JPS58123688A - Heating element - 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 The present invention relates to a heating element for an electric heating appliance for heating liquids such as water, milk, and alcoholic beverages.

Conventionally, liquid heaters available on the market come in a wide variety of forms, and the containers that contain the liquid are also glass.

Available in a wide range of materials including metal and ceramics. In addition, various types of heating elements are used, including those in which the temperature of the liquid can be controlled by external operation. The general structure was generally as follows. In a bottomed container with an opening at the top, a liquid-tight underwater heating element or sheathed heater can be installed on the bottom of the container, a space heater can be strongly pressed from the bottom of the container, or a band shape can be placed around the bottom of the container. Space heaters were wound and tightened, and a hakama member was provided at the bottom of each container, and together with an electric circuit, a liquid heater was constructed. Particularly in the case of ceramic containers, attaching a heating element to the bottom or body of the container has extremely poor thermal efficiency, and it is difficult as a technical method to guarantee the correlation between the liquid temperature and the temperature controller. Therefore, many ceramic liquid heaters on the market do not have a means to control the liquid temperature and simply heat the liquid, and the heating element used is the above-mentioned underwater heating element or sheathed heater. . In addition, underwater heating elements and sheathed heaters are generally expensive as heating elements, and have the disadvantage that cleaning between the bottom of the container and the heating element is difficult.

The present invention provides a heating element that improves the temperature correlation between the liquid temperature and the controller regardless of the material of the container.Examples of the present invention will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a heating board formed by winding a heating wire around an insulating substrate and insulating plates laminated from both sides of the heating wire. A heat diffusion plate 2 made of a metal plate with good thermal conductivity and having a permeable circumferential side is installed in close contact with the bottom of the heat generating plate 1 (2)≠old (8). The central part is made to protrude upward, and the outer peripheral part and the central part are fixedly connected to each other by a heat transfer member 3 and a back member 4, which are attached to the outer circumferential side edges. Reference numeral 5 denotes a mounting bracket fixedly connected to the lower center of the heat transfer member 3.

Reference numeral 6 denotes a temperature controller, which is connected to the mounting bracket 5 via a sensing table 7 made of metal with good thermal conductivity, and an operating lever 8 of the temperature controller 6 is led out to the outside of the device. Note that the central portions of the heat diffusion plate 2 and the back member 4 are placed in close contact with the central protrusion of the heat transfer member 3, and are extended as close to the sensing table 7 as possible.

Further, a lead wire i is led out from the heat generating panel 1 and connected to a predetermined electric circuit.

9 is a container that is open at the top and has a hole in the center of the bottom, and a backing 10 is attached to the outer edge of the container.
1, it is attached to the hole with strong pressure. An abbreviated locking portion 12 is provided on the lower surface of the container 9, and a mounting plate 13 having a substantially inverted-shape locking portion is engaged and fixed to the locking portion 12. A hakama member 14 is fixedly connected to this mounting plate 13, and the hakama member 14 is arranged at the lower part of the container. 15 is a heat shield plate that covers the lower part of the back member 4.

In the above configuration, when a predetermined liquid to be heated is placed in the container 9 and electricity is started, the temperature of the heating wire of the heating plate 1 rises, conducts to the heat transfer member 3, and raises the temperature of the liquid. At the same time, the heat from the heat generating plate 1 is conducted to the heat diffusion plate 2, immediately conducted to the outer circumferential side and the back member 4, and then transferred to the outer circumferential side of the heat transfer member 3, where it is used to heat the liquid. In other words, the amount of heat is made uniform throughout the heating element and used to raise the temperature of the liquid. The liquid temperature is close to the heat transfer member 3! The temperature is transmitted to the temperature controller 6 through the coupled sensing table 7 with good thermal conductivity, and in combination with the effect of the heat shield plate 15, the desired temperature can be easily controlled and external operation is possible. In addition, even in the case of dry cooking due to abnormal or incorrect use, heat is quickly conducted to the center of the heat transfer member 3 by the action of the heat diffusion plate 2 and the back member 4, and is transferred to the controller 6 through the sensing table 7. communication and guarantee safety. Further, discoloration due to temperature rise on the surface of the heat transfer member 3 is also advantageous because heat is conducted and diffused to the outer peripheral edge. In addition, similar to the above-mentioned dry-firing, even in the case of water-reduced dry-firing during use, the center part of the heat transfer member 3 protrudes upward, so as water reduction progresses, the central protrusion is exposed first, The heat from the heat diffusion plate 2 and the back member 4 is immediately conducted to the temperature controller 6 through the sensing table 7.

In addition, when the heating wire temperature rises, the heat diffusion plate 2
Since the heat is transmitted to the back member 4, it has a remarkable effect on lowering the temperature of the heating wire, and as a result, the durability of the heating element can be extended.

Furthermore, if a heating element like the one in the above embodiment is used, the container 9
It is possible to provide a low-cost liquid heater that is extremely easy to clean, has high liquid temperature control accuracy, guarantees safety, and has high durability.

As is clear from the above explanation, according to the present invention, there is a high temperature correlation between the liquid temperature and the temperature controller, and the control accuracy of the liquid temperature can be increased, which has great industrial value. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an electric heater using a heating element showing an embodiment of the present invention, and FIG. 2 is a sectional view of the same heating element. 1...Heating plate, 2...Heat diffusion plate, 3.
... Heat transfer member, 4 ... Back member, 5 ...
...Mounting bracket, 6...Temperature controller.

Claims (1)

[Claims] A heating element in which a through hole is formed at the center of each of a diffusion plate and a back member, and a mounting bracket for a temperature controller is coupled to a lower center surface of the heat transfer member by passing through the through hole.