Heat preservation container and manufacturing method thereof

Abstract

The invention relates to a heat preservation container and a manufacturing method thereof.The heat preservation container comprises a non-metal container body, a metal sealing component and a first connecting solder layer, the non-metal container body comprises a shell and an inner container, the top ends of the shell and the inner container are fixedly connected in a sealed mode, and a vacuumizing opening is formed in the end face of the bottom end of the shell; the metal sealing component is of a hollow structure with one end open and the other end closed in the circumferential direction, and the open end of the metal sealing component is an annular embedding end which is matched with the vacuumizing opening in shape and can be inserted into the vacuumizing opening in a clearance fit mode. The first connecting solder layer is arranged between the outer wall of the annular embedded end and the inner wall of the vacuumizing opening, and the non-metal device body and the metal sealing component are connected through the first connecting solder layer. According to the heat preservation container, the shell and the inner container are integrally formed and manufactured through the non-metal materials which are not prone to being corroded by acidic substances, the problems that the metal materials are prone to being corroded by the acidic substances and the surface layers are prone to being scratched in the cleaning process are solved, and the heat preservation container can store the acidic substances while improving the heat preservation and cold preservation effects.

Description

Technical Field

[0001] This invention relates to the field of thermal insulation container technology, and in particular to a thermal insulation container and its manufacturing method. Background Technology

[0002] Currently, insulated cups mainly come in two types: non-metallic and metallic. Traditional non-metallic insulated cups, such as double-walled glass or double-walled ceramic cups, have inner and outer wall layers, but due to material limitations, it's difficult to create a vacuum between them. Therefore, heat transfer still exists, limiting their ability to maintain temperature for extended periods and causing burns. Traditional stainless steel vacuum insulated cups, while capable of long-term temperature retention, have a stainless steel inner liner that is not suitable for storing acidic substances. The stainless steel vacuum liner's surface undergoes an electrolytic process to enhance its rust resistance; however, using hard cleaning materials can scratch it, leading to rust. Deep stains such as tea stains are also more difficult to remove. Summary of the Invention

[0003] The first objective of this invention is to provide an insulated container that can provide long-lasting heat preservation and cold preservation effects, while also being able to store acidic substances and not easily scratched or rusted.

[0004] A second objective of this invention is to provide a method for manufacturing the above-mentioned heat-insulating container.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] In a first aspect of this application, an insulated container is provided, comprising:

[0007] The non-metallic body includes an outer shell and an inner liner that are sealed and fixed at the top, and a vacuum port is provided on the bottom end face of the outer shell;

[0008] The metal sealing component is a structure that is open at one end, closed at the other end and circumferentially, and hollow inside. The open end of the metal sealing component is adapted to the shape of the vacuum port and can be inserted into the annular embedded end of the vacuum port with a gap fit.

[0009] A first connecting solder layer is disposed between the outer wall of the annular embedded end and the inner wall of the vacuum port, connecting the non-metallic body to the metal sealing component.

[0010] In one possible implementation, the metal sealing member includes:

[0011] The metal ring sleeve is a sleeve that is open at both ends and closed in the circumference, with the first end of the metal ring sleeve forming the annular embedded end;

[0012] A metal base is disposed at the second end of the metal ring to seal the second end of the metal ring. A gas adsorbent is disposed on the surface of the metal base facing the first end of the metal ring, and a vacuum slit is provided on the metal base.

[0013] In one possible implementation, the metal ring includes a planar annular base, a first sleeve, and a second sleeve. The first sleeve extends from the inner edge of the planar annular base toward a first end of the metal ring, and the end of the first sleeve away from the planar annular base forms the annular embedded end. The second sleeve extends from the outer edge of the planar annular base toward a second end of the metal ring, and the end of the second sleeve away from the planar annular base is engaged with the metal base.

