CN116787015A - Heating and heat-preserving container adopting heating assembly bottom welding process and welding method - Google Patents
Heating and heat-preserving container adopting heating assembly bottom welding process and welding method Download PDFInfo
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- CN116787015A CN116787015A CN202310780528.4A CN202310780528A CN116787015A CN 116787015 A CN116787015 A CN 116787015A CN 202310780528 A CN202310780528 A CN 202310780528A CN 116787015 A CN116787015 A CN 116787015A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 137
- 238000003466 welding Methods 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000008569 process Effects 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000004321 preservation Methods 0.000 claims abstract description 10
- 238000004381 surface treatment Methods 0.000 claims description 7
- 238000011282 treatment Methods 0.000 claims description 7
- 238000005498 polishing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- 230000002277 temperature effect Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 241000190070 Sarracenia purpurea Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000035622 drinking Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 210000000936 intestine Anatomy 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
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- Pressure Vessels And Lids Thereof (AREA)
Abstract
The application relates to the field of liquid heaters, and provides a heating and heat-preserving container adopting a heating assembly bottom welding process and a welding method, wherein the heating and heat-preserving container comprises: the heating device comprises a shell, a liner and a heating assembly; the outer shell and the inner container form a vacuum layer; the inner container and the heating component form a liquid containing cavity; the inner bag includes: the upper pipe body and the lower pipe body are welded and connected; the lower end of the upper pipe body is provided with an extension section, the heating component is connected with the extension section in a welding way, and the extension section forms partial overlapping of the upper pipe body and the lower pipe body; the epitaxial section is positioned outside the vacuum layer such that the vacuum layer is not affected when the heating assembly is welded to the epitaxial section. The advantages are that: according to the application, when the heating component is welded on the liner, the high temperature effect of the heating component only affects the part of the epitaxial section, but not the lower pipe body part overlapped with the heating component, namely, the vacuum layer is not broken and leaked under the influence of the welding of the heating component, so that the heat preservation effect of the heating thermos cup is ensured.
Description
Technical Field
The application relates to the field of liquid heaters, in particular to a heating and heat-preserving container adopting a heating assembly bottom welding process and a welding method.
Background
With the improvement of life quality, people pay more and more attention to health, so that higher demands are made on life, such as necessary and quite frequent drinking water in life. For its own reasons, more and more people are beginning to habitually drink warm boiled water in order to protect the intestines and stomach and reduce irritation. In a room, whether at home or in a work environment, the hot water source is generally sufficient. However, when going out, especially when going out for a green or traveling outdoors, the traditional electric heating cup has no heating and heat preservation effects, and hot water becomes a luxury product. Even if a thermos cup is carried, it is often difficult to meet long-term drinking needs, accompanied by a large load. The advent of electric cups has solved this problem, and in many external environments, users not only have a container that heats up water at any time, but also provide a dedicated, sanitary and quick-heating experience. The small portable electric heating cup is large-scale used because of small volume and multifunction, and greatly meets the travel demands of people.
The electric cup generally forms a vacuum layer between the shell and the liner, and the bottom of the liner is welded with a heating component to heat water in the cup. The traditional assembly method of the electric heating water cup is to connect the shell and the liner, vacuumize the space between the shell and the liner to form a vacuum layer, electrolyze, polish/polish the shell and the liner, and weld the heating component in the liner. However, the welding is usually carried out under the high-temperature condition, the side wall of the vacuum layer is easy to damage, the heat preservation effect is affected, the reduction of the product yield and the improvement of the production cost are caused, and meanwhile, the assembly and construction difficulty of the electric cup is also high.
In order to solve the problem, if the heating component is connected to the liner before the step of forming the vacuum layer and then vacuumized, the influence of welding on the vacuum layer can be avoided, however, the cup body welded with the heating component is vacuumized, electrolyzed and the like, or the heating component is damaged and is not feasible (such as a thick film heating body); or the problems of difficult processes such as vacuumizing, electrolysis and the like, high process reject ratio and the like, and low yield and high cost are caused. Therefore, the structure which can avoid damaging the vacuum layer when the heating component is welded with the liner on the basis of the traditional assembly method is studied, and the method has great practical significance.
Disclosure of Invention
The application aims to overcome at least one defect (deficiency) of the prior art, and provides a heating and heat-preserving container adopting a bottom welding process of a heating assembly, which is used for solving the problem of connection between a liner with a vacuum layer and a heating structure.
