JPS5920805Y2 - rice cooker - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to preventing dew buildup on the steam cylinder of a rice cooker.

When you cook rice in a rice cooker, water vapor is generated, and when this water vapor is cooled by coming into contact with cold air outside during the discharge process, dew may form on the main unit.If left for a long time, it will evaporate, but it is not sanitary. Therefore, there was a desire for a structure that would prevent steam from escaping during rice cooking.

The present invention has been made based on the above-mentioned demands, and embodiments of the present invention will be described below with reference to the accompanying drawings.

In the configuration shown in the figure, when rice is cooked in the pot 4, steam passes through holes suitably made in the inner lid 3.

The lid 1 is attached to the main body 8 and the shaft 2 so that it can be opened and closed, and the opening periphery of the pot 4 is isolated from the outside air by a metal plate 6 and a backing 7, so that when the lid is closed, the steam is fixed to the metal plate 6. It is discharged outside from the steam cylinder 5.

The steam cylinder 5 is fixed to a metal plate 6 as shown in FIG.

The steam outlet has a high velocity, so dew does not adhere to the main body.

On the other hand, the steam passing through the steam path A or 8 is the steam tube 5.
Since the diameter changes from a large diameter to a small diameter in the middle, turbulent flow occurs at the stepped portion, and dew condenses on the inside of the steam cylinder 5.

During normal rice cooking, the amount of dew condensation is small and the flow of steam is not so fast, so dew condenses in a ring shape inside the stepped portion, as shown by 2 in FIG.

However, when cooking soft rice, or when the voltage increases abnormally and the steam flow exceeds normal speed,
The dew that is drawn by the water vapor shown at the steam outlet and condenses on the stepped portion travels along the inner wall of the small diameter cylinder of the steam cylinder 5 and emerges on the surface.

The dew on this surface is shown by ho.

However, this dew evaporates quickly.

This is because the tip of the small-diameter cylinder of the steam cylinder 5 has a flat part larger than the steam hole, and the dew drops ride on this flat part, but the steam cylinder 5 allows water vapor heated to nearly 100°C to pass through. The temperature is high enough compared to the outside air that the dew evaporates like water droplets on a frying pan.

As described above, during normal rice cooking, dew does not form on the outside of the main body, and even in abnormal situations, dew evaporates in a short time, thereby preventing dew from forming.

This keeps the rice cooker sanitary at all times, and since there are no other holes for steam to escape other than the steam cylinder, there is no place for dew to form on the main body.

Furthermore, if the large diameter cylinder of the steam cylinder is made sufficiently large and the small diameter cylinder is made sufficiently small compared to the large diameter cylinder, dew will not form during abnormal conditions.

As shown in Fig. 3, the steam cylinder 5 connects the large diameter cylindrical part and the small diameter cylindrical part in the middle, and makes a hole of an appropriate size that is smaller than the outside diameter of the small diameter cylinder at the output of the small diameter cylindrical part. In this case, the two step portions may be formed of a metal tube.

In this case, the amount of dew condensation stored in the second stage will be larger than that in the first stage, and furthermore, the amount of dew condensation stored in the second stage will be larger than that in the first stage, and the dew that will accumulate on the surface of the steam cylinder 5' beyond the second stage in an abnormal situation will also be absorbed by the steam. Due to the high temperature of the cylinder, it evaporates in a short time, making it sanitary and convenient as it does not require cleaning or other maintenance.

In addition, when the steam cylinder backing 10 as shown in FIG. This not only prevents condensation from entering the inside of the lid body even if it flows when steaming, but also prevents children etc. from easily removing the steam cylinder backing 10, which has the effect of making the structure stronger. arise.

As is clear from the above explanation, according to the present invention, by providing a step in the steam cylinder, dew condenses on this step during normal rice cooking, so dew is not discharged to the outside, and abnormal rice cooking is prevented. At times, dew that condenses on this step is guided to the top of the steam cylinder and evaporates, so no dew is discharged to the outside, and the equipment can always be kept sanitary.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a jar rice cooker showing one embodiment of the present invention, FIG. 2 is a cross-sectional view of the same main part, and FIG. 3 is a cross-sectional view of the main part of another embodiment of the present invention. 1...Lid, 4...Pot, 5...
Steam cylinder, 6...metal plate, 7...backing.

Claims (1)

[Scope of utility model registration request] It includes a main body with a pot inside, a lid body that covers the main body, a metal plate fixed to the lower surface of the lid body, and a backing that abuts the opening edge of the pot, and a large diameter cylindrical part and the top of the lid body. A steam cylinder consisting of a small diameter cylindrical part connected to the metal plate is fixed to the metal plate, and the upper surface of the steam cylinder is exposed through the lid, and a flat surface larger than the hole in the upper surface is integrally formed. rice cooker.