[0014] In one possible implementation, at least one annular protrusion is provided on the surface of the planar annular base facing the bottom end of the housing. The annular protrusion is used to contact and engage with the bottom end of the housing when the annular insert end is inserted into the vacuum port. A second connecting solder layer is provided between the annular protrusion closest to the first sleeve and the first sleeve, and the second connecting solder layer is connected to the first connecting solder layer.

[0015] In one possible implementation, a plurality of annular protrusions are arranged radially at intervals on the surface of the planar annular base facing the bottom end of the housing, and a third connecting solder layer is provided between two adjacent annular protrusions.

[0016] In one possible implementation, the axial dimension of the annular protrusion furthest from the first sleeve is greater than the axial dimension of the other annular protrusions, and the annular protrusion furthest from the first sleeve is used to contact and engage with the bottom end of the housing.

[0017] In one possible implementation, an annular groove is provided on the surface of the planar annular base facing away from the bottom end of the outer shell, corresponding to the position of the annular protrusion.

[0018] In one possible implementation, the second sleeve portion has a first extension portion extending radially at one end away from the planar annular base portion, and a second extension portion extending upright in a direction away from the first end of the metal ring sleeve is provided at the outer edge of the first extension portion. The first extension portion and the second extension portion form a groove for accommodating the metal bottom and limiting the metal bottom.

[0019] In one possible implementation, the bottom end of the outer casing is provided with a recessed groove extending towards the top, the vacuum port is disposed at the bottom of the groove, the metal sealing member is at least partially disposed within the groove, and the metal sealing member has a gap in the radial direction between itself and the circumferential wall of the groove.

[0020] In one possible implementation, the insulated container further includes a non-metallic base that is connected to the bottom of the non-metallic body to cover the metal sealing component.

[0021] In one possible implementation, the bottom circumferential outer wall of the non-metallic body is flush with the circumferential outer wall of the non-metallic base.

[0022] In one possible implementation, an enamel coating is provided on the inner and / or outer walls of the outer shell of the non-metallic vessel body and the inner and / or outer walls of the inner liner.

[0023] In a second aspect of this application, a method for manufacturing an insulated container is provided, comprising the steps of:

[0024] Manufacture a non-metallic body and open a vacuum port at the bottom end face of the non-metallic body;

[0025] Manufacture metal sealing components, including the metal ring and metal base of the metal sealing components;

[0026] Connect the non-metallic body to the metal ring. Invert the non-metallic body and insert the annular embedded end of the metal ring into the vacuum port. Fill the space between the annular embedded end and the vacuum port with connecting solder and heat and melt the solder to form a first connecting solder layer between the annular embedded end and the vacuum port, thus connecting the metal ring to the non-metallic body.

[0027] Connect the metal ring to the metal base, weld the metal ring to the metal base, evacuate through the vacuum seam of the metal base, and seal the vacuum seam in a vacuum environment.

[0028] As can be seen from the above technical solutions, the present invention discloses a heat-insulating container, which includes a non-metallic body, a metal sealing component, and a first connecting solder layer. The non-metallic body includes an outer shell and an inner liner that are sealed and fixed at the top. A vacuum port is provided on the bottom end face of the outer shell. The metal sealing component has a structure that is open at one end, closed at the other end and circumferentially, and hollow inside. The open end of the metal sealing component is adapted to the shape of the vacuum port and can be inserted into the annular embedded end of the vacuum port with a gap fit. The first connecting solder layer is disposed between the outer wall of the annular embedded end and the inner wall of the vacuum port, connecting the non-metallic body and the metal sealing component.

[0029] It is evident that the aforementioned insulated container adopts a structure combining non-metallic and metallic materials. The outer shell and inner liner are manufactured in one piece using non-metallic materials that are not easily corroded by acidic substances. There is no contact between the metal materials and the contents of the cup, which avoids the problem of metal materials being easily corroded by acidic substances and the surface being easily scratched during the cleaning process. In this way, the aforementioned insulated container can store acidic substances while improving the heat preservation and cold preservation effect. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A cross-sectional view of the heat-insulating container provided in an embodiment of the present invention;

[0032] Figure 2 This is a cross-sectional view of the metal ring of the metal sealing component of an insulated container provided in one embodiment of the present invention;

[0033] Figure 3 A cross-sectional view of the metal ring of the metal sealing component of the insulated container provided in another embodiment of the present invention;

[0034] Figure 4 A cross-sectional view of the metal ring of the metal sealing component of the insulated container provided in another embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the metal bottom of the metal sealing component of the insulated container provided in an embodiment of the present invention.

