JPH0747028A - Electric hot water storage container - Google Patents

Abstract

(57) [Summary] [Purpose] A more efficient water purification effect can be obtained by using the forced circulation water purification method and the immersion water purification method together. In an electric hot water storage container provided with a container body 1 having an inner container 3 configured to be able to heat the content liquid W by an electric heater 4 provided on the bottom surface, the content liquid W is contained in the inner container 3. The water purifier 25 with a built-in activated carbon that purifies the content liquid W at the time of natural convection is disposed in a submerged state, and the content liquid W that has passed through the water purifier 25 is pumped out through the pumping pump 34 and again in the inner container 3. The forced circulation means 35 for recirculating to is attached.

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 having a water purification function.

[0002]

2. Description of the Related Art Recently, an offensive odor (2 MIB: methylisoborneol) and residual chlorine in the content liquid in an electric hot water storage container,
While effectively removing organic substances, trihalomethane (chloroform), etc., for the purpose of obtaining hot water with good taste, while using the electric pump for pouring the content liquid, forcibly circulating the content liquid It has been proposed to pass through the activated carbon of the water purification unit (for example,
See JP-A-5-7530).

[0003]

However, in the case of the above-mentioned known example, since the content liquid is circulated for water purification by using the driving force of the electric pump for pouring the content liquid, the water purification efficiency is improved. In order to raise the temperature, the forced circulation of the content liquid must be carried out for a long time, and problems such as a decrease in durability of the electric pump and an increase in power consumption cannot be avoided. There is also a problem that it cannot be applied to a manually pressurized pouring type electric hot water storage container that is not equipped with an electric pump.

Further, there is also one in which a water purifying unit is installed in a hot water storage container in a dipped state, and water can be purified by contacting activated carbon in the water purifying unit with the content liquid by utilizing natural convection of the content liquid. Although proposed, in this case, natural convection is unlikely to occur after boiling of the content liquid, so that the water purification action may be insufficient.

The present invention has been made in view of the above points, and it is an object of the present invention to obtain a more efficient water purification action by using the forced circulation water purification system and the immersion water purification system together. Is.

[0006]

According to the first aspect of the present invention, as a means for solving the above-mentioned problems, the inner container 3 configured so that the content liquid W can be heated by the electric heater 4 provided on the bottom surface. In an electric hot water storage container having a container body 1 having a water purifier 25 containing activated carbon for purifying the content liquid W during natural convection of the content liquid W in the inner container 3, and A forced circulation means 35 for pumping the content liquid W that has passed through the vessel 25 through the pumping pump 34 and returning it to the inner container 3 again is provided.

According to a second aspect of the present invention, as means for solving the above-mentioned problems, in the electric hot water container according to the first aspect, the inner container side outlet 3 in the forced circulation means 35 is provided.
5a is located above the full level Lmax of the content liquid W.

According to a third aspect of the invention, as a means for solving the above-mentioned problems, in the electric hot water storage container according to the first or second aspect, the water purifier 25 is made detachable.

According to a fourth aspect of the present invention, as means for solving the above-mentioned problems, in the electric hot water storage container according to the first, second or third aspect, the operating time of the pump pump 34 is set before the boiling of the content liquid W. It is set to a predetermined time.

According to a fifth aspect of the present invention, as means for solving the above-mentioned problems, in the electric hot water storage container according to the first, second, third or fourth aspect, the pumping pump 34 can be rotated normally and reversely. It is designed to be used for both liquid pouring and forced circulation water purification.

[0011]

According to the first aspect of the invention, the following actions can be obtained by the above means.

That is, when the content liquid W passes through the water purifier 25 by natural convection during heating of the content liquid, a water purifying action is obtained, and the forced circulation by the pump pump 34 causes the content liquid W to pass through the water purifier 25. A water purifying effect is also obtained when doing. In addition, the forced circulation purified water by the pumping pump 34,
It can be executed only in the temperature range or time when the water purification effect is high.

According to the invention of claim 2, the following effects can be obtained by the above means.

That is, when the circulating liquid by the forced circulation means 35 is brought into contact with air without fail when it is returned into the inner container 3, the aeration effect improves the removal effect of trihalomethane and the like.

According to the third aspect of the invention, the following effects can be obtained by the above means.

