WO2017156971A1 - 用于炊具的内锅及其制造方法、炊具 - Google Patents

用于炊具的内锅及其制造方法、炊具 Download PDF

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Publication number
WO2017156971A1
WO2017156971A1 PCT/CN2016/094672 CN2016094672W WO2017156971A1 WO 2017156971 A1 WO2017156971 A1 WO 2017156971A1 CN 2016094672 W CN2016094672 W CN 2016094672W WO 2017156971 A1 WO2017156971 A1 WO 2017156971A1
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WO
WIPO (PCT)
Prior art keywords
pot
pot body
handle portion
handle
annular
Prior art date
Application number
PCT/CN2016/094672
Other languages
English (en)
French (fr)
Inventor
徐腾飞
吴培洪
Original Assignee
佛山市顺德区美的电热电器制造有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201610157062.2A external-priority patent/CN107198432B/zh
Priority claimed from CN201620211844.5U external-priority patent/CN205568651U/zh
Application filed by 佛山市顺德区美的电热电器制造有限公司, 美的集团股份有限公司 filed Critical 佛山市顺德区美的电热电器制造有限公司
Priority to JP2017564110A priority Critical patent/JP6689890B2/ja
Priority to KR1020187005967A priority patent/KR20180035876A/ko
Publication of WO2017156971A1 publication Critical patent/WO2017156971A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J45/00—Devices for fastening or gripping kitchen utensils or crockery
    • A47J45/06—Handles for hollow-ware articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/051—Deforming double-walled bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/05—Cooking vessels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00—Receptacles
    • Y10S220/912—Cookware, i.e. pots and pans

Definitions

  • the present invention relates to the field of household appliances, and in particular to an inner pot for a cooker, a method of manufacturing the same, and a cookware.
  • the inner pot equipped with the rice cooker generally has no handle, which brings a certain inconvenience to the consumer when moving the inner pot. Even if there is a handle on the existing inner pot, two symmetrical handles are provided on the outer side wall of the inner pot.
  • the inner pot having the handle is placed in the rice cooker, the consumer needs It is only inconvenient to be placed in a certain position, which brings certain inconvenience to the consumers. Moreover, once the misplacement occurs, it will also cause a safety hazard.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. To this end, it is an object of the present invention to provide an inner pot for a cooker that is convenient to use and does not pose a safety hazard.
  • Another object of the present invention is to provide a cooker having the above inner pot.
  • Still another object of the present invention is to provide a method of manufacturing an inner pot for a cookware.
  • An inner pot for a cooker comprising: a pot body formed into a drum type in which a pot mouth is contracted inward, and a peripheral wall of the pot body has a circumferential direction along the pot body An extended step portion; and a handle portion, the handle portion is coupled to the step portion, and the handle portion is formed in an annular shape extending horizontally outward in a circumferential direction of the pot body.
  • the handle is replaced by the handle, and the handle is replaced by the traditional handle, so that the function of the handle can be fully realized, and the use is convenient and does not pose a safety hazard.
  • the positioning and fixing of the handle portion by the step portion ensures the accuracy of the processing position of the handle portion, and the handle portion can ensure the firmness of the fixing through the pre-designed step portion, and can also reduce the processing procedure and reduce the processing. Difficulty and cost, and does not affect the appearance of the inner pot.
  • the step portion includes: a horizontally extending annular flat portion; and a vertically extending annular cylindrical portion, a lower end of the annular cylindrical portion being connected to an inner end of the annular flat portion, wherein The handle is supported on the annular flat portion.
  • the inner peripheral surface of the handle portion is in an interference fit with the annular cylindrical portion.
  • an upper surface of the handle portion is coupled to the annular post portion to effect connection of the handle portion to the pan body.
  • a circular arc transition is formed between the upper surface of the handle portion and the annular cylindrical portion.
  • the inner peripheral wall of the pot body is provided with an inwardly projecting projection at a position opposite to the step portion.
  • the pot body is formed by stretching and expanding a composite disc composed of a stainless steel layer and an aluminum alloy layer, wherein the aluminum alloy layer is located inside the stainless steel layer.
  • the pot mouth of the pot body is provided with an outwardly extending pot mouth flange.
  • the handle portion is formed by bending a strip-shaped stainless steel plate and welded to the step portion by argon arc welding.
  • the handle portion is formed of an annular rim material cut from the mouth of the pot body and welded to the step portion by argon arc welding.
  • the step portion is roll formed.
  • a cooker according to a second aspect of the invention comprises an inner pot for a cooker according to the above first aspect of the invention.
  • the inner pot includes a pot body and a handle portion, the pot body being formed into a drum type in which the pot mouth is contracted inward, and a peripheral wall of the pot body a stepped portion extending along a circumferential direction of the pot body, the handle portion is coupled to the step portion, and the handle portion is formed as a ring extending horizontally outward in a circumferential direction of the pot body a shape, the manufacturing method comprising the steps of: S1, making a pot body that is inwardly contracted into a drum shape, and rolling the step portion on an outer peripheral wall of the pot body by a rolling device; a handle portion of the annular structure; S3, assembling the handle portion to the pot body of step S1 and pressing at the step portion, and performing ring welding with a argon arc welding wire.
  • the step S1 specifically includes: S11, stretching a composite disc composed of a stainless steel layer and an aluminum alloy layer into a cylindrical shape to be lifted, wherein the aluminum alloy layer is located The inner side of the stainless steel layer; S12, the metal body is cleaned with a metal cleaning liquid; S13, the body to be lifted after the step S12 is cleaned and the drum is inwardly contracted into a drum type. S14, the pot mouth of the body to be flanged is bent outward to form a pan mouth; S15, the outer peripheral wall of the pot body having the mouth of the pan is rolled by a rolling device The step portion is rolled out, wherein a projection is formed on the inner peripheral wall of the pot body during the rolling process.