An object of the present application is to provide a heating and insulating container employing a heating assembly bottom welding process, comprising: the heating device comprises a shell, a liner and a heating assembly; the outer shell and the inner container form a vacuum layer; the inner container and the heating component form a liquid containing cavity; the inner container comprises: the upper pipe body and the lower pipe body are welded and connected; the lower end of the upper pipe body is provided with an extension section, the heating component is connected with the extension section in a welding way, and the extension section forms part of the upper pipe body and the lower pipe body to be overlapped; the epitaxial section is positioned outside the vacuum layer, so that the vacuum layer is not affected when the heating component is welded on the epitaxial section; the heating and insulating container further comprises a cover, and the cover is detachably connected with the top of the shell.
In this solution, the housing is used to protect the structure inside the heating vessel and at the same time forms part of the vacuum wall; the inner container is a part of which the inner wall is in direct contact with the liquid; the heating component is used for heating the liquid in the liner; the vacuum layer is a sealed space formed by the shell wall and the liner wall and is used for preserving heat of liquid; the liquid containing cavity is a space for containing liquid.
In order to prevent the vacuum layer from being influenced when the heating component is welded, if an annular thickening strip is additionally arranged in the inner container wall to serve as a welding position of the heating component, welding lines are formed in the inner container, the appearance is not attractive, and meanwhile, the difficulty of the inner container internal welding process is too high to have engineering value; therefore, the liner of the application is provided with an upper pipe body and a lower pipe body; the inner wall of the upper tube body is a part which forms a liquid containing cavity with the heating component; the outer wall of the lower tube body is a part of the side wall of the vacuum layer; the design is that the high temperature effect of the heating component only affects the part of the extension section when the heating component is welded on the liner, but not the lower pipe body part overlapped with the heating component, namely the side wall of the vacuum layer is not negatively affected by welding, thereby ensuring the heat preservation effect of the heating thermos cup; in addition, compare in the inside setting up a thickening strip of inner bag, this scheme is in the same place its and lower body welding at the outer wall of last body, more convenient assembly.
Further, the upper end of the upper pipe body is connected with the shell to form a first welding position; the upper end of the lower pipe body is connected with the upper part of the epitaxial section of the upper pipe body to form a second welding position; the lower part of the lower pipe body is connected with the shell to form a third welding position; the heating component is connected with the lower part of the epitaxial section to form a fourth welding position, so that the heating component is fixed without being connected with other parts of the liner except the epitaxial section, which form a vacuum layer.
In the technical scheme, the inner container is connected with the outer shell in a welding way through the first welding position, and the position of the inner container is arranged at the upper end of the upper pipe body, so that the outer shell is beneficial to protecting the upper pipe body; the upper pipe body is connected with the lower pipe body through the second welding position, and the position of the upper pipe body is arranged above the epitaxial section, so that the whole part of the epitaxial section is ensured not to influence the vacuum layer when the heating assembly is welded and connected; the lower pipe body is connected with the shell through a third welding position, and the position of the third welding position is arranged at the lower part of the lower pipe body, so that the shell is beneficial to protecting the lower pipe body; and the heating component is connected with the inner wall of the liner through a fourth welding position. The two structures are firmly combined through a simple process through the arrangement of the welding positions, and the structure is more attractive.
Further, a gap is arranged between the epitaxial section and the lower pipe body.
In this technical scheme, form certain distance between the outer wall of epitaxial section and the inner wall of lower body, further reduce heating element when welding in the epitaxial section to the influence of lower body inner wall to the vacuum layer has been protected.
Further, the fourth welding position is located below the second welding position.
In the technical scheme, the outer extending section below the second welding position of the upper pipe body does not form the pipe wall of the vacuum layer, and the heating component and the outer extending section of the lower pipe body are operated at the position outside the side wall of the vacuum layer when being welded (fourth welding position).
Further, a positioning structure is arranged on the epitaxial section, and the heating component is abutted against the positioning structure.
In this technical scheme, location structure is used for spacing when being connected the heating element inner bag, conveniently assembles the heating element in suitable position, improves assembly work efficiency.
Further, the positioning structure is formed by the concave of the epitaxial section.
In this technical scheme, the extension section forms inwards protruding, heating element butt protruding lower part's arc department, protruding supports heating element to realize spacing effect.
Further, the heating component is provided with a welding edge, and the welding edge is welded and connected with the extension section; the length of the extension section is not smaller than the welding edge, so that the extension section forms complete shielding between the welding edge and the lower pipe body.