That is, if the water purifier 25 is used for a predetermined period of time, its water purifying action is deteriorated, and therefore the water purifier 25 needs to be replaced. However, since the water purifier 25 is detachable, the replacement work becomes extremely easy.

According to the invention of claim 4, the following effects can be obtained by the above means.

That is, the pumping pump 34 is operated only for a predetermined time before boiling, which has a great effect of removing free residual chlorine by the catalytic reaction of the activated carbon C, and the residual chlorine is efficiently removed by forced circulation of the content liquid W. To be executed.

According to the invention of claim 5, the following effects can be obtained by the above means.

That is, by rotating one pumping pump 34 forward or backward, the pump can be operated as a pump for pouring content liquid or a pump for forced circulation water purification.

[0021]

According to the invention of claim 1, in an electric hot water storage container provided with a container body 1 having an inner container 3 configured to be able to heat the content liquid W by an electric heater 4 provided on the bottom surface. A water purifier 25 with a built-in activated carbon that purifies the content liquid W at the time of natural convection of the content liquid W is disposed in the inner container 3 in a submerged state, and the content liquid W passing through the water purifier 25 is pumped by a pump. A forced circulation means 35 for drawing out through 34 and returning to the inner container 3 again is provided, and a water purifying action is obtained when the content liquid W passes through the water purifier 25 by natural convection during heating of the content liquid. Since the water content is supplied to the water purifier 25 by the forced circulation by the pumping pump 34, the water purifying action can be obtained. Therefore, the electric hot water storage container of the manual pressurizing pump type and the electric hot water storage of the electric pump type can be obtained. Content There is an excellent effect that a very efficient water purification action be applicable to can be obtained. In addition,
Since the forced circulation purified water by the pumping pump 34 can be executed only in the temperature range or time where the water purifying effect is high, the durability of the pumping pump 34 is not impaired and the power consumption can be saved.

According to the second aspect of the present invention, in the electric hot water storage container according to the first aspect, the inner container side outlet 35a of the forced circulation means 35 is located above the full water level Lmax of the content liquid W. When the circulating liquid by the forced circulation means 35 comes into contact with air without fail when it is returned into the inner container 3, the removal effect of trihalomethane or the like is improved by the aeration effect, and a further water purification effect can be expected. It has an excellent effect.

According to the third aspect of the present invention, in the electric hot water storage container according to the first or second aspect, the water purifier 25 is detachable, so that the water purifier can be replaced very easily when the water purifying action is deteriorated. There is an excellent effect of becoming.

According to the invention of claim 4, in the electric hot water storage container of claim 1, 2 or 3, a pump pump 34.
Since the operating time of is set to the predetermined time before the boiling of the content liquid W, the removal of free residual chlorine by the catalytic reaction of the activated carbon C is efficiently executed, and the power consumption is suppressed as much as possible. In addition, there is an excellent effect that a further water purification effect can be expected.

According to the invention of claim 5, claims 1, 2 and
In the electric hot water storage container described in 3 or 4, the pump 34 can be rotated in the forward and reverse directions so that the pump can be used both for pouring the content liquid and for the forced circulation water purification. Therefore, one pump can be installed. Therefore, there is an excellent effect that the structure can be simplified and the cost can be reduced.

[0026]

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

Embodiment 1 FIG. 1 shows an electric hot water storage container according to Embodiment 1 of the present invention. The present embodiment corresponds to the invention of claims 1 to 4.

The electric hot water storage container of this embodiment has a container body 1 having a cylindrical inner container 3 made of stainless steel and having an electric heater 4 for heating, and an upper opening of the inner container 3 can be freely opened and closed. And a lid 2 that covers the above.
A content liquid W (that is, hot water) is stored in the inner container 3. In the case of the present embodiment, the electric heater 4 is provided on the bottom surface of the inner container 3. Reference numeral 5 is a temperature sensor, and 6 is a heat shield plate.

On the outer peripheral side of the container body 1, a cylindrical outer case 7 made of sheet metal, a synthetic resin shoulder member 8 attached to the upper end of the outer case 7 in an engaged state, and the outer case 7 and a bottom member 9 made of a synthetic resin made of a synthetic resin, which is attached to the lower end of the lid 7 in an engaged state. The hinge pins 11 of the lid 2 are provided on the rear side and the front side of the shoulder member 8. A pipe support portion 8b having a hinge support portion 8a to be locked and a spout 10 through which a spout 12b, which is an outlet of a liquid spout passage 12 described later, faces is formed.

