Vacuum penetration electric component and vacuum heating container

Abstract

This invention relates to the field of heating container technology, and provides a vacuum penetration current-leading assembly and a vacuum heating container. The vacuum penetration current-leading assembly includes a supporting member, an insulating member, and at least one set of conductive leads. The supporting member has mounting holes, the insulating member is disposed within or mates with the mounting holes, and the conductive leads penetrate the insulating member. A first sealed connection is formed between the insulating member and the supporting member, and a second sealed connection is formed between the conductive leads and the supporting member, with the conductive leads being insulated from the supporting member. The vacuum heating container includes an inner housing, an outer shell, and the aforementioned current-leading assembly. The inner housing and the outer shell form a vacuum insulation layer, and a heating element is provided on the wall of the inner housing. The current-leading assembly is electrically connected to the heating element. This invention is advantageous in achieving stable power supply, insulation isolation, and reliable airtight sealing while maintaining vacuum insulation performance, and can integrate signal transmission or control connections as needed.

Description

Technical Field

[0001] This invention relates to the field of heating container technology, and more particularly to a vacuum penetration current-conducting assembly for a vacuum heating container and a vacuum heating container including the assembly. Background Technology

[0002] Currently, heating containers with vacuum insulation typically consist of an inner containment layer and an outer shell, with a vacuum insulation layer between them to achieve good insulation. To achieve vacuum heating, electrical energy is usually introduced through the vacuum layer to the area where the heating element is located to drive the heating element. However, introducing power lines in a vacuum environment faces many technical challenges. In existing technologies, the lead wires often fail to guarantee reliable sealing performance after penetrating the vacuum layer, easily leading to a decrease in vacuum level and thus affecting the insulation effect. Simultaneously, the lack of effective insulation between the conductive lead and the metal wall of the container may pose electrical safety hazards. Furthermore, existing power supply structures are usually complex, with cumbersome assembly processes, and struggle to integrate power supply and signal transmission requirements, limiting product reliability and application range. Therefore, there is an urgent need for a power supply assembly and vacuum heating container that can achieve stable power supply, reliable insulation, and a compact structure while maintaining vacuum sealing performance. Summary of the Invention

[0003] The purpose of this invention is to provide a vacuum penetration electrical lead assembly and a vacuum heating container including the vacuum penetration electrical lead assembly, so as to at least partially solve the problems of insufficient sealing reliability, need to improve insulation isolation reliability, and difficulty in integrating power supply lead-out with signal or control connection when existing vacuum heating containers make electrical connections through vacuum insulation structures.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A vacuum penetration power supply assembly for a vacuum heating container includes a support member, an insulating member, and at least one set of conductive leads. The support member has a mounting hole, the insulating member is disposed within or mates with the mounting hole, and the at least one set of conductive leads penetrates the insulating member. A first sealed connection is formed between the insulating member and the support member, and a second sealed connection is formed between the conductive leads and the insulating member. The conductive leads are insulated from the support member by the insulating member. The at least one set of conductive leads is used to electrically connect to a heating element of the vacuum heating container to form a power supply circuit for the heating element.

[0005] As an alternative implementation, the support member is an outer bottom or a mounting base.

[0006] As an optional implementation, the insulating element is a ceramic insulating element.

[0007] As an alternative implementation, the first sealing connection and / or the second sealing connection are formed by at least one of solder filling, brazing, glass sealing, or metallization sealing.

[0008] As an optional implementation, the solder is a silver-based solder, and the silver-based solder fills the entire circumference of the assembly gap between the conductive lead and the insulating component.

[0009] As an optional implementation, the vacuum penetration lead assembly further includes at least another set of conductive leads, which are used to electrically connect with a temperature sensing element and / or a temperature control system to form a signal loop or a control loop.

[0010] As an optional implementation, the conductive lead includes four Kovar alloy pins, two of which are used to form a power supply circuit, and the other two of which are used to form a signal circuit or a control circuit.

