JPH0793907B2 - Circulation purification type 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 a circulation purifying type electric hot water storage container, and more particularly to a circulation purifying type electric hot water storage container capable of purifying and storing hot water while circulating a content liquid.

[0002]

2. Description of the Related Art Conventionally, electric hot water storage containers have been widely provided as household electric pots.

[0003] This product keeps the content liquid in a heat-retaining state, or keeps it in a heat-retaining state after boiling water and stores hot water, so that the content liquid at a temperature necessary for extracting coffee or tea can be supplied at any time.

The content liquid is heated for the purpose of boiling or keeping it warm, and in particular, when heated for boiling water, the content liquid is brought into a boiling state to cause an offensive odor, or calcination or its compound, trihalomethane. Foreign matter is released.

[0005]

However, the foreign matter is not sufficiently diffused only by the heat retention or the heating for boiling water.

Therefore, it has been considered to enhance the effect of removing chlorine by continuing the boiling state for a predetermined period of time or repeating the boiling state appropriately.

However, even if this is the case, the diffused scaly component is difficult to escape to the outside of the body, adheres around the body inside the body, etc., and there is a dislike that the adhered scaly is returned to the content liquid again. Is still insufficient. On the other hand, in Japanese Patent Laid-Open No. 2-36820, activated carbon is provided in the pouring path of the content liquid to purify it at the time of pouring, or activated carbon is provided in the middle of the subjective boiling path connected to the vessel to purify in the boiling process. It discloses things. However, at the time of pouring, the purification is performed only once through the activated carbon, and the purification in the instantaneous boiling route is performed only during the instantaneous boiling, so the purification cannot be said to be sufficient. In the latter case, the passage structure becomes complicated because both the purification by the instantaneous boiling and the pouring path are required separately.

In view of the above, the present invention focuses on the spout passage and the pump provided in this kind of electric hot water storage container, and allows the content liquid to pass through the purifying agent while being circulated by the pump and a part of the spout passage as necessary. Accordingly, it is an object of the present invention to provide a circulation purification type electric hot water storage container capable of sufficiently removing foreign substances such as offensive odors and chyle without affecting the pouring of the content liquid.

[0009]

In order to achieve the above-mentioned object, the first invention of the present application switches a discharge channel for guiding the content liquid in the body to a discharge port outside the body and switching from the middle of the discharge channel. A circulation path that branches through a valve and communicates with the inside of the body, and a pump that pours the content liquid out of the body according to the switching state of the switching valve through the pouring path and the circulation path, and also returns it into the body,
When a purifier is provided to purify the content liquid circulated in a part of the circulation path with a purifying agent, and falls to a position higher than the switching valve and the purifier on the discharge side of the circulation path branch point of the pouring path. It is characterized by the provision of a water shutoff valve.

In order to achieve the above-mentioned object, the second invention of the present application switches between a pouring path for guiding the content liquid in the inner container housed in the outer casing of the vessel to the outside of the vessel and a middle of the pouring channel. It is equipped with a circulation path that branches through a valve and leads to the inside of the inner container, and a pump that pours the content liquid out of the inner container and returns it into the inner container according to the switching state of the switching valve through these pouring path and circulation path. A purifier for purifying the content liquid circulated in a part of the circulation path with a purifying agent is provided, and the purifier is located between the exterior body and the inner container. .

In order to achieve the above-mentioned object, the third invention of the present application is, in each of the above inventions, further provided with a purification display portion for displaying that the switching valve is in the purification mode in which the switching valve is switched to the circulation path side. It is provided in.

[0012]

According to the above configuration of the first invention of the present application, the content liquid is discharged to the outside of the vessel through the pouring path under the cooperation of the pump by switching the switching valve at the branch point between the pouring path and the circulation path. It is possible to dispense with a simple passage structure and to circulate by returning the content liquid to the inside of the body again after guiding it to the outside of the body through a part of the pouring path and the circulation path. Since the circulating content liquid has a purifier so as to pass through the purifying agent and purifies it, the content liquid is circulated as necessary to repeatedly perform forced purification for a necessary time, After being sufficiently purified in this way, the content liquid can be poured out at a proper time and used. A water stop valve at the time of fall is installed in the spout passage at a position closer to the discharge port than the branch point of the circulation path and higher than the purification section where the switching valve and the purifier are installed. Since the content liquid does not flow out from any part of the purification valve, depending on the accuracy of the switching valve or the switching state, even if the purification unit is through the spout passage, it is possible to prevent the content liquid from flowing out from this purification unit. You can

According to the above configuration of the second invention of the present application,
In addition to performing the same forced purification as in the invention of the above, since the purifier is provided between the exterior body of the vessel and the inner container, the purifier projects inside the exterior body and inside the vessel while the purifier is in the vessel. Without doing so, it does not disturb the cleaning of the exterior body and the inside of the container, and does not give a feeling of strangeness inside and outside the body.

