Heat-conducting and insulating flexible connecting wire harness
By using a core structure composed of insulated thermal conductors and deformations between small precision instruments and small portable refrigeration mechanisms, combined with the isolation of the cladding layer, the thermal conductivity, insulation and flexibility problems of connections in ultra-low temperature environments are solved, and a complete machine design with low power consumption and miniaturization is achieved.
Patent Information
- Application Number
- CN202411752197.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-03-28
AI Technical Summary
The prior art is difficult to achieve high thermal conductivity, insulation, flexibility and thermal insulation connection between small precision instruments and small portable refrigeration mechanisms in ultra-low temperature environments, resulting in electromagnetic interference and vibration influence.
The core structure includes an insulating heat conductor and a deformation-shaped deformation is adopted. The insulating heat conductor and the thermal conductor are connected by insulating. The deformation is absorbed and damped by deformation. The cladding layer is used to isolate the external environment and reduce heat exchange.
Achieve high thermal conductivity and insulating connections in ultra-low temperature environments, reduce the power required for refrigeration mechanisms, prevent electromagnetic interference and vibration influence, and realize the miniaturization of the entire machine.
Smart Images
Figure CN119724727A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of heat-conducting insulating materials, in particular to a heat-conducting insulating flexible connecting harness. Background Art
[0002] Some small precision instruments need to be operated in an ultra-low temperature environment, so they need to be continuously cooled while they are working. In the prior art, in order to ensure that small precision instruments can work normally, traditional large refrigeration equipment is usually used to cool the working area, and then the small precision instruments are placed in the working area. This method can ensure that small precision instruments can operate normally in a suitable environment.
[0003] However, since large refrigeration equipment consumes high power and can usually only be installed in some special occasions, the use of small portable refrigeration to cool small precision instruments has the advantages of low power consumption and convenience.
[0004] The small portable refrigeration mechanism and the precision instrument need to be connected with corresponding flexible cables so that the heat at the precision instrument end can be transferred to the small portable refrigeration mechanism. However, due to the existence of the connecting cable, the small portable refrigeration mechanism may cause electromagnetic interference to the precision instrument through the connecting cable when it is working, and the vibration of the small portable refrigeration mechanism may also be transmitted through the cable to affect the normal operation of the precision instrument.
[0005] It can be seen that the connection between a small portable refrigeration mechanism and a precision instrument needs to have high thermal conductivity, insulation, flexibility, and thermal insulation relative to the outside world. There is currently no corresponding solution in the prior art to solve the above problems, and traditional flexible thermal conductive insulation materials are also difficult to use in ultra-low temperature environments. Summary of the invention
[0006] In view of the above problems, the present invention provides a thermally conductive and insulated flexible connecting harness for overcoming the above problems or at least partially solving the above problems.
[0007] The present invention provides the following scheme:
[0008] A thermally conductive and insulating flexible connecting harness, comprising:
[0009] A core body, the core body comprising at least one insulating heat conductor and at least one deformation body; two ends of the insulating heat conductor are connected to the first heat conductive core and the second heat conductive core in a one-to-one correspondence; two ends of the deformation body are connected to the second heat conductive core and the third heat conductive core in an end-to-end manner in a one-to-one correspondence;
[0010] A coating layer, the coating layer is arranged outside the core body, and the coating layer is used to isolate the core body from the external environment to reduce the heat exchange between the core body and the external environment;
[0011] Among them, the core is used to transfer the heat from the precision instrument end to the refrigeration mechanism; the insulating heat conductor is used to isolate the electrical transfer between the first heat-conducting core and the second heat-conducting core, and the deformation body is used to absorb energy through deformation to achieve the purpose of buffering and shock absorption; the material of the insulating heat conductor is a low-temperature resistant insulating heat-conducting material; the material of the deformation body is a flexible low-temperature resistant heat-conducting material.
[0012] Preferably, the insulating heat conductor is made of thermally conductive ceramic.
[0013] Preferably, the deformation body comprises a metal wire cluster and a spring arranged outside the metal wire cluster; the material of the metal wire cluster is any one of silver, copper and alloys thereof.
[0014] Preferably, the insulating heat conductor is connected to the corresponding heat-conducting core in an end-to-end manner or the insulating heat conductor is pressed against the corresponding heat-conducting core by a clamping body.
