JPH0152007B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an air pot that boils a liquid contained in a tank with a heater to make hot water and pours out the hot water as appropriate through an air pump.

[Technical background of the invention and its problems]

In this type of air pot, for example, a push body is provided as an operating member for the air pump, and by pressing the push body, air is forced from the air pump into the tank, and this air pressurizes the hot water in the tank. It is designed to be poured out from the spout.

However, in the past, people accidentally touched the pusher lightly with their hands, lightly touched the pusher to remove dust etc. attached to the pusher, or carried the air pot and placed it on a table etc. Even if the force is applied to the pusher due to the impact when pouring boiling water, even if there is no intention to pour out hot water,
Air was forced into the tank from the air pump, and hot water was inadvertently poured out of the spout, creating a risk of accidental burns from the hot water.

[Purpose of the invention]

This invention was made with attention to these points, and its purpose is to prevent hot water from pouring out inadvertently unless the operating member of the air pump is operated to a predetermined state. Our goal is to provide safe air pockets.

[Summary of the invention]

In order to achieve this purpose, this invention
a tank that accommodates a liquid, an air pump that pumps air into the tank to pour out the liquid, and a steam escape path that communicates the inside of the tank with the outside of the tank;
An on-off valve that opens and closes an inlet for steam inflow of the steam escape path, an operating member that presses the air pump, and an operating member that moves the on-off valve in conjunction with the operating member, A certain distance is provided between the air pump and the operating member, and between the inlet and the on-off valve, so that in response to a pressing operation on the operating member, the operating member moves by the distance, thereby discharging the air. The air pump is operated by contacting the pump, and the opening/closing valve moves through the distance and contacts the inlet to close the inlet, and this blockage causes the air in the air pump to drain. The liquid flows into the tank, and the opening/closing valve is returned to its original state by a return member in response to release of the pressing operation on the operation member.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes a cylindrical case, and an end plate 2 is attached to the upper opening of the case 1. A cylindrical tank 3 with a bottom is housed inside the case 1, and the opening periphery of the upper end of the tank 3 is supported by the lower surface of the end plate 2 via a pushing member 4. A water inlet 5 is formed in the end plate 2, and an inner plug 7 is removably attached to the water inlet 5 through a packing 6. By removing the inner plug 7, water is poured from the water inlet 5 into the tank 3. It is now possible to inject A heater 8 and a heat-retaining heater 9, which are controlled through a detection thermostat (not shown), are provided around the lower end of the tank 3, and the heater 8 boils the water in the tank 3 until it boils. Later, the hot water is kept warm by a heat-retaining heater 9. A steam escape passage 10 is formed inside the inner stopper 7, and this steam escape passage 10 has an inlet 11 at one end and an outlet 12 at the other end.
have. The inlet 11 is connected to the tank 3 through a flow path 13 formed at one end of the inner plug 7.
It communicates within. Further, a cylindrical packing 14 is attached to the upper surface of the inner stopper 7 so as to surround the outer circumferential side of the inflow port 11.