According to the above configuration of the third invention of the present application, in any one of the first and second inventions, a display portion is provided on the body for indicating that the switching valve is in the purification mode in which the switching valve is switched to the circulation path side. By doing so, it is possible to clearly indicate to the user the state of forced circulation purification and prevent erroneous operation and misuse.

[0015]

EXAMPLE A first example of the present invention shown in FIGS. 1 to 4 will be described. This embodiment shows the case of an electric pot capable of boiling water and pouring out the content liquid by a non-pressurized type electric pump. As shown in FIG. 1, an inner container 2 in which a heater 1 is applied to the bottom side peripheral surface is housed in an outer case 3 to form a body 4. Inner container 2 is outer case 3
The upper end flange is received by a shoulder member 5 made of synthetic resin which is forcibly fitted to the upper end of the.

A bottom ring 6 made of synthetic resin is applied to the lower end of the outer case 3, and the bottom ring 6 and the bottom of the inner container 2 are connected by a connecting fitting (not shown) to form the outer case 3 and the inner container 2. And the bottom ring 6 are integrated with each other. A bottom lid 9 having a circuit box 8 on the bottom ring 6 via a metal fitting 7.
Is fixed, and the rotary seat body 11 is rotatably sandwiched between the outer periphery of the bottom lid 9 and the bottom ring 6. This makes the body 4
The body 4 slides and rotates on the rotary seat body 11 when the container is placed.

A pouring path 12 for pouring out the content liquid is connected to the bottom of the inner container 2. The pouring path 12 is a space between the inner container 2 and the outer case 3, and rises up to the inside of the beak-shaped protrusion 13 provided at the front portion of the shoulder member 5, and bends in an inverted U shape at this portion. The discharge port 14 opens downward.
An electric electric pouring pump 15 for sending the content liquid flowing into the pouring path 12 to the discharge port 14 is provided in a portion of the pouring path 12 below the inner container 2, and is driven by a motor. There is.

A liquid injection guide 17 is attached to a lower cover 16 which is attached to the lower side of the beak-like protrusion 13 and is attached to the front part of the outer case 3.
, And the content liquid discharged from the discharge port 14 is once opened to the atmosphere and then received by the liquid injection guide 17 to be guided and injected.

A temperature sensor 21 for detecting the temperature of the content liquid is provided at the back of the inner container 2 and supplies temperature information of the content liquid to a control circuit 22 housed in the circuit box 8. As a result, the control circuit 22 controls energization of the heater 1 so as to keep the content liquid at a predetermined temperature.

A body lid 31 is provided on the upper end of the body 4. The body lid 31 has a hinge pin 33 on a bearing portion 32 provided at a rear portion thereof so as to partially open inside the shoulder member 5.
It is pivotally attached so that it can be opened and closed and removed. The body lid 31 can be attached and detached by opening the body lid 31 so that the hinge pin 33 integrated with the body lid 31 can be inserted and removed from the opening of the bearing portion 32. Therefore, it is possible to prevent the body lid 31 from being unintentionally detached when the body lid 31 is in the closed state.

A lock member 34 is provided at the front end of the body lid 31, and when the body lid 31 is closed, the lock member 34 is elastically engaged with a not-shown locking portion provided on a part of the shoulder member 5 so that the container lid 31 is locked. The body lid 31 is locked in the closed state. The lock member 34 is pushed from the outside against a spring (not shown) exerted on the lock member 34, so that the lock member 34 is disengaged from the lock portion and the lock of the detachable body lid 31 is released.

An inner lid 36 made of a metal plate is attached to the inside of the back plate 35 of the container lid 31, and is attached by screws 37. A seal packing 38 is provided on the outer periphery of the inner lid 36.
Is attached, and this comes into contact with the rear portion of the inner container 2 and
I'm trying to close.

