JPH0576452A - Water-boiling pot - Google Patents

Abstract

PURPOSE:To prevent the unexpected outflow of hot water, so that it will not flow out unless a pressing body is operated to a predetermined state, by providing an on-off valve for opening and closing an escape way of steam and by providing a working member for bringing the on-off valve into an opening and closing action while interlocking with the pressing body. CONSTITUTION:When a pressing body 21 is pressed below, a spring 33 is compressed and an open-close body 29 moves; and at the point of time when the open-close body 29 moves to a certain distance or more, the open-close valve 31 abuts on an inflow port 11 via packing 30 so that an escape way 10 of steam is closed while a vent hole 32 is opened. Because the closing part 25 of a closing body 23 abuts on the packing 27 of a through hole 26 as the pressing body 21 descends, the inside of a bellows 19 is sealed and a movable plate 18 is pressed downward so that the bellows 19 and its internal air are compressed. Compressed air enters a tank 3 via the vent hole 32 and a part of hot water goes out of a bung hole 44. When a light touch with the hand is given by mistake to the pressing body 21, the pressing body 21 moves slightly downward but the open-close valve 31 does not come into contact with the inflow port 11 and the inflow port is in the open state because the open-close valve 31 is separated from the inflow port 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boiling pot for boiling a liquid contained in a tank with a heater to produce hot water, and pouring the hot water appropriately through a bellows.

[0002]

2. Description of the Related Art In a general pot, water is stored in a tank, heated to a temperature of about 90 to 95 ° C. through a heater, and then heated by a heat retaining heater of about 30 to 50 W. It is normal to keep it warm, but in hot water for tea strainers, it is said that it is preferable to boil it once and let it cool down to around 70 ° C in terms of flavor,
For this reason, there is provided a boiling-type boiling pot in which hot water is once boiled in the tank.

In this kind of water heating pot, a tank is housed in a case, an opening at the upper end of the tank is covered with a screw-in type upper lid, and a steam escape path for communicating the inside of the tank with the atmosphere is formed. Hot water is boiled and boiled in the tank, and the steam is escaped through a steam escape passage.

The upper lid is provided with a bellows for pressurizing hot water in the tank and a pusher for operating the bellows. By pushing the pusher, air is blown from the bellows into the tank. It is possible to pressurize the hot water in the tank with this air, and to discharge the hot water from the pouring outlet.

[0005]

However, in the prior art, since the upper lid is provided in a screw-in type, when foreign matter adheres to the vapor escape passage or is clogged with foreign matter.
Alternatively, if a detection thermostat that detects the temperature of water in the tank and connects or disconnects electricity to the heater causes a failure such as a short circuit, steam inside the tank will cause an abnormally high pressure and the tank will explode, causing an unexpected May pose the risk of

[0006] Further, the pressing body is accidentally lightly touched, or the pressing body is lightly touched to remove dust or the like adhering to the pressing body, or the pot is carried and placed on a table or the like. Even if the pressing body is exerted with force due to the impact, that is, even if you do not intend to pour hot water,
Air is pumped into the tank from the bellows and hot water is inadvertently poured from the pouring outlet, which may cause an unexpected burn.

The present invention has been made by paying attention to such a point, and an object thereof is to provide a tank even if the steam escape passage is clogged or the detection thermostat fails. It is an object of the present invention to provide a safe water heating pot that does not cause a risk of bursting and does not inadvertently pour hot water unless the pusher is operated to a predetermined state.

[0008]

In order to achieve such an object, the present invention has an upper lid of a case accommodating a tank for storing hot water, and an upper lid of a rotatable structure which pivots about one end as a fulcrum. A bellows for pressurizing the hot water in the tank is housed in the upper lid, and a pusher for operating the bellows is provided to allow the steam in the tank to pass through a steam escape passage that does not pass through the bellows. A steam hole to be discharged to the outside of the pot is provided at a fixed position away from the pusher body to the outer peripheral side thereof and in the vicinity of the rotation fulcrum position of the upper lid, and an opening / closing valve for opening and closing the steam escape passage is provided. An operating member that opens and closes the on-off valve in conjunction with the body is provided, and when pouring hot water in the tank, the on-off valve is operated by the operating member that interlocks with the pusher to close the steam escape passage, After the pouring operation of Are those by the return member for returning the shutoff valve to return the shutoff valve to its original state and to open the steam relief path.

[0009]

When the steam escape passage is clogged and blocked due to foreign matter adhering to the steam escape passage, the pressure in the tank is increased by the steam when the hot water boils. However, the upper lid placed in the opening of the tank is supported by a rotatable structure, that is, it is not a screw-in type, and therefore the steam in the tank passes through a slight gap on the lower surface side of the upper lid as the pressure in the tank increases. The risk of spillage to the outside and thus of tank rupture can be avoided.

Further, when a detection thermostat for detecting the temperature of water in the tank to cut off electricity to the heating heater causes a failure such as a short circuit, boiling of the hot water is continued while the heating heater is still energized. However, the pressure in the tank is increased by the steam, but in such a case as well, the steam can be released to prevent the tank from bursting.

To obtain the hot water in the tank, the user first faces the front of the pot and puts his or her hand above the pot and attaches it to the upper part of the pusher, and pushes the pusher downward with this hand. , In this way, the hot water in the tank is made to flow out from the spout, but here the steam hole for discharging the steam in the tank is placed near the turning fulcrum position of the upper lid that is far from the pressing body. Therefore, the steam flowing out from the steam hole does not touch the hand of operating the pusher,
Therefore, there is no risk of burns and the pot can be handled safely. Especially when the pusher is operated with the tip of the finger touching the upper surface of the pusher randomly and the tip of the hand (fingertip) protrudes from the upper surface of the pusher to the rear side of the pot, the steam hole is pushed. Since it is away from the body, the steam flowing out from the steam holes does not touch the hands, and the risk of burn injury is surely prevented.

On the other hand, in a normal state, the on-off valve that opens and closes the steam escape passage is held in a state of being separated from the steam escape passage by the return member, and the on-off valve is opened when the pusher is pressed with a sufficient width. The steam escape path is blocked by moving sufficiently against the return member, and pouring of hot water is achieved by this, but here the pressing body is accidentally lightly touched or dust attached to the pressing body. Similarly, if you try to remove it by touching it lightly, or if the force is applied to the pusher by the impact of carrying the pot and placing it on a table, push the pusher slightly downward. The moving valve does not block the steam escape passage by the on-off valve, and therefore the hot water in the tank is not pressurized by air, so that hot water may be inadvertently poured from the spout. There is no such thing.

[0013]

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

In the figure, reference numeral 1 designates a cylindrical case.
The end plate 2 is attached to the upper end opening of the. A bottomed cylindrical tank 3 is housed inside the case 1, and the opening edge of the upper end of the tank 3 is supported on the lower surface of the end plate 2 via a pressing member 4. A water injection port 5 is formed in the end plate 2, and an inner plug 7 is detachably attached to the water injection port 5 via a packing 6. By removing the inner plug 7, water is injected from the water injection port 5 into the tank 3. Can be injected. A heating heater 8 and a heat-retaining heater 9 controlled through a detection thermostat (not shown) are provided on the outer periphery of the lower end of the tank 3, and the water in the tank 3 is boiled by the heating heater 8 until it boils. After that, the hot water is kept warm by the warming heater 9.

A steam escape passage 10 is formed inside the inner plug 7, and the steam escape passage 10 has an inflow port 11 at one end and an outflow port 12 at the other end. The inflow port 11 communicates with the inside of the tank 3 through a flow passage 13 formed at one end of the inner plug 7. In addition, the inflow port 11 is provided on the upper surface of the inner plug 7.
A cylindrical packing 14 is attached so as to surround the outer peripheral side.

A reverse bowl-shaped upper lid 15 is provided on the upper surface side of the inner plug 7, and one end of the upper lid 15 is rotatably supported by the end plate 2 via a pin 16. A substrate 17 is provided on the lower surface of the upper lid 15, and the substrate 17 is in contact with and separated from the packing 14. A movable plate 18 is provided above the substrate 17, and the movable plate 18 and the substrate 17
An expandable bellows 19 is provided between and.

A circular recess 20 is formed in the upper end portion of the upper lid 15, and an inverted-bottomed cylindrical pressing body 21 is vertically movably fitted in the recess 20. A sliding hole 22 is formed in the center of the bottom surface of the recess 20, and a tubular closing body 23 is slidably fitted in the sliding hole 22. The closing body 23 has an upper end fixed to the inner top surface of the pressing body 21 via a screw 24, and has a closing portion 25 at the lower end that projects like a collar on the outer circumference.

A through hole 26 is formed in the center of the movable plate 18, and a flat annular packing 27 is formed on the inner peripheral edge of the through hole 26.
Is attached, and the closing portion 25 is spaced apart and faces the packing 27. A rod-shaped opening / closing body 29 as an operating member is inserted into the through hole 26 through a gap 28. The lower end of the opening / closing body 29 slidably penetrates the substrate 17 and a packing 30 is provided on the penetrating front end surface thereof. A covered circular on-off valve 31 is attached, and the on-off valve 31 faces the inflow port 11 of the steam escape passage 10 at a distance.

A plurality of vent holes 32 are formed in the substrate 17 so as to face the on-off valve 31, and the vent holes 32.
Is hermetically closed by the packing 30 of the on-off valve 31. An upper end of the opening / closing body 29 faces the closing body 23, a first spring 33 is provided between an upper end surface of the opening / closing body 29 and an inner top surface of the closing body 23, and a second spring 33 is provided on an outer periphery of the opening / closing body 29. The spring 34 is wound and the elastic force of the second spring 34 overcomes the elastic force of the first spring 33, whereby the opening / closing body 29 is elastically biased upward. Further, a third spring 35 is wound around the outer periphery of the closing body 23, and the pressing body 21 is elastically biased upward by the third spring 35, and the closing portion 25 of the closing body 23 is biased by this biasing force. Touches the edge of the sliding hole 22. Further, a fourth spring 36 is provided in the bellows 19, and the movable plate 18 is elastically urged upward by the fourth spring 36, and the urging force causes the upper surface of the movable plate 18 to reach the bottom of the recess 20. Ring-shaped ridge 2 protruding from the bottom surface
It is in contact with 0a.

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 the projecting end surface moves away from the pressing body 21 to the outer peripheral side thereof. Further, it is arranged in the vicinity of the pin 16, that is, in the vicinity of the rotation fulcrum position of the upper lid 15, and a plurality of steam holes 38 ...

A flat annular packing 39 is mounted on the opening edge at the lower end of the guide cylinder 37, and the packing 39 can be brought into contact with and separated from a flat annular packing 40 mounted on the inner peripheral edge of the outlet 12 of the steam escape passage 10. Touches.

Protruding portions 41 and 42 are formed on the other end sides of the end plate 2 and the upper lid 15, respectively.
2 are superposed so that they can come into contact with and separate from each other, and a molten metal guiding passage 43 is formed inside the protruding portion 41 of the end plate 2. The molten metal guiding path 43 is opened to the outside through a spout 44 formed on the lower surface of the protruding portion 41 on the tip side, and a molten metal guiding tube 46 is connected to the substrate side end of the molten metal guiding path 43 via a check valve 45. It is connected. The molten metal pipe 46 is vertically inserted into the tank 3, and the opening at the lower end thereof faces the vicinity of the inner bottom surface of the tank 3.

Reference numeral 47 is a locking mechanism for locking the upper lid 15 to the end plate 2, and reference numeral 48 is a lever for releasing the locking.
Further, 49 is a liquid level indicator for displaying the liquid level in the tank 3, and 5
0 is the viewing window.