  • the outer diameter of the pan flange is D1
  • the step portion includes a horizontally extending annular flat portion and a vertically extending annular cylindrical portion, the annular cylindrical portion having a diameter D2 and The height is H1, wherein the D1, D2 satisfy: D2>D1, and the width W1 of the annular flat portion is between 0.3 mm and 1.5 mm.
  • the step S2 specifically includes: S21, bending a strip-shaped stainless steel plate into an annular shape, and leaving a machining allowance to obtain a handle portion to be welded; S22, the The two ends of the welding handle are welded by argon arc welding, and the welding portion is smoothed to obtain the handle portion to be processed; S23, the handle portion to be processed is processed into a required size by a numerically controlled lathe to obtain the Handle.
  • the handle portion is processed to a size determined according to the size of the step portion processing.
  • the handle portion has a thickness H2 and an inner diameter D3, wherein the D2, D3 satisfy: D3 ⁇ D2, and the H1, H2 satisfy: H2 ⁇ H1.
  • the step S3 specifically includes: S31, assembling the handle portion to the pot body by a hydraulic press, wherein an inner circumferential surface of the handle portion and the step portion are The annular post portion has an interference fit, the lower surface of the handle portion is in close contact with the annular flat portion; S32, the pot body is filled with water, and the liquid level of the water is located in the pot body Above the protrusion and having a height difference of at least 10 mm; S33, placing the pot body filled with water on a welding tool, and pressing the handle portion on the step portion with the welding tool The argon-arc welding wire is used for ring welding, and the upper surface of the handle portion is connected with the annular column surface and transitioned through a circular arc.
  • the method of manufacturing the inner pot further includes: S4, the handle portion to be welded
  • the pot body is removed by a grinding device to remove the weld slag at the weld, and the outer surface of the pot body is polished with a polishing apparatus.
  • FIG. 1 is a schematic structural view of a pot body to be lifted according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a pot body according to an embodiment of the present invention.
  • Figure 3 is a schematic enlarged view of the step in Figure 2;
  • FIG. 4 is a schematic structural view of a handle portion according to an embodiment of the present invention.
  • Fig. 5 is a structural schematic view of an inner pot for a cooker according to an embodiment of the present invention.
  • first and second are used for descriptive purposes only, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining “first” and “second” may include one or more of the features either explicitly or implicitly. Further, in the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specified.
  • the inner pot 100 can be applied to a cookware such as a rice cooker.
  • the inner pot 100 is applied to a rice cooker as an example for description.
  • the inner pot 100 can also be applied to a cooker such as an electric pressure cooker.
  • an inner pot 100 for a cookware such as a rice cooker includes a pot body 1 and a handle portion 3.
  • the pot body 1 is formed into a drum type in which the pot mouth is contracted inward.
  • the direction “inner” can be understood as a direction toward the center of the pot body 1, and the opposite direction is defined as “outer”, that is, a direction away from the center of the pot body 1.
  • the top of the pot body 1 is open to constitute a pot mouth, in the direction from the middle of the pot body 1 to the mouth of the pot and the bottom of the pot, the pot mouth and the bottom of the pot, respectively.
  • the contraction toward the center of the pot body 1 causes the entire pot body 1 to be generally drum-shaped.
  • the outer peripheral wall of the pot body 1 has a step portion 2 extending in the circumferential direction of the pot body 1, and the step portion 2 surrounds the outer circumference of the pot body 1 and is annular.
  • the handle portion 3 is coupled to the step portion 2, and the handle portion 3 is formed in an annular shape extending horizontally outward in the circumferential direction of the pan body 1, for example, as shown in Figs. 4 and 5, at the step portion 2 There is a circle of horizontally placed rings (ie handle 3).
  • the handle portion 3 when the inner pot 100 is applied to a cookware such as a rice cooker, since the handle portion 3 is a ring-shaped one, no matter how the inner pot 100 is placed, there is no conventional two
  • the inner pot 100 of the symmetrical handles poses a safety hazard due to the misplacement, thereby improving the safety of the inner pot 100, and the user can place it at will, thereby greatly facilitating the user.
  • the inner pot 100 for a cooker such as a rice cooker according to an embodiment of the present invention, by providing the handle 3, the handle 3 is replaced by a conventional handle, and the function of the handle can be fully realized, which is convenient to use and does not bring safety. Hidden dangers. Moreover, the positioning and fixing of the handle portion 3 by the step portion 2 ensures the accuracy of the processing position of the handle portion 3, and the handle portion 3 can ensure the firmness of the fixing by the pre-designed step portion 2, and can also reduce the processing. The process reduces the processing difficulty and cost without affecting the appearance of the inner pot 100.
  • the longitudinal section of the step portion 2 is similar to the L-shape, and the step portion 2 includes: a horizontally extending annular planar portion 22 and a vertically extending annular cylindrical portion 21, annular
  • the cylindrical portion 21 may be a cylindrical surface, and the lower end of the annular cylindrical portion 21 is connected to the inner end of the annular flat portion 22, and the annular cylindrical portion 21 is located inside the annular flat portion 22 and extends upward.
  • the handle portion 3 is supported on the annular flat portion 22.
  • the handle portion 3 is horizontally disposed and includes an upper surface 32, a lower surface 33, and an inner peripheral surface 31 connected between the inner end of the upper surface and the inner end of the lower surface 33 (of course also An outer peripheral surface connected between the outer end of the upper surface and the outer end of the lower surface 33 is included.
  • the inner peripheral surface 31 of the handle portion 3 can be interference-fitted with the annular cylindrical portion 21, and the inner peripheral surface 31 of the handle portion 3 and the annular cylindrical portion 21 are bonded together by an interference fit, thereby Conducive to welding, can reduce the adverse effects of welding, and improve the yield.
