JP3022338B2 - Electric rice cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric rice cooker for heating an inner pot from above and below.

[0002]

2. Description of the Related Art In a conventional electric rice cooker, a hot plate type heater or an electromagnetic induction coil is used as a rice cooker as a main heating source when rice is cooked by heating an inner pot from the bottom. Or a lid body is provided with a resistance heater to serve as an auxiliary heating source during rice cooking.

[0003]

However, in the case of the above-mentioned conventional electric rice cooker, when the rice is cooked, only the heating from the rice cooker in the water absorption step or the cooking step causes the stored rice to become a heat insulating material and heat is generated. It is difficult to be transmitted upward, and the resistance heater provided on the side of the inner pot or on the lid is insufficient in heating amount. Therefore, in the water absorption process, although water absorption has progressed in the lower part, water absorption is insufficient in the upper part,
In the cooking process, uneven cooking occurred due to a temperature difference between the upper and lower sides.

[0004] The present invention has been made in view of the above-mentioned points, and the unevenness in water absorption and cooking is reduced by heating from the side or upper portion of the inner pan with a halogen heater having excellent responsiveness and capable of heating over a wide range. It is an object of the present invention to be able to perform rice cooking that does not occur.

[0005]

According to a first basic configuration of the present invention, an electric rice cooker having a rice cooker for heating an inner pot stored in a container body from the bottom as a means for solving the above-mentioned problems. In the container, a side heater made of a halogen heater is disposed above the inner peripheral surface of the container body, a light transmitting plate is disposed on the inner peripheral side of the side heater, and a light reflecting plate is disposed on the outer peripheral side. So that it can be heated from the side of the pot,
In this way, temperature unevenness in the inner pot is eliminated.

In a second basic configuration of the present invention, as a means for solving the above-mentioned problems, in the electric rice cooker provided with a rice cooker for heating an inner pot stored in the container body from the bottom portion, an opening in the lid covering of the light transmitting plate to the lower surface side of and lid heater disposed a lid heater consisting of a halogen heater, disposed then together the light reflecting plate on the upper surface
Next, in the heat retaining step, a lid cover made of the halogen heater is used.
The inner pot is heated from above by energizing the heater with a predetermined amount of current, so that temperature unevenness in the inner pot is eliminated.

In the third basic configuration of the present invention,
As a means to solve the problem
Electric rice cooker with rice cooker that heats the inner pot from the bottom
In the above, the lid covering the opening of the container body,
A steam discharge passage for discharging steam from the pot to the outside,
From the halogen heater, surround the steam discharge passage.
A lid heater is provided, and on the lower side of the lid heater.
The light transmitting plate is provided with a light reflecting plate on the upper surface side, so that the inside of the inner pot can be heated from above, so that temperature unevenness in the inner pot can be eliminated.

[0008] In a fourth basic configuration of the present invention, as means for solving the above-mentioned problems , a housing accommodated in a container body is provided.
Electric rice cooker with rice cooker that heats the inner pot from the bottom
The lid covering the opening of the container body,
And a lid heater consisting of
With a light transmitting plate on the front side and a light reflecting plate on the top side
An opening / closing sensor for detecting the opening / closing operation of the lid is additionally provided.
Then, the open state of the lid was detected by the open / close sensor.
Sometimes, the power to the lid heater is stopped,
So that the inside of the inner pan can be heated from above,
Temperature unevenness at the time of opening the lid
To prevent the lid heater from being energized.

In the second to fourth basic configurations of the present invention, an inner lid is provided on the lower surface of the lid to cover the opening of the inner pot, and radiant heat from the lid heater is irradiated on the upper surface of the inner lid. In this case, the inside of the inner pot can be heated indirectly from above, so that it is possible to more uniformly heat the inner pot and to prevent dew on the lid body side, which is preferable.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

First Embodiment (Corresponding to Claim 1) FIG. 1 shows an electric rice cooker according to a first embodiment of the present invention.

This electric rice cooker is configured so that the inner pan 3 can be set therein and has a double-structured container body 1 having a space portion 4 and an upper opening of the container body 1 is openably and closably covered. And a lid 2.

