JPH11235274A - Rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice cooker eliminating the swelling of cooked rice due to dew condensation and reducing power consumption in a warmth keeping state. SOLUTION: The cooker is provided with a rice cooker main body 21, a pot 22 housed within the main body 21 in the state of being freely attachable and detachable and a cover member 36 positioned over this pot 22 and covering the upper opening part of the main body 21 in the state of being freely openable and closable. Then, a heat insulating space layer 33 suppressing the moving of air is formed with the member 36 by clogging a wiring hole 32 opposed to a pot opening part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker used in a general household or the like.

[0002]

2. Description of the Related Art A conventional rice cooker will be described below.

FIG. 5 shows a conventional rice cooker. In FIG. 5, 1 is a pot, 2 is an outer lid, 3 is a metal heat insulating plate (material is aluminum) in which a heating member 4 (hereinafter referred to as lid heater) is disposed on the upper part, and 5 is an outer lid 2 A substantially ring wall extending and holding a metal heat insulating plate, 6 is a wiring hole for wiring a lead wire 13 of a lid heater 4 disposed on the substantially ring wall 5, and 7 is attached to the substantially ring wall 5. Pot packing for sealing the substantially ring wall 5 and the metal heat insulating plate 3, 8 is a heat insulating member disposed on the metal heat insulating plate 3, 9 is a heating member for heating the pan 1 from the bottom (induction heating in the figure). Coils, hereinafter referred to as bottom heaters), 10 is a heating member (not shown, hereinafter referred to as side heater) for heating the pan 1 from the side, and 11 is the temperature of the metal heat insulating plate 3. Thermistor (hereinafter referred to as lid sensor)
And 12 is a service for detecting the temperature of the bottom of the pan 1
It is a mister (hereinafter referred to as a bottom sensor).

[0004] Regarding the rice cooker configured as described above,
The operation at the time of keeping the rice warm will be described. When keeping the rice warm, it is necessary to keep the temperature in the pot 1 uniform at a certain temperature, and therefore, the lid sensor 11 and the bottom sensor 12
To detect the temperature in the upper part of the pot 1 and the bottom of the pot.
The heater 4, the side heater 10, and the bottom heater 9 are operated and the pan 1
Maintain the temperature of the rice inside.

[0005] Here, the heat insulating structure of the outer lid 2 of the rice cooker is described. An insulating member 8 is provided on a lid heater 4 facing the pot 1, and the insulating member 8 is disposed substantially inside the ring wall 5. By covering from the upper surface with the outer lid 2, the heat radiation of the rice from the upper surface of the pot 1 was reduced and the heat insulation was measured.

[0006]

However, in the above-mentioned conventional configuration, since the lid heater 4 is provided on the metal heat insulating plate 3, the lid heater is provided on the substantially ring wall 5 of the outer lid 2. 4 Lee
A wiring hole 6 for laying out the wiring 13 must be provided. The wiring hole 6 allows the outside air to flow through the space between the outer lid 2 and the metal heat insulating plate 3, and the metal heating plate 3 is cooled by the outside air. The dew water adhered to the rice, and the dew water dripped onto the rice, causing the rice to become soaked. In order to reduce the dew condensation water, the lid heater is energized to heat the metal heating plate 3. However, the heating causes the rice to turn yellow and deteriorate, and requires more power than required to maintain the rice temperature. Was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a rice cooker in which rice is not swollen due to dew condensation water at the time of heat insulation, and furthermore, the power consumption at the time of heat insulation is reduced.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a rice cooker main body, a pot removably stored in the rice cooker main body, and the rice cooker located above the pan. A lid member that covers the upper opening of the main body so as to be openable and closable, wherein the lid member forms a heat insulating space layer facing the pan opening and suppressing the movement of air.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 comprises a rice cooker main body, a pot removably stored in the rice cooker main body,
A lid member located above the pot and covering the upper opening of the rice cooker body so as to be openable and closable, wherein the lid member is formed with a heat retaining space layer facing the pot opening and suppressing the movement of air. By so doing, it is possible to eliminate the dread of rice caused by dew condensation water during the heat retention, and further reduce the power consumption during the heat retention.