An inlet 12a of a liquid pouring passage 12 for pouring the content liquid W (for example, hot water) in the inner container 3 to the outside is connected to the bottom surface of the inner container 3 and the liquid is The spout passage 12 passes through the space between the inner container 3 and the outer case 7 on the front side of the container body 1 so that its spout 12b is exposed to the spout 10 of the pipe cover portion 8b. ing. The straight pipe portion 12c of the liquid pouring passage 12 is used as a water level detecting pipe, and a viewing window 13 is formed in a portion of the outer case 7 corresponding to the straight pipe portion 12c. Reference numeral 14 is a fall stop valve provided midway in the liquid pouring passage 12.

The lid body 2 is pivotably supported by a hinge pin 11 with respect to a hinge support portion 8a of a shoulder member 8 of the container body 1 so as to be openable and closable therein, and the inner container is provided therein. A bellows type air pump 15 for pumping pressurized air into the inside of the apparatus 3 is provided. Code 16
Is a pump push plate for pushing the air pump 15,
Reference numeral 17 is an intake valve of the air pump 15, and 18 is a discharge port of the air pump 15.

Inside the cover 2, a space between a bottom plate 15a of the air pump 15 and the cover plate 19 is passed from a steam inlet 20 formed in a cover plate 19 forming the bottom surface of the cover 2. A steam outlet passage 22 communicating with a steam outlet 21 opened at a rear portion (in other words, slightly forward of the pivot portion) of the lid top plate 2a is formed. Here, the steam inlet 20 also serves as a content liquid outlet when the main body falls. A fall stop water valve 23 is provided on the inlet side of the steam outlet passage 22, and the communication hole 24 opened and closed by the fall stop water valve 23 is connected to the discharge port 18 when the air pump 15 is pressed. It is supposed to be able to communicate.

In the lower part of the side wall of the inner container 3,
A water purifier 25 for adsorbing and removing offensive odors, residual chlorine, organic substances, trihalomethanes, etc. in the content liquid W stored in the inner container 3 is detachably attached. The water purifier 25
Is configured by filling activated carbon C in a case 28 having openings 26 and 27 serving as inlets and outlets of the content liquid at the top and bottom,
A connection pipe 29 is connected to the bottom center of the case 28. In this example, as the activated carbon C, one having excellent heat resistance (for example, synthetic resin activated carbon obtained by baking Bakelite) is used. Reference numeral 30 is a mesh net for preventing the activated carbon C from flowing out.

The connecting pipe 29 is connected to the inner container 3
The water purifier 25 can be attached and detached by removably fitting the connection pipe 31 that is fixedly penetrated through the lower part of the side wall.

The connecting pipe 31 extends upward in the space between the side wall of the inner container 3 and the outer case 7, and the outlet 32a on the inner container 3 side is above the full water level Lmax in the inner container 3. Pipe for forced circulation 3
2 is connected, and a pumping pump 34 driven by a motor 33 is provided in the middle of the forced circulation pipe 32. That is, in this embodiment, the water purifier 2 is provided by the forced circulation pipe 32 and the pump pump 34.
The forced circulation means 35 is constructed so as to draw out the content liquid W that has passed through the inside of the container 5 and recirculate it back into the inner container 3.

In the case of the present embodiment, the pumping pump 34 is
Before the boiling of the content liquid W, a predetermined time t _{1 to} t ₂ (in other words, a time when the temperature of the content liquid W falls within a predetermined temperature range T _{1 to} T ₂ ) is to be operated (see FIG. 2). ). Here, T ₁ and T ₂ are set from experimental values, but T ₁ = 60
It is desirable that the temperature is T ₂ and T ₂ = 90 ° C. The reason for setting such an operation time is that there is a fact that the effect of removing free residual chlorine by the catalytic reaction of activated carbon C becomes active at high water temperature, and as a result, it is possible to suppress power consumption as much as possible. The maximum residual chlorine removing effect can be expected.

In this embodiment, the mounting positions of the water purifier 25 and the forced circulation pipe 32 are on the lower side wall of the inner container 3, but these mounting positions may be the bottom face of the inner container 3.

