JP2570510B2 - Electric porridge pot - 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 porridge pot .

[0002]

2. Description of the Related Art Conventionally, rice cookers have been widely used in which rice and water contained in a rice cooker are heated by a rice cooker to cook rice, and the cooked rice in the cooker is kept warm by a heater. Used.

[0003]

However, diversification of eating habits may require eating only porridge, and it may be necessary to cook rice and porridge at the same time in order to meet the preferences of each family member. There is. In such a case, even if it is the above-mentioned multifunctional rice cooker,
When cooking rice or keeping rice warm, rice porridge cannot be cooked at the same time, and it cannot meet the diversified consumer needs alone. Therefore, another rice cooker is required to cook the porridge.

[0004] On the other hand, when only rice porridge is required, the above-mentioned multifunctional rice cooker has many unnecessary components for preventing spillage, and has a problem that the configuration is too complicated. Also, when keeping the porridge warm,
In terms of efficiency and safety, rice cookers have high heat retention performance
In addition, a configuration with high heat insulation performance for the outside is desired.
You. However, in the above-mentioned multi-function rice cooker,
There are many unnecessary configurations to obtain heat retention performance suitable for yu,
There is a problem that the configuration is too complicated. Therefore, an object of the present invention is to solve the above-described technical problem and to add a simple configuration.
An object of the present invention is to provide an electric porridge pot that has high thermal efficiency and can cook porridge easily and safely .

[0005]

An electric rice porridge pot according to the present invention for achieving the above object comprises a rice cooker housed in a container.
In an electric porridge pot, the body is made of synthetic resin
The outer case that forms the body and the inner case with a gap
An inner case made of metal material that forms the inner container of a rice cooker
In the opening edge of the rice cooker, a brim portion extending in a direction away from the axis of the rice cooker and facing the outside of the container body is formed,
The collar is formed smaller than the outer diameter of the shoulder of the body,
An upwardly facing annular step is formed, a lid is placed on the annular step, a gap is formed between the lid and a rising wall of the annular step , and the rice cooker is brought close to the inner case. To store
Thus, an annular space is formed between the inner case and the inner case .

[0006]

According to the above construction, the opening edge of the rice cooker faces the outside of the container, and the brim portion extending in the direction away from the axis of the rice cooker and facing the outside of the container has the opening edge. Is formed, it is possible to effectively prevent spillage into the body. In addition, the brim of the rice cooker is formed with a smaller diameter than the outer diameter of the shoulder of the body, so it is difficult to directly touch the brim when moving the electric porridge to the dining table, etc., and the body shoulder is a safety guard. It becomes a highly secure one.

In addition, an upwardly-facing annular step is formed on the flange, and a lid is placed on the annular step, and a gap is formed between the lid and a rising wall of the annular step. The steam in the rice cooker can escape from the gap between the body and the rising wall, and even if a spill occurs from between the brim portion of the rice cooker and the lid, the rising wall can prevent the outflow of the spill. .

In addition, the outer case is made of synthetic resin.
High heat insulation properties,
Demonstrates high heat resistance because the case is made of metal
be able to. Moreover, there is a gap between the inner case and the outer case.
And a rice cooker for the inner case
Are stored in a state where an annular space is formed.
Inner case with metallic material
Demonstrate high heat-insulating effect in spite of its composition
Can be.

In addition, the rice cooker is close to the inner case and has the above-mentioned annular shape.
Because it forms a space, by heating from the heater
Air convection hardly occurs in the annular space,
It has a configuration that is difficult to handle.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 2 is a front view showing an external configuration of an electric porridge pot according to one embodiment of the present invention, and FIG. 1 is a sectional line II of FIG.
FIG. 3 is a sectional view taken along line I of FIG.
It is sectional drawing seen from II-III. The body 40 of this electric porridge pot consists of an assembly of an outer case 1 and an inner case 2,
An inner case 2 is provided in an outer case 1 with a gap 2A therebetween . The rice cooker 3 is detachably accommodated in the inner case 2,
The rice cooker 3 is heated by a heater 4 provided at the bottom of the inner case 2. As is clear from FIG.
Is stored close to the inner case 2 and
A relatively narrow annular space 2B is defined between the casing 2 and the case 2.
Have been.

