JPS636994Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bellows pump for an air pot.

Conventionally, in air pots and the like, a bellows has an intake hole at one end and an exhaust hole at the other end, and a spring that expands the bellows.
A bellows pump is used, which is comprised of an intake valve that opens and closes the intake hole, and which expands and contracts the bellows to forcefully send air from the exhaust hole into the interior of the air pot container. This type of bellows pump prevents the inside of the bellows from flowing out from the water inlet due to the pressure increase inside the container when hot water is filled and left unattended. The structure allows steam to escape to the atmosphere. For this reason, if high-temperature steam enters the bellows, the bellows will undergo thermal deformation and become unusable. It was necessary to keep the temperature below about 95℃. However, since the water heated in such electric pots is not boiling, chlorine gas etc. are not removed sufficiently. There was a problem that the taste was worse than boiled water.

The present invention has been developed in view of these problems, and aims to provide a bellows pump for air pots that can be applied to electric pots with a water boiling function, especially electric pots with a boiling function. .

The bellows pump for air pots according to the present invention differs from the bellows pump for air pots of the above-mentioned type in that one end is fixed to the intake hole side and the other end is loosely passed through the exhaust hole so that the inside of the container and the atmosphere are connected through the intake valve. A steam cylinder communicating with the exhaust hole is provided, and a valve body for opening and closing the exhaust hole is fixedly installed at the other end of the steam cylinder.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

In the figure, 1 is a bellows pump, 2 is a bellows body, 3 is a bellows top plate fixed to the bellows body 2, 4 is a spring, 5 is an intake hole formed in the bellows top plate 3, and 6 is an intake hole at the bottom of the bellows body. An exhaust hole formed coaxially with the hole 5, 7 an intake valve that opens and closes the intake hole 5, 8 a gasket forming a valve seat of the intake valve, 9 a cap that functions as a valve body for the intake valve 7, and 10 a cap. This is a spring that acts in the direction of separating 9 from the packing.

According to the present invention, a steam cylinder 1 is provided inside the bellows body 2.
1 is arranged, one end of which is fitted onto the top of the cylindrical protrusion 3a of the bellows upper plate 3 forming the intake hole 5, and the other end fitted into the cylindrical protrusion 6a forming the exhaust hole 6 of the bellows main body 2. It is being penetrated. A communication hole 3b is formed on the side of the cylindrical protrusion 3a,
The inside of the bellows is communicated with the atmosphere through the gap between the intake hole 5 and the steam cylinder 11. The communication hole 3b and the intake hole 5 are opened and closed by moving the cap 9 up and down. At the other end (lower end in the figure) of the steam cylinder 11, there is an annular valve body 1 for opening and closing the exhaust hole 6 provided in the bellows body 2.
2 is permanently installed. The valve body 12 is pressed toward the cylindrical protrusion 6a forming the exhaust hole 6 by the action of a spring 4 disposed within the bellows body 2, thereby closing the exhaust hole 6. A seal packing 13a is disposed between the valve body 12 and the cylindrical protrusion 6a. In this embodiment, the seal packing 13a
Although the inner flange of the seal packing 13 is used to seal between the bottom plate 15 of the outer lid 14 and the inner stopper 16, an independent seal packing may be provided on the valve body 12 or the cylindrical protrusion 6a. good.

When the bellows pump 1 constructed as described above is applied to an electric pot provided with a boiling function, it is disposed within the outer lid 14 like a conventional air pot. The outer lid 14 has a bottom plate 15 and a push body 17, the cylindrical protrusion 6a of the bellows body 2 is fitted into the bottom plate 15, and the cap 9 is fitted into the cylindrical protrusion 17a provided on the push body 17. has been done. A steam hole 18 is formed in the pusher body 17 for discharging steam to the atmosphere. The outer cover 14 is rotatably attached to the shoulder body 20 by a support shaft 19, or by being screwed onto the shoulder body 20 (not shown). The inner stopper 16 is connected to a water lift pipe 21, a safety valve 22 and a water injection pipe 2.
3, and the inside of the inner container 24 is communicated with the steam cylinder 11 and the exhaust hole 6 of the bellows via the ventilation path 25. 26 is a heater, 24 is an inner container, and 28 is an outer body.

When using the electric air pot with the above configuration,
First, when water is poured into the inner container 24 and electricity is applied to the heater 26, the water is heated and eventually boils. When it boils, a large amount of steam is generated, and this steam flows from the ventilation passage 25 of the inner stopper 16 to the steam cylinder 11,
It passes through the intake valve chamber 9a, passes through the gap between the cap 9 and the packing 8, and is discharged from the steam hole 18 to the atmosphere. At this time, since the valve body 12 provided at the lower end of the steam cylinder 11 closes the exhaust hole 6 by the action of the spring 4, steam does not enter the bellows body 2, and therefore, unlike the conventional bellows pump. The bellows will not be deformed due to heat.

On the other hand, when pouring, when the pusher 17 is pushed by an external force, the cap 9 first contacts the packing 8 and the intake valve 7 is closed, and when the pusher 17 is further pushed down, the valve body 12 separates from the seal packing 13. ,
At the same time that the inside of the bellows body 2 is communicated with the inside of the inner container 24, the bellows body 2 is contracted, and the air inside the bellows body 2 is forced into the inner container through the exhaust hole 6, so that hot water flows through the water pump 21 and the water injection pipe. 23 and is poured out to the outside. Next, when the external force is removed from the pusher 17, the intake valve 7 opens due to the action of the spring 10, and the atmosphere is sucked into the bellows body 2 through the intake hole 5. The state is restored, the exhaust hole 6 is also closed by the valve body 12, and the inside of the inner container 24 is again opened to the steam cylinder 1.
1. Since it communicates with the atmosphere through the intake valve chamber 9a and the steam hole 18, the problem of hot water flowing out due to an increase in the internal pressure of the inner container 24 is also solved.

As is clear from the above description, according to the present invention, it is possible to obtain a bellows pump that has a simple structure and does not undergo thermal deformation even when applied to an electric pot with a boiling function. It has the excellent effect of removing chlorine gas and other components that make water taste bad, and making it possible to obtain hot water with good taste. Moreover, in terms of structure, the conventional bellows body is only equipped with one steam pipe and a valve body that closes the exhaust hole, and the bellows operation is the same as before, and the device does not become larger. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part showing an example of an electric air pot to which a bellows pump according to the present invention is applied, and FIG. 2 is a partially enlarged sectional view thereof. 1... Bellows pump, 2... Bellows body,
3...Bellows upper plate, 4...Spring, 5...
Intake hole, 6... Exhaust hole, 7... Intake valve, 8... Gasket, 9... Cap, 9a... Intake valve chamber, 1
1... Steam cylinder, 12... Valve body, 13... Seal packing, 14... Outer cover, 15... Bottom plate, 16...
Inner stopper, 17...Press body, 20...Shoulder body, 21...Lifting pipe, 24...Inner container, 26...Heater.

Claims (1)

[Scope of utility model registration request] Consisting of a bellows having an intake hole at one end and an exhaust hole at the other end, a spring that expands the bellows, and an intake valve that opens and closes the intake hole, air is drawn from the exhaust hole by expansion and contraction of the bellows. In a bellows pump for an air pot that pumps air into the inside of a container, one end is fixed to the intake hole side, the other end is loosely passed through the exhaust hole, and the steam cylinder communicates the inside of the container with the atmosphere via the intake valve. A bellows pump for an air pot, characterized in that a valve body for opening and closing the exhaust hole is fixedly installed on the other end side of the steam cylinder.