The container body 1 has a body 5a serving as an outer wall.
And an outer case 5 made of a synthetic resin (for example, polypropylene) integrally having a bottom portion 5b serving as a bottom wall, and a synthetic resin (for example, polypropylene) joined to the upper edge of the outer case 5. And a metal bottomed cylindrical inner case 7 engaged with the inner peripheral edge of the shoulder member 6, and is surrounded by the outer case 5, the shoulder member 6 and the inner case 7. The space 4 is formed. Note that the inner pan 3 is set in the inner case 7 so as to be removable.

On the bottom surface of the inner case 7, a sheath heater 1 is placed in a hot plate 9 made of a good conductor (for example, aluminum alloy).
0 is a hot plate type rice cooker 8 embedded with a screw 11
It is fixed by. The inner pan 3 is housed in the container body 1 while being placed on the hot platen 9.

A hole 12 penetrating vertically is formed at the center of the hot platen 9, and the hole 12 has a temperature-sensitive portion (for example,
A center sensor 13 acting as a temperature detecting means so as to face the thermistor) is provided so as to penetrate the bottom surface of the inner case 7.

On the other hand, the lid 2 has an upper plate 14 made of synthetic resin (for example, made of polypropylene) constituting the outer surface and a lower part of a doughnut made of synthetic resin (made of, for example, polypropylene) constituting the inner peripheral surface. A lower plate 15 and a metal radiator plate 16 attached to the lower plate 15.
A hollow portion 18 for accommodating a heat insulating material 17 is formed between the upper and lower plates 15 and 16.

The lid 2 is rotatably and detachably attached to one side of the shoulder member 6 via a hinge pin 19.

At the center of the lid 2, there is formed a tubular portion 20 which is suspended from the upper plate 14, and the inside of the tubular portion 20 discharges steam generated during rice cooking to the outside. And a steam discharge passage 21. A pressure regulating cylinder 23 is attached to a lower end of the tubular section 20 via a seal packing 22.

The inner peripheral edge of the heat radiating plate 16 is
The lower end of the lower plate 1 is supported by the lower plate 1 while being joined to and supported by the lower end of the lower plate 1 via the seal packing 22.
5 is connected to the inner peripheral edge of seal 5 via seal packing 24. When the lid 2 is closed, the seal packing 24 is pressed against the upper edge of the inner pot 3 to maintain airtightness.

On the upper surface of the radiator plate 16, the radiator plate 16
A lid heater 25 for preventing dew condensation and growth of Oneva by heating the heater is mounted.

An annular step 27 having a large outer diameter is formed on the upper part of the inner case 7.
The upper end of 7 is screwed to the shoulder member 6.
A side heater 28 for heating the inner pot 3 from the upper side is disposed in the annular step portion 27. As the side heater 28, an annular halogen heater is adopted, a light reflecting plate 29 for reflecting light emitted from the side heater 28 is provided on the outer peripheral surface side, and the side heater 28 is provided on the inner peripheral surface side. A light transmission plate (for example, a glass plate) 30 that transmits light emitted from the light source is provided. In addition,
The light reflecting plate 29 is attached with its upper end screwed to the shoulder member 6, while the light transmitting plate 30 is attached by being sandwiched between the shoulder member 6 and the lower edge of the annular step 27. Have been.

With this configuration, the light radiated from the side heater 28 passes through the light transmitting plate 30 as it is, and is reflected by the light reflecting plate 29, passes through the light transmitting plate 30 and passes through the inner pot 3. It will be radiated to the side, and the inner pot 3 will be heated from the side. Further, the halogen heater employed as the side heater 28 has extremely good responsiveness at the time of ON / OFF, so that temperature control becomes easy.

On the front side of the container body 1 (ie, on the side provided with the lock mechanism 26 for locking the lid 2), a control for controlling the energization of the rice cooker 8, the side heater 28, the lid heater 25 and the like. Control board 3 with built-in unit
1 and a switch board 32 having various switches (for example, a rice cooker switch, a reservation switch, a warming switch, etc.)
Are arranged.

On the front side of the shoulder member 6, there is provided an operation panel 33 inclined obliquely downward.

