Heat transfer device capable of absorbing vibrations

Abstract

The utility model provides a kind of heat transfer device capable of absorbing vibration, including evaporation chamber, condensing chamber and connecting pipeline, the evaporation chamber and the condensing chamber inside are equipped with evaporation cavity and condensing cavity respectively, the connecting pipeline includes the elastic shock-absorbing section of helical shape, the evaporation cavity and the condensing cavity are communicated by the connecting pipeline, to jointly constitute a closed space, working substance is added in the closed space.The utility model is provided with elastic shock-absorbing section, utilizes the elastic mechanical characteristics of spiral structure, absorbs and buffers vibration, improves the stability of connecting pipeline, effectively improves heat transfer efficiency and the heat dissipation capacity of the device, can be better applied to the work under dynamic environment.In addition, the pipe material fracture phenomenon caused by stress concentration can also be avoided, effectively improves use reliability, greatly prolongs service life.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, and more specifically, to a heat transfer device that can absorb vibration. Background Technology

[0002] Currently, conventional heat transfer devices mainly consist of an evaporation chamber, a condensation chamber, and straight or simple bent pipes connecting the two. Their core working principle utilizes the phase change process of the working fluid absorbing heat and vaporizing in the evaporation chamber, and releasing heat and liquefying in the condensation chamber. This, combined with the connecting pipes, completes the circulation flow, ultimately achieving heat transfer and dissipation. With the increasing integration of industrial equipment and the growing complexity of dynamic working environments, more stringent requirements are being placed on the reliability, stability, and service life of heat transfer devices.

[0003] However, existing heat transfer devices have several shortcomings in dynamic environments that urgently need to be addressed: First, continuous vibrations generated in dynamic environments are easily transmitted to connecting pipes. Due to the lack of targeted shock absorption and buffering design in existing connecting pipes, vibrations directly interfere with the flow state of the working fluid within the pipes, leading to increased flow resistance, drastic flow velocity fluctuations, and even working fluid stagnation in severe cases, significantly reducing heat transfer efficiency and failing to meet the heat dissipation requirements of the equipment. Second, the stress generated by vibration tends to concentrate in local areas such as the interfaces and inflection points of the connecting pipes. Under long-term action, this can easily cause pipe cracking and breakage, leading not only to the failure of the heat transfer device but also potential safety hazards due to working fluid leakage, significantly reducing the reliability and service life of the device. Third, some improvement solutions have adopted complex structures such as multi-section composite pipes and external shock absorption mechanisms to enhance vibration resistance. While these solutions alleviate the vibration problem to some extent, they significantly increase the manufacturing cost and assembly difficulty of the device, resulting in poor economic efficiency and hindering large-scale promotion and application.

[0004] Therefore, in order to address the problems of insufficient vibration resistance, significant stress concentration, complex structure, and high cost of heat transfer device connecting pipes under dynamic environments, there is an urgent need for a heat transfer device with simple structure, excellent vibration resistance, and good economy to solve the problems existing in the above-mentioned prior art. Utility Model Content

[0005] In view of this, the present invention provides a heat transfer device that can absorb vibration, so as to solve the problems of low heat transfer efficiency and short service life of existing heat transfer devices under dynamic working environment.

[0006] The objective of this utility model is achieved through the following technical solution.

[0007] A heat transfer device capable of absorbing vibration includes an evaporation chamber, a condensation chamber, and a connecting pipe. The evaporation chamber and the condensation chamber are respectively provided with an evaporation cavity and a condensation cavity. The connecting pipe includes a spiral elastic shock-absorbing section. The evaporation cavity and the condensation cavity are connected through the connecting pipe to form a closed space. A working fluid is added to the closed space.