[0011] In addition, the present invention also provides a vacuum heating container, including an inner accommodating body, an outer shell, and a vacuum penetration current-conducting assembly as described above. The inner layer housing is connected to the outer shell and forms a vacuum insulation layer; The inner layer container has a heating element in its wall portion. The wall portion is a bottom wall, a side wall, or a transition wall portion located between the bottom wall and the side wall. The heating element is disposed on the wall portion of the inner layer container, formed in the wall portion, or thermally connected to the wall portion. The vacuum penetration current-conducting assembly is disposed in the container body mounting area of ​​the vacuum heating container and is electrically connected to the heating element.

[0012] As an optional implementation, the heating element is a metal thick-film electric heating element, which is disposed on the wall of the inner layer housing and is sintered at high temperature to form an integral heating structure with the wall.

[0013] When the heating element is a thick-film metal heating element, the combination of the thick-film metal heating element and the container wall forms an integrated heating structure, which helps to improve heat conduction efficiency, enhance the reliability of the combination between the heating element and the container wall, and extend the service life.

[0014] Beneficial effects: The vacuum penetration electrical lead assembly and vacuum heating container provided by this invention, through the structural cooperation of the supporting member, the insulating member, and the conductive lead, form a first sealed connection between the insulating member and the supporting member, and a second sealed connection between the conductive lead and the insulating member. The insulating member also provides insulation isolation between the conductive lead and the supporting member. This structure effectively solves the problem of simultaneously ensuring sealing, insulation, and power supply when making electrical connections through a vacuum insulation structure in a vacuum heating container. It helps maintain the airtightness of the vacuum insulation layer and achieves stable power transmission and electrical safety isolation.

[0015] Meanwhile, by configuring multiple sets of conductive leads, signal transmission and control connections can be expanded as needed to meet the requirements of temperature detection, heating control, and intelligent applications. Furthermore, in embodiments employing ceramic insulators in conjunction with Kovar alloy guide pins and using silver-based solder for circumferential full-circumference filling, the sealing reliability, temperature resistance, and operational reliability of the component can be further improved, thereby enhancing the structural layout flexibility and product adaptability of the vacuum heating container. Attached Figure Description

[0016] Figure 1 This is a schematic cross-sectional view of the vacuum heating container according to an embodiment of the present invention; Figure 2 This is a partially enlarged structural schematic diagram of the vacuum penetration current-guiding assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a vacuum heating container structure in an embodiment of the present invention, in which the heating element is disposed on the side wall; Figure 4 This is a schematic diagram of a vacuum heating container structure in which the heating element is disposed in the transition wall according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the electrical connection relationship of the container body temperature control according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the temperature control relationship of the cover-type temperature control according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the vacuum sealing structure according to an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 100, Vacuum heating container; 110, Inner housing; 111, Bottom wall; 112, Side wall; 113, Transition wall; 120, Outer shell; 130, Vacuum insulation layer; 140, Opening connection; 150, Cover; 210, Heating element; 221, Temperature sensing element; 222, Temperature control system; 223, Control circuit; 224, Communication module; 300, Vacuum penetration power supply assembly; 311, Outer bottom; 312. Side wall mounting base; 313, transition wall mounting base; 321, mounting hole; 331, insulating component; 341, heating conductive lead-out component; 342, temperature control conductive lead-out component; 343, Kovar alloy guide pin; 350, first sealing connection; 351, second sealing connection; 353, silver-based solder; 400, power supply circuit; 410, signal circuit or control circuit; 510, countersunk hole; 511, sealing hole; 520, glass sealing bead; 530, vacuum sealing area. Detailed Implementation

[0018] To make the objectives, technical solutions, and technical effects of the present invention clearer, embodiments of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Other implementation methods obtained by those skilled in the art based on the disclosed technical content of the present invention without creative effort should all fall within the protection scope of the present invention.

[0019] In the description of this invention, the terms "first," "second," etc., are used only to distinguish identical or similar technical features and should not be construed as indicating or implying relative importance, nor should they be construed as limiting the number of technical features. The terms "connection," "setup," "fitting," etc., should be interpreted broadly, for example, they can refer to fixed connections, detachable connections, direct connections, or indirect connections; they can refer to mechanical connections, electrical connections, thermal connections, or sealed connections, unless otherwise expressly defined in the text.

