JPS624807Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heater device used in an electric cooker such as a toaster oven.

An infrared heating type tube heater device is used in an electric cooker. A conventional tubular heater device is formed by inserting a heating wire into a quartz tube and attaching insulators with terminals attached to both ends of the quartz tube.
The insulator has a fitting tube portion that fits onto the outer surface of the end of the quartz tube, and is attached to both side walls of the cooking chamber of the electric cooking device. By the way, since this fitting cylinder part has a simple cylindrical shape, the heat rays from the heat generating wire facing the fitted part cannot be effectively utilized. Therefore, when used in a toaster oven, heat does not effectively act directly under the insulator, resulting in the problem of uneven baking when baking bread or the like. Particularly, in a toaster oven of the type in which a heating unit having a heater device moves up and down, the heating unit must be placed quite far away from the bread, etc. in order to prevent uneven toasting of the bread, etc., which is inefficient.

The present invention was proposed under the above circumstances, and its purpose is to make the heat rays from the heating wire effectively act on the food to be cooked, thereby achieving heating efficiency with a simple structure and at low cost. Another object of the present invention is to provide a heater device for an electric cooker that can improve the thermal efficiency of the electric cooker.

That is, the present invention is a heater device that can be installed without penetrating the cooking chamber by storing the insulators attached to both ends in the cooking chamber of an electric cooker. By providing a notch in the fitting cylinder part of the insulator that fits on the outer surface of the insulator at the part facing the food to be cooked, the heat rays from the heating wire part facing the fitting cylinder part can be applied to the food to be cooked. This is a heater device for an electric cooker characterized by:

The present invention will be described below with reference to an embodiment shown in the drawings.

In FIG. 1, reference numeral 1 denotes an inner casing, the outside of which is covered by an outer casing 2, and the front openings of each of these casings 1 and 2 can be opened and closed by a door 3. A heating unit 4 is disposed in the upper part of the inner casing 1, and a cooking chamber 5 is defined by this and the inner casing 1. A cooking object mounting body 6 such as a grill is provided in the cooking chamber 5.
This is moved back and forth via an interlocking link 7 as the door 3 is opened and closed. The heating unit 4 is formed by attaching heater devices 9, 9 according to an embodiment of the present invention to a reflecting plate 8, and is supported by a lifting mechanism (not shown) so as to be movable up and down.

The reflecting plate 8 is made of a thin metal plate, and as shown in FIG. 2, mounting holes 10 are formed at both left and right ends (only one is shown), and the mounting holes
A pair of engaging claws 11, 11, which can be bent in the thickness direction, are formed on the edge of the hole so as to face each other.

The heater device 9 is installed in the cooking chamber 5 together with the insulator described later without penetrating the cooking chamber 5, and as shown in FIG. 2 and FIG. Line 13, left and right insulators 1
4. Left and right terminals 15 and tightening members 16, 17
It is formed by The tubular body 12 is made of an infrared transparent material, and in this embodiment, it is a quartz tube, into which the heating wire 13 is inserted in the form of a coil. The insulator 14 has a fitting cylindrical portion 18, and this cylindrical portion 18 is connected to the tube body 1.
It is attached to the tube body 14 by fitting onto the outer surface of the end portion of the tube body 14. Note that an adhesive (not shown) is applied to this fitting portion. This fitting cylindrical portion 18 includes
A notch 19 is provided in the portion facing the food to be cooked, that is, in this embodiment, the lower portion. Further, the insulator 14 is provided with a housing groove 20 in which the terminal 15 is projected in a direction perpendicular to the axial direction of the tube body 10 and is housed therein. A screw or the like is used for the terminal 15, to which the end of the heating wire 13 is connected, and by attaching the tightening members 16 and 17 to the protruding portion from the storage groove 20, the terminal can be secured. 15 is fixed to the insulator 14. Furthermore, the insulator 14 has engagement grooves 21, 21 on both sides thereof. After the heater device 9 having the above configuration is partially inserted into the mounting hole 10, the engaging claws 11, 11
with a screwdriver etc. and insert into the engagement grooves 21, 2.
1, it is attached to the flat portion of the reflector plate 8.

In the figure, reference numeral 22 denotes a wiring member made of a metal plate for connecting the heater devices 9, 9 in series, and this is fixed to the terminal 15 with another tightening nut. Moreover, 23 is another heater device arranged at the lower part of the cooking chamber 5.

In the above embodiment, the terminal is provided in a direction perpendicular to the axial direction of the tube, but the present invention can also be implemented in a heater device that is provided so as to protrude from the insulator along the axial direction of the tube. The present invention can also be implemented in a heater device for an electric cooker with a fixed heating unit.
In addition, when implementing the present invention, the specific structure, shape, position, etc. of the tube, heating wire, insulator, fitting cylindrical part, notch, terminal, etc. shall be Of course, the present invention can be implemented without being restricted to the above embodiment.

The gist of the present invention described above is the configuration described in the claims of the above-mentioned utility model registration. Therefore,
According to the present invention, the heating wire from the part facing the fitting cylindrical part of the heating wire is removed by a very simple structure of just providing a notch in the part of the fitting cylindrical part of the insulator that faces the food to be cooked. , can be applied to the opposite cooking object through the notch. Therefore,
Heating efficiency can be improved by using the heat rays from the heating wire. Therefore, when using the heater device of the present invention in an electric cooker equipped with a vertically movable heating unit to bake bread, etc., the heating unit is brought closer to the bread, etc., and the cooking process is therefore improved. Even if the time is shortened, uneven baking of bread etc. can be prevented, which is particularly suitable. In addition, since the heater device of the present invention is installed together with the insulators at both ends in the cooking chamber of the electric cooker without penetrating the cooking chamber, its overall length is short and the cost is low, and the heater device does not penetrate the cooking chamber. This prevents heat from the cooking chamber from escaping to the outside, improving heat efficiency.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side view showing a part of the toaster oven in cross section, Fig. 2 is an exploded perspective view of the heater device mounting part, and Fig. 3 is a cross section of the end of the heater device. FIG. 4 is a front view of the insulator, and FIG. 5 is a side view of the insulator. 9... Heater device, 12... Tube body, 13... Insulator, 14... Terminal, 18... Fitting cylindrical part, 19...
...Notch.

Claims (1)

[Scope of utility model registration request] A heating wire is inserted into the infrared transparent tube, and insulators each having a fitting cylindrical portion that fits on the outer surface of this end are attached to both ends of the tube. In the heater device, which is formed by attaching a terminal connected to the insulator, and which is installed together with the insulator in the cooking chamber of the electric cooker without penetrating the cooking chamber, the insulator is connected to the object to be cooked in the fitting cylindrical portion of the insulator. A heater device for an electric cooker characterized by having notches in opposing parts.