JP2002253425A - Electric pot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric pot which has a very simple structure, allows a reliable sensing of the liquid temperature in the pot and can reliably heat the liquid in the pot and maintain its temperature. SOLUTION: In the electric pot provided with a heater 8 opened in the center on the outer peripheral wall of the bottom of a stainless container 2, a temperature controller 9 inside the container 2, a bottom cover 28 opened in the center for covering a bottom plate 24 opened in the center welded on the outer peripheral wall of the bottom of the container 2 while covering a rear plate 23 opened in the center for covering the lower face of the heater 8 and a bottom member 5 on the lower end of an outer case 3 and constituted by fixing the bottom cover 28 and the bottom member 5, the temperature controller 9 is inserted through the bottom cover 28 and abutted on the center of the bottom wall of the container 2 provided with a gap with the outer peripheral end of the central opening of the heater 8, an attaching plate 33 for temperature controller is inserted between both terminals 32 and 32 of the temperature controller 9, the outer peripheral wall of the temperature controller 9 is held between two supports 34 and 34, and both the terminals of the attaching plate 33 for temperature controller are screwed on the bottom cover 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric pot in which a temperature controller is attached to a bottom central outer wall of an inner container.

[0002]

2. Description of the Related Art Conventionally, an electric pot is provided with a stainless steel bottomed cylindrical inner container, a heater for heating the liquid in the inner container is provided on the bottom outer wall of the inner container, and the liquid temperature in the inner container is sensed. The temperature controller, which turns the heater ON and OFF, is held at the bottom of the side wall of the inner container. If hot water in the inner container remains at a position lower than the position of this temperature controller, the temperature controller turns on the heater. As a result, a boiling state is caused, which is very dangerous, and the heater is easily disconnected.

In view of the above, a stainless steel bottomed cylindrical inner container is provided, a heater having a central opening for heating the liquid in the inner container is provided on the bottom outer wall of the inner container, and the heater detects the liquid temperature in the inner container. A temperature controller for turning on and off the heater, a center opening back plate covering the lower surface of the heater is provided, a center opening bottom backing plate spot-welded to the bottom outer peripheral wall of the inner container covering the back plate, A bottom cover with a central opening covering the backing plate is provided, the temperature controller is pressed down by the bottom cover, a shoulder member is provided at the upper end of the outer case surrounding the inner container, and a lid body with a built-in bellows pump is provided at the upper end of the shoulder member. It was detachably mounted, a bottom member was provided at the lower end of the outer case, and the bottom cover and the bottom member were fixed at an angle.

[0004]

However, in this type of electric pot, the temperature controller is pressed by the bottom cover, and when the temperature controller is brought into contact with the bottom center outer wall of the inner container, the heat of the heater is reduced to the bottom. Even though the outer wall of the temperature controller is heated by passing through the cover and the liquid temperature inside the inner container is sensed, the accurate temperature of the inner container cannot be sensed due to the influence of the heat from the outer wall. There is a problem that the liquid in the inner container cannot be sufficiently heated and kept warm.

Therefore, the present invention has solved the problem of such a conventional electric pot, and has a simple structure and can reliably detect the liquid temperature in the inner container. Another object of the present invention is to provide an electric pot that can steadily heat and keep the liquid in an inner container.

[0006]

In order to achieve the above object, the electric pot of the present invention is provided with a stainless steel bottomed cylindrical inner container 2, and the liquid in the inner container is placed on the bottom outer wall of the inner container. A heater 8 having a central opening for heating is provided, a temperature controller 9 for sensing the liquid temperature in the inner container 2 to turn on and off the heater is provided, and a back plate 23 having a central opening for covering a lower surface of the heater 8 is provided.
A center opening bottom cover plate 24 spot-welded to the bottom outer peripheral wall of the inner container 2 covering the back plate 23, a center opening bottom cover 28 covering the bottom cover plate 24 is provided, and the exterior surrounding the inner container 2. A shoulder member 4 is provided at an upper end of the case 3, a lid 7 with a built-in bellows pump is detachably attached to an upper end of the shoulder member 4, a bottom member 5 is provided at a lower end of the outer case 3, and a bottom cover 28 and a bottom member 5 are provided. In an electric pot in which the inner space is fixed by an angle, the temperature controller 9 is inserted through the central opening of the bottom cover 28 to provide a gap between the inner peripheral portion of the heater 8 and the outer periphery of the central opening. And a support plate 34 for holding the outer peripheral wall of the temperature controller 9 therebetween, and a non-conductive and heat-resistant mounting plate 33 for the temperature controller. The mounting plate 33 is connected to both terminals 32 of the temperature controller 9,
32, the outer peripheral wall of the temperature controller 9 is sandwiched between the two support pieces 34, 34, the temperature controller 9 is mounted, and both ends of the mounting plate 33 for the temperature controller are screwed to the bottom cover 28. The temperature controller 9 is pressed down.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a plan view showing a bottom portion of an inner container of the embodiment of the present invention, FIG. 3 is an exploded perspective view showing a main part of the embodiment of the present invention, and FIG. FIG. 5 is a perspective view showing a heater mounting state of the embodiment of the present invention, FIG. 5 is a perspective view showing a back plate mounting state of the embodiment of the present invention, FIG. FIG. 8 is a perspective view showing a bottom cover attached state of the embodiment of the present invention, FIG. 8 is a perspective view showing a set state of the inner container bottom part of the embodiment of the present invention, and FIG. 9 is a back side of the temperature controller attaching plate of the embodiment of the present invention. FIG.

