JPS635640Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a safety device for an air pot, which uses an air pump such as a bellows or an electric pump to forcefully send air into a container containing a liquid so that the liquid inside the container is poured out. be.

In this type of air pot, air is forced into the container and the liquid in the container is poured out by, for example, pressing a bellows housed in the lid body with a pressing member or by operating an electric pump switch. However, in this case, if you accidentally press the pusher or operate the electric pump switch, hot water will be poured out, and there is a risk of getting burned by the boiling water.

The present invention was made to address the above-mentioned problems, and includes a steam passageway that communicates the inside of the container with the outside air.
This steam passage is opened and closed as a safety device, so that there is no possibility of unexpected hot water being poured out due to malfunction, and a safe and easy-to-operate air pot can be obtained.

An embodiment of the present invention will now be described with reference to Figs.

1 is a container made of stainless steel plate or the like;
A heater 2, which is housed in an insulator such as mica and seamed in a band shape with an aluminum plate, is wrapped around the outer surface of the small-diameter stepped portion at the lower end. A temperature regulator 3 is provided to control the temperature of the liquid in the container 1. The upper end of the container 1 is provided with a flange portion 4 bent outward, and a spout 6 is engaged with this flange portion 4 via a spout packing 5, and this spout 6 is connected to a steel plate covering the container 1. It is placed on the upper end of the body 7 made of

Reference numeral 8 denotes an inner lid made of synthetic resin, etc., which has ventilation holes 9 and 10 in its center, and a steam hole 11 near the outer periphery, and extends to the lower end of the container 1 to prevent pressure rise inside the container 1. A water riser pipe 12 and a discharge pipe 13, which are made of a stainless steel plate or the like and have one end open near the center of the heater 2 in the container 1, are connected to an overflow prevention valve 14 so that the liquid pressed by the container 1 rises.
This overflow prevention valve 14
and a cover 15 made of a substantially inverted conical stainless steel plate or the like that covers the inner lid 8 from below;
It is provided with an inner lid packing 16 that engages with the outer peripheral edge of the inner lid. The cover 15 has a through hole 15a near the outer periphery.
A drain hole 17 for dew condensation water is provided in the center.
Reference numeral 18 denotes a lid main body which is pivotally supported at the rear of the spout 6 so as to be freely openable and closable, and houses a bellows 19. A flange portion 23 having a plurality of notches 22 and protruding toward the center is provided at the lower end of the cylindrical portion 21, and a small cylinder 24 extending upward is provided at the center point of the circumference of the flange portion 23. A disk 25 formed by a plurality of ribs 26
It is connected to the flange portion 23 via the flange portion 23 and is integrally formed of synthetic resin.

27 is a pressing body that fits into the opening 20;
A disc portion 28 having a diameter slightly smaller than the cylindrical portion 21 of the opening 20 and a plurality of circumferential ribs 29 having a diameter slightly smaller than the inner diameter of the flange portion 23 are provided, and are loosely fitted into the notch 22 of the flange portion 23. A plurality of guide portions 30 are provided along one end of the circumferential rib 29 to protrude downward from the back surface of the disk portion 28, and are fitted into the small cylinder 24 at the center of the back surface of the upper portion 27a. A protruding cross-shaped rib 31 is integrally formed of synthetic resin or the like. A stopper 32 restricts the upward position of the pressing body 27, and is adhesively fixed to the lower end of the circumferential rib 29 via a flange portion 23.

Further, 33 is a rotation spring that urges the pressing body 27 in the rotational direction.

Reference numeral 34 denotes a check valve fitted into the opening 19a at the upper end of the bellows 19, and is urged upward by a spiral return spring 35 provided in the bellows 19 to close the cross-shaped rib 31 of the pressing body 27. is in contact with the bottom edge of.

36a is a protection plate interposed between the pressing body 27 and the bellows 19, and when the pressing body 27 and the bellows 19 are returned by the return spring 35, the pressing body 2
Check valve 3 with a certain gap between 7 and bellows 19
A gap is provided between the seal ring 34a provided in the bellows 19 and the upper end of the opening 19a of the bellows 19.

Reference numeral 36 denotes an arcuate protrusion for opening and closing the steam valve, which is fitted into the protrusion 29a of the circumferential rib 29 of the pressing body 27. Further, a steam pipe 38 housing a steam valve 37 is located below the arcuate protrusion 36, and its lower end connects to a communication pipe 40 provided via a steam packing 39 to communicate with the steam hole 11 of the inner lid 8.
The upper end, which branches off from the middle, is open outside the lid body 18. Reference numeral 41 designates an operating shaft of the steam valve 37, the upper end of which projects upward from the steam pipe 38 and is urged toward the upper arcuate protrusion 36 by a spring 42.

43 is a lock lever for locking the lid body 18;
44 is a display board, 45 is a water level gauge for displaying the water level, and 46 is a back plate fixed to the hook 47.

48 is an air valve provided below the opening 19b at the lower end of the bellows 19 and having a small hole in the center and several radial slits. 49 is the bellows 1
This is a lid packing that supports the air valve 48 at the lower end of the bellows 19 and communicates the opening 19b of the bellows 19 with the ventilation hole 10 of the inner lid 8.

