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 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, a containing cavity is defined by the inner container 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

Technical Field

[0001] The present invention relates to the technical field of heat-insulating containers, and in particular to a heat-insulating container and a manufacturing method thereof. Background Art

[0002] At present, there are two main types of thermos cups: non-metallic cup bodies and metal cup bodies. Although traditional non-metallic cup body thermos cups, such as double-layer glass cups and double-layer ceramic cups, have inner and outer wall layers, it is difficult to evacuate the inner and outer wall layers due to material limitations. Therefore, there is still heat transfer, and it is impossible to keep warm or cold for a long time, and it is easy to get hot. Although traditional stainless steel vacuum flasks can keep warm or cold for a long time, the inner liner is made of stainless steel and is not easy to store acidic substances. The surface of the inner liner of the stainless steel vacuum flask uses an electrolytic process to increase its own anti-rust function. If it is cleaned with hard materials, it will cause scratches, causing the inner liner to rust easily. Deep stains such as tea stains are even more difficult to clean. Summary of the invention

[0003] The first object of the present invention is to provide a heat-insulating container so that it can have the effect of long-term heat preservation and cold preservation, and at the same time it can store acidic substances and is not easily scratched or rusted.

[0004] The second object of the present invention is to provide a method for manufacturing the above-mentioned thermal insulation container.

[0005] To achieve the above object, the present invention provides the following technical solutions: A heat-insulating container, comprising: A container body, the container body comprising a non-metallic body and a metal bottom, the non-metallic body comprising an outer shell and an inner liner which are sealed and fixedly connected at the top, the inner liner forming a cavity which is closed in the circumference and at the bottom and open at the top, the bottom of the outer shell is open and surrounds the outer liner, the metal bottom is sealed and bonded to the outer shell at the bottom opening of the outer shell, the outer shell, the inner liner and the metal bottom form a thermal insulation interlayer, the thermal insulation interlayer is a vacuum interlayer, a gas adsorbent is fixedly provided on the surface of the metal bottom facing the vacuum interlayer, or the thermal insulation interlayer is filled with a thermal insulation layer.

[0006] In one embodiment of the present application, an enamel coating is provided on the inner wall and / or outer wall of the outer shell, and an enamel coating is provided on the inner wall and / or outer wall of the inner container.

[0007] In one embodiment of the present application, it also includes a cover body, which includes a cover body and an upper cover. The cover body is detachably and hermetically connected to the top of the non-metallic body, and the upper cover is fixedly and hermetically connected to the top of the cover body. A cavity is enclosed between the upper cover and the cover body, and a thermal insulation filler is arranged in the cavity.

[0008] In one embodiment of the present application, a groove capable of accommodating the top of the non-metallic body is provided at the bottom end of the cover body, a first threaded structure is provided at one of the inner circumferential groove wall and the outer circumferential groove wall of the groove, a second threaded structure is provided at one of the outer circumferential surface and the inner circumferential surface of the top of the non-metallic body, and the first threaded structure and the second threaded structure are threadedly matched to detachably and hermetically connect the cover body and the non-metallic body.

[0009] In one embodiment of the present application, an annular limiting boss is provided at another position of the inner groove wall and the outer groove wall of the groove opposite to the top of the first threaded structure, and the annular limiting boss cooperates with the top of the first threaded structure to form a first closing limiting groove in the groove, and 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.

[0010] In one embodiment of the present application, an annular welding rib is provided on one of the mating connection surfaces of the cover body and the upper cover, 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 side and / or the outer side of the annular welding groove, the top end surface 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 embedded in the annular welding groove by the annular welding rib and are connected by molten welding, and the annular overflow groove is used to accommodate excess molten welding rib.

[0011] In one embodiment of the present application, a filter component is further included, wherein the filter component includes an upper filter and a lower filter that are detachably connected, a filter space is formed between the upper filter and the lower filter, and the upper filter is detachably arranged on the container body or the cover.

[0012] In one embodiment of the present application, one of the two places, the outer circumferential surface of the bottom end of the upper filter and the inner circumferential surface of the top end of the lower filter, is provided with oblique clamping bosses evenly spaced along the circumferential direction, and the other of the two places, the outer circumferential surface of the bottom end of the upper filter and the inner circumferential surface of the top end of the lower filter, is provided with first clamping protrusions evenly spaced along the circumferential direction. The bottom end of the upper filter and the top end of the lower filter are axially nested, and when they are rotated through a preset angle relative to each other until the first clamping protrusion contacts and cooperates with the lower side of the oblique clamping protrusion, the upper filter and the lower filter can be detachably connected.

[0013] In one embodiment of the present application, one of the upper filter screen and the inner pot is provided with a second clamping protrusion, and the other of the upper filter screen and the inner pot is provided with an L-shaped clamping groove, the entrance section of the L-shaped clamping groove is arranged along the axial direction of the upper filter screen or the inner pot, the first end of the entrance section is an opening for the second clamping protrusion to enter, the second end of the entrance section is connected to the clamping section of the L-shaped clamping groove, the clamping section extends along the circumferential direction of the upper filter screen or the inner pot, and the end of the clamping section away from the entrance section is provided with a second closing limit groove, and the second closing limit groove is clamped and matched with the second clamping protrusion, so that the upper filter screen and the inner pot are detachably connected; Alternatively, one of the upper filter screen and the cover body is provided with a second snap-fitting protrusion, and the other of the upper filter screen and the cover body is provided with an L-shaped snap-fitting groove, the entrance section of the L-shaped snap-fitting groove is arranged along the axial direction of the upper filter screen or the cover body, the first end of the entrance section is an opening for the second snap-fitting protrusion to enter, the second end of the entrance section is connected to the snap-fitting section of the L-shaped snap-fitting groove, the snap-fitting section extends along the circumferential direction of the upper filter screen or the cover body, and a second closing limit groove is provided at one end of the snap-fitting section away from the entrance section, and the second closing limit groove is snap-fitted with the second snap-fitting protrusion so that the upper filter screen and the cover body can be detachably connected.