In the boiling pot constructed as described above, the steam generated in the tank 3 sequentially passes through the flow passage 13, the flow inlet 11, the steam escape passage 10, the flow outlet 12, and the guide cylinder 37, and then from the steam holes 38. It is discharged to the outside of the pot.

When the pusher 21 is pushed downward in this state, the first spring 33 is compressed, and the compression causes the opening / closing body 29 to move downward.
When the valve moves more than a certain amount, the on-off valve 31 is packed 30
It collides with the inflow port 11 through the flow path, and thereby the steam escape path 1
0 is closed and the ventilation holes 32 ... Are opened.

As the pushing body 21 descends, the closing portion 25 of the closing body 23 collides with the packing 27 of the through hole 26, the inside of the bellows 19 is sealed, and the movable plate 18 is pressed downward. As a result, the bellows 19 and the air inside thereof are compressed. Then, the compressed air passes through the vent 32
, And the flow passage 13 are introduced into the tank 3, and the liquid surface of the hot water is pressurized. By this pressurization, a part of the hot water in the tank 3 is poured out to the outside from the pouring port 44 through the pipe guiding pipe 46 and the pipe guiding passage 43.

After that, when the pressing force of the pressing body 21 is released, the pressing body 21 is raised by the elastic force of the third spring 35, and the opening / closing body 29 is raised by the elastic force of the second spring 34 accordingly. The closing portion 25 is separated from the packing 27, external air flows into the bellows 19 through the through hole 26, and as the air flows in, the movable plate 18 rises due to the elastic force of the fourth spring 36, and the bellows 19 is Restore the original state. By repeating such an operation, it is possible to take out an appropriate amount of hot water in the tank 3.

Although the inside of the tank 3 communicates with the outside through the steam escape passage 10, when the bellows 19 performs the compression operation,
The opening / closing valve 31 of the opening / closing body 29 closes the vapor escape passage 10 and interrupts the communication state between the inside of the tank 3 and the outside. Therefore, the compressed air in the bellows 19 is reliably introduced into the tank 3 without leaking to the outside. Can be made

After the pouring operation of the hot water is completed, the second
The elastic force of the spring 34 causes the on-off valve 31 to rise integrally with the on-off body 29, separate from the inflow port 11 and be held in the original returning state, and the steam escape passage 10 is opened. By opening the steam escape passage 10 in this way, the steam in the tank 3 is discharged to the outside through the separate steam escape passage 10 without passing through the inside of the bellows 19, so that the bellows 19 is heated by the heat of the steam. There is no fear of deterioration.

When foreign matter adheres to the steam escape passage 10 and the steam escape passage 10 is clogged and closed, the pressure in the tank 3 is increased by the steam when the hot water boils.
However, the upper lid 15 arranged in the opening of the tank 3 is rotatably supported by the pin 16.
In other words, although it is not of a screw-in type, and although the upper lid 15 is hooked by the hooking mechanism 47, there is a slight play in the hooking state, so that the inside of the tank 3 increases as the pressure inside the tank 3 increases. The stopper 7 and the upper lid 15 are slightly displaced upward, and the steam in the tank 3 flows out through the gap between the water injection port 5 and the inner stopper 7 and the gap between the inner stopper 7 and the upper lid 15, and thus the tank 3 You can avoid the danger of bursting.

Further, when the detection thermostat for detecting the water temperature in the tank 3 to cut off electricity to the heater 8 causes a failure such as a short circuit, the heater 8 remains hot. Although the boiling continues, the pressure inside the tank 3 is increased by the steam. In such a case, the steam can be released to prevent the tank 3 from bursting.

