided with several grooves at equal intervals in the circumference, and the grooves are close to the liquid inlet of the bent pipe.

[0018] The groove corresponds to the conductive component;

[0019] The shape memory metal is disposed in the groove.

[0020] In one alternative embodiment, when the temperature of the conductive paste inside the U-tube exceeds the deformation temperature of the shape memory metal, the shape memory metal deforms, causing the portion of the metal part without an insulating coating to protrude from the inner wall of the U-tube. At this time, the flow rate of the conductive paste increases when it flows through the metal part.

[0021] In one alternative embodiment, the U-shaped heat exchanger further includes a housing;

[0022] The U-shaped tube is fixed inside the housing by a bracket;

[0023] The housing is provided with several baffles to adjust the flow direction of the heat medium;

[0024] The shell is filled with a heat exchange medium;

[0025] The shell is provided with an inlet and an outlet, so that the heat exchange medium is introduced into the shell through the inlet and flows out of the shell through the outlet, thereby allowing the heat exchange medium to flow.

[0026] Secondly, this disclosure also provides a U-shaped tube used in the above-mentioned U-shaped heat exchanger, wherein the inner wall of the U-shaped tube is coated with an insulating coating;

[0027] The inner wall of the U-shaped tube is provided with several conductive components;

[0028] When the temperature of the conductive slurry inside the U-tube exceeds the deformation temperature of the conductive component, the conductive component deforms, causing it to bulge out of the inner wall of the U-tube. The metal parts in the conductive component then contact the insulating coating on the inner wall of the U-tube, causing the insulating coating to lose its electrostatic adsorption force.

[0029] In one alternative embodiment, the conductive component includes: a shape memory metal and a metal element;

[0030] The shape memory metal is disposed in the inner wall of the U-shaped tube;

[0031] The metal component is disposed on the shape memory metal, and the portion of the metal component away from the shape memory metal is coated with an insulating coating.

[0032] When the temperature of the conductive paste inside the U-tube exceeds the deformation temperature of the shape memory metal, the shape memory metal deforms, causing the part of the metal part without an insulating coating to protrude from the inner wall of the U-tube and come into contact with the insulating coating on the inner wall of the U-tube, causing the insulating coating on the inner wall of the U-tube to lose its electrostatic adsorption force.

[0033] In one alternative embodiment, the U-shaped tube includes: a bend and a pair of parallel straight tubes;

[0034] The inlet of the bent pipe is connected to one of the straight pipes, and the outlet of the bent pipe is connected to the other straight pipe.

[0035] The inner wall of the straight pipe corresponding to the liquid inlet of the bent pipe is provided with several grooves at equal intervals in the circumference, and the grooves are close to the liquid inlet of the bent pipe.

[0036] The groove corresponds to the conductive component;

[0037] The shape memory metal is disposed in the groove.

[0038] In one alternative embodiment, when the temperature of the conductive paste inside the U-tube exceeds the deformation temperature of the shape memory metal, the shape memory metal deforms, causing the portion of the metal part without an insulating coating to protrude from the inner wall of the U-tube. At this time, the flow rate of the conductive paste increases when it flows through the metal part.

[0039] Thirdly, this disclosure also provides a heat dissipation method using the above-described U-shaped heat exchanger, comprising:

[0040] The conductive slurry to be cooled is conveyed through a U-shaped tube;

[0041] The conductive slurry to be cooled is cooled by the heat exchange medium outside the U-tube.

[0042] When the temperature of the conductive slurry inside the U-tube exceeds the deformation temperature of the conductive component, the conductive component deforms, causing it to bulge out of the inner wall of the U-tube. The metal parts in the conductive component then contact the insulating coating on the inner wall of the U-tube, causing the insulating coating to lose its electrostatic adsorption force.

