JPS5917222Y2 - 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 equipped with an electric heater, and the heat from the electric heater is transferred from the heating plate to the bottom of the pot to cook rice. When rice is cooked in a rice cooker with this conventional structure, the upper part has a low moisture content and becomes crumbly, while the lower part has a high moisture content and is sticky, resulting in uneven cooking and a loss of flavor.

For this reason, in recent years, a space for heating has been provided around the outside of the pot, and a heater has been disposed within this space so that the radiant heat from the heater and the convection of air within the space can be used to heat 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. The thermostat, which is attached to the outer bottom of the pot and detects its temperature, is placed eccentrically outward from the center of the outer bottom, making it possible to cook rice even more evenly with less uneven cooking. The purpose is to provide rice cookers.

One embodiment of the present invention will be described below. In FIGS. 1 and 2, 1 is a substantially cylindrical outer case with an open bottom surface, and 2 is arranged inside this outer case via a heat insulating material 3. The upper end of the inner case is fixed with screws or the like to the upper surface of an annular dew pan 4 made of heat-resistant plastic, for example, which is fitted around the inner periphery of the upper end of the outer case 1. There is.

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 on 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 so as to be disposed directly under the outer periphery and the center of the outer bottom surface of the pot 7. is supported by an insulator 11 fixed to the inner bottom of the inner case 2 and a presser 29, and terminal portions 12 at both ends extend downward through the inner bottom of the inner case 2.

Reference numeral 13 denotes a thermostat disposed at the inner bottom of the inner case 2, off-center, and arranged so that its upper surface joins to a position outside the center of the outer bottom surface of the pot 7.

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 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.
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 1. When the outer cover 16 is closed, a hook provided on the handle 18 engages with the metal 22 to close the outer cover. 16 is held in a closed state.

Note that the engaging portion 23 is integrally formed with the dew tray 4.

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 rear cylinder 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.

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 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 is no longer absorbed by the rice, the pot 7
When the outer bottom of the heater suddenly heats up in the dry state, the thermostat 13 detects the temperature at this time and is activated, cutting off the power to the heater 10 and switching to the heat-retaining 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.

In the above action, in this embodiment, the space 9 is
The heater 10 is arranged in the space 9 with a predetermined distance from the pot 7, and the shape of the heater 10 is curved. Since the radiant heat is disposed so as to pass directly under the outer periphery and the center of the outer bottom surface of the pot 7, the radiant heat to the pot 7 is made more uniform. Since the detecting thermostat is eccentrically placed outside the center of the outer bottom of the pot 7, the conventional drawback of the temperature being low in the center of the pot 7 is solved, and rice can be cooked evenly. It is what it is.

As described above, according to the present invention, the radiant heat of the heater acts evenly on the outer periphery and the center of the outer bottom of the pot, and it is possible to lower the temperature at the joint of the outer bottom of the pot with the thermostat. Since this can be effectively prevented, it is possible to provide a rice cooker that can cook rice more evenly than before.

[Brief explanation of the drawing]

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 heater installation part with the outer lid and pot removed. In the figure, 7 is a pot, 9 is a space, 10 is a heater, and 13 is a thermostat.

Claims (1)

[Scope of utility model registration request] In a rice cooker, 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, and the heater is placed against the outer bottom surface of the pot. The thermostat is arranged in a bent manner so as to be located directly under the outer peripheral part and the center part, and a thermostat that is connected to the outer bottom surface of the pot and detects its temperature is eccentrically placed outward from the center of the outer bottom surface of the pot. A rice cooker characterized by the following: