JPS6319111A - Rice cooker - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rice cooker for general household use.

2. Description of the Related Art A conventional rice cooker of this type was constructed as shown in FIG. That is, in this FIG. 2, 1 is a cylindrical rice cooker main body, this rice cooker main body 1 is equipped with a 2-bean outer pot 2, and this outer pot 2 is equipped with a heating element 3 for rice cooking.
and a circular heat shield plate A4. 5 is a heat insulating material that covers the outer periphery of the outer pot 2, and 6 is an inner pot that is detachably housed in the outer pot 2. A lower frame 7 made of resin is fitted into the cylindrical main body 1, and the lower frame 7 is provided with a control circuit board 8 and a circular heat shield plate B9.

Problems to be Solved by the Invention However, in such a conventional configuration, there are resin parts that are directly exposed to radiant heat from the rice heating element 3 during rice cooking, and there is a risk of exceeding the thermal deformation limit value. Since there is a space where the heating element 3 for rice cooking and the lower frame etc. are connected, the ambient temperature rises due to the influence of heat convection, causing thermal deformation of resin molded products such as the lower frame 7, and damage to the control circuit board. There was a risk of destroying the electronic components on the 8.

An object of the present invention is to provide a rice cooker that solves these problems.

Means to solve problems 3/.

In order to solve the above problems, the present invention makes the outer peripheral end of the heat shield plate A provided in the outer pot contact the side of the heat insulating material covering the outer periphery of the outer pot, and The end face of the heat shield plate B provided on the lower frame is pressed against the end of the heat insulating material to form a double heat shield structure.

Effect According to the above configuration, the heat shield A and the heat insulating material create a first closed space, and the heat shield B and the heat insulating material create a second closed space.
This creates a closed space, which greatly suppresses the rise in ambient temperature due to radiant heat and thermal convection, thereby protecting resin molded parts such as the bottom frame from thermal deformation, and protecting the control circuit board from heat deformation. Electronic components can also be protected. Furthermore, since the end face of the heat shield plate B is held down by the end of the heat insulating material, it will not rattle even if vibration occurs during movement.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIG. In the figure, 11 is a cylindrical rice cooker body;
An outer pot 12 is attached to the inside of the rice cooker 1 via an upper frame 13, and this outer pot 12 is provided with a heating element 14 for rice cooking at the inner bottom. Reference numeral 15 denotes an inner pot removably placed on the heating element 14 for cooking rice, and is made of a material with good thermal conductivity. 1
6 is an inner lid that covers the upper opening of the inner pot 15;
is covered with an outer cover 17. Further, a heating element 18 for heat retention is arranged all around the upper side surface of the outer pot 12. 19 is a heat insulating material interposed between the cylindrical rice cooker main body 11 and the outer pot 12; 20 is a box-shaped display board; this display board 2o has a plurality of push button switches 21, a display 22, etc. A circuit board 23 having a structure is housed inside. In addition, the display board 20
A film-like decorative sheet 24 is attached to the operation panel, and operation signals from the circuit board 23 are transmitted to the control circuit board 26 via lead wires 26. 27 is a sensor that comes into contact with the bottom of the inner pot 15 to detect the temperature. 28 is a circular heat shield plate A attached to the outer pot 12, and 29 is attached to the lower frame 30 of a synthetic resin 5cm-7゜ fitted to the cylindrical main body 11. The heat shield plate A28 and the heat shield plate B29 (d) are both made of a material with good heat reflectivity.It is a 31-piece cord reel.

Further, the outer peripheral end 28a of the heat shield plate A28 attached to the outer pot 12 is brought into contact with the side part of the heat insulating material 19, and the lower frame 3
The end face part 29a of the heat shield plate B29 attached to the heat shield plate B29 is pressed against the lower end part of the heat insulating material 19 to form a double heat shield structure. A closed space A is formed, and a heat shield plate B2
Since the second closed space B is formed by the heat insulating material 19 and the heat insulating material 19, it is possible to greatly suppress the increase in ambient temperature due to radiant heat and heat convection from the heating element 14 for cooking rice, and as a result, the resin molding It is possible to prevent thermal deformation of the lower frame 3Q, which is a product, and also to reliably protect the electronic components on the control circuit board 26.

Effects of the Invention As described above, according to the present invention, the outer pot is equipped with 6 bays and 7 bowls.
The outer peripheral edge of the heat shield plate A is brought into contact with the side part of the heat insulating material covering the outer periphery of the outer pot, and the end surface of the heat shield plate B, which is provided with a resin lower frame trap, is brought into contact with the side part of the heat insulating material covering the outer periphery of the outer pot. Since the heat shield plate A and the heat insulating material are pressed into contact with the ends of As a result, it is possible to largely suppress the rise in ambient temperature due to radiant heat and thermal convection, thereby protecting resin molded products such as the bottom frame from thermal deformation, as well as protecting the control circuit board from heat deformation. electronic components can also be reliably protected. Further, since the end face portion of the heat shield plate B is pressed by the end portion of the heat insulating material, it will not rattle even if vibration occurs during movement.

[Brief explanation of the drawing]

FIG. 1 is a cutaway side view of a rice cooker showing an embodiment of the present invention;
FIG. 2 is a cutaway side view showing a conventional rice cooker. 11...Main body, 12...Outer pot, 14...
...Heating element for rice cooking, 19...Insulation material, 26.
... Control circuit board, to 7-7 28 ... Heat shield A, 28a ... Outer peripheral end, 29 ... Heat shield B, 29a ... ...End face part.

Claims (1)

[Claims] A cylindrical main body, a heating element for rice cooking, and a heat shield plate A, and an outer pot provided inside the main body, a heat insulating material covering the outer periphery of the outer pot, a heat shield plate B, and a control circuit. comprising a substrate, and
a lower frame made of resin that is fitted into the cylindrical main body, and the outer peripheral end of the heat shield plate A is brought into contact with the side part of the heat insulating material,
A rice cooker characterized in that the end face of the heat shield plate B is pressed against the end of the heat insulating material to form a double heat shield structure.