Heat preservation container

Abstract

The utility model relates to a heat preservation container which comprises a container body, the container body comprises a non-metal container body and a metal bottom, the non-metal container body comprises a shell and an inner container, the top end of the shell and the top end of the inner container are fixedly connected in a sealed mode, the inner container defines a containing cavity in the circumferential direction, the bottom end of the containing cavity is closed, and the top end of the containing cavity is open. A heat preservation interlayer is defined by the shell, the inner container and the metal bottom, the heat preservation interlayer is a vacuum interlayer, a gas adsorbent is fixedly arranged on the surface, facing the vacuum interlayer, of the metal bottom, or the heat preservation interlayer is filled with a heat preservation layer. The container main body adopts a structure of combining a non-metal material and a metal material, so that the container main body can store acidic substances while reducing heat exchange inside and outside the container and improving heat preservation and cold insulation effects.

Description

[0001] This application claims priority to Chinese Patent Application No. 202411869652.9, filed on December 18, 2024, entitled "A Thermal Insulation Container and a Method for Manufacturing the Same", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This utility model relates to the field of thermal insulation container technology, and in particular to a thermal insulation container. Background Technology

[0003] 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. Utility Model Content

[0004] The purpose of this invention is to provide an insulated container that can have a long-lasting heat preservation and cold preservation effect, while also being able to store acidic substances and not easily scratched or rusted.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An insulated container, comprising:

[0007] The container body includes a non-metallic body and a metal bottom. The non-metallic body includes an outer shell and an inner liner that are sealed and fixedly connected at the top. The inner liner forms a cavity that is closed circumferentially and at the bottom, and open at the top. The outer shell is open at the bottom and surrounds the inner liner. The metal bottom is open at the bottom of the outer shell and is sealed and bonded to the outer shell. The outer shell, the inner liner, and the metal bottom form a heat-insulating interlayer. The heat-insulating interlayer is a vacuum interlayer. A gas adsorbent is fixedly disposed on the surface of the metal bottom facing the vacuum interlayer, or the heat-insulating interlayer is filled with a heat-insulating layer.

[0008] In one embodiment of this application, the inner wall and / or outer wall of the outer shell are provided with an enamel coating, and the inner wall and / or outer wall of the inner liner are provided with an enamel coating.

[0009] In one embodiment of this application, a cover body is also included. The cover body includes a cover body and an upper cover. The cover body is detachably and sealingly connected to the top end of the non-metallic body. The upper cover is fixedly and sealingly connected to the top end of the cover body. A cavity is formed between the upper cover and the cover body. A heat-insulating filling material is provided in the cavity.

[0010] In one embodiment of this application, the bottom end of the cover body is provided with a groove that can accommodate the top end of the non-metallic body. One of the inner and outer peripheral groove walls of the groove is provided with a first thread structure, and one of the outer and inner peripheral surfaces of the top end of the non-metallic body is provided with a second thread structure. The first thread structure and the second thread structure are threadedly engaged to detachably and sealingly connect the cover body and the non-metallic body.

[0011] In one embodiment of this application, an annular limiting boss is provided at the position of the inner circumferential groove wall and the outer circumferential groove wall opposite to the top end of the first threaded structure. The annular limiting boss and the top end of the first threaded structure cooperate in the groove to form a first closing limiting groove. A sealing ring is provided in the first closing limiting groove for contacting and cooperating with the top end face of the non-metallic body.

[0012] In one embodiment of this application, an annular welding rib is provided on one of the mating connection surfaces of the cover body and the upper cover, and an annular welding groove is provided on the other of the mating connection surfaces of the cover body and the upper cover. An annular overflow groove is provided on the inner and / or outer side of the annular welding groove. The top end face of the annular partition boss between the annular welding groove and the annular overflow groove is lower than the mating connection surface of the cover body and the upper cover. The cover body and the upper cover are fused and welded together by the annular welding rib embedded in the annular welding groove. The annular overflow groove is used to accommodate excess fused welding rib.

[0013] In one embodiment of this application, a filter screen component is further included, the filter screen component including an upper filter screen and a lower filter screen that are detachably connected, a filtration space is formed between the upper filter screen and the lower filter screen, and the upper filter screen is detachably disposed on the container body or the cover.

[0014] In one embodiment of this application, one of the two locations—the bottom outer circumferential surface of the upper filter and the top inner circumferential surface of the lower filter—is circumferentially spaced with evenly spaced oblique snap-fit ​​protrusions. The other of the two locations is circumferentially spaced with evenly spaced first snap-fit ​​protrusions. The bottom of the upper filter and the top of the lower filter are axially nested and rotated relative to each other by a preset angle until the first snap-fit ​​protrusion contacts and engages with the lower side of the oblique snap-fit ​​protrusion. At this point, the upper filter and the lower filter are detachably connected.