To obtain the hot water in the tank 3, the user first places a container such as a cup facing the front of the pot below the spout 44, and in this state, from the front side of the pot to the upper side of the pot. To the upper part of the push body 21, and push the push body 21 downward with this hand, and the hot water in the tank 3 is caused to flow out from the spout 44 by this operation, and the hot water is stored in the container. I will receive it, but here tank 3
The steam holes 38 for discharging the steam inside are arranged in the vicinity of the rotation fulcrum position of the upper lid 15 which is away from the pressing body 21,
For this reason, the steam flowing out from the steam holes 38 does not come into contact with the hand of manipulating the pusher 21, so that there is no risk of burns and the pot can be handled safely. In particular, even if the operator pushes the hand on the upper surface of the pressing body 21 randomly and operates the pressing body 21 in such a state that the tip (fingertip) of the hand protrudes from the upper surface of the pressing body 21 to the back side of the pot, Since the holes 38 ... Are distant from the pressing body 21, the steam flowing out from the steam holes 38 ... Does not come into contact with the hand and there is an advantage that the risk of burns can be surely prevented.

On the other hand, the pushing body 21 is lightly touched by mistake, the hand is touched similarly to remove dust and the like adhering to the pushing body 21, or the pot is carried and placed on a table or the like. When a force is applied to the pressing body 21 due to the impact when the pressing body 21 is moved, the pressing body 21 moves slightly downward, but the on-off valve 31 is normally operated by the opening / closing valve 31.
The opening / closing valve 31 does not come into contact with the inflow port 11 even if the pusher 21 slightly moves, and the inflow port 11 is held in the open state since ..

Therefore, even if the bellows 19 is compressed by a slight movement of the pressing body 21 and the internal air flows out from the ventilation holes 32, the air flows from the inflow port 11 through the steam escape passage 10 into the steam holes 38. There is no possibility that the hot water in the tank 3 is pressurized to the atmosphere, and therefore the hot water in the tank 3 is inadvertently poured from the spout 44 to cause burns. ..

[0035]

As described above, according to the present invention,
If foreign matter adheres to the steam escape passage, it may become clogged,
Alternatively, even if the detection thermostat fails, it does not pose a risk of the tank exploding, and the steam in the tank passes through the steam escape passage that does not pass through the bellows, and the steam is released from the steam hole. Since it is made to flow out to the outside, thermal deterioration of the bellows can be prevented and its durability can be improved, and the steam holes are arranged near the rotation fulcrum position of the upper lid away from the pressing body. Therefore, when operating the pusher with your fingers, there is no danger of steam coming into contact with the fingers and injuring yourself.Also, if you press the pusher by mistake, pouring hot water carelessly from the spout There is an advantage that it can be handled safely while avoiding the risk of getting burned.

[Brief description of drawings]

FIG. 1 is a sectional view of a kettle pot according to an embodiment of the present invention before operation.

FIG. 2 is a cross-sectional view of a main part of the boiling water pot during operation.

[Explanation of symbols]

 3 ... Tank 10 ... Steam escape passage 15 ... Upper lid 19 ... Bellows 21 ... Pushing body 29 ... Opening / closing body (operating member) 31 ... Opening / closing valve 34 ... Spring (returning member) 38 ... Steam hole

Claims (1)

[Claims] 1. An upper lid of a rotatable structure, which rotates about one end as a fulcrum, is provided at an upper end of a case accommodating a tank for storing hot water, and the upper lid is provided for pressurizing hot water in the tank. In addition to accommodating the bellows, a pusher for operating the bellows is provided, and a steam hole for letting the steam in the tank to flow out of the pot through a steam escape passage that does not pass through the bellows is provided on the outer peripheral side of the pusher. Provided at a fixed position near the rotation fulcrum position of the upper lid, an opening / closing valve for opening / closing the steam escape passage, and an operating member for opening / closing the opening / closing valve in conjunction with the pusher, At the time of pouring the hot water in the tank, the opening / closing valve is operated by the operating member interlocking with the pusher to close the steam escape passage, and after the operation of pouring the hot water is completed, the opening / closing valve is returned by the returning member. Restore the on-off valve to its original condition A kettle pot characterized by allowing the steam to escape and opening the steam escape path.