[0008] In the above scheme, the evaporation chamber is used to contact the external heat source, absorbing heat to achieve heat dissipation. At room temperature, the working fluid in this device is in a liquid state and is located inside the evaporation chamber. During operation, when the temperature of the evaporation chamber rises, the liquid working fluid in the evaporation chamber evaporates and transforms into a gaseous state. The gaseous working fluid is transferred to the condensation chamber through the connecting pipe, where it condenses into a liquid. Under the action of the siphon effect, it flows back into the evaporation chamber through the connecting pipe, forming a gas-liquid cycle to achieve continuous circulation and dynamic heat transfer equilibrium, thereby achieving heat transfer and cooling of the external heat source. The connecting pipe is equipped with an elastic shock-absorbing section, which is spiral-shaped and has a restorable elastic deformation capability similar to a spring. When this device is applied in a dynamic environment (such as in a vehicle), there is continuous vibration during operation. The elastic shock-absorbing section can dissipate vibration energy through its own elastic deformation, thus absorbing vibration. This device utilizes the elastic mechanical properties of a spiral structure to improve the stability of the connecting pipeline, prevent environmental vibrations from affecting the propagation of the working fluid between the evaporation and condensation chambers, make the flow of the working fluid in the connecting pipeline more stable, improve heat transfer efficiency, and thus enhance the heat dissipation capacity of the device to ensure the heat dissipation effect on external heat sources.

[0009] Furthermore, if straight pipes are used to connect the evaporator and condenser chambers, stress will concentrate at the joints or bends of the pipes under vibration. Over time, this localized stress concentration can easily exceed the fatigue limit of the pipes, leading to breakage and rendering the device ineffective for heat dissipation, resulting in poor reliability. In contrast, the elastic shock-absorbing section of this device has a spiral structure that disperses the stress generated by vibration onto each turn of the pipe, thus preventing pipe breakage due to stress concentration, effectively improving reliability, and significantly extending the device's service life.

[0010] In one example of this invention, the elastic shock-absorbing section is spring-shaped.

[0011] In the above scheme, the spring-shaped structure has better elastic deformation capability, which can further enhance the absorption effect of vibration and improve the stability of the working fluid flowing in the connecting pipeline.

[0012] In one example of this utility model, two connecting pipes are provided, and the two ends of the two connecting pipes are respectively connected to the evaporation chamber and the condensation chamber to form a closed loop.

[0013] In the above scheme, by setting up two connecting pipelines, the entire device forms a closed ring structure. The internal working fluid circulates in a ring along the loop, so that the liquid working fluid and the gaseous working fluid flow independently, avoiding the mixing of the gas and liquid phases from affecting the transfer of the working fluid, and ensuring that the heat transfer efficiency is not affected.

[0014] In one example of this utility model, the two ends of the evaporation chamber and the condensation chamber are provided with connecting pipes, and the connecting pipes are connected to the evaporation chamber and the condensation chamber through the connecting pipes.

[0015] In the above scheme, the connecting pipe is connected to the internal evaporation chamber and condensation chamber. By setting the connecting pipe for connecting pipelines, a more stable sealing surface can be provided to ensure the sealing of the connection.

[0016] In one example of this invention, the evaporation chamber is provided with a liquid injection pipe.

[0017] In the above scheme, the injection tube is used to add working fluid into the evaporation chamber.

[0018] In one example of this invention, both the evaporation chamber and the condensation chamber include a contact shell and an end cap connected to each other.

[0019] In the above design, both the evaporation chamber and the condensation chamber consist of a contact shell and an end cap. One end of the contact shell is open, and when fitted with the end cap, it forms cavities inside, namely the evaporation chamber and the condensation chamber. During operation, the contact shell of the evaporation chamber contacts an external heat source to conduct heat to the internal evaporation chamber, causing the working fluid to evaporate and thus achieving heat dissipation. Conversely, the contact shell of the condensation chamber can also contact an external refrigeration unit to help the internal gaseous working fluid condense rapidly.

[0020] In one example of this utility model, a plurality of protrusions are spaced apart on the inner sidewall of the contact housing.

[0021] In the above scheme, by setting protrusions, the contact area between the contact shell and the internal working fluid can be increased, thereby improving the efficiency of heat conduction and making the evaporation and condensation of the working fluid faster and more efficient.

[0022] In one example of this utility model, the protrusion and the contact housing are an integral structure.

[0023] In the above scheme, the bump and the contact shell are set as an integrated structure, which facilitates the direct conduction of heat from the outer surface of the contact shell to the bump, thereby eliminating contact thermal resistance and improving heat transfer efficiency.

[0024] In one example of this utility model, the contact housing is provided with an arc-shaped contact surface.