The electric pot 1 includes an outer case 3 surrounding the inner container 2, a shoulder member 4 connected to an upper end of the outer case 3, a bottom member 5 connected to a lower end of the outer case 3, and an upper end of the shoulder member 4. Removable Bellows Pump 6 Built-in Lid 7
A heater 8 for heating the liquid in the inner container 2;
It comprises a temperature controller 9 that senses the temperature of the liquid inside and turns on and off the heater 8 and a discharge mechanism 10 that discharges the liquid inside the inner container 2 to the outside. 44 is a handle.

The inner container 2 is made of a metal material such as stainless steel and has a cylindrical shape with a bottom. As shown in FIG. 1, the upper end opening is once narrowed inward and then formed in a wide mouth which is expanded outward. Is provided with a flange extending outward. The flange of the inner container 2 is in close contact with the lower surface of the peripheral wall forming the central opening of the receiving portion of the shoulder member 4 described below via packing.

As shown in FIG. 3, the inner container 2 has a peripheral end portion 19 on the bottom outer wall, and a heater mounting portion 20 slightly higher than the peripheral end portion 19 in the center surrounded by the peripheral end portion 19. A central portion 21 slightly higher than the heater mounting portion 20 is provided at the center surrounded by the heater mounting portion 20. A lower pipe 1 communicating with the inside of the inner container 2 is provided at a peripheral end portion 19 in front of the inner container 2.
1 is hanging.

The outer case 3 is formed into a substantially cylindrical shape by rolling a thin metal plate, and a gap is provided between the outer case 3 and the inner container 2. The cylindrical outer case 3 has a front part partially cut out in the vertical direction, a transparent plate is fitted into the cut part, and a pumping pipe 40 of the discharge mechanism 10 described later can be visually observed through the transparent plate. .

The shoulder member 4 is provided with an opening communicating with the central opening of the inner container 2 made of a synthetic resin material, and has a receiving portion extending upward and outward from the opening, and an inner cavity extending forward from the front portion of the receiving portion. The beak portion 13 and an outer peripheral wall portion hanging down from the outer peripheral end of the receiving portion are integrally formed. The shoulder member 4 is in contact with the flange of the inner container 2 at the upper end of the peripheral wall forming the opening. The beak portion 13 of the shoulder member 4 is hollow inside, has an upper surface closed, has a lower surface opened, and is covered with a beak portion cover 14.

The lid 7 is pivotally supported above the rear end of the shoulder member 4 by a hinge, and is removably attached to the shoulder member 4 by a lock device, and pushes up the bellows pump 6 and the bellows pump 6. A spring 15, a bush valve for opening and closing the upper opening of the bellows pump 6, and pressing this bush valve,
A push plate 16 for pumping the air in the bellows pump 6 into the inner container 2 is built in. The lower surface is covered with a lower cover 17, the upper surface is covered with an upper cover 18, and the lower cover 17 is covered with a stainless steel cover plate 22. Covered.

As shown in FIGS. 3 and 4, the heater 8 is formed in a thin flat plate shape fitted into the heater mounting portion 20 of the inner container 2, and has a square opening at the center. 31 and 31 are terminals of the heater 8.

As shown in FIGS. 3 to 5, the back plate 23 covering the bottom surface of the heater 8 is formed of a metal material such as aluminum into a thin flat plate shape fitted into the heater mounting portion 20, and is formed at the center. A circular opening is provided and terminals 3 of heater 8 are provided.
One side is cut off. This back plate 23 functions to prevent heat radiation from the bottom surface of the heater 8.

