JP3574582B2 - rice cooker - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a commercial rice cooker that cooks a large amount of rice in three boxes, four boxes, and five boxes in one unit.
[0002]
[Prior art]
In this type of conventional rice cooker, an inner pot is taken out of the main body through an opening in the front of the rice cooker so that the inner pot can be freely taken in and out, and the inner pot is heated by a heating heat source provided at a lower portion of the outside to cook rice. I was
[0003]
Conventionally, as the heating heat source, there are those using an electromagnetic induction heating coil and those using an electric heater such as a sheathed heater, but unlike the former in which the inner pot itself generates heat, those using the latter electric heater are not In particular, measures must be taken to effectively heat the inner pot without the heat from the heater escaping to the surroundings.
[0004]
Conventionally, as a countermeasure, the periphery of the inner pot is surrounded by a reflex plate so as to prevent heat from the electric heater from escaping to the surroundings, but a reflex plate is provided on the lower side of the electric heater because the heat generation capacity is large. In this case, it may be difficult to provide this reflex plate because of the possibility of heat deformation, etc., and it is difficult to improve the rice cooking performance by simply increasing the electric power at the time of cooking rice or examining a rice cooking sequence that changes the heating and cooling according to time and temperature. Had gone.
[0005]
[Problems to be solved by the invention]
In the above-mentioned conventional structure, the reflex plate has a configuration only around the inner pot, and there has been a problem such as a decrease in thermal efficiency.
[0006]
Also, if the power of the heater is increased to ensure the rice cooks, only the bottom of the inner pot is heated strongly locally, so that it is not possible to apply heat to the whole from the bottom to the side of the inner pot as in the case of cooking a kettle. There was a problem that uneven cooking was caused and it was not possible to provide good cooked rice.
[0007]
[Means for Solving the Problems]
In order to solve such a conventional drawback, the present invention provides a heating heat source for heating an inner pot and a substantially horizontal mounting base for mounting the heating heat source with a spacer interposed therebetween. A substantially horizontal reflex plate is attached by using a supporting bracket such as the above, without dropping off from the spacer and maintaining a gap that can move freely.
[0008]
This makes it possible to attach a reflex plate to the lower part of the heat source for heating, and prevents the heat of the heat source for heating from being transmitted to the mounting base by the reflex plate, effectively transmitting heat to the inner pot and the entire bottom of the inner pot. Heat. As a result, when cooking rice in large quantities such as 3 sho, 4 sho, and 5 sho, or when cooking rice with rice cooked, apply heat to the entire inner pot from the bottom to the side of the inner pot like cooking a pot. Thus, convection in which steam is boiled along the side surface of the inner pot, which is ideal for cooking rice, is promoted, and it is possible to provide cooked rice with less power and less uneven cooking.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
In claim 1 of the present invention, the rice cooker main body, an inner pot which is housed in the main body so as to be able to be taken in and out, a lid which covers an upper opening of the inner pot, and a door which is opened when the inner pot is taken out from the main body. A heating heat source provided at a lower portion of the outer pot of the inner pot to heat the inner pot, a fixing bracket for fixing the heating heat source, and a lower portion in the main body for attaching these heating heat source portions. In a rice cooker comprising a substantially horizontal mounting base and a temperature sensor for detecting the bottom temperature of the inner pot during rice cooking, a spacer is interposed between the heat source for heating and the mounting base, and a screw is attached to the spacer. A substantially horizontal reflex plate is not attached to the spacer by a supporting bracket made of the same or the like, and is attached while maintaining a gap enough to allow free movement.
[0010]
According to a second aspect of the present invention, a radial or circular slit-shaped hole is provided on the surface of the reflex plate.
[0011]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is a perspective view showing the appearance of a rice cooker to which one embodiment of the present invention has been applied, FIG. 2 is a front sectional view of a main part of the rice cooker, and FIG. 4 shows a perspective view of the reflex plate.
[0013]
In the figure, reference numeral 1 denotes a box-shaped rice cooker main body made of a stainless steel plate. Reference numeral 2 denotes an inner pot in which cooking materials such as rice and water are put into the cooking pot for heating and cooking rice, etc., which can cook a large amount of rice in 3 sho, 4 sho, 5 sho, and the like from the front opening of the main body 1. It is housed in the main body 1 so as to be freely taken in and out. Reference numeral 3 denotes a lid that covers the upper opening of the inner pot 2, and 4 denotes a vertically opened door that closes the front opening of the main body 1.
[0014]
Reference numeral 5 denotes a heating heat source comprising an electric heater, which is provided at a lower portion on the outer side of the inner pot 2 and is constituted by a spiral sheathed heater larger than the bottom diameter of the inner pot 2.
[0015]
Reference numeral 6 denotes a fixture for mounting and fixing the heating heat source 5, and constitutes a heating heat source portion 5a integrally with the heating source 5.
[0016]
Reference numeral 7 denotes a mounting base, which is installed in a substantially horizontal state at a lower portion in the main body 1 by bending an outer peripheral edge portion of the mounting base downward at a right angle and fixing it to the inner peripheral surface of the main body 1.
[0017]