[0014] In one embodiment of the present application, a filter handle is provided at the bottom center of the upper filter.

[0015] In one embodiment of the present application, an annular clamping boss is provided on the upper surface of the metal bottom, and the metal bottom forms an annular step surface on the outer periphery of the annular clamping boss. The annular clamping boss is embedded in the bottom end opening of the outer shell, and the annular step surface is in contact with and cooperates with the end surface of the bottom end opening of the outer shell.

[0016] In one embodiment of the present application, the thermal insulation layer is an aerogel layer or a foaming agent layer.

[0017] In one embodiment of the present application, the thermal insulation interlayer is a vacuum interlayer, the metal bottom is provided with a vacuum port, and the vacuum port is sealed and closed by laser welding, brazing or sealing material welding.

[0018] In one embodiment of the present application, the vacuum port is a vacuum seam that penetrates the metal bottom, and the vacuum seam is sealed and closed by laser welding.

[0019] In one embodiment of the present application, the vacuum port is a conical hole that penetrates the metal bottom, and the aperture of the conical hole gradually decreases from the surface of the metal bottom facing away from the thermal insulation interlayer to the surface of the metal bottom facing the thermal insulation interlayer, and the conical hole is sealed and closed by brazing or sealing material welding.

[0020] In one embodiment of the present application, the vacuum port includes a groove arranged on the surface of the metal bottom facing away from the thermal insulation interlayer and a through hole penetrating the metal bottom at the lowest point of the groove, and the through hole is sealed and closed by brazing or sealing material welding.

[0021] In one embodiment of the present application, the gas adsorbent is a zirconium block.

[0022] A method for manufacturing a thermal insulation container as described in any one of the above, comprising the steps of: Manufacturing a non-metallic body, and providing an enamel coating on the inner wall and / or outer wall of the outer shell of the non-metallic body and the inner wall and / or outer wall of the inner container; A metal bottom is manufactured. If the thermal insulation interlayer of the thermal insulation container is a non-vacuum thermal insulation interlayer, after filling the thermal insulation layer between the outer shell and the inner liner of the non-metallic body, the metal bottom is sealed and bonded to the bottom opening of the outer shell of the non-metallic body by a high-temperature resistant adhesive to form a container body. If the thermal insulation interlayer of the thermal insulation container is a vacuum interlayer, a vacuum port is prepared on the metal bottom, and the metal bottom is sealed and bonded to the bottom opening of the outer shell of the non-metallic body by a high-temperature resistant adhesive to form a container body. The interlayer surrounded by the outer shell, the inner liner and the metal bottom is evacuated through the vacuum port, and the vacuum port is sealed and closed in a vacuum environment.

[0023] In one embodiment of the present application, the vacuuming of the interlayer formed by the outer shell, the inner liner and the metal bottom through the vacuuming port, and sealing the vacuuming port in a vacuum environment specifically includes: The container body is placed upside down in a vacuum device, and the outer shell, the inner liner and the metal bottom are vacuumed through the vacuum port. The vacuum port is then sealed and closed in the vacuum device by laser welding, brazing or sealing material welding, so that the outer shell, the inner liner and the metal bottom form a sandwich to form a heat-insulating sandwich isolated from the outside world.

[0024] In one embodiment of the present application, in the step of manufacturing the metal bottom, before the metal bottom is sealed and bonded to the bottom opening of the outer shell of the non-metallic body by a high-temperature resistant adhesive, a gas adsorbent is fixed on the surface of the metal bottom facing the thermal insulation interlayer, and after vacuum welding treatment, the gas adsorbent is activated at high temperature to allow the gas adsorbent to adsorb inert gases and stains that have not been extracted in the thermal insulation interlayer.

[0025] It can be seen from the above technical scheme that the present invention discloses a heat-insulating container, which includes a container body, the container body includes a non-metallic body and a metal bottom, the non-metallic body includes an outer shell and an inner liner which are sealed and fixedly connected at the top, the inner liner forms a cavity which is closed in the circumference and at the bottom and open at the top, the bottom of the outer shell is open and surrounds the outside of the inner liner, the metal bottom is sealed and bonded to the outer shell at the bottom opening of 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 provided on the surface of the metal bottom facing the vacuum interlayer, or a heat-insulating layer is filled in the heat-insulating interlayer.