A bottom plate 24 for fixing the back plate 23 together with the heater 8 in the heater mounting portion 20 of the inner container 2 is made of a metal material, as shown in FIGS. An outer peripheral portion 25 that comes into contact with the portion 19, an abutting portion 26 that presses the back plate 23 at the center of the outer peripheral portion 25, and is provided on all sides of the outer peripheral portion 25 so as to extend downward from the outer peripheral portion 25 and have an appropriate interval. The angle pieces 27 are integrally formed, and the outer peripheral portion 25 is spot-welded to the peripheral end portion 19 of the inner container 2.

As shown in FIGS. 3 to 6, the bottom plate 24 has an opening at the center, and has a hole passing through the terminals 31 of the heater 8 and a hole passing through the lower pipe 11 of the inner container 2. Has been drilled.

As shown in FIGS. 2 and 8, a bottom cover 28 which covers the contact portion 26 of the bottom backing plate 24 is opened at the center and is provided with a cutout 29 through which a terminal 31 of the heater 8 passes. A fixed piece 30 to be screwed to each angle piece 27 of the bottom plate 24 is formed integrally with the outer peripheral end on the diagonal line intersecting. This bottom cover 28 covers the bottom plate 24 with a gap provided between the bottom cover 24 and the bottom plate 24 so that the heat of the heater 8 does not escape through the bottom cover 28.

The temperature controller 9 is a thermostat formed in a small cylindrical shape, and is a spot-welded bottom backing plate 2.
4 is in contact with the central portion 21 of the inner container 2 through the central opening. This temperature controller 9 is provided with temperature controller terminals 32, 32 at diagonal ends of the bottom surface.

The diameter of the temperature controller 9 is determined by the central opening 21 of the inner container 2 and the central opening of the overlapping heater 8, the central opening of the back plate 23, the central opening of the bottom plate 24, and the bottom cover 28.
The openings are smaller than the central opening and are spaced apart from the peripheral wall forming each opening.

The temperature controller 9 is connected to the central portion 21 of the inner container 2.
The mounting plate 33 for the temperature controller to be pressed and fixed is made of a material such as Bakelite, which is non-thermally conductive and has excellent heat resistance.
As shown in FIG. 6 to FIG. 6, it is formed in a square rod shape, and as shown in FIG. 9, support pieces 34, 34 for supporting the side wall of the temperature controller 9 from outside are provided on the back side.

The mounting plate 33 for the temperature controller is passed between the two terminals 32 for the temperature controller, and both ends thereof are positioned at the center of the bottom cover 28 with the outer peripheral wall of the temperature controller 9 sandwiched between the two support pieces 34. Screws are mounted on the diagonal line across the opening. Since the temperature controller mounting plate 33 is formed of a non-thermally conductive material, the heat of the heater 8 transmitted to the bottom cover 28 is not transmitted to the outer peripheral wall of the temperature controller 9 at all.
Further, since the temperature controller mounting plate 33 is excellent in heat resistance, it is not deformed by heat.

Reference numeral 35 denotes an insulator, and 36 denotes a thermal fuse.
As shown in FIG. 7, screws are attached to the bottom cover 28, respectively. As shown in FIG. 2, the fixing piece 30 of the bottom cover 28
An angle 37 for attaching the bottom member 5 is screwed.

The bottom member 5 is composed of a ring-shaped bottom wheel 38 in contact with the lower end of the outer case 3 and a bottom plate 39 for closing the opening of the bottom wheel 38. The bottom plate 39 is formed of a metal material into a thin disk shape, and its outer periphery is in contact with the bottom wheel 38 and the bottom plate 39 is attached to the fixed piece 30 of the bottom cover 28 with bottom screws.
7 to tighten the inner container 2 and the outer case 3 between the bottom wheel 38 and the shoulder member 4.

The discharge mechanism 10 includes a pumping pipe 40 also serving as a liquid amount indicating pipe, a U-shaped first holder 41 connecting the pumping pipe 40 and the lower pipe 11 of the inner container 2, It comprises a discharge pipe 42 for discharging the liquid to the outside, and a second holder 43 provided between the discharge pipe 42 and the pumping pipe 40 and provided with a water stop valve mechanism.

Although the embodiment which is considered to be a representative example of the present invention has been described above, the present invention is not necessarily limited to the structure of the embodiment. Vacuum double stainless steel thermos, etc., having the above-mentioned constitutional requirements according to the present invention, and achieving the object of the present invention, appropriately modified and implemented within a range having the following effects. Is what you can do.