  • the lower surface 33 of the handle portion 3 can be closely adhered to the annular flat portion 22, and the annular flat portion 22 functions as a support and limit for the handle portion 3, so that the height of the handle portion 3 can be better controlled and maintained.
  • the upper surface 32 of the handle portion 3 is coupled to the annular cylindrical portion 21 to effect connection of the handle portion 3 with the pot body 1.
  • the welding of the lower surface 33 of the handle portion 3 and the inner peripheral surface 31 of the handle portion 3 and the step portion 2 can be reduced, and only the upper surface 32 of the handle portion 3 and the annular cylindrical portion 21 of the step portion 2 can be performed.
  • the welding between the handle portions 3 can be firmly fixed to the step portion 2, thereby reducing the number of processing steps, reducing the processing difficulty and cost, and not affecting the appearance of the inner pot 100.
  • an arc transition occurs between the upper surface 32 of the handle portion 3 and the annular cylindrical portion 21, as shown in FIG.
  • the inner peripheral wall of the pot body 1 is provided with a projection 23 projecting inward at a position opposite to the step portion 2.
  • the projection 23 may be a turn that protrudes inward from a portion of the inner peripheral wall of the pan 1 and surrounds the inner circumference of the pan 1.
  • the projections 23 can indicate the position of the step portion 2 corresponding to the inside of the pot body 1, and thus, when welded, can be used to calibrate the amount of water used for water cooling in the pot body 1.
  • the pot body 1 is formed by stretching and expanding a composite disc composed of a stainless steel layer 12 and an aluminum alloy layer 11 , wherein the aluminum alloy layer 11 is located inside the stainless steel layer 12 .
  • the portion to be welded on the pot body 1 is a stainless steel layer 12, and the thickness of the stainless steel layer 12 is preferably uniform throughout to facilitate welding.
  • the pot body 1 is provided with an outwardly extending pot mouth flange 13 , the pot mouth flange 13 is a circle, and the pot mouth flange 13 can be composed of the pot body 1
  • the top is folded outwards horizontally.
  • the step portion 2 can be formed by roll forming, and the handle portion 3 can be formed by bending a strip-shaped stainless steel plate, thereby improving the utilization of the material, and the handle portion 3 can be welded to the step portion 2 by argon arc welding.
  • the handle portion 3 can also be formed by an annular rim material (ie, the pan flange 13) cut from the mouth of the pot body 1 and welded to the step portion 2 by argon arc welding to maximize the utilization.
  • the existing waste materials have the purpose of turning waste into treasure.
  • the pan flange 13 is preferably removed before the pan 1 is processed into a drum shape in which the pan is contracted inwardly, for example, when the cylindrical pan as shown in FIG. 1 is formed.
  • the pan flange 13 is cut to allow the pan cuff 13 to smoothly pass through the pan and be mounted to the step 2 when the pan flange 13 is subsequently welded.
  • a cooker according to an embodiment of the second aspect of the present invention includes an inner pot 100 for a cooker according to the above-described first aspect of the present invention.
  • the above inner pot 100 according to an embodiment of the present invention can be widely used in the field of cookware, especially electric cookers, such as rice cookers, electric pressure cookers and the like.
  • the inner pot 100 includes a pot body 1 and a handle portion 3, and the pot body 1 is formed into a drum type in which the pot mouth is contracted inward, and the outer peripheral wall of the pot body 1 has a pot body 1 along the pot body 1.
  • the circumferentially extending step portion 2 is attached to the step portion 2, and the handle portion 3 is formed in an annular shape extending horizontally outward in the circumferential direction of the pan body 1.
  • the manufacturing method of the inner pot 100 for the cookware comprises the following steps:
  • the pot body 1 is made to shrink inwardly into a drum type, and the step portion 2 is rolled on the outer peripheral wall of the pot body 1 by a rolling device;
  • the handle portion 3 is assembled to the pot body 1 of the step S1 and pressed at the step portion 2, and the argon arc welding wire is used for the ring welding.
  • a drum-shaped pot body 1 is manufactured, and a ring-shaped step portion 2 is rolled on the outer peripheral wall of the pot body 1 at a position where the nesting handle portion 3 is required to be wound by a rolling device;
  • the annular handle portion 3 is taken out, and the handle portion 3 is machined to a desired size by a numerically controlled lathe;
  • the manufactured handle portion 3 is assembled to the pot body 1 having the step portion 2 and pressed It is tightly pressed on the step portion 2, and is subjected to ring welding by a argon arc welding wire.
  • the step S1 is not necessarily completed before the step S2, and the two may be interchanged or may be performed simultaneously.
  • the pot body 1 and the step portion 2 are generally produced in the step S1, and the handle portion 3 is formed in the step S2 because the processing of the step portion 2 is biased, and the handle portion 3 is It is relatively easy to process.
  • the handle portion 3 which is post-processed can be used to compensate for the deviation, which is a preferable technical solution.
  • step S1 specifically includes:
  • the composite disc consisting of the stainless steel layer 12 and the aluminum alloy layer 11 is stretched into a cylindrical shape (ie, straight body), wherein the aluminum alloy layer 11 is located inside the stainless steel layer 12, as shown in FIG. ;
  • step S15 the step portion 2 is located on the outer peripheral wall of the pot body 1 and the position of the handle portion 3 is required to be nested.
  • the position can be appropriately designed in advance, corresponding to the specific structure of the rice cooker or the electric pressure cooker in use, generally It is placed at the upper part of the middle of the pot body 1 and is horizontally arranged in a complete ring structure.
  • the step portion 2 forms a projection 23 on the inner peripheral wall of the pot body 1.
  • the outer diameter of the pan flange 13 is D1
  • the step portion 2 includes a horizontally extending annular flat portion 22 and a vertically extending annular cylindrical portion 21 having a diameter D2 and a circular cylindrical portion 21
  • the height is H1, where D1, D2 satisfy: D2>D1
  • the width W1 of the annular flat portion 22 is between 0.3 mm and 1.5 mm both inclusive.
