Heating film structure and frying tool thereof

Abstract

The utility model provides a heating film structure and a frying tool thereof, and relates to the technical field of household appliances, and the heating film structure comprises a surface layer, a heat conduction insulating layer, a heating film and a heat insulation insulating layer which are sequentially stacked from top to bottom; the heating film comprises a conductive layer, and a first electrode piece and a second electrode piece which are connected to the conductive layer; and the first electrode piece and the second electrode piece are flat and are connected to the upper surface or the lower surface of the conductive layer. The heating film structure has the beneficial effects that the heating film structure comprises the surface layer, the heat-conducting insulating layer, the heating film and the heat-insulating insulating layer which are combined into a whole sheet shape, so that the heating film structure has the effects of light structure, space saving and convenience in storage; when the heating film structure is applied to the frying tool, due to the fact that the heating film structure is light and thin and does not occupy too much space, the frying tool can be designed into a small and light style, packaging, carrying and storing of the frying tool are facilitated, and due to the fact that the whole plate face of the heating film structure emits heat, food is heated evenly, and the heating effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a heating film structure and a frying utensil thereof. Background Art

[0002] With the improvement of living standards, household appliances in modern kitchens emerge in an endless stream, such as electric stew pots, soup pots, electric frying pans, grilling machines, rice cookers, electric pressure cookers, electric hot pots, etc. In order to meet the needs of cooking, different cooking processes generally require different cooking utensils. Among them, electric frying pans use electrical energy to convert energy into thermal energy to heat food or liquid. The bottom of existing electric frying pans is generally connected to the heating element through conductive contact. At a specific position at the bottom of the electric frying pan body, there is usually a metal contact point or connector for connecting the heating element and the power cord. This contact point or connector will contact the electrode of the heating element, thereby transferring current and energy to make the heating element heat up.

[0003] Many patents on electric frying pans have been published. For example, the patent document (application number: 201920794203.0, patent name: electric frying pan) discloses "an electric frying pan, comprising a shell and a pot body embedded in the shell, a temperature control device is also installed between the shell and the outer bottom surface of the pot body, the bottom of the pot body is concave toward the pot mouth, and the temperature control device is heat-conductingly connected to the concave part. Since the bottom of the pot body is concave toward the pot mouth, when the pot body is dry-burned, the water in the concave part of the pot bottom will be dried up first, and the temperature control device is arranged here. It can sense the dry burning condition of the pot body more sensitively, thereby more reliably avoiding the safety problem of excessive local temperature caused by dry burning of the electric frying pan", and further mentions the heating structure as follows: "The heating device includes a heating tube fixed to the outer bottom wall of the pot body and a mounting frame connected to the heating tube, the mounting frame is in thermal contact with the pot body, and the temperature control device is mounted on the mounting frame. The outer bottom wall of the pot body and the heating tube can be fixed by riveting, and then the mounting frame is thermally connected to the outer bottom wall of the pot body. In this way, the temperature control device can be installed on the pot body while fixing the heating device. "

[0004] The heating element used in the solution of the above-mentioned patent is a heating tube, but the structure of the heating tube will make the electric frying pan larger in size and heavier in structure, which makes the product packaging, transportation and storage very inconvenient; and the structure is also prone to uneven heating, for example, the temperature of the pan body close to the heating tube is high, and the temperature of the pan body far away from the heating tube is low, which may easily cause burning. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art and provides a heating film structure, which comprises a surface layer, a heat-conducting insulating layer, a heating film and a heat-insulating insulating layer, which are combined into a sheet-like structure and have a light structure. When applied to a frying pan, the frying pan has the effects of occupying a small space and heating evenly.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] A heating film structure comprises a surface layer, a heat-conducting insulating layer, a heating film and a heat-insulating insulating layer stacked in sequence from top to bottom; the heating film comprises a conductive layer, and a first electrode member and a second electrode member connected to the conductive layer; the first electrode member and the second electrode member are flat and connected to the upper surface or the lower surface of the conductive layer.