[0015] In one embodiment of this application, one of the upper filter and the inner liner is provided with a second snap-fit ​​protrusion, and the other of the upper filter and the inner liner is provided with an L-shaped snap-fit ​​groove. The inlet section of the L-shaped snap-fit ​​groove is provided along the axial direction of the upper filter or the inner liner. The first end of the inlet section is an opening for the second snap-fit ​​protrusion to enter. The second end of the inlet section is connected to the snap-fit ​​section of the L-shaped snap-fit ​​groove. The snap-fit ​​section extends circumferentially along the upper filter or the inner liner. The end of the snap-fit ​​section away from the inlet section is provided with a second closing limiting groove. The second closing limiting groove engages with the second snap-fit ​​protrusion to make the upper filter and the inner liner detachably connected.

[0016] Alternatively, one of the upper filter and the cover body may be provided with a second snap-fit ​​protrusion, and the other of the upper filter and the cover body may be provided with an L-shaped snap-fit ​​groove. The entrance section of the L-shaped snap-fit ​​groove is provided along the axial direction of the upper filter or the cover body. The first end of the entrance section is an opening for the second snap-fit ​​protrusion to enter. The second end of the entrance section is connected to the snap-fit ​​section of the L-shaped snap-fit ​​groove. The snap-fit ​​section extends circumferentially along the upper filter or the cover body. The end of the snap-fit ​​section away from the entrance section is provided with a second closing limiting groove. The second closing limiting groove engages with the second snap-fit ​​protrusion to allow the upper filter and the cover body to be detachably connected.

[0017] In one embodiment of this application, a filter handle is provided at the bottom center of the upper filter screen.

[0018] In one embodiment of this application, an annular snap-fit ​​boss is provided on the upper surface of the metal base, and an annular stepped surface is formed on the outer periphery of the annular snap-fit ​​boss on the metal base. The annular snap-fit ​​boss is embedded in the bottom opening of the housing, and the annular stepped surface is in contact with the bottom opening end face of the housing.

[0019] In one embodiment of this application, the insulation layer is an aerogel layer or a foaming agent layer.

[0020] In one embodiment of this application, the thermal insulation interlayer is a vacuum interlayer, and the metal bottom is provided with a vacuum port, which is sealed and closed by laser welding, brazing, or sealing material welding.

[0021] In one embodiment of this application, the vacuum port is a vacuum slit that penetrates the metal bottom, and the vacuum slit is sealed and closed by laser welding.

[0022] In one embodiment of this application, the vacuum port is a conical hole penetrating the metal bottom. The diameter of the conical hole gradually decreases from the surface of the metal bottom away from the surface of the insulation layer to the surface of the metal bottom towards the surface of the insulation layer. The conical hole is sealed and closed by brazing or sealing material welding.

[0023] In one embodiment of this application, the vacuum port includes a groove disposed on the surface of the metal bottom facing away from the thermal insulation layer and a through hole penetrating the metal bottom at the lowest point of the groove, the through hole being sealed and closed by brazing or sealing material welding.

[0024] In one embodiment of this application, the gas adsorbent is a zirconium block.

[0025] As can be seen from the above technical solutions, this utility model discloses a heat-insulating container, which includes a container body, a non-metallic body and a metal bottom. The non-metallic body includes an outer shell and an inner liner that are sealed and fixedly connected at the top. The inner liner forms a cavity that is circumferentially closed at the bottom and open at the top. The bottom of the outer shell is open and surrounds the inner liner. The metal bottom is sealed and bonded to the outer shell at the bottom opening. The outer shell, the inner liner and the metal bottom form a heat-insulating interlayer. The heat-insulating interlayer is a vacuum interlayer. A gas adsorbent is fixedly disposed on the surface of the metal bottom facing the vacuum interlayer, or the heat-insulating interlayer is filled with a heat-insulating layer.