A steam passage 39 is provided between the inner lid 36 and the back plate 35 of the body lid 31 to allow the steam generated in the inner container 2 to escape to the outside. The abnormal pressure rise is avoided.

In the middle of the steam passage 39, water shut-off valves 41, 42 at the time of fall are provided to prevent the content liquid from flowing out through the steam passage 39 at the time of fall.

A steam sensor 43, which faces the steam passage 39 and detects the temperature of the steam, is provided at the rear of the shoulder member 5 of the body 4.
Is provided for supplying the temperature of the steam discharged through the steam passage 39 to the control circuit 22.

As a result, the control circuit 22 determines whether or not the content liquid has boiled depending on the vapor temperature, and controls the continuation and stop of the boiling operation of the content liquid.

In the base of the beak-like protrusion 13 of the shoulder member 5, there is provided a switch 44 for operating the electric dispensing pump 15.

The switch 44 is provided in the body lid 31.
The switch operating member 45 for pushing the
a is provided on a part of the front plate 46 of the body lid 31 so as to be vertically movable, and is pushed by the operation portion 45b facing the opening 48 of the operation portion cover 47 fitted to the front portion of the front plate 46. It is designed to be operated.

The switch operating member 45 is urged upward by a spring 49 acting between each leg portion 45a and the front plate 46, and when the operating portion 45b is pushed, the switch operating member 45 is moved downward against the spring 49. The one leg 45a pushes the switch 44 to turn it on.

The switch operating member 45 includes a lock member 51.
Is working. The lock member 51 is the opening 5 of the front plate 46.
2 is exposed to the operating portion 51a, and the operating portion 51a slides to engage the locking portion 51b with the switch operating member 4
5 is located below the operating portion 45b or is removed from the lower portion of the operating portion 45b to block the operation of the switch operating member 45 or release the block.

A fall stop water valve 61 is provided immediately below the inverted U-shaped bent portion of the pouring path 12, and a portion immediately below the portion where the fall stop water valve 61 is provided. A circulation path 62 for returning the content liquid into the inner container 2 is branched and connected via a switching valve 63. In the middle of the circulation path 62, a purifier 64 containing a filter medium 64a such as activated carbon is provided on the peripheral wall of the inner container 2 along the outer surface thereof.

The purifying portion provided with the switching valve 63 and the purifier 64 is shown in detail in FIGS. 2 and 3, but the water stop valve 61 at the time of tipping is higher than the above because of the passage structure. There is. As shown in FIG. 4, the switching valve 63 has an operating knob 65 for manual operation outside the body 4, and the operating knob 6
5, each state shown by a solid line and an imaginary line in FIG.
And the intermediate state between them.

In the state of the phantom line in FIG. 2, the content liquid sent out by the electric pouring pump 15 from the pouring path 12 is not allowed to flow into the circulation path 62, and the whole amount is the discharge port 1 of the pouring path 12.
I will guide you to flow to 4.

In the state shown by the solid line in FIG. 2, the content liquid sent out from the pouring path 12 by the electric pouring pump 15 is made to flow to the discharge port 14 side of the pouring path 12 and the circulation path 62 side. To do. Then, the pouring flow rate of the content liquid can be adjusted by adjusting the ratio of the flow rates flowing to both sides.

The content liquid introduced to the circulation path 62 is the purifier 6.
It is returned to the inside of the inner container 2 through 4 and is purified by the filter medium 64a. Therefore, while the content liquid is being poured out, the content liquid can be purified by circulating it part by part.

In the state shown in FIG. 3, all of the content liquid sent out by the electric pouring pump 15 is made to flow to the circulation path 62 side in the pouring path 12, so that the content liquid is circulated and purified. You can

In short, according to the above-mentioned configuration of this embodiment, the pouring path 12 and the circulation path 62 have the switching valve 6 at the branch point.
With the cooperation of the pump 15, the content liquid is poured out of the vessel body 4 through the pouring path 12 by switching 3 and the pouring path 1
It is possible to achieve, with a simple passage structure, to guide the content liquid through the part of 2 and the circulation path 62 to the outside of the container 4 and then to circulate it again, especially in a part of the circulation path 62. Has a purifier 64 so that the circulated content liquid passes through the filter medium 64a to purify it, so that the content liquid is circulated for a necessary time as required, and thus repeated for a necessary time. The content liquid after forced purification and sufficiently purified in this way can be poured out at a suitable time and used. The spout 12 has a discharge port 14 rather than a branch point of the circulation path 62.
On the side, and at a position higher than the purification unit where the switching valve 63 and the purifier 64 are provided, the water shutoff valve 61 at the time of fall is provided,
Since the content liquid from any portion communicating with the spout passage 12 is not poured below this, even if the purifying unit passes through the spout passage 12 depending on the accuracy of the switching valve 63 or the switching state,
It is possible to reliably prevent the content liquid from flowing out from the purification unit.