[0015] Preferably: it is characterized in that the material of the clamping body is a metal material whose thermal expansion coefficient is greater than the thermal expansion coefficient of the heat-conducting core.
[0016] Preferably, two ends of each of the metal wire cluster and the spring are connected to the second heat-conducting core and the third heat-conducting core in an end-to-end manner in a one-to-one manner by brazing.
[0017] Preferably, the first heat-conducting core, the second heat-conducting core and the third heat-conducting core are all made of any one of silver, copper and alloys thereof.
[0018] Preferably: the cladding layer comprises a reflective layer and a heat-insulating layer; the reflective layer is used to reduce radiation heat transfer between the external environment and the core through reflection.
[0019] Preferably, the reflective layer is made of thermal insulation aluminum film.
[0020] Preferably, the thermal insulation layer is made of any one of mineral wool and aerogel.
[0021] According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:
[0022] The embodiment of the present application provides a heat-conducting and insulating flexible connection harness. When precision instruments and equipment need to operate in an ultra-low temperature environment or remain in an ultra-low temperature environment, the connection harness is used to connect a small refrigeration mechanism to the precision instrument, which can effectively reduce unnecessary heat exchange during heat transfer. The internal core adopts a multi-stage structure with good heat conduction effect, reduces the power required by the refrigeration mechanism, and realizes miniaturization of the whole machine. At the same time, it has an insulating design and a flexible design, which can effectively prevent the electromagnetic interference and vibration of the refrigeration mechanism on the precision instrument.
[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0025] Figure 1 It is a schematic structural diagram of a thermally conductive and insulated flexible connecting harness provided by an embodiment of the present invention;
[0026] Figure 2 is a partially enlarged schematic diagram of a deformation body provided by an embodiment of the present invention;
[0027] Figure 3 It is a schematic diagram of a connection method between the insulating heat conductor and the first heat-conducting core and the second heat-conducting core provided by an embodiment of the present invention;
[0028] Figure 4 It is a schematic diagram of another connection method between the insulating heat conductor and the first heat-conducting core and the second heat-conducting core provided in an embodiment of the present invention.
[0029] Figure 5 yes Figure 4 Schematic diagram of the arrangement of the circumferential insulating heat conductor in the connection scheme.
[0030] In the figure: an insulating heat conductor 1, a deformation body 2, a metal wire cluster 21, a spring 22, a first heat-conducting core 3, a second heat-conducting core 4, a third heat-conducting core 5, a reflecting layer 6, a heat-insulating layer 7, and a clamping body 8. DETAILED DESCRIPTION
[0031] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.
[0032] See also Figure 1 , Figure 2 , a thermally conductive and insulated flexible connecting harness provided by an embodiment of the present invention, such as Figure 1 As shown, the wiring harness may include:
[0033] The core body comprises at least one insulating heat conductor 1 and at least one deformation body 2; the two ends of the insulating heat conductor 1 are connected to the first heat conductive core 3 and the second heat conductive core 4 respectively and one by one; the two ends of the deformation body 2 are connected to the second heat conductive core 4 and the third heat conductive core 5 respectively and one by one in an end-to-end manner; in specific implementation, the insulating heat conductor 1 is connected to the corresponding heat conductive core in an end-to-end manner or the insulating heat conductor is pressed against the corresponding heat conductive core by using a clamping body 8.
[0034] A coating layer, the coating layer is arranged outside the core body, and the coating layer is used to isolate the core body from the external environment to reduce the heat exchange between the core body and the external environment;
[0035] Among them, the core is used to transfer the heat from the precision instrument end to the refrigeration mechanism; the insulating heat conductor 1 is used to isolate the electrical transfer between the first heat-conducting core 3 and the second heat-conducting core 4, and the deformation body 2 is used to absorb energy by deformation to achieve the purpose of buffering and shock absorption; the material of the insulating heat conductor 1 is a low-temperature resistant insulating heat-conducting material; the material of the deformation body 2 is a flexible low-temperature resistant heat-conducting material.