[0036] In the picture:

[0037] 100 is a non-metallic body; 110 is an outer shell; 120 is an inner liner; 200 is a metal sealing component; 210 is a metal ring; 211 is a planar annular base; 212 is a first sleeve; 213 is a second sleeve; 214 is a first extension; 215 is a second extension; 216 is an annular protrusion; 217 is an annular groove; 220 is a metal bottom; 221 is a vacuum slit; 300 is a groove. Detailed Implementation

[0038] One of the core aspects of this invention is to provide an insulated container whose structural design enables it to have long-lasting heat preservation and cold preservation effects, while also enabling it to store acidic substances and making it less susceptible to scratches and rust.

[0039] Another key aspect of this invention is to provide a method for manufacturing the aforementioned heat-insulating container.

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] An insulated container is disclosed in this embodiment of the invention, such as... Figure 1 As shown, the insulated container includes a non-metallic body 100, a metal sealing component 200, and a first connecting solder layer.

[0042] The non-metallic body 100 can be made of glass, ceramic, or a high-temperature resistant, corrosion-resistant, and chemically stable polymer material, such as plastic. Compared to metallic materials, these non-metallic materials are not prone to rust and are not easily corroded by acidic substances, eliminating the need for an electrolytic process on the inner surface of the inner liner 120 to enhance its rust-proof function. The non-metallic body 100 includes a top-sealed and fixedly connected outer shell 110 and inner liner 120, with a vacuum port provided at the bottom end face of the outer shell 110.

[0043] The metal sealing component 200 can be made of rust-resistant metal materials such as stainless steel, aluminum alloy, magnesium alloy, and copper alloy. The metal sealing component 200 has an open end, a closed circumferential end, and a hollow interior. The open end of the metal sealing component 200 is adapted to the shape of the vacuum port and can be inserted into the annular insert end of the vacuum port with a gap fit. The metal sealing component 200 does not come into contact with the contents of the non-metallic body 100, is not corroded by acidic substances, and metal materials are easier to weld than non-metallic materials. Utilizing this characteristic, a vacuum seam 221 can be pre-reserved on the metal sealing component 200 during manufacturing to facilitate welding and sealing, thereby achieving vacuum treatment of the insulation interlayer formed by the outer shell 110, the inner liner 120, and the metal sealing component 200.

[0044] The connecting solder used in the first connecting solder layer includes, but is not limited to, active metal solder and oxide solder. The first connecting solder layer is disposed between the outer wall of the annular embedded end and the inner wall of the vacuum port, connecting the non-metallic body 100 and the metal sealing member 200.

[0045] The non-metallic body 100 and the metal sealing component 200 are sealed together by a first connecting solder layer to form a sealed thermal insulation interlayer. The thermal insulation interlayer can be vacuumed before sealing, or filled with thermal insulation material, or filled with thermal insulation material and then vacuumed to improve thermal insulation performance.

[0046] Furthermore, the expansion coefficients of the non-metallic body 100, the metal sealing component 200, and the first connecting solder layer are different during cooling. The expansion coefficient of the non-metallic body 100 is smaller than that of the first connecting solder layer, and the expansion coefficient of the first connecting solder layer is smaller than that of the metal sealing component 200. During the cooling process after welding, the metal sealing component 200 has the largest expansion coefficient. When the outer wall of its annular embedded end and the inner wall of the vacuum port of the non-metallic body 100 melt the connecting solder, the temperature will affect the compression of the connecting solder between them, enhancing the flow of the connecting solder between them and forcing the connecting solder to fill the gap between them. In the subsequent cooling process, the gap between the outer wall of the annular embedded end and the inner wall of the vacuum port of the non-metallic body 100 increases slightly, thereby pulling the connecting solder to further fill the gap between the outer wall of the annular embedded end and the inner wall of the vacuum port of the non-metallic body 100, ensuring the connection effect between the metal sealing component 200 and the non-metallic body 100.

