JPS592721Y2 - thermal rice cooker - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in the heat retention structure of a rice cooker that cooks rice and keeps it warm.

When using this type of rice cooker as a heat insulator, it is effective to isolate the inside of the rice cooker from outside air in order to increase heat retention efficiency.

However, when used as a rice cooker, a slight gap is required to communicate with the outside air to prevent rice from boiling over.

The purpose of the present invention is to minimize the dissipation of heat in the gap where the inside of the main body communicates with the outside air, and to improve the heat retention efficiency when used as a heat insulator.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A conventional heat-retaining rice cooker of this type, which is an object of improvement of the present invention, will be explained with reference to FIGS. 1 and 2.

In Figure 1, 1 is the main body of the rice cooker, 2 is the hinge 3
The lid body is attached to the upper frame 4 of the main body 1 so that it can be opened and closed freely.
A gap 5 is formed between the two.

In FIG. 2, 6 is an inner plate of the main body 1, 7 is a heat insulating material, and 8 is a heat-retaining heater.

Reference numeral 9 denotes a heat-retaining and rice-cooking pot housed in a container formed by the inner plate 6. Rice is cooked by a heater (not shown) provided at the bottom of the container, and the heat is mainly kept by the heat-retaining heater 8. It will be done.

Reference numeral 10 denotes a lid plate placed on a flange 11 at the upper opening of the heat-retaining and rice-cooking pot 9.

By the way, in the above structure, the outer periphery 12 of the upper frame 4 is lower than the protrusion 13 on the inner periphery of the lid body 2, and the gap 5 communicates linearly with the gap 14 formed between the inner plate 6 and the flange 11. Therefore, as shown in FIG. 4A, the hot air inside the main body 1 escapes to the outside without any hindrance as shown by the arrow a.

As this hot air escapes, cold air from the outside is sucked into the main body 1 as shown by the arrow, and the flange 1 of the heat-retaining and rice-cooking pot 9
Cool 1.

In view of this point, the present invention is intended to provide a structure around the upper frame 4 and the lid body 2 that prevents hot air from escaping within the main body 1 and prevents cold air from entering.

An embodiment of the invention will be described with reference to FIG.

In the same figure, 1 to 14 indicate the same parts as in FIG. 2.

The feature of the present invention is that the outer periphery 12 of the upper frame 4 is made higher than the lower end of the protrusion 13 on the inner periphery of the lid body 2.

In this way, linear communication between the gap 5 and the gap 14 is interrupted by the protrusion 13.

Therefore, as shown in Figure 4, the hot air inside the main body 1 hits the protrusion 13 and is divided into two vertically as shown by arrow a, but the hot air flowing downward passes under the cold air entering from the outside. Due to the nature of hot air (hot air has a tendency to rise above cold air), it is difficult for the hot air inside the main body to escape to the outside through the gap 5. The fact that it is difficult for cold air to escape also means that it is difficult for cold air from outside to enter the inside of the main unit.

As described above, the present invention provides a heat-retaining rice cooker that is equipped with a rice-cooking heater and a heat-retaining heater to keep the rice warm and cook the rice. A protrusion 13 is provided on the inner periphery of the lid 2 so as not to communicate linearly with the gap 14 formed between the flange 11 of the heat-retaining and rice-cooking pot 9 housed inside the lid 2 and the inner plate 6 of the main body 1. The lower end of the protrusion 13 is located below the inner circumference of the outer periphery 12 of the upper frame 4 of the main body 1, thereby preventing hot air from escaping inside the main body and preventing cold air from entering. do.

Therefore, the cooked rice can be kept warm in a stable state.
In addition, it has many excellent effects, such as reducing dew droplets generated in the heat-retaining and rice-cooking pot 9 due to the intrusion of cold air, preserving cooked rice deliciously, and reducing power consumption for heat-retaining.

[Brief explanation of the drawing]

Fig. 1: Front view of a heat-retaining rice cooker, Fig. 2: A cross-sectional view of the main parts of a conventional heat-retaining rice cooker, Fig. 3: A cross-sectional view of the main parts of an embodiment of the present invention, Fig. 4: Conventional product A and the book. An explanatory diagram of the operation of the device opening. 1...Body, 2...Lid, 3...
... Hinge, 4 ... Upper frame, 5 ... Gap, 6 ... Inner plate, 7 ... Insulation material, 8 ...
...Heater for keeping warm, 9... Heat keeping and rice cooking pot,
10... Lid plate, 11... Flange, 1
2...Outer periphery, 13...Protrusion, 14
······gap.

Claims (1)

[Scope of utility model registration request] A gap 5 formed between the main body 1 and the lid 2 is a gap 14 formed between the flange 11 of the heat-retaining rice cooker 9 housed inside the main body 1 and the inner plate 6 of the main body 1. A protrusion 13 is provided on the inner periphery of the lid 2 so as not to communicate linearly,
The lower end of the protrusion 13 is connected to the outer periphery 12 of the upper frame 4 of the main body 1.
A heat-retaining rice cooker characterized by being configured to be located below the inner periphery of the rice cooker.