CN220308931U

CN220308931U - Cooking utensil

Info

Publication number: CN220308931U
Application number: CN202321685742.3U
Authority: CN
Inventors: 蔡才德; 李松成; 张刘帅
Original assignee: Wuhan Supor Cookware Co Ltd
Current assignee: Wuhan Supor Cookware Co Ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2024-01-09
Anticipated expiration: 2033-06-28

Abstract

The utility model provides a cooking appliance. The cooking appliance includes a multi-layered composite structure comprising: a substrate layer comprising an inner surface and an outer surface and having pores; a sealing layer located on the inner surface of the substrate layer or on both the inner and outer surfaces of the substrate layer and filling the pores of the substrate layer; and a functional layer on the sealing layer on the inner surface of the substrate layer. The cooking appliance can prevent deterioration of a base material layer, prevent food taste from being affected, protect the base material layer from external impact and/or prevent the base material layer from falling powder.

Description

Cooking utensil

Technical Field

The present utility model relates to the field of cooking appliances, and more particularly, to a cooking appliance including a sealing layer.

Background

Bamboo/charcoal or graphite has been increasingly used in the field of cooking appliances because of various excellent properties (e.g., excellent heat conductivity, excellent extreme cold and hot impact resistance, etc.). The cooking utensil using bamboo/charcoal or graphite as main material can be used for heating electric appliances such as electromagnetic ovens and electric stoves, and also can be used for heating by open fire. In addition, the bamboo/charcoal or graphite can generate continuous far infrared rays when heated, and the far infrared rays have the effect of improving the pH value of the cooked food.

However, the surface of the conventional bamboo/charcoal or graphite article generally has fine pores, which may cause foreign substances such as grease, acid and alkali to remain in the pores of the bamboo/charcoal or graphite substrate, resulting in problems of deterioration of the performance of the bamboo/charcoal or graphite substrate, and influence of the taste of food, etc. In addition, conventional bamboo/charcoal or graphite products have a phenomenon of powder falling, which seriously affects the consumer's use experience of cooking appliances using bamboo/charcoal or graphite as a main material.

The above information disclosed in this background section is only for enhancement of understanding of the background of the utility model and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.

Disclosure of Invention

The present utility model aims to provide a cooking appliance which prevents degradation of a base material layer, prevents food taste from being affected, protects the base material layer from external impact, and/or prevents the base material layer from falling powder.

The cooking appliance of the present utility model comprises a multi-layered composite structure comprising: a substrate layer comprising an inner surface and an outer surface and having pores; a sealing layer located on the inner surface of the substrate layer or on both the inner and outer surfaces of the substrate layer and filling the pores of the substrate layer; and a functional layer on the sealing layer on the inner surface of the substrate layer.

The substrate layer may include any one of bamboo charcoal, and graphite.

The sealing layer may be formed of a liquid resin through an impregnation curing process.

The thickness of the sealing layer may be in the range of 0.2mm to 15 mm.

The functional layer may include a transition layer on the sealing layer.

The transition layer may be a metal layer.

The functional layer may also include a ceramic layer on the transition layer.

The ceramic layer may include a ceramic primer layer on the transition layer and a ceramic topcoat layer on the ceramic primer layer.

The functional layer may also include a non-stick layer on the transition layer.

The non-stick layer may include a non-stick base layer on the transition layer and a non-stick face layer on the non-stick base layer.

The cooking utensil comprises the sealing layer arranged on the surface of the substrate layer, wherein the sealing layer can fill the pores in the substrate layer and seal the substrate layer, so that the problems of degradation of the substrate layer or influence on the taste of food and the like caused by penetration of foreign matters such as grease, acid and alkali into the pores of the substrate layer are avoided. In addition, the sealing layer can also protect the substrate layer from external impact or the like and prevent the substrate layer from powder falling phenomenon.

Drawings

The above and other aspects and features of exemplary embodiments of the present utility model will become more apparent from the following description when taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic view schematically showing a multi-layered composite structure of a cooking appliance according to an embodiment of the present utility model.

Fig. 2 is an enlarged schematic view schematically showing a substrate layer according to an embodiment of the present utility model.

Fig. 3 is a schematic diagram schematically illustrating the substrate layer and sealing layer of the embodiment of fig. 1 according to the present utility model.

Fig. 4 is a schematic diagram schematically illustrating a multi-layer composite structure according to an embodiment of the present utility model.

Fig. 5 is a schematic diagram schematically illustrating a multi-layer composite structure according to another embodiment of the present utility model.

Fig. 6 is a schematic diagram schematically illustrating a multi-layer composite structure according to another embodiment of the present utility model.

Fig. 7 is a schematic diagram schematically illustrating the substrate layer and sealing layer of the embodiment of fig. 6 according to the present utility model.

Reference numerals illustrate: 100-a substrate layer; 110-pore; 200-sealing layers; 300-functional layer; 310-a transition layer; 320-a ceramic layer; 321-a ceramic bottom layer; 322-ceramic facing; 320' -non-stick layer; 321' -non-stick substrate; 322' -non-stick finish.

Detailed Description

The exemplary embodiments according to the present utility model will be described in detail below to explain the present utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

The dimensions of the elements and portions may be exaggerated in the figures for convenience of illustration. In other words, since the dimensions of elements and portions in the drawings are arbitrarily shown for convenience of explanation, the following embodiments are not limited thereto.

The utility model provides a cooking appliance. The cooking appliance may be various types of cookware (e.g., wok, stew pot, frying pan, soup pot, steamer, pressure cooker, etc.), bakeware, electric cooker liner, electric pressure cooker liner, etc., but is not limited thereto. The cooking utensil can be used for open fire heating, electric stove and electroceramic stove heating, electromagnetic stove and electromagnetic stove heating, or microwave oven heating, but is not limited to the above.

Fig. 1 is a schematic view schematically showing a multi-layered composite structure of a cooking appliance according to an embodiment of the present utility model. Fig. 2 is an enlarged schematic view schematically showing a substrate layer according to an embodiment of the present utility model. Fig. 3 is a schematic diagram schematically illustrating the substrate layer and sealing layer of the embodiment of fig. 1 according to the present utility model.

As shown in fig. 1, the cooking appliance includes a multi-layered composite structure including a substrate layer 100, a sealing layer 200, and a functional layer 300. The substrate layer 100 includes an inner surface and an outer surface. As shown in fig. 1, sealing layer 200 may be located on an inner surface (shown as an upper surface in fig. 1) of substrate layer 100. In other embodiments, unlike that shown in fig. 1, sealing layer 200 may be located on both the inner and outer (e.g., lower) surfaces of substrate layer 100. The functional layer 300 may be located on the sealing layer 200 on the inner surface of the substrate layer 100.

In the present utility model, "the cooking appliance includes a multi-layered composite structure" may mean that the entire or most of the cooking appliance has the multi-layered composite structure. For example, the entire body portion of the cookware may have a multi-layered composite structure, or the entirety of the bakeware, the inner liner, etc. may have a multi-layered composite structure. "the cooking appliance includes a multi-layered composite structure" may also mean that only a portion of the cooking appliance has a multi-layered composite structure. For example, the bottom of the pan may have a multi-layer composite structure, while the walls of the pan may not have a multi-layer composite structure.

The base material layer 100 may include at least one of bamboo charcoal, and graphite. The base material layer 100 may include any one of bamboo charcoal, and graphite. For example, the substrate layer 100 may include (e.g., be made primarily of) bamboo charcoal. Alternatively, the substrate layer 100 may include (e.g., be made primarily of) charcoal. Alternatively, the substrate layer 100 may comprise graphite (e.g., made primarily of graphite). In addition, the substrate layer 100 may further include additives and/or processing aids such as an adhesive, ceramic powder, etc., in which case the bamboo charcoal, or graphite and the additives and/or processing aids are formed in a certain ratio through a predetermined process to form the substrate layer 100. The utility model has no specific limitation on the proportion of bamboo charcoal, charcoal or graphite and additives and/or processing aids, the placement sequence in the manufacturing process, the placement time and other technological parameters. For example, bamboo charcoal, charcoal or graphite, as well as additives and/or processing aids, may be pressed and sintered to the substrate layer 100 under high temperature and high pressure conditions, for example, at a sintering temperature of not less than 500 ℃.

In an embodiment, when the whole or a majority of the cooking appliance has a multi-layered composite structure, the substrate layer 100 may be the entire base of the cooking appliance. For example, the substrate layer 100 may be included in a bottom portion and a sidewall portion of the cooking appliance. In an embodiment, when only a portion of the cooking appliance has a multi-layered composite structure, the substrate layer 100 may be a portion of a base of the cooking appliance. For example, the substrate layer 100 may be included only in the bottom portion of the cooking appliance. In embodiments in which the substrate layer 100 is included only in the bottom portion of the cooking appliance, the sidewall portion of the cooking appliance may be formed of a matrix of other materials such as a metal or alloy.