[0043] The beneficial effects of this invention are as follows: This U-shaped heat exchanger includes: a support for fixing several U-shaped tubes, wherein a conductive slurry to be cooled is conveyed inside the U-shaped tubes, and a heat exchange medium flows outside the U-shaped tubes; the inner wall of the U-shaped tubes is coated with an insulating coating; several conductive components are disposed on the inner wall of the U-shaped tubes; when the temperature of the conductive slurry inside the U-shaped tubes exceeds the deformation temperature of the conductive components, the conductive components deform, causing the conductive components to protrude from the inner wall of the U-shaped tubes, and the metal parts in the conductive components contact the insulating coating on the inner wall of the U-shaped tubes, causing the insulating coating on the inner wall of the U-shaped tubes to lose its electrostatic adsorption force, thereby eliminating the electrostatic adsorption force inside the U-shaped tubes, preventing particles from adsorbing onto the inner wall of the U-shaped tubes, and ensuring heat exchange efficiency.

[0044] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0045] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0046] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of the structure of a U-shaped heat exchanger provided in an embodiment of the present disclosure;

[0048] Figure 2 This is a schematic diagram of the internal structure of a U-shaped heat exchanger provided in an embodiment of the present disclosure;

[0049] Figure 3 A cross-sectional view of a U-shaped tube provided in an embodiment of this disclosure;

[0050] Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle.

[0051] In the picture:

[0052] 1 is a U-shaped pipe, 11 is a bent pipe, 12 is a straight pipe, and 13 is a groove;

[0053] 2 is a conductive component, 21 is a shape memory metal, and 22 is a metal part;

[0054] 3 is the shell, 31 is the inlet, 32 is the outlet, 33 is the baffle, and 34 is the bracket. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0056] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0057] Conductive pastes typically contain metal particles (such as silver and copper) and organic or inorganic binders. These components may undergo electrochemical reactions with the metal materials used in the pipes of heat exchangers. In related technologies, the heat exchange tubes of heat exchangers are usually made of metal, and there is a potential difference between different metal materials. Therefore, when the conductive paste comes into direct contact with the metal tube wall, a galvanic cell may be formed, leading to electrochemical corrosion. To address this, related technologies coat the inner wall of the heat exchange tube with an insulating coating to prevent the conductive paste from coming into direct contact with the metal tube wall.

[0058] However, the inventors discovered that the presence of the insulating coating prevents the release of static electricity generated during slurry transport due to friction with the pipe wall, leading to electrostatic adsorption. When electrostatic adsorption occurs, the metal particles adsorbed on the pipe wall form a deposit layer on the heat exchanger surface. The presence of this deposit layer effectively increases the wall thickness of the heat exchange tube, increasing thermal resistance and hindering heat transfer. This, in turn, leads to a decrease in heat exchange efficiency.

[0059] The inventors also discovered that in the related technology of graphene electronic conductive paste and automated production process, a silane coupling agent and deionized water are added to mixed paste A, and after mixing, it is added to a heating tank for heating. During the heating process, nitrogen gas is continuously introduced at a flow rate of 50-100 ml / min, and the heating temperature is 60℃-80℃. After being kept at a constant temperature for 30 minutes, it is slowly cooled to room temperature to obtain mixed paste B. This indicates that the temperature of the graphene conductive paste can reach 80℃ after heating and needs to be cooled to room temperature (25℃). However, since the viscosity of the graphene conductive paste is less than 500 mPa·s when the temperature exceeds 80℃, the conductive particles in the low-viscosity conductive paste are uniformly dispersed, with a specific surface area greater than 1000 m² / g and a high concentration of charged particles per unit volume. At high temperatures, the thermal motion of the particles is intense, increasing the probability of collision with the tube wall, and the charge transfer reaches its peak. Therefore, electrostatic discharge needs to be carried out at the beginning of heat exchange and stopped at the end of heat exchange.

[0060] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.