Reference numeral 8 denotes a temperature sensor for detecting the temperature of the bottom of the inner pot 2 during rice cooking. The temperature sensor 8 penetrates the center of the mounting table and the heat source 5a and is in elastic contact with the bottom center of the inner pot 2.
[0018]
Reference numeral 9 denotes a reflex plate according to the present invention, which is interposed substantially horizontally between the heating heat source 5a and the mounting base 7, and surrounds the heating heat source 5a by raising its outer peripheral edge upward. . As shown in FIG. 4, the reflex plate 9 is provided with a plurality of radial or circular slit-shaped holes 7a and a plurality of fixture through holes 7b. The reflector plate 9 fixes the spacer 10 on the mount 7 facing the fixture through-hole 7b, and the screw head of the spacer 10 from above the fixture through-hole 7b is larger than the diameter of the fixture through-hole 7b. The reflex plate 9 is loosely attached with a clearance so that the reflex plate 9 can move freely by a support fitting 11 having a small screw portion diameter.
[0019]
Reference numeral 12 denotes an operation unit provided on the front of the rice cooker main body 1 and next to the door 4.
[0020]
The present invention is configured as described above. When the door 4 is opened, the inner pot 2 containing the object to be heated (rice and water) is set in the rice cooker main body 1, and the operation unit 12 is operated to cook rice. Electric power is supplied to the overheating heat source 5 to heat the inner pot 2. When the object to be heated in the inner pot 2 is heated, it is brought into a boiling state and steam starts to boil.
[0021]
In the past, this steam boiled out from the gap between rice or mainly from the gap between the rice and the inner pot side. As the load increases, steam boils out along the inner side of the inner kettle 2 and the ideal convection in the rice cooked to the top of the rice becomes difficult to occur, and the water heated at the bottom of the kettle does not escape to the top. The rice is hard and the pot bottom is soft and the cooking is uneven.
[0022]
On the other hand, the present invention prevents the heat from the heating heat source 5 from being transmitted to the mounting table 7 by the reflex plate 9 at the time of cooking rice, prevents heat radiation, and efficiently heats the entire bottom of the inner pot 2 with little power. To heat the whole of the inner pot 2 from the bottom to the side of the inner pot as in the case of cooking with a furnace, so that convection in which steam boils along the inner side face of the inner pot 2 which is ideal for cooking rice during cooking It is possible to stably cook cooked rice with less uneven cooking without water stagnating at the bottom of the pot.
[0023]
In addition, during this rice cooking, the reflex plate 9 is heated by the heating heat source 5 having a large heat generating capacity. However, the reflex plate 9 is loosely fastened to the mounting base 7 by the support bracket 11 so that it can move freely, and this has an effect on a decrease in thermal efficiency. By providing the slit-shaped hole 7a having a size that is not so large, that is, a size that does not allow heat to escape under the mounting base 7, distortion due to thermal expansion is reduced, and a sufficient role as a reflector is achieved. be able to.
[0024]
【The invention's effect】
As described above, the present invention allows a heating heat source for heating an inner pot and a mounting plate for mounting the heating heat source to be able to move freely without falling off a reflex plate. Since it is attached, it is possible to attach a reflex plate under the heating heat source, and the heat of the heating heat source is prevented from being transmitted to the mounting base by the reflex plate, effectively transmitting heat to the inner pot, It heats the whole bottom. This makes it possible to apply heat to the entire inner pot from the bottom to the side of the inner pot as in the case of cooking rice in large quantities such as 3 sho, 4 sho, and 5 sho, or when cooking rice for cooking. In this way, convection in which steam is boiled along the inner pot side, which is ideal for cooking rice, is promoted, and it is possible to provide rice that is cooked with less electric power and has less uneven cooking.
[0025]
Further, by providing a slit-shaped hole having a radial or circular shape on the surface of the reflex plate, distortion due to thermal expansion can be further reduced, and the reflector can sufficiently fulfill its role as a reflector.
[Brief description of the drawings]
FIG. 1 is a perspective view showing the appearance of a rice cooker according to one embodiment of the present invention.
FIG. 2 is a front sectional view of a main part of the rice cooker.
FIG. 3 is a side sectional view of a main part of the rice cooker.
FIG. 4 is a perspective view of a reflection plate (9).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rice cooker main body 2 Inner pot 4 Door 5 Heating source for heating 5a Heating source for heating 6 Fixture 7 Mounting stand 8 Temperature sensor 9 Reflex plate 10 Spacer 11 Supporting fixture

Claims (2)

Rice cooker body (1), inner pot (2) housed in and out of main body (1), lid (3) covering the upper opening of inner pot (2), and main body (1) A door (4) that opens when the inner pot (2) is taken out of the inner pot, a heating heat source (5) provided at the outer bottom of the inner pot (2) to heat the inner pot (2), and a heating heat source ( 5) A fixing bracket (6) for fixing the heat source, a substantially horizontal mounting table (7) provided at a lower portion in the main body (1) for mounting these heating heat source portions (5a), and when cooking rice. In a rice cooker comprising a temperature sensor (8) for detecting a bottom temperature of an inner pot (2), a spacer (10) is interposed between the heating heat source (5a) and a mounting table (7), The substantially horizontal reflector plate (9) is not dropped from the spacer (10) by the support bracket (11) on the spacer (10). And rice cookers, characterized in that mounted to hold the gap to the extent that it is free to move. The rice cooker according to claim 1, wherein a slit-shaped hole (7a) having a radial or circular shape is provided on the surface of the reflex plate (9).

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