The bamboo charcoal, charcoal or graphite in the base material layer 100 can emit far infrared waves having a wavelength of about 7 to 14 μm when heated. The far infrared wave resonates with water molecules in the food, so that the food is heated more uniformly, and the fragrance of the food can be excited.

The thickness of the substrate layer 100 may be in the range of 0.5mm to 15 mm. More specifically, the thickness of the base material layer 100 may be in the range of 0.8mm to 12mm, 1mm to 10mm, 2mm to 9mm, 3mm to 8mm, 4mm to 7mm, or any sub-range between 0.5mm and 15 mm.

As shown in fig. 2, the substrate layer 100 may have apertures 110. Since bamboo charcoal, and graphite naturally have porous properties, the base material layer 100 including bamboo charcoal, or graphite has many minute pores 110 on the surface thereof.

It should be understood that the aperture 110 in fig. 2 is shown for ease of illustration. The shape and size of the aperture 110 is not limited to that shown in fig. 2. The aperture 110 may have any shape, and the length and width (e.g., diameter) of the aperture 110 are not particularly limited. For example, the length or width of the aperture 110 may be approximately in the range of 1nm to 1 mm. More specifically, the length or width of the aperture 110 may be generally in the range of 10nm to 900 μm, 30nm to 800 μm, 100nm to 700 μm, 200nm to 600 μm, 400nm to 500 μm, 600nm to 400 μm, 1 μm to 300 μm, or 10 μm to 200 μm.

The location of the aperture 110 is also not limited to that shown in fig. 2. For example, the pores 110 may extend through the substrate layer 100, or may be present only in a surface portion of the substrate layer 100. For example, some of the pores 110 may be present only at the inner surface of the substrate layer 100, other of the pores 110 may be present only at the outer surface of the substrate layer 100, and still other of the pores 110 may extend from the inner surface of the substrate layer 100 to the outer surface of the substrate layer 100. The pores 110 may also have a branch structure like dendrites, and may also be connected to each other to have a net-like structure. In fig. 2, only the aperture 110 is shown for ease of illustration and description.

In addition, the density of the pores 110 is not limited to that shown in fig. 2. That is, the number of pores 110 in a unit volume of the substrate layer 100 is not limited to that shown in fig. 2.

Since the base material layer 100 may have a large number of pores 110, foreign substances such as grease, acid and alkali may infiltrate into the pores 110 of the base material layer 100 during use of the cooking appliance. This may lead to deterioration of the performance of the substrate layer 100 on the one hand and may affect the taste of the food on the other hand.

In order to solve this problem, the present utility model provides a sealing layer 200 on the surface of the substrate layer 100. In an embodiment, sealing layer 200 may be located on the inner surface (shown as the upper surface in fig. 1) of substrate layer 100, or may be located on both the inner and outer surfaces of substrate layer 100.

The sealing layer 200 may be formed on the surface of the substrate layer 100 by an immersion curing process from a liquid resin (e.g., a silicone resin such as polymethylsiloxane, polymethylphenylsiloxane, a fluororesin such as polytetrafluoroethylene). For example, the dip curing process may be at 1X 10 ^-1 Pa to 1X 10 ^-6 High vacuum pressure of Pa, temperature in the range of 25 ℃ to 1000 ℃.

As shown in fig. 3, the sealing layer 200 may fill the pores 110 of the substrate layer 100. For example, in embodiments in which the sealing layer 200 is located on an inner surface of the substrate layer 100, the sealing layer 200 may fill the pores 110 on the inner surface of the substrate layer 100, and may also fill the pores 110 extending outward (even to the outer surface) from the inner surface of the substrate layer 100. In such an embodiment, although the pores 110 on the outer surface of the substrate layer 100 may not be completely filled with the sealing layer 200, since the outer surface of the substrate layer 100 is not generally contacted with the cooked food, there is generally no problem in that foreign substances such as grease, acid-base, and the like may infiltrate into the pores 110 of the substrate layer 100.

