JPH08468A - Heating plate of cooking means - Google Patents

Abstract

PURPOSE:To prevent an influence from being exerted on the rate of increase of the temperature of a plate upon first electric current feed when a heat capacity is increased by making the thickness of a central part on the underside of a cooking plate larger than that of its peripheral edge part. CONSTITUTION:Many shallow recessed spherical dimples 5 are scattered on the central part 3 on the underside of a cooking plate 1 except a part in contact with a heater 4, so that the decrease of heat capacity is suppressed and the area receiving reflected heat is increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking plate for cookware such as a hot plate.

[0002]

2. Description of the Related Art In a cooking plate of a cooking utensil, it is possible to increase the heat capacity of the plate by increasing the thickness of the bottom surface of the plate in order to reduce the temperature drop of the plate when the food is placed on the plate during heating. Has been done.

[0003]

However, the thicker the bottom surface of the plate, the slower the temperature rising rate of the plate at the beginning of energization and the longer the waiting time for cooking.

Therefore, an object of the present invention is to provide a cooking plate which does not affect the temperature rising rate in the initial stage of energization even if the wall thickness is increased.

[0005]

In order to solve the above-mentioned problems, the present invention is a cooking utensil in which the thickness of the central portion surrounded by the peripheral portion of the back surface of the plate is made larger than the thickness of the peripheral portion. In this cooking plate, a large number of shallow concave spherical dimples are formed in a dotted pattern on the surface of the lower surface of the central portion excluding the heater contact portion.

[0006]

Since the thickness between the dimples is left as it is and the dimples themselves are shallow concave spherical surfaces, the decrease in heat capacity due to the formation of the dimples can be suppressed, while each dimple is located below the heater. The heat shield plate has an effect of increasing the surface area for receiving the heat reflected from the heat shield plate.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the back side of a cooking plate used for a hot plate. The central portion 3 surrounded by the peripheral edge portion 2 on the back surface of the plate 1 is a portion where the temperature rises, and the front surface side of the plate 1 serves as a main cooking portion.

As shown in FIGS. 2 and 3, the central portion 3 has a wall thickness of about 6 mm, which protrudes one step to increase the heat capacity of this portion. A heater 4 is in contact with the central portion 3 at a position indicated by a chain double-dashed line in FIG.

A large number of dimples 5 are formed in a scattered manner in the central portion 3 except for the contact portion of the heater 4. The dimple 5 has a shallow concave spherical surface with a diameter of 20 mm and a maximum depth of about 2 mm, and the average number is about 13 per 10 cm ² .

The cooking plate of the embodiment is as described above, and when the plate 1 is assembled into a cooking utensil, the back surface thereof is placed on the heater 4 and the heater 4 as shown in FIGS. 2 and 3. It faces the heat shield plate 6 below 4 with a certain distance.

The plate 1 is directly heated by the heat of the heater 4, and is also heated by the heat reflected from the heat shield plate 6 as shown by the arrow in FIG. 3, and the concave spherical surface of the dimple 5 also serves as the heat receiving surface. .

[0012]

As described above, according to the present invention, since the dimples are shallow concave spherical surfaces and are formed in a scattered shape,
While not substantially reducing the heat capacity of the plate, the concave spherical surface of each dimple increases the heat receiving area of reflected heat, which has the effect of increasing the temperature rising speed during initial energization.

Further, since the dimples have a shallow concave spherical surface, it is convenient that the dirt can be easily wiped off at the time of cleaning.

[Brief description of drawings]

FIG. 1 is a back view of a cooking plate according to an embodiment.

FIG. 2 is a partially omitted sectional view taken along line II-II of FIG.

FIG. 3 is a partially enlarged sectional view of FIG.

[Explanation of symbols]

 1 plate 2 peripheral part 3 central part 4 heater 5 dimples 6 heat shield plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Sanzo Oshima, 1-20-5 Tenma, Kita-ku, Osaka City, Zojirushi Mahobin Co., Ltd. (72) Inventor, Tokuaki Fujita 1-20-5, Tenma, Kita-ku, Osaka Issue Zojirushi Mahobin Co., Ltd. (72) Inventor Akira Nakanaka 1-20-5 Tenma, Kita-ku, Osaka City Zojirushi Mahobin Co., Ltd. (72) Inventor Shinichiro Iga 1-20-5 Tenma, Kita-ku, Osaka Zojirushi Mahobin Co., Ltd.

Claims (1)

[Claims] 1. A cooking plate of a cookware, wherein a thickness of a central portion surrounded by a peripheral portion of a back surface of the plate is formed to be larger than a thickness of the peripheral portion, excluding a heater contact portion on the lower surface of the central portion. A plate for cooking cookers, characterized in that a large number of shallow concave spherical dimples are formed on the surface in a scattered manner.