[0026] It can be seen that the container body of the above-mentioned thermal insulation container adopts a structure combining non-metallic materials and metal materials, and the outer shell and the inner liner are integrally formed by non-metallic materials that are not easily corroded by acidic substances. In this way, when there is a vacuum demand, the bottom of the non-metallic body is sealed using a metal bottom that is easy to weld. In this way, a vacuum port can be reserved on the metal bottom, and the vacuum port can be welded after vacuuming to achieve vacuum treatment of the interlayer surrounded by the outer shell, the inner liner and the metal bottom, so that the vacuum interlayer is used to reduce the heat exchange inside and outside the container. The gas adsorbent in the vacuum interlayer can continuously adsorb the inert gas and stains remaining in the vacuum interlayer during the welding process to ensure the vacuum effect. In addition to vacuuming, an insulation layer can also be filled in the thermal insulation interlayer to reduce the heat exchange inside and outside the container. In this way, the above-mentioned thermal insulation container can store acidic substances while improving the insulation and cold preservation effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic structural diagram of a container body of a heat-insulating container provided in an embodiment of the present invention; Figure 2 A front view of a container body of a heat-insulating container provided in an embodiment of the present invention; Figure 3 for Figure 2 A-direction sectional view; Figure 4 A bottom view of a container body of a heat-insulating container provided in one embodiment of the present invention; Figure 5 A schematic structural diagram of a cover body of a heat preservation container provided in an embodiment of the present invention; Figure 6 A front view of a cover of a heat-insulating container provided in an embodiment of the present invention; Figure 7 for Figure 6 B-direction sectional view; Figure 8 for Figure 7 A partial enlarged schematic diagram of point C in the middle; Fig. 9 A schematic diagram of the combined structure of a container body and a cover body of a heat-insulating container provided in an embodiment of the present invention; Fig.10 A schematic diagram of the combination of a container body and a cover body of a heat-insulating container provided in an embodiment of the present invention; Fig.11 for Fig.10 D-section view in the figure; Fig.12 A bottom view of a container body of a heat-insulating container provided in another embodiment of the present invention; Fig.13 for Fig.12 The E-direction sectional view; Fig.14 A bottom view of a container body of a heat-insulating container provided in yet another embodiment of the present invention; Fig.15 for Fig.14 F-direction sectional view; Fig.16 A schematic structural diagram of a filter component of a heat-insulating container provided in an embodiment of the present invention; Fig.17 A cross-sectional view of the assembled container body, cover body and filter screen component of the heat-insulating container provided in an embodiment of the present invention.

[0029] In the figure: 1 is the container body; 110 is the non-metallic body; 111 is the outer shell; 112 is the inner liner; 113 is the thermal insulation interlayer; 120 is the metal bottom; 121 is the vacuum seam; 122 is the conical hole; 123 is the container groove; 124 is the through hole; 130 is the gas adsorbent; 2 is the cover body; 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 upper cover; 221 is the annular welding rib; 230 is the thermal insulation filler; 240 is the sealing ring; 3 is the filter component; 310 is the upper filter; 311 is the oblique clamping boss; 312 is the second clamping convex point; 313 is the filter handle; 320 is the lower filter; 321 is the first clamping convex point. DETAILED DESCRIPTION

[0030] One of the cores of the present invention is to provide a heat-insulating container, the structural design of which enables it to have the effect of long-term heat preservation and cold preservation, and at the same time enables it to store acidic substances and is not easily scratched or rusted.

[0031] Another core of the present invention is to provide a method for manufacturing the above-mentioned thermal insulation container.

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figures 1 to 4 , Figure 1 A schematic structural diagram of a container body of a heat preservation container provided in an embodiment of the present invention, Figure 2 A front view of a container body of a heat-insulating container provided in an embodiment of the present invention, Figure 3 for Figure 2 A-axis sectional view in the figure, Figure 4 A bottom view of the container body of the heat-insulating container provided in an embodiment of the present invention.

[0034] An embodiment of the present invention discloses a heat preservation 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, the non-metallic body 110 can be made of glass, ceramics or a polymer material that is resistant to high temperature, corrosion and chemically stable, such as plastic. Compared with metal materials, these non-metallic materials will not rust and are not easily corroded by acidic substances. There is no need to use an electrolytic process on the inner surface of the inner liner 112 to increase its own anti-rust function. The metal bottom 120 is only provided 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 contact the stored items in the inner liner 112 and will not be corroded by acidic substances. In addition, metal materials are easy to weld compared to non-metallic materials. Utilizing this feature, a vacuum port that is convenient for welding and sealing can be reserved on the metal bottom 120 during the manufacturing process, thereby achieving vacuum treatment of the thermal insulation interlayer 113 surrounded by the outer shell 111, the inner liner 112 and the metal bottom 120, and the vacuum port can be set to different shapes as needed, such as a customized pattern according to customer needs.

[0035] The inner liner 112 of the container body 1 forms a cavity which is circumferentially closed and at the bottom and open at the top. The bottom end of the outer shell 111 is open and surrounds the inner liner 112. The metal bottom 120 is sealed and bonded to the outer shell 111 at the bottom opening of the outer shell 111. The outer shell 111, the inner liner 112 and the metal bottom 120 form an insulating interlayer 113. The metal bottom 120 and the outer shell 111 are bonded by a high-temperature resistant adhesive. The high-temperature resistant adhesive must be able to withstand high temperatures above 550°C and ensure strong sealing after bonding without pores to ensure complete sealing so that the insulating interlayer 113 is completely isolated from the outside. The insulating interlayer 113 can be a vacuum interlayer, and a gas adsorbent 130 is fixedly arranged on the surface of the metal bottom 120 facing the vacuum interlayer, or in addition to vacuuming, an insulating layer can be filled in the insulating interlayer 113 to reduce heat exchange between the inside and outside of the container.