[0026] As can be seen, the main body of the aforementioned insulated container adopts a structure combining non-metallic and metallic materials. The outer shell and inner liner are integrally molded using non-metallic materials that are not easily corroded by acidic substances. When a vacuum is required, the bottom of the non-metallic body is sealed using an easily weldable metal bottom. By pre-reserving a vacuum port on the metal bottom and welding the vacuum port after vacuuming, a vacuum treatment can be achieved for the interlayer formed by the outer shell, inner liner, and metal bottom. This vacuum interlayer reduces heat exchange between the inside and outside of the container. The gas adsorbent in the vacuum interlayer can continuously adsorb inert gases and stains remaining in the vacuum interlayer during the welding process, ensuring the vacuuming effect. In addition to vacuuming, an insulation layer can be filled into the insulation interlayer to reduce heat exchange between the inside and outside of the container. This allows the aforementioned insulated container to improve its heat preservation and cold preservation effects while enabling it to store acidic substances. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the main body of the insulated container provided in this embodiment of the utility model;

[0029] Figure 2A front view of the container body of the insulated container provided in an embodiment of this utility model;

[0030] Figure 3 for Figure 2 Sectional view along direction A in the middle;

[0031] Figure 4 A bottom view of the container body of an insulated container provided in one embodiment of the present utility model;

[0032] Figure 5 A schematic diagram of the structure of the lid of the insulated container provided in an embodiment of this utility model;

[0033] Figure 6 A front view of the lid of the insulated container provided in an embodiment of this utility model;

[0034] Figure 7 for Figure 6 Sectional view along direction B in the middle;

[0035] Figure 8 for Figure 7 A magnified view of a portion of point C in the middle;

[0036] Figure 9 A schematic diagram of the combined structure of the container body and the lid of the insulated container provided in this embodiment of the utility model;

[0037] Figure 10 A schematic diagram of the container body and lid assembly of the insulated container provided in this embodiment of the utility model;

[0038] Figure 11 for Figure 10 Sectional view along direction D in the middle;

[0039] Figure 12 A bottom view of the container body of an insulated container provided in another embodiment of the present utility model;

[0040] Figure 13 for Figure 12 Sectional view along direction E in the middle;

[0041] Figure 14 A bottom view of the container body of an insulated container provided in another embodiment of the present utility model;

[0042] Figure 15 for Figure 14 Sectional view along direction F in the middle;

[0043] Figure 16 A schematic diagram of the structure of the filter screen component of the heat-insulating container provided in this embodiment of the utility model;

[0044] Figure 17A cross-sectional view of the container body, lid, and filter screen of the insulated container provided in this embodiment of the utility model.

[0045] In the picture:

[0046] 1 is the main body of the container; 110 is the non-metallic body; 111 is the outer shell; 112 is the inner liner; 113 is the insulation layer; 120 is the metal bottom; 121 is the vacuum slit; 122 is the conical hole; 123 is the container groove; 124 is the through hole; 130 is the gas adsorbent; 2 is the cover; 210 is the cover body; 211 is the groove; 212 is the annular limiting boss; 213 is the annular welding groove; 214 is the annular overflow groove; 220 is the top cover; 221 is the annular welding rib; 230 is the thermal insulation filler; 240 is the sealing ring; 3 is the filter screen component; 310 is the upper filter screen; 311 is the oblique snap-fit ​​boss; 312 is the second snap-fit ​​protrusion; 313 is the filter screen handle; 320 is the lower filter screen; 321 is the first snap-fit ​​protrusion. Detailed Implementation

[0047] The core of this utility model is to provide an insulated container. The structural design of this insulated container enables it to have a long-lasting heat preservation and cold preservation effect, while also enabling it to store acidic substances and making it less susceptible to scratches and rust.

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0049] Please see Figures 1 to 4 , Figure 1 This is a schematic diagram of the main body of the insulated container provided in an embodiment of the present utility model. Figure 2 This is a front view of the container body of the insulated container provided in an embodiment of the present utility model. Figure 3 for Figure 2 Sectional view along direction A in the middle, Figure 4 This is a bottom view of the container body of the insulated container provided in an embodiment of the present utility model.

[0050] This utility model discloses a heat-insulating container, which includes a container body 1. The container body 1 includes a non-metallic body 110 and a metal bottom 120. The non-metallic body 110 includes an outer shell 111 and an inner liner 112, which are sealed and fixed at the top. The non-metallic body 110 can be made of glass, ceramic, or a high-temperature resistant, corrosion-resistant, and chemically stable polymer material, such as plastic. Compared with metal materials, these non-metallic materials are not prone to rust and are not easily corroded by acidic substances. Therefore, it is not necessary to use an electrolytic process on the inner surface of the inner liner 112 to add its own rust-proof function. The metal bottom 120 is only provided with At the bottom of the container body 1, the metal bottom 120 is preferably made of stainless steel, aluminum alloy or other metal materials that are not easy to rust. The metal bottom 120 does not come into contact with the contents stored in the inner liner 112 and will not be corroded by acidic substances. In addition, metal materials are easier to weld than non-metal materials. Taking advantage of this feature, a vacuum port that is easy to weld and seal can be reserved on the metal bottom 120 during the manufacturing process, so as to achieve vacuum treatment of the insulation layer 113 formed by the outer shell 111, the inner liner 112 and the metal bottom 120. The vacuum port can be set into different shapes as needed, such as a pattern customized according to customer needs.