[0020] Example 1 Combination Figure 1 and Figure 2 As shown, this embodiment provides a vacuum penetration current-leading assembly 300 for a vacuum heating container 100. The vacuum heating container 100 has a vacuum insulation layer 130 and a heating element 210. The vacuum penetration current-leading assembly 300 is used to achieve penetration current-leading at the vacuum structure and maintain the airtightness of the vacuum insulation layer 130.

[0021] The vacuum penetration current-leading assembly 300 includes a support member, an insulating member 331, and at least one set of conductive leads. The support member has mounting holes 321, and the insulating member 331 is disposed within or cooperates with the mounting holes 321. At least one set of conductive leads penetrates the insulating member 331. In this embodiment, the conductive leads are four Kovar alloy conductors 343, which penetrate the insulating member 331.

[0022] The support member provides a mounting base for the insulator 331 and the conductive lead-out. The support member can be the outer bottom 311 of the vacuum heating container 100 or a separately mounted base. The mounting hole 321 is used to receive or position the insulator 331, allowing the insulator 331 to maintain a stable position relative to the support member.

[0023] The insulating element 331 can be configured as a block, column, ring, or other insulating structure that allows the conductive lead to pass through. The insulating element 331 can have a through hole adapted to the conductive lead. In this embodiment, the conductive lead is a Kovar alloy guide pin 343. After passing through the through hole, one end of the Kovar alloy guide pin 343 is used to connect to the heating element 210 or other internal electrical components, and the other end is used to connect to an external power supply or external control unit.

[0024] A first sealing connection 350 is formed between the insulating member 331 and the supporting member. The first sealing connection 350 is located between the outer periphery of the insulating member 331 and the wall of the mounting hole 321, and is used to seal any gas leakage channels that may be formed between the insulating member 331 and the supporting member.

[0025] A second sealing connection 351 is formed between the conductive lead and the insulating member 331. The second sealing connection 351 is located between the outer peripheral surface of the conductive lead and the inner peripheral surface of the through hole of the insulating member 331, and is used to seal any gas leakage channels that may form between the conductive lead and the insulating member 331. In this embodiment, the second sealing connection 351 is located between the outer peripheral surface of the Kovar alloy guide needle 343 and the inner peripheral surface of the through hole of the insulating member 331.

[0026] Through the cooperation of the first sealing connection 350 and the second sealing connection 351, the vacuum penetration lead assembly 300 can maintain airtightness while the conductive lead passes through the vacuum structure, reducing the risk of gas communication between the vacuum insulation layer 130 and the external environment.

[0027] The insulating element 331 is made of insulating material and is disposed between the conductive lead and the supporting member, thereby forming electrical isolation between the conductive lead and the supporting member. In this embodiment, the insulating element 331 is disposed between the Kovar alloy guide needle 343 and the supporting member, thereby forming electrical isolation between the Kovar alloy guide needle 343 and the supporting member. This reduces the risk of leakage, creepage, or abnormal discharge between the conductive lead and the metal supporting member, improving the electrical safety of the vacuum heating container 100.

[0028] This embodiment, through the structural cooperation of "supporting component - insulating component 331 - conductive lead-out component", enables the same penetration position to meet the requirements of electrical connection, airtight sealing and insulation isolation, and is suitable for products such as vacuum heating containers, vacuum heat preservation cups, vacuum thermos flasks, and vacuum electric heating inner liner.

[0029] Example 2 Based on Example 1, this embodiment further explains the form of the support component, the material of the insulating component, and the sealing connection method of the vacuum penetration current-leading assembly 300.

[0030] like Figure 1 and Figure 2 As shown, in one embodiment, the supporting member is an outer bottom 311. The outer bottom 311 can be part of the outer shell 120 or a separate bottom member connected to the outer shell 120. When the vacuum penetration current-leading assembly 300 is disposed in the bottom region of the vacuum heating container 100, the outer bottom 311 serves both to form the outer bottom surface of the container body and to support the insulating member 331 and the conductive lead-out member, thereby reducing the number of parts and lowering the assembly complexity.