In the drawings, reference numeral 36 is a switch substrate, and 37 is an electric circuit storage box.

Next, the water purification action of the electric hot water storage container constructed as described above will be described.

The content liquid W is generated by the heating action of the electric heater 4.
When the temperature rises, natural convection occurs and the content liquid W passes from the lower opening 27 of the water purifier 25 to the upper opening 26 as indicated by the dotted arrow. At this time, the activated carbon C in the water purifier 25 comes into contact therewith, and the offensive odor, residual chlorine, organic matter, and trihalomethane in the content liquid W are adsorbed by the activated carbon C and removed. The water purification action by natural convection is actively performed until the content liquid W boils and enters the heat retaining state.

On the other hand, the pumping pump 34 in the forced circulation means 35 is started when the temperature of the content liquid W reaches T ₁ (for example, 60 ° C.), and the content liquid W is, as shown by the solid arrow, The water is sucked from the upper opening 26 of the water purifier 25, passes through the forced circulation pipe 32, and is recirculated into the inner container 3 from the outlet 32a which is located above the full liquid level Lmax of the content liquid W.
At this time, the offensive odor, residual chlorine, organic matter, and trihalomethane in the content liquid W come into contact with the activated carbon C in the water purifier 25 to activate the activated carbon C.
Are adsorbed on and removed. The water purification action by the forced circulation is performed only during the operation time t _{1 to} t _{2 of the} pump pump 34 (in other words, until the temperature of the content liquid W rises to T ₂ = 90 ° C.). By limiting the operation time of the pumping pump 34 in this way, it becomes possible to effectively utilize the water purification action in the temperature range in which the effect of removing the residual residual chlorine by the catalytic reaction of the activated carbon C is effectively utilized, and the power consumption is suppressed as much as possible and the maximum residual amount. The effect of chlorine removal can be expected. Moreover, in the case of this embodiment, the content liquid W is passed through the forced circulation pipe 32.
When the water is recirculated into the inner container 3 again, since it is recirculated from above the full level Lmax of the content liquid W, the recirculation liquid is constantly in contact with the air, and trihalomethane and the like are removed by the aeration effect. The effect is improved, and further water purification effect can be expected.

In this embodiment, the operating time of the pumping pump 34 is set to a predetermined time t _{1 to} t ₂ before boiling.
When corresponding to the inventions of 3 to 3, the operating time of the pumping pump 34 can be set to a timing and time as necessary.

In the present embodiment, the outlet of the forced circulation means 35 (specifically, the outlet 32a of the forced circulation pipe 32).
In order to improve the removal effect of trihalomethane and the like due to the aeration effect by exposing the above to a level higher than the full level Lmax of the content liquid W, in the case of corresponding to the inventions of claims 1, 3 and 4, the outlet of the forced circulation pipe 32. 32a can be made to face inward from the side wall or bottom surface of the inner container 3.

Embodiment 2 FIG. 3 shows an electric hot water storage container according to Embodiment 2 of the present invention. The present embodiment corresponds to the invention of claims 1 to 4.

In the case of this embodiment, the present invention is applied to an electric pump type electric hot water storage container. Therefore, in the electric hot water storage container of this embodiment, the air pump and the various mechanisms for operating the air pump are not provided in the lid body 2, and the liquid pouring passage 12 is discharged in the middle thereof. A pumping pump 38 for water supply is provided. Further, the connection pipe 31 into which the connection pipe 29 of the water purifier 25 is inserted is fixed through the bottom surface of the inner container 3 toward the side wall (that is, the position where the upward flow of the content liquid W is caused by natural convection). . Since other configurations are the same as those in the first embodiment, the description will be omitted to avoid duplication.

In the case of this embodiment, when the content liquid W is poured out, the point that the pumping pump 38 for pouring is operated is different from the first embodiment, and the water purifying action of the content liquid is the same as in the case of the first embodiment. The description is omitted.

Embodiment 3 FIGS. 4 to 6 show an electric hot water storage container according to Embodiment 3 of the present invention. The present embodiment corresponds to the inventions of claims 1 to 5.

In the case of the present embodiment, a pump capable of rotating in the forward and reverse directions is adopted as the pumping pump 34 constituting the forced circulation means 35, and the pumping pump 34 is used both for the content liquid pouring out and the forced circulation water purification. It is supposed to do.