In the technical scheme, the shape of the welding edge is only required to be connected with the epitaxial section, and the length of the welding edge can be smaller than or flush with the epitaxial section. If the length of the extension section is smaller than that of the welding edge, welding operation is needed to be performed in the space between the welding edge and the lower pipe body in the process of connecting the heating component, so that the assembly is inconvenient, and the pipe wall of the lower pipe body is easily affected; therefore, the epitaxial section of this scheme is longer than the welding limit or flushes rather than it, makes heating element welded connection operation be in the inboard of epitaxial section completely, and the space is great easily assembly, also shelters from the welding limit completely through the epitaxial section simultaneously to prevent that welding process from causing the influence to lower body, thereby solved the problem that the welding difficulty and yield are low.
Further, the upper end of the lower pipe body is provided with a lap joint section, the lower pipe body is connected with the upper pipe body in a welding way through the lap joint section, and the lap joint section is positioned between the upper pipe body and the shell.
Another object of the present application is to provide a method for welding a heating and insulating container, for producing the heating and insulating container adopting the bottom welding process of the heating assembly, comprising the following steps:
s1, welding the lower part of an upper pipe body with the upper part of a lower pipe body to form a liner, and arranging an epitaxial section in the liner;
s2, the upper end of the upper pipe body is welded with the upper end of the shell, and the lower end of the lower pipe body is welded with the lower end of the shell to form a cup body of the double-layer hollow heating heat preservation container;
s3, vacuumizing the cup body to form a heat-insulating vacuum layer;
s4, carrying out surface treatment on the whole cup body;
s5, welding the heating component on the epitaxial section to form a liquid containing cavity.
Further, the surface treatment includes at least an electrolytic treatment or a polishing treatment.
Further, in step S5, the heat generating component is soldered to the epitaxial segment, specifically: and (3) abutting the heating component with the epitaxial section, and welding the heating component with the epitaxial section from the bottom opening of the lower pipe body by utilizing welding. Further, the welding position is welded by laser.
In the technical scheme, the epitaxial section is positioned in the liner in the step S1, so that the heating component in the step S5 is convenient to weld and cannot be in direct contact with the vacuum wall, and the vacuum layer is prevented from being damaged in the welding process. The lower part of the upper pipe body is welded with the upper part of the lower pipe body to form a second welding position. In step S2, the upper end of the upper pipe body is welded to the upper end of the outer shell to form a first welding position. The lower end of the lower pipe body is welded with the lower end of the shell to form a third welding position. In step S5, the heat generating component is soldered to the epitaxial section to form a fourth solder joint.
In addition, in the scheme, a vacuum layer is formed firstly, then surface treatments such as electroplating and polishing are carried out, and finally a heating component is welded, so that the heating component is welded in the liner under the condition of conventional treatment steps, and the vacuum layer is prevented from being damaged. Meanwhile, the method has simple steps and easy operation, and is suitable for the production of the actual heating heat preservation container.
Compared with the prior art, the application has the beneficial effects that:
(1) According to the application, through the arrangement of the upper pipe body, the lower pipe body and the extension section part, the high temperature effect of the heating component only affects the extension section part when being welded on the liner, but not the lower pipe body part overlapped with the heating component, namely the vacuum layer is not affected by welding polishing, so that the vacuum layer is thinned to form a weak point and is broken and leaked, thereby ensuring the heat preservation effect of the heating vacuum cup.
(2) The application welds the outer wall of the upper pipe body with the lower pipe body, and the length of the extension section is not less than the welding edge, thereby solving the problems of difficult welding and low yield.
Drawings
FIG. 1 is a schematic diagram of the structure of a heating and insulating container according to example 1.
Fig. 2 is a partial enlarged view of fig. 1.
FIG. 3 is a schematic diagram of the structure of a heating and insulating container according to example 2.
Fig. 4 is a partial enlarged view of fig. 3.
Fig. 5 is a flowchart of a welding method of example 3.
Reference numerals: the device comprises a shell 100, a liner 200, an upper pipe body 210, an extension section 211, a lower pipe body 220, a lap joint section 221, a liquid containing cavity 230, a positioning structure 240, a heating component 300, a welding edge 310, a vacuum layer 400, a first welding position 500, a second welding position 600, a third welding position 700 and a fourth welding position 800.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the application. For better illustration of the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
Referring to fig. 1 and 2, the present embodiment provides a heating and insulating container adopting a bottom welding process of a heating assembly 300, including: a housing 100, a liner 200, and a heating assembly 300; the outer case 100 and the inner case 200 form a vacuum layer 400; the liner 200 and the heating assembly 300 form a liquid chamber 230; the liner 200 includes: welding the connected upper and lower tubes 210 and 220; an extension section 211 is arranged at the lower end of the upper pipe body 210, the heating component is welded with the extension section 211, and the extension section 211 forms partial overlapping of the upper pipe body 210 and the lower pipe body 220; it is understood that the extension 211 is a connection location where the heating element 300 is welded to the liner 200. Specifically, the heating assembly 300 in this embodiment is a heating assembly formed by welding a heating tube, a steel disc and an aluminum plate.