[0036] Compared with the prior art, the container body 1 of the thermal insulation container provided in the embodiment of the present invention adopts a structure combining non-metallic materials and metal materials, and uses non-metallic materials that are not easily corroded by acidic substances to manufacture the outer shell 111 and the inner liner 112 in one piece. In this way, when there is a vacuum demand, the non-metallic body 110 is sealed at the bottom by using the easily welded metal bottom 120. In this way, a vacuum port can be reserved on the metal bottom 120, and the vacuum port can be welded after vacuuming to achieve vacuum treatment of the interlayer surrounded by the outer shell 111, the inner liner 112 and the metal bottom 120, so that the heat exchange inside and outside the container is reduced by using the thermal insulation interlayer 113. The gas adsorbent 130 in the vacuum interlayer can continuously adsorb the inert gas and stains remaining in the vacuum interlayer during the welding process to ensure the vacuuming effect. In addition to vacuuming, an insulation layer can also be filled in the thermal insulation interlayer 113 to reduce the heat exchange inside and outside the container. In this way, the above-mentioned thermal insulation container can store acidic substances while improving the insulation and cold preservation effects.

[0037] 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 invisible to the naked eye due to problems such as process or raw materials. When high-pressure vacuum is applied, the pores will form convection, affecting the vacuum effect. Therefore, in one embodiment of the present invention, the inner wall and / or outer wall of the outer shell 111 is provided with an enamel coating, and the inner wall and / or outer wall of the inner liner 112 is provided with an enamel coating. The enamel coating can effectively block the above-mentioned pores, thereby ensuring the vacuum degree of the thermal insulation interlayer 113, and further ensuring the thermal insulation and cold preservation performance of the thermal insulation container. The enamel coating can also make the surface of the outer shell 111 or the inner liner 112 smoother, harder, and less likely to be scratched.

[0038] In addition to the container body 1, the heat preservation container provided in the embodiment of the present invention also includes a cover body 2, such as Figures 5 to 7As shown, the cover body 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-metallic materials, which are not limited here. The cover body 210 is detachably sealed and connected to the top of the non-metallic body 110. The connection method between the cover body 210 and the top of the non-metallic body 110 includes but is not limited to threaded connection. The upper cover 220 is fixedly sealed and connected to the top of the cover body 210, that is, the upper cover 220 is fixedly sealed and connected to the end of the cover body 210 away from the non-metallic body 110. A cavity is enclosed between the upper cover 220 and the cover body 210, and a thermal insulation filler 230 is arranged in the cavity. The thermal insulation filler 230 includes but is not limited to styrofoam material. The thermal insulation filler 230 is just above the top opening of the inner liner 112.

[0039] Specific as Figure 7 As shown, in one embodiment of the present application, in order to improve the thermal insulation effect, a groove 211 that can accommodate the top of the non-metallic body 110 is provided at the bottom end of the cover body 210. It can also be considered that a protrusion that protrudes away from the upper cover 220 is provided at the center of the bottom end of the cover body 210, and the cavity extends into the protrusion. A part of the thermal insulation filler 230 is arranged in the protrusion, and a first threaded structure is arranged between the inner peripheral groove wall and one of the outer peripheral groove walls of the groove 211, and a second threaded structure is arranged between the outer peripheral surface of the top of the non-metallic body 110 and one of the inner peripheral surfaces. The first threaded structure and the second threaded structure are threadedly matched to detachably and seal the cover body 210 and the non-metallic body 110. In this way, when the cover body 2 is assembled with the container body 1, part of the thermal insulation filler 230 can be embedded in the top end opening of the inner liner 112 along with the protrusion, thereby further improving the thermal insulation effect. Figures 9 to 11 shown.

[0040] To further optimize the above technical solution, in order to improve the sealing effect between the cover 2 and the container body 1 and avoid leakage, in one embodiment of the present application, Figure 7 As shown, an annular limiting boss 212 is provided at another position of the inner groove wall and the outer groove wall of the groove 211 opposite to the top of the first threaded structure. The annular limiting boss 212 cooperates with the top of the first threaded structure in the groove 211 to form a first closing limiting groove. A sealing ring 240 for contacting and cooperating with the top end face of the non-metallic body 110 is provided in the first closing limiting groove. When the cover body 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 body 2 and presses the sealing ring 240 to achieve sealing. Due to the limitation of the first closing limiting groove, the sealing ring 240 can be firmly fixed on the cover body 2 to avoid falling off.

