JP2001087134A - Electric hot water storage container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric hot water storage container with which tapping of liquid of an intrinsic temperature is possible even in an initial period of tapping start and washing of a liquid volume pipe is possible. SOLUTION: This electric hot water storage container has an inner container of a thermally insulating structure in which the liquid is housed, an outer case which houses this inner container, a shoulder part which is disposed at the upper opening edge of this outer case, a lid unit which is freely attachably and detachably fitted to the aperture of the shoulder part and covers the upper opening of the inner container, the liquid volume pipe which extends upward from the bottom of the inner container and a pouring pipe which is disposed in the pouring part of the shoulder part. The liquid volume pipe of the electric hot water storage container described above is extended upward from the bottom of the inner container within the inner container and is constituted as a separate body from the pouring pipe so that both are freely attachably and detachably connected to and from each other. Accordingly, the liquid volume pipe exists within the inner container and therefore the temperature of the liquid in the liquid volume pipe is maintained at the intrinsic temperature and the tapping of the hot water is possible even in the initial period of pouring. When the liquid volume pipe is contaminated, the liquid volume pipe may be separated from the pouring pipe and may be easily internally washed in an independent state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a liquid discharge passage of an electric hot water storage container.

[0002]

2. Description of the Related Art In general, an electric hot water storage container is designed such that a liquid in a hot water storage container is guided from a bottom portion of the container to a pouring port through a pipe-like liquid discharge passage by a pumping action of an air pump or an electric pump. Has become.

[0003] In recent years, in many electric hot water storage containers, the remaining amount of liquid in the inner container is detected and displayed on a predetermined liquid amount display portion which can be seen from the outside. . For this reason, the liquid discharge passage generally comprises, outside the inner container, a liquid amount pipe portion extending upward from the bottom of the inner container and a pouring pipe portion on the pouring outlet portion side,
They are integrally connected. For example, when an electronic liquid level display is performed, a liquid level sensor of an electrostatic type may be generally provided in the liquid pipe section.

[0004]

However, if the liquid amount pipe extends upward from the bottom of the inner container outside the inner container as described above, the liquid staying inside the liquid amount tube is easily cooled, and There is a problem that low-temperature hot water is pumped out at the beginning of discharge. On the other hand, the electric hot water storage container as described above may be used not only as a water heater but also as, for example, a cooler, and in such a case, cold barley tea or the like may be filled.

[0005] However, in such a way of use,
Dirt accumulates in the liquid flow tube of the liquid discharge passage, the insulation of the electrostatic electrode part for detecting the liquid amount increases, the interelectrode capacity changes, and accurate liquid amount detection is impossible. Problem.

In order to solve such a problem, it is necessary to separate the liquid flow pipe portion of the liquid discharge passage from the pouring pipe on the pouring port side and perform the cleaning independently. Since the liquid amount pipe is connected integrally with the pouring pipe on the pouring outlet side and cannot be taken out independently, the above-mentioned washing cannot be performed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the provision of a liquid tube inside an inner container prevents the temperature of the liquid inside the liquid tube from changing. In addition, an object of the present invention is to provide an electric hot water storage container capable of cleaning the inside of the liquid amount pipe by enabling the liquid amount pipe and the pouring pipe on the pouring port side to be detachably connected. .

[0008]

Means for Solving the Problems In order to achieve the above object, the present invention is provided with the following means for solving the problems.

(1) The invention of claim 1 That is, the electric hot water storage container of the invention of claim 1 of the present application comprises an inner container having a heat insulating structure for storing a liquid, an outer case storing the inner container, and the outer case. A shoulder provided at an upper opening edge of the inner container, a lid unit detachably fitted to the shoulder opening and covering the upper opening of the inner container, and a liquid amount pipe extending upward from a bottom of the inner container. An electric hot water storage container comprising a pouring pipe provided at a pouring port of the shoulder, wherein the liquid amount pipe extends upward from the bottom of the inner container inside the inner container. It is characterized in that it is formed separately from the pouring pipe and is detachably connected to each other.

[0010] Therefore, according to this configuration, since the liquid pipe is inside the inner container, the temperature of the liquid inside the liquid pipe is maintained at the original temperature, and the hot water is discharged even at the beginning of pouring. On the other hand, when the liquid amount pipe is contaminated, the liquid amount pipe can be separated from the pouring pipe and the inside can be easily washed alone.

