Heat pipe radiator and home appliance

Abstract

The application relates to the refrigeration technical field, and discloses a heat pipe radiator, which comprises a heat pipe and a negative Poisson's ratio component. The heat pipe comprises an outer wall. The negative Poisson's ratio component is arranged on the outer wall of the heat pipe and is in heat conduction contact with the heat pipe. When a tensile stress is applied to the negative Poisson's ratio component, the negative Poisson's ratio component is separated from the outer wall of the heat pipe after deformation and performs heat dissipation. When the tensile stress is removed from the negative Poisson's ratio component, the negative Poisson's ratio component is attached to the outer wall of the heat pipe after deformation recovery and absorbs the heat of the heat pipe. The heat pipe radiator disclosed by the application improves the heat dissipation effect of the heat pipe. The application further discloses a household electrical appliance.

Description

Technical Field

[0001] This application relates to the field of refrigeration technology, such as a heat pipe radiator and a household appliance. Background Technology

[0002] In the development of modern electronic devices, home appliances, and other electrical equipment with control boards, the heat dissipation of the control boards has always been a key factor restricting performance improvement. With the continuous increase in chip integration and power consumption on the control boards, how to effectively transfer heat from the control boards to the external environment has become an important challenge in scientific research and engineering.

[0003] Heat pipe radiators, as highly efficient heat transfer devices, have received widespread attention in recent years. By utilizing the phase change process of the working fluid inside the heat pipe, heat pipe radiators achieve rapid heat transfer and long-distance diffusion, resulting in high heat dissipation efficiency. Compared to traditional aluminum substrate radiators, heat pipe radiators offer superior thermal conductivity and lower thermal resistance, effectively meeting the heat dissipation needs of high-power devices within limited space.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] The heat dissipation performance of heat pipe radiators is greatly affected by the ambient temperature, especially when the ambient temperature is high, which affects the heat dissipation performance of heat pipe radiators.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a heat pipe radiator, comprising: a heat pipe including an outer wall; and a negative Poisson's ratio member disposed on the outer wall of the heat pipe to make the negative Poisson's ratio member in thermal contact with the heat pipe. When tensile stress is applied to the negative Poisson's ratio member, the member deforms and separates from the outer wall of the heat pipe, and dissipates heat. When the tensile stress is removed, the member recovers its deformation and adheres to the outer wall of the heat pipe, absorbing heat from the heat pipe.

[0009] In some alternative embodiments, the negative Poisson's ratio member is tubular and sleeved on the outer wall of the heat pipe. The negative Poisson's ratio member includes a first sleeve end and a second sleeve end that are sleeved on the outer wall of the heat pipe, and the first sleeve end is fixedly connected to a first position on the outer wall of the heat pipe.

[0010] In some alternative embodiments, the second sleeve end of the negative Poisson's ratio member is freely sleeved with the second position of the outer wall of the heat pipe.

[0011] In some alternative embodiments, the negative Poisson's ratio member is provided with multiple open slots.

[0012] In some alternative embodiments, the heat pipe includes a heated end near the heat source and a dissipating end away from the heat source, wherein a negative Poisson's ratio member is disposed on the outer wall of the dissipating end of the heat pipe.

[0013] In some alternative embodiments, the heat pipe radiator further includes: a base in thermal contact with the heated end of the heat pipe; and a drive assembly drivenly connected to the negative Poisson's ratio member for applying tensile stress to the negative Poisson's ratio member.

[0014] In some alternative embodiments, the driving component is driven to a second set of terminals of the negative Poisson's ratio component.

[0015] In some alternative embodiments, the drive assembly includes a drive motor and a linkage member, wherein a first connecting end of the linkage member is connected to the drive motor, and a second connecting end of the linkage member is connected to a second sleeve end of the negative Poisson's ratio member, so that the linkage member transmits the tensile stress generated by the drive motor to the negative Poisson's ratio member.

