Electric heating appliance

Abstract

The utility model discloses an electric heating appliance which comprises a shell, an electric heating assembly supported by the shell, a bottom cover, a control panel, a fan and a wire, wherein the bottom cover, the shell and the electric heating assembly are assembled to form a cavity, and the control panel, the fan and the wire are arranged in the cavity. The tray is provided with a mounting hole for mounting an electric heating plate in the middle and a groove is formed between the mounting hole and the outer edge; the electric heating plate is arranged on the tray through a supporting piece; the heat insulation ring is propped against the bottom surface of the tray and surrounds the electric heating plate; the heat insulation ring is propped against the lower end of the heat insulation ring, is positioned below the electric heating plate and is in clearance fit with the electric heating plate; and the heat insulation plate is provided with a lead through hole and / or a screw hole.

Description

Technical Field

[0001] This invention relates to the field of heating equipment technology, and in particular to an electric heating appliance that uses a resistance heating plate, which can not only reduce the temperature rise of devices and / or appliances, but also increase the operating temperature of the heating plate. Background Technology

[0002] Existing electric heating appliances using resistance heating plates, such as rice cookers, electric pressure cookers, electric ovens, and multi-purpose electric ovens, still suffer from temperature rise issues due to the strong structural relationship between the heating plate and other components. Although some appliances are equipped with fans and the operating temperature of the heating plate is set relatively low, the temperature rise of the components and / or appliances is still unavoidable. Especially when it is necessary to increase the operating temperature of the heating plate, the components and / or appliances are affected by the temperature of the heating plate, which can lead to performance and quality problems at best, and personal injury and property damage at worst. Summary of the Invention

[0003] The present invention aims to weaken the strong structural relationship between the heating plate and other components by applying the heating element, and to form air flow channels in different temperature ranges. By using a fan to accelerate air flow, the heat exchange inside the appliance is accelerated, so that even if the operating temperature of the heating plate is increased, the impact of the high temperature of the heating plate on the components and / or the appliance can be effectively reduced, thereby solving at least one problem existing in the current electric heating appliance.

[0004] The technical solution of the present invention is an electric heating appliance, characterized in that it includes:

[0005] The outer casing, the heating element supported by the outer casing, the bottom cover that forms a cavity with the outer casing and the heating element, and the control panel, fan, and wires installed in the cavity;

[0006] An electric heating assembly, comprising: a tray with a mounting hole in the center for mounting an electric heating plate and a groove between the mounting hole and the outer edge; an electric heating plate mounted on the tray by a support member; a heat insulation ring abutting against the bottom surface of the tray and surrounding the electric heating plate; and a heat insulation plate abutting against the lower end of the heat insulation ring, located below the electric heating plate, and in clearance fit with the electric heating plate, and having wire through holes and / or screw holes.

[0007] Furthermore, the heating plate is flat or concave-convex, and is a resistance wire or heating film type heating device.

[0008] Furthermore, the support is three or more pads, or a notched or complete ring-shaped device.

[0009] Furthermore, the tray has one or more drainage holes in the groove.

[0010] Furthermore, the heat insulation ring is a ring-shaped device that is in a closed or open state, either in a gap fit with the heating plate or in partial contact with the heating plate.

[0011] The beneficial effects of this invention are that, since the heating assembly consisting of the tray, heating plate, support member, heat insulation ring, and heat insulation plate, and the appliance consisting of the outer shell, heating assembly, and bottom cover, respectively form two different temperature spaces, the influence of the heating plate temperature on the device and / or appliance is effectively reduced with the acceleration of airflow by the fan. This not only solves the problem of temperature rise in devices and / or appliances during use in the prior art, but also significantly increases the operating temperature of heating plates with different structures, solving at least one problem that conventional technologies cannot solve. Other effects will be set forth in part in the description which follows, and in part will become apparent from the following description, or may be learned from practice of the invention. Attached Figure Description

[0012] Figure 1 This is an isometric schematic view of the electric heating appliance in the embodiment;

[0013] Figure 2 This is a schematic cross-sectional view of the electric heating appliance in the embodiment;

[0014] Figure 3 This is an exploded isometric view of the electric heating appliance of the embodiment;

[0015] Figure 4 This is a schematic cross-sectional view of the electrothermal assembly in the embodiment;

[0016] Figure 5 This is an exploded isometric view of the electrothermal assembly of the embodiment;

[0017] Figure 6 This is a schematic view of the airflow inside the electric heating appliance in the embodiment.

[0018] Reference numerals: 1. Outer shell; 2. Heating element; 21. Heating plate; 22. Tray; 221. Mounting hole; 222. Groove; 23. Support; 24. Insulation ring; 25. Insulation board; 251. Wire through hole; 252. Screw hole; 3. Bottom cover; 4. Control board; 5. Fan; DK. Cavity; GK. Gap; KQ. Air. Detailed implementation method:

[0019] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings. The described embodiments are exemplary, wherein similar reference numerals denote the same or similar devices, or devices having the same or similar functions. The terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings and are merely for the convenience of describing the present invention and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0020] This invention involves conceptual explanations. "Abutting": "Abutting" refers to squeezing, pushing, pressing, or pressing with force; "connecting" means linking. "Abutting" refers to a connection method where two or more devices are squeezed, pushed, pressed, or pressed together by forces generated in different ways to form a fixed or movable connection. "Control board": refers to a general term for electrical components in traditional cooking appliances, including PCB boards, electronic components, ICs, relays, wires, etc., that have human-computer interaction and intelligent control functions, and consist of one or more circuit boards. Since the specific structure and control method of the control board are not directly related to the scope of protection of this technical solution, they will not be described in detail. Terms and concepts such as "wire via," "screw hole," "clearance fit," "notch," "closed," and "open" should be interpreted broadly based on known technology and the description herein, unless otherwise explicitly specified and limited. Therefore, those skilled in the art can understand the meaning of the above terms and concepts in this invention according to the specific circumstances.