[0061] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0062] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0063] like Figure 3 and Figure 4 As shown, at least one disclosed embodiment provides a U-shaped heat exchanger, comprising: a support 34 for fixing a plurality of U-shaped tubes 1, wherein a conductive slurry to be cooled is conveyed inside the U-shaped tubes 1, and a heat exchange medium flows outside the U-shaped tubes 1; the inner wall of the U-shaped tubes 1 is coated with an insulating coating; a plurality of conductive components 2 are disposed on the inner wall of the U-shaped tubes 1; when the temperature of the conductive slurry inside the U-shaped tubes 1 exceeds the deformation temperature of the conductive components 2, the conductive components 2 deform, causing the conductive components 2 to protrude from the inner wall of the U-shaped tubes 1, and the metal parts 22 in the conductive components 2 contact the insulating coating on the inner wall of the U-shaped tubes 1, causing the insulating coating on the inner wall of the U-shaped tubes 1 to lose its electrostatic adsorption force, thereby eliminating the electrostatic adsorption force inside the U-shaped tubes 1, preventing particles from adsorbing onto the inner wall of the U-shaped tubes 1, and ensuring heat exchange efficiency.

[0064] In this embodiment, a conductive circuit is formed by the metal part 22 in the conductive component 2 contacting the insulating coating on the inner wall of the U-tube 1, discharging the static electricity on the insulating coating on the inner wall of the U-tube 1, causing the insulating coating on the inner wall of the U-tube 1 to lose its electrostatic adsorption force, thereby causing the particles originally adsorbed on the insulating coating to fall off.

[0065] In this embodiment, the metal part 22 is made of a conductive material.

[0066] like Figure 4 As shown, in one optional embodiment, the conductive component 2 includes: a shape memory metal 21 and a metal part 22; the shape memory metal 21 is disposed in the inner wall of the U-tube 1; the metal part 22 is disposed on the shape memory metal 21, and the portion of the metal part 22 away from the shape memory metal 21 is coated with an insulating coating; when the temperature of the conductive paste inside the U-tube 1 exceeds the deformation temperature of the shape memory metal 21, the shape memory metal 21 deforms, causing the portion of the metal part 22 without the insulating coating to protrude from the inner wall of the U-tube 1 and contact the insulating coating on the inner wall of the U-tube 1, causing the insulating coating on the inner wall of the U-tube 1 to lose its electrostatic adsorption force.

[0067] In this embodiment, the shape memory metal 21 can be made of Ti-Al-Cr alloy, which can deform and extend at 60-80℃ and retract below this temperature. Moreover, this period of time is much shorter than the overall heat exchange time, and the metal strip stays in the heat exchange tube for a short time, thus avoiding electrochemical corrosion.

[0068] In this embodiment, when the temperature of the conductive paste drops, the shape memory metal 21 will recover its deformation, causing the metal part 22 to retract back into the corresponding groove 13, thus avoiding prolonged contact between the metal part 22 and the conductive paste and preventing electrochemical corrosion.

[0069] like Figure 3 As shown, in an optional embodiment, the U-shaped tube 1 includes: a bent tube 11 and a pair of parallel straight tubes 12; the inlet of the bent tube 11 is connected to one of the straight tubes 12, and the outlet of the bent tube 11 is connected to the other straight tube 12; a plurality of grooves 13 are equidistantly formed on the inner wall of the straight tube 12 corresponding to the inlet of the bent tube 11, and the grooves 13 are close to the inlet of the bent tube 11; the grooves 13 correspond to the conductive component 2; and the shape memory metal 21 is disposed in the grooves 13.

[0070] In this embodiment, the side with the smaller area of ​​the shape memory metal 21 can be connected to the inner wall of the groove 13, and the other sides of the shape memory metal 21 are slidably connected to the inner wall of the groove 13, so that when the shape memory metal 21 is deformed, the metal part 22 can be pushed out of the groove 13.