According to a second aspect of the present invention, the heat insulating space layer provided in the cover member is formed by covering a top surface of the pot with a metal heat insulating plate provided with a heating member, and at a fixed distance from the metal heat insulating plate. An outer cover, a substantially ring wall extending below the outer cover and partially having a wiring hole, a pot packing sandwiched and fixed between the metal heat insulating plate and the substantially ring wall, and wiring of the substantially ring wall. By forming the cover member with the closing member that closes the hole, it is possible to form a heat retaining space layer in the lid member that does not communicate with the outside air.

According to a third aspect of the present invention, a heat insulating member such as glass wool or styrene is provided in the heat insulating space layer to suppress the movement of air up and down, and a part of the heat insulating member is connected to the wiring hole. By inserting or press-contacting the wiring hole into a structure that also serves as the closing member function, the wiring hole can be closed without the closing member, so that the number of components can be reduced and the amount of assembly work can be reduced.

According to a fourth aspect of the present invention, the wiring hole is closed by an extension piece extending from the metal heat insulating plate.
Since the wiring hole can be closed without the closing member, the number of components can be reduced, and the amount of assembly work can be reduced.

[0013]

(Embodiment 1) A first embodiment of the present invention will be described with reference to FIGS.

As shown in the figure, a bottomed tubular pot 22 is detachably provided in the rice cooker main body 21, and an outer lid 23 and a metal heat insulating plate 26 (material) are provided on the upper surface of the rice cooker main body 21. A lid member 36 made of aluminum is attached so as to be openable and closable.
A metal heat insulating plate 26 having a lid heater 25 and a lid sensor 30 disposed on the upper surface thereof is held by a substantially ring wall 27 extending from the outer lid 23. Between the metal heat insulating plate 26 and the substantially ring wall 27, a silicone rubber pot packing 28 is provided.
A steam plate packing 29 made of silicone rubber is disposed between the metal heat insulating plate 26 and the exhaust port 24, and a pot packing 28
Seals the metal heat insulating plate 26 and the substantially ring wall 27, seals the metal heat insulating plate 26 and the upper flange portion of the pot 22 when the lid member 36 is closed, and the steam plate packing 29 seals the metal heat insulating plate 26. And the steam port 24 are sealed, and the lid member 3
6 does not allow steam to enter.

The substantially ring wall 27 is provided with a wiring hole 32 for wiring a lead wire 31 for supplying power to the lid heater 25 provided on the upper surface of the metal heat insulating plate 26. −
The wire 31 is wired from the inside of the cover member 36 to a control board (not shown) disposed below the inside of the rice cooker main body 21. A closing member 35 is attached to the outer cover 23 so as to close the wiring hole 32 in the wiring hole 32, and a space 33 (hereinafter referred to as a space 33) closed by the metal heat insulating plate 26, the substantially ring wall 27, and the closing member 35 in the cover member 36. A heat insulating member 34 (glass wool, styrol, etc.) is provided in the heat insulating space layer.

In the above configuration, when the rice is kept warm,
The temperature of the rice in 2 is detected by a lid sensor 25 and a bottom sensor (not shown) disposed on the bottom of the pan 22,
The lid heater 25, the bottom heater, and the side heater (not shown) are controlled by the microcomputer to control power by about 71%.
It is kept at ° C.

The metal heat insulating plate 26 on the lower surface of the lid member 36 is
Although the steam emitted from the rice inside is directly received, the metal heat insulating plate 26 is not cooled by the inflow of outside air from the wiring hole 32 due to the closed heat insulating space layer 33 of the cover member 36, and the outside of the outer cover 23. Reduce the release of heat to the
Further, by disposing the heat insulating member on the upper surface of the metal heat insulating plate 26, it is possible to reduce the heat release from the metal heat insulating plate 26 to the heat insulating space layer 33 and to release the heat to the heat insulating space layer 33 side of the lid heater 25. By reducing the amount, the amount of condensation of the steam in the pot 22 on the metal heat insulating plate 26 is reduced, and the heat generation of the lid heater 25 is efficiently transmitted to the metal heat insulating plate 26 to reduce the power supply and reduce the power consumption. be able to.