[0016] In some alternative embodiments, the heat pipe includes a first heat dissipation end and a second heat dissipation end disposed at both ends of the heated end and extending in the same direction. The first heat dissipation end is fitted with a first negative Poisson's ratio structural member, and the second heat dissipation end is fitted with a second negative Poisson's ratio structural member. The connecting rod member includes a first connecting rod and a second connecting rod. The first connecting rod is connected to the first negative Poisson's ratio structural member to transfer the tensile stress generated by the drive motor to the first negative Poisson's ratio structural member. The second connecting rod is connected to the second negative Poisson's ratio structural member to transfer the tensile stress generated by the drive motor to the second negative Poisson's ratio structural member.

[0017] This disclosure also provides a home appliance, including: an electronic control board; and a heat pipe radiator, which is in thermal contact with the electronic control board for dissipating heat from the electronic control board, wherein the heat pipe radiator is as described above.

[0018] The heat pipe radiator and household appliance provided in this disclosure can achieve the following technical effects:

[0019] A heat pipe radiator includes a heat pipe and a negative Poisson's ratio member disposed on the outer wall of the heat pipe, which is in thermal contact with the heat pipe. When tensile stress is applied to the negative Poisson's ratio member, it deforms and separates from the outer wall of the heat pipe, and dissipates heat. When the tensile stress is removed, the negative Poisson's ratio member returns to its original shape and adheres to the outer wall of the heat pipe, absorbing heat from the heat pipe.

[0020] As can be seen, the heat pipe radiator provided in this embodiment has a negative Poisson's ratio member disposed on the outer wall of the heat pipe. This member receives heat from the heat pipe. Tensile stress can be applied to the member, causing it to deform laterally and separate from the outer wall of the heat pipe, releasing heat. Thus, the member dissipates heat from the heat pipe. After dissipation, the temperature of the member drops to ambient temperature. When the tensile stress is removed, the member recovers its deformation and adheres to the outer wall of the heat pipe. Simultaneously, its temperature further decreases, falling below ambient temperature, thereby absorbing heat from the heat pipe.

[0021] The heat pipe radiator with a negative Poisson's ratio component provided in this embodiment absorbs heat when the tensile stress is removed. At this time, the temperature of the negative Poisson's ratio component itself can be lower than the ambient temperature. After the tensile stress is removed, the negative Poisson's ratio component recovers its deformation and comes into contact with the outer wall of the heat pipe, thereby absorbing the heat of the heat pipe and improving the heat dissipation effect of the heat pipe.

[0022] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Devices having the same reference numerals in the drawings are shown as similar devices. The drawings are not to be scaled. And wherein:

[0024] Figure 1 This is a schematic diagram of a heat pipe radiator provided in an embodiment of this disclosure;

[0025] Figure 2 This is a schematic diagram of another heat pipe radiator provided in an embodiment of this disclosure;

[0026] Figure 3 This is a schematic diagram of a negative Poisson's ratio component provided in an embodiment of this disclosure;

[0027] Figure 4 This is a schematic diagram of another heat pipe radiator provided in an embodiment of this disclosure;

[0028] Figure 5 This is a schematic diagram of another heat pipe radiator provided in an embodiment of this disclosure;

[0029] Figure 6 This is a schematic diagram of another heat pipe radiator provided in an embodiment of this disclosure;

[0030] Figure 7 This is a schematic diagram of another heat pipe radiator provided in an embodiment of this disclosure;

[0031] Figure 8 This is a schematic diagram of another heat pipe radiator provided in an embodiment of this disclosure;

[0032] Figure 9 This is a schematic diagram of another heat pipe radiator provided in an embodiment of this disclosure;

[0033] Figure 10 This is a schematic diagram of another heat pipe radiator provided in an embodiment of this disclosure.