[0041] In one embodiment of the present 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, an annular welding groove 213 is provided on the other of the mating connection surfaces of the cover body 210 and the upper cover 220, an annular overflow groove 214 is provided on the inner side and / or the outer side of the annular welding groove 213, and the top end surface 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, and the cover body 210 and the upper cover 220 are connected by melting welding through the annular welding rib 221 embedded in the annular welding groove 213, and the annular overflow groove 214 is used to accommodate excess molten welding ribs, such as Figure 7 and Figure 8 As shown, an annular welding groove 213 is provided on the top surface of the cover body 210, and annular overflow grooves 214 are respectively provided on the inner and outer sides of the annular welding groove 213, and the cross-sectional area of ​​the annular overflow groove 214 is smaller than the cross-sectional area of ​​the annular welding groove 213. An annular welding rib 221 is provided on the bottom surface of the upper cover 220, and the cross-sectional area of ​​the annular welding rib 221 is smaller than the welding area of ​​the annular welding groove 213. As a preferred implementation scheme, in a specific embodiment of the present application, the cross-sectional shapes of the annular welding rib 221, the annular welding groove 213 and the annular overflow groove 214 are all trapezoidal, and of course in other embodiments, they may also be Other shapes are not limited here. When the cover body 210 and the upper cover 220 are ultrasonically hot-melt welded, the annular welding rib 221 is in a molten state due to ultrasonic vibration, and axial pressure is applied to the cover body 210 and the upper cover 220. The annular welding rib 221 is in full contact with the annular welding groove 213 and welding between the two is achieved. Under the action of pressure, 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, which not only ensures the flatness of the matching connection surface between the cover body 210 and the upper cover 220, but also increases the molten welding surface, thereby improving the welding strength and firmness.

[0042] For the convenience of users, in one embodiment of the present application, the heat preservation container further includes a filter member 3, which can be an integrated structure or a split structure, so as to filter the tea leaves. Fig.16 As shown, in Fig.16 In the illustrated embodiment, the filter member 3 includes an upper filter 310 and a lower filter 320 which are detachably connected, and a filtering space is formed between the upper filter 310 and the lower filter 320. The upper filter 310 is detachably arranged on the container body 1 or the cover 2, so that tea and other soaked beverages can be placed in the filtering space between the upper filter 310 and the lower filter 320 to prevent the soaked beverages from scattering in the cavity of the inner tank 112, which is convenient for cleaning the residues of the soaked beverages. At the same time, the upper filter 310 can also be used alone.

[0043] The upper filter screen 310 and the lower filter screen 320 can be detachably connected in a variety of ways. In a specific embodiment of the present application, for example Fig.16 and Fig.17 As shown, one of the two places, the outer peripheral surface of the bottom end of the upper filter 310 and the inner peripheral surface of the top end of the lower filter 320, is evenly spaced along the circumferential direction with oblique clamping bosses 311, and the other of the two places, the outer peripheral surface of the bottom end of the upper filter 310 and the inner peripheral surface of the top end of the lower filter 320, is evenly spaced along the circumferential direction with first clamping protrusions 321. The bottom end of the upper filter 310 and the top end of the lower filter 320 are axially nested, and when they are rotated relative to each other through a preset angle until the first clamping protrusion 321 contacts and cooperates with the lower side of the oblique clamping protrusion 311, the upper filter 310 and the lower filter 320 are detachably connected. When it is necessary to disassemble the upper filter 310 and the lower filter 320, the upper filter 310 and the lower filter 320 can be rotated in the opposite direction of the assembly direction.

[0044] Specifically, the upper filter 310 adopts a variable diameter structure. The upper filter 310 includes a large diameter section and a small diameter section from top to bottom along the axial direction. 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 in the top opening of the lower filter 320, and the step surface between the small diameter section and the large diameter section can contact and cooperate with the top of the lower filter 320 to limit the two.

[0045] The upper filter screen 310 can be fixed to the container body 1, and can also be fixed to the bottom of the cover body 210. Specifically, in one embodiment of the present application, one of the upper filter screen 310 and the inner liner 112 is provided with a second snap-in protrusion 312, and the other of the upper filter screen 310 and the inner liner 112 is provided with an L-shaped snap-in groove. The entrance section of the L-shaped snap-in groove is arranged along the axial direction of the upper filter screen 310 or the inner liner 112, and the first end of the entrance section is an opening for the second snap-in protrusion 312 to enter. The second end of the entrance section is connected to the snap-in section of the L-shaped snap-in groove, and the snap-in section extends circumferentially along the upper filter screen 310 or the inner liner 112. A second closing limit groove is provided at one end of the snap-in section away from the entrance section, and the second closing limit groove is snap-fitted with the second snap-in protrusion 312 so that the upper filter screen 310 and the inner liner 112 can be detachably connected.

[0046] In another embodiment, one of the upper filter 310 and the cover body 210 is provided with a second snap-fit ​​protrusion 312, and the other of the upper filter 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 arranged along the axial direction of the upper filter 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 310 or the cover body 210, and a second closing limit groove is provided at one end of the snap-fit ​​section away from the entrance section, and the second closing limit groove is snap-fitted with the second snap-fit ​​protrusion 312 to make the upper filter 310 and the cover body 210 detachably connected.

[0047] like Fig.16 and Fig.17 As shown, in one embodiment of the present application, a filter handle 313 is set at the bottom center of the upper filter 310. The filter handle 313 includes a rod and an arc cone at the top of the rod, which is suitable for finger gripping and installation. The bottom end of the rod is fixed to the bottom center of the upper filter 310 by rivets.

[0048] To facilitate the assembly between the metal bottom 120 and the container body 1, as Figure 3 As shown, in one embodiment of the present application, an annular clamping boss is provided on the upper surface of the metal bottom 120, and the metal bottom 120 forms an annular step surface on the outer periphery of the annular clamping boss, the annular clamping boss is embedded in the bottom opening of the shell 111, and is interference fit with the bottom opening of the shell 111, and the annular step surface is in contact with the end surface of the bottom opening of the shell 111, so that the matching contact area between the metal bottom 120 and the container body 1 can be increased, thereby improving the sealing connection effect between the two.