[0051] The inner liner 112 of the container body 1 forms a cavity that is closed at the bottom and open at the top. The outer shell 111 is open at the bottom and surrounds the inner liner 112. The metal bottom 120 is sealed and bonded to the outer shell 111 at the bottom opening. The outer shell 111, the inner liner 112, and the metal bottom 120 form a heat-insulating interlayer 113. The metal bottom 120 and the outer shell 111 are bonded together with a high-temperature resistant adhesive. The high-temperature resistant adhesive must be able to withstand temperatures above 550°C and ensure strong sealing after bonding. There should be no air holes to ensure complete sealing and completely isolate the heat-insulating interlayer 113 from the outside. The heat-insulating interlayer 113 can be a vacuum interlayer. A gas adsorbent 130 is fixedly disposed on the surface of the metal bottom 120 facing the vacuum interlayer. Alternatively, in addition to vacuuming, a heat-insulating layer can be filled in the heat-insulating interlayer 113 to reduce heat exchange between the inside and outside of the container.

[0052] Compared with the prior art, the insulated container body 1 provided in this embodiment adopts a structure combining non-metallic and metallic materials. The outer shell 111 and inner liner 112 are integrally molded using non-metallic materials that are not easily corroded by acidic substances. When a vacuum is required, the bottom of the non-metallic body 110 is sealed by a metal bottom 120 that is easy to weld. By leaving a vacuum port on the metal bottom 120 and welding the vacuum port after vacuuming, a vacuum treatment can be achieved for the interlayer formed by the outer shell 111, inner liner 112 and metal bottom 120. This reduces the heat exchange between the inside and outside of the container by using the insulation interlayer 113. The gas adsorbent 130 in the vacuum interlayer can continuously adsorb the inert gas and stains left in the vacuum interlayer during the welding process, ensuring the vacuuming effect. In addition to vacuuming, an insulation layer can also be filled in the insulation interlayer 113 to reduce the heat exchange between the inside and outside of the container. This allows the insulated container to improve the heat preservation and cold preservation effect while enabling it to store acidic substances.

[0053] It is foreseeable that the surface of the non-metallic body 110 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 with the 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 utility model, the inner wall and / or outer wall of the outer shell 111 are provided with a glaze coating, and the inner wall and / or outer wall of the inner liner 112 are provided with a glaze coating. The glaze coating can effectively seal the above-mentioned pores, thereby ensuring the vacuum degree of the insulation layer 113, 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 111 or the inner liner 112 smoother and harder, and less prone to scratches.

[0054] In addition to the container body 1 described above, the insulated container provided in this embodiment of the present invention also includes a lid 2, such as... Figures 5 to 7 As shown, the cover 2 includes a cover body 210 and an upper cover 220. The cover body 210 and the upper cover 220 can be made of metal or non-metal materials, which is not limited here. The top of the cover body 210 is detachably and sealed to the top of the non-metallic body 110. The connection between the cover body 210 and the top of the non-metallic body 110 includes, but is not limited to, a threaded connection. The top of the upper cover 220 is fixedly and sealed to the top of the cover body 210, that is, the upper cover 220 is fixedly and sealed to the end of the cover body 210 away from the non-metallic body 110. The upper cover 220 and the cover body 210 form a cavity. The cavity is provided with a heat-insulating filler 230. The heat-insulating filler 230 includes, but is not limited to, polystyrene material. The heat-insulating filler 230 is located just above the top opening of the inner liner 112.

[0055] Specifically, such as Figure 7As shown, in one embodiment of this application, in order to improve the heat preservation effect, a groove 211 is provided at the bottom end of the cover body 210 to accommodate the top end of the non-metallic body 110. Alternatively, the bottom center of the cover body 210 can be considered as having a protrusion extending away from the upper cover 220, with the cavity extending into the protrusion. A portion of the heat-insulating filler 230 is disposed within the protrusion. A first thread structure is provided on one of the inner and outer peripheral groove walls of the groove 211, and a second thread structure is provided on one of the outer and inner peripheral surfaces of the top end of the non-metallic body 110. The first and second thread structures are threaded together to detachably and sealably connect the cover body 210 and the non-metallic body 110. Thus, when the cover body 2 is assembled with the container body 1, part of the heat-insulating filler 230 can be embedded into the top opening of the inner liner 112 along with the protrusion, thereby further improving the heat preservation effect. Figures 9 to 11 As shown.

