JPH07102189B2 - Electric hot water storage container - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric hot water storage container that is also used for keeping hot water and also serves as a boiling water heater. More specifically, it is possible to pour hot water or the like contained therein by the pumping force of an air pump. The present invention relates to a boiling electric hot water storage container configured.

[0002]

2. Description of the Related Art In the case of this kind of electric hot water storage container, for example,
By pressing the pressing plate exposed on the upper surface of the container body, pressurized air can be pressure-fed from the air pump into the inner container for liquid storage arranged in the container body. Is common.

[0003]

In the case of an electric hot water storage container that also serves as a water heater, a large amount of steam is generated in the inner container, so it is necessary to provide a steam discharge passage for discharging this steam to the outside. The steam discharged through this steam discharge passage is 100 ° C. when boiling,
Members that make up the air pump when passed through the air pump
(For example, a bellows made of synthetic resin) may be deteriorated by being affected by heat, and durability may be impaired. Therefore, it is necessary to make the steam discharge passage a structure that does not pass through the air pump.

In the case of the above structure, the air passage leading to the air pump and the steam discharge passage are selectively closed in conjunction with the operation of the pressing plate during pouring and non-pouring of hot water. However, in the case where the steam discharge passage passes through the air pump as described above, the alternative blockage can be easily achieved by opening and closing the same place, but the steam discharge passage is In the case of a structure that does not pass through the inside of the pump, special measures must be taken to achieve the above-mentioned alternative blockage.

Further, in the electric hot water storage container, it is known that the temperature of the outer wall of the inner container is detected by a sensor to control the energization of the electric heater, but the outer wall of the inner container is directly heated by the electric heater. Therefore, the outer wall temperature is affected by heat conduction from the electric heater, especially during boiling. As a result, the temperature becomes higher than the hot water temperature in the inner container.
Therefore, there is a disadvantage that a difference occurs between the sensor detected temperature and the actual hot water temperature.

The present invention has been made in view of the above points, and in an electric hot water storage container having a steam discharge passage that does not pass through the air pump, an alternative of the air passage leading to the air pump and the steam discharge passage is provided. It is an object of the present invention to make it possible to easily achieve the target blockage and to accurately switch the power supply to the electric heater from the heating state to the heat retaining state by detecting the steam temperature in the boiling state.

[0007]

In the present invention, as means for solving the above-mentioned problems, an inner container 6 heated by an electric heater 9 and air is pressure-fed into the inner container 6 to pour out a liquid. An air pump 10 to be operated, and the air pump 10
In the electric hot water storage container provided with a pressing plate 11 for pressing and a steam discharge passage 22 for discharging the steam generated in the inner container 6 to the outside without passing through the air pump 10, Of the air passage 17 and the steam discharge passage 22 are provided with valve seats 16 and 37 facing each other, and a valve body 24 that responds to the pressing operation of the pressing plate 11 is provided between the valve seats 16 and 37. The valve body 24 is provided to block the valve seat 16 on the side of the air passage 17 to prevent the inflow of steam into the air pump 10 when the pressing plate 11 is not pressed, and Discharge passage 2
The valve seat 37 on the second side is opened, while the valve seat 16 on the air passage 17 side is opened and the valve seat 37 on the steam discharge passage 22 side is closed when the pressing plate 11 is pressed. A temperature sensor 29 that detects the boiling temperature and switches the power supply to the electric heater 9 from a heating state to a heat retaining state is provided in the middle of the steam discharge passage 22.

[0008]

In the present invention, the following actions can be obtained by the above means.

That is, when the pressing plate 11 is not pressed, the valve body 24 closes the valve seat 16 on the side of the air passage 17 from the air pump 10 to prevent vapor from entering the air pump 10. While the steam is discharged through the steam discharge passage 22 that does not pass through the air pump 10,
During the pressing operation of the pressing plate 11, the valve body 24 opens the valve seat 16 on the side of the air passage 17 so that the pressurized air can be pumped from the air pump 10 into the inner container 6, and the steam is discharged. The valve seat 37 on the passage 22 side is closed to prevent air leakage from the air pump 10 during pressurized air pressure feeding. Moreover, since the electric power to the electric heater 9 is switched from the heating state to the heat retaining state by the temperature sensor 29 which detects the steam temperature in the boiling state,
After boiling once, the steam S is not generated so much, and the amount of steam discharged to the outside through the steam discharge passage 22 is regulated, resulting in high safety.