[0071] In this embodiment, when the shape memory metal 21 does not deform, both the shape memory metal 21 and the metal part 22 are in the groove 13. The side wall of the metal part 22 is in contact with the inner side wall of the groove 13. At this time, the side of the metal part 22 away from the shape memory metal 21 is on the same arc surface as the inner wall of the straight tube 12, that is, the metal part 22 does not protrude from the groove 13. At this time, the conductive paste in the U-shaped tube 1 contacts the insulating coating applied to the surface of the metal part 22. Only when the shape memory metal 21 deforms will the metal part 22 be driven to protrude from the corresponding groove 13 and enter the straight tube 12. The part of the metal part 22 without the insulating coating contacts the insulating coating applied to the inner wall of the straight tube 12 and the bent tube 11, thereby removing static electricity.

[0072] In one alternative embodiment, when the temperature of the conductive paste inside the U-tube 1 exceeds the deformation temperature of the shape memory metal 21, the shape memory metal 21 deforms, causing the portion of the metal part 22 without an insulating coating to protrude from the inner wall of the U-tube 1. At this time, the flow rate of the conductive paste increases when it flows through the metal part 22.

[0073] In this embodiment, since the metal part 22 extends out and partially blocks the flow path of the conductive slurry in the original straight pipe 12, the original flow channel diameter is shortened, and the flow velocity at this point is increased. The high flow velocity has a more obvious impact on the particles that were previously electrostatically adsorbed, helping them to fall off. Although the high flow velocity will increase the degree of friction at this point, since this is a metal conductor, even if more static electricity is generated, it can be discharged.

[0074] In this embodiment, the conductive paste flows in the following direction: Figure 3 As shown in F.

[0075] like Figure 1 and Figure 2 As shown, in one optional embodiment, the U-shaped heat exchanger further includes: a housing 3; the U-shaped tube 1 is fixed inside the housing 3 by a bracket 34; a plurality of baffles 33 are provided inside the housing 3 to adjust the flow direction of the heat medium; the housing 3 is filled with a heat exchange medium; the housing 3 is provided with an inlet 31 and an outlet 32 ​​to allow the heat exchange medium to be introduced into the housing 3 through the inlet 31 and to flow out of the housing 3 through the outlet 32.

[0076] In this embodiment, the heat exchange medium inside the housing 3 flows through the inlet 31 and outlet 32, which can better dissipate heat from the conductive slurry.

[0077] At least one other disclosed embodiment also provides a U-shaped tube 1 used in the above-mentioned U-shaped heat exchanger, wherein the inner wall of the U-shaped tube 1 is coated with an insulating coating; a plurality of conductive components 2 are provided on the inner wall of the U-shaped tube 1; when the temperature of the conductive slurry inside the U-shaped tube 1 exceeds the deformation temperature of the conductive component 2, the conductive component 2 deforms, causing the conductive component 2 to protrude from the inner wall of the U-shaped tube 1, and the metal part 22 in the conductive component 2 contacts the insulating coating on the inner wall of the U-shaped tube 1, causing the insulating coating on the inner wall of the U-shaped tube 1 to lose its electrostatic adsorption force.

[0078] In one optional embodiment, the conductive component 2 includes: a shape memory metal 21 and a metal part 22; the shape memory metal 21 is disposed in the inner wall of the U-tube 1; the metal part 22 is disposed on the shape memory metal 21, and the portion of the metal part 22 away from the shape memory metal 21 is coated with an insulating coating; when the temperature of the conductive paste inside the U-tube 1 exceeds the deformation temperature of the shape memory metal 21, the shape memory metal 21 deforms, causing the portion of the metal part 22 without the insulating coating to protrude from the inner wall of the U-tube 1 and contact the insulating coating on the inner wall of the U-tube 1, causing the insulating coating on the inner wall of the U-tube 1 to lose its electrostatic adsorption force.

[0079] In one optional embodiment, the U-shaped tube 1 includes: a bent tube 11 and a pair of parallel straight tubes 12; the inlet of the bent tube 11 is connected to one of the straight tubes 12, and the outlet of the bent tube 11 is connected to the other straight tube 12; a plurality of grooves 13 are equidistantly formed on the inner wall of the straight tube 12 corresponding to the inlet of the bent tube 11, and the grooves 13 are close to the inlet of the bent tube 11; the grooves 13 correspond to the conductive component 2; and the shape memory metal 21 is disposed in the grooves 13.