[0034] Figure label:

[0035] 1: Heat pipe; 101: Outer wall of heat pipe; 11: First position; 12: Second position; 13: Heated end; 141: First heat dissipation end; 142: Second heat dissipation end;

[0036] 2: Negative Poisson's ratio component; 201: Hollowed-out gap; 21: First set end; 22: Second set end; 231: First negative Poisson's ratio structural component; 232: Second negative Poisson's ratio structural component; 241: First negative Poisson's ratio unit; 242: Second negative Poisson's ratio unit;

[0037] 3: Base; 31: First base surface; 32: Second base surface;

[0038] 4: Drive assembly; 41: Drive motor; 421: First connecting rod; 422: Second connecting rod;

[0039] 5: Driver bracket. Detailed Implementation

[0040] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0041] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for describing embodiments of this disclosure herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0042] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better describing the embodiments of this disclosure and their implementations, and are not intended to limit the indicated device, apparatus, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this disclosure according to the specific circumstances.

[0043] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0044] Unless otherwise stated, the term "multiple" means two or more.

[0045] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0047] Heat pipe radiators rely on natural convection for heat dissipation. Even with the assistance of a fan, the temperature at the heat pipe's heat sink end will only drop to ambient temperature, not below it. Therefore, the heat dissipation performance of heat pipe radiators is significantly affected by ambient temperature, especially under high ambient temperatures.

[0048] Mechanical metamaterials are a branch of metamaterials in the field of mechanics. By designing their internal microstructure, they can produce counterintuitive deformation properties under the excitation of an external physical field. For example, under longitudinal tensile stress, the transverse dimension of conventional materials decreases, while the characteristic of negative Poisson's ratio mechanical metamaterials is that the transverse dimension of conventional materials increases under longitudinal tensile stress; therefore, this phenomenon is also known as "dilatation".

[0049] A negative Poisson's ratio component is a metamaterial structure with negative Poisson's ratio mechanics. When tensile stress is applied, the negative Poisson's ratio component releases heat and its temperature rises; when the tensile stress is removed, the negative Poisson's ratio component absorbs heat and its temperature drops.

[0050] Spin-and-carry refrigeration is a solid-state refrigeration technology that uses stress to drive a phase change in a spin-and-carry material, thereby producing a cooling effect. The basic concept of this refrigeration technology was proposed by British researchers in 2004. In 2014, the U.S. Department of Energy released a list of 17 compression-free refrigeration technologies with good development prospects, and spin-and-carry refrigeration was rated as the refrigeration technology with the greatest energy-saving potential. From an application perspective, nickel-titanium shape memory alloys are a good candidate material for high efficiency and environmental protection.

[0051] The heat pipe radiator provided in this embodiment has a negative Poisson's ratio member 2 disposed on the outer wall 101 of the heat pipe. When the tensile stress is removed from the negative Poisson's ratio member 2, it comes into contact with the heat pipe 1, accelerating the condensation of gas inside the heat pipe 1 and reducing the temperature of the condensate, thereby improving the heat dissipation effect of the heat pipe 1. Figures 1 to 10 As shown.

[0052] Optionally, the heat pipe radiator includes a heat pipe 1 and a negative Poisson's ratio component 2. The heat pipe 1 includes an outer wall 101, and the negative Poisson's ratio component 2 is disposed on the outer wall 101 so that the negative Poisson's ratio component 2 is in thermally conductive contact with the heat pipe 1. When tensile stress is applied to the negative Poisson's ratio component 2, the component deforms and separates from the outer wall 101, and dissipates heat. When the tensile stress is removed, the component recovers its deformation and adheres to the outer wall 101, absorbing heat from the heat pipe 1.

[0053] It is understood that the negative Poisson's ratio component 2 provided in this embodiment has a mechanical metamaterial structure and a spring-loaded effect. Optionally, the negative Poisson's ratio component 2 comprises a shape memory nickel-titanium alloy.