(2) Invention of Claim 2 Next, in the electric hot water storage container of the invention of the present invention, the liquid amount pipe of the invention of the above claim 1 is provided with a capacitance type liquid level sensor. ing.

[0012] As described above, in the configuration of the first aspect of the present invention, when the liquid pipe is contaminated, the liquid pipe can be separated from the pouring pipe and the inside can be washed independently.

Therefore, even in the case where the liquid volume tube is provided with, for example, an internal electrode type capacitance type liquid level sensor, it is possible to easily remove dirt attached to the electrode portion. Therefore, the liquid level detecting function of the liquid level sensor can always be maintained with high accuracy.

(3) Invention of Claim 3 Next, in the electric hot water storage container of the invention of the present invention, the liquid amount pipe of the invention of the above claim 1 is provided with a current detection type liquid level sensor. ing.

As described above, according to the configuration of the first aspect of the present invention, when the liquid pipe is contaminated, the liquid pipe can be separated from the pouring pipe and the inside can be washed independently.

Therefore, even in the case where the liquid amount pipe is provided with, for example, a current detection type liquid level sensor, dirt attached to the current detection portion can be easily removed. The liquid level detecting function of the liquid level sensor can always be maintained with high accuracy.

(4) Invention of Claim 4 Next, in the electric hot water storage container of the invention of a fourth aspect of the present invention, the current detection type liquid level sensor of the invention of the third aspect is arranged such that the current detection type liquid level sensor has And a plurality of different current electrodes.

Therefore, in this configuration, the liquid level is accurately detected by a plurality of current electrodes having different lengths arranged in parallel on the outer periphery of the liquid amount pipe.

In addition, detection errors due to dirt are less likely to occur as compared with the above-mentioned capacitance type.

(5) Invention of Claim 5 Next, in the electric hot water storage container of the invention of the present invention, power is supplied to the liquid level sensor of the invention of the second, third, or fourth invention.
The connecting portion with the pouring pipe is configured so as to be made through a detachable contact structure.

Therefore, in this configuration, power supply to each of the liquid level sensors is easily realized while maintaining the detachability of the liquid amount pipe.

[0022]

As described above, according to the electric hot water storage container of the present invention, it is possible to provide an electric hot water storage container having a high hot water temperature at the start of pouring and a good liquid amount detection performance.

[0023]

(Embodiment 1) FIGS. 1 to 5 show the configuration and operation of an electric hot water storage container according to Embodiment 1 of the present invention.

First, as shown in FIGS. 1 and 2, the electric hot water storage container of the present embodiment is divided into upper and lower portions.
A container body in which a synthetic resin ring-shaped shoulder 3 is integrally provided at an upper opening edge of a synthetic resin cylindrical outer case 2 and a stainless steel inner container 4 is accommodated in the outer case 2. 1
A lid 5 for covering the upper part of the container body 1;
And a series of liquid discharge passages 7 extending from the bottom of the inner container 4 to the outside.

The inner container 4 is a cylindrical body having a bottom as a whole. The inner container 4 is made of a stainless steel outer plate 4a and an inner plate 4b which are superimposed on the upper end via a predetermined vacuum insulation space 4e.
It has a heavy wall structure. Then, the flange 4f formed on the outer periphery of the upper end side overlapping portion is connected to the shoulder 3
Is suspended in the outer case 2 while maintaining a predetermined gap 11 by being suspended on a step 3b at the inner peripheral edge at the lower end side of the inner container locking sleeve 3a which is provided vertically downward on the inside. I have. Inside the upper end side opening of the inner container 4, there is formed a neck 4c having a smaller opening diameter by projecting a part of the inner plate 4b inward.

A bottom member 8 made of a synthetic resin is fitted to the lower end of the outer case 2 in abutting contact therewith. The bottom member 8 and the inner container 4 are connected to each other via a connection fitting (not shown). ,
Thereby, the outer case 2, the inner container 4, and the bottom member 8 are integrated with each other.

An electric heater 12 is fitted on the lower surface of the bottom recessed above the inner container 4 from below, and a heat shield plate 13 is provided below the electric heater 12. It is attached to the bottom of the inner container 4 in a fixed state.