  • step S2 specifically includes:
  • the handle to be processed is processed into a required size by a numerically controlled lathe to obtain a handle portion 3.
  • the handle portion 3 is processed to have a size determined according to the size of the step portion 2 to be processed. Specifically, the thickness of the handle portion 3 is H2 and the inner diameter is D3, wherein D2 and D3 satisfy: D3 ⁇ D2, and H1 and H2 satisfy: H2 ⁇ H1.
  • the processing of the step portion 2 may vary, and the handle portion 3 is relatively easy to process.
  • the processing of the handle portion 3 can be used to compensate.
  • D3 By making D3 smaller than D2, the annular column portion 21 of the step portion 2 and the handle portion 3 are interference fit, so that the handle portion 3 can be better fitted to the step portion 2 of the pot body 1, and the pot body 1 and There is no gap at the contact of the upper surface of the handle portion 3 to facilitate welding, which can reduce the adverse effects of welding and improve the yield.
  • H2 is smaller than H1
  • the thickness of the handle portion 3 is limited, so that the upper portion of the handle portion 3 can be welded to the portion of the annular columnar portion 21 of the step portion 2 that is higher than the handle portion 3, and a circular arc transition is formed.
  • the whole body 1 has no effect.
  • the inner diameter D3 of the handle portion 3 is between D2 and D1, that is, the handle portion 3 can be sleeved from the pan mouth 13 Into, but when the card is stuck to the step 2, it is an interference fit, and the width of the handle 3 is half of the difference between the inner and outer diameters, which is equivalent to the width of the handle, not too small, and needs to be convenient.
  • it can usually be designed to be around 1cm-3cm (including the endpoint value).
  • step S3 specifically includes:
  • the handle portion 3 is assembled to the pot body 1 by a hydraulic press, wherein the inner peripheral surface of the handle portion 3 and the annular cylindrical portion 21 of the step portion 2 are interference fit, and the lower surface of the handle portion 3 and the annular plane The part 22 is closely fitted;
  • the pot body 1 is filled with water, the liquid level of the water is located above the protrusion 23 of the pot body 1 and the height difference is at least 10 mm;
  • water can be placed in the pot body 1 at a higher water level during welding. Specifically, the water can be directly tap water, so that The aluminum alloy layer 11 of the pot body 1 can be prevented from melting during welding, and the high temperature welding problem of the stainless steel and the stainless steel-aluminum alloy composite member at a high temperature is solved.