[0036] The thermally conductive and insulated flexible connecting harness provided in the embodiment of the present application has an internal core composed of multiple sections, and the first core and the second core of the main thermal conductive component are insulated by the insulating thermal conductor 1. Under the premise of not affecting the normal thermal conduction, the electromagnetic interference caused by the refrigeration mechanism end to the precision instrument can be effectively reduced. Since the thermal conductive core cannot play a buffering and shock-absorbing role for the vibration generated by the refrigeration equipment, the present application uses a deformation body 2 to connect the second thermal conductive core 4 with the third thermal conductive core 5. The deformation body 2 plays a buffering and shock-absorbing role by deforming and absorbing energy, eliminating the influence of the vibration of the refrigeration mechanism on the precision instrument.
[0037] It can be seen that the connecting harness can be used stably in ultra-low temperature environments. While having high thermal conductivity, it has insulation and certain flexibility. The power required for the refrigerator is low. The use of this connecting harness can effectively realize the miniaturization of refrigeration mechanisms and precision instruments and other equipment.
[0038] The insulating thermal conductor 1 provided in the embodiment of the present application mainly functions to isolate the electrical transfer between the first thermal core 3 and the second thermal core 4. In order to adapt to use in ultra-low temperature environments, the embodiment of the present application can provide that the insulating thermal conductor 1 is made of thermally conductive ceramics. The overall thermal conductivity and insulation are achieved by the coordinated use of the thermal insulator and the thermal core. In practical applications, other insulating thermal conductors 1 that can be used in ultra-low temperature environments can also be selected. The insulating thermal conductor 1 prevents conduction on both sides while transferring heat. Thermally conductive ceramics or other low-temperature resistant insulating thermal conductive materials can be used. In low-temperature environments, the thermal core and the insulating thermal conductor 1 can be made of thermally conductive ceramics or other low-temperature resistant insulating thermal conductive materials. Figure 3 , Figure 4 The two connection methods provided use the different shrinkage rates of different materials in low temperature environments to achieve interference fit. Figure 4 When the connection method is used, the clamping body 8 is a metal material whose thermal expansion coefficient is greater than that of the thermal core. In a low temperature environment, the clamping body 8 clamps the insulating thermal conductor and the thermal core. The insulating thermal conductor can be split into an axial part and a circumferential part. In order to prevent the clamping body from damaging the circumferential insulating thermal conductor, a notch can be made in the circumferential insulating thermal conductor, or it can be split into several parts, such as Figure 5 shown.
[0039] The deformation body 2 provided in the embodiment of the present application needs to meet the requirement of being able to deform in an ultra-low temperature environment, and also needs to have good thermal conductivity. Therefore, the embodiment of the present application can provide that the deformation body 2 includes a metal wire cluster 21 and a spring 22 arranged outside the metal wire cluster 21. The metal wire cluster 21 and the spring 22 provide flexibility for the system, and play a role in buffering and shock absorption by deformation and energy absorption. The cross section of the metal wire cluster 21 is as follows Figure 2 shown.
[0040] In specific implementation, the embodiment of the present application can provide the metal wire cluster 21 with a material of any one of silver, copper and alloys thereof. The metal wire material can be selected from metals with excellent ductility and thermal conductivity such as silver, copper and alloys thereof.
[0041] In order to achieve efficient connection between the deformation body 2 and the second heat-conducting core 4 and the third heat-conducting core 5, the embodiment of the present application can also provide that the two ends of the metal wire cluster 21 and the spring 22 are respectively connected to the second heat-conducting core 4 and the third heat-conducting core 5 in an end-to-end manner by brazing.
[0042] When selecting the material of the thermal conductive core, it is necessary to ensure that the selected thermal conductive core has good thermal conductivity and can be used in ultra-low temperature environments. Therefore, the embodiment of the present application can provide that the material of the first thermal conductive core 3, the second thermal conductive core 4 and the third thermal conductive core 5 are all any one of silver, copper and their alloys. The thermal conductive core is the main heat transfer part, and the material can be common materials with high thermal conductivity such as silver, copper and their alloys, without considering electrical conductivity.
[0043] The coating layer provided in the embodiment of the present application can protect the core body, and at the same time can reduce the heat exchange between the core body and the external environment, and improve the thermal conductivity efficiency. The coating layer can adopt a variety of structural forms. For example, in one implementation, the embodiment of the present application can provide that the coating layer includes a reflective layer 6 and a thermal insulation layer 7; the reflective layer 6 is used to reduce the radiation heat transfer between the external environment and the core body through reflection.