[0049] In this case, the metal bottom 120 can be cast, or formed by stamping and bending a metal plate.

[0050] The thermal insulation layer can be made of a material with a thermal insulation effect. In one embodiment of the present application, the thermal insulation layer is an aerogel layer or a foaming agent layer that is convenient for filling the thermal insulation interlayer. When the aerogel or foaming agent is filled into the thermal insulation interlayer 113, the aerogel or foaming agent can discharge the residual gas in the thermal insulation interlayer 113, thereby ensuring that the thermal insulation interlayer 113 is completely filled with aerogel or foaming agent, thereby ensuring the thermal insulation effect.

[0051] As described above, if the heat-insulating interlayer 113 is a vacuum interlayer, the metal bottom 120 is provided with a vacuum port, which is sealed by laser welding, brazing or sealing material welding. The vacuum port may be in the shape of a seam, such as Figure 4 As shown, in a specific embodiment, the vacuum port is a vacuum seam 121 that penetrates the metal bottom 120. In this case, the vacuum seam 121 can be sealed and closed by laser welding. The container body after adhesive curing is inverted (the mouth faces downward and the metal bottom faces upward) and placed in a laser vacuum device. The heat-insulating interlayer 113 is vacuumed through the vacuum seam 121 to achieve a vacuum effect. The position and shape of the vacuum seam 121 on the metal bottom are scanned through a product jig supported by transparent glass. The system of the laser vacuum device automatically generates graphics and captures them in real time. The laser passes through the product jig to weld the vacuum seam 121.

[0052] It should be noted that the above-mentioned vacuum slit 121 can be provided with one or more, and the vacuum slit 121 can be provided with different shapes according to needs or customer requirements, such as Figure 4In the illustrated embodiment, the vacuum slit 121 is in a straight line shape. In other embodiments, the vacuum slit 121 may also be in a curved line shape, or in a specific pattern shape required by the customer.

[0053] Of course, the vacuum port can also adopt other structures, such as Fig.12 and Fig.13 In the illustrated embodiment, the vacuum port is a conical hole 122 that penetrates the metal bottom 120. The aperture of the conical hole 122 gradually decreases from the surface of the metal bottom 120 facing away from the thermal insulation interlayer to the surface of the metal bottom 120 facing the thermal insulation interlayer 113. The conical hole 122 is sealed and closed by brazing or sealing material welding. The sealing material welding can use metal granular material or glass sealing material. The metal granular material or glass sealing material is molten by the high temperature method of laser. The molten metal or glass flows to the conical hole 122 and then cools to return to a solid state, thereby sealing the conical hole 122.

[0054] like Fig.14 and Fig.15 As shown, in another embodiment, the vacuum port includes a groove 123 arranged on the surface of the metal bottom 120 facing away from the thermal insulation interlayer 113 and a through hole 124 penetrating the metal bottom 120 at the lowest point of the groove 123, and the through hole 124 is sealed and closed by brazing or sealing material welding.

[0055] Preferably, in one embodiment of the present application, the gas adsorbent 130 is a zirconium block. When the metal bottom 120 is welded and the vacuum interlayer is formed, single-point laser heating is performed to a temperature above 500°C in the area on the metal bottom 120 corresponding to the gas adsorbent, so as to activate the gas adsorbent and react to adsorb the inert gas and stains that have not been extracted between the inner and outer wall layers of the cup body.

[0056] The present application also provides a method for manufacturing the thermal insulation container as described in the above embodiment, the manufacturing method comprising the steps of: The non-metallic body 110 is manufactured, and an enamel coating is provided on the inner wall and / or outer wall of the outer shell 111 of the non-metallic body 110 and the inner wall and / or outer wall of the inner container 112 .

[0057] The material of the non-metallic body 110 can be glass, ceramic, plastic, etc. The enamel coating can fill the pores generated in the production and molding process of the non-metallic material, thereby ensuring airtightness.

[0058] The metal bottom 120 is manufactured. If the thermal insulation interlayer 113 of the thermal insulation container is a non-vacuum thermal insulation interlayer, after filling the thermal insulation layer between the outer shell 111 and the liner 112 of the non-metallic body 110, the metal bottom 120 is sealed and bonded to the bottom opening of the outer shell 111 of the non-metallic body 110 by a high-temperature resistant adhesive to form a container body 1. If the thermal insulation interlayer 113 of the thermal insulation container is a vacuum interlayer, a vacuum port is prepared on the metal bottom 120, and the metal bottom 120 is sealed and bonded to the bottom opening of the outer shell 111 of the non-metallic body 110 by a high-temperature resistant adhesive to form a container body 1. The interlayer surrounded by the outer shell 111, the liner 112 and the metal bottom 120 is evacuated through the vacuum port, and the vacuum port is sealed and closed in a vacuum environment.

[0059] In the above steps, one or more vacuum ports can be set, and the shape of the vacuum ports can be circular, square, or elliptical. It has been verified through actual tests that the surface area of ​​the weld must be greater than 2.0 square millimeters. If the surface area of ​​the weld is too small, it is not conducive to vacuuming and the thermal insulation effect of the product is unstable.