[0054] A negative Poisson's ratio component 2 is disposed on the outer wall 101 of the heat pipe and is in thermal contact with the heat pipe 1. When tensile stress is applied to the negative Poisson's ratio component 2, it undergoes lateral deformation and separates from the outer wall 101 of the heat pipe. Furthermore, the negative Poisson's ratio component 2 releases or dissipates heat, dissipating heat into the environment. With the assistance of a fan, the temperature of the negative Poisson's ratio component 2 can be rapidly reduced to ambient temperature. Figure 2As shown; when the tensile stress is removed from the negative Poisson's ratio member 2, the negative Poisson's ratio member 2 recovers its shape and is attached to the outer wall 101 of the heat pipe, as shown. Figure 1 As shown, the negative Poisson's ratio component 2, which has had its tensile stress removed, has a heat absorption effect. The temperature of the negative Poisson's ratio component 2 itself drops below the ambient temperature. In this way, the lower temperature of the negative Poisson's ratio component 2 can absorb the heat from the heat pipe 1, so that the heat dissipation performance of the heat pipe 1 is not affected by the ambient temperature, thus improving the heat dissipation effect of the heat pipe 1.

[0055] Optionally, thermally conductive silicone is filled between the outer wall 101 of the heat pipe and the negative Poisson's ratio component 2 to reduce the contact thermal resistance between the two.

[0056] Optionally, the negative Poisson's ratio component 2 is tubular and sleeved on the outer wall 101 of the heat pipe. The negative Poisson's ratio component 2 includes a first sleeve end 21 and a second sleeve end 22 that are sleeved on the outer wall 101 of the heat pipe. The first sleeve end 21 is fixedly connected to a first position 11 of the outer wall 101 of the heat pipe.

[0057] Optionally, the inner diameter of the tubular negative Poisson's ratio member 2 is equal to the diameter of the outer wall 101 of the heat pipe. In this way, after the shape of the negative Poisson's ratio member 2 is restored after the tensile stress is removed, the fit between the negative Poisson's ratio member 2 and the outer wall 101 of the heat pipe is improved, thereby improving the heat absorption effect of the lower temperature negative Poisson's ratio member 2 on the heat pipe 1.

[0058] The tubular negative Poisson's ratio member 2 increases the contact area with the outer wall 101 of the heat pipe. Thus, when the tensile stress is removed from the negative Poisson's ratio member 2, the lower temperature of the member enhances the heat absorption effect of the heat pipe 1, thereby improving the heat dissipation effect of the heat pipe 1. Optionally, the tubular negative Poisson's ratio member 2 has a certain thickness.

[0059] The negative Poisson's ratio member 2 has a first sleeve end 21 and a second sleeve end 22, wherein the first sleeve end 21 is fixedly connected to a first position 11 of the outer wall 101 of the heat pipe. It is understood that by fixing the first sleeve end 21 to the first position 11 of the outer wall 101 of the heat pipe, the connection position between the first sleeve end 21 and the outer wall 101 of the heat pipe remains unchanged when the negative Poisson's ratio member 2 deforms under tensile stress.

[0060] Optionally, the second fitting end 22 of the negative Poisson's ratio component 2 is freely fitted onto the second position 12 of the outer wall 101 of the heat pipe.

[0061] It is understandable that the second fitting end 22 of the negative Poisson's ratio component 2 is not fixedly connected to the second position 12 of the heat pipe outer wall 101. When the negative Poisson's ratio component 2 is subjected to tensile stress and deforms, the second fitting end 22 of the negative Poisson's ratio component 2 will displace from the second position 12. It is also understandable that the second position 12 of the heat pipe outer wall 101 is the position of the heat pipe outer wall 101 corresponding to the second fitting end 22 when the negative Poisson's ratio component 2 recovers its deformation. Figure 1 As shown.

[0062] Optionally, the negative Poisson's ratio component 2 is provided with multiple openwork slots 201.