  • the handle portion 3 and the step portion 2 of the pot body 1 are pressed by the tooling during welding, which can greatly reduce the deformation of the step portion 2 and the handle portion 3 of the pot body 11 caused by the excessively high welding temperature, thereby affecting the welding. bad.
  • the handle portion 3 and the pot body 1 are expanded at a high temperature. If not pressed, on the one hand, a gap is formed between the handle portion 3 and the pot body 1 when the weld is larger than 0.1 mm. It is easy to weld through the pot body 1.
  • the handle portion 3 also creates a large gap with the annular column portion 21 of the step portion 2 during expansion, resulting in dimensional instability and affecting the appearance.
  • the manufacturing method of the inner pot 100 further includes:
  • the pot body 1 to which the handle portion 3 is welded is removed by a grinding device to remove the welding slag at the weld, and the outer surface of the pot body 1 is polished by a polishing device. It can be understood that the effect required for the specific polishing can be determined by the use requirements of the inner pot 100, and generally, it can satisfy the use requirements of the rice cooker or the electric pressure cooker.

Abstract

一种用于炊具的内锅（100）及其制造方法、炊具，内锅（100）包括：锅体（1），锅体（1）形成为锅口向内收缩的鼓型，锅体（1）的外周壁上具有沿锅体（1）的周向延伸的台阶部（2）和提手部（3），提手部（3）连接在台阶部（2）上，且提手部（3）形成为沿锅体（1）的周向水平向外延伸的环形形状。

Description

用于炊具的内锅及其制造方法、炊具 技术领域
本发明涉及家用电器领域，尤其是涉及一种用于炊具的内锅及其制造方法、炊具。
背景技术
相关技术中，电饭煲配备的内锅一般都没有提手，这给消费者在移动内锅时带来一定的不便。即使现有的部分内锅上设有提手，也是在内锅的外侧壁上设置两个对称的提手，然而，消费者在放置具有这种提手的内锅进入到电饭煲内时，需要对准一定的位置才放的进去，从而给消费者带来一定的不便，而且，一旦出现错位安放，还会造成安全隐患。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明的一个目的在于提出一种用于炊具的内锅，使用方便且不会带来安全隐患。
本发明的另一个目的在于提出一种具有上述内锅的炊具。
本发明的再一个目的在于提出一种用于炊具的内锅的制造方法。
根据本发明第一方面的用于炊具的内锅，包括：锅体，所述锅体形成为锅口向内收缩的鼓型，所述锅体的外周壁上具有沿所述锅体的周向延伸的台阶部；和提手部，所述提手部连接在所述台阶部上，且所述提手部形成为沿所述锅体的周向水平向外延伸的环形形状。
根据本发明的用于炊具的内锅，通过设置提手部，提手部代替了传统的提手，可以完全实现提手的功能，使用方便且不会带来安全隐患。而且，通过台阶部对提手部进行定位固定，保证了提手部的加工位置的准确性，提手部通过预先设计的台阶部既可以保证固定的牢固，还可以减少加工工序，降低了加工难度和成本，且不影响内锅外观。
根据本发明的其中一个示例，所述台阶部包括：水平延伸的环形平面部；和竖直延伸的环形柱面部，所述环形柱面部的下端与所述环形平面部的内端相连，其中所述提手部支撑在所述环形平面部上。
根据本发明的其中一个示例，所述提手部的内周面与所述环形柱面部过盈配合。
根据本发明的其中一个示例，所述提手部的上表面与所述环形柱面部连接以实现所述提手部与所述锅体的连接。
根据本发明的其中一个示例，所述提手部的上表面与所述环形柱面部之间圆弧过渡。
根据本发明的其中一个示例，所述锅体的内周壁的与所述台阶部相对的位置处设有向内凸出的凸起。
根据本发明的其中一个示例，所述锅体由不锈钢层和铝合金层组成的复合圆片拉伸并涨型而成，其中所述铝合金层位于所述不锈钢层的内侧。
根据本发明的其中一个示例，所述锅体的锅口处设有向外延伸的锅口翻边。
根据本发明的其中一个示例，所述提手部由带状不锈钢板弯折形成，并通过氩弧焊焊接在所述台阶部上。
根据本发明的其中一个示例，所述提手部由从所述锅体的锅口处切割下来的环形边沿材料构成，并通过氩弧焊焊接在所述台阶部上。
根据本发明的其中一个示例，所述台阶部滚压成型。
根据本发明第二方面的炊具，包括根据本发明上述第一方面的用于炊具的内锅。
根据本发明第三方面的用于炊具的内锅的制造方法，所述内锅包括锅体和提手部，所述锅体形成为锅口向内收缩的鼓型，所述锅体的外周壁上具有沿所述锅体的周向延伸的台阶部，所述提手部连接在所述台阶部上，且所述提手部形成为沿所述锅体的周向水平向外延伸的环形形状，所述制造方法包括以下步骤：S1、制作锅口向内收缩呈鼓型的锅体，并用滚压设备在所述锅体的外周壁上滚压出所述台阶部；S2、制作呈环形结构的提手部；S3、将所述提手部装配到步骤S1的所述锅体上并压紧在所述台阶部处，用氩弧焊送丝进行环焊焊接。
