Lightweight wok

Abstract

The application discloses a lightweight wok comprising a bottom wall and a side wall raised around the bottom wall, the side wall having: (i) an overall shape symmetrical about a longitudinal axis, (ii) and a diameter perpendicular to the longitudinal axis; the maximum diameter of the side wall is D1, pan openings which are symmetrically arranged relative to the longitudinal axis are defined at the top of the side wall, the vertical distance between the pan openings and the bottom wall along the longitudinal axis is the depth H1 of the frying pan, and D1: H1 is equal to 2.0-5.0; moreover, the side wall is formed by spinning a material around the bottom wall after the range of the bottom wall is determined on a plate, and at least part of the side wall is configured to be a stress reduction area in which the internal stress formed in the side wall in the spinning process is reduced through turning and cutting machining. The minimum thickness of the stress decreasing area is 20%-60% of the thickness of the bottom wall; compared with the prior art, the side wall is thinned to facilitate release of internal stress, heat is generated in the turning process, and therefore the internal stress of the side wall is reduced.

Description

Technical Field

[0001] The present application relates to the field of cooking utensils, and in particular to a lightweight frying pan. Background Art

[0002] In modern kitchens, cooking utensils are constantly evolving in design and manufacturing, aiming to meet people's diverse needs for cooking efficiency, health, aesthetics, and convenience. As an indispensable kitchen tool, the design and functionality of a wok are particularly important. A traditional wok typically consists of a base surrounded by raised side walls, forming a cooking cavity for food. The top of the base forms the cooking surface, while the bottom provides a heating surface for heating on a cooking stove.

[0003] However, traditional woks often present several manufacturing challenges. For one thing, due to manufacturing limitations, the bottom and side walls are often thick, resulting in a heavy wok overall. This not only makes it difficult to operate but also increases material consumption and manufacturing costs. Furthermore, to reduce weight, some woks use thinner materials, but this can cause uneven heating or external forces during use, leading to deformation or even cracking, affecting cooking results and service life.

[0004] Especially when a wok is manufactured through stamping or other methods, it is difficult to precisely control the thickness of the bottom and side walls, often resulting in material waste and excessive weight. While existing spinning technology can address this issue to a certain extent by spinning sheet material to form the wok's side walls, the spinning process generates internal stresses that can cause deformation or cracking during use, potentially leading to safety hazards.

[0005] In view of this, it is necessary to propose a new technical solution to overcome the shortcomings of the existing technology. Utility Model Content

[0006] In order to solve the above problems, the present application provides a lightweight frying pan that can eliminate the internal stress in the side wall.

[0007] The present application provides a lightweight wok, comprising a bottom wall and a side wall raised around the bottom wall, the side wall having: (i) an overall shape symmetrical about a longitudinal axis, (ii) and a diameter perpendicular to the longitudinal axis;

[0008] The maximum diameter of the side wall is D1, and a pot mouth is defined at the top of the side wall and is arranged symmetrically about the longitudinal axis. The vertical distance between the pot mouth and the bottom wall along the longitudinal axis is the wok depth H1, and D1:H1=2.0-5.0;

[0009] Further, the side wall is formed by spinning a material around a base wall defined on a plate, at least a portion of the side wall is configured as a stress-reduced area via a turning material processing such that internal stress formed in the side wall during the spinning process is reduced, and a minimum thickness of the stress-reduced area is 20% to 60% of a thickness of the base wall.

[0010] The following also provides several optional modes, but not as an additional limitation to the above general scheme, just a further supplement or preferred, without technical or logical contradiction, each optional mode can be combined alone for the above general scheme, but also can be combined between multiple optional modes.

[0011] Optionally, the minimum thickness of the stress-reduced area is 25% to 55% of the thickness of the base wall.

[0012] Optionally, D1: H1 = 3.0-4.0;

[0013] The minimum thickness of the stress-reduced area is 35% to 45% of the thickness of the base wall.

[0014] Optionally, the thickness of the base wall is 1mm-3mm, and the minimum thickness of the stress-reduced area is 0.5mm-1.5mm;

[0015] The maximum diameter of the side wall is 260mm-360mm, and the wok depth is 80mm-110mm.

[0016] Optionally, the thickness of the base wall is 1.5mm-2.5mm, and the minimum thickness of the stress-reduced area is 0.6mm-1mm.

[0017] Optionally, the thickness of the base wall is 2mm, and the minimum thickness of the stress-reduced area is 0.8mm.

