Heating frame for electric appliance

Abstract

The utility model relates to the technical field of household appliances, in particular to a heating frame for an electric appliance. Comprising heat dissipation frames, heat dissipation sheets are arranged on the heat dissipation frames, the two heat dissipation frames are symmetrically arranged up and down, a heating sheet is installed between the two heat dissipation frames, the heat dissipation frames and the heat dissipation sheets are integrally made of aluminum alloy materials, and the heating sheet is made of MCH ceramic materials. According to the heating frame for the electric appliance, the radiating frame made of the aluminum material and the radiating fins of the radiating frame are matched with the heating fins made of the MCH ceramic material to form a novel heater, the heater has the advantages of being small in power, environmentally friendly, capable of saving energy, high in production efficiency, easy to assemble and the like, and therefore application and popularization are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to domestic appliance technical field especially relates to a heating frame for electric appliance. BACKGROUND

[0002] Hair dryer is common household appliance in people's daily life. Hair dryer can blow hot air, and is used to realize the functions such as blow drying hair or drying other objects. The hair dryer is provided with a fan and a heating device, wherein the heating device is used to heat under the condition of power on, and the wind blown by the fan is heated by the heating device to form the hot air blown by the hair dryer.

[0003] The traditional heating device inside the hair dryer usually adopts a heating frame made of nickel wire or a heating sheet made of PTC ceramic material. The heating frame made of nickel wire has large power and high power consumption, does not conform to the existing environmental protection concept, and is not insulated, so the safety is low during use. The heating sheet made of PTC ceramic material is electrified and contains lead, so it also has the problems of environmental pollution and low safety during use, and is not conducive to popularization and use. SUMMARY

[0004] The utility model technical scheme provides a solution significantly different from the prior art to solve the technical problem that the prior art solution is too single. In order to overcome the above-mentioned defects of the prior art, the utility model provides a heating frame for electric appliance, which aims to solve the problems proposed in the above background art.

[0005] To achieve the above-mentioned purpose, the utility model provides a heating frame for electric appliance, which comprises: a heat dissipation frame, the heat dissipation frame is provided with heat dissipation fins, and two heat dissipation frames are symmetrically arranged on the heat dissipation frame, and a heating sheet is installed between the two heat dissipation frames, the heat dissipation frame and the heat dissipation fins are made of aluminum alloy material, and the heating sheet is made of MCH ceramic material.

[0006] The heat dissipation frame and the heat dissipation fins on the upper end surface thereof cooperate with the heating sheet to form a heating device structure. The high thermal conductivity of aluminum can quickly transfer heat, and the heat dissipation efficiency can be significantly improved by combining with the convection design. The optimized heat dissipation efficiency reduces energy consumption, meets the green environmental protection requirements, the heating sheet made of MCH ceramic material adopts metal tungsten / molybdenum manganese slurry as the heating layer, the electric heating conversion efficiency is significantly better than that of PTC semiconductor material, the energy saving is 20%-30% under the same working condition, the surface withstand voltage reaches 4500V, the leakage current is less than 0.5mA, there is no open flame risk, it is suitable for flammable environment, and it does not contain harmful substances such as lead, mercury and hexavalent chromium, and it is environmentally friendly and non-toxic.

[0007] Preferably, the opposite sides of the two heat dissipation frames are provided with cavities for mounting the heating sheet.

[0008] The gap between the opposite sides of the two heat dissipation frames forms a cavity for mounting the heating sheet.

[0009] Preferably, the fins are arranged at equal intervals on the heat dissipation frame.

[0010] The number of fins needs to be determined comprehensively according to heat dissipation requirements, environmental restrictions (such as space, noise requirements) and cost budget, and reasonable configuration can balance low noise, light weight and high economy while ensuring heat dissipation performance.

[0011] Preferably, the heating fin is provided with a wire on one side.

[0012] The wire adopts the existing structure in the field, and the heating fin wire realizes efficient conversion of electric energy and safe operation of the equipment through three functions of conduction, connection and protection. The design needs to consider high temperature resistance, corrosion resistance and environmental protection requirements to meet the needs of the household appliance field. This means is a common sense in the field, so it is not described again.

[0013] Preferably, two wires are arranged in parallel, and a protective film is arranged at the connection between the wire and the heating fin.

[0014] The two wires form a complete loop for current transmission, one is used for inputting current to the heating fin, and the other is used for leading out current to form a closed circuit, so as to ensure that electric energy is stably converted into heat energy. The protective film mainly plays the functions of electrical insulation and high temperature resistance protection. Specifically, the protective film isolates the wire and the heating fin to prevent electric leakage or short circuit. The electric leakage is usually controlled within a safe range of <0.5mA, and in a high temperature working environment, the protective film can withstand thermal stress to avoid the peeling of the metal wire and the ceramic matrix due to the difference in expansion coefficient, further reflecting the safety of the device in use.