[0008] Furthermore, the first electrode member and the second electrode member have the same structure; the first electrode member or the second electrode member comprises a metal strip, and the metal strip is connected to the conductive layer;

[0009] Alternatively, the first electrode member or the second electrode member comprises a metal strip and a coating member, the coating member is connected to the conductive layer, and the metal strip is connected to the coating member; the coating member is a silver paste conductive strip or a carbon paste conductive strip.

[0010] Furthermore, a plurality of protrusions are arranged on a surface of the metal strip that is in contact with the coating component.

[0011] Furthermore, the heating film further includes an insulating layer, and the insulating layer is stacked on the lower surface of the conductive layer.

[0012] Furthermore, the heat-insulating layer comprises a plastic plate and an aerogel block, a groove is provided in the middle of the plastic plate, and the aerogel block is arranged in the groove.

[0013] Furthermore, the thickness of the heating film is 0.02 mm to 1 mm; the thickness of the thermally conductive insulating layer is 0.01 mm to 2 mm.

[0014] A frying utensil comprises any one of the above described heating film structures.

[0015] Furthermore, it comprises a disc body, a concave position is formed in the middle of the disc body, and the heating film structure is flatly fixed in the concave position; and a plurality of reinforcing convex patterns are formed by pressing on the lower surface of the disc body.

[0016] Furthermore, support members are arranged on both sides of the lower side of the disk body, and the support members on both sides surround the lower surface of the disk body to form a heat dissipation area; a handle is arranged on the support member, and the upper surface of the handle is provided with friction patterns, and the lower surface of the handle is hollowed out to form a hand-gripping position.

[0017] Furthermore, a rubber piece is provided at the lower end of the support piece; one side of the support piece is provided with a wire socket, and the wire socket is electrically connected to the heating film.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The surface layer, the heat-conducting insulating layer, the heating film and the heat-insulating insulating layer of the heating film structure are combined to form a sheet, which has the functions of light structure, space saving and convenient storage. The heating film structure is applied to frying utensils. Since it is light and thin and does not occupy much space, it is helpful to design the cookware into a small and light style, which is helpful for the packaging, transportation and storage of the cookware. Moreover, since the heating film structure heats the entire plate surface, the food is heated evenly and the heating effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is the overall diagram of the heating membrane structure;

[0022] Figure 2 It is a schematic diagram of the structure of the heating film;

[0023] Figure 3 It is a schematic diagram of the structure of the metal strip;

[0024] Figure 4 It is a schematic diagram of the structure of the thermal insulation layer;

[0025] Figure 5 It is a three-dimensional frying pan. Figure 1 ;

[0026] Figure 6 It is a three-dimensional frying pan. Figure 2 ;

[0027] Figure 7 It is a front view of the frying pan.

[0028] In the figure: 1, surface layer; 2, thermal conductive insulation layer;

[0029] 3. Heating film; 301. Conductive layer; 302. Metal strip; 3021. Bump; 303. Coating member;

[0030] 4. thermal insulation layer; 401. plastic plate; 402. aerogel block;

[0031] 5. Plate body; 501. Concave position; 502. Reinforced convex pattern; 6. Support member; 7. Heat dissipation area; 8. Handle; 801. Friction pattern; 802. Handle position;

[0032] 9. Electrical socket. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0034] like Figures 1 to 4 As shown, a heating film structure includes a surface layer 1, a heat-conducting insulating layer 2, a heating film 3 and a heat-insulating insulating layer 4 stacked in sequence from top to bottom. The surface layer 1, the heat-conducting insulating layer 2, the heating film 3 and the heat-insulating insulating layer 4 are combined to form a sheet as a whole, which has the functions of light structure, space saving and convenient storage; the upper layers are fixed by high-temperature adhesive bonding, or the upper four layers are stacked and connected by screws, nuts or rivets. Among them, the surface layer 1 is used to place the object to be heated, or to contact the object to be heated, so the surface layer is a heat-conducting surface layer 1. The heat-conducting insulating layer 2 needs to play a heat-conducting role on the one hand, and then transfer the heat emitted by the heating film 3 to the surface layer 1 for heating the object. On the other hand, it needs to play an insulating role, thereby avoiding the current in the heating film 3 from being transferred to the surface layer 1, thereby avoiding the risk of electric shock to the human body during use of the heating structure. Among them, the heating film 3 can generate heat by electric heating, and the generated heat is transferred to the surface layer 1 through the heat-conducting insulating layer 2. Among them, on the one hand, the thermal insulation layer 4 can play a role of insulation, so that the heat generated by the heating film 3 will not be transferred to the bottom surface of the heating structure, and ensure that the heat is transferred to the surface layer 1. On the other hand, the thermal insulation layer 4 can play an insulating role, thereby ensuring that the current generated by the heating film 3 will not be transferred to the side of the thermal insulation layer 4, thereby avoiding the risk of electric shock to the human body.

