JPS603763Y2 - rice cooker - Google Patents

Description

[Detailed description of the invention] The present invention relates to a rice cooker that can cook rice evenly and evenly.

In conventional electric rice cookers, for example, a pot is removably placed on the top of a heating plate having an electric heater, and the heat of the electric heater is transferred from the heating plate to the bottom of the pot to cook rice.

However, when rice is cooked in a rice cooker with this conventional structure, the upper part becomes crumbly with less moisture, and the lower part becomes sticky with more moisture, resulting in uneven cooking and poor taste.

For this reason, in recent years, a space for heating has been provided around the outside of the pot, and a heater is placed within this space at a predetermined distance from the pot. A rice cooker that heats rice is being considered.

The present invention relates to an improvement of a rice cooker that heats a pot by disposing a heater in the above-mentioned space. By placing it directly below the center of the outer bottom,
Another object of the present invention is to provide a rice cooker that can cook rice evenly with even less uneven cooking.

An embodiment of the present invention will be described below. In FIGS. 1 and 2, 1 is a substantially cylindrical outer case with open upper and lower surfaces, and 2 is a heat insulating material 3 disposed inside the outer case. The inner case has a cylindrical shape with a bottom, and the upper end of the inner case is fixed by screws or the like to an annular condenser 4 made of heat-resistant plastic, for example, which is fitted around the upper end of the outer case 1.

Reference numeral 5 denotes a bottom plate having support legs 6, which are fitted and fixed to the lower end of the outer case 1.

Reference numeral 7 denotes a pot having an outwardly facing flange 8 formed at the upper opening edge thereof, and is disposed within the inner case 2 by placing the flange 8 on the upper surface of the dew tray 4.

The height and outer diameter of the pot 7 are set to be smaller than the inner case 2, so that a space 9 that is substantially sealed by the inner case 2 is formed around the outer periphery of the pot 7. are continuously opposed to the outer bottom surface and outer surface of the pot 7.

Reference numeral 10 denotes a sheathed heater which is bent into a substantially S-shape, and is placed in a space 9 at a predetermined distance from the pot 7, and whose end and middle parts are held by an insulator 11 fixed to the inner bottom of the inner case 2. Ingredients 29
The center portion is located directly below the center portion of the outer bottom surface of the pot 7, and the terminal portions 12 at both ends extend downward through the inner bottom portion of the inner case 2.

13 is a thermostat disposed at the inner bottom of the inner case 2, and is disposed within one heater space of the S-shaped heater 10.

14 is an inner case 2 so as to cover the thermostat 13.
A heat shield plate placed below the bottom insulation material 15 on the top surface of the heat shield plate.
is held.

Reference numeral 16 denotes an outer lid rotatably supported by a hinge member 17 at the upper end of the outer case 1, and has a carrying handle 1 on the upper surface.
I have 8.

Reference numeral 19 denotes an inner cover, which is fixed to the inner surface of the outer cover 16 via a cover heat insulating material 20.

Reference numeral 21 denotes a holder located on the opposite side of the hinge member 17 and fixed to the upper end of the outer case 1. When the outer M16 is closed, a hook provided on the handle part 18 engages with the metal 22, and the outer M16 It holds a retaining part 23 that holds the holder in a closed state.

24 is a push button for releasing the engagement between the hook 22 and the engaging portion 23;
Reference numeral 25 denotes a heat radiation plate attached to the lower surface of the inner cover 19, and a heat-retaining heater 26 is disposed on the upper surface thereof.

27 is an inner lid that closes the upper opening of the pot 7; 28 is an outer lid 1;
A steam vent provided at 6 passes through the inner cover 19 and the inner lid 27 and communicates with the inside of the pot 7.

Next, the operation of this embodiment having the above configuration will be explained.

Put washed rice and the required amount of water into the pot 7, store the pot 7 in the inner case 2, and close the outer M16.

When the heater 10 is energized in this state, the air in the space 9 is heated, and the heated air and the radiant heat from the heater 10 heat the pot 7 to cook rice.

When all the water in the pot 7 has been absorbed by the rice, the outer bottom of the pot 7 becomes empty and the temperature suddenly rises, which causes the thermostat 13 to detect the temperature and activate the heater. 10 is cut off, and the insulation heater 26 is turned off.
Switch to energize.

Although not shown, the upper part of the outer peripheral surface of the inner case 2 is also kept warm.
The pot 7 is kept warm from almost the entire surface.

In the above operation, in this embodiment, the space 9 is
Not only is the heater 10 disposed in the space 9 with a predetermined distance from the pot 7, but also the heater 1
0 is bent into a substantially S-shape, and the central part thereof is located directly under the center of the outer bottom surface of the pot 7, so that the radiant heat to the pot 7 becomes more uniform, You can cook rice with even heating.

Furthermore, even if there is some variation in performance when manufacturing the heater 10, it can be corrected by forming it into an S-shape.

Furthermore, the amount of heat generated near the terminal portion 12 of the heater 10 is small, which could lead to uneven temperature, but the advantage is that the lack of heat generation in this terminal portion can be compensated for by having the intermediate portion located nearby. be.

Note that the substantially S-shape in the present invention includes not only the S-shape but also the inverted S-shape.

As explained above, the present invention not only allows rice to be cooked evenly even near the center of the pot, but also corrects slight variations in performance when manufacturing heaters, and also allows heat generation at the terminals. It is possible to provide a rice cooker that has advantages such as being able to compensate for insufficient quantity in the middle part, and can greatly improve the taste of cooked rice.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the rice cooker according to the present invention with main parts cut away, and FIG. 2 is a top view of the inner case with the outer pot removed. In the figure, 7 is a pot, 9 is a space, 10 is a heater, 11 is an insulator, and 16 is an outer lid.

Claims (1)

[Scope of utility model registration request] In a rice cooker in which a heating space is formed around the outer periphery of a pot, and a heater is disposed within the space at a predetermined distance from the pot, the heater is bent into a substantially S-shape. A rice cooker characterized in that the rice cooker has a strong shape and is arranged so that its center portion is located directly below the center portion of the outer bottom surface of the pot.