[0021] The following is for reference. Figures 1 to 5 The present invention describes an electric heating appliance.

[0022] The technical solution of the present invention is an electric heating appliance, characterized in that it comprises:

[0023] Made of metallic or non-metallic materials, consisting of one or more components, the outer shell has an air outlet. An electric heating element supported by the outer shell, when assembled with the outer shell and the electric heating element, forms a cavity. Also consisting of one or more components, made of metallic or non-metallic materials, the bottom cover has an air inlet. A control board, a fan, and wires are also located within the cavity. Furthermore, when the fan operates, cold air is drawn in through the air inlet, and a portion flows through the components in the cavity, carrying away the heat from the components and exiting through the air outlet, effectively reducing the temperature rise of the components and / or appliances. Conversely, placing the fan at the air outlet allows air to be drawn in, enabling heat exchange between the cold air and the components and / or appliances, also reducing the temperature rise of the components and / or appliances.

[0024] The electric heating assembly includes: a mounting hole in the center for mounting the heating plate, with a groove between the mounting hole and the outer edge for heat insulation, water storage, and air flow; one or more drainage holes in the groove, or no drainage holes; and a tray made of metal or high-temperature resistant non-metallic material; a flat or convex heating plate, of resistance wire type or electric heating film type, mounted on the tray via three or more circular, square or irregularly shaped pads, or a notched or complete annular support made of a material with excellent high-temperature resistance, low thermal conductivity, and waterproof performance; the heating plate being higher or lower than the tray, or at the same level as the tray. The tray is flush with the surface; an annular heat insulation ring made of a non-metallic material with low thermal conductivity is attached to the bottom surface of the tray, with a gap fit or partial contact with the heating plate, in a closed or open manner; and a heat insulation plate made of metallic or non-metallic material is attached to the lower end of the heat insulation ring, below the heating plate, with a gap fit, and has wire through holes and / or screw holes; furthermore, to avoid large-area heat radiation from the bottom surface of the heating plate, which would rapidly raise the temperature of the tray, the size of the mounting holes on the tray is preferably larger than or approximately the size of the bottom surface of the heating plate; to avoid the heating plate... Heat is directly conducted to the tray, and airflow facilitates heat removal. The support components are preferably multiple pads or notched rings to increase the airflow gap between the heating plate and the tray. To prevent hot air from mixing into the appliance's cavity under fan action, and to prevent heat radiation from the heating plate's perimeter from transferring to other components, the insulation ring is preferably made of a notched ring from a flexible, low-thermal-conductivity non-metallic material (such as asbestos, fiberglass, aerogel, etc.), and the notch in the insulation ring should be aligned with and close to the air outlet. To better block heat radiation from the bottom of the heating plate, and... To ensure that its own temperature does not rise too quickly, the heat insulation board is preferably made of heat insulation materials such as mica, asbestos, and fiberglass. In summary, the electric heating assembly composed of the tray, support, heating plate, heat insulation ring, and heat insulation board forms a high-temperature gap that can effectively prevent the high temperature of the heating plate from being transmitted to other devices. Even when the fan is not working, the cold air in the appliance cavity can flow through the holes in the heat insulation board and the gap between the heating plate and the tray, carrying away the heat in the high-temperature gap. When the fan is working, it will accelerate the air flow in the high-temperature gap, thereby better reducing the temperature rise of other devices and / or appliances.

[0025] Therefore, the aforementioned electric heating appliance is suitable for household or commercial use: electric rice cooker, electric pressure cooker, electric slow cooker, electric steamer, electric multi-purpose cooker, air fryer, health pot, multi-purpose electric stove and other cooking appliances.

Claims

1. An electric heating appliance, characterized in that, include: The outer casing, the heating element supported by the outer casing, the bottom cover that forms a cavity with the outer casing and the heating element, and the control panel, fan, and wires installed in the cavity; An electric heating assembly, comprising: a tray with a mounting hole in the center for mounting an electric heating plate and a groove between the mounting hole and the outer edge; an electric heating plate mounted on the tray by a support member; a heat insulation ring abutting against the bottom surface of the tray and surrounding the electric heating plate; and a heat insulation plate abutting against the lower end of the heat insulation ring, located below the electric heating plate, and in clearance fit with the electric heating plate, and having wire through holes and / or screw holes.

2. An electric heating appliance according to claim 1, characterized in that, The heating plate is flat or concave-convex, and is a resistance wire or heating film type heating device.

3. An electric heating appliance according to claim 1, characterized in that, The support is three or more pads, or a notched or complete ring-shaped device.

4. An electric heating appliance according to claim 1, characterized in that, The tray has one or more drainage holes in its groove.

5. An electric heating appliance according to claim 1, characterized in that, The heat insulation ring is a ring-shaped device that is in a closed or open state and is in close contact with the heating plate, either with a gap fit or in a local area.

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