The outer case 1 is formed by fitting a side member 11 and a bottom member 12 made of synthetic resin, and has a substantially circular horizontal cross section. On the upper part of the side member 11, this electric oven
A handle 13 for carrying the saucepan protrudes.
The inner case 2 is formed in a substantially cylindrical shape using a metal material, and a heating plate 5 in which a heater 4 is embedded is fixed to the bottom of the inner case 2 with screws 41. The heater 4 has an annular shape surrounding the axis of the rice cooker 3, and has a predetermined maximum amount of heat and continuously heats the rice cooker 3.
In addition, 6 reinforces the outer case 1 and the side members 11
And a rib for guiding the bottom member 12 to smoothly fit the bottom member 12, and is erected upward from the upper edge of the opening of the bottom member 12. Reference numeral 42 denotes a reinforcing rib provided on the inner surface of the side member 11 to reinforce the outer case 1.

An edge of the inner case 2 is formed with an edge flange 43 which extends outward and is bent further downward. The rim 43 is supported by a support piece 45 formed at a predetermined position on the shoulder 44 of the outer case 1 at intervals in the circumferential direction. This support piece 45
Is formed so as to protrude inward from the shoulder portion 44, and has a groove portion 46 into which the end of the rim portion 43 of the inner case 2 is fitted. On the other hand, a washer 47 for mounting is provided on the bottom of the inner case 2, and the washer 47 is fixed to the seat of the inner case 2 by the screw 41 described above. A screw 50 is screwed into the washer 47 from below the bottom member 12 via a bush 49. By tightening the screw 50, the inner case 2 can be fixed to the outer case 1 and the side members of the outer case 1 can be fixed. 11 and the bottom member 12 can be fixed. The bottom member 12 is formed with a protective cylinder 51 surrounding the screw 50, which can prevent the wiring from being entangled with the screw 50 and the washer 47.

A mounting member 52 is mounted on a central lower surface of the washer 47 by a screw 48. The excessive temperature rise prevention element 31 is attached to the attachment member 52. The overheating prevention element 31 detects abnormal heating of the rice cooker 3 and
To stop the power supply to the 56 is a drain hole. When the rice cooker 3 is housed in the inner case 2, the bottom of the rice cooker 3 contacts the hot plate 5 with a large area. Thereby, the heat from the heater 4 is transmitted to the rice cooker 3 via the hot plate 5 in a favorable manner. Inside the rice cooker 3, a scale line indicating a standard of the amount of water according to the amount of the porridge to be cooked is formed by, for example, press molding.

The opening 3A of the rice cooker 3 is formed so as to extend in a direction away from the axis of the rice cooker 3, and has a flange 25 facing the outside of the container 40. The diameter of the shoulder portion 44 is smaller than the outer diameter of the shoulder portion 44. Further, a step 7 is formed below the flange 25. An inner lid 8, which is a lid made of a heat-resistant material, can be placed on the step 7. In the inner lid 8, a plurality of steam holes 9 communicating with the inner space and the outer space of the rice cooker 3 between the inner lid 8 and the opening edge 3A of the rice cooker 3 are provided at intervals in the circumferential direction (in the present embodiment, a plurality of steam holes 9). 3) are formed, thereby preventing spillage during cooking. The collar 25 prevents the spill from entering into the body 40, forms an upwardly directed annular step 25A, and covers the annular step 25A with a lid (the outer lid 54 or the inner lid 8). And the lid and the annular step 25
A gap 3B is formed between the rising wall 25B of A and
The steam in the rice cooker 3 can be released from the gap between the lid and the rising wall 25B, and even if a spill is generated between the collar 25 of the rice cooker 3 and the lid, the rising wall causes the spill to flow out. Is to be prevented. Reference numeral 53 denotes a knob for the inner lid 8.