根据本发明的其中一个示例，所述步骤S1具体包括：S11、将由不锈钢层和铝合金层组成的复合圆片拉伸成圆柱状的待涨型锅体，其中所述铝合金层位于所述不锈钢层的内侧；S12、用金属清洗液将所述待涨型锅体清洗干净；S13、将步骤S12清洗后的待涨型锅体用涨型设备涨型成锅口向内收缩呈鼓型的待翻边锅体；S14、将所述待翻边锅体的锅口向外弯折以形成锅口翻边；S15、用滚压设备将具有锅口翻边的锅体的外周壁上滚压出所述台阶部，其中在滚压过程中锅体的内周壁上形成凸起。
根据本发明的其中一个示例，所述锅口翻边的外径为D1，所述台阶部包括水平延伸的环形平面部和竖直延伸的环形柱面部，所述环形柱面部的直径为D2且高度为H1，其中，所述D1、D2满足：D2＞D1，所述环形平面部的宽度W1在0.3mm-1.5mm之间。
根据本发明的其中一个示例，所述步骤S2具体包括：S21、将带状不锈钢板弯折成圆环状，并留有加工余量，以得到待焊接提手部；S22、将所述待焊接提手部的两端用氩弧焊焊接，并将焊接处打磨平滑，以得到待加工提手部；S23、将所述待加工提手部用数控车床加工成所需尺寸以得到所述提手部。
根据本发明的其中一个示例，所述提手部加工成尺寸根据所述台阶部加工的尺寸决定。
根据本发明的其中一个示例，所述提手部的厚度为H2且内径为D3，其中，所述D2、D3满足：D3＜D2，所述H1、H2满足：H2＜H1。
根据本发明的其中一个示例，所述步骤S3具体包括：S31、将所述提手部用油压机通过工装装配到所述锅体上，其中所述提手部的内周面和所述台阶部的所述环形柱面部过盈配合，所述提手部的下表面与所述环形平面部紧密贴合；S32、将所述锅体内装满水，所述水的液面位于所述锅体的所述凸起的上方且高度差至少为10mm；S33、将装满水的所述锅体放在焊接工装上，用所述焊接工装将所述提手部压紧在所述台阶部上并用氩弧焊送丝进行环焊焊接，焊接后所述提手部的上表面与所述环形柱面部连接并通过圆弧过渡。
根据本发明的其中一个示例，所述内锅的制造方法还包括：S4、将焊接好所述提手部 的所述锅体用打磨设备去除焊接处的焊渣，并用抛光设备将所述锅体的外表面抛光。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1为根据本发明实施例的待涨型锅体的结构示意图；
图2为根据本发明实施例的锅体的结构示意图；
图3为图2中台阶处的放大结构示意图；
图4为根据本发明实施例的提手部的结构示意图；
图5为根据本发明实施例的用于炊具的内锅的结构示意图。
附图标记：
100、内锅，1、锅体，11、铝合金层，12、不锈钢层，13、锅口翻边，2、台阶部，21、环形柱面部，22、环形平面部，23、凸起，3、提手部，31、内周面，32、上表面，33、下表面。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
需要说明的是，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。进一步地，在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
下面参考图1-图5描述根据本发明第一方面实施例的用于炊具(图未示出)的内锅100。内锅100可以应用于炊具例如电饭煲上。在本申请下面的描述中，以内锅100应用于电饭煲为例进行说明。当然，本领域的技术人员可以理解，内锅100还可以应用于电压力锅等炊具上。
如图1-图5所示，根据本发明第一方面实施例的用于炊具例如电饭煲的内锅100包括锅体1和提手部3。
锅体1形成为锅口向内收缩的鼓型。这里，需要说明的是，方向“内”可以理解为朝向锅体1中心的方向，其相反方向被定义为“外”，即远离锅体1中心的方向。具体而言，例如，如图2和图5所示，锅体1的顶部敞开以构成锅口，在从锅体1的中部分别向锅口和锅底的方向上、锅口和锅底均朝向锅体1中心的方向收缩，使得整个锅体1大体呈鼓型。
锅体1的外周壁上具有沿锅体1的周向延伸的台阶部2，台阶部2环绕锅体1的外周一圈且呈环形。提手部3连接在台阶部2上，且提手部3形成为沿锅体1的周向水平向外延伸的环形形状，例如，如图4和图5所示，在台阶部2处连接有一圈水平设置的圆环(即提手部3)。
由此，通过设置提手部3，当内锅100应用于炊具例如电饭煲时，由于提手部3为环状的一圈，因此，无论内锅100怎样放置，均不会出现传统的具有两个对称提手的内锅100由于错位安放而造成安全隐患的问题，从而提高了内锅100的安全性，且由于用户可以随意放置，从而极大地方便了用户。
根据本发明实施例的用于炊具例如电饭煲的内锅100，通过设置提手部3，提手部3代替了传统的提手，可以完全实现提手的功能，使用方便且不会带来安全隐患。而且，通过台阶部2对提手部3进行定位固定，保证了提手部3的加工位置的准确性，提手部3通过预先设计的台阶部2既可以保证固定的牢固，还可以减少加工工序，降低了加工难度和成本，且不影响内锅100外观。
根据本发明的一些具体实施例，参照图2并结合图3，台阶部2的纵截面类似L型，台阶部2包括：水平延伸的环形平面部22和竖直延伸的环形柱面部21，环形柱面部21可以为圆柱面，环形柱面部21的下端与环形平面部22的内端相连，此时环形柱面部21位于环形平面部22的内侧且向上延伸。其中提手部3支撑在环形平面部22上。由此，通过设置台阶部2，台阶部2具有明确的限位功能，提手部3可抵在台阶部2的L型夹角处，位置固定且便于后续焊接。
如图4和图5所示，提手部3水平设置且包括上表面32、下表面33、以及连接在上表面的内端和下表面33的内端之间的内周面31(当然还包括连接在上表面的外端和下表面33的外端之间的外周面)。其中，提手部3的内周面31可以与环形柱面部21过盈配合，此时提手部3的内周面31与环形柱面部21通过过盈配合贴合到一起，由此，以利于焊接，能够减少焊接可能带来的不良效果,提高成品率。提手部3的下表面33可以与环形平面部22可以紧密贴合，环形平面部22对提手部3起到支撑和限位的作用，可以较好的控制提手部3的高度，保持提手部3的尺寸稳定性。
可选地，如图5所示，提手部3的上表面32与环形柱面部21连接以实现提手部3与锅体1的连接。由此，可以减少提手部3的下表面33及提手部3的内周面31与台阶部2的焊接，而只进行提手部3的上表面32与台阶部2的环形柱面部21之间的焊接就可将提手部3牢固地固定在台阶部2处，从而减少了加工工序，降低了加工难度和成本，且不影响内锅100外观。进一步地，提手部3的上表面32与环形柱面部21之间圆弧过渡，如图5所示。
