JPH0451743Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a metal vacuum double container electric air pot, and more specifically to the structure of its lid.

(Prior Art) Conventionally, this type of electric air pot has been prevented from radiating heat to the sides and downwards by a double vacuum container. However, no particular consideration was given to upward insulation, and the only thing that was done was to tighten the top end of the double vacuum container and make the diameter of the mouth smaller than that of the body, thereby suppressing heat radiation upward. . However, if the diameter of the mouth is made small, it becomes difficult to clean the inside of the double container.
The limit is to narrow it down to 85φ.

On the other hand, the lid that covers the double container has a built-in bellows pump, which makes it difficult to create a heat-insulating structure.

(Problems that the invention attempts to solve) As mentioned above, in the conventional electric air pot,
Since heat insulation is not taken into account in the lid, there is a problem in that a large amount of heat is radiated upward, and the electric heater consumes a large amount of power when keeping warm.

The present invention was developed in view of the above problems, and the object is to provide a metal vacuum double container type electric air pot that has a simple structure heat insulating lid on the lid body and can suppress heat radiation from the lid body. purpose.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides an electric air pot with a built-in bellows pump in the lid of a metal vacuum double container, in which a pack-like part is provided below the bellows pump. A heat insulating lid is provided which is made up of a heat insulating member and a heat resistant plate located below the heat insulating member and having a seal packing attached to the outer periphery, and the seal packing is in pressure contact with the container wall at the back of the mouth of the vacuum double container. This is how it was done.

(Example) Next, an example of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic sectional view showing a first embodiment of a heat insulating lid for an electric air pot according to the present invention.

In the figure, 1 is a vacuum double container made of stainless steel, in which an inner container 2 and an outer container 3 are joined at the upper end of the mouth, one or both of the inner container 2 and outer container 3 are plated with metal, and the vacuum container is A getter material is installed to hold the inner container 2 and the outer container 3, and the space 4 between the inner container 2 and the outer container 3 is evacuated to form an insulated container. The vacuum double container 1 has a heater (not shown) at the bottom, is housed in a bottomed cylindrical case, and is fitted with a lid housing a bellows pump.

Reference numeral 5 denotes a heat insulating lid attached to the lid body, and a heat insulating member 6 is connected to a heat resistant plate 7 made of metal or ceramic.
It is made up of.

The heat insulating member 6 is formed into a donut shape by housing a synthetic resin inner pack 11 filled with a heat insulating material 10 in a circular or occluded synthetic resin pack 9 having a through hole 8 in the center. This is what I did. Therefore, steam is doubly prevented from entering the heat insulating material 10, and the heat insulating function is not impaired. The heat insulating member 6 is attached to the lid below the bellows pump.

In addition, as the material of the heat insulating material 10, perlite, glass wool, calcium silicate, foamed polypropylene, etc. are used. In addition, inner pack 11
In addition to synthetic resin, synthetic resin-Al
Laminate, Al, etc. may also be used. Note that when the heat insulating material 10 is made of foamed polypropylene or the like having low water absorption, the inner pack 11 can be omitted.

The heat-resistant plate 7 is a circular stainless steel plate with a seal packing 12 attached to the outer periphery, and a steam pipe 13 in the center.
The steam port 14 is formed by standing upright. The heat-resistant plate 7 is detachable by press-fitting the steam pipe 13 into the through hole 8 of the heat insulating member 6 via the seal packing 15. At this time, an air layer 16 is formed at a predetermined interval between the heat-resistant plate 7 and the heat insulating member 6. Moreover, the seal packing 12 attached to the outer periphery of the heat-resistant plate 7 is
When the lid body is closed, it comes into contact with the stepped portion 17 formed at the back of the mouth of the vacuum double container 1 and closes the vacuum double container 1.
It has come to be sealed. Note that the seal packing 12 may be provided on the heat insulating member 6 and brought into contact with the stepped portion 17.

In the electric air pot equipped with the heat insulating lid 5 having the above configuration, when the water is boiling, the 100°C hot water or steam is blocked by the heat resistant plate 7, and
Since it is sealed by the seal packing 12 and does not come into direct contact with the heat insulating member 6, the pack 9 of the heat insulating member 6
And the inner pack 11 will not deteriorate or deform.
During heat retention, the sides and bottom of the vacuum double container 1 are insulated by the vacuum space 4, and the upper part is insulated by the insulating lid 5.
This will provide insulation.

That is, the heat-resistant plate 7 is heated by contacting with hot water or steam in the vacuum double container 1, but since the seal packing 15 and the air layer 16 are provided,
Heat conduction to the heat insulating member 6 is suppressed. Further, although convective heat is transferred from the heat-resistant plate 7 to the heat insulating member 6 via the air layer 16, since the heat is insulated by the heat insulating material 10, no heat flows upward from the heat insulating member 6. Since the member 6 is double-packed with the heat insulating material 10, entry of heat and water vapor is prevented.

Since the heat insulating lid 5 seals the vacuum double container 1 at the back of its mouth with the seal packing 12, the temperature rise at the end of the mouth is suppressed, and the heat insulating lid 5 and the vacuum double container 1 are sealed. Improves insulation performance. This means that if the seal packing 12 is located at the tip of the mouth, the inside of the vacuum double container 1 will be leaked from the vicinity of the seal packing 12 to the mouth of the vacuum double container 1 and the outer peripheral edge of the heat insulating member 6. This is because heat is short-circuited and flows out to the outside, but by sealing the back of the mouth of the vacuum double container 1, short-circuiting and outflow of heat is prevented.

