Open-fire-free stove

Abstract

An open-fire-free stove is characterized by comprising an insulating shell, an insulating heat-insulating layer, a graphene heating disc and a heat conducting panel, the insulating shell is provided with an inner cavity, and an opening is formed in the upper end of the insulating shell; the insulating heat-insulating layer is arranged in the inner cavity of the insulating shell; the graphene heating disc is arranged on the insulating layer; the heat conduction panel is arranged on the opening of the insulating shell, and the bottom of the heat conduction panel is tightly attached to the upper end face of the graphene heating disc. The graphene heating disc adopts graphene as a heating resistor, so that the energy loss is small, the power consumption is small, and electric energy is saved.

Description

Technical Field

[0001] This utility model relates to a cooking utensil, and more particularly to a stove. Background Technology

[0002] Stoves are widely used household heating and cooking appliances, mainly divided into open-flame stoves and flameless stoves. Open-flame stoves are gas stoves, heating food through the open flame produced by burning natural gas (such as natural gas, liquefied petroleum gas, biogas, or coal gas); while most flameless stoves use electricity for heating. Because flameless stoves use electricity instead of gas, they are more environmentally friendly than open-flame stoves. Furthermore, flameless stoves effectively avoid the safety hazards of explosions and fires caused by gas leaks, making them safer than open-flame stoves.

[0003] Existing flameless stoves include induction cookers and electric stoves.

[0004] The working principle of an induction cooker: AC voltage is converted to DC voltage by a rectifier, and then the DC voltage is converted into high-frequency AC voltage exceeding the audio frequency by a high-frequency power conversion device. This high-frequency AC voltage is applied to a flat, hollow, spiral-shaped induction heating coil, thereby generating a high-frequency alternating magnetic field. The magnetic lines of force penetrate the ceramic cooktop and act on the metal pot. Strong eddy currents are generated within the cooking pot due to electromagnetic induction. As these eddy currents overcome the internal resistance of the pot, they convert electrical energy into heat energy; the resulting Joule heat is the heat source for cooking. Induction cookers can only be used with metal cookware. There are limitations on the materials of the cookware that can be cooked with induction cookers, and because they utilize the eddy current effect for heating, they often suffer from magnetic field energy leakage, which is inconvenient for users and does not contribute to energy conservation.

[0005] An electric stove consists of a heating panel and a housing. The housing provides a mounting position for the heating panel; the upper surface of the heating panel is in contact with the cookware, and the heating panel uses the heating effect of electric current to provide heat to the cookware. Because electric stoves have no restrictions on the materials of the cookware, they should have a better market prospect.

[0006] However, most existing electric furnaces use resistance wires for heating, with common materials including iron-chromium-aluminum alloys, nickel-chromium alloys, and tungsten alloys. Existing electric furnaces suffer from significant energy loss, resulting in high power consumption and hindering energy conservation. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a flameless stove with high energy utilization in light of the above-mentioned technical situation.

[0008] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a flameless stove, characterized in that it includes...

[0009] An insulating outer shell having an inner cavity and an opening at the top;

[0010] An insulating and heat-insulating layer is disposed in the inner cavity of the aforementioned insulating outer shell;

[0011] A graphene heating plate, disposed on the aforementioned insulating and heat-resistant layer, generates heat when energized; and

[0012] The heat-conducting panel is located on the opening of the aforementioned insulating shell and its bottom is in close contact with the upper surface of the graphene heating plate.

[0013] Furthermore, an electronic control board is provided inside the insulating shell, and the electrodes of the graphene heating plate are connected to the electronic control board.

[0014] To achieve precise temperature control, a through hole is provided in the middle of the graphene heating plate, and a temperature sensor connected to the electronic control board is installed in the through hole.

[0015] An insulating protective sleeve is installed inside the through hole, and the temperature sensor is housed within the insulating protective sleeve. The insulating protective sleeve facilitates accurate positioning of the temperature sensor and also provides a certain degree of protection.