[0063] The negative Poisson's ratio component 2 is provided with multiple openwork gaps 201. These gaps are small and slit-shaped, such as... Figures 1 to 3 As shown, the negative Poisson's ratio component 2 with multiple perforated slots 201 can reduce its driving force, which is beneficial to the miniaturization of the negative Poisson's ratio component 2. Furthermore, the slit-shaped perforated slots 201 result in a smaller porosity of the negative Poisson's ratio component 2, that is, the perforated area of ​​the tubular nickel-titanium alloy matrix is ​​very small, and the loss of nickel-titanium alloy is small; moreover, the negative Poisson's ratio component 2 with perforated slots 201 generates a larger amount of cooling after the tensile stress is removed.

[0064] Optionally, a negative Poisson's ratio component 2 with hollowed-out gaps 201 can be prepared using 3D printing equipment; or, a nickel-titanium alloy can be prepared into a tube blank by casting or rolling, and a negative Poisson's ratio component 2 with hollowed-out gaps 201 can be obtained by laser cutting, electrical discharge wire cutting or other processes.

[0065] Finite element simulation tests were conducted on the negative Poisson's ratio component 2 with hollowed-out gaps 201. The results showed that, compared with the negative Poisson's ratio component 2 without hollowed-out gaps 201, the negative Poisson's ratio component 2 with hollowed-out gaps 201 provided in this embodiment exhibits a larger lateral deformation when subjected to tensile stress.

[0066] Optionally, the negative Poisson's ratio component 2 includes a first negative Poisson's ratio unit 241 and a second negative Poisson's ratio unit 242, which are spaced apart on the outer wall 101 of the heat pipe. This allows the two negative Poisson's ratio units to absorb heat from the same outer wall 101 of the heat pipe, improving the cooling effect of the negative Poisson's ratio component 2 on the heat pipe 1, and thus improving the heat dissipation effect of the heat pipe 1. It is understood that both the first negative Poisson's ratio unit 241 and the second negative Poisson's ratio unit 242 are located at the first heat dissipation end 141; or, both the first negative Poisson's ratio unit 241 and the second negative Poisson's ratio unit 242 are located at the second heat dissipation end 142.

[0067] Optionally, tensile stress can be selectively applied to the first negative Poisson's ratio unit 241 and / or the second negative Poisson's ratio unit 242 based on the temperature of the outer wall 101 of the heat pipe. For example,

[0068] S1: Obtain the temperature T of the outer wall 101 of the heat pipe;

[0069] S2: When the temperature T of the outer wall 101 of the heat pipe is greater than or equal to the first preset temperature T1 and less than the second preset temperature T2, tensile stress is applied and removed alternately only to the first negative Poisson's ratio unit 241, so as to use the first negative Poisson's ratio unit 241 to absorb the heat of the heat pipe 1 and cool down the heat pipe 1.

[0070] S3: When the temperature T of the outer wall 101 of the heat pipe is greater than or equal to the second preset temperature T2 and less than the third preset temperature T3, tensile stress is alternately applied and removed only to the second negative Poisson's ratio unit 242, so that the second negative Poisson's ratio unit 242 absorbs heat from the heat pipe 1 to cool the heat pipe 1; optionally, the length L2 of the second negative Poisson's ratio unit 242 is greater than the length L1 of the first negative Poisson's ratio unit 241, so that the heat absorbed by the second negative Poisson's ratio unit 242 after a single stress removal is greater than the heat absorbed by the first negative Poisson's ratio unit 241 after a single stress removal, such as... Figure 7 As shown.

[0071] S4: When the temperature T of the outer wall 101 of the heat pipe is greater than or equal to the third preset temperature T3, tensile stress is alternately applied to the first negative Poisson's ratio unit 241 and the second negative Poisson's ratio unit 242 and tensile stress is removed, so that the heat pipe 1 is cooled down by absorbing the heat of the heat pipe 1 at the same time.