The outer lid 54 can be placed on the inner lid 8. The porridge is cooked with the outer lid 54 removed, thereby preventing spillage. On the other hand, after cooking is completed, dust is prevented from entering through the steam holes 9 by covering the outer lid 54, and
The heat retention inside is also improved. This outer lid 54 can also be used as tableware when eating porridge. When cooking other than rice porridge is performed, the heating efficiency may be increased by using only the outer lid 54 without using the inner lid 8. In addition, 55 is a knob of the outer lid 54.

In a storage space formed between the outer case 1 and the inner case 2, a timer 15 for setting an energizing time to the heater 4 is arranged. The rotating shaft 16 for setting the energizing time in the timer 15 is guided through the hole 17 formed in the bottom case 12 to the external space of the outer case 1. The rotary shaft 16 is provided with a knob 18 that facilitates the rotation operation and has a function of displaying the rotation position.

At a position around the knob 18 in the bottom case 12, a scale plate 20 provided with a scale for displaying a set time corresponding to the angular position of the knob 18 is provided. The scale indicated by the display line 19 of the knob 18 is the set time of the timer 15, and the power supply to the heater 4 is continuously performed over the set time. The end of energization of the heater 4 is notified by turning off the indicator lamp 21 which is an end notification unit provided near the knob 18. That is, the indicator light 21
The lamp is turned on while the heater 4 is energized, and the display line 1 of the knob 18 is turned on.
The light is turned off when 9 designates the “OFF” position.

On the scale plate 20, as indicated by reference numerals A1 to A3, the rice cooked amount is set at a scale position of a standard set time corresponding to each of the rice cooked amounts of 0.25, 0.5 and 0.75. (The unit is “go”). Therefore, the user puts rice and water into the rice cooker 3 according to the scale indicating the amount of water inside the rice cooker 3, and in this state, preferably after waiting for an appropriate water absorption time, pulls the knob 18 into the rice cooker 3. The rice porridge can be easily cooked only by angularly displacing the display line 19 to a state where the display line 19 matches the display position of the amount of cooked rice in the tray.
The operation of angularly displacing the knob 18 until the display line 19 coincides with the display position of the amount of rice cooked in the rice cooker 3 is, in the end, an operation of setting a predetermined rice cooking time in the timer 15. In addition, all the numbers indicating the amount of cooked rice displayed on the scale plate 20 correspond to all.

FIG. 4 is an electric circuit diagram showing an electric configuration of the electric rice porridge . Electric power from the commercial AC power supply 30 is supplied to the heater 4 via an excessive temperature rise prevention element 31 that detects abnormal heating of the rice cooker 3 and stops power supply. The heater 4 includes a protection resistor 21a and an indicator light 21 in parallel.
Are connected in series. Further, the timer 15 and the indicator light 21 are interposed in the power supply line 32. During a period before the set time of the timer 15 becomes “0”, the timer 15 continuously supplies power from the commercial AC power supply 30 to the indicator lamp 21 and the heater 4. As a result, the heater 4 has a predetermined maximum amount of heat and continuously heats the rice cooker 3, and the indicator lamp 21 is turned on. When the set time of the timer 15 becomes “0”, the timer 15 stops supplying power to the indicator lamp 21 and the heater 4, so that the indicator lamp 21 is turned off.

The electric rice porridge pot in this embodiment is assumed to be cooked with whole rice cooked in each of the rice cooking amounts of, for example, 0.25 go, 0.5 go, and 0.75 go. As the amount of cooked rice increases, the time required for the contents of the rice cooker to reach a boiling state becomes longer. On the other hand, experience has shown that delicious porridge can be cooked by keeping the duration of the boiling state after reaching the boiling state substantially constant regardless of the amount of cooked rice. For this reason,
The time until the content of the rice cooker reaches the boiling state (hereinafter referred to as “boiling rise time”) substantially affects the quality of the porridge. In consideration of this point, in the present embodiment, the power consumption of the heater 4 (corresponding to the predetermined maximum amount of heat) is reduced to the ideal boiling rise time for any of the assumed rice cooking amounts. The boiling rise time is chosen to be as close as possible.