根据本发明的进一步实施例，锅体1的内周壁的与台阶部2相对的位置处设有向内凸出的凸起23。如图2和图5所示，凸起23可以为由锅体1的内周壁的一部分向内凸出且环绕锅体1内周的一圈。凸起23可以指示台阶部2相对应的在锅体1内的位置，由此，在焊接时，可以用来标定用来水冷的水在锅体1中的量。
可选地，锅体1由不锈钢层12和铝合金层11组成的复合圆片拉伸并涨型而成，其中铝合金层11位于不锈钢层12的内侧。锅体1上要焊接的部分是不锈钢层12，各处不锈钢层12的厚度优选均匀，以利于焊接。
如图1、图2和图5所示，锅体1的锅口处设有向外延伸的锅口翻边13，锅口翻边13为一圈，锅口翻边13可以由锅体1的顶部向外水平翻折形成。
台阶部2可以滚压成型，提手部3可以由带状不锈钢板弯折形成，由此，提高了材料的利用率，提手部3可以通过氩弧焊焊接在台阶部2上。当然，提手部3还可以由从锅体1的锅口处切割下来的环形边沿材料(即锅口翻边13)构成，并通过氩弧焊焊接在台阶部2上，以最大限度地利用现有的废料，达到变废为宝的目的。这里，需要说明的是，锅口翻边13优选在锅体1加工成锅口向内收缩的鼓型之前取下，例如，在制成如图1所示的圆筒状锅体时就可以将锅口翻边13割下，以在后续焊接锅口翻边13时可以使锅口翻边13顺利地穿过锅口并安装至台阶部2。
根据本发明第二方面实施例的炊具，包括根据本发明上述第一方面实施例的用于炊具的内锅100。根据本发明实施例的上述内锅100可以广泛运用在炊具领域，尤其是电热炊具，例如电饭煲、电压力锅等。
根据本发明第三方面的用于炊具的内锅100的制造方法。其中，如图1-图5所示，内锅100包括锅体1和提手部3，锅体1形成为锅口向内收缩的鼓型，锅体1的外周壁上具有沿锅体1的周向延伸的台阶部2，提手部3连接在台阶部2上，且提手部3形成为沿锅体1的周向水平向外延伸的环形形状。
其中，用于炊具的内锅100的制造方法包括以下步骤：
S1、制作锅口向内收缩呈鼓型的锅体1，并用滚压设备在锅体1的外周壁上滚压出台阶部2；
S2、制作呈环形结构的提手部3；
S3、将提手部3装配到步骤S1的锅体1上并压紧在台阶部2处，用氩弧焊送丝进行环焊焊接。
具体而言，例如，制造出呈鼓型的锅体1，再用滚压设备在该锅体1的外周壁上需要嵌套提手部3的位置滚压一圈环形的台阶部2；制造出圆环状的提手部3，并将提手部3用数控车床加工成所需尺寸；最后，将制造出的提手部3装配到具有台阶部2的锅体1上并将其压紧在台阶部2上，并用氩弧焊送丝进行环焊焊接。
这里，需要说明的是，该制造方法中，步骤S1并不一定在步骤S2之前完成，二者可以互换，也可以同时进行。但通常来说，一般是先进行步骤S1制作出锅体1及台阶部2，再进行步骤S2制作出提手部3，这是因为台阶部2的加工会有偏差，而提手部3 是比较容易加工的，当先加工出的台阶部2出现偏差时，可利用后加工的提手部3来弥补该偏差，此为比较优选的技术方案。
如图1-图3所示，步骤S1具体包括：
S11、将由不锈钢层12和铝合金层11组成的复合圆片拉伸成圆柱状(即直身)的待涨型锅体，其中铝合金层11位于不锈钢层12的内侧，如图1所示；
S12、用金属清洗液将待涨型锅体清洗干净；
S13、将步骤S12清洗后的待涨型锅体用涨型设备涨型成锅口向内收缩呈鼓型的待翻边锅体，如图2所示；
S14、将待翻边锅体的锅口向外弯折以形成锅口翻边13；例如，可以用车边设备将鼓型的待翻边锅体的锅口向外弯折形成锅口翻边13；
S15、用滚压设备将具有锅口翻边13的锅体1的外周壁上滚压出台阶部2，其中在滚压过程中锅体1的内周壁上形成凸起23，如图2和图3所示。
其中，在步骤S15中，台阶部2位于锅体1的外周壁上需要嵌套提手部3的位置，该位置可以预先设计合适的高度，对应使用时的电饭煲或电压力锅的具体结构，一般设置在锅体1中部靠上的位置，水平设置成一圈完整的环形结构。在滚压的过程中，台阶部2会在锅体1的内周壁上形成凸起23。
可选地，锅口翻边13的外径为D1，台阶部2包括水平延伸的环形平面部22和竖直延伸的环形柱面部21，环形柱面部21的直径为D2，且环形柱面部21的高度为H1，其中，D1、D2满足：D2＞D1，环形平面部22的宽度W1在0.3mm-1.5mm(包括端点值)之间。由此，通过滚压的方式在锅体1的内周壁和外周壁上分别形成台阶部2和凸起23，台阶部2的环形平面部22的宽度W1不能太小，需要满足直角状的限位要求。
如图4所示，步骤S2具体包括：
S21、将带状不锈钢板弯折成圆环状，并留有加工余量，以得到待焊接提手部；
S22、将待焊接提手部的两端用氩弧焊焊接，并将焊接处打磨平滑，以得到待加工提手部；
S23、将待加工提手部用数控车床加工成所需尺寸以得到提手部3。
其中，提手部3加工成尺寸根据台阶部2加工的尺寸决定。具体地，提手部3的厚度为H2且内径为D3，其中，D2、D3满足：D3＜D2，H1、H2满足：H2＜H1。
台阶部2的加工会有偏差，而提手部3是比较容易加工的，当台阶部2的加工出现偏差时，可利用提手部3的加工来弥补。通过使D3小于D2，实现台阶部2的环形柱面部21和提手部3过盈配合，使提手部3可以较好地配合在锅体1的台阶部2处，并使锅体1和提手部3的上表面的接触处没有缝隙，以利于焊接，能够减少焊接可能带来的不良效果，提高成品率。而H2小于H1则限定了提手部3的厚度较小，这样提手部3上部可以与台阶部2的环形柱面部21的比提手部3高出的部分焊接并形成圆弧过渡，对锅体1整体没有什么影响。
优选地，提手部3的内径D3在D2和D1之间，即提手部3可以从锅口翻边13处套 入，但在卡到台阶部2处时是过盈配合，而提手部3的宽度，也就是其内径和外径之差的一半，这相当于是提手的宽度，不能太小，需要方便用户使用，通常可以设计成1cm-3cm(包括端点值)左右。
如图5所示，步骤S3具体包括：
S31、将提手部3用油压机通过工装装配到锅体1上，其中提手部3的内周面和台阶部2的环形柱面部21过盈配合，提手部3的下表面与环形平面部22紧密贴合；
S32、将锅体1内装满水，水的液面位于锅体1的凸起23的上方且高度差至少为10mm；
S33、将装满水的锅体1放在焊接工装上，用焊接工装将提手部3压紧在台阶部2上并用氩弧焊送丝进行环焊焊接，焊接后提手部3的上表面与环形柱面部21连接并通过圆弧过渡。
因为氩弧焊焊接的温度有1000摄氏度以上，而铝合金的熔点低于700摄氏度，在焊接时可以在锅体1里装有较高水位的水，具体地，水可以直接采用自来水，这样就可以使锅体1的铝合金层11在焊接时不会熔化，解决了高温下不锈钢和不锈钢-铝合金复合件的高温焊接问题。