[0027]

As is clear from the above description, the electric pot according to the present invention is provided with a stainless steel bottomed cylindrical inner container and heats the liquid in the inner container on the bottom outer wall of the inner container. Provide a heater with a central opening to perform, and a temperature controller to turn on and off the heater by sensing the liquid temperature in the inner container,
A center-opening back plate that covers the lower surface of the heater is provided, a center-opening bottom cover that is spot-welded to the bottom outer peripheral wall of the inner container that covers the back plate, and a center-opening bottom cover that covers the bottom cover is provided. , A shoulder member is provided at the upper end of the outer case surrounding the inner container, a lid body with a built-in bellows pump is detachably attached to the upper end of the shoulder member, and a bottom member is provided at the lower end of the outer case, and the bottom cover and the bottom member are provided. In an electric pot fixed at an angle, the temperature controller is inserted through the center opening of the bottom cover, and the center of the inner container is provided with a gap between the outer peripheral end of the heater and the center opening. It is provided with two support pieces that abut and sandwich the outer peripheral wall of the temperature controller, and a non-conductive, heat-resistant mounting plate for the temperature controller is provided, and the mounting plate for the temperature controller is connected between both terminals of the temperature controller. Through the outer peripheral wall of the temperature controller between the two support pieces. They crowded in, fitted with a temperature controller,
Since the temperature controller mounting plate is screwed to the bottom cover at both ends and pressed down on the temperature controller, the structure is very simple and the liquid temperature inside the inner container can be detected reliably. Thus, a remarkable effect that the liquid in the inner container can be steadily heated and kept warm can be expected.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention.

FIG. 2 is a plan view showing a bottom portion of the inner container according to the embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a main part of the embodiment of the present invention.

FIG. 4 is a perspective view showing a heater mounting state according to the embodiment of the present invention.

FIG. 5 is a perspective view showing an attached state of a back plate according to the embodiment of the present invention.

FIG. 6 is a perspective view showing a state in which a bottom backing plate is mounted according to the embodiment of the present invention.

FIG. 7 is a perspective view showing a state in which the bottom cover is mounted according to the embodiment of the present invention.

FIG. 8 is a perspective view showing a set state of a bottom portion of the inner container according to the embodiment of the present invention.

FIG. 9 is a perspective view showing the back side of the mounting plate for the temperature controller according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Electric pot 2 ... Inner container 3 ... Outer case 4 ... Shoulder member 7 ... Lid 8 ... Heater 9 ... Temperature controller 10 ... Discharge mechanism 21 ... Central part 23 ... Back plate 24 ... Bottom cover plate 28 ... Bottom cover 31 ... Terminal 32 ... Temperature controller terminal 33 ... Temperature controller mounting plate 34 ... Support piece

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4B055 AA35 BA23 BA28 CA02 CA03 CA10 CA21 CA22 CA24 CA71 CB01 CB02 CB03 CB04 CB07 CB09 CC13 CC23 CC24 CC26 CC27 CC28 CC33 CC43 CC44 CC45 CC58 CC68 CD02 CD05 CD62 DB02 DB21 FB45 FC09 FC11

Claims (1)

[Claims] 1. A bottomed cylindrical inner container made of stainless steel (2).
A heater (8) having a central opening for heating the liquid in the inner container is provided on the bottom outer wall of the inner container (2), and the temperature at which the heater is turned on and off by sensing the temperature of the liquid in the inner container (2). A regulator (9) is provided, a back plate (23) having a central opening covering the lower surface of the heater (8) is provided, and an inner container (2) covering the back plate (23) is provided.
An outer case that surrounds the inner container (2) by providing a bottom opening plate (24) having a central opening spot-welded to the outer peripheral wall of the bottom plate and a bottom opening (28) covering the bottom opening plate (24). A shoulder member (4) is provided at the upper end of (3), a lid (7) with a built-in bellows pump is detachably attached to the upper end of the shoulder member (4), and a bottom member (5) is provided at the lower end of the outer case (3). )
In an electric pot in which the bottom cover (28) and the bottom member (5) are fixed at an angle, the temperature controller (9) is inserted through the central opening of the bottom cover (28), and the heater (8) is inserted. ), Two support pieces (34), (34) that abut against the center of the bottom wall of the inner container (2) having a gap between the outer peripheral end of the inner opening and the outer peripheral wall of the temperature controller (9). With
Mounting plate for temperature controller with non-heat conductivity and heat resistance (33)
The temperature controller mounting plate (33) is inserted between the two terminals (32) and (32) of the temperature controller (9) to adjust the temperature between the two support pieces (34) and (34). The temperature controller (9) is attached with the outer peripheral wall of the vessel (9) interposed therebetween, and both ends of the temperature controller mounting plate (33) are screwed to the bottom cover (28) to hold down the temperature controller (9). An electric pot characterized by becoming.