By forming the sealing layer 200 capable of filling the pores 110 of the substrate layer 100 on the surface of the substrate layer 100, it is possible to prevent foreign substances such as grease, acid and alkali from penetrating into the pores 110 of the substrate layer 100, thereby avoiding deterioration of the performance of the substrate layer 100 and avoiding influence on the taste of food due to the foreign substances such as grease, acid and alkali stored in the pores 110. In addition, the sealing layer 200 can also protect the substrate layer 100 from external impact or the like and prevent the substrate layer 100 including bamboo charcoal, or graphite from falling powder.

The thickness of the sealing layer 200 may be in the range of 0.2mm to 15 mm. The thickness of the sealing layer 200 may refer to a thickness extending from a surface (e.g., an inner surface) of the substrate layer 100 where the sealing layer 200 is disposed toward a direction away from the substrate layer 100. More specifically, the thickness of the sealing layer 200 may be in the range of 0.3mm to 14mm, 0.4mm to 13mm, 0.5mm to 12mm, 0.6mm to 11mm, 0.7mm to 10mm, 0.8mm to 9mm, 0.9mm to 8mm, 1.0mm to 7mm, 1.5mm to 6mm, 2.0mm to 5mm, 2.5mm to 4mm, or any sub-range between 0.2mm to 15 mm. In an embodiment, the thickness of the sealing layer 200 may be substantially the same as the thickness of the substrate layer 100. If the thickness of the sealing layer 200 is less than 0.2mm, the above-described performance of the sealing layer 200 may be insufficient. If the thickness of the sealing layer 200 is greater than 15mm, the sealing layer 200 may be too thick, resulting in reduced thermal conductivity.

Referring back to fig. 1, the functional layer 300 is located on the sealing layer 200 on the inner surface of the substrate layer 100. The functional layer 300 may be a coating layer that imparts abrasion-resistant, non-stick, etc. properties to the cooking appliance. Since the functional layer 300 is a coating layer imparting abrasion resistance, non-stick property, etc. to the cooking appliance, the functional layer 300 may be formed only on the sealing layer 200 on the inner surface of the substrate layer 100. That is, the functional layer 300 may be formed only at the inner side of the cooking appliance.

Referring to fig. 4, the functional layer 300 may include a transition layer 310 on the sealing layer 200 and a ceramic layer 320 on the transition layer 310.

The transition layer 310 may be a metal layer. For example, the transition layer 310 may be a titanium layer. The titanium layer may be formed on the sealing layer 200 by a process of meltallizing, plasma, chemical Vapor Deposition (CVD), physical Vapor Deposition (PVD), or the like, that is, on a surface of the sealing layer 200 opposite to a surface contacting the substrate layer 100.

The thickness of the transition layer 310 may be in the range of 0.1 μm to 1 mm. More specifically, the thickness of the transition layer 310 may be in the range of 0.5 μm to 900 μm, 5 μm to 800 μm, 20 μm to 700 μm, 50 μm to 600 μm, 100 μm to 500 μm, 200 μm to 400 μm.

Ceramic layer 320 may include a ceramic underlayer 321 on transition layer 310 and a ceramic topcoat 322 on ceramic underlayer 321 to improve the wear resistance of the cooking appliance. The ceramic primer layer 321 and the ceramic topcoat layer 322 may be made of polymethylsiloxane, polymethylphenylsiloxane, or the like. For example, the ceramic underlayer 321 and ceramic topcoat 322 may be formed by subjecting polymethylsiloxane, polymethylphenylsiloxane, or the like to a molding process including a curing (e.g., sintering at 300 ℃ or more) process. The ceramic underlayer 321 and the ceramic topcoat 322 may be sequentially formed by the same or different processes.

The thickness of each of the ceramic underlayer 321 and the ceramic topcoat 322 may be in the range of 0.1 μm to 1 mm. More specifically, the thickness of each of the ceramic underlayer 321 and the ceramic topcoat 322 may be in the range of 0.5 μm to 900 μm, 5 μm to 800 μm, 20 μm to 700 μm, 50 μm to 600 μm, 100 μm to 500 μm, 200 μm to 400 μm.

Referring to fig. 5, the functional layer 300 may include a transition layer 310 on the sealing layer 200 and a non-adhesive layer 320' on the transition layer 310.

The transition layer 310 may be the same as the transition layer 310 shown in fig. 4, and a description thereof will not be repeated here.

The non-stick layer 320 'may include a non-stick base layer 321' on the transition layer 310 and a non-stick face layer 322 'on the non-stick base layer 321'. Non-stick base layer 321 'and non-stick face layer 322' may comprise a non-stick material such as a fluororesin (such as polytetrafluoroethylene) or an amorphous alloy.

