JPS6139216Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an electric oven with a heat retention device.

Conventionally, this type of electric oven has rod-shaped heaters and a lower heater on the upper and lower sides of the shelf inside the inner box, and after heating the food on the shelf with the upper and lower heaters, Heat is maintained by switching heater power to heat-retaining power, and for this purpose, the upper and lower heaters were connected from parallel to series to obtain heat-retaining power. Therefore, it is difficult to appropriately select the heat-retaining power, and there is a drawback that heating unevenness occurs due to the rod-shaped heater.

The present invention has been made in connection with the above, and an object of the present invention is to obtain an electric oven with a heat-retaining device that can obtain appropriate heat-retaining power without uneven heating. To achieve this purpose, a rod-shaped heat-retaining heater is installed parallel to the lower side of the lower heater.

An embodiment of the present invention will be described below with reference to the drawings.

1 is the outer box of the electric oven, 2 is the door, 3 is the inner box forming the heating chamber 4, and 5 is the internal shelf for storing food 6
It is intended to carry the following information. 7 and 8 are rod-shaped upper and lower heaters installed on the upper and lower sides of the shelf 5, respectively.
Consists of 450W and 400W quartz tube heaters. 9 is
This insulating heater consists of an 80W quartz tube heater and is installed parallel to the lower side of the lower heater 8. 11
is a known switch with a thermostat. Their attachment means may be similar to conventionally known means.
As shown in FIG. 2, connect one end of each of the upper heater 7, lower heater 8, and insulation heater 9 to one pole of the plug 10, and connect the other ends of the heaters 7 and 8 to the heating side pole 12 of the switch 11. , the other end of the heater 9 is connected to the heat retention side pole 13 of the switch 11, and the fixed pole 14 of the switch 11 is connected to the other pole of the plug 10.

The operation of this embodiment is to place the food 6 on the shelf 5 and the heating chamber 4.
Put it in. Next, when the switch 11 is turned on to the heating side pole 12, the upper and lower heaters 7 and 8 are energized and heating begins. At the end of heating, the switch 11 is switched to the heat retention side pole 13 by the action of the thermostat, and the heat retention heater 9 begins to generate heat. At this time, the heat retention heater 9
Since the lower heater 8 is positioned directly above and in parallel with the food 6, the strongest infrared rays from the heater 9 are blocked, and heat radiation to the food 6 becomes uniform. The calorific value for heat retention can be appropriately selected regardless of the calorific value of the upper and lower heaters 8.

As described above, according to the present invention, it is possible to keep food at a uniform temperature even with a rod-shaped heat retention heater, and its power can be appropriately selected to suit the amount of food, and it can also be heated from the bottom side. Therefore, less power is required.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of an electric oven with a heat retaining device according to an embodiment of the present invention, and FIG. 2 is an electrical wiring diagram thereof. 3...Inner box, 5...Shelf, 7...Top heater, 8
...Lower heater, 9...Warmth heater.

Claims (1)

[Scope of utility model registration request] In an electric oven with a heat retention device, in which rod-shaped upper heaters 7 and lower heaters 8 are provided on the upper and lower sides of a shelf 5 inside an inner box, a rod-shaped heat insulation heater 9 is provided parallel to the lower side of the lower heater 8. An electric oven with a heat retention device.