[0010]

According to the present invention, the inner container 6 to be heated by the electric heater 9, the air pump 10 for pumping air into the inner container 6 to inject the liquid, and the air pump 10 are provided. An electric hot water storage container comprising a pressing plate 11 for pressing operation and a steam discharge passage 22 for discharging the steam generated in the inner container 6 to the outside without passing through the air pump 10, Valve seats 16, 37 facing each other in the air passage 17 and the steam discharge passage 22
And a valve element 24 that responds to the pressing operation of the pressing plate 11 is interposed between the valve seats 16 and 37, and the valve element 24 is provided when the pressing plate 11 is not pressed. The valve seat 16 on the side of the air passage 17 is closed to block the inflow of steam into the air pump 10 and the valve seat 37 on the side of the steam discharge passage 22 is opened, while the pressing plate 11 is pressed. Since the valve seat 16 on the side of the air passage 17 is opened and the valve seat 37 on the side of the steam discharge passage 22 is closed, the valve body 24 is moved into the air pump 10 when the pressing plate 11 is not pressed. Open air passage 17
Side valve seat 16 is closed to prevent steam from entering the air pump 10. When the pressing plate 11 is pressed, the valve body 24 closes the valve seat 37 on the steam discharge passage 22 side to close the air pump. In the electric hot water storage container having the steam discharge passage 22 that does not pass through the air pump 10, the air passage 17 and the steam discharge passage 22 from the air pump 10 can be prevented. There is an excellent effect that the alternative occlusion can be easily achieved with a simple structure.

Further, the steam generated in the inner container 6 is discharged to the outside through the steam discharge passage 22 which does not pass through the air pump 10 when the pressing plate 11 is not pressed. There is also an effect that abnormal pressurization in the inner container 6 can be prevented, a problem that the air pump 10 is deteriorated due to heat influence is solved, and durability of the air pump 10 can be improved.

Furthermore, the boiling state is detected by the steam temperature detected by the temperature sensor 29 provided in the middle of the steam discharge passage 22, and the electric power to the electric heater 9 is switched from the heating state to the heat retaining state. Therefore, since there is not much difference between the temperature of the hot water in the inner container 6 and the temperature detected by the temperature sensor 29, the boiling state can be accurately detected. There is also an effect that the amount of steam discharged to the outside through the passage 22 is regulated and the safety becomes high.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

This electric hot water storage container is used for both boiling water and heat retention, and has a main body case 1 having a shoulder member 4 attached to the upper end of the outer case 3, and the main body case 1.
And a lid body 2 that covers the upper part of the.

An inner container 6 made of a corrosion-resistant metal such as stainless steel is disposed in the main body case 1 so as to form a water supply port 7 penetrating the shoulder member 4 on the upper part thereof. That is, the inner container 6 has its upper end opening edge 6a connected to the opening edge 4a of the shoulder member 4, while its bottom surface 6b is connected to the bottom portion of the outer case 3 via the support members 8,8. It is arranged and fixed inside.

A heater 9 for heating is attached to the outer peripheral wall of the inner container 6.

On the other hand, the lid body 2 includes an upper lid 36 pivotally supported by a shoulder member 4 on the upper portion of the main body case 1 via a hinge pin 5 and an inner lid 12 for tightly plugging the water supply port 7. The inner container 6 is provided in the upper lid 36.
An air pump 10 for pouring the hot water inside is provided. The air pump 10 is a bellows type air pump composed of a substrate 10a which also serves as a bottom plate of the upper lid 36, and a movable plate 10c which is attached to the upper surface of the substrate 10a via a bellows 10b which is expandable and contractible. The pressure plate 11 is brought into contact with the upper surface of the movable plate 10c so as to be pressed and driven. An opening 31 for exposing the pressing plate 11 is formed on the upper surface of the upper lid 36.

The inner lid 12 has an air pump 1
An inner cavity 13 is formed that serves both as a passage for pressurized air from 0 and a passage for steam from the inner container 6.

The discharge port 15 of the air pump 10 and the inner lid inner cavity 13 form the lid 2 (specifically, the upper lid 36).
When the lid is closed, it is airtightly communicated via an air passage 17 having a valve seat 16 made of a seal member.
Reference numeral 14 is an inlet of the air pump 10.