Further, since the purifier 64 is provided between the outer case 3 as the outer body of the body 4 and the inner container 2, the purifier 64 is located in the body 4 outside the outer case 3 and in the inner container. 2 does not protrude into the outer case 3 and the outer case 3 and the inner container 2
It does not hinder the cleaning of the inside, and does not give an uncomfortable feeling to the inside or outside of the inner container 2.

In addition, since the switching valve 63 can be manually switched by the operation knob 65 as an operating portion outside the body 4, it is possible to easily and appropriately select the pouring of the content liquid and the forced circulation purification as required. Can be executed.

In the second embodiment of the present invention shown in FIG. 5, a switching valve 71 different from that of the first embodiment is provided in the portion of the pouring path 12 where the circulation path 62 branches. The switching valve 71 is of a slide type, and has an opening 72b that communicates with the valve case 72 through the circulation path 72a to the discharge port side of the pouring path 12, and the circulation path 6
2 has an opening 72c communicating with the side, and the openings 72b, 7
2c can be opened and closed alternately by sliding the valve body 72d in the valve case 72.

The valve 72 is attached to the coil 72e.
The spring 72f which makes d follow is operated.

The coil 72e is usually in a state where the temperature is lower than a predetermined temperature and is in an extended state, and the valve body 72d is pushed toward the opening 72b to close the opening 72b and the opening 72c as shown in the figure.
It is in a state to open it apart from. Therefore, the pouring path 12 is connected to the circulating path 62 via the circulating path 72a, and the content liquid sent out by the electric pouring pump 15 from the pouring path 12 is returned into the inner container 2.

At this time, if the content liquid is at a predetermined temperature or lower, the coil 72e maintains its extended state even if it comes into contact with the coil 72e, so that the content liquid is continuously circulated and purified every time it passes through the purification chamber 64.

When the content liquid reaches or exceeds a predetermined temperature, the coil 72e contracts when it touches the coil 72e. As a result, the valve body 72d is caused to follow the contracted coil 72e by the spring 72f, moved toward the opening 72c, and separated from the opening 72b.

Therefore, the opening 72b is opened and the opening 72c is opened.
Is closed, the content liquid sent out from the pouring path 12 by the electric pouring pump 15 flows to the discharge port side of the pouring path 12 through the circulation path 72a and is poured out. And it is prevented from flowing to the side of the circulation path 62.

In short, the content liquid is circulated and purified at a temperature equal to or lower than the predetermined temperature, and the entire content liquid is efficiently and uniformly heated. Then, when the temperature becomes equal to or higher than a predetermined temperature, pouring is possible.

Due to such a constitution, in the present embodiment, when the content liquid is heated at a predetermined temperature or lower, the electric pouring pump 15 is automatically turned on.
Purification of the content liquid at the same time as boiling water is automatically achieved.

The third embodiment of the present invention shown in FIGS. 6 and 7 shows another switching valve 81. The switching valve 81 of the present embodiment is located at a pouring position where the liquid content sent out by the electric pouring pump 15 from the pouring path 12 is made to flow to the discharge port side of the pouring path 12 or a circulation position to make it flow to the circulation path 62 side. Although it is a simple one, the operation lever 83 for switching the valve body 82 is provided with switch operation portions 83a and 83b, and when the operation lever 83 is in the pouring position and the circulating position, the switch 44 is turned on, At the same time as the setting of the pouring and circulation purification, the electric pouring pump 15 is automatically turned on, and the pouring of the content liquid according to the setting or the purifying while circulating the content liquid is automatically executed. .

The fourth embodiment of the present invention shown in FIGS. 8 to 11 shows a case of an electric pot different from the first embodiment.

Regarding the electric pot of this embodiment, the difference from the case of the first embodiment will be described. As shown in FIG. 8, the heater 1 is applied to the lower surface of the bottom of the inner container 2, and the inner container 2 is surrounded by the heater 1. It is brought into close contact with the bottom of the inner container 2 by the pressing of the spring 103 that works between the heat shield plate 102 and the heat shield plate 102 attached to the bottom of the inner container 2.

