JPS587595Y2 - Electric oven heater support device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a support device for a heater that emits an unsealed hot wire and is suspended in the roasting chamber of an electric oven.

Thermal energy is transferred from the heat source to the heated food in this type of electric oven mainly through air as a medium.

That is, there are heat conduction including air convection, such as a sheathed heater, and heat conduction generated from a heat source, such as a quartz tube heater with a built-in resistance heating wire.

If food is heated using a heat source that mainly uses thermal conduction, the heating rate will decrease, but since the surrounding temperature of the heated food can be maintained at the required temperature, the temperature of the surface and center of the heated food will decrease. It can be heated with less difference.

Furthermore, if the food is heated by a heat source that mainly emits the above-mentioned opening wire, only the surface of the food to be heated that is hit by the heating wire can be rapidly heated.

In particular, in the latter case, in order to efficiently irradiate the food to be heated with heat rays, it is desirable that there be no obstructions over the entire outer surface of the quartz tube heater that serves as the heat source.

However, in the past, as shown in FIG. 3, a quartz tube heater 3 suspended from the side wall 2 forming the roasting chamber 1 has cylindrical insulators 4 attached to both ends of the heater engaged with the side wall 2 of the roasting chamber 1. Both ends 6, 6 of the tube wall 5 of the quartz tube heater 3
was recessed into the concave portion 7 of the cylindrical insulator 4.

Therefore, it is not possible to emit the unsealing hot wire from both ends of the quartz tube heater 3 which emit the unsealing hot wire, and as a result, both ends of the food to be heated cannot be roasted, which is not preferable.

The present invention has been devised in view of these drawbacks, and one embodiment thereof will be described below with reference to the drawings.

Reference numeral 10 denotes an electric oven main body, and a door body 11 which can be opened and closed is pivotally attached to the front opening of the electric oven main body.

Reference numeral 12 denotes both side walls 14 constituting the roasting chamber 13 of the main body 10.
．． This is a quartz tube heater that is suspended across a hollow quartz tube 14, and a heat generating resistance wire 16 is stretched inside a hollow quartz tube 15.

Reference numeral 17 indicates through holes 18, 18 bored in the both side walls 14 and 14.
An insulator made of porcelain that engages with the inside of the quartz tube heater 12 and suspends the quartz tube heater 12 is inserted through the through hole 18 formed in the side wall 14 to expose the inside of the roasting chamber 13. A quartz tube holder 19 is formed, and the quartz tube holder is designed to hold both ends 20 and 20 of the quartz tube 15.
A plurality of holding pieces 21.21... are formed to extend, and both ends 20.20 of the quartz tube 15 are exposed between these holding pieces 21.21... There is.

That is, the unsealing heat rays irradiated from the quartz tube heater 12 are also caused to be applied from the quartz tube holding portion 19 of the insulator 17.

Reference numeral 22 denotes a net shelf member that is supported within the roasting chamber 13 and on which heated foods (not shown) are placed.

As described above, the heater support device of the present invention is constructed by engaging insulators attached to both ends of a quartz tube heater with through holes formed in both side walls of the roasting chamber. Since the quartz tube holding part of the insulator is composed of a plurality of holding pieces, the copper heat wire is emitted from almost the entire area of the quartz tube heater, and the whole area of the food to be heated can be roasted efficiently. You can obtain a practical device that requires less material, is lightweight, and can be manufactured at low cost.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of an electric oven equipped with the present device, FIG. 2 is an enlarged perspective view of the essential parts of the present device, and FIG. 3 is a conventional example corresponding to FIG. 2. 17... Insulator, 12... Quartz tube heater, 21... Holding piece.

Claims (1)

[Scope of utility model registration request] In an oven in which insulators attached to both ends of a quartz tube heater are engaged with through holes drilled in both side walls of a roasting chamber, the quartz tube holding portion of the insulator exposed inside the roasting chamber is A heater support device for an electric oven characterized by comprising a plurality of holding pieces.