The inner lid 12 has a liquid pumping pipe 18 facing the inner bottom of the inner container 6 and a liquid pouring pipe 1 facing the outside of the main body case 1.
9 are attached to each other, and both are made to communicate with each other via an inner lid internal passage 20 to form a liquid pouring passage 21 which makes the inside of the inner container 6 and the outside of the main body case 1 communicate with each other. Reference numeral 30 is a spout at the tip of the liquid spout tube 19. The liquid suction pipe 18 and the liquid discharge pipe 19 may be attached to the shoulder member 4.

Further, the inner lid 12 is formed with a steam passage 23 for guiding the steam S generated in the inner container 6 through the inner lid inner cavity 13 to the space 32 above the shoulder member 4. Has been done. With this configuration, the steam S generated in the inner container 6 is led out to the outside via the inner lid inner cavity 13, the steam passage 23, and the upper space 32 of the shoulder member 4, and thus the inner lid is formed. A steam discharge passage 22 for discharging the steam S to the outside without passing through the air pump 10 by the inner cavity 13, the steam passage 23 and the upper space 32 of the shoulder member 4.
Is to be configured.

The inlet side opening of the steam passage 23 serves as a valve seat 37 on the steam discharge passage 22 side facing the valve seat 16 on the air passage 17 side. A valve body 24 for selectively closing the valve is disposed in a state of being biased in a direction of closing the valve seat 16 on the air passage 17 side by a spring 25 acting as a returning means. Therefore, in the normal state, the valve seat 37 on the steam discharge passage 22 side is opened and the valve seat 16 on the air passage 17 side is opened.
Is to be closed.

The valve body 24 is configured to be pushed down by an interlocking member 26 disposed in the air pump 10 in interlock with the pressing operation of the pressing plate 11. A constant gap D is formed between the valve body 24 and the valve seat 37 on the steam discharge passage 22 side.

With this configuration, when the pressing plate 11 is pressed by a predetermined stroke (that is, when the valve body 24 moves by a movement amount corresponding to the gap D).
The valve body 24 is seated on the valve seat 37 on the side of the steam discharge passage 22 to close the steam discharge passage 22, and the air inside the air pump 10 is closed inside the inner container 6 via the inner lid lumen 13. When the pressing operation on the pressing plate 11 is released, the valve body 24 is returned to the original state (that is, the state in which the valve seat 16 on the air passage 17 side is closed) by the spring 25. Reference numeral 27 is a return spring of the air pump 10, and 28 is a return spring of the interlocking member 26.

The outlet side opening 38 of the steam passage 23 faces the position opposite to the pouring outlet 30, and a steam temperature is detected at a portion of the shoulder member 4 facing the outlet side opening 38. A temperature sensor 29 is installed. The temperature sensor 29 is connected to the heater 9 via a lead wire 33 and an outlet 34 arranged in a space 35 formed between the inner container 6 and the outer case 3, and is adapted to detect the temperature of steam. It has a function of controlling the heater current, and when the water in the inner container 6 boils, the temperature of the steam is detected and the heater 9 is switched from heating to heat retention.

The electric hot water storage container constructed as described above operates as follows.

In a state where the hot water in the inner container 6 is not poured (in other words, when the pressing plate 11 is not pressed), the valve seat 16 on the side of the air passage 17 leading to the inside of the air pump 10 is operated by the valve body 24. The valve seat 37 is closed and is on the side of the steam discharge passage 22.
Is opened and the steam S generated in the inner container 6
Does not enter the air pump 10, and the steam discharge passage 2
It is discharged to the outside via 2. Therefore, even when water is boiled in the inner container 6, the inner container 6 does not have an abnormally high pressure, and the steam does not pass through the air pump 10 and flows through the steam discharge passage 22. There is no concern about heat deterioration of the air pump 10 from the place where it is discharged to the outside through the air.

On the other hand, when the hot water in the inner container 6 is poured (in other words, when the pressing plate 11 is pressed), the spring 27 is compressed, and the compression causes the interlocking member 26 to urge the spring 28. And moves downward, and the valve body 24 moves the spring 25 as the interlocking member 26 moves downward.
The valve seat 16 on the side of the air passage 17 is opened by being pushed down against the urging force of the valve seat 37, and the valve seat 37 on the side of the steam discharge passage 22 is closed to prevent air leakage from the air pump 10 when sending pressurized air. To be done. Therefore, the liquid W in the inner container 6 can be reliably poured out by the pressurized air from the air pump 10.