[0044] Further, the material of the reflective layer 6 is a thermal insulation aluminum film. The material of the thermal insulation layer 7 is mineral wool or aerogel. The reflective layer 6 and the thermal insulation layer 7 can effectively reduce unnecessary heat exchange. The reflective layer 6 reduces the radiation heat transfer between the outside and the core by reflection. The thermal insulation aluminum film can be selected as the reflective layer 6. Because the thermal insulation aluminum film is covered by an insulating coating, the layer does not have conductivity. The thermal insulation layer 7 is a soft thermal insulation material, such as mineral wool or aerogel.
[0045] It can be understood that the metal wire cluster 21 is composed of metal filaments and has a certain flexibility. The outer covering spring 22 enables this part to play a role in shock absorption and energy absorption. The reflective layer 6 and the thermal insulation layer 7 both have good flexibility and have little effect on the shock absorption and energy absorption effect of the spring 22 and the metal wire cluster 21.
[0046] In summary, the thermally conductive and insulated flexible connecting harness provided by the present application can effectively reduce unnecessary heat exchange during heat transfer by connecting a small refrigeration mechanism to a precision instrument when the precision instrument needs to operate in a ultra-low temperature environment or remain in a ultra-low temperature environment. The internal core adopts a multi-segment structure with good heat conduction effect, reduces the power required by the refrigerator, and realizes miniaturization of the whole machine. At the same time, it has an insulating design and a flexible design, which can effectively prevent electromagnetic interference and vibration of the refrigerator on the precision instrument.
[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0048] It can be known from the description of the above implementation methods that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application or certain parts of the embodiments.
[0049] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without creative work.
[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims
1. A thermally conductive and insulated flexible connecting harness, characterized in that: include: A core, the core comprising at least one insulating heat conductor and at least one deformation body; The two ends of the insulating heat conductor are connected to the first heat conductive core and the second heat conductive core in a one-to-one manner; the two ends of the deformation body are connected to the second heat conductive core and the third heat conductive core in a one-to-one manner; A coating layer, the coating layer is arranged outside the core body, and the coating layer is used to isolate the core body from the external environment to reduce the heat exchange between the core body and the external environment; Among them, the core is used to transfer the heat from the precision instrument end to the refrigeration mechanism; the insulating heat conductor is used to isolate the electrical transfer between the first heat-conducting core and the second heat-conducting core, and the deformation body is used to absorb energy through deformation to achieve the purpose of buffering and shock absorption; the material of the insulating heat conductor is a low-temperature resistant insulating heat-conducting material; the material of the deformation body is a flexible low-temperature resistant heat-conducting material.
2. The thermally conductive and insulated flexible connecting harness according to claim 1, characterized in that: The insulating heat conductor is made of heat-conducting ceramic.
3. The thermally conductive and insulated flexible connecting harness according to claim 1, characterized in that: The deformation body comprises a metal wire cluster and a spring arranged outside the metal wire cluster; the material of the metal wire cluster is any one of silver, copper and alloys thereof.
4. The thermally conductive and insulated flexible connecting harness according to claim 3, characterized in that: The insulating heat conductor is connected to the corresponding heat-conducting core in an end-to-end manner or is pressed tightly against the corresponding heat-conducting core by a clamping body.
5. The thermally conductive and insulated flexible connecting harness according to claim 4, characterized in that: The material of the clamping body is a metal material whose thermal expansion coefficient is greater than that of the heat-conducting core.
6. The thermally conductive and insulated flexible connecting harness according to claim 3, characterized in that: The two ends of the metal wire cluster and the spring are respectively connected to the second heat-conducting core and the third heat-conducting core in an end-to-end manner by brazing.
7. The thermally conductive and insulated flexible connecting harness according to claim 1, characterized in that: The first heat-conducting core, the second heat-conducting core and the third heat-conducting core are all made of any one of silver, copper and alloys thereof.
8. The thermally conductive and insulated flexible connecting harness according to claim 1, characterized in that: The cladding layer includes a reflective layer and a heat-insulating layer; the reflective layer is used to reduce radiation heat transfer between the external environment and the core through reflection.
9. The thermally conductive and insulated flexible connecting harness according to claim 8, characterized in that: The material of the reflective layer is thermal insulation aluminum film.
10. The thermally conductive and insulated flexible connecting harness according to claim 8, characterized in that: The material of the thermal insulation layer is any one of mineral wool and aerogel.