As shown in FIG. 2, the operation panel 33 includes various switches necessary for cooking rice (for example, a rice cooker switch 34, a cancel switch 35, a heat retention switch 36, a reservation switch 37, a timer set switch 38, A set switch 39, a minute set switch 40, a menu switch 41, etc., a rice cooker switch 34, a rice cooker indicator (e.g., LED) 42 for displaying an ON state of the reservation switch 37, and a heat indicator (eg, LE)
D) 43 and a reservation indicator (for example, LED) 44;
A liquid crystal display device 45 is provided for displaying a rice cooking menu, a switch operation level, a timer set time, and the like selected by each of the switches so that the user can visually recognize the menu.

The liquid crystal display device 45 includes, for example, (A) a display of white rice, new rice, and the like, and (B) a rice cooker menu having different hardnesses such as sushi, cooked rice, brown rice, and rice porridge. Various kinds of display such as display and (C) timer set time are performed. Various menus and porridge thickening (weak / medium / strong) are indicated by arrows 46 and 47, respectively.
In addition, the display of the timer set time is performed by numeral 48, respectively.

Next, a configuration of an electric control circuit section in the electric rice cooker according to the present embodiment will be described based on an electric circuit diagram shown in FIG. Parts corresponding to those shown in FIGS. 1 and 2 are denoted by the same reference numerals.

Reference numeral 49 denotes an AC 100 V commercial power supply, and a current from the commercial power supply 49 is supplied to the microcomputer control unit 51 via the stabilized power supply circuit 50.

The control signals from the microcomputer control unit 51 are transmitted to the rice cooker drive circuit 52, the side heater drive circuit 53, and the lid heater drive circuit 54.
To the rice cooker 8 and the side heater 28 via the relays 55 and 56 and the triac 57, respectively.
The operation of the lid heater 25 is controlled.

In the drawing, reference numeral 58 denotes a reset circuit, 59
Is an oscillation circuit, 60 is a backup battery, and 61 is a buzzer circuit.

The microcomputer control unit 51 has a function as heating amount control means for controlling the heating amount of the rice cooking heater 8, the side heater 28, and the lid heater 25 in accordance with the temperature detected by the center sensor 13.

Next, a case where rice is cooked using the electric rice cooker having the above-described structure and the rice is kept warm after cooking is described with reference to FIG.
8 and a time chart shown in FIG. 9 will be described in detail.

[0033] Until start determination speed (I) water process and focus (see the flowchart of FIG. 4) First, the rice switch 34 is determined to have been ON at step S _1, rice is cooking indicator in step S ₂ LEDs 42 There is lit, the count of the t ₁ timer (timed = 600 seconds) is started in step S _3.

[0034] Then, (in other words, t ₁ = 600 seconds elapsed) t ₁ timer is incremented in step S ₁₁ until it is determined the a, cooking heater 8 in step S ₄ ~ Step S _10, the side surface Heating of the heater 28 and the lid heater 25 is controlled to a predetermined output value, and water absorption is performed to maintain the temperature T of the inner pan 3 at the water absorption temperature T ₀ (for example, 40 ° C.) in FIG. 9 (water absorption step). That is, if it is determined that T> T ₀ in step S _4, cooking heater 8 in step S ₅ ~ step S _7, the side heater 28 and the lid heater 25 is turned OFF, T ≦ T in step S _{4 0} and if it is determined, the cooking heater 8 in step S ₈ ~ step S _10, the side heater 28 and the lid heater 25 is turned oN.

[0035] Then, if the determination is positive at step S ₁₁ (that is, when the water absorption time t ₁ is determined to have elapsed), rice heater 8 at step S ₁₂ ~ step S _14, the side heater 28 and the lid heater 25 is energized controlled to a predetermined output value, the inner pot temperature T is heated until it is determined that elevated if the number of judgment start temperature T ₁ (see FIG. 9) in step S _15. At this time, the output value of the rice cooking heater 8 is 14/14 (that is, flow power), the output value of the side heater 28 is 10/14, and the lid heater 25 is O
The state is set to the FF state.

[0036] If it is determined that T ≦ T ₁ in step S _15, the process proceeds to step S ₁₆ ~ step S _18, the output value of the cooking heater 8 is kept in 14/14 (i.e., Furopawa), the side heater 28 and The lid heater 25 is turned off to prepare for the subsequent total number determination.