A turntable 10 is provided on the outer periphery of the lower surface of the bottom member 8, while a circuit housing box 18 is provided at the upper portion thereof so as to open downward. The circuit board 19 is accommodated and fixed in the. The lower end side opening of the circuit housing box 18 is covered with a cover 20.

Further, the circuit board 19 contains various electric circuit elements constituting a microcomputer, for example, and is provided on the upper surface of a beak (pouring port) 3b projecting forward from the shoulder body 3. Output signals from various operation switches (key switches) of the operation panel unit 21 described below,
In response to various detection signals from various sensors such as the temperature sensor 16, control of empty cooking, boiling and heat retention, etc. is performed, and ON / OF of various operation switches corresponding thereto are performed.
The display of the F state, the setting contents of the timer, etc. are performed. The operation panel unit 21 is provided with, for example, a hot water supply key, a descaling key, a cup noodle timer key as operation switches, a boiling indicator light, a warming indicator lamp, and a descaling indicator lamp as indicator lights.

The lid 5 is connected to a hinge pin 23 with a partially open type bearing 22 integrally formed on the rear portion of the shoulder 3.
, And are pivotally supported so as to be freely opened and closed and detachable. That is, the lid 5 can be opened and closed with the hinge pin 23 as a fulcrum, and can be removed by detaching the hinge pin 23 from the opening of the bearing 22 at a predetermined opening angle. On the other hand, a lock device 24 for keeping the lid 5 closed is provided on the free end side of the lid 5.

The liquid discharge passage 7 is bent from the vicinity of the bottom 4d of the inner container 4 through the opening of the inner container 4 to the front side of the shoulder body 3 while being supported by the neck 4c, thereby bending the beak 3b.
Of the pipe cover 25 which extends obliquely downward in the beak portion 3b from above the water stop valve 27 and finally covers the lower portion of the beak portion 3b.
a is formed as a series of passages extending slightly to protrude from a.

However, the liquid discharge passage 7 is not integrally formed as a single continuous pipe as in the prior art. For example, first, in the inner container 4 described above, the liquid discharge passage 7 is vertically moved from the bottom to the vicinity of the opening. A first pipe portion 7a as a straight liquid pipe extending substantially perpendicular to the first pipe portion 7a, and integrally connected to the first pipe portion 7a;
c, an angle-shaped second pipe portion 7b that extends from the inside of the inner container 4 to the front outside in the vicinity of the opening,
A third pipe portion 7c which is detachably connected to the second pipe portion 7b so as to be detachably connected to the second pipe portion 7b and extends from the second pipe portion 7b to the above-mentioned water stop valve 27; A fourth pipe portion 7d extending obliquely forward in the beak portion 3b,
A fifth pipe portion 7e integrally connected to the fourth pipe portion 7d and extending from the fourth pipe portion 7d to the opening 25a of the pipe cover 25; The first to fifth pipe sections 7a to 7e are continuously integrated by detachably fitting and connecting the second pipe section 7b and the third pipe section 7c at mutually corresponding portions. ing. And the first and second
Pipe portions 7a and 7b form a liquid amount pipe portion, and third to fifth pipe portions 7c to 7e form a pouring port side pouring pipe portion.

As described above, in the liquid discharge passage 7 of the present embodiment, the second pipe portion 7b on the liquid amount pipe side and the third
The pipe portion 7c is detachably fitted and connected to each other, and is configured to be easily detached and disassembled for cleaning. Further, the first pipe portion 7a is provided with a capacitance type water level sensor having a conventionally well-known internal electrode so that the liquid level in the inner container 4 can be detected.

That is, first, the connection end 55 of the second pipe portion 7b with the third pipe portion 7c is connected to the connection end portion of the third pipe portion 7c as shown in FIGS. A small-diameter fitting cylindrical portion 50 fitted into the portion 60 is formed, and a ring-shaped convex ridge 50a is provided on the outer peripheral surface on the distal end side. On the other hand, in the connection end portion 60 of the third pipe portion 7c with the second pipe portion 7b, a concave groove 60a of a ring groove that engages with the ridge 50a corresponding to the ridge 50a. Is provided. Therefore, the small-diameter fitting tubular portion 50 of the second pipe portion 7b
Is inserted and fitted into the connection end 60 of the third pipe portion 7c, the projection 50a and the groove 60a are engaged with each other to realize a secure engagement and fixing and a sealing state. Is done.