An inverted bowl-shaped upper lid 15 is provided on the upper side of the inner stopper 7, and one end of the upper lid 15 is rotatably supported on the end plate 2 via a pin 16. A substrate 17 is provided on the lower surface of this upper lid 15, and this substrate 1
7 is in contact with the packing 14 such that it can freely approach and separate. A movable plate 18 is provided above the base plate 17, and a telescopic bellows 19 constituting an air pump is provided between the movable plate 18 and the base plate 17. A circular recess 2 is provided at the upper end of the upper lid 15.
0 is formed, and an inverted bottomed cylindrical pusher body 21 is fitted into this recess 20 as an operating member so as to be vertically movable. A sliding hole 22 is formed in the center of the bottom surface of the recess 20, and a cylindrical closing body 23 is slidably inserted into the sliding hole 22. This closing body 23 has an upper end fixed to the inner top surface of the pushing body 21 via a screw 24, and has a closing part 25 at its lower end projecting like a brim around its outer periphery. A through hole 26 is formed in the center of the movable plate 18, and a flat annular packing 27 is attached to the inner peripheral edge of the through hole 26, and the closing portion 25 faces the packing 27 with a distance of l ₁ . are doing. A rod-shaped opening/closing body 29 is inserted as an operating member into the through hole 26 through a gap 28, and the lower end of this opening/closing body 29 slidably penetrates the substrate 17, and a packing 3 is attached to the tip surface of the opening/closing body 29.
A circular on-off valve 31 covered with 0 is installed, and this on-off valve 31 is connected to the inlet 11 of the steam relief passage 10 _.
〓They are facing each other with a gap between them. A plurality of vent holes 32 are formed in the substrate 17 facing the on-off valves 31, and these vent holes 32 are hermetically closed by the packing 30 of the on-off valves 31.
The upper end of the opening/closing body 29 faces into the closing body 23 , and a first spring 33 is provided between the upper end surface of the opening/closing body 29 and the inner top surface of the closing body 23 .
A second spring 34 is wound around the outer periphery of the opening/closing body 29, and the elastic force of the second spring 34 overcomes the elastic force of the first spring 33, thereby elastically urging the opening/closing body 29 upward. ing. Further, a third spring 35 is wound around the outer periphery of the closing body 23, and the pushing body 21 is elastically urged upward by this third spring 35, and this urging force causes the closing portion 25 of the closing body 23 to is in contact with the edge of the sliding hole 22. Furthermore, a fourth spring 36 is provided within the bellows 19, and this fourth spring 3
6 elastically urges the movable plate 18 upward, and the upper surface of the movable plate 18 comes into contact with an annular protrusion 20a protruding from the lower surface of the bottom of the recess 20 due to the urging force.

A guide cylinder 37 is integrally formed at one end of the substrate 17, and the upper end of the guide cylinder 37 penetrates the wall surface of the upper lid 15 and projects to the outside, and a plurality of steam holes 38 are bored in the projecting end surface. . Guide tube 37
A flat annular packing 39 is attached to the opening edge at the lower end of the steam release path 10.
It is in contact with a flat annular packing 40 attached to the inner peripheral edge of the outlet 12 so as to be able to move toward and away from the outlet. A protrusion 41 is provided on the other end side of the end plate 2 and the upper lid 15, respectively.
42 are formed, these protruding parts 41 and 42 overlap each other so as to be able to approach and separate, and a molten metal guide path 43 is formed inside the protruding part 41 of the end plate 2. This hot water channel 43
is the spout 4 formed on the lower surface of the tip side of the protrusion 41.
4 is open to the outside, and a molten metal guide pipe 46 is connected to the proximal end of the molten water guide path 43 via a check valve 45 . This hot water supply pipe 46 is inserted vertically into the tank 3, and the opening at the lower end of the pipe 46 is inserted vertically into the tank 3.
It faces near the inner bottom surface of. In addition, 47 is the upper lid 1
5 is a locking mechanism that locks the end plate 2, and 48 is a lever for releasing the locking mechanism. Further, 49 is a liquid level gauge that displays the liquid level in the tank 3, and 50 is a viewing window thereof.

In the air pot configured in this way, the steam generated in the tank 3 passes through the flow passage 13, the inlet 11, the steam relief passage 10, the outlet 12, and the guide tube 37 in order, and is released from the steam holes 38 to the outside of the air pot. It is discharged.