(II) Total Number Determination (Refer to the flowchart in FIG. 5) In the total number determination, a predetermined temperature range (for example, 68 ° C. to 88 ° C.) is equally divided at predetermined intervals (for example, 20 equal parts) in the cooking process. Then, the control is performed by comparing the integrated value of the OFF time of the rice cooker 8 when controlling the inner pot temperature T so as to be the respective temperature.

[0038] That is, to start the t ₂ timer (timed = 10 seconds) in step S _19, compared with the inner bowl temperature T and the set value Tm (m = 1 to 20) is made in step S _20. Here, when it is judged that T ≦ Tm, ON in cooking heater 8 output values = 14/14 in step S ₂₁
It is, T> when it is determined that the Tm, cooking heater 8 is turned OFF in step S _24, OF in step S ₂
The integrated value tn of the F time is stored. Step S ₂₀
Regardless of the decision, the side heater 28 and the lid heater 25 is turned OFF in step S ₂₂ and step S _23.

[0039] Then, (in other words, t ₂ = 10 seconds has elapsed) t ₂ timer has counted up in step S ₂₆ if it is determined that, m = 2 in step S ₂₇
0 and is turned by whether the determination, wherein the process proceeds to step S ₂₈ if the determination is negative, the process returns to step S ₁₉ as m = m + 1, and repeats the subsequent processing. By repeating the same processing until m = 20, an integrated value tn of the OFF time of the rice cooker 8 is obtained.

(III) Cooking Step (See Flowchart in FIG. 6) As described above, the integrated OFF time t of the rice cooker 8
When n is determined, the set value A, B, and comparison of C is made in step S ₂₉ to step S _31. Where A <B
<C.

[0041] Then, in step S ₁₉ tn <A
(I.e., the amount of contents large) when it is determined that, in step S ₃₂ to step S _34, the output value of the cooking heater 8 12/14, the output value of the side heater 28 8/1
4, the output value of the lid heater 25 are respectively set to 8/14, Step A ≦ tn <B in S ₃₀ (i.e., the amount of contents inside) when it is determined that the step S ₃₅ to step S _{At 37} , the output value of the rice cooker 8 is 10 /
14, output value of side heater 28 is 6/14, lid heater 2
5 are set to 8/14, respectively, and step S
If it is determined in step ₃₁ that B ≦ tn <C (that is, the amount of contents is small), the output value of the rice cooker 8 is 8/14 and the output of the side heater 28 in steps S _{38 to} S ₄₀ . The value is 4/14, and the output value of the lid heater 25 is 8/14.
Each is set to 14, tn ≧ In step S ₃₁
C (that is, the amount of the contents is minimal)
In step S ₄₁ to step S _43, the output value of the cooking heater 8 6/14, the output value of the side heater 28 is 2 /
14, the output value of the lid heater 25 is set to 8/14, respectively.

[0042] Based on the energization control by the output value as described above, cooking heater 8, is heated by the side heater 28 and the lid heater 25 is made until T ≦ T ₂ in step S ₄₄ (for example, 130 ° C.). In other words, as shown in FIG. 9, it is possible to cook at a stretch to the cooking temperature T ₂ (= 130 ° C.).

[0043] Then, negative (i.e., T> T ₂ and determination) in step S ₄₄ when the are, rice heater 8 at step S ₄₅ ~ step S _47, the side heater 28 and the lid heater 25 are both OFF cook Raising is finished,
Move to the next steaming step.

[0044] In (IV) steaming process (see the flowchart in FIG. 7) steaming step, first steaming time in step S ₄₈ (e.g., 14 minutes) display is made, step S
₄₉ to steaming blazing fire in step S ₅₇ (i.e., steaming in a state of holding the inner bowl temperature T to a predetermined value = 110 ° C.) is performed.

[0045] That is, the temperature T ₃ (e.g., 110 ° C.) steaming the inner bowl temperature T in step S ₄₉ is made comparison of, when it is determined that T> T _3, in step S ₅₀ ~ Step S ₅₂ cooking heater 8, the side heater 28 and the lid heater 25 is turned OFF, when it is determined that T ≦ T ₃ is cooking heater 8 at step S ₅₃ ~ step S _55, the output value of the side heater 28 and the lid heater 25 Both are set to 2/14. Then, in step S _56, made display subtraction time with steaming time is decremented, the process is repeated until it is determined that the steaming time = 0 in step S _57.