FIG. 2 shows an electric air pot actually fitted with the heat insulating lid shown in FIG.

1 is a vacuum double container, 2 and 3 are its inner container and outer container, 21 is a case for storing the vacuum double container 1,
22 is a pumping pipe communicating with the bottom of the vacuum double container 1;
23 is a spout. A lid 24 is hinged to the case 21 so as to be openable and closable, and a well-known bellows pump 25 and a heat insulating lid 5 are mounted inside the lid 24.

The heat insulating lid 5 is made up of the heat insulating member 6 and the heat-resistant plate 7. The heat insulating member 6 is fixed to the lid body 24 with screws 26 below the bellows pump 25, and further below the heat insulating member 6, an air layer 16 is separated. Heat resistant plate 7
is detachably attached to a seal gasket 15 provided at the steam port 27. When the lid body 24 is closed, the seal gasket 12 comes into contact with a step 17 provided at the back of the mouth of the vacuum double container 1 and is sealed.

Here, the heat-resistant plate 7 is provided with an inclination so that the soup condensed in the air layer 16 does not flow on the heat-resistant plate 7 when the lid body 24 is opened. Also,
The heat insulating member 6 is not perfectly circular, but is formed into an appropriate shape such as a hollow circle so that the steam pipe 28 can be guided therethrough.

In the above embodiment, the heat-resistant plate 7 is provided removably, but it may be formed integrally with the heat-insulating member 6 by screwing or the like.

Next, other embodiments of the heat insulating lid will be explained according to FIGS. 3 to 5.
It is substantially the same as the embodiment, and corresponding parts are given the same numbers and explanations are omitted.

The heat insulating lid 51 shown in FIG. 3 uses the same heat insulating member 6 as shown in FIG.
is formed integrally with the heat insulating member 6 without providing an air layer between the heat insulating member 6 and the heat insulating member 6.

The heat insulating lid 52 shown in FIG. 4 partitions the space inside the pack 9 of the heat insulating member 31 with a partition plate 32 made of synthetic resin to suppress heat transfer by convection. Also in this embodiment, the heat-resistant plate 7 is formed integrally with the heat insulating member 31.

The heat insulating member 33 of the heat insulating lid 53 shown in FIG. 5 is constructed by attaching a synthetic resin corrugated plate 34 to the air layer partitioned by the partition plate 32 of the heat insulating member 31 shown in FIG.
Furthermore, convective heat transfer is suppressed.

Note that in the embodiments shown in FIGS. 4 and 5 as well, the heat insulating member 3 is similar to the embodiment shown in FIG.
An air layer may be provided between 1 and 33 and the heat-resistant plate 7.

(Effects of the invention) As is clear from the above explanation, according to the invention, the heat insulating lid has a simple structure and can be easily installed inside even a complicated lid body with a built-in bellows pump. At the same time, the heat insulating member prevents heat from leaking upward from the lid. Therefore, the power consumption of the electric heater when keeping the electric air pot warm is reduced. In addition, since a heat-resistant plate is provided below the insulation member, the insulation member can be heated with hot water,
It will not deteriorate or deform due to water vapor. Furthermore, since the vacuum double container is sealed with this heat insulating lid at the back of the mouth, it has the effect of improving the heat insulation performance of the vacuum double container and the heat insulating lid.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view showing a first embodiment of the heat insulating lid for an electric air pot according to the present invention, and FIG.
3, 4, and 5 are cross-sectional views of the electric air pot actually equipped with the heat-insulating lid shown in the figure, respectively. It is a schematic sectional view showing an example. DESCRIPTION OF SYMBOLS 1... Vacuum double container, 5... Heat insulating lid, 6... Heat insulating member, 7... Heat resistant plate, 12... Seal packing, 17... Step, 24... Lid body, 25... Bellows pump.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In an electric air pot with a bellows pump built into the lid of a metal vacuum double container, a pack-like heat insulating member is provided below the bellows pump, and a pack-like heat insulating member is provided below the heat insulating member. A metal vacuum, characterized in that an insulating lid is provided with a heat-resistant plate located on the outer periphery of the container and a sealing gasket is attached to the outer periphery, and the sealing gasket is in pressure contact with the container wall at the back of the mouth of the vacuum double container. Double container type electric air pot. (2) The metal vacuum double container according to claim 1, wherein the heat insulating member is an inner pack filled with a heat insulating material and housed in a synthetic resin pack. Model electric air pot. (3) The metal vacuum double container electric air pot according to claim 1, wherein the heat insulating member is a synthetic resin pack having a partitioned internal space. (4) The metal vacuum double container electric appliance according to any one of claims 1 to 3 of the utility model registration claim, characterized in that an air layer is provided between the heat insulating member of the heat insulating lid and the heat resistant plate. Air pot. (5) The metal vacuum double container type according to any one of claims 1 to 4 of the utility model registration claim, wherein the heat-resistant plate is detachably attached to a heat insulating member. Electric air pot. (6) The metal vacuum double container electric according to any one of claims 1 to 3 of the claims for utility model registration, characterized in that the heat-resistant plate is formed integrally with a heat insulating member. Air pot.