[0060] Furthermore, in the above steps, the interlayer formed by the outer shell 111, the inner liner 112 and the metal bottom 120 is evacuated through the vacuum port, and the vacuum port is sealed and closed under a vacuum environment. Specifically, the container body 1 is inverted in a vacuum device, and the interlayer formed by the outer shell 111, the inner liner 112 and the metal bottom 120 is evacuated through the vacuum port, and then the vacuum port is sealed and closed by laser welding, brazing or sealing material welding in the vacuum device, so that the interlayer formed by the outer shell 111, the inner liner 112 and the metal bottom 120 forms a thermal insulation interlayer 113 isolated from the outside world.

[0061] There are three main vacuum welding methods, one of which is laser vacuum welding. The laser welding equipment is set outside the vacuum equipment. The laser welding equipment scans the position and shape of the vacuum port on the metal bottom 120 through the transparent glass of the vacuum equipment. The system of the laser welding equipment automatically generates graphics and captures them. The laser passes through the transparent glass to weld the vacuum port on the metal bottom 120.

[0062] The second is laser vacuum melting welding, which uses metal granules to be placed at the vacuum port of the metal bottom 120, and the metal granules are melted by the high temperature of the laser welding equipment outside the vacuum equipment. The melted metal melt easily flows to the vacuum port, and the metal melt is cooled and restored to a solid state, thereby sealing the vacuum port and isolating the thermal insulation interlayer 113. The metal granules are the same metal as the metal bottom 120, and the same type of material is melted and fixed, so both firmness and strength are good and not easy to be damaged.

[0063] The third is vacuum welding of brazing / glass sealing materials, which is similar to the above-mentioned metal granular materials. The brazing / glass sealing materials are placed at the vacuum port of the metal bottom 120, and the high temperature of the laser welding equipment outside the vacuum equipment is used to melt the brazing / glass sealing materials. After melting, the brazing / glass sealing materials can easily flow to the vacuum port, and when they cool down and return to the solid state, the vacuum port can be sealed to isolate the vacuum layer.

[0064] Further optimizing the above technical solution, in one embodiment of the present application, in the step of manufacturing the metal bottom 120, the metal bottom 120 is sealed and bonded to the bottom opening of the shell 111 of the non-metallic body 110 by a high temperature resistant adhesive, such as Figure 3 As shown, a gas adsorbent 130 is fixed on the surface of the metal bottom 120 facing the thermal insulation interlayer 113. In this case, the gas adsorbent 130 is a zirconium block. After vacuum welding, the gas adsorbent 130 is activated at high temperature. The activation of the gas adsorbent 130 requires a high temperature of more than 500°C. After the vacuum welding is completed, a single-point laser is performed on the area where the gas adsorbent 130 is located to release high temperature to activate the gas adsorbent 130, so that it reacts and absorbs the inert gas and stains that have not been extracted in the thermal insulation interlayer 113.

[0065] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0066] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A heat-insulating container, characterized in that: include: A container body, the container body comprising a non-metallic body and a metal bottom, the non-metallic body comprising an outer shell and an inner liner which are sealed and fixedly connected at the top, the inner liner forming a cavity which is closed in the circumference and at the bottom and open at the top, the bottom of the outer shell is open and surrounds the outer liner, the metal bottom is sealed and bonded to the outer shell at the bottom opening of the outer shell, the outer shell, the inner liner and the metal bottom form a thermal insulation interlayer, the thermal insulation interlayer is a vacuum interlayer, a gas adsorbent is fixedly provided on the surface of the metal bottom facing the vacuum interlayer, or the thermal insulation interlayer is filled with a thermal insulation layer.

2. The heat-insulating container according to claim 1, characterized in that: 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.

3. The heat-insulating container according to claim 1, characterized in that: It also includes a cover body, which includes a cover body and an upper cover. The cover body is detachably and hermetically connected to the top of the non-metallic body, and the upper cover is fixedly and hermetically connected to the top of the cover body. A cavity is enclosed between the upper cover and the cover body, and a thermal insulation filler is arranged in the cavity.

4. The heat-insulating container according to claim 3, characterized in that: A groove is provided at the bottom end of the cover body to accommodate the top end of the non-metallic body, a first threaded structure is provided on one of the inner circumferential groove wall and the outer circumferential groove wall of the groove, a second threaded structure is provided on one of the outer circumferential surface and the inner circumferential surface of the top end of the non-metallic body, and the first threaded structure and the second threaded structure are threadedly matched to connect the cover body and the non-metallic body in a detachable and sealed manner.

5. The heat-insulating container according to claim 4, characterized in that: An annular limiting boss is provided at another position of the inner groove wall and the outer groove wall of the groove opposite to the top of the first threaded structure. The annular limiting boss cooperates with the top of the first threaded structure to form a first closing limiting groove in the 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.

6. The heat-insulating container according to any one of claims 3 to 5, characterized in that: An annular welding rib is provided on one of the mating connection surfaces of the cover body and the upper cover, 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 side and / or the outer side of the annular welding groove, a top end surface 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 embedded in the annular welding groove by the annular welding rib and connected by molten welding, and the annular overflow groove is used to accommodate excess molten welding ribs.

7. The heat-insulating container according to any one of claims 3 to 5, characterized in that: It also includes a filter component, which includes an upper filter and a lower filter that are detachably connected, a filtering space is formed between the upper filter and the lower filter, and the upper filter is detachably arranged on the container body or the cover.