In the above configuration, when discharging the hot water in the container 1, the pressing body 27 is rotated in one direction by a certain angle. In this case, the guide portion 30 of the pressing body 27 is located directly above the notch 22 of the lid body 18, and the pressing body 27
can be slid vertically. At the same time, the arcuate protrusion 36 connected to the circumferential rib 29 of the pressing body 27 pushes down the operating shaft 41 of the steam valve 37, suppressing the steam valve 37 downward and preventing communication between the communication pipe 40 and the steam pipe 38. Cut off. Pressing body 27
If you operate it downward while keeping it rotating, the air valve 48
is released by pressure from within the bellows 19,
The air inside the bellows 19 is forced into the container 1, and as mentioned above, since the steam passage is closed by the steam valve 37, the pressure inside the container 1 increases, and the temperature is maintained at a predetermined temperature by the heater 2 and the temperature controller 3. The hot water in the heated and kept warm container 1 is discharged from a discharge pipe 13 via a rising pipe 12 and an overflow prevention valve 14.

Further, when the pressure on the pressing body 27 is released, the bellows 19 is inflated to its original state by the return spring 35, and at the same time, it returns by sucking new air through the gap between the check valve 34 and the opening 19a of the bellows 19. The pressing body 27 is also lifted upward and is automatically rotated back to its original position by the rotation spring 33, so that the guide portion 30 of the pressing body 27 moves from the position of the notch 22 of the lid body 18 and closes the flange. The pressing body 27 is engaged with the portion 23 and cannot be pushed downward.

Furthermore, at the same time, the arcuate protrusion 36 also rotates, and in order to stop the pressure on the operating shaft 41 of the steam valve 37, the steam valve 37 is slid upward by the spring 42 to connect the communication pipe 40 and the steam pipe 38. container 1
The inside and outside are connected to form a steam passage.

Therefore, the steam generated from the hot water in the container 1 hardly enters into the bellows 19 due to the air valve 48 and is passed from the steam hole 11 to the steam packing 39 through the communication pipe 4.
0 steam to the outside via the pipe 38. Therefore, the internal pressure of the container 1 does not increase and the liquid is not naturally discharged from the discharge pipe 13. Further, even if the liquid in the container 1 should boil, the bellows 19 will not be damaged by steam.

In this embodiment, the downward movement of the pressing body 27 is linked with the opening and closing of the communication pipe 40 by the steam valve 37, but there is no particular need to restrict the downward movement of the pressing body 27, and the steam A similar effect can be obtained by simply controlling the opening and closing of the communication pipe 40 by the valve 37. In other words, if the steam valve 37 is open,
A communication pipe 40 and a steam pipe 38 connect the inside of the container 1 and the outside of the main body.
Even if the air in the bellows 19 is forced into the container 1 by pressing the pressing body 27, it escapes from the steam pipe 38 to the outside as described above, and the air in the bellows 19 is forced into the container 1.
Therefore, even if you press the presser body 27 by mistake, the hot water inside the container 1 will not be poured out. The liquid in the container 1 can be poured out only when the communication pipe 40 is closed.

In the above embodiment, a so-called manual air pump equipped with a bellows was used, but an electric air pot using a motor or the like can also be used. For example, the starting knob of this electric pump can be operated in two different pressing directions. It is also possible to close the steam passage in the first stage as a stepwise operation, or to link the opening and closing of the steam passage with the opening and closing of a door surrounding the button as a so-called hidden button. Furthermore, it goes without saying that if these operations are automatically reset using a spring or the like, erroneous operations can be prevented and safety can be increased.

As is clear from the above explanation, according to the present invention, a steam passage is provided that communicates the inside of the container with the outside of the container, and this steam passage is opened and closed by a steam valve as a safety device. There is no pouring, which further increases reliability, and provides an air pot that is simple to operate and highly safe.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an air pot showing an embodiment of the present invention, FIG. 2 is an enlarged sectional view of a main part of the air pot, and FIG. 3 is an exploded perspective view of the main part. 1...Container, 2...Heater, 8...Inner lid, 1
1...Steam hole, 12...Rising pipe, 13...Discharge pipe, 18...Lid body, 19...Bellows,
20...Opening part, 21...Cylindrical part, 22...Notch part, 23...Flange part, 27...Press body, 30
... Guide portion, 33 ... Rotating spring, 36 ... Arc-shaped protrusion, 37 ... Steam valve, 38 ... Steam pipe,
41... Operating axis.

Claims (1)

[Scope of utility model registration request] A container that stores a liquid, an air pump that pumps air into the container and pours out the liquid in the container, a steam passage that communicates the inside of the container with the outside of the container, and a steam valve that opens and closes this steam passage. and an operating member that opens and closes the steam valve in conjunction with the operation of the air pump, and when dispensing liquid in the container, the operating member that operates in conjunction with the operating member of the air pump operates the steam valve to release steam. block the passage,
Furthermore, after the liquid pouring operation is completed, the steam valve is returned to its original state by a return member that returns the steam valve to its original state, thereby opening the steam passage.