[0072] Optionally, when it is necessary to simultaneously use the first negative Poisson's ratio unit 241 and the second negative Poisson's ratio unit 242 to absorb heat from the heat pipe 1, the application of tensile stress to the first negative Poisson's ratio unit 241 and the second negative Poisson's ratio unit 242 can be performed simultaneously, such as... Figure 5 As shown, the tensile stress is simultaneously removed from the first negative Poisson's ratio unit 241 and the second negative Poisson's ratio unit 242, so that the first negative Poisson's ratio unit 241 and the second negative Poisson's ratio unit 242 simultaneously absorb heat from the heat pipe 1; or, the tensile stress is removed from the first negative Poisson's ratio unit 241, and then tensile stress is applied to the second negative Poisson's ratio unit 242, such as... Figure 6 As shown, the first negative Poisson's ratio unit 241 and the second negative Poisson's ratio unit 242 alternately absorb heat from the heat pipe 1.

[0073] Optionally, the first preset temperature T1 is 50℃; the second preset temperature T2 is 60℃; and the third preset temperature T1 is 70℃.

[0074] Optionally, the heat pipe 1 includes a heated end 13 near the heat source and a dissipating end away from the heat source, wherein the negative Poisson's ratio member 2 is disposed on the outer wall of the dissipating end of the heat pipe 1.

[0075] The heated end 13 of the heat pipe 1 is close to the heat source and receives heat from the control board and other heat sources. The heat dissipation end of the heat pipe 1 is far from the heat source relative to the heated end 13, and is used for heat dissipation. A negative Poisson's ratio component 2 is disposed on the outer wall of the heat dissipation end of the heat pipe 1 to improve the heat dissipation effect of the heat dissipation end of the heat pipe 1.

[0076] Optionally, the heat pipe radiator also includes a base 3 and a drive assembly 4. The base 3 is in thermal contact with the heated end 13 of the heat pipe 1; the drive assembly 4 is driven to the negative Poisson's ratio member 2 and is used to apply tensile stress to the negative Poisson's ratio member 2.

[0077] Optionally, the heated end 13 of the heat pipe 1 is in thermal contact with the base 3. Optionally, the base 3 includes a first base surface 31 and a second base surface 32 facing each other, with the first base surface 31 in direct thermal contact with the heat source. Optionally, the heated end 13 of the heat pipe 1 is disposed on the first base surface 31 of the base 3. Optionally, the first base surface 31 is provided with a snap-fit ​​groove, and the heated end 13 of the heat pipe 1 is snap-fitted into the snap-fit ​​groove.

[0078] Optionally, the drive component 4 can generate tensile stress to apply tensile stress to the negative Poisson's ratio member 2. Optionally, the drive component 4 is supported on the second base surface 32 of the base 3. Optionally, the heat pipe radiator further includes a driver bracket 5, which includes a support base plate and a support rod, wherein the support rod is disposed on the second base surface 32, and the drive component 4 is disposed on the support base plate. Optionally, the driver bracket 5 is a non-thermally conductive structure.

[0079] Optionally, both the driver bracket 5 and the driver assembly 4 are disposed between the second base surface 32 of the base 3 and the second sleeve end 22 of the negative Poisson's ratio member 2, which is beneficial to the overall miniaturization of the heat pipe radiator.

[0080] Optionally, the drive assembly 4 is driven to the second set end 22 of the negative Poisson's ratio component 2.

[0081] The second set of end 22 is the free end of the negative Poisson's ratio member 2. The driving component 4 is driven to the free end of the negative Poisson's ratio member 2 to apply tensile stress to the negative Poisson's ratio member 2.

[0082] Optionally, the drive assembly 4 includes a drive motor 41 and a connecting rod member, wherein the first connecting end of the connecting rod member is connected to the drive motor 41, and the second connecting end of the connecting rod member is connected to the second sleeve end 22 of the negative Poisson's ratio member 2, so that the connecting rod member transmits the tensile stress generated by the drive motor 41 to the negative Poisson's ratio member 2.

