JPS63178490A - Radio frequency heater with electric 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 the Invention The present invention relates to an electric heating device for a so-called toaster range, which heats foods with high frequency and toasts bread.

2. Description of the Related Art In general, a conventional toaster range is provided with quartz tube heaters 2 each containing a heat-resistant vibrator 21LK and a coil heater 2b at the top and bottom of a heating chamber 1, as shown in FIG. When baking food 3 such as bread, a wire mesh 4 is provided in the heating chamber, and the food such as bread 3 is placed on the wire mesh and baked. In addition, during high-frequency heating such as reheating food, the food 3 is placed on the wire mesh 4, or a saucer exclusively for high-frequency heating is installed in the heating chamber, and the food is replaced.

Problems to be Solved by the Invention However, in a toaster range with such a configuration, the quartz tube heater 2 installed below the heating chamber 1 is vulnerable to mechanical shock, so there is a risk of an accident where the user accidentally breaks it. There were many. In addition, there is a hole 1 at the bottom of the heating chamber 1 that is large enough to prevent radio waves from passing through.
A is provided in large numbers so that food waste and the like fall through the holes into the food waste receiving tray 6, but since the diameter of the holes is small, they tend to become clogged with dirt and the like, making cleaning difficult.

Furthermore, in order to prevent uneven heating of the food 3, the wire mesh 4 needs to be set at a height approximately halfway between the upper and lower quartz tube heaters 2, resulting in an inefficient heating chamber with small storage space. was.

The present invention solves these conventional problems, and provides a toaster range that has a simple configuration, improves heating unevenness and heating efficiency, is easy to clean, and is robust. .

Means for Solving the Problems The toaster range of the present invention is provided with electric heating devices above and below the heating chamber, and at least the electric heating device provided below is made by sealing heating wires arranged in a plane in a sandwich shape with a heat-resistant insulator. This is a planar heater with a large number of holes provided on the plane of the heater through which high-frequency power can pass.

Function: Since the toaster range of the present invention has a planar electric heating device at the bottom, there is no uneven heating even when food is placed close to the toaster range, and as a result, a large storage space for food can be used. In addition, this planar heater has many holes, and food scraps such as bread crumbs fall downward through these holes, so the food scraps do not burn or emit smoke. Furthermore, when performing high-frequency heating, if the food is placed directly on the planar heater and heated, the high-frequency power is absorbed into the food through the holes of the planar heater, allowing uniform heating from all directions. In other words, there is no need for a wire mesh for electric heating or a special saucer for high-frequency heating, resulting in an extremely clean interior.

Of course, the outer skin of the sheet heater is covered with a metal plate, so it is sturdy and there is no chance of it breaking during use. Furthermore, if this planar heater is made removable from the heating chamber, cleaning becomes even easier.

Example Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, a quartz tube heater 2 having a heat-resistant pipe 21L and a coil heater 2b is provided at the inner upper part of the heating chamber 1. On the other hand, a planar heater 6 is provided in the inner lower part of the heating chamber 1 and is detachably attached to the heating chamber 1 . When baking food 3 such as bread, it is placed directly on the planar motor 6 and baked. As shown in FIGS. 2 and 3, this planar heater 6 consists of a heating wire 6b sandwiched between heat-resistant insulators 61 and a metallic flat plate 6.
It is sealed with C. Furthermore, this planar heater 6 has many long holes 6d through which high frequency power can pass.
Food scraps and the like fall downward through this hole and accumulate in the food scraps receiving tray 6. Further, the planar heater 6 is provided with a large number of upward protrusions 66f to maintain an appropriate distance from the food 3. 7 is a door, and 8 is a waveguide for guiding high frequency power into the heating chamber.

The configuration for electric heating has been explained above, but food is heated by placing it directly on the planar heater 6 in exactly the same way during high-frequency heating, and the food can be heated evenly from above and below. The saucer is completely unknown at any time of heating.

Effects of the Invention As described above, the toaster range of the present invention has a lower heater having a planar shape, and this planar heater has holes through which high-frequency power can pass through, so that it has many effects such as the following. It is something that brings.

(1) There is no uneven heating even when food is brought close to the lower heater.
And heating efficiency increases.

(2) Food can be placed closer to the lower heater, increasing the storage space for food.

(3) Food waste will not accumulate on the heater and will not emit smoke.

(4) Food can be placed directly on the planar heater both during high-frequency heating and electric heating, so there is no need for a tray to place the food on, making it easy to use.
Significant cost reductions are possible.

(＠ The planar heater can be constructed robustly and will not break during use.

(6) Since the holes in the planar heater can be made large, they do not get clogged and are extremely easy to clean.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a perspective view showing a coplanar heater, Fig. 3 is an enlarged sectional view of main parts of the coplanar heater, and Fig. 4 is a conventional FIG. 2 is a sectional view showing a toaster range. 1... Heating chamber, 3... Food, 6a...
...Heat-resistant insulator, 6b... Heating wire, 6d.
...hole. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (2)

[Claims] (1) It has a heating chamber for storing food, a high-frequency generating means for high-frequency heating the food, and an electric heating device for electrically heating the food, and the electric heating device is arranged vertically in the heating chamber. The electrical heating device installed below is a planar heater made of heating wires sealed in a sandwich-like manner with a heat-resistant insulator, and has a large number of holes on the plane. A high-frequency heating device with an electric heating device. (2) The high-frequency heating device with an electric heating device according to claim 1, wherein the holes of the planar heater provided below the heating chamber are of a size that allows high-frequency power to pass through.