[0047] Compared with the prior art, the insulated container provided in this embodiment of the invention adopts a structure combining non-metallic and metallic materials. The outer shell 110 and inner liner 120 are integrally molded using non-metallic materials that are not easily corroded by acidic substances. There is no contact between the metal material and the contents of the cup, which avoids the problem that the metal material is easily corroded by acidic substances and that the surface is easily scratched during the cleaning process. In this way, the above-mentioned insulated container can improve the heat preservation and cold preservation effect, while also being able to store acidic substances, and can ensure the connection strength between the non-metallic body 100 and the metal sealing component 200, preventing the seal between the non-metallic body 100 and the metal sealing component 200 from cracking.

[0048] Please continue reading. Figure 1 The metal sealing component 200 consists of two parts, including a metal ring 210 and a metal base 220. The metal ring 210 and the metal base 220 can be integrally formed or separate structures. In this application, in order to facilitate the manufacturing of the metal sealing component 200 and the connection between the metal sealing component 200 and the non-metallic body 100, the metal ring 210 and the metal base 220 adopt a separate structure.

[0049] The metal ring 210 is a sleeve that is open at both ends and closed circumferentially, with the first end of the metal ring 210 forming an annular embedded end. A metal base 220 is disposed at the second end of the metal ring 210 to seal the second end of the metal ring 210. A gas adsorbent is disposed on the surface of the metal base 220 facing the first end of the metal ring 210. The metal base 220 has one or more vacuum slits 221. The vacuum slits 221 can be customized in different shapes and patterns according to user needs to meet customized requirements. When multiple vacuum slits 221 are provided, the shape and size of each vacuum slit 221 can be the same or different.

[0050] Please see Figure 5 In one embodiment of this application, the vacuum seam 221 on the metal base 220 is a plurality of parallel straight seams.

[0051] The weld surface area formed by welding vacuum seam 221 must be greater than 2.0 square millimeters. If the weld surface area is too small, it will not be conducive to vacuuming, and the heat preservation effect of the product will be unstable.

[0052] In this application, the gas adsorbent is a zirconium block. After vacuum welding, the gas adsorbent is activated at high temperature. The activation of the gas adsorbent requires a temperature of over 500°C. After vacuum welding, a single-point laser is applied to the area where the gas adsorbent is located to release high temperature. The metal base 220 can quickly transfer the temperature to the gas adsorbent, activate the gas adsorbent, and cause it to react and adsorb the inert gas and stains that have not been extracted from the insulation layer.

[0053] Please see Figure 2 In one embodiment of this application, the metal ring 210 includes a planar annular base 211, a first sleeve 212, and a second sleeve 213. The first sleeve 212 stands upright from the inner edge of the planar annular base 211 toward the first end of the metal ring 210, and the end of the first sleeve 212 away from the planar annular base 211 forms an annular embedded end. The second sleeve 213 stands upright from the outer edge of the planar annular base 211 toward the second end of the metal ring 210, and the end of the second sleeve 213 away from the planar annular base 211 is engaged with the metal base 220. This structure helps to improve the overall structural strength of the metal sealing member 200 and makes it less prone to deformation.