[0015] Preferably, it further comprises a bonding layer, which is pre-set in the cavity and located at the connection between the heat dissipation frame and the heating fin, and the bonding layer adopts a solid adhesive material.

[0016] The solid adhesive mainly adopts thermoplastic resin (such as EVA, polyamide) or thermosetting resin as the matrix, and the cross-linked structure between the molecular chains can improve the thermal decomposition temperature. The thermal stability of some modified materials can reach more than 200 DEG C, which has stable high temperature resistance, so as to be suitable for high temperature environment, and further ensure the stability of the connection between the heat dissipation frame and the heating fin.

[0017] The beneficial effects of the utility model are as follows:

[0018] In use, the heat dissipation frame and the fins made of aluminum material cooperate with the heating fin made of MCH ceramic material to form a new type of heating device. The heating device has the characteristics of small power, environmental protection and energy saving, high production efficiency and simple assembly, which is conducive to popularization and use. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 is the front view structure schematic diagram of the embodiment of the present application;

[0021] Figure 2 is the side view structure schematic diagram of the heat dissipation frame of the embodiment of the present application;

[0022] Figure 3 is the top view structure schematic diagram of the heating sheet of the embodiment of the present application;

[0023] Figure 4 is the embodiment of the present application Figure 1 A place in the enlarged structure schematic diagram.

[0024] Part name

[0025] 1, heat dissipation frame; 101, heat dissipation sheet; 2, cavity; 3, heating sheet; 301, wire; 302, protective film; 4, glue layer. Embodiment

[0026] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, and the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0027] In the description of the present application, it is understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, in the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0028] Please refer to Figures 1 to 4The utility model provides a kind of heating frame for electric appliance, comprising: heat dissipation frame 1, heat dissipation fin 101 is provided on heat dissipation frame 1, and two are symmetrically arranged on heat dissipation frame 1, and heating fin 3 is installed between two heat dissipation frames 1, heat dissipation frame 1 and heat dissipation fin 101 whole adopt aluminium alloy material, heating fin 3 adopts MCH ceramic material, the opposite side of two heat dissipation frames 1 is preconfigured with the cavity 2 for installing heating fin 3, more than one is provided with on heat dissipation frame 1 at equal intervals, heating fin 3 side is provided with wire 301, wire 301 is provided with two parallel, and wire 301 and heating fin 3 junction are provided with protective film 302, glue layer 4 is preconfigured in cavity 2 inside, located the junction of heat dissipation frame 1 and heating fin 3, and glue layer 4 adopts solid glue material;

[0029] In the embodiment:

[0030] First, select two heat dissipation frames 1 of aluminium alloy material, and install corresponding heat dissipation fin 101 of specified quantity and specified area on two heat dissipation frames 1, after installation, two heat dissipation frames 1 are placed symmetrically upside down, form the cavity 2 for installing heating fin 3;

[0031] Second, wire 301 is installed on heating fin 3, and protective film 302 is installed at the junction of wire 301 and heating fin 3;

[0032] Finally, heating fin 3 is installed in the above cavity 2, and glue layer 4 is coated at the gap between heating fin 3 and heat dissipation frame 1, so as to guarantee the stability of the connection between heating fin 3 and heat dissipation frame 1, and then form the whole heating device.

[0033] The above only discloses a preferred embodiment of the utility model, and of course cannot limit the scope of the utility model, and those skilled in the art can understand that all or part of the above processes can be implemented, and equivalent changes made according to the utility model claims still belong to the scope covered by the utility model.

Claims

1. A heating rack for an electric appliance, comprising: The heat dissipation frame (1) is provided with a heat dissipation fin (101), and two heat dissipation frames (1) are symmetrically arranged on the upper and lower parts of the heat dissipation frame (1), and a heating fin (3) is arranged between the two heat dissipation frames (1), characterized in that the heat dissipation frame (1) and the heat dissipation fin (101) are made of aluminum alloy material, and the heating fin (3) is made of MCH ceramic material.

2. The heat frame for an electric appliance according to claim 1, wherein The opposite sides of the two heat dissipation frames (1) are provided with cavities (2) for mounting the heating fin (3).

3. The electric appliance heating rack according to claim 1, wherein The heat dissipation fin (101) is arranged at equal intervals on the heat dissipation frame (1).

4. The electric appliance heating rack according to claim 1, wherein The heating fin (3) is provided with a wire (301) on one side.

5. The electric appliance heating rack according to claim 4, wherein The wire (301) is arranged in parallel with two wires, and the wire (301) is provided with a protective film (302) at the connection position of the wire (301) and the heating fin (3).

6. The heat generating stand for electric appliances according to claim 1, wherein Further comprising a glue layer (4) which is arranged in the cavity (2) and is located at the connection position of the heat dissipation frame (1) and the heating fin (3), and the glue layer (4) is made of solid glue material.

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