JPH073518U - rice cooker - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain an inexpensive rice cooker that does not spill over. [Structure] A main body 2 in which an inner pot 1 is detachably housed, a lid 3 covering an upper opening of the main body 2, a heat radiating plate 4 facing the inner pot 1 on the lid 3, a lid heater 5, and a heat radiating plate 4 In the rice cooker provided with the steam pipe 6 penetrating the lid 3 from the side and the lid sensor 7 for detecting the temperature of the heat dissipation plate 4, the steam pipe 6 is provided with the locking portion 6a, and the locking sensor 6a is provided on the locking portion 6a. And the lid sensor 7 is brought into contact with the heat dissipation plate 4.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rice cooker provided with a lid sensor.

[0002]

[Prior art]

 In this type of rice cooker, a lid sensor, together with a lid heater, is attached to the heat sink of the lid in advance, and then the lid sensor is pressed to the heat sink with a metal fitting fixed to the lid ring. .

[0003]

[Problems to be solved by the device]

 In the above rice cooker, the foot sensor is pressed against the heat dissipation plate by the metal fittings in order to improve the temperature detection capability of the lid sensor. However, because the location of the lid sensor on the heat dissipation plate is limited due to the shape of the holding metal fitting, it becomes difficult to install the lid sensor at the optimum location to detect the temperature drop of the heat dissipation plate. The ability to detect is reduced.

[0006] Therefore, there is a problem that the lid sensor cannot quickly detect the temperature drop of the heat sink during rice cooking, resulting in spillage.

[0005]

[Means for Solving the Problems]

 The present invention has been made to solve the above problems, and includes a main body that detachably accommodates the inner pot, a lid that covers the upper opening of the main body, and a heat radiating plate that faces the inner pot. In a rice cooker equipped with a lid heater, a steam pipe that penetrates the lid from the radiator plate side, and a lid sensor that controls the lid heater by detecting the temperature of the radiator plate, the steam pipe is provided with a locking part and a locking part. The lid sensor is locked and the lid sensor is in contact with the heat sink.

[0006]

[Function] In the above rice cooker, the steam pipe of the lid is provided with a locking portion, the locking sensor is locked to the locking portion, and the lid sensor is brought into contact with the heat radiation plate of the lid. Even if the bubbles in the bed of the smoke consume the heat of the lid heater and evaporate, and the temperature of the heat sink drops, the lid sensor, which is in contact with the heat sink by the steam pipe, keeps the temperature of the heat sink low in this state. It quickly detects and controls the lid heater, so the bean does not spill over from the body. Further, since the lid sensor is locked to the locking portion of the steam pipe and the lid sensor is brought into contact with the heat radiation plate, a pressing metal fitting for pressing the lid sensor is unnecessary.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS.

In the figure, reference numeral 1 denotes an inner pot for cooking rice, which is formed in a bottomed shape with an upper opening. Reference numeral 2 is a main body of a rice cooker in which the inner pot 1 is detachably housed, and 3 is a lid that covers the upper openings of the main body 2 and the inner pot 1 in an openable and closable manner. Inside the lid 3, a heat radiating plate 4 facing the inner pot 1, a code-shaped lid heater 5 for heating the heat radiating plate 4, and steam generated during cooking are released to the outside, so that the heat radiating plate 4 side A vapor pipe 6 that penetrates the lid 3 and a lid sensor 7 that detects the temperature of the heat dissipation plate 4 and controls the lid heater 5 are provided. In addition, the present invention focuses on the fact that the temperature drop of the heat sink 4 due to the gelatinized starch during rice cooking is not uniform on the whole surface, and the temperature detection performance changes depending on the installation location of the lid sensor 7, and the gelatinized starch does not evaporate completely. Since the vicinity of the steam pipe 6 through which the gas flows is most detectable, the steam pipe 6 is provided with a curl-shaped engaging portion 6a, and the lid sensor 7 is engaged with the engaging portion 6a. Is in contact with the heat dissipation plate 4. Reference numeral 8 is a lid ring that seals the outer periphery of the lid 3, to which the heat dissipation plate 4 is fixed.

Next, the operation of this embodiment will be described.

When the user mistakenly cooks rice with a larger amount of water than the proper amount of water, gelatinized starch is generated in a larger amount than in normal rice cooking, and a large amount of gelatinized starch is attached to the heat dissipation plate 4. In this state, the calorific value of the lid heater 5 is largely consumed by the evaporation of the gelatinized starch adhering to the heat dissipation plate 4, so that the temperature of the heat dissipation plate 4 decreases. At this time, the lid sensor 7 in contact with the heat sink 4 is quickly detected by the steam pipe 6 to detect the lowering temperature of the heat sink 4, so that the temperature information provides the software for preventing spillage of the control circuit (not shown), Since the lid heater 5 is controlled, the bed does not spill over from the main body 2.

[0011]

[Effect of device]

 According to the present invention, the lid sensor, which comes into contact with the heat sink through the steam pipe, quickly detects the temperature drop of the heat sink during rice cooking and controls the lid heater, so that the tongue does not spill over from the main body. Also, since the lid sensor is locked to the locking part of the steam pipe and the lid sensor is brought into contact with the heat dissipation plate, there is no need for a holding metal fitting for pressing the lid sensor.

[0012] Accordingly, a pressing metal fitting for pressing the lid sensor is not required, and the number of parts can be reduced, so that an inexpensive rice cooker that does not spill over can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view of a rice cooker showing an embodiment of the present invention.

FIG. 2 is a partially cutaway top view of the rice cooker.

FIG. 3 is a top view of a main part of the rice cooker.

[Explanation of symbols]

 1 Inner pot 2 Main body 3 Lid 4 Heat sink 5 Lid heater 6 Steam pipe 6a Locking part 7 Lid sensor

Claims (1)

[Scope of utility model registration request] 1. A main body (2) for detachably accommodating an inner pot (1), a lid (3) for covering an upper opening of the main body (2),
In the lid (3), a heat radiating plate (4) facing the inner pot (1), a lid heater (5), and a steam pipe (6) penetrating the lid (3) from the heat radiating plate (4) side, Heat sink (4)
In a rice cooker provided with a lid sensor (7) for detecting the temperature of the steam pipe (6), an engaging portion (6a) is provided, and the engaging portion (6a) is engaged with the lid sensor (7). The rice cooker characterized in that the lid sensor (7) is brought into contact with the heat dissipation plate (4).