For example, the power consumption of the heater 4 is set to 230 W
FIG. 5 shows the temperature change of the rice cooker 4 when the whole dish is cooked. In FIG. 5, a curve L1 corresponds to a case where the amount of cooked rice is 0.25, a curve L2 corresponds to a case where the amount of cooked rice is 0.5, and a curve L3 corresponds to a case where the amount of cooked rice is 0.75. Boiling rise time T for each amount of cooked rice
1, T2 and T3 become longer as the amount of cooked rice increases. For example, if the boiling rise time T2 when the amount of cooked rice is 0.5 is almost equal to the ideal boiling rise time, the amount of cooked rice is approximately 0.25. In the case of a combination and a 0.75 combination, the whole rice can be cooked well.

Table 1 below shows the relationship among the amount of cooked rice, the rise time of boiling, and the time of cooked rice. The rice cooking time is the total time required for rice cooking, including the boiling rise time and the time that the boiling state is maintained after the boiling state is reached. Table 1 also shows the boiling start time and the rice cooking time when cooking for 5 minutes is performed with the rice cooking amount set to 0.25. The rice cooking conditions for each rice cooked amount of whole goyu and the rice cooking conditions for 5 minutes of 0.25 go are as follows.

Whole sushi (0.25 go) ... rice: 39 g, water: 350 g sushi (0.5 go) ... rice: 77 g, water: 500 g whole sushi (0.75 go) Go) Rice: 116 g, water: 750 g 5 mins soup (0.25 go) ... Rice: 39 g, water: 500 g

[0024]

[Table 1]

The value of each rice cooked amount is formed on the scale plate 20 indicating the set time of the timer 15 based on the rice cooked time shown in Table 1 (reference numerals A1 to A3). As described above, according to the electric rice porridge of the present embodiment, by operating the knob 18 and setting the energizing time to the timer 15 based on the display of the amount of cooked rice, the appropriate energizing time of the heater 4 can be adjusted to the amount of cooked rice. It can be set appropriately depending on the situation, and thereby delicious porridge can be easily cooked. In addition, since the steam holes 9 are formed in the inner lid 8, there is no danger of spilling over, and there is no fear that the outer case 1 will be soiled. Furthermore, since the opening edge 3A of the rice cooker 3 is formed facing the outside of the container 40, even if a spill occurs, the inside of the container 40 can be prevented from being soiled.

Further, the power consumption of the heater 4 for continuously heating the rice cooker 3 is set so that the boiling rise time becomes almost an optimum value corresponding to each rice cooking amount assumed corresponding to the capacity of the rice cooker 3. Since it is set, good heating control can be realized by continuous energization of the heater 4, and delicious rice porridge can be cooked. In addition, when cooking rice porridge, a large amount of water is present in the rice cooker 3, so that the temperature in the rice cooker 3 is maintained at a constant value (about 100 ° C.) after reaching a boiling state,
Also, since there is no fear of scorching, good temperature control can be realized by continuous energization of the heater 4 without requiring a sensor for detecting the temperature of the rice cooker 3. As described above, the conventional rice cooker does not have a sensor for temperature detection, which is required, and does not have a configuration for complicated heating control or a heat retention heater. The configuration has been simplified.

The above-mentioned electric rice porridge can be suitably used not only for cooking rice porridge but also for cooking instant noodles, for example. Further, the present invention is not limited to the above embodiment. For example, in the above embodiment, the end of cooking is notified by the indicator light 21, but the end of cooking may be notified by lighting of the indicator light, or a buzzer or the like may be applied instead of the indicator light. .