The heating and insulating container further comprises a cover (not shown) provided with internal threads, the top of the housing is provided with external threads, and the cover is in threaded connection with the housing 100.
The extension 211 is located outside the vacuum layer 400, i.e., the extension 211 is disposed inside the liner 200, so that the vacuum layer 400 is not affected when the heating element 300 is welded to the extension 211. It will be appreciated that the vacuum layer 400 is a space defined by the walls of the non-outer extension 211 of the upper tube 210, the walls of the lower tube 220, and the walls of the outer shell 100.
A gap is provided between the extension 211 and the lower tube 220. The epitaxial section 211 is provided with a positioning structure 240, and the heating component abuts against the positioning structure 240. The positioning structure 240 is concavely formed by the extension 211. Specifically, the epitaxial section 211 is recessed at an angle to form a locating structure 240. The concave corresponding position of the lower tube 220 and the outer extension 211 may be a concave structure matched with the concave structure, or a linear structure.
The heating component is provided with a welding edge 310, and the welding edge 310 is welded with the extension section 211; the length of the extension 211 is not less than the welding edge 310 such that the extension 211 forms a complete barrier between the welding edge 310 and the lower tube body 220. Specifically, in this embodiment, the extension section 211 is longer than the welding edge 310, so that the welding operation of the heating assembly 300 is completely at the inner side of the extension section 211, the space is relatively large, the assembly is easy, and the welding edge 310 is completely shielded by the extension section 211, so that the influence of the welding process on the lower tube 220 is prevented, and the problems of difficult welding and low yield are solved.
The upper end of the upper pipe body 210 is connected with the outer shell 100 to form a first welding position 500; specifically, an upper lap joint part is arranged at the top of the shell 100, the upper lap joint part is connected with the upper pipe body 210 to form a first welding position 500, and the upper end of the lap joint part is flush with the top of the upper pipe body 210; the upper end of the lower pipe body 220 is connected to the upper portion of the extension section 211 of the upper pipe body 210 to form a second welding position 600; the lower portion of the lower pipe body 220 is connected with the outer case 100 to form a third welding position 700; specifically, a lower lap joint part is provided at the bottom of the housing 100, the lower lap joint part is connected with the lower pipe body 220 to form a third welding position 700, and the bottom of the lower lap joint part is flush with the bottom of the lower pipe body 220; the heating element 300 is connected to the extension 211 to form a fourth welding site 800, so that the heating element 300 is not required to be connected to other parts of the liner 200 except the extension 211, which form the vacuum layer 400.
The upper end of the lower pipe body 220 is provided with a lap joint section 221, the lower pipe body 220 is welded to the upper pipe body 210 through the lap joint section 221, and the lap joint section 221 is located between the upper pipe body 210 and the outer shell 100.
In this embodiment, the liner 200 of the heating and insulating container is configured as an upper tube 210 and a lower tube 220, and the upper tube 210 is connected to the heating assembly 300 through the arrangement of the extension section 211. The design is such that the high temperature effect of the heating assembly 300 only affects the part of the extension section 211 when being welded on the liner 200, but not the part of the lower pipe body 220 overlapped with the extension section, namely the vacuum layer 400 is not negatively affected by welding, thereby ensuring the heat preservation effect of the heating thermos cup; in addition, compared with the inner part of the liner 200 provided with a thickened strip, the scheme is that the outer wall of the upper pipe body 210 is welded with the lower pipe body 220, so that the assembly is more convenient.
Example 2
Referring to fig. 3 and 4, this embodiment provides a heating and insulating container using a bottom welding process of a heating assembly 300, which is similar to embodiment 1 in structure, except that: the heating element 300 in this embodiment is a thick film heater plate with a steel plate cross-section that directly forms the weld edge 310.
Example 3
As shown in fig. 5, the present embodiment provides a welding method of a heating and insulating container for producing the heating and insulating container provided in embodiment 1 and embodiment 2, comprising the steps of:
s1, welding the lower part of an upper pipe body with the upper part of a lower pipe body to form a liner, and arranging an epitaxial section in the liner;
s2, the upper end of the upper pipe body is welded with the upper end of the shell, and the lower end of the lower pipe body is welded with the lower end of the shell to form a cup body of the double-layer hollow heating heat preservation container;
s3, vacuumizing the cup body to form a heat-insulating vacuum layer;
s4, carrying out surface treatment on the whole cup body;
s5, welding the heating component on the epitaxial section to form a liquid containing cavity.
