JPS6049490B2 - air pot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an air pot that blows pressurized air from an air pump installed in an upper lid into a container and pushes out a liquid contained in the container using its internal air pressure. It is.

Conventional configurations and their problems In general, with this type of pot, it is necessary to increase the pressure inside the container when the liquid inside the container is poured out, but on the other hand, when the liquid inside the container is not poured out, it is necessary to increase the pressure inside the container. Therefore, it is necessary to prevent the natural pressure increase due to this.

Otherwise, as the pressure inside the container increases naturally, the liquid inside the container may unexpectedly leak out from the spouting pipe, wetting the floor surface, or causing an accident such as getting burned by boiling water. For this reason, conventionally, the lid structure of this type of pot is as shown in FIG.
The upper plate 103 has an air circulation hole 104, and is connected to the outside via a gap 106 between the extrusion plate 105 and the lid 101.

However, in this conventional structure, since the inside of the bellows 1O2 is always in communication with the inside of the lid body 101, steam generated from the liquid always enters the bellows 1O2 and condenses there, causing corrosion of the spring 107. Bellows 1O
There was a problem that condensed water dripped into the container as well as reducing the life of the container.

In addition, the steam that has entered the bellows 1O2 leaks out through the gap 106 around the extrusion plate 105 through the above-mentioned path, resulting in an unsightly appearance. In addition, steam and steam can also enter the lid 101, causing condensation and water droplets to accumulate inside the lid 101, causing discomfort to the user when the lid 101 is opened and closed. It wasn't something nice. In order to solve this problem, we have proposed a configuration in which a dedicated steam passage is formed to prevent steam and steam from entering the bellows, thereby keeping the inside of the bellows pump clean at all times and dramatically extending the life of the bellows. However, this configuration does not have a buffer like conventional bellows, and the overflow prevention valve closes when the container overturns, resulting in a rapid increase in internal pressure due to the scattering of the liquid contents when the container overturns. There is a new problem in that the liquid inside the container mixes with the air and gushes out of the container from a weak part such as the backing of the inner lid, which is extremely dangerous.

Purpose of the Invention The present invention solves the above-mentioned conventional problems and provides a safe air pot that prevents air from mixing with the outside of the container and spouting out the liquid inside the container when the container topples. .

DESCRIPTION OF THE INVENTION The present invention prevents the content liquid from spewing out by establishing communication between the container and the bellows only when the container is overturned.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In Figures 2 to 5, reference numeral 1 is a bottomed cylindrical container made of stainless steel plate, etc., and the main heater is housed in an insulator such as mica and seamed with aluminum etc. on the outer periphery of the bottom. 2. The auxiliary heater 3 is integrally attached to form a band heater.

In addition, in the bottom recess of the container 1, there are a first temperature regulator 4 that controls the energization of the main heater 2, and a second temperature regulator 4 that controls the auxiliary heater.
A safety device 5 is closely held, which includes a temperature regulator 5a and an overtemperature rise prevention device 5b that cuts off power to the main heater 2 and auxiliary heater 3 when the temperature rises abnormally.

The upper end of the container 1 integrally has a flange portion 1a extending in the outer circumferential direction, and a spout backing 6 is attached to this flange portion 1a.
A spout 7 is provided through the spout 7 and placed on the body 8.

Reference numeral 9 denotes an inner lid that is detachably placed on the opening of the container 1, and has a steam chamber 9c approximately in the center that connects the air hole 9a and the steam hole 9b.

Further, around the front of the air hole 9a, there is a communication hole 9d that communicates with the inside of the container 1, and further in front of the communication hole 9d, there is a valve chamber 11 having a built-in overflow prevention valve 10.

The container 1 is then fixed to a support frame 12 made of a stainless steel plate or the like with screws or the like via an inner lid backing 13, and a container backing 14 provided around the support frame 12 holds the container 1.
is attached airtight to the Reference numeral 15 denotes a water raising vibrator that extends from the valve chamber 11 to the bottom of the container 1, and its lower end is positioned and opened in the bottom recess of the container 1, and its upper end extends outside of the container 1 and is opened. It is connected by a valve chamber 11 to a spouting vibrator 16 having a spout 16a opening downward at its tip.

Numeral 17 is a ball valve that closes the steam hole 9b when the vessel is overturned, and prevents the contents from leaking to the outside.

Reference numeral 18 denotes a lid pivotally mounted at the rear of the spout 7, and a cylindrical part 18a with an open top is provided in the upper center of the lid, and a push plate 19 that is vertically slidable is provided in the cylindrical part 18a. Prepare,
This push plate 19 is provided, and the bellows 20 is compressed against a spiral spring 21 built in the bellows 20 housed under the push plate 19.

The bellows 20 is integrally provided with the lid cover 22 of the lid body 18 by welding the entire circumference, etc., and a check valve 2 is installed on the upper part of the bellows 20.
3 is connected to the upper end opening 20 of the bellows 20 by the spiral spring 21.
a, and is arranged with a certain gap secured therebetween, and is provided with an air ejection hole 22a at the lower part. The check valve 23 is provided with an operating rod 25 that is biased downward by a compression spring 24 and projects from the air jet hole 22a. In addition, the operating rod 25 is the bellows 2.
When a compression operation of 0 is performed, the operation stroke can be absorbed by the compression spring 24. 26 is a switching valve provided at the lower end of the operating rod 25, and in the normal state, the air jet hole 22a is
When the push plate 19 is compressed, the air hole 9a is closed by the valve seat 26b, and the inside of the bellows 20 and the inside of the container 1 are communicated through the communication hole 9d.