[0056] To further optimize the above technical solution and improve the sealing effect between the cover 2 and the container body 1, thus preventing leakage, in one embodiment of this application, such as... Figure 7 As shown, an annular limiting boss 212 is provided at another position on the inner and outer peripheral groove walls of the groove 211 opposite to the top of the first threaded structure. The annular limiting boss 212 and the top of the first threaded structure cooperate in the groove 211 to form a first closing limiting groove. A sealing ring 240 is provided in the first closing limiting groove for contacting and cooperating with the top end face of the non-metallic body 110. When the cover 2 is threadedly connected to the container body 1, the top end face of the container body 1 is spirally fed relative to the cover 2 and presses the sealing ring 240, thereby achieving a seal. Due to the limiting of the first closing limiting groove, the sealing ring 240 can be firmly fixed on the cover 2 and prevent it from falling off.

[0057] In one embodiment of this application, an annular welding rib 221 is provided on one of the mating connection surfaces of the cover body 210 and the upper cover 220, and an annular welding groove 213 is provided on the other mating connection surface of the cover body 210 and the upper cover 220. An annular overflow groove 214 is provided on the inner and / or outer sides of the annular welding groove 213. The top end face of the annular partition boss between the annular welding groove 213 and the annular overflow groove 214 is lower than the mating connection surface of the cover body 210 and the upper cover 220. The cover body 210 and the upper cover 220 are fused together by the annular welding rib 221 embedded in the annular welding groove 213. The annular overflow groove 214 is used to accommodate excess fused welding ribs, such as... Figure 7 and Figure 8As shown, the top surface of the cover body 210 is provided with an annular welding groove 213, and annular overflow grooves 214 are respectively provided on the inner and outer sides of the annular welding groove 213. The cross-sectional area of ​​the annular overflow groove 214 is smaller than that of the annular welding groove 213. The bottom surface of the upper cover 220 is provided with annular welding ribs 221, and the cross-sectional area of ​​the annular welding ribs 221 is smaller than that of the welding area of ​​the annular welding groove 213. As a preferred embodiment, in one specific embodiment of this application, the cross-sectional shapes of the annular welding ribs 221, the annular welding groove 213, and the annular overflow grooves 214 are all trapezoidal. Of course, in other embodiments, they can also be... Other shapes are not limited here. When the cover body 210 and the upper cover 220 are ultrasonically heat-fused, the annular welding rib 221 is molten under ultrasonic vibration, applying axial pressure to the cover body 210 and the upper cover 220. The annular welding rib 221 and the annular welding groove 213 are in full contact and the welding between them is achieved. Under pressure, the excess welding material formed by the melting of the annular welding rib 221 overflows into the annular overflow groove 214 through the annular partition boss. This not only ensures the flatness of the mating connection surface between the cover body 210 and the upper cover 220, but also increases the molten welding surface and improves the welding strength and firmness.

[0058] To facilitate user operation, in one embodiment of this application, the insulated container further includes a filter component 3. The filter component 3 can be an integral structure or a separate structure, thereby serving to filter tea leaves. Figure 16 As shown, in Figure 16 In the illustrated embodiment, the filter component 3 includes a detachably connected upper filter 310 and a lower filter 320, forming a filtration space between the upper filter 310 and the lower filter 320. The upper filter 310 is detachably mounted on the container body 1 or the lid 2, allowing tea and other beverages to be placed in the filtration space between the upper filter 310 and the lower filter 320, preventing the beverages from scattering into the cavity of the inner liner 112 and facilitating the cleaning of beverage residue. The upper filter 310 can also be used independently.

[0059] The upper filter screen 310 and the lower filter screen 320 can be detachably connected in various ways. In one specific embodiment of this application, such as... Figure 16 and Figure 17As shown, one of the two locations, the bottom outer circumferential surface of the upper filter screen 310 and the top inner circumferential surface of the lower filter screen 320, is circumferentially spaced with evenly spaced oblique locking protrusions 311. The other of the two locations, the bottom outer circumferential surface of the upper filter screen 310 and the top inner circumferential surface of the lower filter screen 320, is circumferentially spaced with evenly spaced first locking protrusions 321. The bottom of the upper filter screen 310 and the top of the lower filter screen 320 are nested axially and rotated relative to each other by a preset angle until the first locking protrusions 321 and the lower side of the oblique locking protrusions 311 are in contact and engaged. The upper filter screen 310 and the lower filter screen 320 are detachably connected. When it is necessary to separate the upper filter screen 310 and the lower filter screen 320, the upper filter screen 310 and the lower filter screen 320 can be rotated in opposite directions along the assembly direction.

