JPH0751106B2 - Cooking device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cooker used for cooking and boiling.

2. Description of the Related Art In recent years, cookers have mainly become easy to use and maintenance-free, and there is a demand for products that do not actually cause harm even if they are misused.

Conventionally, in this type of cooker, for example, a rice cooker, the structure shown in FIGS. 3 and 4 has been generally used. The configuration will be described below with reference to the drawings.

As shown in the figure, the pot 100 for cooking rice and water is a heating source (not shown) for heating the pot 100 and a pot sensor (not shown) for detecting the temperature of the pot 100. It is heated and controlled, and its opening is covered with the inner lid 103 in a mounted state. The inner lid 103 is detachably attached to the heat radiating plate 106 by a rubber holder 104 and a holding shaft 105 fixedly attached to the heat radiating plate 106 that removably holds the rubber holder 104. And
The inner lid 103 is provided with a steam hole 118 having a large hole diameter near the center and a reflux hole 119 having a small hole diameter near the periphery, and both holes 118 and 119 are provided.
An inner lid ring 120 is erected between the two.

The heat radiating plate 106 is attached to the outer lid cover 112 at its peripheral portion via the pan packing 108, and the heat retention heater 110 formed in a U shape is provided on the upper surface. The outer lid cover 112 is attached to the outer lid 111 at its peripheral portion.

A steam hole 107 for discharging steam is provided between the outer lid 111 and the heat dissipation plate 106.
An annular steam plate 113 that forms the above is attached via a steam packing 114.

The pan 100 is stored in a suspended state in an upper frame 116 attached to the upper edge of the cooker body 117, and is sealed with a pan packing 108.
Further, the outer lid 111 can be opened and closed by a rotating shaft 115 provided on the upper frame 116.

In the above configuration, when the cooking device is operated, the temperature of the pan 100 rises due to the heating source, and rice and water, which are cooking products, boil. If starch from rice, etc. dissolves in the water and becomes sticky, it becomes easier to foam.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In such a conventional cooker, when the pot 100 is heated by the heating source and the rice and water are boiled, the solute components such as starch of the rice are melted out and the water is easily foamed. . The volume of the foamed bed is filled up between the pot 100 and the inner lid 103, and is ejected from the steam hole 118 of the lid having a large hole diameter. In addition, if the rice is freshly polished, or if more than the appropriate amount of rice or water is added, or if the sharpened rice is insufficient, then the volume of the foamy stick will increase further and the inner lid long 120 To reach the steam hole 107, and finally the outer lid
There was a problem that it squirted out on the 111 side, spilled over and fell down to the floor. Conventionally, in order to solve this spillage, basically, there is only a means to make the volume surrounded by the pan 100, the maximum cooking product water surface and the heat dissipation plate 106 as large as possible, and there is a problem that the product becomes large.

Further, as another problem, when cooking is completed and the lid is opened, a large amount of dew attached to the inner lid 103, the heat radiating plate 106 and the like flows down onto the upper frame 116, and the dew provided on the upper frame 116. A large amount falls down to a dew receptacle (not shown) below the hole (not shown). There is a problem that if the water accumulated in the exposure is forgotten and it is used continuously, the water eventually overflows from the exposure and pollutes the floor. In addition, in order to prevent flooding from the dewdrop, it is necessary to remove the dewdrop after each use, discard the water in it, wash it, and then attach the dewdrop again. There was a problem.

Further, since the heater terminal portions are arranged on both sides of the steam hole, both the heater terminal portions should be attached to the radiator plate with the power supply lead wires attached to the heater terminal portions. There is a problem in that the assembling is not good because it must be fixed separately.

The present invention solves the above problems, and an object of the present invention is to provide a cooker which does not cause spillage and can be miniaturized, does not require exposure to dew, and is easy to assemble.