27 is a seal backing of the check valve 22, 28 is a mounting cover for the compression spring 24 and the seal backing 27, 29 is a protection plate for the bellows 20, 30 is a lever for regulating the pressure of the push plate 19, and 31 is a valve that opens and closes on the main body by a pivot 32. Lid body 1
Lock knob for locking and unlocking 8, 3
Reference numeral 3 denotes a lid backing that communicates the air jet hole 22a of the bellows 20, the air hole 9a of the inner lid 9, and the communication hole 9d when the lid body 18 is locked to the main body.

Reference numeral 34 denotes an exhaust passage that communicates the steam hole 9b of the inner lid 9 with the exhaust hole 18b of the lid body 18, and is shielded by a passage packing 35.

36 is a water level gauge of the container 1, and 37 is a base.

Reference numeral 38 denotes a dew tray that receives dew water dripping onto the floor surface when the lid body 18 is opened. In the above configuration, when water is stored in the container 1, the inner lid 9 is inserted, the lid body 18 is attached (the state shown in FIG. 2), and the heaters 2 and 3 are energized, the generated heat causes The water in container 1 is heated.

As the water boils, steam is generated, and this steam is released into the communication hole 9d1 provided in the inner lid 9, the air hole 9a1, and the steam chamber 9.
c through the steam hole 9b1 and the exhaust passage 34 to the exhaust hole 18b.
is released outside the vessel. Therefore, an accident in which steam is accumulated in the container 1 and the content liquid spontaneously flows out from the spout 16a is prevented.

Furthermore, since the switching valve 26 opens the air hole 9a and closes the air jet hole 22a at the same time, it prevents steam rising from the container 1 from flowing into the bellows 20, and also prevents steam rising from the container 1 from flowing into the bellows 20. In this case, it is also possible to prevent water in the container 1 from flowing into the bellows. Therefore, steam condenses in the bellows 20, which flows back into the container 1, or by steam or liquid? rose 2
There is no possibility that the springs inside the air pot will corrode, and the air pot can be used in an extremely hygienic manner.

When operating the bellows 20 to drain the liquid in the container 1, push down the push plate 19 as shown in FIG. The operating rod 25 is lowered via the compression spring 24, and the switching valve 26, which had been blocking the air injection hole 22a, opens the air injection hole 22a and closes the air hole 9a of the inner lid 9. The air discharged when the pump is pressed down after the air hole 9a is closed acts to increase the pressure inside the container 1, and pushes the hot water in the container 1 out of the container through the water riser pump 15 and out of the spout 16a. . You can pump out the required amount of hot water by repeating this action. When the container overturns, the overflow prevention valve 10 and the ball valve 17 act to seal the airtight state, so that the outer sealing surface of the thin-walled skirt portion 26a of the switching valve 26 prevents a sudden increase in internal pressure, as shown in FIG. As a result, the air is pushed into the inner surface of the lid cover 22 through the air outlet 22a, and the container 1 and the bellows 2 are
0 is in a continuous state.

For this reason, conventionally, steam and hot water scattered outside are removed by the bellows 2.
0 and will not cause burns or stain the floor. In addition, since it is reset to its original state by pressing the push plate 19, it has extremely good operability and high reliability.

Effects of the Invention As described above, according to the present invention, natural pressure rise is prevented and steam intrusion into the bellows is prevented by mechanically and forcibly opening and closing the air outlet on the bellows side and the air hole on the inner lid side using a switching valve. Because it is made of solid wood, its operation is reliable and the pouring operation can be performed smoothly.

In addition, to solve the problem of the above-mentioned structure, which was a problem with hot water scattering when the vessel falls over, the switching valve is forcibly opened to the inside of the bellows when the internal pressure is high, and the steam and hot water are stored inside the bellows. It is safe as there is no splashing. Further, the present invention has been particularly effective as a steam passage structure in a boiling type air pot, and its effects are extremely large.

[Brief explanation of the drawing]

Fig. 1 is a partial sectional view of a conventional air pot, Fig. 2 is a partially cutaway front view of an air pot showing an embodiment of the present invention in a normal state, and Fig. 3 is a dispensing operation of the air pot. Fig. 4 is a perspective view showing the switching/valve operation during the dispensing operation of the air pot, and Fig. 5 shows the operation of the switching valve when the air pot falls over. FIG. 1... Container, 9a... Air hole, 9d.
...Communication hole, 20...Bellows, 22a...
...Air outlet, 25...Operation rod, 26...
...Switching valve, 26a...Skirt portion, 26
b... Valve seat.

Claims (1)

[Claims] 1. Air discharged from a bellows installed in the lid body is blown into the container through a lid packing that communicates between the bellows and the inner lid, and a communication hole in the inner lid, so that the liquid in the container is poured out to the outside. A switching valve is provided in front of the air outlet at the lower end of the bellows that communicates with the inner lid, and the switching valve operates in conjunction with a push plate.When the bellows is inflated, the switching valve normally closes the air outlet, and when the container falls over, the internal pressure is reduced. An air pot having a steam passage structure that is forcibly opened to the inside of the bellows and communicates between the container and the bellows.