As shown in FIG. 5, the pumping pump 34 of the present embodiment has a pump casing 39, an impeller 41 arranged in the pump casing 39 and rotationally driven by a reversible motor 40, and the pump casing. Communication passages 44 and 45 for communicating the two discharge ports 42 and 43 in 39 with the liquid pouring passage 12 side and the forced circulation pipe outlet 32a side, and the communication passages 44 and 45 are selectively opened and closed. And a switching valve 46 of a diaphragm type. In addition, the connection pipe 31 (that is, the forced circulation pipe 32) into which the connection pipe 29 of the water purifier 25 is inserted.
The inlet side 32b) of the pump casing 39 is communicated with a suction port 47 formed at a proper position of the pump casing 39. Code 4
8 and 49 are located in the middle of the communication passages 44 and 45, and the switching valve 4
A communication hole opened and closed by 6 and a spring 50 for urging the switching valve 46 toward the communication hole 49. That is, in the pumping pump 34 of the present embodiment, the switching valve 46 has the communication hole 49 or 48 with the rotation of the impeller 41 in the forward direction (that is, the arrow M direction) or in the reverse direction (that is, the arrow N direction). Alternatively, the content liquid W can be selectively discharged to the liquid pouring passage 12 side or the forced circulation pipe outlet 32a side.

The reversible motor 40 in this embodiment is shown in FIG.
The drive is controlled by an electric circuit connected as shown in FIG.

In FIG. 6, reference numeral 51 is a heat retaining heater, 5
2 is a triac for heat insulation, 53 is a diode, 54,5
5 is a capacitor, 56, 57 are Zener diodes, 58,
Reference numeral 59 is a transistor and 60 is a resistor.

In the above electric circuit, therefore, the circuit indicated by the symbol A is formed by turning on the transistor 58 (at this time, the transistor 59 is in the off state) to rotate the reversible motor 40 in the forward direction, and the pumping pump 34. From the liquid discharge passage 12 side, while the transistor 59
Is turned on (at this time, the transistor 58 is in an off state) to form a circuit indicated by a symbol B to reversely rotate the reversible motor 40 and discharge the water from the pump pump 34 to the forced circulation pipe outlet 32a side. ing. Since other configurations are the same as those in the second embodiment, the description will be omitted to avoid duplication.

In the case of the present embodiment, by rotating the pumping pump 34 forward and backward, it is possible to perform the content liquid pouring through the liquid pouring passage 12 or the forced circulation water purification through the forced circulation pipe 32. ing. Therefore, in the case of the present embodiment, the content liquid W passes through the water purifier 25 even when the liquid is poured out, and the water purifying action at that time can be expected. The other operations are similar to those of the second embodiment, and thus the description thereof is omitted.

Embodiment 4 FIG. 7 shows an electric hot water container according to Embodiment 4 of the present invention. The present embodiment corresponds to the inventions of claims 1 to 5.

Also in the case of this embodiment, the pumping pump 3
4 is used for both liquid pouring and forced circulation water purification, but the outlet 32a of the forced circulation pipe 32 is provided so as to penetrate the bottom surface of the inner container 3, and the purified water is supplied to the outlet 32a. The container 25 is detachably fitted, and the inlet 32b of the forced circulation pipe 32 is provided so as to penetrate the bottom surface of the inner container 3. And the pipe 32 for forced circulation
The outlet 32a side is connected to the discharge port 43 (see FIG. 6) of the pumping pump 34, while the inlet 32b of the forced circulation pipe 32 is connected to the suction port 47 (see FIG. 6) of the pumping pump 34.

With this configuration, during forced circulation, the content liquid W sucked from the inlet 32b of the forced circulation pipe 32 passes through the outlet 32a of the forced circulation pipe 32 and the water purifier 25 and the upper opening 26. Is returned to the inside of the inner container 3, and a water purifying action is obtained in the process. In addition, at the time of pouring the content liquid, the content liquid W sucked from the inlet 32b of the forced circulation pipe 32 is directly poured from the liquid pouring passage 12 without passing through the water purifier 25. Therefore, the flow resistance at the time of pouring the liquid is greatly reduced. Other configurations, functions and effects are the same as those of the second embodiment, and the description thereof will be omitted to avoid duplication.

FIG. 8 shows a modification of the water purifier used in the electric hot water storage containers according to the first to fourth embodiments.

