JPS5856581Y2 - jar rice cooker lid - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lid for a jar rice cooker for cooking rice and keeping it warm for a long time.

Conventionally, when attaching a heat sink to the lid, the screw head and the heat sink were designed to come into contact with liquid directly, but with this conventional method,
Heat from the lid heater provided on the heat sink escapes from the heat sink through the screws to the lid, increasing the temperature of the lid at the heat sink mounting screw portion, so it was necessary to use a material with a high heat resistance temperature for the lid.

In addition, since both the screw head and the heat sink are metal, gaps tend to form, and steam can enter the lid through these gaps, causing the insulation material to become damp, reducing the insulation effect of the insulation material, and causing gaps on the outer surface of the lid. There were problems such as steam coming out.

The present invention has been devised in view of the above-mentioned drawbacks, and embodiments of the present invention will now be described with reference to the accompanying drawings.

In the figure, a main body 1 having a heat-insulating structure is provided with a lid 2 that can be opened and closed freely, and an inner pot 3 is housed in the main body 1 in a detachable manner.

A rice-cooking heater 4 and a rice-cooking thermoswitch 5 are mounted on the inner bottom of the main body 1, a heat-retaining heater 6 and a heat-retaining temperature control element 7 are mounted on the inner surface of the main body, and a heat sink 8 is mounted on the lower surface of the lid 2. A lid heater 9 made of a linear cord heater is provided on the top surface of the heat sink 8, and an inner lid 10 is detachably attached to the heat sink plate 8.

Next, we will explain how to attach the heat sink.

A lid heater 9 is attached to the heat sink 8 and supplies heat to the inner lid 10 during heat retention.In order to keep the temperature distribution of the inner lid 10 constant, the heat sink 9 and the inner lid 10 are transfers heat through the air layer, and the temperature of the heat sink 9 becomes considerably high.

For this reason, the heat dissipation plate 8 is attached to the lid 2 with screws 13 via a washer 11 and a backing 12 made of a resin having low thermal conductivity and flexibility.

As a result, the screws and the heat sink, and the heat sink and the lid do not come into direct contact, so the heat from the heat sink 8 is difficult to transfer to the lid 2, and the lid 2 can be made of an inexpensive material with a low heat-resistant temperature. This makes it difficult for heat to escape to the outside, improving heat retention efficiency.

Further, since the heat dissipation plate 8 is sandwiched between the resin washer 11 and the backing 12 and attached to the lid 2 with screws 13, it is completely waterproof and no steam enters into the lid.

As a result, the lid heat insulating material 14 is moistened, heat conduction is improved, and the heat insulation effect is not deteriorated.

Also, steam does not come out from the gaps on the outer surface of the lid.

As described above, the present invention has great practical value, such as improved heat retention efficiency and the ability to use materials with low heat resistance for the lid.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a jar rice cooker showing an embodiment of the present invention, and FIG. 2 is a sectional view of a main part of the same jar rice cooker. 1...Body, 2...Lid, 3...
・Inner pot, 4...Rice cooking heater, 6...Insulating heater, 8...Radiation plate, 9...Lid heater, 11...・Washer, 12... Backing.

Claims (1)

[Scope of utility model registration request] It has a lid that can be opened and closed on the main body, an inner pot that is removably housed in the main body, a heat radiation plate attached to the back of the lid, and a lid heater provided on the heat radiation plate, and a space between the heat radiation plate and the lid. A lid for a jar rice cooker, characterized in that a resin backing is sandwiched between the lid and a heat dissipation plate is attached to the lid with screws via a resin washer.