[0083] The tensile force generated by the drive motor 41 is transmitted to the negative Poisson's ratio member 2 through the connecting rod member. Optionally, the connecting rod member is a non-elastic member, so that the connecting rod member can accurately transmit the tensile stress generated by the drive motor 41 to the negative Poisson's ratio member 2.

[0084] Optionally, the drive motor 41 can be connected to the connecting rod component by means of bolts, welding, or other methods.

[0085] Optionally, the heat pipe 1 includes a first heat dissipation end 141 and a second heat dissipation end 142 disposed at both ends of the heated end 13 and extending in the same direction. The first heat dissipation end 141 is fitted with a first negative Poisson's ratio structure 231, and the second heat dissipation end 142 is fitted with a second negative Poisson's ratio structure 232. The connecting rod component includes a first connecting rod 421 and a second connecting rod 422. The first connecting rod 421 is connected to the first negative Poisson's ratio structure 231 to transmit the tensile stress generated by the drive motor 41 to the first negative Poisson's ratio structure 231; the second connecting rod 422 is connected to the second negative Poisson's ratio structure 232 to transmit the tensile stress generated by the drive motor 41 to the second negative Poisson's ratio structure 232.

[0086] Optionally, the two ends of the heat-receiving end 13 of the heat pipe 1 are respectively provided with a first heat dissipation end 141 and a second heat dissipation end 142, and the first heat dissipation end 141 and the second heat dissipation end 142 extend in the same direction. Let the direction from the first base surface 31 to the second base surface 32 be the first direction, and the extension direction of the first heat dissipation end 141 and the second heat dissipation end 142 be the first direction.

[0087] Optionally, the first heat dissipation end 141 and the second heat dissipation end 142 have the same extension length, and the first negative Poisson's ratio structure 231 and the second negative Poisson's ratio structure 232 have the same setting height. This is beneficial for the same drive motor 41 to simultaneously apply tensile stress to the first negative Poisson's ratio structure 231 and the second negative Poisson's ratio structure 232.

[0088] Optionally, both the first connecting rod 421 and the second connecting rod 422 are perpendicularly connected to the drive motor 41. Optionally, the first connecting rod 421 is perpendicularly connected to the first negative Poisson's ratio structure 231, and the second connecting rod 422 is perpendicularly connected to the second negative Poisson's ratio structure 232. Optionally, the first connecting rod 421 and the second connecting rod 422 are arranged in a horizontal direction, and the first connecting rod 421 and the second connecting rod 422 are arranged on the same horizontal line.

[0089] Optionally, the first connecting rod 421 can be connected to the free end of the first negative Poisson's ratio structural member 231 by welding, gluing or other means; similarly, the second connecting rod 422 can be connected to the free end of the second negative Poisson's ratio structural member 232 by welding, gluing or other means.

[0090] Optionally, the heat pipe radiator is provided with multiple heat pipes, each heat pipe including a first heat dissipation end 141 and a second heat dissipation end 142. Each first heat dissipation end 141 is provided with a first negative Poisson's ratio structure 231, and similarly, each second heat dissipation end 142 is provided with a second negative Poisson's ratio structure 232. The drive motor 41 simultaneously applies tensile stress to the multiple first negative Poisson's ratio structure 231 and the multiple second negative Poisson's ratio structure 232.

[0091] Alternatively, embodiments of this disclosure also provide a household appliance.

[0092] Optionally, the appliance includes an electronic control board and a heat pipe radiator. The heat pipe radiator is in thermal contact with the electronic control board to dissipate heat from the board, wherein the heat pipe radiator is as described above.

[0093] Optionally, the home appliance can be an air conditioner, television, or other device equipped with an electronic control board. Taking an air conditioner as an example, the electronic control board includes a frequency converter chip for controlling the operation of structural components such as the compressor. Under high-temperature cooling conditions, the frequency converter chip generates a large amount of heat, which is also concentrated. The heat pipe radiator provided in this embodiment can improve the heat dissipation effect on the electronic control board.

