JPH0366305A - Rice cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to improvements in parts associated with attachment of a lid heater to a rice cooker.

[Conventional technology]

Rice cookers, which heat and cook rice using electricity, are now popular throughout the country and have become an essential appliance in every household's kitchen. Therefore, the enthusiasm of each manufacturer for developing this technology is amazing, and progress is literally being made every day.

Figure 2 shows (a) a partial view of the lid of a conventional rice cooker, and (b)
) is a plan view of the back side, in which 1 is the lid, 2 is the spring, 4 is the nichrome wire of the lid heater, 5 is the tape, 6 is the heat sink, 7 is the inner lid, 8 is the shaft for fixing the inner lid, 9 is the inner lid fixing shaft. It is a spacer.

As shown in the figure, the conventional lid heater with an output of about 10 watts and a small amount of heat generated has a structure in which a nichrome wire 4 is pasted with tape 5 on the top surface of a heat sink 5, and the inner lid 7 is A shaft 8 is fixed to the heat sink 5 via a spacer 9 . The material of these parts is aluminum.

[Problem to be solved by the invention] Since then, with the progress of research into rice cookers, in order to improve the taste of rice, it has become necessary to heat the inner pot that stores rice not only from below, but also from the sides and above. It became clear that it needed to be heated evenly. As a result, rice cooking methods changed, and lid heaters, which had previously been used primarily to keep rice warm, were strengthened and began to heat from above when cooking or stirring rice. Therefore, the output of the lid heater has recently been increased from the conventional 10 watts to 60 to 80 watts, and the structure of the lid heater and the materials of its parts are being considered from a new perspective. The present invention aims to provide a rice cooker equipped with a high-output lid heater, in which the method for attaching the lid heater and the materials of its parts have been improved.

[Means for Solving the Problems] In order to achieve the above object, in the present invention, a stainless steel presser plate is used to attach the lid heater with increased output to the heat sink, and the lid heater is controlled by the presser plate. A shaft for fixing the inner lid was used to secure it to the heat sink. Furthermore, an excessive temperature rise prevention device is installed near the lid heater.

[Function] Since the output of the lid heater has been strengthened to more than 60 watts, the amount of heat generated by the lid heater is also large, and the temperature near the lid heater rises considerably. However, by making the presser plate made of steer 1 steel plate, deformation due to heat etc. Moreover, since the inner lid fixing shaft is used to fix the lid heater to the heat sink, the number of parts can be reduced and costs can be reduced. Furthermore, a temperature overrise prevention device disposed near the lid heater cuts off power to the lid heater when the temperature inside the lid rises to a predetermined value or higher.

[Embodiment of the Invention] Fig. 1 shows (a) a plan view from the back side and (b) a side sectional view of a lid of a rice cooker which is an embodiment of the present invention.
．． 7.8.9 are the same or equivalent parts as conventional rice cookers, 1
0 is a lid heater with enhanced output, 11 is a lid heater holding plate, 12 is a temperature fuse, 13 is a plate for mounting the temperature fuse,
14 is a cable.

In the figure, a presser plate 11 for fixing the lid heater 10 to the heat sink 6 is made of a heat-resistant stainless steel plate and can withstand long-term use at high temperatures. Two inner lid fixing shafts 8 are used to fix the presser plate 11 to the heat sink 6, thereby reducing costs. In addition, in order to prevent the inside of the lid from being overheated, a temperature fuse 12 is provided near the lid heater 10, and when the temperature near the temperature fuse 12 reaches 188°C or higher, the temperature fuse 12 functions to close the lid. It is configured to cut off electricity to the heater 10.

In this embodiment, a temperature fuse is used as the temperature overrise prevention device, but the present invention is not limited to a temperature fuse, and other devices may be used.

[Effects of the Invention] The present invention uses a stainless steel holding plate to attach the lid heater to the heat sink in a rice cooker with enhanced output of the lid heater, so the holding plate can withstand long-term use. . In addition, because the inner lid fixing shaft was used to secure the lid heater to the heat sink, the number of parts was reduced, and the installation work was simplified, contributing to cost reduction. Furthermore, since the temperature overrise prevention device is provided near the lid heater, overheating inside the lid can be prevented and deterioration of the lid components due to overheating can be prevented.

[Brief explanation of drawings]

Fig. 1 shows a rice cooker lid according to an embodiment of the present invention; (a) is a plan view of the back side, (b) is a side sectional view, and Fig. 2 is a partial sectional view of a conventional rice cooker lid. be. In the figure, 6 is a heat sink, 7 is an inner lid, 8 is a shaft, 10 is a lid heater, 11 is a lid heater pressing plate, and 12 is a temperature fuse. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] A rice cooker comprising: a lid heater disposed inside the lid; a heat sink that covers the lower surface of the lid heater; and an inner lid fixed to the lower side of the heat sink by an inner lid fixing shaft. In the container, a presser plate for attaching the lid heater to the heat sink is formed of a stainless steel plate, and a shaft for fixing the inner lid is used to fix the presser plate to the heat sink, and there is no overheating in the vicinity of the lid heater. A rice cooker characterized by being equipped with a prevention device.