JP2935077B2 - 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 a rice cooker used daily in a general household.

[0002]

2. Description of the Related Art As a conventional rice cooker, (1) an aluminum cast heater in which a sheathed heater is cast in aluminum is brought into contact with the bottom of an inner pot of the rice cooker to transfer conductive heat to water and rice. And cook rice. (2) A method of cooking rice by sending hot air. (3) There is a method in which a sheathed heater is wound in a ring shape to cook rice by radiant heat.

[0003]

SUMMARY OF THE INVENTION
In the method using the cast aluminum heater of (1), since heat is transferred by conduction heat from the bottom of the inner pot, optimal heat transfer to rice and water inside the inner pot is not performed, especially water inside the inner pot There was a problem that the convective stirring of the rice during boiling was uneven, and the rice could not be cooked on average and partially bad rice was produced.

[0004] The method of sending hot air in the above (2) is as follows.
Unless the heat shutoff is performed reliably, there is a problem that the temperature rise of the rice cooker body becomes large.

[0005] It is an object of the present invention to provide a rice cooker which solves the above problems.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a heat plate integrated with a protective frame is provided so that heat is transmitted to the inner pan uniformly by conductive heat on the bottom and radiant heat on the sides. A planar heater is pressed into contact with the bottom of the inner plate, and the inner pan is wrapped around the entire hot plate. And scan the material of the heating plate Terrence - copper - the Kuraddometa Le stainless
It was used .

[0007]

According to the present invention, the conduction of heat to the inner pan is conducted by supplying conduction heat to the bottom and radiant heat to the sides to be heated on average, so that the rice inside is convectively stirred and cooked unevenly. without becomes cooking, further improves the temperature distribution of the contact portion between the inner pot by selection of the material of the heating plate, and can increase the input power to facilitate the transfer of heat.

[0008]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below.

First, a first embodiment will be described.
In FIG. 1, reference numeral 1 denotes an appliance main body, and a heat insulating plate 4 is interposed between a heat plate 2 also serving as a protective frame and an outer wall 3. 5
Is a rice cooker in which a planar heater 6 is pressed against the bottom of the hot plate 2 also serving as a protective frame by a heater presser 7, and 8 is a bottomed cylindrical inner pot made of a metal having good heat conductivity. The space between the heating plate 5 and the rice cooking heater 5 is housed in the appliance main body 1 in a state of contact with the hot plate 2 at the bottom, and the heating plate 2 can be heated so as to be wrapped. Reference numeral 9 denotes a heat-insulating lid that covers the upper opening of the appliance body 1, and 10 denotes a metal inner lid that covers the upper opening of the inner pot 8, which is detachably connected to the heat-insulating lid 9. Reference numeral 11 denotes a control device for controlling the rice cooking heater 5, which is provided on the inner surface of the heat insulating lid 9.

In the rice cooker of the present invention configured as described above, heat is transmitted to the inner pot 8 at the bottom by conduction heat.
Since the side portion is formed by the radiant heat of the hot plate 2, the rice is uniformly convectively stirred, and rice cooked with very little uneven cooking can be obtained. Further, since the area of the hot plate 2 is large, the electric power capacity of the rice cooker can be increased. According to the present invention, the electric power capacity can be increased from 850 W to 1200 W according to the present invention.

FIG. 2 is a sectional view of the rice cooking heater 5 of the present embodiment .

[0012] Thermal plate 2 is formed into a bottomed cylindrical shape, the scan in the present invention stainless - copper - stainless clad metal
Consists of wood charge, since the thermal conductivity is good, it can be heating the inner bowl 8 uniformly throughout the hot plate 2.

Further, by providing a step 13 at the outer peripheral portion of the portion where the planar heater is pressed by the heater presser 7, the contact with the inner pan 8 is ensured, and Even if foreign matter such as rice grains is placed on the portion of the plate 2 above the planar heater 6, the foreign matter can be easily dropped into the groove 14. Further, even if a small amount of water is applied to the rice cooking heater 5, it does not reach the planar heater 6, which is very safe electrically.

[0014]

As described above, the rice cooker according to the present invention is a rice cooker in which a planar heater is pressed against the bottom of a hot plate integrated with a protective frame, and the hot plate is in contact with the bottom. A rice cooker provided with an inner pan, which is configured to wrap the inner pan with the entire hot plate.

[0015] Therefore, heat is supplied from the entire outer periphery to the inner pot by conduction heat at the bottom portion and by radiant heat of the hot plate at the side portions, so that the stirring of rice becomes uniform, and the unevenness of rice cooker becomes very uneven. You can get less cooked rice.

[0016] The heat plate, scan Terence - copper - consists clad metal stainless, which is configured by a material having good thermal conductivity, improved temperature distribution of the portion contacting the inner bowl is made uniform In addition, since the heat transfer to the side portion is facilitated, the input power amount can be increased.

[0017]

[Brief description of the drawings]

FIG. 1 is a sectional view of a rice cooker showing one embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a rice cooking heater used in the rice cooker of the present invention.

[Explanation of symbols]

2: hot plate, 5: rice cooker, 6: sheet heater,
8 ... inner pot, 13 ... step.

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-59-197220 (JP, A) JP-A-56-13919 (JP, A) JP-A-63-267309 (JP, A) JP-A-63-197309 267310 (JP, A) JP-A-63-267311 (JP, A) JP-A-63-267312 (JP, A) Fully open 48-93968 (JP, U) Really open 1951-12563 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) A47J 27/00-27/64

Claims (1)

(57) [Claims] 1. A rice cooker having a cylindrical shape having a bottom formed integrally with a protective frame and made of stainless steel-copper-sterene.
The bottom rear surface of the heating plate comprising a scan of the cladding metal, and cooking heater of the planar heater is pressed against the bottom portion upper surface of the hot plate, that the bottom is provided with an inner pot that is provided so as to contact Characterized rice cooker.