[0031] like Figure 3 and Figure 4 As shown, in another embodiment, the supporting member is a mounting base. The mounting base can be a sidewall mounting base 312 or a transition wall mounting base 313. The sidewall mounting base 312 is used to mount the vacuum penetration current-leading assembly 300 to the sidewall region of the vacuum heating container 100; the transition wall mounting base 313 is used to mount the vacuum penetration current-leading assembly 300 to the transition region between the bottom wall 111 and the side wall 112. By providing different types of mounting bases, the vacuum penetration current-leading assembly 300 can adapt to different heating element 210 arrangement positions and different container structures.

[0032] The insulating component 331 is preferably a ceramic insulating component. Ceramic materials have high insulation strength, heat resistance, and chemical stability, making them suitable for maintaining stability in the high-temperature manufacturing process and hot-cold cycling environment of the vacuum heating container 100. The ceramic insulating component also provides reliable support for the conductive leads and forms electrical isolation between the conductive leads and the metal support components.

[0033] The first sealing connection 350 and / or the second sealing connection 351 can be formed by solder filling. Specifically, during the assembly process, the insulating component 331 can be positioned in the mounting hole 321 first, and the conductive lead can be inserted into the through hole of the insulating component 331; then, solder is placed in the assembly gap between the insulating component 331 and the mounting hole 321, and in the assembly gap between the conductive lead and the insulating component 331; after heating, the solder melts and wets the surface of the adjacent components, and after cooling and solidification, the first sealing connection 350 and / or the second sealing connection 351 are formed.

[0034] In another embodiment, the insulating component 331 and the mounting hole 321 can also be pre-positioned through an interference fit, a limiting structure, a threaded structure, or a snap-fit ​​structure, and then an airtight seal can be formed by solder filling, brazing, glass sealing, or metallization sealing. The aforementioned interference fit, limiting structure, threaded structure, or snap-fit ​​structure is mainly used for assembly positioning or auxiliary fixing, and should not be construed as necessarily forming a high-vacuum airtight seal on its own.

[0035] Preferably, the first sealing connection 350 and / or the second sealing connection 351 can be formed using silver-based solder 353. More specifically, the second sealing connection 351 can be formed by filling the entire circumference of the assembly gap between the conductive lead and the insulating member 331 with silver-based solder 353. This circumferential filling refers to the formation of a continuous closed sealing ring between the outer periphery of the conductive lead and the inner periphery of the through hole in the insulating member 331 by the silver-based solder 353, thereby reducing leakage channels between the conductive lead and the insulating member 331. The first sealing connection 350 can also be formed in a similar manner, i.e., by filling the circumference of the assembly gap between the insulating member 331 and the mounting hole 321 with silver-based solder 353, thus forming a continuous sealing structure between the outer periphery of the insulating member 331 and the hole wall of the mounting hole 321.

[0036] Silver-based solder 353 exhibits good wettability and heat resistance, enabling it to form a stable connection between the conductive lead and the insulating component 331. For connections between ceramic insulators and metal conductive leads, the bonding reliability of the silver-based solder 353 to the ceramic surface can be improved through ceramic metallization, brazing, or other adaptive processes. With this structure, the first sealing connection 350 and the second sealing connection 351 can achieve a leakage rate level that meets the requirements for use in vacuum-insulated containers, and can maintain good structural stability under thermal cycling conditions.

[0037] Example 3 This embodiment further explains the arrangement of multiple sets of conductive leads in the vacuum penetration current-leading assembly 300 and their electrical connection function.

[0038] like Figure 5As shown, in one embodiment, the vacuum penetration electrical lead assembly 300 includes a first conductive lead group and a second conductive lead group. The first conductive lead group may include a heating conductive lead 341 for forming a power supply circuit 400 to provide electrical energy to the heating element 210; the second conductive lead group may include a temperature control conductive lead 342 for forming a signal circuit or control circuit 410 to transmit temperature detection signals, control signals, or switching signals. By integrating multiple sets of conductive leads on the same insulating component 331, it is possible to avoid setting separate holes for penetrating the vacuum layer for signal transmission, thereby reducing weak points in the seal and improving the overall airtight reliability of the container.