On the other hand, the third pipe portion 7b
The connection end 55 with the pipe portion 7c has a rectangular block structure which is located on both left and right sides of the small-diameter fitting tube portion 50 and supplies power to the capacitance type liquid level sensor. Terminals 51 and 52 are provided, and a claw-like energization for detachably contacting the energization terminals 58 and 59 on the shoulder 3 side shown in FIG. Electrodes 53 and 54 are provided, respectively. The current-carrying electrodes 53 and 54 are connected to the second pipe portion 7b.
Insulating wiring cords 56 and 57 provided on the left and right sides of
Is connected to an unshown electrostatic electrode in the first pipe portion 7a. On the side of the shoulder 3 on which the energizing terminals 58 and 59 are provided, there are provided recesses 62 and 63 into which the energizing terminals 51 and 52 having the rectangular block structure are fitted. 63 innermost surface 6
By providing the power supply terminals 2a and 63a to correspond to the power supply terminals 58 and 59, a reliable connection and fixed state between the power supply electrodes and the power supply terminals is realized.

In this case, the lower surfaces 62b and 63b of the recesses 62 and 63 are formed in a tapered surface which is inclined downward inward toward the inner container 4 so that the intruded water drops easily flow down. A notch groove 69 having a similar downward inclined surface 69a is provided between them. In the notch groove 69, the fitting tubular portion 50 of the second pipe portion 7b and the connecting end portion 60 of the third pipe portion 7c are fitted or disengaged. The liquid droplets at the time are designed so as not to adversely affect the electrical connection state.

For the same purpose, the current-carrying terminals 58,
Between 59, an insulating member 65 is interposed in particular.

In the above case, in order to improve the connection between the current-carrying electrodes 53 and 54 and the current-carrying terminals 58 and 59, a magnet catch coupling method is used separately from the coupling force by fitting the pipes. Various connection or engagement structures such as a connector connection method, a terminal pin insertion / engagement method, a screw connection method, and a hook engagement method are employed as necessary.

On the other hand, the air pump 6 is connected to the lid 5
Bellows lower plate 30 and bellows upper plate 31 also serving as bottom plate
An annular bellows 32 is interposed between the bellows upper plate 31 and the upper surface of the cover 5 and a pump pressing plate 33 exposed on the upper surface of the lid 5 is pressed by the pressing operation. Pressurized air is generated in the bellows 32 which expands and contracts. Reference numeral 34 denotes a return spring for extending and returning the bellows 32.

A metal inner lid 35 for covering the opening of the inner container 4 when the lid 5 is closed is fitted to the lower surface of the bellows lower plate 30 from below. Further, the outer peripheral edge of the inner cover 35 is brought into contact with the upper end side inner edge portion 3c of the sleeve 3a on the shoulder body 3 side on which the inner container 4 is locked when the lid body 5 is closed to maintain the airtight state. Seal packing 37 is provided.

Between the bellows lower plate 30 and the inner lid 35, steam generated in the inner container 4 by the passage forming member 38 which is fixedly fastened to the bellows lower plate 30 by screws or the like, is supplied with the air. A steam discharge passage 39 is formed to discharge to the outside without passing through the inside of the pump 6. The steam discharge passage 39 has a first passage 39a formed between the passage member 38 and the inner lid 35, and a second passage 39 formed between the passage member 38 and the bellows lower plate 30. A passage 39b and a cover 5 from the rear exit side of the second passage 39b
And a third passage 39c extending upwardly. The first passage 39a communicates with the inner container 4 through an inlet opening 40 formed in the inner lid 35, and the first passage 39c
a and the second passage 39b are communicated via a communication hole 41 formed in the passage member 38, while the third passage 39b is connected to the third passage 39b.
The passage 39c communicates with the outside through an outlet opening 42 formed on the rear upper surface of the lid 5 as a vapor discharge passage. Further, the first and second passages 39a and 39b are
As described later, it constitutes a part of an air blowing passage for blowing pressurized air from the air pump 6.

