JPS5937145Y2 - electric heating pot - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of an electric heat-retaining pot in which an inner container is housed inside an outer cylinder.

Conventionally, in an electric heating pot, an electric heater is attached to the lower outer periphery of the inner container, and all the hot water stored in the inner container is supplied to the outside during normal hot water supply operation. If the electric circuit of the electric heater is connected to an external power source and the electric circuit of the electric heater is left in the state described in 11 without immediately replenishing water into the inner container after hot water is supplied to the outside, the temperature of the inner container may be detected due to the external heat radiation of the inner container. The electric heater is reenergized upon detection of a low temperature in the pot, and the electric heating pot becomes dangerously dry due to the rapid heating of the electric heater with no heating load.

The object of the present invention is to provide an electric heat-retaining pot with an easy-to-assemble structure that does not cause the above-mentioned dry boiling state during normal hot water supply operations.

The present invention will be described below based on drawings showing embodiments thereof.

Figure 1 shows a longitudinal section of the electric heat-retaining pot according to the present invention.
In the figure, reference numeral 1 denotes a wide-mouthed inner container, in which an outer curved annular flange 1a formed at the upper end of the opening is covered with an annular backing 2, and the lower surface 2a of the annular backing 2 is a shoulder member provided on the upper part of the outer cylinder 3. 4 is placed on the upward annular flat surface 4a.

At the bottom of the outer cylinder 3, the upper end edge 5a of the cylindrical leg 5 is connected to the outer cylinder 3.
The lower end edge 3a of the inner container 1 and the upper end edge 6a of the bottom member 6 are sandwiched, and the connecting member 7 provided on the bottom surface 1b of the inner container 1 and the bottom member 6 are connected 19 in a tension manner via a washer 8. As a result, the lower surface 2a of the annular backing 2 is compressed and fixed onto the upward annular flat surface 4a of the shoulder member 4 in a watertight manner.

A drain pipe 9 is provided in the lower small diameter portion 1c of the inner container 1, protruding outward from the front of the peripheral wall 1d slightly above the innermost bottom surface 1e of the inner container 1, and the drain pipe 9 has an outward opening. The end portion 9a is opened approximately midway between the peripheral wall 1d and the outer cylinder 3.

Reference numeral 10 denotes an external faucet, and after inserting a small diameter screw portion 10c provided on a rear end flange 10b of the external faucet 10 into an insertion hole 3b formed in the lower front part of the outer cylinder 3 from the outside, The nut 11 is tightened and fixed on the small diameter screw part 10c to fix the rear end flange part 10b to the outer cylinder 3, and the connecting end 10a of the external faucet 10 is opened inside the outer cylinder 3. be.

The connection part 10a of the external faucet 10 and the external opening end 9a of the drain pipe 9 are connected to a flexible connecting pipe 1 made of silicone rubber or the like.
It is connected by 2.

Numeral 13 is a tightening link for ensuring the connection of the flexible connecting pipe 12.

Although not shown, the external opening end 9a of the drain pipe 9 is made to protrude outside the outer cylinder 3, and the external opening end 9a opened to the outside of the external cylinder 3 and the external faucet 10 are connected. Of course, it is also possible to connect directly to the connecting portion of the connector by appropriate means.

In this case, in order to facilitate the storage and assembly of the inner container 1 into the outer tube 3, a notch is provided from the front of the lower edge 3a of the outer tube 3 instead of the insertion hole 3b of the outer tube 3. A decorative plate (not shown) may be attached to the outer peripheral surface of the outer cylinder 3 to cover the notch after the inner container 1 is housed inside the outer cylinder 3.

Reference numeral 15 denotes a curved band-shaped electric heater, and as shown in FIG.
7 run portions 15c, 15c formed on each of the parts 5a,
As shown in FIG. 1, by connecting with appropriate means such as screws 14, the drain pipe 9 is connected at the side edge of the notch 15b.
The curved band-shaped electric heater 15 is tightly wound around the lower outer peripheral surface 1f of the inner container 1 so as to surround the entire or part of the outer periphery of the inner container 1.

Although the illustration of the housing is omitted, a notch is provided at an appropriate location near the upper or lower circumferential edge of the curved band-shaped electric heater 15, so that a part of the outer periphery of the drain pipe 9 is surrounded by the side edge of the notch. Of course, it is also possible to tightly wrap the curved band-shaped electric heater 15 around the lower outer peripheral surface 1f of the inner container 1.

A bowl-shaped heat shield plate 16 is provided around the outside of the curved band-shaped electric heater 15, and a cutout recess 16a is provided in the front drain pipe portion of the heat shield plate 16, so that the bottom of the heat shield plate 16 is A part of the wall is clamped and fixed between the connecting member 7 and the washer 8.

The outer peripheral surface of the heat shield plate 16 and the space between the outer peripheral surface of the inner container 1 and the outer cylinder 3 are filled with a heat insulating material 18.