In the case of this embodiment, since the gap D is provided between the valve body 24 and the valve seat 37 on the side of the steam discharge passage 22, the valve body 24 moves by a movement amount corresponding to the gap D. Until the end (that is, until the pressing plate 11 is pressed for a predetermined stroke), the valve seat 3 on the steam discharge passage 22 side is
7 is not blocked. Therefore, the air pump 10 operates, but the pressurized air from the air pump 10 is not supplied to the steam passage 2
3 (in other words, it escapes through the steam discharge passage 22), the pressure rise in the inner container 6 does not occur, and the inner container 6
The liquid W therein is never poured out from the pouring port 30. That is, when a slight force is applied to the pressing plate 11 without the intention of pouring the liquid, careless pouring of the liquid is prevented. In addition, the pressing plate 1 without the intention of pouring liquid
As a result, the rise of the internal pressure of the inner container 6 when a little force acts on 1 is prevented, and as a result, the careless pouring of the liquid due to the increase of the internal pressure can be prevented.

After that, when the pressing force applied to the pressing plate 11 is released, the pressing plate 11 rises together with the movable plate 10c due to the urging force of the spring 27, and the interlocking member 26 is accompanied by the rising.
Moves up by the urging force of the spring 28, and the valve body 24 rises up due to the urging force of the spring 25.
As a result, the valve seat 16 on the air passage 17 side is closed, and the valve seat 37 on the vapor discharge passage 22 side is opened, so that the initial state is restored.

As described above, when hot water is not drawn
When the pressing force is not applied to the pressing plate 11, the inside of the inner container 6 is communicated with the outside through the steam discharge passage 22, but when the air pump 10 performs the compression operation. In the valve seat 3 on the steam discharge passage 22 side.
Since 7 is closed and the communication between the inside of the inner container 6 and the outside is blocked, the compressed air in the air pump 10 can be reliably pressure fed into the inner container 6 without leaking to the outside. In addition, in normal time, the steam S in the inner container 6
Is to be discharged to the outside through a separately formed steam discharge passage 22 without passing through the inside of the air pump 10, so that the durability of the air pump 10 is impaired by the heat of the steam. There is no.

Moreover, in this embodiment, the boiling state is detected by the steam temperature detected by the temperature sensor 29 provided in the middle of the steam discharge passage 22, and the electric heater 9 is energized from the heating state to the heat retaining state. The temperature of the hot water in the inner container 6 and the temperature sensor 2
Since there is not much difference between the detected temperature of 9 and the detected temperature, the boiling state can be accurately detected. Therefore, after boiling once, the steam S is not generated so much, and the amount of steam discharged to the outside through the steam discharge passage 22 is regulated, resulting in high safety.

In the above embodiment, the lid 2 is openable and closable, but it may be detachable.

Furthermore, the invention of the present application is not limited to the configuration of the above-mentioned embodiment, and it goes without saying that it can be appropriately designed within the scope of the invention.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an electric hot water container according to an embodiment of the present invention.

[Explanation of Codes] 6 is an inner container, 10 is an air pump, 11 is a pressing plate, 16
Is a valve seat, 17 is an air passage, 22 is a steam discharge passage, 24 is a valve element, 25 is return means (spring), 26 is an interlocking member,
37 is a valve seat.

Claims (1)

[Claims] 1. An inner container (6) heated by an electric heater (9), an air pump (10) for pumping air into the inner container (6) to inject a liquid, and the air pump ( A pressure plate (11) for pressing the pressure vessel (10) and a steam discharge passage (22) for discharging the steam generated in the inner container (6) to the outside without passing through the air pump (10). An electric hot water storage container, the air pump (10)
Valve seats (16) and (37) facing each other are provided in the air passage (17) from the above and the vapor discharge passage (22) respectively, and between the valve seats (16) and (37), Interposing a valve body (24) that responds to the pressing operation of the pressing plate (11),
Valve body (24), the inflow of steam into the pressing plate (11) of the non-pressing during operation the air passage (17) side of the valve seat (16) closed to air pump (10) in the while opening the blocking is and the steam discharge passage (22) side of the valve seat (37), at the time of pressing operation of the pressing plate (11) opens the air passage (17) side of the valve seat (16) And before
Serial as well as composed as to close the steam discharge passage (22) side of the valve seat (37), the middle of the steam discharge passage (22)
The boiling temperature is detected and the electric heater (9) is connected.
Temperature sensor that switches electricity from heating state to heat retaining state
An electric hot water storage container having (29) attached .