提手部3和锅体1的台阶部2在焊接时用工装压紧，可以大大降低因为焊接温度过高而导致的锅体11的台阶部2和提手部3产生形变而影响焊接产生的不良。具体地，提手部3和锅体1在高温下都会产生膨胀，如果不压紧，一方面焊到后期提手部3会和锅体1之间产生缝隙，当焊隙大于0.1mm，就很容易焊穿锅体1，另一方面提手部3也会在膨胀时和台阶部2的环形柱面部21产生较大缝隙，造成尺寸不稳定，并影响外观。
进一步地，内锅100的制造方法还包括：
S4、将焊接好提手部3的锅体1用打磨设备去除焊接处的焊渣，并用抛光设备将锅体1的外表面抛光。可以理解的是，具体抛光所需要达到的效果可以由该内锅100的使用要求决定，一般地，使其满足电饭煲或电压力锅的使用要求即可。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (20)

  1. 一种用于炊具的内锅，其特征在于，包括：
    锅体，所述锅体形成为锅口向内收缩的鼓型，所述锅体的外周壁上具有沿所述锅体的周向延伸的台阶部；和
    提手部，所述提手部连接在所述台阶部上，且所述提手部形成为沿所述锅体的周向水平向外延伸的环形形状。
  2. 根据权利要求1所述的用于炊具的内锅，其特征在于，所述台阶部包括：
    水平延伸的环形平面部；和
    竖直延伸的环形柱面部，所述环形柱面部的下端与所述环形平面部的内端相连，其中所述提手部支撑在所述环形平面部上。
  3. 根据权利要求2所述的用于炊具的内锅，其特征在于，所述提手部的内周面与所述环形柱面部过盈配合。
  4. 根据权利要求2所述的用于炊具的内锅，其特征在于，所述提手部的上表面与所述环形柱面部连接以实现所述提手部与所述锅体的连接。
  5. 根据权利要求4所述的用于炊具的内锅，其特征在于，所述提手部的上表面与所述环形柱面部之间圆弧过渡。
  6. 根据权利要求1-5中任一项所述的用于炊具的内锅，其特征在于，所述锅体的内周壁的与所述台阶部相对的位置处设有向内凸出的凸起。
  7. 根据权利要求1-6中任一项所述的用于炊具的内锅，其特征在于，所述锅体由不锈钢层和铝合金层组成的复合圆片拉伸并涨型而成，其中所述铝合金层位于所述不锈钢层的内侧。
  8. 根据权利要求1-7中任一项所述的用于炊具的内锅，其特征在于，所述锅体的锅口处设有向外延伸的锅口翻边。
  9. 根据权利要求1-8中任一项所述的用于炊具的内锅，其特征在于，所述提手部由带状不锈钢板弯折形成，并通过氩弧焊焊接在所述台阶部上。
  10. 根据权利要求8中任一项所述的用于炊具的内锅，其特征在于，所述提手部由从所述锅体的锅口处切割下来的环形边沿材料构成，并通过氩弧焊焊接在所述台阶部上。
  11. 根据权利要求1-10中任一项所述的用于炊具的内锅，其特征在于，所述台阶部滚压成型。
  12. 一种炊具，其特征在于，包括根据权利要求1-11中任一项所述的用于炊具的内锅。
  13. 一种用于炊具的内锅的制造方法，其特征在于，所述内锅包括锅体和提手部，所述锅体形成为锅口向内收缩的鼓型，所述锅体的外周壁上具有沿所述锅体的周向延伸的台阶部，所述提手部连接在所述台阶部上，且所述提手部形成为沿所述锅体的周向水平向外延伸的环形形状，所述制造方法包括以下步骤：
    S1、制作锅口向内收缩呈鼓型的锅体，并用滚压设备在所述锅体的外周壁上滚压出所述台阶部；
    S2、制作呈环形结构的提手部；
    S3、将所述提手部装配到步骤S1的所述锅体上并压紧在所述台阶部处，用氩弧焊送丝进行环焊焊接。
  14. 根据权利要求13所述的内锅的制造方法，其特征在于，所述步骤S1具体包括：
    S11、将由不锈钢层和铝合金层组成的复合圆片拉伸成圆柱状的待涨型锅体，其中所述铝合金层位于所述不锈钢层的内侧；
    S12、用金属清洗液将所述待涨型锅体清洗干净；
    S13、将步骤S12清洗后的待涨型锅体用涨型设备涨型成锅口向内收缩呈鼓型的待翻边锅体；
    S14、将所述待翻边锅体的锅口向外弯折以形成锅口翻边；
    S15、用滚压设备将具有锅口翻边的锅体的外周壁上滚压出所述台阶部，其中在滚压过程中锅体的内周壁上形成凸起。
  15. 根据权利要求14所述的内锅的制造方法，其特征在于，所述锅口翻边的外径为D1，所述台阶部包括水平延伸的环形平面部和竖直延伸的环形柱面部，所述环形柱面部的直径为D2且高度为H1，其中，所述D1、D2满足：D2＞D1，所述环形平面部的宽度W1在0.3mm-1.5mm之间。
  16. 根据权利要求15所述的内锅的制造方法，其特征在于，所述步骤S2具体包括：
    S21、将带状不锈钢板弯折成圆环状，并留有加工余量，以得到待焊接提手部；
    S22、将所述待焊接提手部的两端用氩弧焊焊接，并将焊接处打磨平滑，以得到待加工提手部；
    S23、将所述待加工提手部用数控车床加工成所需尺寸以得到所述提手部。
  17. 根据权利要求16所述的内锅的制造方法，其特征在于，所述提手部加工成尺寸根据所述台阶部加工的尺寸决定。
  18. 根据权利要求17所述的内锅的制造方法，其特征在于，所述提手部的厚度为H2且内径为D3，其中，所述D2、D3满足：D3＜D2，所述H1、H2满足：H2＜H1。
  19. 根据权利要求15-18中任一项所述的内锅的制造方法，其特征在于，所述步骤S3具体包括：
    S31、将所述提手部用油压机通过工装装配到所述锅体上，其中所述提手部的内周面和所述台阶部的所述环形柱面部过盈配合，所述提手部的下表面与所述环形平面部紧密贴合；
    S32、将所述锅体内装满水，所述水的液面位于所述锅体的所述凸起的上方且高度差至少为10mm；
    S33、将装满水的所述锅体放在焊接工装上，用所述焊接工装将所述提手部压紧在所述台阶部上并用氩弧焊送丝进行环焊焊接，焊接后所述提手部的上表面与所述环形柱面部连接并通过圆弧过渡。
  20. 根据权利要求13-19任一项所述的内锅的制造方法，其特征在于，还包括：
    S4、将焊接好所述提手部的所述锅体用打磨设备去除焊接处的焊渣，并用抛光设备将所述锅体的外表面抛光。
PCT/CN2016/094672 2016-03-17 2016-08-11 用于炊具的内锅及其制造方法、炊具 WO2017156971A1 (zh)

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