[0025] In the above scheme, the contact surface is used to contact the external heat source. Compared with the plane, the arc-shaped surface has a larger surface area, which can increase the contact area with the external heat source and facilitate heat transfer.

[0026] In one example of this utility model, the evaporation chamber and the condensation chamber are provided with a plurality of connection holes.

[0027] In the above scheme, connection holes are provided on the evaporation chamber and the condensation chamber to facilitate the installation and connection with external equipment for heat dissipation.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows: This application incorporates a spiral-shaped elastic shock-absorbing section in the connecting pipeline. Utilizing the elastic mechanical properties of the spiral structure, it absorbs and buffers vibrations, improving the stability of the connecting pipeline and preventing environmental vibrations from affecting the flow of the working fluid between the evaporation and condensation chambers. This results in a more stable flow of the working fluid in the connecting pipeline, effectively improving heat transfer efficiency and the heat dissipation capacity of the device, making it better suited for operation in dynamic environments. Furthermore, the spiral structure of the elastic shock-absorbing section disperses the stress generated by vibration onto each turn of the pipe, preventing stress concentration and pipe breakage, effectively improving reliability and significantly extending the service life of the device. Additionally, this application only modifies the connecting pipeline, requiring no additional components, resulting in a simple overall structure, effective cost savings, and good economic efficiency, making it suitable for widespread use. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a perspective view of a heat transfer device capable of absorbing vibration, according to one embodiment.

[0031] Figure 2 for Figure 1 Bottom view of the heat transfer device (with end caps removed).

[0032] Explanation of the reference numerals in the figure: 1-Evaporation chamber; 11-First contact shell; 12-First end cap; 13-Liquid injection pipe; 2-Condensation chamber; 21-Second contact shell; 22-Second end cap; 3-Connecting pipe; 31-Elastic shock-absorbing section; 4-Connecting pipe; 5-Protrusion; 6-Connecting hole. Detailed Implementation

[0033] To facilitate understanding of this invention, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0034] Please refer to Figure 1 and Figure 2 In a preferred embodiment, this embodiment provides a heat transfer device that can absorb vibration, including an evaporation chamber 1, a condensation chamber 2, and a connecting pipe 3. The evaporation chamber 1 and the condensation chamber 2 are respectively provided with an evaporation cavity and a condensation cavity. The connecting pipe 3 includes a spiral elastic shock-absorbing section 31. The evaporation cavity and the condensation cavity are connected through the connecting pipe 3 to form a closed space. A working fluid (not specifically shown in the figure) is added to the closed space.

[0035] There are two connecting pipes 3, and the two ends of the two connecting pipes 3 are respectively connected to the evaporation chamber and the condensation chamber to form a closed loop, that is, the closed space mentioned above.

[0036] Specifically, the evaporation chamber 1 is used to contact an external heat source, absorbing heat to dissipate heat from the external heat source. The condensation chamber 2 is in contact with an external cold source to release heat. At room temperature, the working fluid in this device is in a liquid state and is located in the evaporation chamber. During operation, the evaporation chamber 1 heats up under the influence of the external heat source, and the liquid working fluid in the evaporation chamber evaporates and transforms into a gaseous state. The gaseous working fluid is transferred to the condensation chamber through the connecting pipe 3, where it condenses into a liquid. Under the action of the siphon effect, it flows back into the evaporation chamber through the connecting pipe 3, forming a gas-liquid cycle to achieve continuous circulation and dynamic balance of heat transfer, thereby achieving the purpose of cooling the external heat source. The connecting pipe 3 is equipped with an elastic shock-absorbing section 31, which is spiral-shaped and has a spring-like recoverable elastic deformation capability. When this device is applied in dynamic environments (such as vehicle-mounted applications), continuous vibration occurs during operation. The elastic shock-absorbing section 31 can dissipate vibration energy through its own elastic deformation, thereby absorbing vibration and improving the stability of the connecting pipe 3 under continuous vibration. Furthermore, by setting up two connecting pipes 3, the entire device forms a closed annular structure, allowing the internal working fluid to circulate along this loop. This ensures that the liquid and gaseous working fluids flow independently, preventing the mixing of the two phases from affecting the transfer and transport of the working fluid, thus ensuring that heat transfer efficiency remains unaffected.

