JPH0386119A - Heating cooker - Google Patents

Abstract

PURPOSE:To equalize the temperature distribution of a cooking plate by forming a projecting part for abutting on a non-heating part of a sheathed heater, in the part being the lower face of the cooking plate and corresponding to the upper face of the non-heating part of the sheathed heater. CONSTITUTION:A projecting part 10 for abutting on a non-heating part 4a of a sheathed heater is formed in the part being the lower face of a cooking plate 2 and corresponding to the upper face of the non-heating part 4a of the sheathed heater. When the sheathed heater 4 of this cooker is energized, the sheathed heater 4 is heated and a heating part 4b of the sheathed heater 4 exceeds 500 deg.C, and the cooking plate 2 is heated by radiation heat. Also, the non-heating part 4a of the sheathed heater also becomes a temperature exceeding 250 deg.C by conduction heat from the heating part 4b. As a result, heat of the non-heating part 4a is transmitted through the projecting part 10 which is abutting on the non-heating part 4a and reaches the upper face of the non-heating part 4a of the cooking plate 2, and allows a temperature of its part to rise. That is, the part in which radiation heat transmission by the sheathed heater 4 of the cooking plate 2 is weak is compensated by conduction heat through the projecting part 10, a low temperature part of the cooking plate 2 is gone, and its temperature distribution is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an improvement in a cooking utensil equipped with a cooking plate heated by a heater.

[Prior Art] A heating cooker equipped with a cooking plate heated by a heater that can be placed on a dining table or the like to heat and keep food warm while eating is widely used in general households.

Figure 2 is a perspective view of the main parts of such a heating cooker.
In the figure, (L) is the heater part, (2) is the cooking plate, (3)
is a lid, (4) is a sheath heater, and (5) is a supporting metal fitting thereof. Fig. 3(a) is a plan view of the heater part (L), and Fig. 3(b) is a sectional view of the heater part (L) and cooking plate (2>, where (2a) is a low temperature part, and (4a) is a sectional view of the heater part (L)). The non-heat generating part, (6> is the guard part, (7> is the reflective plate, (8) is the automatic temperature controller, and (9) is the equipment to attach the reflective plate (7) to the guard part (6). be.

In the figure, the heater part (1) has a reflector (7) arranged inside the guard part (6), and a sheath heater (4) on the top surface of the reflector (7).
), and a cooking plate (2
> Automatic temperature regulator (8
).

As is well known, the cooking plate (2) is a surface on which the desired cooking is performed, and is generally made of a die-cast aluminum product in order to obtain good heating.The heating surface is treated with Teflon to prevent the food from burning. is prevented.

The lid (3) is used to cover the cooking plate (2) for various foods, or forms a cover when the cooking device is not in use.

In addition, a cord reel type power cord is attached to the power cord, and when not in use, it is wound up and stored on a reel (not shown) provided at the bottom of the guard part (6), and when in use, it is rolled up and stored on a reel (not shown) provided at the bottom of the guard part (6). The cord can be used by pulling out the desired length from the cord drawer.

Furthermore, although not shown in the figure, conventional heating cookers have the automatic temperature regulator (8) configured to be detachable from the guard part (6), or the automatic temperature regulator (8) without a reel type power cord. 〉 are used.

When using the heating cooker, when the cooking plate (2) is placed on the heater part (1) and the sheath heater (4> is energized), the temperature of the sheath heater (4) rises and the cooking plate (2> Since the heating starts from the bottom, meat, vegetables, etc. placed on the cooking plate (2) are cooked.

[Problems to be Solved by the Invention] By the way, in the heating cooker shown in FIG. 3, in order to prevent the part that houses the sheath heater (4) from being overheated by the sheath heater (4) and causing an unexpected accident, the heating cooker shown in FIG. A part is made into a non-heat generating part (4a).

Therefore, the portion (2a) of the cooking plate (2) that corresponds to the upper surface of this non-heat generating part (4a) does not have enough radiation heat transfer amount by the sheath heater (4), and the temperature of the plate does not rise. The temperature distribution on the top surface becomes uneven, which can cause inconvenience in cooking, which has been a problem for some time.

The present invention has been made to solve the above-mentioned problems of conventional cooking appliances, and aims to provide a heating cooking appliance with uniform temperature distribution on a cooking plate.

[Means for Solving the Problems] In order to achieve the above object, in the heating cooker according to the present invention, a non-heat generating portion of the sheath heater is provided on the lower surface of the cooking plate and in a portion corresponding to the upper surface of the non-heat generating portion of the sheath heater. A protrusion was formed to abut the part.

[Function] The heat of the sheath heater is conducted to the cooking plate via the protrusion and compensates for the lack of radiant heat transfer from the sheath heater, thereby eliminating uneven temperature distribution on the cooking plate.

[Embodiment of the Invention] Fig. 1 is a heating cooker showing an embodiment of the present invention, in which (a) is a plan view of the heater part, and (b) is a cross-sectional view of the heater part and the cooking plate. ) to (8) are the same or equivalent parts as those of a conventional cooking device, and (lO) is a protrusion.

As shown in the figure, the lower surface of the cooking plate (2),
In the part corresponding to the upper surface of the non-heat generating part (4a) of the sheath heater,
The protrusion (1) that comes into contact with the non-heat generating part (4a) of the sheath heater
0) is formed.

When the sheath heater (4) of the cooker configured as described above is energized, the sheath heater (4>) is heated and the heat generating part (4b> of the sheath heater (4) reaches 500°C or higher, which heats the cooking plate (2) by radiant heat. do.

Also, the non-heat generating part (4a) of the sheath heater is also the heat generating part (4b).
The temperature reaches 250°C or higher due to the conductive heat from the inside. As a result, the heat of the non-heat generating part (4a) of the sheath heater is transmitted through the protrusion (lO) that is in contact with the non-heat generating part (4a) of the sheath heater, and reaches the upper surface of the non-heat generating part (4a) of the cooking plate (2). In other words, the portion of the cooking plate (2) where the radiation heat transfer by the sheath heater (4) is weak is compensated for by the conduction heat through the protrusion (lO), and the temperature of the cooking plate (2) increases. The low temperature area is eliminated and the temperature distribution is improved.

[Effects of the Invention] The present invention forms a protrusion on the lower surface of the cooking plate of a cooking plate that is heated by a heater, and that comes into contact with the non-heat generating part of the sheath heater, thereby preventing insufficient radiant heat transfer from the sheath heater. By supplementing this with conductive heat, the temperature distribution on the cooking plate is improved, making cooking convenient.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a heating cooker which is an embodiment of the present invention, (a) is a plan view of the heater part, (b) is a sectional view of the heater part and cooking plate, and Fig. 2 is a diagram of the cooking utensil. FIG. 3 is an explanatory diagram of a conventional heating cooker, and FIG. 3 is a perspective view of the main parts, and FIG. 3A is a plan view of the heater section, and FIG. 3B is a sectional view of the heater section and the cooking plate. In the figure, (2) is a cooking plate, (4) is a sheath heater,
(4a) is the non-heat generating part, (4b) is the heat generating part, (10>
is a protrusion. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] A heater section including a reflector disposed inside a guard section and a heater disposed above the reflector, and a cooking plate placed on the top surface of the heater of the heater section. What is claimed is: 1. A heating cooking device comprising: a protrusion formed on a lower surface of the cooking plate, the protrusion coming into contact with a non-heat generating portion of the heater.