[0018] Optionally, the weight of the wok is not greater than 1.2kg or 1.1kg.

[0019] Optionally, the weight of the wok is 1kg.

[0020] Optionally, the side wall has a concentrator ring configured to be able to prevent the flame from floating upward, so as to improve the heating efficiency.

[0021] Optionally, the concentrator ring is convex to the side wall.

[0022] Optionally, the number of the concentrator rings is multiple, the multiple concentrator rings are arranged at intervals along the longitudinal axis, and are adjacent to the base wall.

[0023] The light weight frying pan, the side wall of the frying pan is formed by spinning the plate material to form the side wall, and then the outer side of the side wall is turned to reduce the material processing, which can accurately control the wall thickness of the side wall, so as to realize the optimized utilization of the material by optimizing the wall thickness of the side wall, thereby saving the material of the frying pan and reducing the weight of the frying pan;

[0024] Importantly, the side wall after thinning by turning is beneficial in the process of releasing internal stress by aging method in the later stage, and the thinner side wall is more beneficial to the rapid release of internal stress, and the side wall is beneficial to acid thick film oxidation and ordinary nitriding oxidation surface treatment after stress release. And in the turning process, the cutter acts on the side wall, and heat is generated in the turning process, so that the deformed unit cell in the spinning stretching process is refined, the internal stress of the side wall is reduced, the small cracks on the side wall are eliminated, the structural strength of the frying pan is improved, and the appearance of the frying pan is also enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 An embodiment of the present application provides a structure schematic view of a frying pan;

[0026] Figure 2 For Figure 1 structure schematic view of another view of the frying pan in the embodiment;

[0027] Figure 3 For Figure 1 structure schematic view of A part in the embodiment;

[0028] Figure 4 structure schematic view of another embodiment of the frying pan in the present application;

[0029] Figure 5 For Figure 4 structure schematic view of another view of the frying pan in the embodiment;

[0030] Figure 6 For Figure 1 structure schematic view of B part in the embodiment.

[0031] The reference signs in the drawings are explained as follows:

[0032] 100, frying pan; 101, longitudinal axis; 102, cooking cavity;

[0033] 10, bottom wall;

[0034] 20, side wall; 21, pot opening; 22, energy gathering ring; 23, stress reduction area;

[0035] 30, rim; 31, transition section. DETAILED DESCRIPTION

[0036] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application.

[0037] It should be noted that when a component is referred to as being "connected" with another component, it can be directly connected with the other component or there can be intervening components. When a component is referred to as being "disposed on" another component, it can be directly disposed on the other component or there can be intervening components.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the terms "and / or" includes any and all combinations of one or more of the associated listed items.

[0039] As shown in Figures 1 to 6 The present application provides a lightweight frying pan 100, including a bottom wall 10 and a side wall 20 raised around the bottom wall 10, the side wall 20 having: (i) an overall shape symmetrical about a longitudinal axis 101, (ii) and a diameter perpendicular to the longitudinal axis 101; the maximum diameter of the side wall 20 is D1, and the top of the side wall 20 defines a pan opening 21 arranged symmetrically about the longitudinal axis 101, the vertical distance between the pan opening 21 and the bottom wall 10 along the longitudinal axis 101 is the depth H1 of the frying pan 100, and satisfies D1:H1=2.0-5.0; and the side wall 20 is formed by spinning the material around the bottom wall 10 after determining the range of the bottom wall 10 on a sheet material, at least part of the side wall 20 is configured to be a stress reduction area 23 processed by turning down the material so that the internal stress formed in the side wall 20 during the spinning process is reduced, the minimum thickness of the stress reduction area 23 is 20%-60% of the thickness of the bottom wall 10.

[0040] The side wall 20 of the frying pan 100 is formed by spinning the sheet material to form the side wall 20, and then turning down the material on the outside of the side wall 20, which can accurately control the wall thickness of the side wall 20, so that the wall thickness of the side wall 20 can be optimized to achieve optimal use of materials, thereby saving the material of the frying pan 100 to reduce the weight of the frying pan 100.

[0041] Importantly, the thinned side wall 20 is beneficial in the process of releasing internal stress by aging method in the later stage, and the thinner side wall 20 is more beneficial to the rapid release of internal stress; the side wall 20 is beneficial to the acid thick film oxidation and ordinary nitriding oxidation surface treatment after the stress is released. Moreover, in the turning process, the cutter acts on the side wall 20, and heat is generated in the turning process, so that the deformed crystal cells in the spinning stretching process are refined, the internal stress of the side wall 20 is reduced, the tiny cracks on the side wall 20 are eliminated, the structural strength of the wok 100 is improved, and the appearance of the wok 100 is also enhanced.