[0046] If an affirmative decision is made in step S _57,
Cooking heater 8 at step S ₄₈ ~ step S _60, the side heater 28 and the lid heater 25 is turned OFF, cooking termination buzzer notification is made in step S _61, rice indicator in step S ₆₂ (i.e., rice LED) 42 is turned off Then, the rice cooking is completed, and the process proceeds to the next warming step.

(V) Insulation Step (See Flowchart in FIG. 8) When the insulation step is started, in step _S63 , the insulation indicator lamp (ie, the insulation LED) 43 is turned on.
_{From 64} to step _S70 , heat retention control is performed.

That is, in step _S64 , a comparison is made between the inner pot temperature T and the heat retaining temperature T ₄ (for example, 70 ° C.).
If it is determined that ≦ T ₄ , the output value of the rice cooker 8 is reduced to 1/14, the output value of the side heater 28 is reduced to 1/14, and the output value of the lid heater 25 is determined in steps S ₆₅ to S ₆₇ . Is set to 2/14. On the other hand, if it is determined that T> T _4, at step S ₆₈ ~ step S _70,
The rice cooking heater 8 and the side heater 28 are turned off, and the output value of the lid heater 25 is set to 2/14. That is, the inner pot temperature T is maintained at a retained temperature T _4.

As described above, in the present embodiment, a halogen heater is employed as the side heater 28, so that a wide range of heating can be performed from the side of the inner pot 3, and the heating state of the inner pot 3 can be improved. Will be uniformed in the upper and lower directions.

For example, as shown in FIG. 9, when a conventional resistance heater is used for the side heater 28, the actual temperature of the inner pot 3 detected by the center sensor 13 in the water absorption process and the cooking process (solid line) Although the side temperature of the inner pan 3 (shown by a dotted line) is considerably lower than that of the inner pan 3 (shown by a dotted line), when a halogen heater is used for the side heater 28 as in the present embodiment, the side temperature of the inner pan 3 (shown by a chain line) ) Approaches the actual temperature of the inner pot 3 detected by the center sensor 13 (shown by a solid line). Therefore, uneven water absorption and uneven cooking do not occur, and delicious rice can be cooked.

Further, since the halogen heater has a characteristic that the response at the time of ON / OFF is extremely good, there is also an advantage that the control at the time of cooking rice and at the time of keeping the temperature can be performed finely.

Second Embodiment (Corresponding to Claims 2 to 4) FIG. 10 shows an electric rice cooker according to a second embodiment of the present invention.

This electric rice cooker differs from that of the first embodiment only in that a resistance heater is used as the side heater 28 and a halogen heater is used as the lid heater 25. Therefore, the upper structure of the inner case 7 and the structure of the lid 2 are different, and these different points will be described below.

The upper part of the inner case 7 has a cylindrical shape like the conventional case, and a side heater 28 made of a resistance heater is attached to the upper part of the outer periphery. Further, a heat insulating material 62 is provided outside the side heater 28.

The halogen heater, which is the lid heater 25, is disposed in the lid 2 at a position surrounding the vapor discharge passage 21, and a light reflection plate 63 is provided on the upper side and a light transmission plate is provided on the lower side. 64 are provided. Reference numeral 65 denotes a heat shield provided above the light reflection plate 63.

The light transmitting plate 64 is screwed to the inner peripheral edge of the lid lower plate 15 with a resin ring 66 interposed therebetween.

In order to prevent the lid heater 25 from being turned on when the lid 2 is opened, an open / close sensor 67 for detecting the open / close operation of the lid 2 is provided. The reed switch shown in FIG. 11 or the microswitch shown in FIG. 12 is employed.

That is, when a reed switch is employed as the open / close sensor 67, the reed switch 67 is provided on the shoulder member 6 and the magnet 6 is provided at a position corresponding to the lid 2.
8 are arranged. When a micro switch is employed as the open / close sensor 67, the micro switch 67 is provided below the shoulder member 6, and a projection 69 for turning on the micro switch 67 is integrally formed at a position corresponding to the lid lower plate 15. Has formed. Reference numeral 70 denotes a packing provided between the protrusion 69 and the micro switch 67.

