CN2144381Y - Resistance heating element with thermal-protective coating - Google Patents

Abstract

The utility model relates to a resistance heating element with a thermal-protective coating, which adopts the design that the surface which does not need heating is covered by a heat insulating material as a heat insulator and adopts a sheet metal or a wire mesh to be used as a protective cover on the basis of an existing resistance heating element. Both the heat insulator and the protective cover form a thermal-protective coating which is fixed on the existing heating element to shield the element; thus, the heat efficiency of the element is improved to achieve the purpose of power consumption saving.

Description

Resistance heating element with thermal-protective coating

Affiliated technical field: stratie manufacturing.

Prior art: present stratie on heating collar of using on the injection molding machine or household electrical appliance etc. is to adopt on micarex 1 around Ni-Cr or F -Cr-Al resistance wire (or band) 2 is made euthermic chip, and at the two sides of this chip good flame retardant coating 3 of insulation, the heating element that metal shell 4 is made tabular or loop shaped is wrapped in the outside.Energized can be used.This simple in structure available, but the energising after, whole metal shell all is heated, and to around distribute heat.

The purpose of utility model: improve the heat efficiency, electrical energy saving.

Below in conjunction with accompanying drawing technical solution of the present utility model is commented.

Fig. 1. the present stratie generalized section of using.

Wherein: 1. micarex 2. resistance wires (or band)

3. insulated fireproof layer 4. metal shell

Fig. 2. stratie generalized section of the present invention.

Wherein: 5. heat-barrier material 6. protective covers

Owing in the process that reality is used, often only simultaneously need heating at certain, and other face does not need heating. Above-mentioned stratie does not need the direction distribute heat that heats not only useless to other, and improves environment temperature, causes inconvenience.

Shown in Fig. 1 .2., the utility model is on the basis of former stratie, comes with heat-barrier material 5; protective cover 6 is made the heat-insulation and heat-preservation cover; embodiment 1, makes heat-barrier material by insulation materials such as alumina silicate fibres, makees protective cover by sheet metal or silk screen; the two is combined into a heat-insulation and heat-preservation cover; and be fixed on this stratie, embodiment 2, adopt the method for welding or mechanical connection; make it to be fixed on the stratie, become one with the stratie of thermal insulation layer

Principle of the present utility model is the face portion that does not need to heat or all shieldings, these faces and extraneous heat exchange is reduced, thereby reach both electrical energy saving, and making does not simultaneously need the surface temperature of heat supply obviously to reduce yet.

Advantage of the present utility model: the stratie of two equal-wattages, one is adopted the present invention to make, and another is to adopt original explained hereafter, is used on the family expenses electric kettle with a kind of model, the material of equal number is heated to boils, the former is than latter electrical energy saving about 18%.

Claims (1)

1. The stratie of band thermal insulation layer is different from former stratie, it is characterized in that, a muff of being made by heat-barrier material is fixed on this stratie and makes it to become one, thereby constitutes the stratie of a new construction.

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