[0042] In the spinning of the plate, the plate needs to be placed on the mold, and then the middle part of the plate is pressed against the side away from the mold to fix the plate on the mold, and the middle part is the bottom wall 10 of the wok 100; the roller or roller head applies pressure to the material on the outside of the middle part of the plate, so that the plate deforms and finally fits the mold to form the side wall 20; and finally, at least part of the outside of the side wall 20 is turned to reduce the material, so that the wok 100 can be processed. The plate can be a cold-rolled steel plate or other ferrous material; the turning reduction processing is finish turning. Turning is a mechanical processing method that changes the shape and size of the material surface by cutting; in this process, turning can change the stress state of the material surface, thereby reducing or eliminating internal stress.

[0043] In this embodiment, as shown in Figures 1 to 6 The weight of the wok 100 is not greater than 1.2 kg or 1.1 kg; when the weight of the wok 100 is large, the effect of lightening the wok 100 cannot be achieved. For example, the weight of the wok 100 is 1 kg. By controlling the turning reduction processing, the weight of the wok 100 can be accurately controlled, so that the effect of lightening the wok 100 can be achieved.

[0044] In this embodiment, as shown in Figures 1 to 6 D1:H1=3.0-4.0; the diameter and height of the side wall 20 determine the capacity and depth of the wok 100, which in turn affects the uniformity of cooking food and the convenience of stir-frying; within this range, the wok 100 can conveniently stir-fry food. Preferably, D1:H1=3.2-3.4.

[0045] Specifically, the maximum diameter of the side wall 20 is 260mm-360mm, and the depth of the wok 100 is 80mm-110mm, so as to meet the requirements of cooking food. Preferably, the maximum diameter of the side wall 20 is 270mm-350mm, and the depth of the wok 100 is 85mm-105mm. For example, the depth of the wok 100 is 90mm, 95mm or 100mm, and the maximum diameter of the side wall 20 is 280mm, 300mm, 320mm or 340mm.

[0046] In the embodiment, as shown in the figure, Figures 1 to 6 The wok 100 is symmetrical in size in each direction along the longitudinal axis 101, so that the wok 100 is more beautiful in appearance, and also ensures that the wok 100 can be uniformly heated during heating, improving the cooking effect. Among them, the depth of the wok 100 is the depth of the cooking cavity 102; the pot opening 21 is in communication with the cooking cavity 102.

[0047] In the embodiment, as shown in the figure, Figures 1 to 6 The bottom wall 10 can be a planar structure or a curved surface structure; the specific setting of the bottom wall 10 can be set according to actual needs, which will not be further elaborated here. For example, in the embodiment, the bottom wall 10 is a planar structure; the diameter of the bottom wall 10 is 100mm-160mm, and the thickness of the bottom wall 10 is 1mm-3mm. Preferably, the diameter of the bottom wall 10 is 120mm-140mm, and the thickness of the bottom wall 1010 is 1.5mm-2.5mm. For example, the diameter of the bottom wall 10 is 130mm, and the thickness of the bottom wall 10 is 2mm.

[0048] In the embodiment, as shown in the figure, Figures 1 to 6 The side wall 20 is substantially in a cylindrical structure; the wall thickness of the side wall 20 decreases from the bottom wall 10 to the pot opening 21. The cross section of the side wall 20 along the longitudinal axis 101 of the wok 100 is formed by a continuous curved segment. The cross section of the side wall 20 along the longitudinal axis 101 of the wok 100 includes multiple circular arc segments.

[0049] In the embodiment, as shown in the figure, Figures 1 to 6 The minimum thickness of the stress reduction area 23 is 25%-55% of the thickness of the bottom wall 10; if the thickness of the thinnest part of the stress reduction area 23 is too small, it will affect the firmness of the side wall 20; if the thickness of the thinnest part of the stress reduction area 23 is too thick, it will affect the lightweight of the cooking tool. Preferably, the minimum thickness of the stress reduction area 23 is 30%-50% of the thickness of the bottom wall 10. Further preferably, the minimum thickness of the stress reduction area 23 is 35%-45% of the thickness of the bottom wall 10,

[0050] Specifically, the minimum thickness of the stress reduction area 23 is 0.5mm-1.5mm. Preferably, the minimum thickness of the stress reduction area 23 is 0.6mm-1mm. For example, the minimum thickness of the stress reduction area 23 is 0.8mm.