[0054] To further ensure the connection strength between the non-metallic body 100 and the metal sealing member 200, please refer to... Figure 3In another embodiment of this application, at least one annular protrusion 216 is provided on the surface of the planar annular base 211 facing the bottom end of the outer shell 110. The annular protrusion 216 is used to contact and cooperate with the bottom end of the outer shell 110 when the annular insert end is inserted into the vacuum port. A second connecting solder layer is provided between the annular protrusion 216 closest to the first sleeve part 212 and the first sleeve part 212. The second connecting solder layer is connected to the first connecting solder layer. In this way, not only can the non-metallic body 100 and the metal sealing member 200 be connected in multiple directions, but also during the cooling process, since the metal sealing member 200 has a larger shrinkage rate, the above-mentioned annular protrusion 216 can squeeze the connecting solder of the second connecting solder layer between the annular insert end and the vacuum port, ensuring that the space between the annular insert end and the vacuum port can be fully filled by the connecting solder.

[0055] Meanwhile, the annular protrusion 216 can also serve as a support between the non-metallic body 100 and the metal sealing member 200, preventing cracks from appearing in the first connecting solder layer due to the force exerted on the metal sealing member 200 in the axial direction of the insulation container towards the non-metallic body 100 during production, manufacturing, and use, thereby further ensuring the sealing effectiveness between the non-metallic body 100 and the metal sealing member 200.

[0056] Preferably, a plurality of annular protrusions 216 are arranged radially at intervals on the surface of the planar annular base 211 facing the bottom end of the outer shell 110, and a third connecting solder layer is provided between two adjacent annular protrusions 216, thereby forming a wavy mating gap between the planar annular base 211 and the bottom end face of the outer shell 110, increasing the contact area between the metal sealing member 200 and the connecting solder, and thus improving the connection strength.

[0057] To further optimize the above technical solution, the axial dimension of the annular protrusion 216 furthest from the first sleeve 212 is larger than the axial dimension of the other annular protrusions 216. The annular protrusion 216 furthest from the first sleeve 212 is used to contact and cooperate with the bottom end of the housing 110 so that all the connecting solders are connected as one, that is, the first connecting solder layer, the second connecting solder layer and the third connecting solder layer are connected as one.

[0058] like Figure 4 As shown, an annular groove 217 is provided on the surface of the planar annular base 211 facing away from the bottom end of the outer shell 110, corresponding to the position of the annular protrusion 216. That is, the metal ring 210 of the metal sealing component 200 in this application is formed by stamping, which reduces the weight of the metal sealing component 200 while ensuring strength.

[0059] like Figures 1 to 4As shown, to facilitate the connection between the metal ring 210 and the metal base 220, a first extension 214 extending radially is provided at one end of the second sleeve 213 away from the planar annular base 211. A second extension 215 is provided on the outer edge of the first extension 214, which stands upright in the direction away from the first end of the metal ring 210. The first extension 214 and the second extension 215 form a groove 300 that accommodates the metal base 220 and limits the metal base 220. When welding the metal base 220 and the metal ring 210, a laser welding device can be used to weld around the circumference of the metal base 220.

[0060] To reduce external leakage of the metal sealing component 200, please refer to Figure 1 In one embodiment of this application, the bottom end of the outer shell 110 of the non-metallic body 100 is provided with a groove 300 that is recessed towards the top. The vacuum port is provided at the bottom of the groove 300. The metal sealing member 200 is at least partially provided in the groove 300. The metal sealing member 200 has a gap between it and the circumferential groove wall of the groove 300 in the radial direction. This allows the connecting solder to be completely hidden in the groove 300, preventing it from being exposed and damaged by bumps.

[0061] To facilitate the flow of the connecting solder between the vacuum port and the annular insert end, the bottom of the groove 300 is a conical surface with the axis of the vacuum port as the axis, so that the molten connecting solder can flow between the vacuum port and the annular insert end.

[0062] To further optimize the above technical solution, the insulated container also includes a non-metallic base, which is connected to the bottom of the non-metallic body 100 to cover the metal sealing component 200. The non-metallic base and the non-metallic body 100 are made of the same material and are connected by threaded connection and / or adhesive.

[0063] Depending on the relative position of the metal sealing member 200 and the groove 300, the non-metallic base can be a shallow cup or a flat plate. When the metal sealing member 200 is fully embedded in the groove 300, the non-metallic base can be a flat plate. When the metal sealing member 200 is only partially embedded in the groove 300, the non-metallic base is a shallow cup to accommodate the part of the metal sealing member 200 that protrudes from the groove 300.

