Heating cooker

A cooker and heating unit technology, which is applied to cooking utensils, special materials for cooking utensils, household appliances, etc., can solve the problem that the uneven heating in the pot cannot be alleviated, and achieve the effect of promoting uniform cooking

Active Publication Date: 2012-10-17
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Therefore, considering that boiling mainly occurs from the heat-generating part facing the induction heating coil, there is a problem that uneven heating in the pot cannot be reduced.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0072] figure 1 It is a sectional view of the rice cooker in Embodiment 1 of this invention. figure 2 It is a figure which shows the pot in Embodiment 1 of this invention, wherein, figure 2 (a) is a top view, figure 2 (b) is the main view. image 3 It is an enlarged cross-sectional view showing a main part of the pan bottom surface in Embodiment 1 of the present invention.

[0073] exist figure 1 Among them, the main body 1 of the rice cooker is equipped with a pot 2 which can be freely attached and detached. A cover 3 covering the upper surface of the main body 1 is provided on the main body 1 in a freely openable and closable manner.

[0074] The main body 1 has: pot heating units 4a and 4b, which are used to inductively heat the pot 2; a pot temperature detection unit 5, which is used to detect the temperature of the pot 2; a steam generating unit 6, which is used to generate steam; and control unit7. In this embodiment, an induction heating coil is used as an e...

Embodiment approach 2

[0125] Figure 4 It is an enlarged cross-sectional view showing a main part of the pot bottom surface in the rice cooker according to Embodiment 2 of the present invention. In addition, the same code|symbol is attached|subjected to the same part as Embodiment 1, and description is abbreviate|omitted.

[0126] Such as Figure 4 As shown, in the rice cooker of the present embodiment, the fluororesin coating layer 22 has the additive particles A concentrated in the lowermost portion of the concave portion (concave shape of the inner surface of the pot 2 with unevenness). The additive particles A contain at least one of silicon carbide and diamond. With such a structure, boiling from the concave portion is promoted, whereby uniform heat transfer to rice can be realized by boiling heat transfer.

[0127] Fluoroplastic is a material with low thermal conductivity, while silicon carbide and diamond are materials with extremely high thermal conductivity. That is, in the case of usi...

Embodiment approach 3

[0131] Figure 5 An enlarged cross-sectional view showing a main part of a pot bottom surface in a rice cooker according to Embodiment 3 of the present invention, Figure 6 An enlarged perspective view showing the fluororesin coating on the bottom surface of the pot in the rice cooker according to Embodiment 3 of the present invention. In addition, the same code|symbol is attached|subjected to the same part as Embodiment 2, and the description is abbreviate|omitted.

[0132] Such as Figure 5 , Figure 6 As shown, a plurality of micropores B in the shape of polygonal pyramids are formed in the surface layer of the fluororesin coating 22 at positions other than the concave and convex portions. In addition, the additive particles C are concentrated on the surface layer of the fluororesin coating 22, and are most numerous in the lowermost portion of the fine pores B. Like the additive particles A, the additive particles C contain at least one of silicon carbide and diamond. ...

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Abstract

The present invention provides a heating cooker, comprising a pan with the upper surface provided with an opening portion and the side surfaces and the bottom surface provided with a plurality of uneven portions; and a pan heating unit arranged at the outer surface side of the pan, wherein the uneven potion of the pan is provided with a shape corresponding to the uneven shape of the inner surface side and the outer surface side, and when the inner surface side of the pan is recessed, the outer surface side corresponding to the inner surface side is protruding. The pan heating unit is arranged at the outer surface side before forming the uneven portion. The heat amount per unit area provided to a food to be cooked from the portion provided with the uneven portion is approximate to that provided to the food to be cooked from the portion not provided with the uneven portion. Therefore, the pan is uniformly heated, the boiling appears uniformly at the periphery of the whole pan bottom, the uniform boiling heat conduction enables the food to be cooked to be heated uniformly, thereby enabling all portions of foods to be cooked in the pan to be uniformly cooked (especially gelatinization when the food to be cooked is rice). Therefore, the heating cooker can deliciously cook foods to be cooked in the pan.

Description

technical field [0001] The present invention relates to a heating cooker aimed at improving cooking performance by reducing uneven heating caused by a pan heating unit provided at the bottom, for example, an induction heating pan heating unit. Background technique [0002] In the past, for the pots used in heating cookers such as rice cookers that are widely sold in the market, using electromagnetic induction heating, the base material is formed of aluminum alone, or a bonding material of aluminum and stainless steel is used. Or composite materials such as aluminum, stainless steel and copper bonding materials are the mainstream. [0003] These metal rice cooker pots are coated with fluororesin on the inner surface of the pot to prevent the rice, which is a common cooking material, from sticking strongly to improve the anti-sticking properties of the rice. [0004] Among these pots, there is a pot in which the bottom surface of the pot is provided with irregularities to inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47J27/00A47J36/02
Inventor 新田浩朗佐佐木晋介
Owner PANASONIC CORP
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