8. The heat-insulating container according to claim 7, characterized in that: The bottom end outer circumference of the upper filter screen and the top end inner circumference of the lower filter screen are both uniformly spaced along the circumferential direction at one of the two places, and the bottom end outer circumference of the upper filter screen and the top end inner circumference of the lower filter screen are both uniformly spaced along the circumferential direction at the first clamping protrusions. The bottom end of the upper filter screen and the top end of the lower filter screen are axially nested, and when they are rotated through a preset angle relative to each other until the first clamping protrusion contacts and cooperates with the lower side of the oblique clamping protrusion, the upper filter screen and the lower filter screen can be detachably connected.

9. The heat-insulating container according to claim 7, characterized in that: One of the upper filter screen and the inner pot is provided with a second clamping protrusion, and the other of the upper filter screen and the inner pot is provided with an L-shaped clamping groove, the entrance section of the L-shaped clamping groove is arranged along the axial direction of the upper filter screen or the inner pot, the first end of the entrance section is an opening for the second clamping protrusion to enter, the second end of the entrance section is connected to the clamping section of the L-shaped clamping groove, the clamping section extends along the circumferential direction of the upper filter screen or the inner pot, and the end of the clamping section away from the entrance section is provided with a second closing limit groove, and the second closing limit groove is clamped and matched with the second clamping protrusion, so that the upper filter screen and the inner pot are detachably connected; Alternatively, one of the upper filter screen and the cover body is provided with a second snap-fitting protrusion, and the other of the upper filter screen and the cover body is provided with an L-shaped snap-fitting groove, the entrance section of the L-shaped snap-fitting groove is arranged along the axial direction of the upper filter screen or the cover body, the first end of the entrance section is an opening for the second snap-fitting protrusion to enter, the second end of the entrance section is connected to the snap-fitting section of the L-shaped snap-fitting groove, the snap-fitting section extends along the circumferential direction of the upper filter screen or the cover body, and a second closing limit groove is provided at one end of the snap-fitting section away from the entrance section, and the second closing limit groove is snap-fitted with the second snap-fitting protrusion so that the upper filter screen and the cover body can be detachably connected.

10. The heat-insulating container according to claim 7, characterized in that: A filter handle is arranged at the bottom center of the upper filter.

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

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

13. The heat-insulating container according to any one of claims 1 to 5 and 8 to 10, characterized in that: The heat-insulating 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.

14. The heat-insulating container according to claim 13, characterized in that: The vacuum port is a vacuum seam that penetrates the metal bottom, and the vacuum seam is sealed and closed by laser welding.

15. The heat-insulating container according to claim 13, characterized in that: The vacuum port is a conical hole that passes through the metal bottom. The diameter of the conical hole gradually decreases from the surface of the metal bottom facing away from the thermal insulation interlayer to the surface of the metal bottom facing the thermal insulation interlayer. The conical hole is sealed and closed by brazing or sealing material welding.

16. The heat-insulating container according to claim 13, characterized in that: The vacuum port includes a groove arranged on the surface of the metal bottom facing away from the thermal insulation interlayer and a through hole penetrating the metal bottom at the lowest point of the groove, and the through hole is sealed and closed by brazing or welding with sealing materials.

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

18. A method for manufacturing a heat-insulating container according to any one of claims 1 to 17, characterized in that: Includes steps: Manufacturing a non-metallic body, and providing an enamel coating on the inner wall and / or outer wall of the outer shell of the non-metallic body and the inner wall and / or outer wall of the inner container; A metal bottom is manufactured. If the thermal insulation interlayer of the thermal insulation container is a non-vacuum thermal insulation interlayer, after filling the thermal insulation layer between the outer shell and the inner liner of the non-metallic body, the metal bottom is sealed and bonded to the bottom opening of the outer shell of the non-metallic body by a high-temperature resistant adhesive to form a container body. If the thermal insulation interlayer of the thermal insulation container is a vacuum interlayer, a vacuum port is prepared on the metal bottom, and the metal bottom is sealed and bonded to the bottom opening of the outer shell of the non-metallic body by a high-temperature resistant adhesive to form a container body. The interlayer surrounded by the outer shell, the inner liner and the metal bottom is evacuated through the vacuum port, and the vacuum port is sealed and closed in a vacuum environment.

19. The manufacturing method according to claim 18, characterized in that: The vacuuming of the interlayer formed by the outer shell, the inner liner and the metal bottom through the vacuuming port, and sealing the vacuuming port in a vacuum environment specifically includes: The container body is inverted in a vacuum device, and the outer shell, the inner liner and the metal bottom are vacuumed through the vacuum port. The vacuum port is then sealed and closed in the vacuum device by laser welding, brazing or sealing material welding, so that the outer shell, the inner liner and the metal bottom form a vacuum interlayer isolated from the outside world.

20. The manufacturing method according to claim 18, characterized in that: In the step of manufacturing the metal bottom, before the metal bottom is sealed and bonded to the bottom opening of the outer shell of the non-metallic body by a high-temperature resistant adhesive, a gas adsorbent is fixed on the surface of the metal bottom facing the thermal insulation interlayer, and after vacuum welding, the gas adsorbent is activated at high temperature to allow the gas adsorbent to adsorb the inert gas and stains that have not been extracted in the thermal insulation interlayer.

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