A valve chamber 44 is formed between the passage forming member 38 and the inner lid 35 and is surrounded by a cylindrical wall 43 which is integrally provided from an edge of the communication hole 41. In the valve chamber 44, a falling water stop valve 45 for closing the communication hole 41 by its own weight and the flow pressure of the outflow liquid when the hot water storage container falls is provided.

In the configuration of the electric hot water storage container described above, the inner container 4 having a vacuum heat insulating structure for accommodating liquid, the outer case 2 accommodating the inner container 4, and the upper opening edge of the outer case 2 are provided. A shoulder body 3, a lid body 5 which is detachably fitted to the opening of the shoulder body 3 and covers the upper opening of the inner container 4, and a liquid amount pipe extending upward from the bottom of the inner container 4 1st, 2nd
Pipe portions 7a and 7b, and third to fifth pipe portions 7c to 7p as pouring pipes provided at the pouring port portion of the shoulder body 3.
7e, the first and second pipe portions 7a and 7b as the liquid amount pipes extend upward from the bottom inside the inner container 4 and the first and second pipe portions 7a and 7b as the liquid amount pipes. , The second pipe portions 7a and 7b and the third to fifth pipe portions 7c to 7e as pouring pipes are separately formed, and are detachably connected to each other.

Therefore, according to this configuration, since the first and second pipe portions 7a and 7b as the liquid amount pipes are inside the inner container 4, the temperature of the liquid inside them is maintained at the original temperature. In addition, hot water can be discharged even at the beginning of pouring, while the first and second pipe portions 7a and 7b as liquid flow tubes are provided.
When is dirty, the inside can be easily washed independently by separating from the third to fifth pipe portions 7c to 7e which are pouring pipes.

The first and second pipe sections 7a and 7b serving as the liquid flow pipes are each provided with a capacitance type liquid level sensor.

In the above configuration, when the first and second pipe portions 7a and 7b as the liquid amount pipes are contaminated, the first and second pipe portions 7a and 7b as the liquid amount pipes are poured. The inside can be washed independently by being separated from the third to fifth pipe portions 7c to 7e, which are hot water pipes.

Therefore, the first and second pipes having the same liquid amount are used.
Even if the pipe portions 7a and 7b are provided with the capacitance type liquid level sensor as described above, the dirt attached to the electrode portion can be easily removed. The liquid level detection function of the sensor can always be maintained with high accuracy.

As a result, according to the electric hot water storage container having the above-described structure, it is possible to pour out the liquid having the original temperature from the initial stage of the pouring.
It is possible to provide an electric hot water storage container having good liquid level detection performance.

(Embodiment 2) Next, FIGS. 6 to 8 show the configuration of an electric hot water storage container according to Embodiment 2 of the present invention.

This embodiment is characterized in that the structure of the liquid level sensor in the structure of the first embodiment is changed from the capacitance type to the current detection type. The configuration and operation of the other parts are basically the same as those of the first embodiment.

That is, in the configuration of the present embodiment, the first to fourth current electrodes 91 to 94 are provided on the outer periphery of the first pipe portion 7a.

As shown in detail in FIG. 8, for example, the first to fourth current electrodes 91 to 94 provided on the outer periphery of the first pipe portion 7a have respective lengths, that is, from the bottom 4d by changing the distance L ₁ ~L ₄ to the distal end by binding ring 90 and 90, ... are arranged by tying with a predetermined interval, a change in liquid level L ₁ ~L ₄ The number of conducting current electrodes changes according to the current. Therefore, the liquid level can be reliably detected by making a determination on the microcomputer control unit side (not shown). Further, since each electrode portion is exposed to the outside, cleaning is easy.

(Embodiment 3) Next, FIG. 9 shows a configuration of an electric hot water storage container according to Embodiment 3 of the present invention.

In this embodiment, the neck 4c of the inner container 4 of the first embodiment is eliminated, and the first and second pipes 7a and 7b are provided in contact with the side wall of the inner container 4. The other features are basically the same as those of the first embodiment.

(Embodiment 4) Next, FIG. 10 and FIG.
1 shows the configuration of an electric hot water storage container according to Embodiment 4 of the present invention.

This embodiment is characterized in that the same liquid discharging and liquid level detecting structure as that of the above-described second embodiment is realized in an inner-plug type electric hot water storage container as shown in the figure. The other configuration is basically the same as that of the second embodiment.

