JPS6264086A - Panel heater - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a planar heater used as a heating source in appliances such as space heaters, cookers, and dryers, and in particular employs a mica plate used in electric pots. The present invention relates to a planar heater.

2. Description of the Related Art Conventionally, an inexpensive planar heater commonly called a mica heater has been used as a heating source for electric kettles.

This mica heater has a heater wrapped around a mica plate, and is integrated with two sheets of insulating mica in a sandwich shape.

On the other hand, modern electric kettles boil water and then
Boiling types that can keep warm have started appearing on the market. In this case, two types of heating elements are required: a high-wattage heating element for boiling and a low-wattage heating element for heat retention. Winding devices for heating elements and low-wattage heating elements.
1. Then, two heating elements sandwiched between two sheets of insulating mica and covered with an exterior body, or constructed by wrapping a heating wire around a heat-resistant insulating plate, are arranged on the same plane, and the Both sides were sandwiched between heat-resistant insulating plates and covered with an exterior body.

Problems to be Solved by the Invention However, when arranging two heating elements on the same plane in this way, the size of the plane is limited, or it is difficult to wrap low-wattage heating elements. will arise.

Furthermore, when high-wattage heating elements are used, the temperature distribution may become extremely poor depending on the positional relationship of the heating elements.

The present invention solves these problems, and provides a planar heater in which two or more heating elements with different electric space K and wattage can be embedded, and which has excellent temperature distribution. The purpose is to

Means for Solving the Problems In order to solve the above problems, the present invention has two or two
Heater elements made of more than one sheet-like metal foil are laminated and embedded in insulating mica, and a predetermined insulating distance is provided between each of the heater elements.

Effect According to the above configuration, heater elements made of sheet-like metal foil bodies are used as heating elements of different wattages,
Moreover, since the heater elements are laminated with a predetermined insulating distance between them, it is electrically safe. In addition, the heater element has a structure in which the temperature is evenly distributed over the entire insulating mica, resulting in extremely excellent temperature distribution, while the overall thickness of the insulating mica is kept to a dimension that ensures the minimum insulation distance. Since the heater element is integrated and integrated, the heat capacity is small and the heat conduction is excellent, and as a result, the life of the heater element can be extended.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 4. In the figure, 1 is insulating mica, and in this insulating mica 1, two heater elements 2 made of smooth mesh-like 5US430 and having different wattage are buried with a predetermined insulation distance secured. ing. An electrical outlet terminal plate 3 made of 5US430 is connected to each heater element 2 by spot welding.

When using the planar heater having the above structure as a heating source for an electric bot, when boiling water, the heater element 2 on the high-wattage 6 energized, and after boiling,
If you want to keep hot water warm, connect it through the electrical outlet terminal board 3.
It is sufficient to energize the heater element 2 on the low wattage side.

In addition, in the above embodiment, the heater element 2 is
Although the explanation has been made on the case where heater elements are buried, the present invention is not particularly limited to this, and in cases where it is not possible to obtain a resistance value in the electrical space, more heater elements may be buried.

In addition, the heater element 2 is made of smooth mesh 5US43.
0 was used, but this is not particularly limited to this, and any sheet-like metal foil that can be embedded may be used.

Furthermore, although the electrical outlet terminal plates 3 are oriented in the same direction in the embodiment, they are not particularly limited to this.

Effects of the Invention As is clear from the above description, according to the present invention, heater elements made of two or more sheet-like metal foils are laminated and buried in six vanes of insulating mica. Since a predetermined insulating distance is provided between each heater element, it is possible to embed two or more heating elements of different wattage in the electric space, and it is also possible to use a planar heater with excellent temperature distribution. It is something that can be provided.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a planar heater showing an embodiment of the present invention;
FIG. 2 is a sectional view of the flush heater, FIG. 3 is a front view of a heater element in the flush heater, and FIG. 4 is a perspective view of an electrical outlet terminal plate in the flush heater. 1... Insulating mica, 2... Heater element. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 4
Figure 1 Electric control board

Claims (1)

[Claims] Heater elements made of two or more sheet-like metal foils are laminated and embedded in insulating mica, and a predetermined insulation distance is provided between each of the heater elements. heater.