[0016] The insulating shell contains an electrical control box connected to the electrical control board. The area of ​​the electrical control box projected upwards onto the heat-conducting panel forms an electromagnetic induction zone. The heat-conducting panel has a movably mounted knob for adjusting the heat output on the electromagnetic induction zone. The knob is equipped with an electromagnetic induction identification component. When the electromagnetic induction identification component is placed in the electromagnetic induction zone, the graphene heating plate can be energized.

[0017] The cooktop can only be activated and the graphene heating plate powered on when the knob is within the electromagnetic induction zone. The knob can also be rotated to control the heating power for relevant cooktop functions. If you are only performing tasks such as picking vegetables, preparing ingredients, proofing dough, or making dumplings on the countertop, the knob should be placed outside the heat-conducting panel. In this case, the graphene heating plate will be de-powered, making the process safer for the user.

[0018] The upper surface of the insulating and heat-insulating layer has an adapter groove suitable for placing the graphene heating plate. When the graphene heating plate is assembled in the adapter groove, its upper surface is flush with the upper surface of the insulating and heat-insulating layer. Furthermore, the insulating and heat-insulating layer is formed on the bottom of the graphene heating plate by aerogel spraying. Aerogel, as the material with the lowest thermal conductivity, can effectively inhibit downward heat diffusion and improve thermal efficiency.

[0019] Furthermore, the upper surface of the heat-conducting panel is a flat surface, which facilitates the placement of the frying pan.

[0020] Compared with existing technologies, the advantages of this invention are as follows: The graphene heating plate uses graphene as a heating resistor, resulting in low energy loss and low power consumption, thus saving energy. Similar to a heating element, the graphene heating plate efficiently raises the temperature of the pot bottom through its own heating, therefore it is not limited to cookware materials; besides metal, it can also be ceramic or earthenware. The graphene heating plate is thin and lightweight, contributing to the lightweight design of the cookware and expanding its application space in the kitchen. Furthermore, due to the properties of graphene, precise temperature control can be achieved in the low-temperature range of 30℃ to 100℃, meeting the heating needs for warming dishes, fermenting dough, yogurt fermentation, and preparing dried vegetables in low-temperature zones. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment.

[0022] Figure 2 This is an exploded view of an embodiment.

[0023] Figure 3 for Figure 2 Enlarged diagram of the combination of the thermal insulation protective sleeve and temperature sensor. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1 and Figure 2 As shown, the flameless stove in this embodiment is a double-burner stove, specifically including an insulating outer shell 2, an insulating heat insulation layer 4, a graphene heating plate 3, and a heat-conducting panel 1.

[0026] The insulating shell 2 has an inner cavity and an opening at the top; an electrical control board (not shown in the figure) is provided inside the insulating shell 2, and the electrodes of the graphene heating plate 3 are connected to the electrical control board.

[0027] An insulating and heat-insulating layer 4 is disposed within the inner cavity of the insulating outer shell 2; two graphene heating plates 3 are disposed on the insulating and heat-insulating layer 4 and can generate heat when energized. Specifically, the upper surface of the insulating and heat-insulating layer 4 has an adapter groove 41 suitable for placing the graphene heating plate 3. When the graphene heating plate 3 is assembled in the adapter groove 41, the upper surface of the graphene heating plate 3 is flush with the upper surface of the insulating and heat-insulating layer 4. The insulating and heat-insulating layer 4 is formed on the bottom of the graphene heating plate 3 by aerogel spraying. Aerogel, as the material with the lowest thermal conductivity, can effectively inhibit the downward diffusion of heat and improve thermal efficiency.

[0028] The heat-conducting panel 1 is located on the opening of the insulating shell 2 and its bottom is in close contact with the upper surface of the graphene heating plate 3. The upper surface of the heat-conducting panel 1 is a flat surface, which is conducive to the placement of the frying pan.