The water purifier 25 shown in FIG.
A cylindrical body 6 extending up to the upper part of the case 28 and extending from the top plate 28a of the case 28 to slightly above the bottom plate 28b of the case 28 on the outer peripheral side of the connection pipe 29.
1 is provided. In this case, the upper opening 26 is formed at a position corresponding to the outside of the cylindrical body 61. By doing so, the content liquid W sucked from the upper opening 26 during the forced circulation meanders and flows as indicated by the solid line arrow, and the activated carbon C and the content liquid W are thus circulated.
The contact time with and the water purification will be improved.

FIG. 9 shows another modification of the water purifier used in the electric hot water storage containers according to the first to fourth embodiments.

The water purifier 25 shown in FIG. 9 has activated carbon C inside.
And the upper and lower openings 63, 6 for circulating the content liquid.
4, a water purifier main body 62 made of synthetic resin and a stainless steel storage case 65 for detachably storing the water purifier main body 62 are configured. On the outer periphery of the water purifier main body 62, a pair of elastic engagement pieces 6 which are opposite to each other.
6, 66 are integrally provided so as to project, and the elastic engaging pieces 66, 6
6 is an engagement hole 6 formed in the side wall of the storage case 65.
By elastically engaging 7,67, the water purifier body 6
2 is detachably stored in the storage case 65.

Further, the upper edge of the water purifier main body 62 and the upper edge of the storage case 65 are detachably connected via a locking ring 68 made of synthetic resin, and the locking ring 68 and the water purifier main body 62 are connected. A mesh net 69 for preventing the activated carbon C from falling off is sandwiched between the upper edge and the upper edge.

Further, at the lower end of the water purifier body 62,
A support plate 70 having the lower opening 64 is fixed, and a mesh net that prevents the activated carbon C from falling off between the support plate 70 and the inward ribs 71 formed at the lower end of the water purifier body 62. 69 is sandwiched.

The support plate 70 has a water purifier 25.
The inlet 32b (or the outlet 32) of the forced circulation pipe 32
A spring member 72 for detachably attaching to the connection pipe 31 which is a) is supported. The spring member 72 is made to project downward from a hole 73 formed in the center of the bottom of the storage case 65, and is wound at the lower end of the winding portion 7.
2a has a substantially U shape, and has horizontal fixing portions 72b, 7 fixed to the support plate 70 at its upper end.
2b is formed. The spring member 72 is inserted into the connecting pipe 31 while holding the expansion urging force, and is supported by the expansion urging force. At this time, the upper end of the connecting pipe 31 is fitted into the hole 73. An inflow hole 74 for the content liquid W is formed at the bottom of the storage case 65.

FIG. 10 shows another modification of the water purifier used in the electric hot water storage containers according to the first to fourth embodiments.

The water purifier 25 shown in FIG. 10 has substantially the same structure as the water purifier shown in FIG.
And a storage case 65 are engaged with each other and a stainless steel cap is provided.

That is, in this water purifier 25, the engagement protrusions 75, 75 projecting in opposite directions on the outer periphery of the water purifier main body 62 are integrally formed on the side wall of the storage case 65 so as to be annularly locked. By engaging the portion 76 from the lower side, the water purifier main body 62 is detachably stored in the storage case 65.

In the water purifier 25, the outer surface of the locking ring 68 engaged with the upper edge of the water purifier body 62 is covered with a stainless cap 77 to make most of the appearance of the water purifier 25. It is made of stainless steel. This improves the feeling of cleanliness. In this case, in order to prevent the cap 77 from rotating, as shown in FIG. 11, a cross-shaped reinforcing rib 78 is integrally formed on the inner peripheral surface side of the locking ring 68, and the cap 77 is attached to the reinforcing rib 78. The cut-and-raised pieces 79, 79 formed by cutting and raising a part of the above are held.

Embodiment 5 FIG. 12 shows an electric hot water container according to Embodiment 5 of the present invention. The present embodiment corresponds to the invention of claims 1 to 4.

The water purifier 25 of this embodiment is a container 80 composed of bottom-side and lid-side semi-containers 81, 82 which are connected to each other.
The bottom half container 8 is configured by filling activated carbon C inside.
While 1 is made of stainless steel which is a magnetic material, the lid side half container 82 is made of synthetic resin. And the lid side half container 8
An opening 83 that serves as an inlet / outlet for the content liquid W is formed in the device 2.