That is, in this configuration, for example, as shown in FIG.
An inner plug 87 that is fitted from above to insulate the opening is provided. The inner plug 87 is fixed to the outer periphery of the opening of the inner container 4 via a large-diameter outer peripheral edge portion 87f on the upper end side, and is fitted into the opening of the inner container 4 at the lower end side. The inner container 4 with respect to the lower end side cylindrical body portion 87e of the inner plug main body having the body portion 87e.
Sleeve-shaped fitting member 87d fitted in the neck 4c
And the lower cover 87b are fitted and integrated, respectively, and a heat insulating material 87a is provided inside them.

An outlet pipe communication passage 120 as shown in the figure is formed in the vertical direction at the center of the inside.
A fitting pipe 87c having a fitting hole 116 for fitting to the first pipe portion 7a constituting the liquid flow pipe is provided below the discharge pipe communication passage 120.
The fitting end 115 at the upper end of the first pipe portion 7a is removably inserted into and fitted into the fitting hole 116. Then, on the outer periphery of the first pipe portion 7a, the same first to fourth current electrodes 91 to 91 as those of the above-described second embodiment are provided.
A current detection type liquid level sensor provided with 94 is provided.

On the other hand, a second pipe portion 7b extending horizontally on the beak portion 3b side of the electric hot water storage container is integrally communicated with the upper wall 87f of the outlet pipe communication passage 120, and is connected to the second pipe portion 7b. Of the pipe portion 7b is connected to the rear end side of the third pipe portion 7c at the pouring port portion by the same energizable and detachable fitting structure as in the first embodiment. I have.

On the third pipe portion 7c side, power supply wiring cords 56a, 57a
The lead terminals 96 and 97 are drawn out, and as shown in FIG. 11, for example, a power supply terminal 9 having a leaf spring structure on the power supply side at an opening 86a formed in a predetermined support member 86 on the shoulder 3 side.
It is connected in the up-down direction while maintaining a predetermined pressing force with 8,99.

Therefore, also in the case of this configuration, since the first pipe portion 7a as the liquid amount pipe is inside the inner container 4, the temperature of the liquid inside the inner container 4 is maintained at the original temperature, and the molten metal is poured. Hot water can be poured even at the beginning of the start,
When the first pipe portion 7a as a liquid amount pipe becomes dirty,
Third and fourth pipe portions 7c, 7 shown as pouring pipes
d and the inside can be easily washed alone.

On the other hand, in addition, in the case of this configuration, the first and second pipe portions 7a and 7b on the liquid amount tube side and the third and fourth pipe portions 7c and 7d on the pouring port side are Since the fitting is securely connected via the inner plug 87 fixed to the neck 4c of the inner container 4, there is no danger of water leakage or poor electrical connection at the fitting portion.

Further, by taking out the first pipe portion 7a and the third pipe portion 7c, the inner plug 87 itself can be washed.

(Embodiment 5) Next, FIGS.
3 shows a configuration of an electric hot water storage container according to Embodiment 5 of the present invention.

In this embodiment, for example, FIG.
As shown in FIG. 1, the first pipe portion 7a and the second pipe portion 7b in the first embodiment are constituted by a completely heat-resistant completely integrated pipe 7a such as a ceramic pipe continuous with each other. The heater wires 80, 80,... Are embedded in a coil shape inside the side wall of the lower end portion 75 so that heating can be performed in both the inside and outside directions. , Power is supplied from the power supply 100 via power supply lines 81a and 81b.

Although not shown in the drawings, the outer peripheral surface thereof has, for example, the first to fourth elements similar to those of the second embodiment.
The current electrodes 91 to 94 are provided in the same configuration, and the connection to the third pipe portion 7c employs the same energizing and detachable connection structure as that of the first embodiment.

According to such a configuration, in addition to the effects of the first and second embodiments, the liquid in the inner container 4 can be heated at the liquid introduction end of the liquid discharge passage 7, and
Since the required liquid can be discharged while being heated each time, the heating efficiency is improved, and the electric heater 12 on the bottom 4d side of the inner container 4 can be omitted or the wattage can be reduced. become able to.

As a result, the structure of the electric hot water storage container itself can be simplified, and the product cost is greatly reduced.