The control circuit in the electric rice cooker according to the present embodiment has the configuration shown in FIG. 13, and differs from the first embodiment in that the side heater 28 is controlled by the triac 71 and the lid heater 25 is controlled. The only difference is that the relay 72 is controlled by the relay 72 and that the open / close sensor 67 is provided between the relay 72 and the lid heater 25.

The rice cooker execution flowchart of the electric rice cooker according to the present embodiment is as shown in FIGS. 14 to 18 and is substantially the same as that in the first embodiment, but the steps in FIG. output values of the lid heater 25 in S ₁₃ is set to 10/14, and that the side heater 28 is turned OFF in step S _14, FIG. 1
And that the output value of the lid heater 25 is set to 8/14 in step S ₅₅ in 7, only are different from the flowchart of FIG. 4 and FIG. Other description is omitted.

In this embodiment, it is needless to say that the same operation and effect as those of the first embodiment can be obtained.

Third Embodiment (Corresponding to Claims 2 to 5) FIG. 19 shows an electric rice cooker according to a third embodiment of the present invention.

In this case, the only difference from the second embodiment is that an inner lid 71 that covers the opening of the inner pot 3 is provided on the inner surface side of the lid 2. In this way, the inside of the inner pot 3 can be indirectly heated from above, so that the inner pot 3 can be heated more uniformly and dew on the lid 2 can be prevented. The other configuration and operation and effect are the same as those in the second embodiment, and thus the description is omitted.

The present invention can be applied to, for example, a device using an electromagnetic induction coil other than a device using a hot-plate type rice cooker as an inner pot heating means.

[0065]

According to the first basic configuration of the present invention, the side heater composed of a halogen heater enables heating from the side surface of the inner pot, thereby eliminating temperature unevenness in the inner pot. In addition, the heating state of the inner pot is made uniform in the upper and lower portions, and there is an effect that delicious rice can be cooked.

Further, since the halogen heater has a characteristic that the response at the time of ON / OFF is extremely good, there is also an effect that the control at the time of cooking and keeping the temperature can be finely performed.

Further, since the light reflecting plate and the light transmitting plate are provided on the inner pot side and the opposite inner pot side of the halogen heater, radiant heat from the halogen heater can be efficiently supplied to the inner pot side. .

According to the second basic configuration of the present invention, the halo
A lid heater consisting of a gen heater allows heating from above the inner pot.
So that it can be heated, and
So that the heating condition of the inner pan is
To cook delicious rice.
There is an effect that can be.

When the halogen heater is turned ON / OFF,
With the characteristic that the response in the
Control during cooking and keeping warm
There is also an effect that it can be done well.

The lower side of the halogen heater and
A light reflection plate and a light transmission plate are provided on the top side, respectively.
Therefore, the radiant heat from the halogen heater can be efficiently
Can be given to

In addition, a halogen heater is not used in the warming process.
Power is supplied to the lid heater with a predetermined amount of power.
Therefore, the heat retention control becomes easy.

According to the third basic configuration of the present invention, steam
A lid heater consisting of a halogen heater surrounds the discharge passage.
And light transmission on the lower side of the lid heater.
Since the plate and the light reflection plate are arranged on the top side,
So that it can be heated from above,
There is an effect that temperature unevenness can be eliminated.

According to the fourth basic structure of the present invention, the lid
An open / close sensor that detects the open / close operation of the
When the sensor detects that the lid is open,
Turn off the power to the lid heater consisting of the gen heater
The lid heater when opening the lid.
There is an effect that electricity can be prevented.

When an inner lid is provided on the lower surface of the lid to cover the opening of the inner pan, and radiant heat from a halogen heater serving as a lid heater is applied to the upper surface of the inner lid, the inside of the inner pan is illuminated. Heating can be performed indirectly from above, so that heating can be performed more uniformly and dew on the lid can be prevented.

[Brief description of the drawings]

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

FIG. 2 is a front view of an operation panel of the electric rice cooker according to the first embodiment of the present invention.

FIG. 3 is a circuit diagram showing a connection state of electric elements in the electric rice cooker according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing the content of a water absorption step when rice is cooked by the electric rice cooker according to the first embodiment of the present invention.