Further, although the mechanical timer 15 is applied in the above embodiment, an electric timer using a counter circuit or the like may be applied. In this case, for example,
The outer case 1 may be provided with a key input unit and a display unit composed of a liquid crystal element or the like, so as to support the input of the power-on time. Further, the power supply time corresponding to the predetermined rice cooking amount may be stored in the memory, and the power supply time may be appropriately displayed on the display unit by operating the key input unit. Furthermore, it is also possible to adopt a configuration in which the amount of cooked rice is input from the key input unit, the energization time corresponding to the input amount of cooked rice is read out from the memory, and the energization time is set in the electric timer. .

In the above embodiment, three steam holes 9 are formed in the inner lid 8, but the size and number of the steam holes can be arbitrarily determined as needed. In addition, various design changes can be made without changing the gist of the present invention.

[0030]

As described above , according to the present invention , the opening edge of the rice cooker faces the outside of the container, and the opening edge extends in the direction away from the axis of the rice cooker, and Since the flange portion facing the outside is formed, it is possible to effectively prevent spillage into the body. In addition, the brim of the rice cooker is formed with a smaller diameter than the outer diameter of the shoulder of the body, so it is difficult to directly touch the brim when moving the electric porridge to the dining table, etc., and the body shoulder is a safety guard. It becomes a highly secure one.

In addition, an upwardly-facing annular step is formed on the flange, and a lid is placed on the annular step, and a gap is formed between the lid and the rising wall of the annular step. The steam in the rice cooker can escape from the gap between the body and the rising wall, and even if a spill occurs from between the brim portion of the rice cooker and the lid, the rising wall can prevent the outflow of the spill. .

In particular, the inside of the rice cooker is separated by a gap in the outer case.
An inner case made of a metal material that forms the container is provided.
In the unlikely event of a spill from the rising wall
If there is any
Inside the container (formed by outer case and inner case)
Into the gap), and the electrical components inside the housing
Goods can be protected.

[0033] Furthermore, it is divided by a rice cooker and an inner case.
The heat blocked by the annular space is
Is also blocked by the gap defined by
This improves the heat insulation performance of the rice cooker and
The heat conduction by forming the metal
The thermal efficiency from the heater improves while the outer case is made of synthetic resin.
Demonstrate higher heat insulation performance in combination with being formed
And can be highly secure.

Also, no convection occurs in the annular space.
This makes it difficult for heat to escape,
Synergistically high heat insulation and heat retention
There is an advantage that can be. Thus, according to the present invention,
High heating efficiency and safety can be obtained with a simple structure
It has a remarkable effect that it can be done.

In addition, an upwardly-facing annular step is formed on the flange, and a lid is placed on the annular step, and a gap is formed between the lid and a rising wall of the annular step. The steam in the rice cooker can escape from the gap between the body and the rising wall, and even if a spill occurs from between the brim portion of the rice cooker and the lid, the rising wall can prevent the outflow of the spill. .

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a configuration of an electric porridge pot of one embodiment of the present invention.

FIG. 2 is a front view of the electric rice porridge .

FIG. 3 is a cross-sectional view taken along line III-III in FIG.

FIG. 4 is an electric circuit diagram showing an electric configuration of the electric porridge .

FIG. 5 is a diagram showing a time change of the temperature of the rice cooker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer case 2 Inner case 3 Rice cooker 3A Opening edge 4 Heater 8 Inner lid (lid) 9 Steam hole 15 Timer 18 Knob 20 Scale plate 21 Indicator light (End notification means) 40 Body

Claims (1)

(57) [Claims] An electric oven having a rice cooker housed in a container.
In the saucepan, the vessel forms an exterior body made of synthetic resin
The outer case and the inner container of the rice cooker with a gap in the outer case
An inner case made of a metal material to be formed is formed , and at the opening edge of the rice cooker, a brim portion extending in a direction away from the axis of the rice cooker and facing the outside of the body is formed. The body is formed to have a diameter smaller than the outer diameter of the shoulder, and an upwardly directed annular step is formed. A lid is placed on the annular step, and a gap is provided between the lid and the rising wall of the annular step. Together with
By storing the rice cooker close to the inner case,
Electrodeposition, characterized by forming an annular space between the scan
Kimono porridge .