Further, the connection pipe 31 on the outer periphery of the side wall of the inner container 3 and on the inlet 32b side of the forced circulation pipe 32.
A permanent magnet 84 is attached to the outer periphery of the device while being sandwiched between the forced circulation pipe 32 and the side wall of the inner container 3. In the case of the present embodiment, the pumping pump 34 in the forced circulation means 35 is attached to the heat shield plate 6 via the bracket 85. The inner container 3 is made of stainless steel which is a magnetic material as described in the first embodiment. Reference numeral 87 is a mesh net.

With the above-described structure, the water purifier 25 can be attached by simply adsorbing the stainless steel bottom half container 81 to the inner surface of the inner container 3 where the permanent magnet 84 is attached. Removal is extremely easy. When the water purifier 25 is attached, the connection pipe 31 is fitted and inserted into the fitting insertion hole 86 formed in the central portion of the bottom half container 81.

Other configurations, functions and effects are the same as those of the first embodiment, and the description thereof will be omitted to avoid duplication.

Although the electric hot water storage container of this embodiment is of the manual pressurizing pump type, it may be of the electric pump type.

The invention of the present application is not limited to the configuration of each of the above-mentioned embodiments, and it goes without saying that the design can be appropriately changed without departing from the scope of the invention.

[Brief description of drawings]

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

FIG. 2 is a time chart showing a temperature change when the content liquid is heated in the electric hot water container according to the first embodiment of the present invention.

FIG. 3 is a vertical sectional view of an electric hot water storage container according to a second embodiment of the present invention.

FIG. 4 is a vertical sectional view of an electric hot water storage container according to a third embodiment of the present invention.

5 is an enlarged cross-sectional view of a pump for a hot water storage container according to a third embodiment of the present invention. FIG.

[Fig. 6] Fig. 6 is an electric circuit for controlling the operation of a water pump in an electric hot water storage container according to a third embodiment of the present invention.

FIG. 7 is a vertical sectional view of an electric hot water storage container according to a fourth embodiment of the present invention.

FIG. 8 is an enlarged cross-sectional view showing a modified example of the water purifier used for the electric hot water storage containers according to Examples 1 to 4 of the present invention.

FIG. 9 is an enlarged cross-sectional view showing another modified example of the water purifier used for the electric hot water storage containers according to Examples 1 to 4 of the present invention.

FIG. 10 is an enlarged cross-sectional view showing another modified example of the water purifier used for the electric hot water storage containers according to Examples 1 to 4 of the present invention.

11 is an exploded perspective view of essential parts of the water purifier shown in FIG.

FIG. 12 is a vertical sectional view of an electric hot water storage container according to a fifth embodiment of the present invention.

[Explanation of symbols]

1 is a container main body, 3 is an inner container, 4 is an electric heater, 12 is a liquid pouring passage, 15 is an air pump, 25 is a water purifier, 34
Is a pump for pumping, 35 is a forced circulation means, 38 is a pump for pumping out water, C is activated carbon, and W is a content liquid.

Claims (5)

[Claims] 1. An electric hot water storage container comprising a container body (1) having an inner container (3) configured to heat the content liquid (W) by an electric heater (4) provided on the bottom surface. In the inner container (3), when the content liquid (W) is naturally convected,
A water purifier (25) with a built-in activated carbon for purifying (W) is disposed in a dipped state, and the liquid content passed through the water purifier (25)
Pump out (W) via pump (34) and re-inner container
(3) An electric hot water storage container characterized by being provided with a forced circulation means (35) for returning the liquid to the inside. 2. The inner container side outlet (35a) of the forced circulation means (35) is exposed above the full level (Lmax) of the content liquid (W). Electric hot water storage container. 3. The electric hot water container according to claim 1 or 2, wherein the water purifier (25) is removable. 4. The electric hot water storage container according to claim 1, 2 or 3, wherein the operating time of the pumping pump (34) is set to a predetermined time before boiling of the content liquid (W). 5. The pump according to claim 1, 2, 3 or 4, wherein the pumping pump (34) can be rotated normally and reversely so as to be used both for the content liquid pouring out and for the forced circulation water purification. Electric hot water storage container.