Means for Solving the Problems In order to achieve the above object, the present invention provides a cooker main body having a heating source, a pan detachably housed in the cooker main body, and an outer cover that covers the cooker main body in an openable and closable manner. A lid, an inner lid and a radiator plate that are attached to the inside of the outer lid and cover the opening of the pot and have steam holes for discharging steam in the cooker body, and a heater that is attached to the radiator plate and heats the radiator plate. The heater is arranged in a U-shape on the surface of the heat dissipation plate, and the U-shaped portion of the heater is arranged around the steam hole,
Further, both terminal portions of the heater are arranged in parallel and adjacently as needed.

Action The present invention has the above-described configuration to heat the heat dissipation plate to 100 ° C. or higher, and particularly to increase the heating density of the heat dissipation plate surface near the center of the heat dissipation plate of the steam hole. The bubbles can be eliminated, the volume can be reduced, and the bubbles of the bean can be prevented from gathering so that the spillage can be eliminated, and the cooker can be downsized by the above action.

Further, since the heating density is high in the vicinity of the steam holes, which is most likely to be cooled by communicating with the outside air and where dew condensation is likely to occur, it is possible to prevent dew from occurring in the steam holes.

Further, since both terminal portions of the lid heater are provided in parallel to each other in the same direction and the U-shaped portion of the heater is arranged around the steam hole, the U-shaped portion of the heater and both terminal portions are positioned and the remaining heater is By forming the foam, the assemblability becomes good, and the automation becomes possible, and the cost can be reduced.

Example Hereinafter, a rice cooker which is an example of the present invention will be described with reference to FIGS.
Description will be given with reference to FIG. The same components as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted.

Reference numeral 1 is an inner lid, and an annular groove 2 is formed in the peripheral portion thereof. A steam hole 3 is formed in the shoulder of the inner edge of the groove, and a reflux hole 4 is formed in the bottom surface.
Has been drilled. Reference numeral 5 is a heat sink, and a groove 2 is formed on the peripheral edge thereof.
A steam hole 6 is formed so that the steam is discharged to the outside of the outer lid 111 via the packing 114 and the steam plate 113.

Reference numeral 7 is a heater made of a code heater or the like arranged on the upper surface of the heat dissipation plate 5, and as shown in FIG. 2, the terminal portions 8 are arranged in parallel, and the heater 7 forms a substantially circular shape in a substantially parallel manner. And the U-shaped portion 10 is formed. The U-shaped portion 10 is arranged so as to heat the surface of the heat dissipation plate of the steam hole 6 near the center of the heat dissipation plate. Reference numeral 11 denotes a sensor, which is set to keep the temperature of the heat sink 5 at 100 ° C. or higher.

Due to this arrangement of the heaters 7, the heat radiation plate 5 has a higher heating density around the steam holes 6 than other portions, and for example, the portions where the heaters 7 are arranged in parallel are controlled at 110 ° C. At this time, the temperature around the steam hole 6 where the U-shaped portion 10 is arranged is 110 ° C. or higher.

To explain the operation in the above configuration, a switch (not shown) is turned on to heat the pan 100 by the heating source. When water containing rice boils, solutes such as starch in the rice will melt out, and the water will be in a state where it easily foams. Furthermore, the bean curd that has been heated to a foam state increases in volume and becomes full between the pot 100, the water surface of the cooking product, and the inner lid 1, and spouts from the steam hole 3 of the inner lid 1. Such bubbles are defoamed by coming into contact with the heat dissipation plate 5 heated to 100 ° C. or higher. However, immediately after milling the fresh rice or when the sharpness of the rice is insufficient, the viscosity of the water becomes too sticky and bubbles tend to form easily, and the volume of the bed becomes very large. In addition, if the appropriate amount of water or rice is added, the water level will rise, and if the heating power of the heating source is high, such as high power to improve the taste, the amount of steam generated will increase and it should be almost proportional to that. The bubbles are very easy to form and the volume increases. Under such conditions, the bubble-like squirt jets out from the steam holes 3 of the inner lid 1 in a larger amount and tries to flow out to the steam holes 6 communicating with the outside air. In such a case, in the configuration of the present invention, since the heat radiating plate surface of the steam hole 6 near the heat radiating plate center has a higher heating density than the other heat radiating plate surfaces, the defoaming action in that part is strong, The bubbles that try to overflow from the vapor holes 6 to the outside of the outer lid 111 are defoamed to become liquids, and the volume of the bubbles is greatly reduced.