[0064] To further optimize the above technical solution and ensure the neat appearance of the insulated container, in one embodiment of this application, the bottom circumferential outer wall of the non-metallic body 100 is flush with the circumferential outer wall of the non-metallic base to avoid forming a stepped structure and simplify the lines of the circumferential outer wall of the insulated container.

[0065] It is foreseeable that the surface of the non-metallic body 100 made of non-metallic materials such as glass, ceramics, and plastic may have pores that are not visible to the naked eye due to problems such as process or raw materials. When high pressure is applied to vacuum, the pores will form convection, affecting the vacuum effect. Therefore, in one embodiment of this application, a glaze coating is provided on the inner and / or outer walls of the outer shell 110 and the inner and / or outer walls of the inner liner 120 of the non-metallic body 100. The glaze coating can effectively seal the above-mentioned pores, thereby ensuring the vacuum degree of the insulation layer and further ensuring the heat preservation and cold preservation performance of the insulation container. The glaze coating can also make the surface of the outer shell 110 or the inner liner 120 smoother and harder, and less prone to scratches.

[0066] This application also provides a method for manufacturing the above-mentioned heat-insulating container, including the following steps:

[0067] Manufacture a non-metallic body 100, and open a vacuum port on the bottom end face of the non-metallic body 100.

[0068] Manufacture a metal sealing component 200, and manufacture a metal ring 210 and a metal base 220 for the metal sealing component 200.

[0069] Connect the non-metallic body 100 and the metal ring 210 by inverting the non-metallic body 100, inserting the annular embedded end of the metal ring 210 into the vacuum port, filling the space between the annular embedded end and the vacuum port with connecting solder, and heating and melting the connecting solder to form a first connecting solder layer between the annular embedded end and the vacuum port, thereby connecting the metal ring 210 and the non-metallic body 100.

[0070] The connecting solder can be brazing / glass sealing material. The high temperature of the laser welding equipment outside the vacuum equipment makes the brazing / glass sealing material reach a molten state. After melting, the brazing / glass sealing material can easily flow between the annular embedded end and the vacuum port. After cooling and returning to a solid state, it can connect the non-metallic body 100 and the metal ring 210.

[0071] Connect the metal ring 210 and the metal base 220 by welding the metal ring 210 and the metal base 220 together. Vacuum is drawn through the vacuum seam 221 of the metal base 220 and then sealed and closed in a vacuum environment.

[0072] The non-metallic body 100 is inverted (mouth facing down, metal base 220 facing up) and placed in a vacuum device. A product fixture is placed over the bottom of the non-metallic body 100, sealing the bottom of the non-metallic body 100 and the metal sealing component 200 inside. A vacuum is achieved by evacuating the insulation interlayer through the vacuum seam 221. The laser welding equipment scans the position and shape of the vacuum seam 221 on the metal base 220 through the product fixture supported by transparent glass. The laser welding equipment system automatically generates a graphic and captures it in real time. The laser welds the vacuum seam 221 through the transparent glass.

[0073] After vacuum welding is completed, a single-point laser is applied to the area where the gas adsorbent is located to release high temperature, activate the gas adsorbent, and cause it to react and adsorb the inert gas and stains that were not removed from the insulation layer.

[0074] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0075] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A heat-insulating container, characterized in that, include: The non-metallic body includes an outer shell and an inner liner that are sealed and fixed at the top, and a vacuum port is provided on the bottom end face of the outer shell; The metal sealing component is a structure that is open at one end, closed at the other end and circumferentially, and hollow inside. The open end of the metal sealing component is adapted to the shape of the vacuum port and can be inserted into the annular embedded end of the vacuum port with a gap fit. A first connecting solder layer is disposed between the outer wall of the annular embedded end and the inner wall of the vacuum port, connecting the non-metallic body to the metal sealing component.