[0080] In one alternative embodiment, when the temperature of the conductive slurry inside the U-tube 1 exceeds the deformation temperature of the shape memory metal 21, the shape memory metal 21 deforms, causing the portion of the metal part 22 without an insulating coating to protrude from the inner wall of the U-tube 1. At this time, the flow rate of the conductive slurry increases as it flows through the metal part 22, impacting the particles attached to the inner wall of the bend 11.

[0081] At least one other disclosed embodiment also provides a heat dissipation method using the above-described U-shaped heat exchanger, comprising: conveying a conductive slurry to be cooled through a U-shaped tube 1; cooling the conductive slurry to be cooled through a heat exchange medium outside the U-shaped tube 1; when the temperature of the conductive slurry inside the U-shaped tube 1 exceeds the deformation temperature of the conductive component 2, the conductive component 2 deforms, causing the conductive component 2 to protrude from the inner wall of the U-shaped tube 1, and the metal part 22 in the conductive component 2 contacts the insulating coating on the inner wall of the U-shaped tube 1, causing the insulating coating on the inner wall of the U-shaped tube 1 to lose its electrostatic adsorption force.

[0082] In summary, this U-shaped heat exchanger includes: a support 34 for fixing several U-shaped tubes 1, wherein a conductive slurry to be cooled is conveyed inside the U-shaped tubes 1, and a heat exchange medium flows outside the U-shaped tubes 1; the inner wall of the U-shaped tubes 1 is coated with an insulating coating; several conductive components 2 are disposed on the inner wall of the U-shaped tubes 1; when the temperature of the conductive slurry inside the U-shaped tubes 1 exceeds the deformation temperature of the conductive components 2, the conductive components 2 deform, causing the conductive components 2 to protrude from the inner wall of the U-shaped tubes 1, and the metal parts 22 in the conductive components 2 contact the insulating coating on the inner wall of the U-shaped tubes 1, causing the insulating coating on the inner wall of the U-shaped tubes 1 to lose its electrostatic adsorption force, thereby eliminating the electrostatic adsorption force inside the U-shaped tubes 1, preventing particles from adsorbing onto the inner wall of the U-shaped tubes 1, and ensuring heat exchange efficiency.

[0083] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0084] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0085] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0086] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A U-shaped heat exchanger, characterized in that, include: A bracket (34) is used to fix several U-shaped tubes (1), wherein a conductive slurry to be cooled is conveyed inside the U-shaped tubes (1), and a heat exchange medium flows outside the U-shaped tubes (1); The inner wall of the U-shaped tube (1) is coated with an insulating coating; The inner wall of the U-shaped tube (1) is provided with several conductive components (2); When the temperature of the conductive paste inside the U-tube (1) exceeds the deformation temperature of the conductive component (2), the conductive component (2) deforms, causing the conductive component (2) to bulge out of the inner wall of the U-tube (1). The metal part (22) in the conductive component (2) contacts the insulating coating on the inner wall of the U-tube (1), causing the insulating coating on the inner wall of the U-tube (1) to lose its electrostatic adsorption force. The conductive component (2) includes: shape memory metal (21) and metal part (22); The shape memory metal (21) is disposed in the inner wall of the U-shaped tube (1); The metal part (22) is disposed on the shape memory metal (21), and the portion of the metal part (22) away from the shape memory metal (21) is coated with an insulating coating; When the temperature of the conductive paste inside the U-tube (1) exceeds the deformation temperature of the shape memory metal (21), the shape memory metal (21) deforms, causing the part of the metal part (22) without an insulating coating to protrude from the inner wall of the U-tube (1) and contact the insulating coating on the inner wall of the U-tube (1), causing the insulating coating on the inner wall of the U-tube (1) to lose its electrostatic adsorption force, and the flow rate of the conductive paste increases when it flows through the metal part (22).