Here, when observing the foamy bean well, the foamy bean shows an action of gathering in a portion having a low heating density, that is, a portion having a low relative temperature. Of high temperature, that is, a portion of high relative temperature, is less likely to collect, and therefore, the stick from the steam holes 6 does not spill over. In the experiment, even if about 10% of the water was added to the conventional water spill limit, the same spill resistance was obtained.

Next, by arranging the U-shaped portion 10 of the heater 7 around the steam hole 6 that is in communication with the outside air and is most easily cooled,
The constituent members of the steam hole 6 are also heated, and the steam of the cooked food goes out around the steam hole 6 without being able to condense, and since the dew does not adhere, the dew reception can be abolished and the dew can be done every time. It aims to be maintenance-free by eliminating the operation and greatly improving usability.

Further, since both terminal portions 8 of the heater 7 are provided in the vicinity of the steam hole 6 in parallel in the same direction and the U-shaped portion 10 of the heater 7 is arranged in the vicinity of the steam hole 6, the U-shaped portion of the heater 7 is formed. It is possible to assemble simply by positioning 10 and both terminal parts 8 and forming the heater 7. Form time is halved, and it is possible to automate the forming by positioning the 2 points.
The assembly cost can be further reduced.

EFFECTS OF THE INVENTION As is clear from the description of the above embodiments, according to the present invention, the heat sink is heated to 100 ° C. or higher by the heater, and the heater is arranged so as to heat the steam hole near the center of the heat sink. Since the U-shaped part of the heater is arranged around the steam holes, the bubbles in the bed of the heater that disappear around the steam holes are eliminated, the volume is reduced, and the bubbles are prevented from gathering, so that the bubbles spill over from the steam holes. The effect that does not occur is greatly enhanced, especially when it is new rice or when the rice is insufficiently broken, or when water or rice is erroneously measured or when the power is increased, it does not cause a spillage from the steam holes, and the cooked food and inner pot and pan Since the volume of the space surrounded by can be reduced, the size of the cooking device can be reduced.

In addition, since the dew of cooking vapor does not reach around the steam hole that is in communication with the outside air and is most easily cooled, it is possible to abolish the dew reception, eliminating the need to remove the dew reception every time and remove the dew. It will be a cooker that is easy to use.

In addition, the U-shaped part of the heater is provided near the steam hole, so the workability of mounting the heater on the heat sink is improved, the number of assembly steps can be halved, and the mounting can be automated, further reducing the assembly cost. Is what you can do.

[Brief description of drawings]

FIG. 1 is a partial sectional view of a cooking device showing an embodiment of the present invention,
FIG. 2 is a plan view of the heat sink, FIG. 3 is a partial sectional view showing a conventional cooker, and FIG. 4 is a plan view of the heat sink. 1 ... Inner lid, 5 ... Heat sink, 6 ... Steam hole, 7 ... Heater, 8 ... Terminal part, 10 ... U-shaped part, 100 ... Pan, 111 ... Outer lid, 117 ... Main body.

Claims (2)

[Claims] 1. A cooker main body having a heating source, a pan that is detachably housed in the cooker main body, an outer lid that opens and closes the cooker main body, and an opening of the pan that is mounted inside the outer lid. An inner lid and a heat radiating plate that respectively cover the portion and have steam holes for discharging the steam in the cooker main body, and a heater attached to the heat radiating plate to heat the heat radiating plate, wherein the heater has a U-shaped heat radiating plate surface. And a U-shaped portion of the heater disposed around the steam hole. 2. The cooker according to claim 1, wherein both terminals of the heater are arranged in parallel and adjacent to each other.