[0094] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A heat pipe radiator, characterized in that, include: Heat pipe (1), including heat pipe outer wall (101); and, A negative Poisson's ratio component (2) is disposed on the outer wall (101) of the heat pipe so that the negative Poisson's ratio component (2) makes thermal contact with the heat pipe (1). When tensile stress is applied to the negative Poisson's ratio member (2), the negative Poisson's ratio member (2) deforms and separates from the outer wall (101) of the heat pipe, and the negative Poisson's ratio member (2) dissipates heat; when the tensile stress is removed from the negative Poisson's ratio member (2), the negative Poisson's ratio member (2) recovers its deformation and is attached to the outer wall (101) of the heat pipe, and absorbs the heat of the heat pipe (1).

2. The heat pipe radiator according to claim 1, characterized in that, The negative Poisson's ratio component (2) is tubular and fitted onto the outer wall (101) of the heat pipe. The negative Poisson ratio component (2) includes a first fitting end (21) and a second fitting end (22) fitted onto the outer wall (101) of the heat pipe, and the first fitting end (21) is fixedly connected to the first position (11) of the outer wall (101) of the heat pipe.

3. The heat pipe radiator according to claim 2, characterized in that, The second fitting end (22) of the negative Poisson ratio component (2) is freely fitted with the second position (12) of the outer wall (101) of the heat pipe.

4. The heat pipe radiator according to claim 1, characterized in that, The negative Poisson ratio component (2) has multiple openwork slots (201).

5. The heat pipe radiator according to claim 1, characterized in that, The heat pipe (1) includes a heated end (13) close to the heat source and a heat dissipation end away from the heat source. The negative Poisson ratio component (2) is located on the outer wall of the heat dissipation end of the heat pipe (1).

6. The heat pipe radiator according to any one of claims 1 to 5, characterized in that, Also includes: The base (3) is in thermal contact with the heated end (13) of the heat pipe (1); and, The drive assembly (4) is driven to connect with the negative Poisson's ratio member (2) and is used to apply tensile stress to the negative Poisson's ratio member (2).

7. The heat pipe radiator according to claim 6, characterized in that, The drive assembly (4) is driven to connect with the second set end (22) of the negative Poisson ratio component (2).

8. The heat pipe radiator according to claim 6, characterized in that, The drive assembly (4) includes a drive motor (41) and a connecting rod. The first connecting end of the connecting rod is connected to the drive motor (41), and the second connecting end of the connecting rod is connected to the second sleeve end (22) of the negative Poisson's ratio member (2), so that the connecting rod can transmit the tensile stress generated by the drive motor (41) to the negative Poisson's ratio member (2).

9. The heat pipe radiator according to claim 6, characterized in that, The heat pipe (1) includes a first heat dissipation end (141) and a second heat dissipation end (142) located at both ends of the heated end (13) and extending in the same direction. The first heat dissipation end (141) is fitted with a first negative Poisson's ratio structural component (231), and the second heat dissipation end (142) is fitted with a second negative Poisson's ratio structural component (232). The connecting rod component includes a first connecting rod (421) and a second connecting rod (422). The first connecting rod (421) is connected to the first negative Poisson's ratio structure (231) to transfer the tensile stress generated by the drive motor (41) to the first negative Poisson's ratio structure (231). The second connecting rod (422) is connected to the second negative Poisson's ratio structure (232) to transfer the tensile stress generated by the drive motor (41) to the second negative Poisson's ratio structure (232).

10. A household appliance, characterized in that, include: Electronic control board; and, The heat pipe radiator, in thermal contact with the electronic control board, is used to dissipate heat from the electronic control board. The heat pipe radiator is the heat pipe radiator according to any one of claims 1 to 9.

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