2. The U-shaped heat exchanger as described in claim 1, characterized in that: The U-shaped tube (1) includes: a bend (11) and a pair of parallel straight tubes (12); The inlet of the bent pipe (11) is connected to one of the straight pipes (12), and the outlet of the bent pipe (11) is connected to the other straight pipe (12). The inner wall of the straight pipe (12) corresponding to the liquid inlet of the bent pipe (11) is provided with several grooves (13) at equal intervals around the circumference, and the grooves (13) are close to the liquid inlet of the bent pipe (11). The groove (13) corresponds to the conductive component (2); The shape memory metal (21) is disposed in the groove (13).

3. The U-shaped heat exchanger as described in claim 1, characterized in that: The U-shaped heat exchanger also includes: a shell (3); The U-shaped tube (1) is fixed inside the housing (3) by a bracket (34); The housing (3) is provided with several baffles (33) to adjust the flow direction of the heat medium; The shell (3) is filled with a heat exchange medium; The shell (3) is provided with an inlet (31) and an outlet (32) so that the heat exchange medium is introduced into the shell (3) through the inlet (31) and the heat exchange medium flows out of the shell (3) through the outlet (32) so that the heat exchange medium flows.

4. A U-shaped tube, characterized in that: The inner wall of the U-shaped tube (1) is coated with an insulating coating; The inner wall of the U-shaped tube (1) is provided with several conductive components (2); When the temperature of the conductive paste inside the U-tube (1) exceeds the deformation temperature of the conductive component (2), the conductive component (2) deforms, causing the conductive component (2) to bulge out of the inner wall of the U-tube (1). The metal part (22) in the conductive component (2) contacts the insulating coating on the inner wall of the U-tube (1), causing the insulating coating on the inner wall of the U-tube (1) to lose its electrostatic adsorption force. The conductive component (2) includes: shape memory metal (21) and metal part (22); The shape memory metal (21) is disposed in the inner wall of the U-shaped tube (1); The metal part (22) is disposed on the shape memory metal (21), and the portion of the metal part (22) away from the shape memory metal (21) is coated with an insulating coating; When the temperature of the conductive paste inside the U-tube (1) exceeds the deformation temperature of the shape memory metal (21), the shape memory metal (21) deforms, causing the part of the metal part (22) without an insulating coating to protrude from the inner wall of the U-tube (1) and contact the insulating coating on the inner wall of the U-tube (1), causing the insulating coating on the inner wall of the U-tube (1) to lose its electrostatic adsorption force, and at this time, the flow rate of the conductive paste increases when it flows through the metal part (22).

5. The U-shaped tube as described in claim 4, characterized in that: The U-shaped tube (1) includes: a bend (11) and a pair of parallel straight tubes (12); The inlet of the bent pipe (11) is connected to one of the straight pipes (12), and the outlet of the bent pipe (11) is connected to the other straight pipe (12). The inner wall of the straight pipe (12) corresponding to the liquid inlet of the bent pipe (11) is provided with several grooves (13) at equal intervals around the circumference, and the grooves (13) are close to the liquid inlet of the bent pipe (11). The groove (13) corresponds to the conductive component (2); The shape memory metal (21) is disposed in the groove (13).

6. A heat dissipation method using the U-shaped heat exchanger as described in claim 1, characterized in that, include: The conductive slurry to be cooled is conveyed through a U-shaped tube (1); The conductive slurry to be cooled is cooled by the heat exchange medium outside the U-tube (1); When the temperature of the conductive paste inside the U-tube (1) exceeds the deformation temperature of the conductive component (2), the conductive component (2) deforms, causing the conductive component (2) to bulge out of the inner wall of the U-tube (1). The metal part (22) in the conductive component (2) contacts the insulating coating on the inner wall of the U-tube (1), causing the insulating coating on the inner wall of the U-tube (1) to lose its electrostatic adsorption force.

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