[0039] In a preferred embodiment, the plurality of conductive leads may specifically be four Kovar alloy conductors 343. Two of the Kovar alloy conductors 343 serve as heating conductive leads 341, used to connect an external power supply to the heating element 210, thereby forming a power supply circuit 400; the other two Kovar alloy conductors 343 serve as temperature control conductive leads 342, used to connect a temperature sensing element 221 to a control circuit and / or an external control unit, thereby forming a signal circuit or control circuit 410.

[0040] When the insulating component 331 is a ceramic insulating component, the Kovar alloy guide pin 343 has thermal expansion characteristics that are well matched with ceramic materials, making it suitable for use with the insulating component 331. During the manufacturing and use of the vacuum heating container 100, the conductive leads, insulating component 331, and supporting components will experience temperature changes. Using the Kovar alloy guide pin 343 helps reduce the risk of sealing layer cracking, detachment, or micro-leakage caused by differences in thermal expansion.

[0041] The four Kovar alloy guide pins 343 can be arranged in parallel through the insulating component 331, or they can be arranged in a matrix, ring, or other forms depending on the shape of the insulating component 331, the installation space, and the electrical clearance requirements. A predetermined distance is maintained between each Kovar alloy guide pin 343 to meet insulation and assembly requirements.

[0042] This embodiment integrates the power supply circuit 400 with the signal circuit or control circuit 410, enabling the vacuum penetration current-leading assembly 300 to meet the power supply requirements of the heating element 210, as well as adapt to temperature detection, temperature control feedback, and control requirements.

[0043] Example 4 This embodiment provides a vacuum heating container 100, which may include the vacuum penetration current-conducting assembly 300 described in any of the preceding embodiments.

[0044] like Figure 1As shown, the vacuum heating container 100 includes an inner housing 110, an outer shell 120, a vacuum insulation layer 130, a heating element 210, and a vacuum penetration current-conducting assembly 300. The inner housing 110 is used to hold the medium to be heated, such as water, beverages, food, or other heatable materials. The outer shell 120 is disposed outside the inner housing 110 to form the external structure of the container and to provide protection for the inner housing 110.

[0045] The inner container 110 is connected to the outer shell 120, forming a space between them. Specifically, the inner container 110 and the outer shell 120 can form a closed space at the opening connection 140 by welding, edge rolling, sealing, or other connection methods. After being evacuated, this space forms a vacuum insulation layer 130 to reduce heat transfer between the inner container 110 and the external environment.

[0046] Combination Figure 1 , Figure 3 and Figure 4 As shown, the inner layer housing 110 has a heating element 210 on its wall. The wall may include a bottom wall 111, a side wall 112, and a transition wall 113 located between the bottom wall 111 and the side wall 112. The heating element 210 may be disposed on the bottom wall 111, the side wall 112, or the transition wall 113, or it may be disposed in at least two of the aforementioned regions. The heating element 210 may be disposed on the surface of the inner layer housing 110 wall facing the vacuum insulation layer 130, or it may be formed within the wall, or it may be thermally connected to the wall via a heat-conducting medium or a heat-conducting structure.

[0047] In one embodiment, the heating element 210 is disposed on the surface of the inner container 110 wall facing the vacuum insulation layer 130. This arrangement reduces the risk of direct contact between the heating element 210 and the medium to be heated inside the container, and facilitates electrical connection via the vacuum penetration lead assembly 300. In other embodiments, the heating element 210 can be a heating wire, heating film, heating plate, or other electric heating structure, and can be arranged according to the container structure and heating requirements.

[0048] Combination Figure 1 , Figure 3 and Figure 4 As shown, the vacuum penetration current-conducting assembly 300 can be disposed in the mounting area of ​​the container body and electrically connected to the heating element 210. Specifically, in Figure 1 In the illustrated embodiment, the mounting area may be located at the outer bottom 311; Figure 3 In the illustrated embodiment, the mounting area can be located at the sidewall mounting base 312; Figure 4In the illustrated embodiment, the mounting area can be located at the transition wall mounting base 313. Therefore, the vacuum penetration current-conducting assembly 300 can accommodate the arrangement requirements of the heating element 210 at different locations such as the bottom wall 111, side wall 112, or transition wall 113.