[0029] Combination Figure 2 and Figure 3 As shown, the graphene heating plate 3 in this embodiment has a through hole 31 in the middle, and a temperature sensor 5 connected to the electronic control board is installed in the through hole 31. Specifically, a heat insulation protective sleeve 51 is installed in the through hole 31, and the temperature sensor 5 is installed in the heat insulation protective sleeve 51.

[0030] An electrical control box 4a connected to the electrical control board is provided inside the insulating shell 2. The area of ​​the electrical control box 4a projected upward onto the heat-conducting panel 1 forms an electromagnetic induction zone. A knob 11 for adjusting the heat is movably provided on the electromagnetic induction zone of the heat-conducting panel 1. An electromagnetic induction identification component (not shown in the figure) is provided on the knob 11. After the electromagnetic induction identification component is placed in the electromagnetic induction zone, the graphene heating plate 3 can be energized.

[0031] The cooktop can only be activated and the graphene heating plate powered on when the knob is within the electromagnetic induction zone. The knob can also be rotated to control the heating power for relevant cooktop functions. If you are only performing tasks such as picking vegetables, preparing ingredients, proofing dough, or making dumplings on the countertop, the knob should be placed outside the heat-conducting panel. In this case, the graphene heating plate will be de-powered, making the process safer for the user.

[0032] The graphene heating plate uses graphene as the heating resistor, resulting in minimal energy loss and low power consumption, thus saving energy. Similar to a heating element, the graphene heating plate efficiently raises the temperature of the pot bottom through its own heating, so there are no restrictions on cookware materials; besides metal, it can also be made of ceramic or earthenware. The graphene heating plate is thin and lightweight, contributing to lightweight cooktops and expanding the application possibilities in the kitchen. Furthermore, due to the properties of graphene, precise temperature control can be achieved within the low-temperature range of 30℃ to 100℃, meeting the heating needs for warming dishes, fermenting dough, yogurt fermentation, and preparing dried vegetables in low-temperature zones.

Claims

1. A flameless stove, characterized in that... include An insulating outer shell (2) has an inner cavity and an opening at the top; An insulating and heat-insulating layer (4) is provided in the inner cavity of the aforementioned insulating outer shell (2); A graphene heating plate (3) is disposed on the aforementioned insulating and heat-insulating layer (4) and can generate heat when energized; and The heat-conducting panel (1) is disposed on the opening of the aforementioned insulating shell (2) and its bottom is in close contact with the upper surface of the graphene heating plate (3); The insulating shell (2) is equipped with an electrical control board, and the electrodes of the graphene heating plate (3) are connected to the electrical control board; The graphene heating plate (3) has a through hole (31) in the middle, and a temperature sensor (5) connected to the electronic control board is provided in the through hole (31); The through hole (31) is provided with a heat insulation protective sleeve (51), and the temperature sensor (5) is provided inside the heat insulation protective sleeve (51); The insulating shell (2) contains an electrical control box (4a) connected to the electrical control board. The area of ​​the electrical control box (4a) projected upwards onto the heat-conducting panel (1) forms an electromagnetic induction zone. The electromagnetic induction zone of the heat-conducting panel (1) is movably provided with a knob (11) for adjusting the firepower. The knob (11) is provided with an electromagnetic induction identification component. When the electromagnetic induction identification component is placed in the electromagnetic induction zone, the graphene heating plate (3) can be energized.

2. The flameless stove according to claim 1, characterized in that... The upper surface of the insulating and heat-insulating layer (4) has an adapter groove (41) suitable for placing the graphene heating plate (3). When the graphene heating plate (3) is assembled in the adapter groove (41), the upper surface of the graphene heating plate (3) is flush with the upper surface of the insulating and heat-insulating layer (4).

3. The flameless stove according to claim 2, characterized in that... The insulating and heat-insulating layer (4) is formed on the bottom of the graphene heating plate (3) by aerogel spraying.

4. The flameless stove according to claim 1, characterized in that... The upper surface of the heat-conducting panel (1) is a flat surface.

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