(Other Embodiments) The present invention can be embodied in the following various forms in addition to the above embodiments.

(1) An electric pump system is adopted instead of the air pump system.

(2) First to fifth pipe portions 7a to 7
e or the first to fourth pipe parts 7a to 7d are all independently and removably fitted and connected to each other.
In addition to e, 7a to 7d, it is also possible to perform the washing with the falling water stop valve 27 alone.

With this configuration, the cleaning performance of each part of the liquid discharge passage is improved.

(3) A plurality of types of first and second pipe portions 7a and 7b or first pipe portions 7a as liquid volume pipes are provided for fresh water (hot water) and for other uses (tea, coffee, etc.). , Depending on the degree of dirt.

(4) A limit switch or the like is provided, and when the lid 5 is opened, the power supply to each part of the liquid level sensor including the power supply connection part is cut off to ensure safety.

[Brief description of the drawings]

FIG. 1 is a sectional view of an upper half portion of an electric hot water storage container according to Embodiment 1 of the present invention.

FIG. 2 is a sectional view of a lower half of the electric hot water storage container.

FIG. 3 is a perspective view of a main part on the shoulder side of the electric hot water storage container.

FIG. 4 is a perspective view of a main part of a liquid amount pipe of the electric hot water storage container as viewed from the back side.

FIG. 5 is a perspective view of the main part of the liquid amount pipe of the electric hot water storage container as viewed from the front side.

FIG. 6 is a sectional view of an upper half portion of the electric hot water storage container according to Embodiment 2 of the present invention.

FIG. 7 is a sectional view of a lower half of the electric hot water storage container.

FIG. 8 is an enlarged front view of a current detection type liquid level sensor unit of the electric hot water storage container.

FIG. 9 is a sectional view of a main part of an electric hot water storage container according to Embodiment 3 of the present invention.

FIG. 10 is a sectional view of an electric hot water storage container according to Embodiment 4 of the present invention.

FIG. 11 is an enlarged sectional view of a main part of the electric hot water storage container.

FIG. 12 is a sectional view of an electric hot water storage container according to Embodiment 5 of the present invention.

FIG. 13 is an enlarged sectional view of a main part of the electric hot water storage container.

[Explanation of symbols]

1 is a container body, 2 is an outer case, 3 is a shoulder, 4 is an inner container,
4a is an outer plate, 4b is an inner plate, 5 is a lid, 6 is an air pump, 7 is a liquid discharge passage, 7a is a first pipe portion, 7b is a second pipe portion, and 7c is a third pipe portion. , 7d is a fourth pipe section, 7e is a fifth pipe section, 12 is an electric heater,
50 is a small-diameter fitting cylindrical portion, 50a is a ridge portion, 51 and 52 are energizing terminals, 53 and 54 are energizing electrodes, 55 is a connection end of the second pipe portion 7b with the third pipe portion 7c, 5
6, 57 are wiring cords, 60 is a connection end of the third pipe part 7c with the second pipe part 7b, 60a is a concave groove, 91 to 91
Reference numeral 94 denotes first to fourth current electrodes.

Claims (5)

[Claims] An inner container having a heat insulating structure for storing a liquid,
An outer case containing the inner container, a shoulder provided at an upper opening edge of the outer case, a lid unit detachably fitted to the shoulder opening, and covering the upper opening of the inner container; In an electric hot water storage container comprising a liquid pipe extending upward from a bottom of the inner container and a pouring pipe provided at a pouring port of the shoulder, the liquid pipe is provided inside the inner container. While extending upward from the bottom of the inner container,
An electric hot water storage container, which is formed separately from the pouring pipe and is detachably connected to each other. 2. The electric hot water storage container according to claim 1, wherein the liquid amount pipe is provided with a capacitance type liquid level sensor. 3. The electric hot water storage container according to claim 1, wherein the liquid amount pipe is provided with a current detection type liquid level sensor. 4. The electric hot water storage container according to claim 3, wherein the current detection type liquid level sensor is configured by arranging a plurality of electrodes having different lengths on the outer circumference of the liquid amount pipe. 5. The power supply to the liquid level sensor is performed via a detachable contact structure at a connection portion with the pouring pipe.
Or the electric hot water storage container according to 4.