2. The heat-insulating container according to claim 1, characterized in that, The metal sealing component includes: The metal ring sleeve is a sleeve that is open at both ends and closed in the circumference, with the first end of the metal ring sleeve forming the annular embedded end; A metal base is disposed at the second end of the metal ring to seal the second end of the metal ring. A gas adsorbent is disposed on the surface of the metal base facing the first end of the metal ring, and a vacuum slit is provided on the metal base.

3. The heat-insulating container according to claim 2, characterized in that, The metal ring includes a planar annular base, a first sleeve, and a second sleeve. The first sleeve stands upright from the inner edge of the planar annular base toward the first end of the metal ring. The end of the first sleeve away from the planar annular base forms the annular embedded end. The second sleeve stands upright from the outer edge of the planar annular base toward the second end of the metal ring. The end of the second sleeve away from the planar annular base is connected to the metal base.

4. The heat-insulating container according to claim 3, characterized in that, At least one annular protrusion is provided on the surface of the planar annular base facing the bottom end of the housing. The annular protrusion is used to contact and cooperate with the bottom end of the housing when the annular embedded end is inserted into the vacuum port. A second connecting solder layer is provided between the annular protrusion closest to the first sleeve and the first sleeve. The second connecting solder layer is connected to the first connecting solder layer.

5. The heat-insulating container according to claim 4, characterized in that, The planar annular base has a plurality of annular protrusions arranged radially at intervals on the surface facing the bottom end of the housing, and a third connecting solder layer is provided between two adjacent annular protrusions.

6. The heat-insulating container according to claim 5, characterized in that, The axial dimension of the annular protrusion furthest from the first sleeve is greater than the axial dimension of the other annular protrusions, and the annular protrusion furthest from the first sleeve is used to contact and engage with the bottom end of the housing.

7. The heat-insulating container according to any one of claims 4-6, characterized in that, An annular groove is provided on the surface of the planar annular base facing away from the bottom end of the outer shell, corresponding to the position of the annular protrusion.

8. The heat-insulating container according to any one of claims 3-6, characterized in that, The second sleeve has a first extension extending radially at one end away from the planar annular base. The outer edge of the first extension has a second extension that stands upright in the direction away from the first end of the metal ring. The first extension and the second extension form a groove that accommodates the metal bottom and limits the position of the metal bottom.

9. The heat-insulating container according to any one of claims 1-6, characterized in that, The bottom end of the outer casing is provided with a recessed groove extending towards the top. The vacuum port is located at the bottom of the groove. The metal sealing member is at least partially disposed within the groove. The metal sealing member has a gap in the radial direction between itself and the circumferential wall of the groove.

10. The heat-insulating container according to any one of claims 1-6, characterized in that, The insulated container also includes a non-metallic base, which is connected to the bottom of the non-metallic body to cover the metal sealing component inside.

11. The heat-insulating container according to claim 10, characterized in that, The bottom circumferential outer wall of the non-metallic body is flush with the circumferential outer wall of the non-metallic base.

12. The heat-insulating container according to any one of claims 1-6, characterized in that, An enamel coating is applied to the inner and / or outer walls of the non-metallic outer shell and the inner and / or outer walls of the inner liner.

13. A method for manufacturing a thermal insulation container according to any one of claims 2-6, characterized in that, Including the following steps: Manufacture a non-metallic body and open a vacuum port at the bottom end face of the non-metallic body; Manufacture metal sealing components, including the metal ring and metal base of the metal sealing components; Connect the non-metallic body to the metal ring. Invert the non-metallic body and insert the annular embedded end of the metal ring into the vacuum port. Fill the space between the annular embedded end and the vacuum port with connecting solder and heat and melt the solder to form a first connecting solder layer between the annular embedded end and the vacuum port, thus connecting the metal ring to the non-metallic body. Connect the metal ring to the metal base, weld the metal ring to the metal base, evacuate through the vacuum seam of the metal base, and seal the vacuum seam in a vacuum environment.

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