[0060] Specifically, the upper filter screen 310 adopts a variable diameter structure. The upper filter screen 310 includes a large diameter section and a small diameter section along the axial direction from top to bottom. The circumferential wall surface of the large diameter section and / or the small diameter section is provided with filter holes, and the bottom surface of the small diameter section is provided with filter holes. The small diameter section can be nested into the top opening of the lower filter screen 320. The stepped surface between the small diameter section and the large diameter section can contact and cooperate with the top of the lower filter screen 320 to limit the position of both.

[0061] The upper filter screen 310 can be fixed inside the container body 1 or fixed to the bottom of the lid body 210. Specifically, in one embodiment of this application, one of the upper filter screen 310 and the inner liner 112 is provided with a second snap-fit ​​protrusion 312, and the other of the upper filter screen 310 and the inner liner 112 is provided with an L-shaped snap-fit ​​groove. The entrance section of the L-shaped snap-fit ​​groove is provided along the axial direction of the upper filter screen 310 or the inner liner 112. The first end of the entrance section is an opening for the second snap-fit ​​protrusion 312 to enter. The second end of the entrance section is connected to the snap-fit ​​section of the L-shaped snap-fit ​​groove. The snap-fit ​​section extends circumferentially along the upper filter screen 310 or the inner liner 112. A second closing limiting groove is provided at the end of the snap-fit ​​section away from the entrance section. The second closing limiting groove engages with the second snap-fit ​​protrusion 312 to make the upper filter screen 310 and the inner liner 112 detachably connected.

[0062] In another embodiment, one of the upper filter screen 310 and the cover body 210 is provided with a second snap-fit ​​protrusion 312, and the other of the upper filter screen 310 and the cover body 210 is provided with an L-shaped snap-fit ​​groove. The entrance section of the L-shaped snap-fit ​​groove is provided along the axial direction of the upper filter screen 310 or the cover body 210. The first end of the entrance section is an opening for the second snap-fit ​​protrusion 312 to enter. The second end of the entrance section is connected to the snap-fit ​​section of the L-shaped snap-fit ​​groove. The snap-fit ​​section extends circumferentially along the upper filter screen 310 or the cover body 210. A second closing limiting groove is provided at the end of the snap-fit ​​section away from the entrance section. The second closing limiting groove engages with the second snap-fit ​​protrusion 312 to make the upper filter screen 310 and the cover body 210 detachably connected.

[0063] like Figure 16 and Figure 17As shown, in one embodiment of this application, a filter handle 313 is provided at the bottom center of the upper filter screen 310. The filter handle 313 includes a rod and an arc-shaped cone at the top of the rod, which is suitable for picking up and installing with fingers. The bottom end of the rod is fixed to the bottom center of the upper filter screen 310 by a rivet.

[0064] To facilitate the assembly between the metal base 120 and the container body 1, such as Figure 3 As shown, in one embodiment of this application, an annular snap-fit ​​boss is provided on the upper surface of the metal base 120. An annular stepped surface is formed on the outer periphery of the annular snap-fit ​​boss. The annular snap-fit ​​boss is embedded in the bottom opening of the outer shell 111 and is press-fitted with the bottom opening of the outer shell 111. The annular stepped surface is in contact with the end face of the bottom opening of the outer shell 111. This increases the contact area between the metal base 120 and the container body 1, improving the sealing connection effect between the two.

[0065] In this case, the metal base 120 can be cast or formed by stamping and bending of metal sheets.

[0066] The insulation layer can be made of a material with insulation effect. In one embodiment of this application, the insulation layer is an aerogel layer or a foaming agent layer that is easy to fill the insulation interlayer. When the aerogel or foaming agent is filled into the insulation interlayer 113, the aerogel or foaming agent can expel the gas remaining in the insulation interlayer 113, thereby ensuring that the insulation interlayer 113 is completely filled with aerogel or foaming agent, and thus ensuring the insulation effect.