The thickness of each of the non-stick bottom layer 321 'and the non-stick top layer 322' may be in the range of 0.1 μm to 1 mm. More specifically, the thickness of each of the non-stick bottom layer 321 'and the non-stick top layer 322' may be in the range of 0.5 μm to 900 μm, in the range of 5 μm to 800 μm, in the range of 20 μm to 700 μm, in the range of 50 μm to 600 μm, in the range of 100 μm to 500 μm, and in the range of 200 μm to 400 μm.

Unlike the multilayer composite structure shown in fig. 1, in the multilayer composite structure shown in fig. 6, the sealing layer 200 may be located on both the inner surface (shown as the upper surface in fig. 6) and the outer surface (shown as the lower surface in fig. 6) of the substrate layer 100. In such an embodiment, since both the inner and outer surfaces of the substrate layer 100 are provided with the sealing layer 200, better protection and sealing of the substrate layer 100 may be achieved.

As shown in fig. 7, since the sealing layer 200 may be located on both the inner and outer surfaces of the substrate layer 100, the pores 110 on the outer surface of the substrate layer 100 may also be filled with the sealing layer 200. In such an embodiment, infiltration of water, cleaning agents, oil stains, etc. into the pores 110 on the outer surface of the substrate layer 100 when cleaning the cooking appliance may be further prevented, thereby achieving better protection and sealing of the substrate layer 100. Further, the sealing layer 200 on the outer surface of the base material layer 100 can protect the base material layer 100 from impact or the like from the outside and prevent the phenomenon that the outer surface of the base material layer 100 including bamboo charcoal, or graphite falls off powder.

On the sealing layer 200 located on the outer surface of the substrate layer 100, a functional layer 300 may also be provided, such as the functional layer 300 described with reference to fig. 4 or 5.

The cooking appliance of the present utility model includes a base material layer mainly comprising bamboo charcoal, charcoal or graphite, and a sealing layer disposed on a surface of the base material layer. The sealing layer can fill the pores of bamboo charcoal, charcoal or graphite in the substrate layer, and prevent foreign matters such as grease, acid and alkali from penetrating into the pores of the substrate layer, so that the performance degradation of the substrate layer is avoided, and the influence of the foreign matters such as grease, acid and alkali stored in the pores on the taste of food is avoided. In addition, the sealing layer can also protect the substrate layer from external impact or the like and prevent the phenomenon that the substrate layer including bamboo charcoal, or graphite is dusted.

The foregoing description is only of the preferred embodiments of the utility model and is not intended to limit the scope of the utility model. Modifications and equivalent substitutions are intended to be included in the scope of the claims without departing from the spirit and scope of the present utility model.

Claims

1. A cooking appliance, the cooking appliance comprising a multi-layer composite structure comprising:

a substrate layer (100) comprising an inner surface and an outer surface and having pores (110);

a sealing layer (200) which is located on the inner surface of the substrate layer (100) or on both the inner surface and the outer surface of the substrate layer (100) and fills the pores (110) of the substrate layer (100); and

and a functional layer (300) which is positioned on the sealing layer (200) on the inner surface of the base material layer (100).

2. The cooking appliance according to claim 1, wherein the substrate layer (100) comprises any one of bamboo charcoal, charcoal and graphite.

3. Cooking appliance according to claim 1, characterized in that the sealing layer (200) is formed from a liquid resin by an infusion curing process.

4. Cooking appliance according to claim 1, characterized in that the thickness of the sealing layer (200) is in the range of 0.2mm to 15 mm.

5. The cooking appliance according to claim 1, wherein the functional layer (300) comprises a transition layer (310) on the sealing layer (200).

6. The cooking appliance according to claim 5, wherein the transition layer (310) is a metal layer.

7. The cooking appliance according to claim 5, wherein the functional layer (300) further comprises a ceramic layer (320) on the transition layer (310).

8. The cooking appliance according to claim 7, wherein the ceramic layer (320) comprises a ceramic bottom layer (321) on the transition layer (310) and a ceramic top layer (322) on the ceramic bottom layer (321).

9. The cooking appliance according to claim 5, wherein the functional layer (300) further comprises a non-stick layer (320') on the transition layer (310).

10. The cooking appliance according to claim 9, wherein the non-stick layer (320 ') comprises a non-stick bottom layer (321') on the transition layer (310) and a non-stick face layer (322 ') on the non-stick bottom layer (321').