JPS605293B2 - 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 attached to the top of a heating plate with 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 water, while the lower part becomes sticky with a lot of water, resulting in uneven cooking and a loss of flavor. For this reason, in recent years, a space for heating has been provided around the outer circumference of the steel, and a heater has been placed in this space at a predetermined distance from the pot, and the heat radiated from the heater and the air in the space have been removed. A rice cooker is being considered that uses convection to heat the pot. The present invention relates to an improvement in a rice cooker that heats a pot by disposing a heater in the above-mentioned space, and by separating both ends of the heater and supporting it with a support member, even more uneven cooking can be achieved. The present invention also provides a rice cooker that can cook rice evenly. An embodiment of the present invention will be described below. In the figure, 1 is a substantially cylindrical outer case with open upper and lower surfaces;
Reference numeral 2 denotes a bottomed cylindrical inner case disposed inside this outer case via a heat insulating material 3. In this inner case, the upper end of the inner case is iron-bonded to the inner periphery of the upper end of the outer case 1. For example, it is fixed to an annular mounting frame 4 made of heat-resistant plastic with screws or the like.

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

Reference numeral 7 denotes a pot having an outwardly directed flange 8 formed on the edge of the upper end, and is disposed within the inner case 2 by mounting the flange 8 on the upper surface of the mounting frame 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 which is substantially sealed by the inner case 2 is formed around the outer circumference of the pot 7. are continuously opposed to the outer bottom surface and outer surface of the pot 7.
1 is a sheathed heater in which each river is bent into an S-shape, and an insulator 11 and a presser are installed in a space 9 at a predetermined distance from the pot 7 and whose end and middle portions are fixed to the inner bottom of the inner case 2. Ingredients 29
The terminal portions 12 at both ends extend downwardly through the inner bottom of the inner case 2 from opposing sides of the inner bottom of the inner case 2 .

Reference numeral 13 denotes a thermostat installed at the inner bottom of the inner case 2, and is arranged in the striped space of either one of the S-shaped heaters 10.

Reference numeral 14 denotes a heat shield plate disposed below the inner case 2, and a bottom heat insulating material 15 is held on the upper surface of the heat shield plate.

Reference numeral 16 denotes an outer lid that is supported by a hinge member 17 at the upper end of the outer case 1 so as to be foldable, and has a handle portion 1 for carrying on the upper surface.
It has 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.

A holder 21 is located on the opposite side of the hinge member 17 and is fixed to the upper end of the outer case, and when the outer cover 16 is closed, it engages with a latch 22 provided on the handle 18 to close the outer cover 16. It holds an engaging portion 23 that is held in this state.

Note that the engaging portion 23 is integrally formed with the mounting frame 4. 2
4 is a pusher plate for releasing the engagement between the latch 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 surface 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 is conveyed into the pot 7.

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

Washed rice and the required amount of water are put into a pot 7, stored in the case 2 inside the pot 7, and the outer lid 16 is closed. When the heater 101 is energized in this state, the air in the space 9 is heated,
This heated air and the heat radiation from the heater 10 cause the pot 7 to
is heated and the rice is cooked.

When all of the water in the pot 7 is absorbed by the rice, the outer bottom of the pot 7 becomes dry and the temperature rises rapidly.The thermostat 13 detects this temperature and activates. , the power supply to the heater 10 is cut off, and the power supply is switched to the heat retention heater 26 . Although not shown, a heat-retaining heater is also provided at the upper part of the outer peripheral surface of the inner case 2 to keep the pot 7 warm from almost the entire surface thereof. Conventionally, it has been common practice to provide both ends of the heater close to each other and to simultaneously support them with one support member.

However, in this embodiment, the space 9 is formed so as to continuously face the outer bottom surface and outer surface of the pot 7, and
The heater 10 is placed at a predetermined distance from the pot 7 in the space 9.
Moreover, since both ends of the heater 10 are separated from each other and are arranged at the inner bottom of the inner case 2, sufficiently even heat acts on the pot 7 via the space 9. In addition, the low heat generating parts at both ends of the heater 10 do not overlap, and the rice can be cooked uniformly and without uneven heating. In addition, when supporting the heater 0, if the shape of the heater is made into a substantially S-shape as in this embodiment, the fabric part and the intermediate part can be supported simultaneously with one support member, so the number of parts can be reduced, and the heater This has the advantage that the lack of heat generation at both ends can be compensated for in the middle. As described above, according to the present invention, rice can be cooked evenly with a simple configuration.

We can provide a rice cooker.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the rice cooker according to the present invention with essential parts cut away, and FIG. 2 is a top view of the inner case with the outer lid and pot removed. In the figure, 7 is a pot, 9 is a space, 10 is a heater, 11 is an insulator (supporting member), 16 is an outer lid, and 29 is a presser (supporting member)
It is. Figure 1 Figure 2

Claims (1)

[Claims] 1. A sheathed heater with a low heat generation end is used, a heating space is formed around the outside of the pot, and the heater is disposed within the space at a predetermined distance from the pot. A rice cooker characterized in that the low heat generation portions at both ends of the heater are separated from each other and supported by a support member at positions opposite to the center of the outer bottom surface of the pot.