[0067] As described above, if the insulation interlayer 113 is a vacuum interlayer, the metal base 120 is provided with a vacuum port, which is sealed and closed by laser welding, brazing, or sealing material welding. The vacuum port can be slit-shaped, such as... Figure 4 As shown, in one specific embodiment, the vacuum port is a vacuum slit 121 penetrating the metal bottom 120. In this case, the vacuum slit 121 can be sealed closed by laser welding. The welded and cured container body is inverted (mouth down, metal bottom up) and placed in the laser vacuum equipment. Vacuuming is performed on the insulation layer 113 through the vacuum slit 121 to achieve a vacuum effect. The position and shape of the vacuum slit 121 on the metal bottom are scanned through the product fixture supported by transparent glass. The laser vacuum equipment system automatically generates a graphic and captures it in real time. The laser welds the vacuum slit 121 through the product fixture.

[0068] It should be noted that the aforementioned vacuum seam 121 can be one or more, and the vacuum seam 121 can be set into different shapes according to needs or customer requirements, such as... Figure 4In the illustrated embodiment, the vacuum slit 121 is straight. In other embodiments, the vacuum slit 121 may also be curved or a specific pattern shape required by the customer.

[0069] Of course, the vacuum port can also use other structures, such as Figure 12 and Figure 13 In the embodiment shown, the vacuum port is a conical hole 122 penetrating the metal base 120. The diameter of the conical hole 122 gradually decreases from the surface of the metal base 120 away from the surface of the insulation layer to the surface of the metal base 120 towards the surface of the insulation layer 113. The conical hole 122 is sealed by brazing or sealing material welding. The sealing material welding can use metal granules or glass sealing material. The metal granules or glass sealing material is melted by high temperature using laser. The molten metal or glass flows into the conical hole 122 and then cools, returning to a solid state, thereby sealing the conical hole 122.

[0070] like Figure 14 and Figure 15 As shown, in another embodiment, the vacuum port includes a groove 123 disposed on the surface of the metal base 120 facing away from the insulation interlayer 113 and a through hole 124 penetrating the metal base 120 at the lowest point of the groove 123. The through hole 124 is sealed and closed by brazing or sealing material welding.

[0071] Preferably, in one embodiment of this application, the gas adsorbent 130 is a zirconium block. After the metal base 120 is welded and the vacuum interlayer is formed, a single-point laser heating is performed on the area on the metal base 120 corresponding to the gas adsorbent to a temperature of over 500°C, so that the gas adsorbent is activated and reacts to adsorb the inert gas and stains that have not been extracted between the inner and outer wall layers of the cup body.

[0072] 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.

[0073] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An insulating container, characterized by The container body comprises a non-metal body and a metal bottom, the non-metal body comprises an outer shell and an inner container, the inner container surrounds a circumferential and bottom-closed and top-opened cavity, the bottom of the outer shell is open and surrounds the outer container, the metal bottom is sealed and bonded to the bottom of the outer shell, the outer shell, the inner container and the metal bottom form a vacuum sandwich, the surface of the metal bottom facing the vacuum sandwich is fixedly provided with a gas adsorbent, or the vacuum sandwich is filled with a thermal insulation layer. The inner wall and / or outer wall of the outer shell is provided with an enamel coating, and the inner wall and / or outer wall of the inner container is provided with an enamel coating.

2. The thermally insulated container according to claim 1, characterized in that The cover body comprises a cover body and an upper cover, the cover body is detachably and sealingly connected to the top end of the non-metal body, the upper cover is fixedly and sealingly connected to the top end of the cover body, and a cavity is formed between the cover body and the upper cover, and a thermal insulation filler is arranged in the cavity.

3. The thermally insulated container of claim 1, wherein, The bottom of the cover body is provided with a groove capable of accommodating the top end of the non-metal body, one of the inner and outer circumferential groove walls of the groove is provided with a first threaded structure, one of the outer and inner circumferential surfaces of the top end of the non-metal body is provided with a second threaded structure, and the first threaded structure and the second threaded structure are threadedly connected to detachably and sealingly connect the cover body and the non-metal body.

4. The thermally insulated container according to claim 3, characterized in that The other of the inner and outer circumferential groove walls of the groove is provided with an annular limiting boss opposite to the top end of the first threaded structure, the annular limiting boss and the top end of the first threaded structure are matched in the groove to form a first closed-limiting groove, and a sealing ring for contact matching with the end face of the top end of the non-metal body is arranged in the first closed-limiting groove.

5. The thermally insulated container according to claim 4, characterized in that One of the matching connection surfaces of the cover body and the upper cover is provided with an annular welding rib, the other of the matching connection surfaces of the cover body and the upper cover is provided with an annular welding groove, the inner and / or outer side of the annular welding groove is provided with an annular overflow groove, the top end face of the annular partition boss between the annular welding groove and the annular overflow groove is lower than the matching connection surfaces of the cover body and the upper cover, the cover body and the upper cover are connected by melt welding of the annular welding rib embedded in the annular welding groove, and the annular overflow groove is used to accommodate excess melt welding rib.