[0049] One end of the conductive lead is located on the outside of the container, and the other end extends into the vacuum insulation layer 130 or close to the heating element 210 to achieve an electrical connection between the external power supply module and the heating element 210. Through the vacuum penetration electrical lead assembly 300, external electrical energy can be introduced into the heating element 210 without compromising the airtightness of the vacuum insulation layer 130.

[0050] With the above structure, the vacuum heating container 100 can simultaneously have vacuum insulation and electric heating functions, and can select different power supply positions such as the bottom, side wall or transition wall according to different product structures, thereby improving the structural adaptability and assembly flexibility of the vacuum heating container 100.

[0051] Example 5 This embodiment further explains the location and specific type of the heating element 210 in the inner container 110 wall of the vacuum heating container 100.

[0052] like Figure 1 As shown, in one embodiment, the heating element 210 can be disposed on the bottom wall 111 of the inner container 110. The bottom wall 111 is close to the bottom region of the medium to be heated, and heat can be transferred upward from the bottom, which is suitable for heating containers that require rapid heating. In this case, the vacuum penetration lead assembly 300 can be disposed at the outer bottom 311 in order to shorten the connection path between the conductive lead and the heating element 210.

[0053] like Figure 3 As shown, in another embodiment, the heating element 210 can be disposed on the side wall 112 of the inner housing 110. The side wall 112 has a large heat exchange area, which is beneficial to improving heating uniformity and reducing the risk of local overheating at the bottom. In this case, the vacuum penetration lead assembly 300 can be disposed at the side wall mounting base 312, so that the conductive lead corresponds to the heating element 210 disposed on the side wall 112.

[0054] like Figure 4 As shown, in another embodiment, the heating element 210 can be disposed in the transition wall portion 113 between the bottom wall 111 and the side wall 112. The transition wall portion 113 combines the structural characteristics of both the bottom region and the side wall region, and the heating element 210 can be arranged according to the container shape, power requirements, and assembly space. In this case, the vacuum penetration power supply assembly 300 can be disposed at the transition wall portion mounting base 313 to accommodate the power supply requirements of the heating element 210 at the transition wall portion 113.

[0055] In some embodiments, the heating element 210 may be disposed on any one of the bottom wall 111, side wall 112, and transition wall 113, or simultaneously disposed on at least two of the aforementioned regions. Accordingly, the vacuum penetration current-conducting assembly 300 may be disposed on the outer bottom 311, side wall mounting base 312, or transition wall mounting base 313, depending on the arrangement position of the heating element 210, to improve the structural adaptability and assembly flexibility of the vacuum heating container 100.

[0056] In some preferred embodiments, the heating element 210 can be a thick-film metal heating element. The heating element 210 can be disposed on a stainless steel substrate on the wall of the inner layer housing 110 and formed into an integral heating structure by high-temperature sintering. Specifically, the heating element 210 can be formed on the surface of the stainless steel substrate at the bottom wall 111, side wall 112 or transition wall 113, and form a firm bond with the corresponding wall.

[0057] When the heating element 210 is a thick-film metal heating element, the connection between the heating element 210 and the inner container 110 is highly reliable, and heat can be quickly transferred to the inner container 110 after generation, which helps to reduce interfacial thermal resistance and improve heating response speed. The pattern and power density of the heating element 210 can also be designed according to the container specifications, heating area and power requirements to adapt to the product structure of different vacuum heating containers 100.

[0058] In some embodiments, the heating element 210 includes an insulating dielectric layer, a resistance heating layer, an electrode layer, and a protective layer sequentially disposed on the surface of a stainless steel substrate. The insulating dielectric layer serves to electrically insulate the resistance heating layer from the stainless steel substrate. The resistance heating layer generates heat after being energized. The electrode layer is used to electrically connect to the conductive leads in the vacuum penetration current-leading assembly 300. The protective layer covers and protects the resistance heating layer. These layers can be formed on the wall surface of the inner layer housing 110 by printing, coating, or sintering processes.

[0059] Example 6 This embodiment further explains the temperature control method of the vacuum heating container 100.