(Embodiment 2) A second embodiment of the present invention will be described with reference to FIGS.

FIGS. 3 and 4 show a configuration in which the closing member 35 for the wiring hole 32 for closing the heat insulation space layer 33 and the outside air is eliminated, and an existing component also serves as a closing mechanism.

FIG. 3 shows that the wiring hole 32 is closed by extending the heat insulating member 34 into the wiring hole 32, and FIG. 4 shows that the extending piece 37 is extended from the mounting rib of the substantially ring wall 27 of the metal heat insulating plate 26 to form the wiring hole 32. This is a configuration that closes. Neither configuration requires a dedicated member for closing the wiring hole 32, so that the number of parts can be reduced, and the amount of assembling work can be reduced, so that costs can be reduced in both the parts material and the assembling. .

[0021]

As described above, the first aspect of the present invention provides
A rice cooker main body, a pot removably stored in the rice cooker main body, and a lid member located above the pan and openably and closably covering an upper opening of the rice cooker main body. By forming the heat retaining space layer that suppresses the movement of air so as to face the opening of the pot, it is possible to eliminate the dread of rice caused by dew condensation during the heat retention and to further reduce the power consumption during the heat retention.

According to a second aspect of the present invention, the heat insulating space layer provided on the lid member is formed by covering a top surface of the pot with a metal heat insulating plate provided with a heating member, and a predetermined distance from the metal heat insulating plate. An outer lid to be formed, a substantially ring wall extending below the outer lid and partially having a wiring hole, a pot packing sandwiched and fixed between the metal heat insulating plate and the substantially ring wall, and the substantially ring wall By forming with the closing member that closes the wiring hole of
It is possible to form a heat retaining space layer in the lid member that does not communicate with the outside air.

According to a third aspect of the present invention, a heat insulating member such as glass wool or styrene is provided in the heat insulating space layer to suppress the movement of air up and down, and a part of the heat insulating member is formed as a part of the heat insulating member. By inserting or pressing into the wiring hole and having a configuration that also serves as the closing member function, the wiring hole can be closed without the closing member, thereby reducing the number of components, and
The amount of assembly work can be reduced.

According to a fourth aspect of the present invention, a wiring hole is provided.
By closing with the extension piece extended from the metal heat insulating plate, the wiring hole can be closed without the closing member, so that the number of components can be reduced and the amount of assembly work can be reduced.

[Brief description of the drawings]

FIG. 1 is a cutaway sectional view of a rice cooker according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a lid member of the rice cooker.

FIG. 3 is a sectional view of a main part of a lid member according to a second embodiment of the present invention.

FIG. 4 is a sectional view of an essential part of another lid member of the rice cooker.

FIG. 5 is a cutaway sectional view of a conventional rice cooker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Rice cooker main body 22 Pot 23 Outer lid 25 Heating member (lid heater) 26 Metal heat insulating plate 27 Substantially ring wall 28 Pot packing 32 Wiring hole 33 Heat insulating space layer 34 Heat insulating member 35 Closure member 36 Cover member 37 Extension piece

Claims (4)

[Claims] 1. A rice cooker main body, a pan removably stored in the rice cooker main body, and a lid member located above the pan and covering an upper opening of the rice cooker main body so as to be openable and closable. ,
The rice cooker, wherein the lid member is provided with a heat retaining space layer that suppresses the movement of air, facing the opening of the pan. 2. A heat insulation space layer includes a metal heat insulation plate that covers the upper surface of the pot and has a heating member, an outer lid formed at a predetermined distance from the metal heat insulation plate, and a lower part extending from the outer lid. A substantially ring wall having a wiring hole on a part thereof, a pot packing sandwiched and fixed between the metal heat insulating plate and the substantially ring wall, and a closing member for closing the wiring hole in the substantially ring wall. Item 4. The rice cooker according to Item 1. 3. The heat insulation space layer is provided with a heat insulation member such as a glass wool for suppressing the movement of air up and down, and a part of the heat insulation member is inserted or pressed into a wiring hole to also serve as a closing member. The rice cooker according to claim 2, wherein 4. The rice cooker according to claim 2, wherein the wiring hole is closed by an extension piece extending from the metal heat insulating plate.