A bottom ring 104 made of synthetic resin is applied to the lower end of the outer case 3, and the bottom ring 104 and the bottom portion of the inner container 2 are connected by a connecting metal fitting (not shown). The bottom rings 104 are integrated with each other. A bottom lid 105 is attached to the opening of the bottom ring 104 by fitting a plurality of claws and screwing at one place.
The rotary seat body 106 is rotatably fitted to the outer peripheral portion of the lower surface of 05 by a plurality of claws provided on the bottom surface of the base body 05.
The body 4 slides and rotates on the rotary seat body 106 when is fixed.

A liquid injection guide 17 for guiding the content liquid poured out from the discharge port 14 of the pouring path 12 is a beak-like protrusion 13.
It is integrally formed with the lower cover 16.

The rising portion of the pouring path 12 is the inner container 2
A liquid amount detection unit 107 is provided for detecting the liquid amount by the electrostatic capacity method or the photo sensor method by using the same liquid level.

The electric pouring pump 15 is attached using a part of the heat shield plate 102.

Further, a temperature sensor 108 for detecting the temperature of the content liquid is provided in the through hole at the center of the heater 1, and the heat shield wall 10 is provided.
It is isolated from the heater 1 by 9. As a result, the heat of the heater 1 is prevented from directly affecting the temperature sensor 108, and the heat retention control and the water boiling control are accurately performed.

A circuit box 112 for accommodating the control circuit 111 is integrally formed on the bottom ring 104.

The body lid 31 on the upper end of the body 4 is pivotally attached by a hinge pin 33 to the bearing member 113 which is detachably fitted to the shoulder member 5 at the rear portion thereof.
By attaching and detaching 13, the body lid 31 can be attached to and detached from the body 4.

The bearing member 113 is inserted into the recess 114 of the shoulder member 5 from above, and the spring 116 is operated around the hinge pin 33 so as to urge the locking lid 115 in the recess 114 in the opening direction. Due to the elastic engagement of the one end 116a, accidental disengagement is prevented.

In the body lid 31 biased in the opening direction, the lock member 117 provided at the front end portion is engaged with the locking portion 119 provided at a part of the shoulder member 5 by the biasing force of the spring 118. Locked closed.

The lock member 117 is a back plate 35 of the body lid 31.
The forward and backward movement is guided by the protrusion 121 formed on the upper surface of the.

On the inclined surface 117a of the lock member 117, the projection 12 at the tip of the lock release lever 124 pivotally attached to the bearing 122 in the body lid 31 by the shaft 123 at the rear portion.
4a is in contact. When the lock member 117 is advanced to the engagement position by the spring 118, the lock release lever 124 is pushed upward by the slope 117a through the projection 124a, and the operation portion 124b at the tip end is a body. From the top opening 126 of the lid 31, the body lid 3
It is exposed so that it is flush with the surface of 1.

When the operating portion 124b is pushed down in this state, the lock release lever 124 is rotated counterclockwise to push the slope 117a of the lock member 117 by the projection 124a, and the lock member 117 is retracted against the spring 118. Then, the engagement with the locking portion 119 is released. Therefore, the body lid 3
The lock of 1 in the closed state is released. At the time of completion of this lock release, there is a play in the unlocking direction between the lock release lever 124 and the body lid 31, and the body lid 31 is released from the pressing operation of the lock release lever 124. It is slightly rotated in the opening direction by the spring 118 regardless of whether it is performed or not.

As a result, the lock member 117 is slightly displaced upward from the position of the locking portion 119, so that the lock member 117 is again moved to the locking portion 119 by a natural operation of releasing the hand from the operating portion 124b when releasing the lock. The body lid 31 is automatically opened to the fully opened state by the spring 116 without any engagement.

The safety member 12 is attached to the lock release lever 124.
7 are working. The safety member 127 is supported by the body lid 31 so as to be slidable in the longitudinal direction of the lock release lever 124. When the operating portion 127a is slid, the locking portion 127b is locked.
When the lock release lever 124 is advanced or retracted under the tip of the lock lever 24 to enter the bottom of the lock 24, the lock release lever 124 is prevented from moving downward so that the lock is not accidentally released.