[0060] like Figure 5 As shown, in one embodiment, the vacuum heating container 100 can employ a body-type temperature control structure. The temperature sensing element 221 can be disposed within the container body or at a location capable of detecting the temperature of the inner containment 110, and is connected to a control circuit or external control unit via a temperature-controlled conductive lead-out 342. The temperature sensing element 221 can be a thermistor, temperature sensor, temperature control switch, or other element capable of detecting temperature or responding to temperature changes.

[0061] In this embodiment, the control circuit or external control unit can control the operating state of the heating element 210 based on the temperature signal fed back by the temperature detection element 221. The control circuit can be located on the outer bottom 311, in the base, or in the external control unit to adapt to the structural layout and control method of different products.

[0062] In this embodiment, the vacuum penetration conductive lead assembly 300 can simultaneously perform the functions of heating power supply and temperature signal transmission. Specifically, the heating conductive lead 341 can be used to supply power to the heating element 210, and the temperature control conductive lead 342 can be used to transmit temperature detection signals or control signals. Thus, the vacuum penetration conductive lead assembly 300 can achieve power supply output from the heating element 210 and temperature control signal transmission across the vacuum layer while maintaining the airtightness of the vacuum insulation layer 130. This structure is suitable for vacuum heating containers 100 that require precise temperature control or closed-loop control.

[0063] like Figure 6 As shown, in another embodiment, the vacuum heating container 100 can employ a lid-type temperature control structure or an external temperature control structure. The temperature sensing element and / or temperature control system can be disposed in the lid 150 or in an external control unit used in conjunction with the vacuum heating container 100.

[0064] exist Figure 6 In the illustrated embodiment, a temperature control system 222 may be installed inside the cover 150. The temperature control system 222 may include a temperature sensor, a signal processing circuit, and a communication module 224. The temperature sensor may be used to detect the temperature of the liquid or steam inside the container, or to detect the temperature of the thermally coupled area between the cover 150 and the container body. The communication module 224 may be used to transmit temperature signals to the control circuit 223 via wired or wireless means, and the control circuit 223 controls the operating state of the heating element 210 based on the received temperature signals.

[0065] In a lid-type or external temperature control structure, the temperature signal can be transmitted without passing through the vacuum penetration power supply assembly 300. In this case, the vacuum penetration power supply assembly 300 can only serve as the power supply lead-out function for the heating element 210. Therefore, a two-pin power supply structure or a multi-pin structure integrating heating power supply and temperature signal transmission can be selected according to the product's functional positioning, thereby improving the product design flexibility of the vacuum heating container 100.

[0066] Example 7 This embodiment further explains the vacuum sealing structure and manufacturing process of the vacuum heating container 100.

[0067] like Figure 7As shown, the outer bottom 311 is provided with a countersunk hole 510 and a sealing hole 511. The countersunk hole 510 is used to place the glass sealing bead 520, and the sealing hole 511 communicates with the interlayer space between the inner layer container 110 and the outer shell 120, and can also serve as a vacuum channel. The countersunk hole 510 and the sealing hole 511 together form a vacuum sealing area 530.

[0068] During manufacturing, the inner housing 110 can be connected to the outer shell 120 to form a space between them. The vacuum penetration current-conducting assembly 300 can be installed in the corresponding mounting area of ​​the container body according to the aforementioned embodiment and electrically connected to the heating element 210. Subsequently, the glass sealing bead 520 can be placed in the recessed hole 510, and the space between them can be evacuated through the sealing hole 511.

[0069] During the vacuuming and sealing process, the container body and / or the vacuum-sealed area 530 can be heated. Heating promotes the removal of residual and adsorbed gases from the interlayer space and softens or melts the glass beads 520 during sealing, thus sealing the sealing hole 511. After cooling, the glass beads 520 form a sealing structure in the vacuum-sealed area 530, thereby isolating the vacuum insulation layer 130 from the external environment. Because the vacuum penetration current-leading assembly 300 forms an airtight fit through the insulating component 331, the conductive lead-out component, and the first sealing connection 350 and / or the second sealing connection 351, the current-leading penetration position can still maintain high sealing reliability during the above process.