6. A thermally insulated container according to any one of claims 3-5, characterized in that The filter screen member comprises detachably connected upper and lower filter screens, the upper and lower filter screens form a filtering space, and the upper filter screen is detachably arranged in the container body or the cover body.

7. The thermally insulated container according to any one of claims 3-5, characterized in that ​ 8. The thermally insulated container according to claim 7, characterized in that One of the bottom end outer circumferential surface of the upper filter screen and the top end inner circumferential surface of the lower filter screen is circumferentially spaced and uniformly distributed with inclined clamping bosses, and the other of the bottom end outer circumferential surface of the upper filter screen and the top end inner circumferential surface of the lower filter screen is circumferentially spaced and uniformly distributed with first clamping protrusions. The bottom end of the upper filter screen is axially nested with the top end of the lower filter screen, and the upper filter screen and the lower filter screen are detachably connected when the upper filter screen and the lower filter screen are relatively rotated by a preset angle until the first clamping protrusions contact and fit with the lower side of the inclined clamping bosses.

9. The thermally insulated container of claim 7, wherein, One of the upper filter screen and the inner container is provided with second clamping protrusions, and the other of the upper filter screen and the inner container is provided with an L-shaped clamping groove. An entrance section of the L-shaped clamping groove is arranged along the axial direction of the upper filter screen or the inner container. A first end of the entrance section is an opening for the second clamping protrusions to enter. A second end of the entrance section is connected to a clamping section of the L-shaped clamping groove. The clamping section extends along the circumferential direction of the upper filter screen or the inner container. An end of the clamping section away from the entrance section is provided with a second closing limiting groove. The second closing limiting groove is clamped and fitted with the second clamping protrusions, so that the upper filter screen and the inner container are detachably connected. Alternatively, one of the upper filter screen and the cover body is provided with second clamping protrusions, and the other of the upper filter screen and the cover body is provided with an L-shaped clamping groove. An entrance section of the L-shaped clamping groove is arranged along the axial direction of the upper filter screen or the cover body. A first end of the entrance section is an opening for the second clamping protrusions to enter. A second end of the entrance section is connected to a clamping section of the L-shaped clamping groove. The clamping section extends along the circumferential direction of the upper filter screen or the cover body. An end of the clamping section away from the entrance section is provided with a second closing limiting groove. The second closing limiting groove is clamped and fitted with the second clamping protrusions, so that the upper filter screen and the cover body are detachably connected.

10. The thermally insulated container of claim 7, wherein, A filter screen handle is arranged at the center of the bottom of the upper filter screen.

11. The thermally insulated container according to any one of claims 1-5 and 8-10, characterized in that An annular clamping boss is arranged on the upper surface of the metal bottom. An annular stepped surface is formed on the outer periphery of the annular clamping boss. The annular clamping boss is embedded in the bottom end opening of the shell. The annular stepped surface is in contact and fit with the end surface of the bottom end opening of the shell.

12. The thermally insulated container according to any one of claims 1-5 and 8-10, characterized in that The thermal insulation layer is an aerogel layer or a foaming agent layer.

13. The thermally insulated container according to any one of claims 1-5 and 8-10, characterized in that The thermal insulation interlayer is a vacuum interlayer. The metal bottom is provided with a vacuum extraction port. The vacuum extraction port is sealed and closed by laser welding, brazing or sealing material welding.

14. The thermally insulated container according to claim 13, characterized in that The vacuum extraction port is a vacuum extraction slot penetrating through the metal bottom. The vacuum extraction slot is sealed and closed by laser welding.

15. The insulating container of claim 13, wherein, The vacuum extraction port is a tapered hole penetrating through the metal bottom. The hole diameter of the tapered hole gradually decreases from the surface of the metal bottom away from the thermal insulation interlayer to the surface of the metal bottom towards the thermal insulation interlayer. The tapered hole is sealed and closed by brazing or sealing material welding.

16. The insulating container of claim 13, wherein, The vacuum extraction port includes a container groove arranged on the surface of the metal bottom away from the thermal insulation interlayer and a through hole penetrating through the metal bottom at the lowest point of the container groove. The through hole is sealed and closed by brazing or sealing material welding.

17. The thermally insulated container according to any one of claims 1-5 and 8-10, characterized in that The gas adsorbent is a zirconium block.

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