The control circuit 111 uses a microcomputer 131. Pouring operation key 2 provided on operation panel 201 provided on the upper surface of beak-shaped protrusion 13
The pressure sensor 203 is provided so as to press the pressure sensor 203. The pressure sensor 203 converts the difference in the pressing force during the pouring operation into an electric signal, and the microcomputer 13
By inputting 1 (Fig. 3), the electric pouring pump 15
The drive voltage is switched to control the pouring flow rate.

Further, the electric pouring pump 15 of the pouring path 12
In the portion between the liquid volume detection unit 107 and the liquid content detection unit 107,
The circulation path 62 returning to the inside is branched and connected via the switching valve 204. The circulation path 62 extends under the bottom of the inner container 2 to the rear side of the body 4, where the space between the inner container 2 and the outer case 3 rises and is connected to the upper part of the inner container 2. There is. And a purification chamber 64 is located slightly downstream of this connection.
Is provided.

The changeover valve 204 switches whether the content liquid sent out from the pouring path 12 by the electric pouring pump 15 is guided to the discharge port 14 side or the circulation path 62 side.

As a result, the content liquid can be made to flow from the pouring path 12 to the discharge port 14 and can be poured out in accordance with the switching operation of the switching valve 204, and also from the pouring path 12 to the circulation path 6.
2 can be made to flow in and it can be returned in the inner container 2.

The flow of the content liquid flowing from the pouring path 12 to the circulation path 62 and returned to the inner container 2 is such that the content liquid is circulated for a predetermined time by repeating this and is repeatedly purified through the purifier 64. You can

The switching valve 204 can be connected to an operating lever or the like located outside the body 4 so that it can be manually operated from the outside.
It is convenient to automatically switch the inner solution to the discharge port 14 side by the pouring operation of 5 and to switch the other so that the content liquid flows to the circulation path 62 side.

In this case, the electric pouring pump 15 has the switching valve 2
04 is switched to the circulation path 62 side at an appropriate time during non-pouring, for example, while boiling the content liquid or while continuing boiling for removing scaly, or at a certain time during heat retention or at predetermined time intervals. Purification by circulation can be performed.

Further, when the content liquid is at the lower limit water level, the purification operation by circulating the content liquid as described above is not necessary. Therefore, when such a water level is detected by the liquid amount detection unit 107. It is preferable to control so that the circulation purification process of the content liquid is not performed.

The operation panel 201 is as shown in FIG. 9 , and in addition to the pouring operation key 202, the reboiling / scalping removal setting key 205, the timer setting key 206, the liquid volume display portion 207, the boiling / scaling removal, Insulation display units 208-2
10. Display units 211 to 213 for the timer set time are provided. Further, when the content liquid is in the boiling state or before and after it, or when the liquid level of the content liquid is below the lower limit of the pouring, pouring when controlling so as to prevent the pouring or the circulation purification process. , The pouring lock display section 215 of the circulation purification process,
It is provided with a pouring lock / release key 214 for temporarily locking or unlocking the pouring. Moreover, the purified water display part 21 which displays that it is in the purified water state.
6 is also provided. Further, the electromagnetic switching valve 204 is also connected to the microcomputer 131 to receive the above control.

In the present embodiment, in particular, since the purification display portion 216 for indicating that the switching valve 204 is in the purification mode in which the switching valve 204 is switched to the circulation path 62 side is provided outside the body 4, the circulation forced purification state is set by the user. It is possible to avoid mistaken operation and misuse.

The re-boiling / scalping removal setting key 205 and the pouring lock / release key 214 are set so that the setting mode is changed to a rotary type each time they are operated.

FIG. 10 shows a control circuit. In the microcomputer 131, as shown in the figure, the electric and electronic parts related to the various inputs and outputs are A / D converters 301 and 302, a switch circuit 303, a drive circuit 304, a display circuit. It is properly connected via 305.

FIG. 11 shows a flow chart in the case of a boiling process in which water is automatically purified before boiling in this embodiment.

This will be described. In step # 1, if the temperature of the content liquid is lower than the heat retention lower limit temperature, for example, 85 ° C., the process returns to the main routine. This is equivalent to the case where the temperature is low, and it is determined that the boiling water operation is necessary, and the processing of step # 2 and thereafter is performed. First, after switching the switching valve 204 to the purified water side, the electric pouring pump 15 and the purified water display section 216 are turned on (steps # 2 to #).
4).