Reference numeral 17 denotes a lid, and a threaded portion 17a corresponding to the threaded portion 4b formed on the upper inner peripheral side of the shoulder member 4 is formed on the outer peripheral side of the lid 11. The structure is such that when the body 17 is screwed downward, the peripheral lower surface 17b of the lid body 17 is pressed against the upper surface 2b of the annular backing 2.

A suitable steam venting means 17c is provided in the center of the lid 17.

Although not shown in FIG. 1, a thermal reed switch, a thermostat, etc. are installed near the bottom surface 1b of the inner container 1, and an external connection outlet and an external connection are installed in the space A between the heat shield plate 16 and the bottom member 6. Of course, a temperature controller etc. can be installed.

Further, in FIG. 1, a lower small diameter portion 1c is formed below the inner container 1, but it is also possible to form a cylindrical body with the same diameter without forming the lower small diameter portion 1c. Of course, it is also possible to have a structure in which the rear end is pivoted to the upper rear end of the outer cylinder 3 so as to be openable and closable.

Next, a method of assembling the electric heating pot according to the present invention will be explained.

First, the annular backing 2 is fitted onto the outwardly curved annular collar portion 1a of the inner container 1 with the drain pipe 9 protruding outward.

Additionally, a curved band-shaped electric heater 15 is tightly wound around the lower outer peripheral portion 1f of the inner container 1.

After attaching the flexible connecting pipe 12 to the drain pipe 9, a part of the bottom wall of the heat shield plate 16 is clamped and fixed between the connecting member 7 and the washer 8.

Next, after placing the shoulder member 4 on the upper edge 3c of the outer cylinder 3, the inner container 1 is inserted into the outer cylinder from above, and the lower surface 2a of the annular backing 20 is placed on the upward annular flat surface 4a of the shoulder member 4. Place it on top.

Furthermore, after inserting the nut 11 to the outside of the outer periphery of the flexible connecting pipe 12, while inserting the small diameter threaded part 10c of the external faucet 10 into the insertion hole 3b of the outer cylinder 3 from the outside, connect the connecting part 10a and the The external faucet 10 is fixed to the outer cylinder 3 by connecting the flexible connecting pipe 12 and tightening the nut 11.

Further, after filling the heat insulating material 18, the outer cylinder 3 is attached to the leg part 5.
The bottom member 6 and the washer 8 are connected 19 in a tensioned manner by being placed on the upper edge 5a of the bottom member 6 and the washer 8.

Finally, the lid 17 is screwed onto the shoulder member 4 to complete the assembly of the electric heat-retaining pot.

As described in detail above, the electric heat-retaining pot according to the present invention has a drain pipe projecting outward from the peripheral wall of the inner container slightly above the innermost bottom surface of the inner container, and connects the connecting end of the external faucet to the drain pipe. Since the outer opening of the pipe is connected with a flexible connecting pipe, the hot water stored in the inner container can be supplied to the outside by normal operation of using the electric heating pot in a horizontal position. Also, the bottom space B (first
Since some water remains in the container (see figure), it is possible to prevent dry cooking.

Further, in the electric heat-retaining pot according to the present invention, the curved strip-shaped electric heater is closely wrapped around the lower outer circumferential surface of the inner container so that the side edge of the notch part of the curved strip-shaped electric heater surrounds all or part of the outer circumference of the drain pipe. Due to the rotating structure, even if the drain pipe is protruded from the peripheral wall of the inner container, the peripheral wall in contact with the residual water in the bottom space B of the inner container and the peripheral wall approaching the residual water are suitable for preventing dry cooking. The electric heater can be easily installed on the outer circumferential surface of the inner container, and the contact heat transfer surface of the electric heater can be secured on the outer circumferential surface of the inner container near the drain pipe, which contributes to improving the heat transfer efficiency of the electric heater. It has many excellent advantages such as being a dog.

[Brief explanation of drawings]

Figure 1 is a longitudinal cross-sectional view of the electric heating pot according to the present invention, Figure 2
Figures a + b are perspective views of a curved strip electric heater. DESCRIPTION OF SYMBOLS 1... Inner container, 1e... Internal lowest bottom surface, 3... Outer cylinder, 9... Drain pipe, 10... External faucet, 10a...
- Connection end, 12... Flexible connecting pipe, 15... Curved band-shaped electric heater, 15a... Butt end, 15b...
- Notch part, 15c...flange part.

Claims (1)

[Scope of utility model registration request] The inner container is stored inside the outer cylinder, and the button is placed in the electric heat-retaining pot.
A drain pipe is provided to protrude outward from the peripheral wall of the inner container slightly above the innermost bottom surface of the inner container, and the connecting end of the external water faucet is connected to the external opening end of the drain pipe and a flexible connecting pipe, etc. By connecting flanges formed at the abutting ends of curved band-shaped electric heaters with notches at appropriate locations with or without intervening, and connecting with appropriate means, the drain pipe can be connected with the side line of the notch. An electric heat-retaining pot characterized in that a curved band-shaped electric heater is tightly wound around the lower outer peripheral surface of the inner container so as to surround the entire or part of the outer periphery.