When the pushing body 21 is pressed downward in this state, the first spring 33 is compressed, and this compression causes the opening/closing body 29 to move downward, and when the opening/closing body 29 has moved beyond a certain level, the opening/closing valve 31 collides with the inlet 11 via the packing 30, thereby closing the steam escape path 10 and opening the vent holes 32. Further, as the pushing body 21 descends, the closing part 25 of the closing body 23 collides with the packing 27 of the through hole 26, and the inside of the bellows 19 is sealed, and the movable plate 18 is pressed downward.
This compresses the bellows 19 and the air inside it. The compressed air then flows through the ventilation hole 32...
The hot water is then fed into the tank 3 through the flow path 13, and the liquid level of the hot water is pressurized. Due to this pressurization, a part of the hot water in the tank 3 is transferred to the hot water pipe 46 and the hot water pipe 43.
The liquid is then poured out from the spout 44 to the outside. After that, when the pressing body 21 is released, the pressing body 21 is raised by the elastic force of the third spring 35, and accordingly, the opening/closing body 29 is raised by the elastic force of the second spring 34, and the closing part 25 is raised by the elastic force of the second spring 34. is separated from the packing 27, external air flows into the bellows 19 through the through hole 26, and as this air flows in, the movable plate 18 rises due to the elastic force of the fourth spring 36.
The bellows 19 is restored to its original state. By repeating such operations, the hot water in the tank 3 can be taken out in appropriate amounts.

The inside of the tank 3 communicates with the outside through the steam relief path 10, but when the bellows 19 causes a compression operation, the steam relief path 10 is closed by the on-off valve 31 of the opening/closing body 29, and the inside of the tank 3 is communicated with the outside. Since the communication state is cut off, the compressed air in the bellows 19 can be reliably introduced into the tank 3 without leaking to the outside.

After the hot water pouring operation is completed, the on-off valve 31 is moved to the on-off body 29 by the elastic force of the second spring 34.
The steam escape path 10 is opened by rising integrally with the inflow port 11 and being separated from the inflow port 11 and maintained in its original state. By opening the steam escape passage 10 in this way, the steam in the tank 3 is released into the bellows 19.
There is an advantage that the steam is discharged to the outside through a separate steam escape passage 10 without passing through the interior of the steam, so that the bellows 19 is not deteriorated by the heat of the steam.

By the way, in such an air pot,
The bellows 19 is compressed for the first time when the pushing body 21 is pressed until the gap ₁ minute is filled, and then the bellows 19 is compressed between the on-off valve 31 and the inlet 11.
After the on-off valve 31 is moved so as to fill the space _l2 , the air in the bellows 19 flows into the tank 3 and hot water is poured out. That is, the two-stage gaps l ₁ and l ₂ constitute a so-called buffering stroke width from the operation of the pusher 21 until the hot water is actually poured out.

Therefore, if you accidentally touch the pusher 21 lightly with your hand, if you touch the pusher 21 lightly with your hand in an attempt to remove dust attached to the pusher 21, or if you carry the pot and place it on a table etc. Even if force is applied to the pusher body 21 due to an impact and the pusher body 21 moves slightly downward, this movement will be sufficiently absorbed within the buffering stroke width, thus preventing the careless pouring of hot water. This will surely prevent the problem from occurring.

〔Effect of the invention〕

As explained above, according to the present invention, even if the operation member for the air pump is operated by mistake, hot water will not be inadvertently poured out from the spout, and therefore, there will be no risk of burns. This has the effect of avoiding danger and allowing safe handling.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of an embodiment of the present invention before operation, and FIG. 2 is a cross-sectional view of the main parts during operation. 3...tank, 10...steam release path, 19...bellows (air pump), 21...push body (operation member), 2
9... Opening/closing body (operating member), 31... Opening/closing valve, 34...
Spring (returning member) between l ₁ , l ₂ …〓.

Claims (1)

[Claims] 1. A tank that stores liquid, and an air pump that pumps air into the tank to pour out the liquid.
A steam relief path that communicates the inside of the tank with the outside of the tank, an on-off valve that opens and closes the inlet for steam inflow of the steam relief path, an operating member that presses the air pump, and an operating member that operates in conjunction with the operating member. and an actuating member that moves the on-off valve, and a certain distance is provided between the air pump and the operating member and between the sulfur inlet and the on-off valve, and in response to a pressing operation on the operating member. The air pump is operated by moving the operating member through the distance and contacting the air pump, and the on-off valve moves through the distance and comes into contact with the inlet to stop the flow. An air pot characterized in that the inlet is blocked, air in the air pump flows into the tank due to the blockage, and the on-off valve is returned to its original state by a return member in response to release of the pressing operation on the operating member. .