As a result, the content liquid is the electric pouring pump 15
By repeatedly through the circulation path 62 circulates from the pouring outlet 12 is repeatedly purified by passing through an intermediate clarifier 64. This state is displayed when the purified water display unit 216 is turned on.

After 3 minutes have passed in this purified water state (step # 5), since the content liquid is sufficiently purified, the electric pouring pump 15 is turned off, the water purification display is turned off, and the circulation of the content liquid is stopped to perform the water purification treatment. Stop (Steps # 7, #
8).

Next, the switching valve 204 is switched to the pouring side, and when the pouring operation is performed, the content liquid can be poured out (step # 8), and the heater 1 is turned on in the boiling water operation state to boil. The operation is performed, and the boiling display 208 is turned on to display that effect (steps # 9, # 10).

When the end of boiling is confirmed by the temperature information from the temperature sensor 108 (step # 11), the boiling water operation of the heater 1 is turned off, and the boiling display is turned off to end the boiling operation and return to the main routine. (Steps # 11 to # 13).

12 and 13 show a fifth embodiment of the present invention. As shown in FIG. 12, a water purification key 321 is provided on the operation panel 201 to provide a control circuit microcomputer 131.
By operating the water purification key 321 by connecting to the water purifying device, water purification processing can be performed as necessary during the initial boiling operation. It should be noted that similar processing can be performed during reboiling.

Specifically, when the content liquid has already been purified or does not need to be purified, if the cleaning key 321 is used without being operated, the boiling operation is performed without water purification (step # 20, # 21, # 28 to # 3
3) If the water purification treatment is required and the purification key 321 is operated and used, the boiling operation is performed after the water purification treatment (steps # 20 to # 33).

FIG. 14 shows a sixth embodiment of the present invention, in which water is purified only when the water purification key 321 is turned on after the initial boiling operation. The water purification process after boiling is efficient and easy to purify the content liquid.

Specifically, when the content liquid is at or below a predetermined temperature, the normal boiling water operation is performed, and at the same time, the driving of the electric pouring pump 15 is electrically blocked to prevent pouring. The locked state is displayed by turning on the dispensing lock display 215 (steps # 41 to # 45).

When the boiling is completed, the heater 1 is turned on to keep it warm so that the temperature of the content liquid does not drop rapidly and the boiling display is turned off (step # 46).
~ # 48). Next, if the water purification key 321 is turned on,
The switching valve 204 is switched to the purified water side, the drive blocking of the electric pouring pump 15 is released, the electric pouring pump 15 is turned on to perform the purifying treatment, and the purifying water display is turned on (step #
49-52).

When the water purification treatment is carried out for 3 minutes, the electric pouring pump 15 is turned off to end the water purification treatment, and the water purification display is turned off. Then, the switching valve 204 is switched to the pouring side to enable pouring, and the pouring lock display is turned off (steps # 56 and # 5).
7).

In the above embodiment, the circulation path 62 is branched from the pouring path 12, but the branching position may be at any portion, and in some cases, it may be provided independently of the pouring path 12. In this case, if necessary, a pump for circulation purification treatment can be provided separately from the pump for pouring.

Further, the pump is not limited to an electric pump, and a manual pump may be adopted.

FIG. 15 shows a seventh embodiment of the present invention, in which the case 330 of the purifier 64 is forcibly fitted from the outside into the opening 332 of the outer case 3 of the body 4, and the purifying agent inlet / outlet port 64b of the case 330 is inserted. The cleaning agent cartridge 64c can be directly put in and taken out from the outside of the processing body 4 by opening the cleaning agent cartridge 64c on the outer surface of the cleaning agent cartridge 64c, which is convenient for cleaning and replacement of the cleaning agent cartridge 64c. The purifying agent inlet / outlet port 64b is fitted with a lid 331 which is attached and detached by elastic engagement, but the lid structure for opening and closing the purifying agent inlet / outlet port 64b can take various forms. The purifier 64 of this embodiment is similar to that of the first embodiment in that it does not project into the inner container 2, but it is slightly bulged on the outer surface of the container 4, but it is arranged along the peripheral wall of the container 4. There is no difference in that it is provided, and it does not particularly disturb the cleaning of the outer surface of the body 4 and does not give a feeling of strangeness.