[0037] It should be noted that the working fluid requires a stable flow path to complete heat transfer. Continuous vibration will cause the working fluid in the connecting pipe 3 to shake constantly, obstructing the flow of the liquid working fluid and causing turbulence in the flow of the gaseous working fluid. This can easily lead to flow interruptions, eddies, or even stagnation, resulting in inefficient heat transfer and severely affecting heat transfer efficiency. This device utilizes the elastic mechanical properties of the spiral structure to improve the stability of the connecting pipe 3 in dynamic environments. This effectively prevents environmental vibrations from affecting the transfer of the working fluid between the evaporation chamber and the condensation chamber, making the flow of the working fluid in the connecting pipe 3 more stable, improving heat transfer efficiency, and thus enhancing the heat dissipation capacity of the device to ensure effective heat dissipation from external heat sources.

[0038] Furthermore, if a straight pipe is used to connect the evaporator chamber 1 and the condenser chamber 2, under the influence of vibration, stress will concentrate at the joints or bends at both ends of the pipe. Over a long period of time, this localized stress concentration can easily exceed the fatigue limit of the pipe, leading to breakage and causing the device to lose its heat dissipation function, resulting in poor reliability. In contrast, the elastic shock-absorbing section 31 of this device has a spiral structure, which can distribute the stress generated by vibration to each turn of the pipe, thereby avoiding pipe breakage caused by stress concentration, effectively improving reliability, and significantly extending the service life of the device.

[0039] It should also be noted that the siphon effect relies on gravity; therefore, in practical use, the evaporation chamber 1 and the condensation chamber 2 are not on the same horizontal plane, but have a height difference, i.e., they are positioned vertically. Specifically, the condensation chamber 2 is located above the evaporation chamber 1. After the liquid working fluid in the evaporation chamber evaporates, it rises along the connecting pipe 3 to the condensation chamber, where it releases heat and condenses into a liquid state. This liquid then flows back to the evaporation chamber through the connecting pipe 3, forming a cycle. The specific working principle of this device can be referenced from existing gravity heat pipes or thermosiphons, and will not be elaborated further here.

[0040] Preferably, the connecting pipe 3 in this embodiment is made of a metallic material, such as stainless steel, copper, or aluminum. Alternatively, non-metallic materials, composite materials, or multi-layered composite structures composed of different materials can also be used.

[0041] Preferably, the elastic shock-absorbing section 31 is spring-shaped. The spring-shaped structure has better elastic deformation capability, which can further enhance the absorption effect of vibration and improve the stability of the connecting pipe 3, so as to ensure the stable flow of the working fluid in the connecting pipe 3 and guarantee the heat transfer efficiency.

[0042] Please refer to Figure 1 and Figure 2Both ends of the evaporator chamber 1 and the condenser chamber 2 are equipped with connecting pipes 4, and the connecting pipes 3 are connected to the evaporator chamber and the condenser chamber through the connecting pipes 4. The connecting pipes 4 are connected to the internal evaporator chamber and the condenser chamber. By providing connecting pipes 4 for connecting pipes 3, a more stable sealing surface can be provided to ensure the sealing of the connection.

[0043] In addition, the evaporation chamber 1 is equipped with a liquid injection pipe 13, which is used to add working fluid into the evaporation chamber.

[0044] It is worth mentioning that the injection tube 13 is only used for the initial injection of the working medium. After the working medium is injected, the injection tube 13 is removed from the evaporation chamber 1, and the connection between the injection tube 13 and the evaporation chamber 1 is sealed to make the entire device a closed structure.

[0045] Please refer to Figure 1 and Figure 2 Both the evaporator chamber 1 and the condenser chamber 2 include a contact shell and an end cap connected to each other. The contact shell is open at one end and, when fitted with the end cap, forms a cavity inside, namely the evaporator chamber and the condenser chamber. The contact shell is used to contact external heat and cold sources to achieve heat conduction.

[0046] For ease of distinction, the contact shell and end cap that make up the evaporation chamber 1 are named the first contact shell 11 and the first end cap 12, and the contact shell and end cap that make up the condensation chamber 2 are named the second contact shell 21 and the second end cap 22.