[0070] Through the aforementioned vacuum sealing structure, the vacuum penetration electrical lead assembly 300 is compatible with the vacuum sealing process of the vacuum heating container 100. This structure can reduce the impact of the electrical lead penetration structure on the airtightness of the vacuum insulation layer 130 while achieving electrical connection of the heating element 210, thus helping to reduce production complexity and improve manufacturing consistency.

[0071] The above description is merely a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. For those skilled in the art, equivalent substitutions or combinations can be made to the structure, materials, connection methods, arrangement positions, manufacturing processes, and control methods in the above embodiments without departing from the technical concept of the present invention, and all such substitutions or combinations should be included within the scope of protection of the present invention. The scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A vacuum-penetrating electrical feed assembly for a vacuum heating vessel, characterized by, Includes supporting components, insulating components, and at least one set of conductive leads; The support member is used to be installed in the container body mounting area of ​​the vacuum heating container. The support member is provided with mounting holes. The insulating member is disposed in the mounting holes or is configured to cooperate with the mounting holes. The at least one set of conductive leads penetrates the insulating member. A first sealing connection is formed between the insulating component and the supporting member, and a second sealing connection is formed between the conductive lead and the insulating component. The first sealing connection and the second sealing connection are used to seal the corresponding gas leakage channels, and the conductive lead and the supporting member are insulated and isolated from each other by the insulating component. The at least one set of conductive leads is used to be electrically connected to the heating element of the vacuum heating container to form a power supply circuit for the heating element.

2. The vacuum breakthrough electrical feedthrough assembly of claim 1, wherein, The supporting member is an outer bottom or a mounting base, and the mounting base includes a side wall mounting base or a transition wall mounting base.

3. The vacuum breakthrough electrical feedthrough assembly of claim 1, wherein, The insulating component is a ceramic insulating component.

4. The vacuum breakthrough electrical feedthrough assembly of claim 1, wherein, The first sealing connection and / or the second sealing connection are formed by solder filling, brazing, glass sealing or metallization sealing.

5. The vacuum breakthrough electrical feedthrough assembly of claim 4, wherein, The first sealing connection and / or the second sealing connection are formed by silver-based solder; wherein the silver-based solder fills circumferentially along the assembly gap between the insulating element and the mounting hole to form the first sealing connection; and / or, the silver-based solder fills the entire circumference of the assembly gap between the conductive lead and the insulating element to form a continuous annular sealing structure of the second sealing connection.

6. The vacuum breakthrough electrical feedthrough assembly of claim 1, wherein, The vacuum penetration current-leading assembly also includes at least another set of conductive leads, which are used to form a signal circuit or a control circuit.

7. The vacuum breakthrough electrical feedthrough assembly of claim 6, wherein, The conductive lead includes four Kovar alloy pins, two of which are used to form the power supply circuit, and the other two are used to form a signal circuit or a control circuit.

8. A vacuum heating vessel, characterized by Includes an inner housing, an outer shell, and a vacuum penetration current-guiding assembly as described in any one of claims 1 to 7; The inner layer housing is connected to the outer shell and forms a vacuum insulation layer; The inner layer housing has a heating element in its wall portion, which includes a bottom wall, a side wall, or a transition wall portion between the bottom wall and the side wall. The heating element is disposed on the wall portion, formed in the wall portion, or thermally connected to the wall portion. The vacuum penetration current-conducting assembly is disposed in the container body mounting area of ​​the vacuum heating container and is electrically connected to the heating element.

9. The vacuum heating vessel according to claim 8, characterized in that The vacuum heating container also includes a temperature detection element or a temperature control system. The temperature detection element or temperature control system is electrically connected to the control circuit through a conductive lead in the vacuum penetration current-leading assembly to transmit temperature detection signals, control signals, or switching signals.

10. The vacuum heating vessel of claim 8, wherein, The heating element is a metal thick-film electric heating element. The wall of the inner layer housing includes a stainless steel substrate. The metal thick-film electric heating element is disposed on the wall of the inner layer housing and is sintered at high temperature to form an integrated heating structure with the wall.

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