[0035] Among them, the heating film 3 includes a conductive layer 301, and a first electrode member and a second electrode member connected to the conductive layer 301; the first electrode member and the second electrode member are flat and connected to the upper surface or the lower surface of the conductive layer 301; the first electrode member and the second electrode member are connected to an external power supply, and the current is transmitted to the conductive layer 301. After receiving the current, the conductive layer 301 generates heat and generates heat, and the heat is then transmitted to the surface layer 1 through the thermally conductive insulating layer 2.

[0036] The surface layer 1 can be one of a metal layer, a tempered ceramic layer, a glass layer, and a rock layer. Among them, the metal layer, the tempered ceramic layer, the glass layer, and the rock layer all have good heat-receiving properties and can use the received heat to heat objects. The thermally conductive insulating layer 2 can be one of a mica film, a quartz film, a boron nitride film, a boron nitride coating, Teflon paper, a thermally conductive silicone layer, and a thermally conductive silicone grease layer. Among them, the mica film, the quartz film, the Teflon paper, the thermally conductive silicone layer, and the thermally conductive silicone grease layer have both good thermal conductivity and good insulation properties, so they can conduct the heat generated by the heating film 3 to the surface layer 1, and at the same time they can isolate the current of the heating film 3 from being transmitted to the surface layer 1, thereby avoiding the risk of electric shock to the human body.

[0037] The first electrode member and the second electrode member have the same structure; the first electrode member or the second electrode member comprises a metal strip 302, the metal strip 302 is connected to the conductive layer 301, and the current is directly transferred from the metal strip 302 to the conductive layer 301 to generate heat.

[0038] During the manufacturing process, the conductive layer 31 is made of a polymer substrate and a conductive material dispersed in the polymer substrate; wherein the polymer substrate is suitable for dispersing the conductive material, and the polymer substrate is made of polyimide, which has the characteristics of high temperature resistance and is easy to disperse the conductive material, so that the conductive effect of the entire conductive layer 301 is good.

[0039] Or as another improvement, the first electrode member or the second electrode member includes a metal strip 302 and a coating member 303, the coating member 303 is connected to the conductive layer 301, and the metal strip 302 is connected to the coating member 303; the coating member 303 is a silver paste conductive strip or a carbon paste conductive strip. The metal strip 302 can be a copper strip, a silver strip or an aluminum strip. Among them, the copper strip is more commonly used because of its relatively low cost, low resistance, and the advantages of not being easily oxidized. The metal strip 302 is used to transfer current. The metal strip 302 is directly attached and contacted to the surface of the conductive layer 301, and can transfer the current of the metal strip 302 to the conductive layer 31.

[0040] The silver paste conductive strips or carbon paste conductive strips in the coating component 303 are formed by printing silver paste or carbon paste onto the conductive layer 301 and then drying it to form a stable coating structure, which is then connected to the metal strip 302 for easy wiring.

[0041] A plurality of protrusions 3021 are provided on the side of the metal strip 302 that is in contact with the coating component 303, so as to enhance the friction between the bottom surface of the metal strip 302 and the coating component 303, thereby helping to enhance the stability of the connection.

[0042] As another improvement, the heating film 3 also includes an insulating layer, which is stacked on the lower surface of the conductive layer 301. The heating film 3 including the conductive layer 301 and the insulating layer has a double-layer structure, and the insulating layer can enhance the insulation performance of one side of the thermal insulation layer.

[0043] The thermal insulation layer 4 includes a plastic plate 401 and an aerogel block 402. A groove is opened in the middle of the plastic plate 401, and the aerogel block 402 is arranged in the groove; the aerogel block 42 has a good insulation effect. The aerogel block 42 is in contact with the heating film 3, which can isolate the heat generated by the heating film 3 from being transferred outward in the direction of the thermal insulation layer 4.