The surface treatment at least comprises electroplating treatment and polishing treatment; in step S5, the heat generating component is soldered to the epitaxial segment, specifically: the heating component is abutted with the epitaxial section, and the heating component is welded and connected with the epitaxial section by laser welding from the bottom opening of the lower pipe body.
It should be understood that the foregoing examples of the present application are merely illustrative of the present application and are not intended to limit the present application to the specific embodiments thereof. Any modification, equivalent replacement, improvement, etc. that comes within the spirit and principle of the claims of the present application should be included in the protection scope of the claims of the present application.
Claims (10)
1. A heated insulated container employing a heating assembly bottom welding process, comprising: the heating device comprises a shell, a liner and a heating assembly;
the outer shell and the inner container form a vacuum layer;
the inner container and the heating component form a liquid containing cavity;
the inner container is characterized by comprising: the upper pipe body and the lower pipe body are welded and connected;
the lower end of the upper pipe body is provided with an extension section, the heating component is connected with the extension section in a welding way, and the extension section forms part of the upper pipe body and the lower pipe body to be overlapped;
the epitaxial section is positioned outside the vacuum layer, so that the vacuum layer is not affected when the heating component is welded on the epitaxial section;
the heating and insulating container further comprises a cover, and the cover is detachably connected with the top of the shell.
2. The heating and heat-preserving container adopting a bottom welding process of a heating assembly according to claim 1, wherein the upper end of the upper pipe body is connected with the shell to form a first welding position;
the upper end of the lower pipe body is connected with the upper part of the epitaxial section of the upper pipe body to form a second welding position;
the lower part of the lower pipe body is connected with the shell to form a third welding position;
the heating component is connected with the epitaxial section to form a fourth welding position, so that the heating component is fixed without being connected with other parts of the liner except the epitaxial section, which form a vacuum layer.
3. A heated holding vessel employing a heating assembly bottom welding process as defined in claim 2 wherein said fourth weld location is below said second weld location.
4. The heating and insulating container adopting a heating assembly bottom welding process according to claim 1, wherein a positioning structure is arranged on the epitaxial section, and the heating assembly abuts against the positioning structure.
5. A heated and insulated container employing a heating assembly bottom welding process as defined in claim 4 wherein said locating structure is formed by recessing said epitaxial section.
6. A heating and insulating container adopting a bottom welding process of a heating assembly according to any one of claims 1 to 5, wherein the heating assembly is provided with a welding edge, and the welding edge is welded with the extension section; the length of the extension section is not smaller than the welding edge, so that the extension section forms complete shielding between the welding edge and the lower pipe body.
7. A heating and heat preserving container adopting a heating assembly bottom welding process according to any one of claims 1-5, wherein an overlap section is arranged at the upper end of the lower pipe body, the lower pipe body is welded with the upper pipe body through the overlap section, and the overlap section is located between the upper pipe body and the outer shell.
8. A method of welding a heated insulated container for producing a heated insulated container according to any of claims 1-7 using a heating assembly bottom welding process, comprising the steps of:
s1, welding the lower part of an upper pipe body with the upper part of a lower pipe body to form a liner, and arranging an epitaxial section in the liner;
s2, the upper end of the upper pipe body is welded with the upper end of the shell, and the lower end of the lower pipe body is welded with the lower end of the shell to form a cup body of the double-layer hollow heating heat preservation container;
s3, vacuumizing the cup body to form a heat-insulating vacuum layer;
s4, carrying out surface treatment on the whole cup body;
s5, welding the heating component on the epitaxial section to form a liquid containing cavity.
9. A method of welding a heated and insulated container according to claim 8, wherein the surface treatment comprises at least an electrolytic treatment or a polishing treatment.
10. The welding method of a heating and insulating container according to claim 8, wherein in step S5, the heating element is welded to the extension section, specifically: and (3) abutting the heating component with the epitaxial section, and welding the heating component with the epitaxial section from the bottom opening of the lower pipe body by utilizing welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310780528.4A CN116787015A (en) | 2023-06-28 | 2023-06-28 | Heating and heat-preserving container adopting heating assembly bottom welding process and welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310780528.4A CN116787015A (en) | 2023-06-28 | 2023-06-28 | Heating and heat-preserving container adopting heating assembly bottom welding process and welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116787015A true CN116787015A (en) | 2023-09-22 |
Family
ID=88046549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310780528.4A Pending CN116787015A (en) | 2023-06-28 | 2023-06-28 | Heating and heat-preserving container adopting heating assembly bottom welding process and welding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116787015A (en) |
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2023
- 2023-06-28 CN CN202310780528.4A patent/CN116787015A/en active Pending
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