FIG. 5 is a flowchart showing the content of the determination of the total number when the electric rice cooker according to the first embodiment of the present invention performs rice cooking.

FIG. 6 is a flowchart showing a content of a cooking step when the electric rice cooker according to the first embodiment of the present invention performs rice cooking.

FIG. 7 is a flowchart showing the contents of a steaming step when rice is cooked by the electric rice cooker according to the first embodiment of the present invention.

FIG. 8 is a flowchart showing the contents of a heat retaining step when rice is cooked by the electric rice cooker according to the first embodiment of the present invention.

FIG. 9 is a time chart showing changes in the temperature of the inner pot when the electric rice cooker according to the first embodiment of the present invention performs rice cooking.

FIG. 10 is a longitudinal sectional view of an electric rice cooker according to a second embodiment of the present invention.

FIG. 11 is an enlarged cross-sectional view illustrating an example of an open / close sensor mounting portion in the electric rice cooker according to the second embodiment of the present invention.

FIG. 12 is an enlarged sectional view showing another example of the open / close sensor mounting portion in the electric rice cooker according to the second embodiment of the present invention.

FIG. 13 is a circuit diagram showing a connection state of electric elements in the electric rice cooker according to the second embodiment of the present invention.

FIG. 14 is a flowchart showing the contents of a water absorption step when rice is cooked by the electric rice cooker according to the second embodiment of the present invention.

FIG. 15 is a flowchart showing the content of the determination of the total number when the rice cooker according to the second embodiment of the present invention executes rice cooking.

FIG. 16 is a flowchart showing the contents of a cooking step when rice is cooked by the electric rice cooker according to the second embodiment of the present invention.

FIG. 17 is a flowchart showing the contents of a steaming step when rice is cooked by the electric rice cooker according to the second embodiment of the present invention.

FIG. 18 is a flowchart showing the contents of a heat retaining step when rice is cooked by the electric rice cooker according to the second embodiment of the present invention.

FIG. 19 is a longitudinal sectional view of a main part of an electric rice cooker according to a third embodiment of the present invention.

[Explanation of symbols]

1 is a container body, 2 is a lid, 3 is an inner pot, 8 is a rice cooker,
25 is a lid heater, 28 is a side heater, 29 and 63 are light reflection plates, 30 and 64 are light transmission plates, and 71 is a middle lid.

Claims (5)

(57) [Claims] 1. An electric rice cooker provided with a rice cooker for heating an inner pot stored in a container body from a bottom portion, wherein a side heater made of a halogen heater is disposed on an inner peripheral surface of the container body. An electric rice cooker, wherein a light transmitting plate is disposed on an inner peripheral side of the side heater and a light reflecting plate is disposed on an outer peripheral side of the side heater. 2. An electric rice cooker provided with a rice cooker for heating an inner pot stored in a container body from the bottom, wherein a lid covering an opening of the container body has a lid heater comprising a halogen heater. It was disposed and a light transmissive plate to the lower surface side of the lid heater, with arranging the light reflecting plate on the upper surface side, incubating process
In the lid heater comprising the halogen heater
An electric rice cooker characterized in that electricity is supplied at an amount of electricity supplied . 3. The inner pot stored in the container body is removed from the bottom.
An electric rice cooker having a rice cooker for heating, wherein
The lid covering the opening of the container body contains steam from the inner pan.
A steam discharge passage for discharging air to the outside, and the steam discharge passage.
A lid heater consisting of a halogen heater so as to surround the road
While arranging, a light transmitting plate on the lower surface side of the lid heater,
Electrical cooker characterized in that a light reflecting plate on the upper side. 4. The inner pot contained in the container body is removed from the bottom.
An electric rice cooker having a rice cooker for heating, wherein
The lid that covers the opening of the container
And a light transmission on the lower surface side of the lid heater
A plate, a light reflecting plate is arranged on the upper surface side, and the lid
An open / close sensor that detects the open / close operation of the
When the sensor detects the open state of the lid,
The power supply to the lid heater is stopped.
Electric rice cooker. 5. An inner lid is provided on a lower surface of the lid to cover an opening of the inner pan, and radiant heat from the lid heater is applied to an upper surface of the inner lid. Item 5. An electric rice cooker according to any one of Items 2 , 3 and 4 .