JPS61271774A - Heater unit - 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 is an electric heating device for cooking, in particular, a heating plate placed on a heating wire such as a nichrome wire forms a heating surface, and a cooking pot or the like is placed on this heating surface. This invention relates to a heater unit for an electric heater for cooking.

2. Description of the Related Art A conventional heater unit of this type is known from, for example, the Japanese Patent Publication No. 1983-
As shown in Publication No. 294eS4, it had a configuration as shown in FIG. That is, 1 is a metal outer plate, 2 is a microporous heat insulating material, and 3 is a disk on which a heating wire 4 is placed, which is made of a thin heat insulating material. Reference numeral 6 denotes a heating wire 4f: a fixing fitting for fixing the heating wire, 6 a thin ring made of a heat insulating material, and a heat-resistant cover 7 made of ceramic glass or the like placed on top of the ring 6.

Problems to be Solved by the Invention However, in such a conventional configuration, since the heat-resistant cover 7 is not fixed, there is a risk that it may come off due to external force such as vibration. In addition, there was a problem in that it was difficult to use as a heater unit because the means for fixing each component and attaching it to a product were insufficient.

The present invention solves these problems and is safe and
It is also an object of the present invention to provide a heater unit that can be streamlined in terms of assembly workability.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a heater case on a ceramic plate on the bottom of a dish-shaped heater case made of ceramic or metal and having a through hole in the center. A heater base with a coil arranged thereon is placed, and an insulating material with good thermal conductivity is filled on the heater base in the heater case,
The upper part of the heater case is covered with a metal heating plate whose surface is coated with ceramic, and the sensor case and the sensor are inserted into the through hole provided in the center of the heating plate, and the sensor case and the sensor are inserted into the upper opening of the sensor case. The flange part of the sensor case is placed in contact with the periphery of the through hole provided in the center of the heating plate.On the other hand, the tightening part provided at the bottom of the sensor case is attached with a screw to tighten the metal fitting. For this tightening, the tip of the screw is brought into contact with the back side around the through hole provided in the heater case, and the heating plate and the heater case are clamped and fixed between the 7 langes of the sensor case and the tip of the screw. It is.

Effect With this configuration, the heating plate, which is the heating surface, will not come off, and the insulating material inside the heater case and the heater base are sandwiched and fixed between the heater case and the heating plate, and the sensor case is fixed. The fixing and fixing of the heating plate and the heater case can be done simultaneously by tightening the screws, making it possible to obtain a heater unit that is streamlined in terms of assembly workability.

EXAMPLE Hereinafter, an example of the present invention will be explained based on FIGS. 1 and 2. In the figure, 11 is a dish-shaped heater case made of ceramic or metal, and a through hole 111L is provided in the center.

Reference numeral 12 denotes a heater base formed by disposing a heater coil 14t on a ceramic plate 13. A through hole 121L having the same size as the through hole 11a is provided in the center of the heater base 12. Heater case 1
It is placed on the bottom of 1. Reference numeral 16 denotes an insulating material with good thermal conductivity, and this insulating material 16 efficiently transfers the heat generated by the heater coil 14 and provides electrical insulation.

Reference numeral 16 denotes a metal heating plate, and the surface of this heating plate is coated with ceramic or heat-resistant paint for corrosion prevention. By covering the upper part of the heater case 11 with the heating plate 16, the insulating material 16 and the heater base 12 are fixed. In addition, heating plate 1
At the center of 6 is a through hole 161 equivalent to the through hole 111L.
L is provided. 17 is a sensor that detects the temperature of the bottom surface of the cooking pot, and 18 is a sensor case that holds the sensor 17. This sensor case 1B has a substantially cylindrical shape and has been heat-resistant treated. A 7279 part 181L is provided in the upper opening, and when this sensor case 18 is inserted into the through hole 16&, 111L, a 7 flange part 181k is formed around the through hole 16a provided in the center of the heating plate 16. come into contact with After the sensor case 18 is inserted, the claw 18b1r provided at the bottom of the sensor case 18 is tightened by the through hole 1 provided at the bottom of the metal fitting 19.
After inserting into 91L, the metal fitting 19 is attached for tightening by bending. And this tightening is done by metal fitting 19.
The upper end flange portion 19b is integrally provided with a mounting portion 190 for assembling into equipment and a screw mounting portion 19 (1) for tightening. The screw is attached to the part 190, and the tip of the screw 2o comes into contact with the back side around the through hole 111L provided in the heater case 11. The heater case 11 and the heating plate 16 are clamped and fixed between the flange portion 1B& of the sensor case 18 and the tip of the tightening screw 20. 21 is the sensor 17t - a coil spring that always urges upward. It is.

Note that the heating plate 16 may be made of a ceramic plate.

Further, FIG. 3 shows another embodiment, in which a notch is provided in the side surface of the sensor case 18, and a member 180'i constituted by this notch is raised during assembly.
By applying the sensor case 18 between the cut and raised protrusions 11b provided on the heater case 11, the sensor case 18 can be fixed without using the screws 201 for tightening. In addition, by using a stainless steel plate as the material of the sensor case 18, the springiness of the material can be utilized, making it more effective than 5.

Effects of the Invention As described above, according to the present invention, after the heater case and the heating plate constituting the heater unit are sandwiched between the 72 part of the sensor case and the tip of the screw, the tightening is performed. Since it is fixed by tightening the screws, the heater case and heating plate that make up the heater unit can be fixed and the sensor case can be fixed at the same time. With this configuration, the heater unit can be fixed by tightening the screws. In addition to eliminating the need for components to be disassembled,
It is possible to obtain a heater unit that is streamlined in terms of assembly workability.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a heater unit showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of the same heater unit y), and FIG. 4
The figure is a sectional view showing a conventional heater unit. 11... Heater case, 11a... Through hole. 12... Heater base, 13... Ceramic plate, 14... Heater coil, 15...
...Insulating material, 16...Heating plate, 16 &...
...Through hole, 17...Sensor, 18...
...Sensor case, 18a...Flange part, 19...Tighten the metal fitting, 19d...Tighten the screw mounting part, 2o...Tighten Comes with screws. Name of agent: Patent attorney Toshi Nakao (1 person: 12)
-11 Heeg Head 16--~ Storage, processing Figure 3, Figure B4

Claims (1)

[Claims] A dish-shaped heater case made of ceramic or metal and having a through hole in the center; a heater base placed on the bottom of the heater case and having a heater coil disposed on a ceramic plate; an insulating material with good thermal conductivity filled on the heater base; a metal heating plate that covers the upper part of the heater case and whose surface is coated with ceramic; a through hole provided in the center of the heating plate; It has a sensor case and a sensor that are inserted into a through hole provided in the heater case, and the sensor case has a substantially cylindrical shape, and a flange portion is provided at the upper opening thereof, and a flange portion is provided at the center of the heating plate. The flange portion is brought into contact with the periphery of the provided through hole, a tightening screw is attached to a tightening screw attachment portion provided on a tightening fitting provided at the bottom of the sensor case, and a tip of the tightening screw is attached to the heater case. A heater unit in which a heating plate and a heater case are sandwiched and fixed by the flange of the sensor case and the tip of a tightening screw, in contact with the back side around the through hole.