[0047] For example, during specific operation, the first contact housing 11 is in contact with an external heat source. The external heat source transfers heat to the liquid working fluid in the evaporation chamber through the surface of the first contact housing 11, causing the liquid working fluid to absorb heat and turn into a gaseous state. Subsequently, the gaseous working fluid rises to the condensation chamber through the connecting pipe 3. The second contact housing 21 is in contact with an external cold source. After the gaseous working fluid in the condensation chamber releases heat to the external cold source through the surface of the second contact housing 21, it condenses into a liquid state. Under the siphon effect, it flows back to the evaporation chamber through the connecting pipe 3, forming a cycle.

[0048] Please refer to Figure 2 Multiple protrusions 5 are provided at intervals on the inner sidewalls of the first contact shell 11 and the second contact shell 21. By providing protrusions 5, the contact area between the contact shell and the internal working fluid can be increased, thereby improving the efficiency of heat conduction and making the evaporation and condensation of the working fluid faster and more efficient.

[0049] Preferably, the protrusion 5 and the contact shell are an integral structure. Setting the protrusion 5 and the contact shell as an integral structure is beneficial for heat to be directly conducted from the outer surface of the contact shell to the protrusion 5, thereby eliminating contact thermal resistance and improving heat transfer efficiency.

[0050] Please refer to Figure 1and Figure 2 The top surfaces of both the first contact housing 11 and the second contact housing 21 are arc-shaped. The top surface of the first contact housing 11 is used to contact an external heat source, and the top surface of the second housing is used to contact an external cold source. Compared with a flat surface, the arc-shaped surface has a larger surface area, which can increase the contact area with the external heat and cold sources, thus facilitating heat transfer.

[0051] It should be noted that, as Figure 2 As shown, in order to match the arc-shaped surface and ensure the uniformity of heat conduction, the inner wall of the first contact housing 11 is stepped so that the end faces of each protrusion 5 are located in the same plane.

[0052] Please refer to Figure 1 and Figure 2 The evaporation chamber 1 and the condensation chamber 2 are provided with connection holes 6, which facilitates installation and connection.

[0053] Preferably, both the evaporation chamber 1 and the condensation chamber 2 are provided with four connection holes 6, which are distributed at the four corners of the evaporation chamber 1 and the condensation chamber 2.

[0054] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0055] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0056] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can be referred to each other.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat transfer device capable of absorbing vibration, characterized in that, It includes an evaporation chamber, a condensation chamber, and a connecting pipe. The evaporation chamber and the condensation chamber are respectively provided with an evaporation cavity and a condensation cavity. The connecting pipe includes a spiral elastic shock-absorbing section. The evaporation cavity and the condensation cavity are connected through the connecting pipe to form a closed space. A working fluid is added to the closed space.

2. The vibration-absorbing heat transfer device according to claim 1, characterized in that, The elastic shock-absorbing section is spring-shaped.

3. The heat transfer device capable of absorbing vibration according to claim 1, characterized in that, Two connecting pipes are provided, and the two ends of the two connecting pipes are respectively connected to the evaporation chamber and the condensation chamber to form a closed loop.

4. The vibration-absorbing heat transfer device according to claim 3, characterized in that, The evaporation chamber and the condensation chamber are provided with connecting pipes at both ends, and the connecting pipes are connected to the evaporation chamber and the condensation chamber through the connecting pipes.

5. The vibration-absorbing heat transfer device according to claim 1, characterized in that, The evaporation chamber is equipped with a liquid injection pipe.

6. The vibration-absorbing heat transfer device according to claim 1, characterized in that, Both the evaporation chamber and the condensation chamber include a contact shell and an end cap that are connected to each other.

7. The vibration-absorbing heat transfer device according to claim 6, characterized in that, The inner wall of the contact housing is provided with a plurality of protrusions spaced apart.

8. The vibration-absorbing heat transfer device according to claim 7, characterized in that, The protrusion and the contact housing are an integral structure.

9. The vibration-absorbing heat transfer device according to claim 6, characterized in that, The contact housing has an arc-shaped contact surface.

10. The vibration-absorbing heat transfer device according to claim 1, characterized in that, The evaporation chamber and the condensation chamber have several connection holes.

Images