[0044] The thickness of the heating film 3 is 0.02 mm to 1 mm, and the thickness of the heat-conducting insulating layer 2 is 0.01 mm to 2 mm. In this embodiment, the thickness of the heating film 3 is 0.06 mm, and the thickness of the heat-conducting insulating layer 2 is 1 mm.

[0045] like Figures 5 to 7 As shown, the utility model also requests protection for a frying utensil, comprising any of the above-mentioned heating film structures, wherein it also includes a plate body 5, a concave position 501 is formed in the middle of the plate body 5, the heating film structure is flatly fixed in the concave position 501, and the installation is stable. The lower surface of the plate body 5 is pressed to form a plurality of reinforcing convex patterns 502, which is beneficial to enhance the supporting strength of the plate body 5.

[0046] Support members 6 are provided on both sides of the bottom of the pan 5. The support members 6 support the frying pan as a whole, and a rubber member is provided at the lower end of the support member 6. The rubber member has the effect of anti-slip and silent. The support members 6 on both sides and the lower surface of the pan 5 surround to form a heat dissipation area 7, that is, the lower surface of the pan 5 is directly exposed to the heat dissipation area 7, which is conducive to ventilation and heat dissipation.

[0047] A handle 8 is provided on the support member 6. The entire frying pan can be moved by holding the handle 8 at both ends. The upper surface of the handle 8 is provided with a friction pattern 801, which helps to enhance the friction with the fingers. The lower surface of the handle 8 is hollowed out to form a hand-locking position 802, which can be buckled into the fingers when holding, making the holding more stable.

[0048] One side support member 6 is provided with a wire socket 9, which is electrically connected to the heating film 3. A power line is inserted from the wire socket 9 to transfer current to the heating film 3 for heating.

[0049] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A frying utensil, characterized in that: The invention comprises a heating film structure, wherein the heating film structure comprises a surface layer (1), a heat-conducting insulating layer (2), a heating film (3) and a heat-insulating insulating layer (4) which are stacked in sequence from top to bottom; the heating film (3) comprises a conductive layer (301), and a first electrode member and a second electrode member connected to the conductive layer (301); the first electrode member and the second electrode member are flat and connected to the upper surface or the lower surface of the conductive layer (301); The first electrode member and the second electrode member have the same structure; the first electrode member or the second electrode member comprises a metal strip (302), and the metal strip (302) is connected to the conductive layer (301); Alternatively, the first electrode member or the second electrode member comprises a metal strip (302) and a coating member (303), the coating member (303) is connected to the conductive layer (301), and the metal strip (302) is connected to the coating member (303); the coating member (303) is a silver paste conductive strip or a carbon paste conductive strip; A plurality of protrusions (3021) are provided on a surface of the metal strip (302) that is in contact with the coating component (303); The heating film (3) further comprises an insulating layer, wherein the insulating layer is stacked on the lower surface of the conductive layer (301); The heat-insulating layer (4) comprises a plastic plate (401) and an aerogel block (402); a groove is provided in the middle of the plastic plate (401), and the aerogel block (402) is arranged in the groove; The thickness of the heating film (3) is 0.02 mm to 1 mm; the thickness of the thermally conductive insulating layer (2) is 0.01 mm to 2 mm; It comprises a disc body (5), wherein a concave position (501) is formed in the middle of the disc body (5), and the heating film structure is flatly laid and fixed in the concave position (501); and a plurality of reinforcing convex patterns (502) are formed by pressing on the lower surface of the disc body (5); Support members (6) are arranged on both sides below the disk body (5), and the support members (6) on both sides and the lower surface of the disk body (5) surround to form a heat dissipation area (7); a handle (8) is arranged on the support member (6), and the upper surface of the handle (8) is provided with friction lines (801), and the lower surface of the handle (8) is hollowed out to form a hand-gripping position (802).

2. A frying utensil according to claim 1, characterized in that: A rubber piece is provided at the lower end of the support member (6); one side of the support member (6) is provided with an electric wire socket (9), and the electric wire socket (9) is electrically connected to the heating film (3).

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