JPH0342088B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a vacuum type electric heating pot for general household use.

Conventional technology Conventionally, this type of vacuum type electric heating pot was developed in the
As disclosed in Publication No. 57-166840, a metal inner container and an outer container form a vacuum double container having a vacuum space, and a known bellows type air pump is built in the upper part of the vacuum double container. Place the lid,
In addition, an inner stopper part, which is located below the pump and is equipped with a liquid lift pipe, a discharge pipe, and an air injection pipe, is installed in close contact with the upper part of the container, and furthermore, a vacuum insulation space is formed between the inner container and the outer container. The single bottom portion is made of an integral metal plate, and a band-shaped heating element is attached to the outer periphery of the single bottom portion. In addition, the liquid level display device for the stored liquid is
A transparent display pipe communicating with the inside of the vessel was installed on one side of the vessel, and a protective cover was installed from the outside to protect the entire display pipe.

Problems to be Solved by the Invention In such a conventional configuration, it is impossible to store liquid simply by opening the lid unless the inner stopper, which is integrated with the liquid lift pipe and outlet pipe, is removed. A large amount of heat is also radiated from the lid located at the top of the container, the heater section at the bottom, and the liquid level display pipe, and as a result, the effectiveness of the vacuum double container in preventing heat loss is significantly impaired.

The present invention solves these problems,
In addition to making it easy to store liquid in the inner container and cleaning the inside of the inner container, it also prevents heat loss from the lid that covers the top opening of the double vacuum container and the heater section located at the bottom of the double vacuum container. An object of the present invention is to provide a vacuum-type electric heat-retaining pot that can prevent the above-mentioned problems and enhance the heat-retaining effect of a vacuum double container.

Means for Solving the Problems In order to solve the above problems, the present invention includes a vacuum double container formed of an inner container and an outer container made of metal, and the upper end opening of the vacuum double container is insulated. The vacuum double container is covered with a lid having a layer, and a heat insulating layer is provided on the heater section disposed on the bottom of the vacuum double container, and a liquid pumping pipe for sucking up the liquid contained in the inner container is provided near the bottom of the inner container. One end of the liquid lifting tube is exposed, and the other end of the liquid lifting tube projects upwardly from the upper container through the vacuum space between the inner container and the outer container, and a discharge tube is attached to the tip thereof.

Effect According to the above configuration, the liquid volume display pump is eliminated, and the liquid lift pipe that sucks up the liquid contained in the inner container is made to protrude upward from the upper container through the vacuum space between the inner container and the outer container. Since a discharge pipe is attached to the tip of the pipe to discharge liquid, there is no heat loss from these pipes, unlike in the conventional case where the liquid volume display pump and liquid lift pipe were installed separately. In addition, the top opening of the vacuum double container without a vacuum layer is covered with a lid with a heat insulating layer, and the heater section located on the bottom of the vacuum double container is also provided with a heat insulating layer. Heat loss from these lids and heater parts can be reliably prevented, and as a result, the heat retention effect of the vacuum double container can be enhanced, and the liquid lift pipe and outlet pipe can be integrated, unlike conventional ones. Since there is no inner stopper, it is easy to store liquid in the inner container and to clean the inside of the inner container.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings. In the figure, 1 is a vacuum double container, and this vacuum double container 1 consists of an upper container 2, a lower container 3, and an inner container 4.
and an outer container 5, and the space 6 between them is vacuum-treated. The members constituting this vacuum double container 1 are made of metal such as 18-8 stainless steel plates, which have low thermal conductivity, and are fixed together by welding base metals to each other, and the entire structure is formed into a cylindrical shape with a bottom. There is. In addition, a heater section 9 attached from the bottom surface 7 side of the vacuum double container 1 is housed in the inner container 4 in a hole provided approximately in the center of the double bottom surface 7 of the vacuum double container 1. It is fitted through a gasket 11 that prevents the liquid 10 from leaking.

The heater section 9 has a substantially disc-shaped configuration, and the periphery thereof serves as a heating element 12, and a thermostat 13 for arbitrarily controlling the temperature of the liquid 10 is provided inside near the center. Further, an outlet pipe 14 for the liquid 10 is provided in the inner container 4 near the bottom surface 7. A heat insulating layer 15 is provided on the outer bottom surface of the vacuum double container 1 so as to cover the lead wire of the thermostat 13.
is fixed. The outlet pipe 14 also has a liquid lift pipe 16 for sucking up the liquid contained in the inner container 4.
One end of the liquid lift pipe 16 communicates with the other, and the other end of the liquid lift pipe 16 extends vertically through the vacuum space 6 between the inner container 4 and the outer container 5, projects upward from the upper container 2, and has a discharge pipe 18 at its tip. I am wearing it.

On the other hand, the upper opening 8 of the vacuum double container 1
In order to facilitate the storage of 0 and the cleaning of the inner container 4,
The diameter is at least 80 mm or more so that cleaning tools or hands can easily enter, and a vacuum space 6 extends from the upper part of the vacuum double container 1.