[0051] In the embodiment, as shown in the figure, Figures 1 to 6As shown, the sidewall 20 has a concentrator ring 22 configured to prevent the flame from floating upward to improve heating efficiency; in addition, the concentrator ring 22 can also prevent the wok 100 from sliding relative to the heating stove when the wok 100 is placed on the heating stove. The concentrator ring 22 is machined simultaneously when the sidewall 20 is turned down. The concentrator ring 22 is convex to the sidewall 20. The number of the concentrator ring 22 is multiple, and the multiple concentrator rings 22 are arranged along the longitudinal axis and adjacent to the bottom wall 10. Along the longitudinal axis, a groove is formed between two adjacent concentrator rings 22. The number of the concentrator ring 22 is one, two, three or more.

[0052] In the present embodiment, as shown, Figures 1 to 6 The top of the sidewall 20 is provided with a rim 30, and the thickness of the rim 30 is substantially the same as the thickness of the bottom wall 10. The rim 30 is located on the side of the sidewall 20 away from the bottom wall 10. The rim 30 can enhance the structural stability of the wok 100, help reduce stress concentration, and improve the durability of the wok 100. The rim 30 is folded outward. The rim 30 and the sidewall 20 are connected by a transition section 31. The thickness of the transition section 31 gradually decreases from the rim 30 to the sidewall 20 to provide a smooth transition between the rim 30 and the sidewall 20 and reduce stress concentration.

[0053] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure. When the technical features in different embodiments are embodied in the same figure, it is considered that the figure also discloses the combination of the embodiments involved.

[0054] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be noted that for those skilled in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are within the scope of the present application.

Claims

1. A lightweight wok comprising a bottom wall and a side wall rising around the bottom wall, the side wall having: (i) an overall shape symmetrical about a longitudinal axis, and (ii) a diameter perpendicular to the longitudinal axis; characterized in that: The maximum diameter of the side wall is D1, and a pot mouth is defined at the top of the side wall and is arranged symmetrically about the longitudinal axis. The vertical distance between the pot mouth and the bottom wall along the longitudinal axis is the wok depth H1, and D1:H1=2.0-5.0; Furthermore, the side wall is formed by spinning the material around the bottom wall after the range of the bottom wall is determined on a plate. At least a portion of the side wall is configured as a stress reduction area through turning to reduce the internal stress formed in the side wall during the spinning process. The minimum thickness of the stress reduction area is 20% to 60% of the thickness of the bottom wall.

2. A lightweight frying pan according to claim 1, characterized in that: The minimum thickness of the stress reduction area is 25% to 55% of the thickness of the bottom wall.

3. A lightweight frying pan according to claim 2, characterized in that: D1: H1 = 3.0-4.0; The minimum thickness of the stress reduction area is 35% to 45% of the thickness of the bottom wall.

4. A lightweight frying pan according to claim 1, 2 or 3, characterized in that: The thickness of the bottom wall is 1 mm to 3 mm, and the minimum thickness of the stress reduction area is 0.5 mm to 1.5 mm; The maximum diameter of the side wall is 260mm-360mm, and the depth of the frying pan is 80mm-110mm.

5. A lightweight frying pan according to claim 4, characterized in that: The thickness of the bottom wall is 1.5 mm to 2.5 mm, and the minimum thickness of the stress reduction area is 0.6 mm to 1 mm.

6. A lightweight frying pan according to claim 5, characterized in that: The thickness of the bottom wall is 2 mm, and the minimum thickness of the stress reduction area is 0.8 mm.

7. A lightweight frying pan according to claim 1, characterized in that: The weight of the frying pan is no more than 1.2 kg or 1.1 kg.

8. A lightweight frying pan according to claim 1, characterized in that: The side wall has an energy focusing ring, which is configured to prevent the flame from escaping upwards, so as to improve the heating efficiency.

9. A lightweight frying pan according to claim 8, characterized in that: The energy focusing ring protrudes outward from the side wall.

10. A lightweight frying pan according to claim 8 or 9, characterized in that: There are multiple energy focusing rings, which are spaced apart along the longitudinal axis and adjacent to the bottom wall.

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