The vacuum double container 1 constructed in this manner is covered with an upper body 19, a cylindrical side body 20, a lower body 21, a back plate 22, and a display frame 23, and is held via a mounting bracket 24 and a packing 25. ing. A portion of the display frame 23 is fitted with a liquid crystal content display section 26 for displaying the content of the liquid 10, so that the amount of the liquid 10 can be confirmed from the outside using the content display section 26.

Further, the opening 8 is provided with a bowl-shaped lid cover 29 that is fixed to the lower cover 28 of the lid 27 that is engaged with the upper body 19. A heat insulating layer 30 is formed in the space. The lid cover 29 is fitted into the opening 8 so as not to hit the opening 8 when the lid 27 is opened using the pin 31 as a rotational fulcrum, and the tip of the lid cover 29 is fitted in order to make the heat insulating layer 30 as thick as possible. It hangs down slightly toward the inner container 4 side. Further, in the center of the lid cover 29, there is an air injection pipe 31 connected to the space inside the inner container 4, and this air injection pipe 31 communicates with a bellows type air pump 32.

33 is an ultrasonic oscillator embedded in the lid cover 29, and 34 is a receiver for this, which detects the content of the liquid 10 and displays it on the content display section 26.

The liquid lifting pipe 16 can be constructed without increasing the size of the container by passing the inner container 4 through the larger side of the vacuum space 6 which is slightly eccentric with respect to the outer container 5. Further, by making the cross section of the liquid lift pipe 16 flat, this effect can be further enhanced. more liquid 1
Since the content of 0 is not displayed using a conventional display pipe, there is almost no heat loss. In this case, in order to improve the storage and cleaning of the liquid 10, it is easy to consider a method in which the liquid lift pipe 16 is provided from the inner lid to the outside of the container, but in this case, there is a large amount of heat loss from the liquid lift pipe 16. Further, since the liquid 10 in the outlet pipe 14 and the liquid lift pipe 16 is cooled, the liquid starts to be dispensed cold, which is disadvantageous in that the taste of the tea etc. is spoiled.

In one embodiment of the present invention, the liquid 1 contained in the inner container 4 is configured as described above.
When the lid 27 is opened, liquid 10 can be easily poured into the inner container 4 through the wide opening 8 without an inner lid. It boils well. And this liquid 1
0, when the predetermined temperature is reached, the thermostat 13
The heater section 9 is turned on and off to keep it warm at a constant temperature. Further, the liquid 10 is kept warm by the entire side surface and most of the bottom of the vacuum double container 1 and the vacuum space 6 around the opening 8 with extremely little heating power. Also, the outlet pipe 14 and the liquid lift pipe 16
Since it passes through the vacuum space 6, there is less heat loss. Furthermore, a heat insulating layer 30 is provided in the opening 8.
In addition, since the heat insulating layer 15 is provided in the vicinity of the attachment part of the heater part 9, further heat loss can be prevented, thereby reducing the heat-retaining power.

Further, the heated liquid 10 is pressurized via the air injection pipe 31 by the compressed air from the bellows type air pump 32, and this liquid 10 is discharged to the outside from the discharge pipe 18 via the outlet pipe 14 and the liquid lift pipe 16. be done.

In addition, since the vacuum double container 6 is difficult to manufacture and the defect rate cannot necessarily be said to be low, the heater part 9
By configuring and separating them from the vacuum double container 6, they can be manufactured separately, thereby reducing the overall defective rate or amortization cost.

Effects of the Invention As described above, according to the present invention, the liquid volume display pipe is eliminated and the liquid lift pipe for sucking up the liquid contained in the inner container is placed above the upper container through the vacuum space between the inner container and the outer container. The pipe protrudes from the pipe and a discharge pipe is attached to the tip of the pipe to discharge the liquid. In addition, the top opening of the double vacuum container without a vacuum layer is covered with a lid with a heat insulating layer, and the heater part located at the bottom of the double vacuum container is also covered with a heat insulating layer. As a result, heat loss from these lids and heater parts can be reliably prevented.As a result, the heat retention effect of the vacuum double container can be enhanced, and there is no need to use the conventional pumping pipe or outlet. Since there is no inner stopper with an integrated tube, it is easy to store liquid in the inner container and to clean the inside of the inner container.

[Brief explanation of drawings]

The figure is a sectional view of a vacuum type electric heat-insulating pot showing an embodiment of the present invention. 1... Vacuum double container, 2... Upper container, 4... Inner container, 5... Outer container, 6... Vacuum space, 7... Bottom, 8... Opening, 9... Heater part, 15 ...Insulating layer, 16... Lifting pipe, 18... Discharge pipe, 30...
...Insulating layer.

Claims (1)

[Claims] 1. A vacuum double container consisting of an inner container and an outer container made of metal, the top opening of the vacuum double container being covered with a lid having a heat insulating layer, and a lid provided on the bottom of the vacuum double container. In addition to providing a heat insulating layer in the heater section, one end of the liquid lift pipe for sucking up the liquid contained in the inner container is exposed near the bottom of the inner container, and the other end of this liquid lift pipe is connected to the inner container and the outer container. A vacuum-type electric heating pot that protrudes upward from the upper container through the vacuum space between the containers, and has a discharge tube attached to its tip.