[0092]

According to the first invention of the present application, the pouring path and the circulation path are poured into the outside of the body through the pouring path under the cooperation of the pump by switching the switching valve at the branch point. It is possible to guide the content liquid to the outside of the body once through a part of the pouring path and the circulation path, and then to return it to the body and circulate it again.
This can be achieved by a simple passage structure, and in particular, a purifier is provided in a part of the circulation path to purify the circulating content liquid so that it passes through the purifying agent. It can be strengthened repeatedly for a necessary time by circulating it. A water stop valve at the time of fall is installed in the spout passage at a position closer to the discharge port than the branch point of the circulation path and higher than the purification section where the switching valve and the purifier are installed. Since the content liquid does not flow out from any part of the purification valve, depending on the accuracy of the switching valve or the switching state, even if the purification unit is through the spout passage, it is possible to prevent the content liquid from flowing out from this purification unit. You can

In addition to the forced cleaning similar to the second and first inventions of the present application, since the purifier is provided between the outer body of the container and the inner container, the purifier is installed in the container. However, it does not project outside the outer body and the inner container, does not interfere with cleaning of the outer body and the inner container, and does not give an uncomfortable feeling inside and outside the body.

According to the third invention of the present application, in any one of the first and second inventions, when the display unit for displaying the purification mode in which the switching valve is switched to the circulation path side is provided on the body, It is possible to clearly indicate to the user the state of forced purification to avoid erroneous operation or misuse.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an electric pot showing a first embodiment of the present invention.

FIG. 2 is a partial cross-sectional view showing a state in which the electric pot shown in FIG. 1 is poured out, a switching valve for selecting circulation is partially discharged, and partially circulated.

FIG. 3 is a partial cross-sectional view showing a circulating state of the switching valve of FIG.

FIG. 4 is a side view of the upper portion of the body showing the operation portion of the switching valve of FIG.

FIG. 5 is a sectional view of a switching valve showing a second embodiment of the present invention.

FIG. 6 is a perspective view of a switching valve showing a third embodiment of the present invention.

7 is a cross-sectional view of the switching valve of FIG.

FIG. 8 is a sectional view of an electric pot showing a fourth embodiment of the present invention.

9 is a plan view of an operation panel of the electric pot of FIG.

10 is a block diagram of a control circuit of the electric pot of FIG.

11 is a flowchart of a subroutine showing a specific example of boiling processing by the control circuit of FIG.

FIG. 12 is a plan view of an operation panel showing a fifth embodiment of the present invention.

FIG. 13 is a flowchart of a subroutine showing a specific example of boiling processing in the fifth embodiment.

FIG. 14 is a flowchart of a subroutine showing a specific example of the boiling process showing the sixth embodiment of the present invention.

FIG. 15 is a sectional view of a purification unit showing a seventh embodiment of the present invention.

[Explanation of symbols]

 4 body 12 pouring path 14 discharge port 15 pouring pump 61 water stop valve at fall 62 circulation path 63, 71, 81, 204 switching valve 64 purifying chamber 64a purifying agent 64b opening 64c purifying agent cartridge 331 lid 65, 83 operation part

Claims (3)

[Claims] 1. A pouring path for guiding the content liquid in the body to a discharge port outside the body, a circulation path branching from the middle of the pouring path through a switching valve and communicating with the body, and through the pouring path and the circulation path. A purifier for pouring the content liquid to the outside of the body according to the switching state of the switching valve and for returning it to the body is provided with a purifier for purifying the content liquid circulated in a part of the circulation path with a purifying agent, A circulating purification type electric hot water storage container, characterized in that a water shutoff valve is provided at a position higher than the switching valve and the purifier on the discharge port side of the circulation path branch point of the pouring path. 2. A pouring path for guiding the content liquid in the inner container housed in the exterior body of the vessel to the outside of the body, and a circulation path branching from the midway of the pouring path through a switching valve to reach the inner vessel. A pump for pouring the content liquid through the pouring path and the circulation path to the outside of the inner container according to the switching state of the switching valve and returning it into the inner container is provided, and the content liquid circulated in a part of the circulation path is purified. A circulating purifying type electric hot water storage container characterized in that a purifier for purifying with an agent is provided, and the purifier is located between the exterior body and the inner container. 3. A circulation purification type electric hot water storage container according to claim 1 , further comprising a purification display portion provided on the outer surface of the body for indicating that the switching valve is in the purification mode for switching to the circulation path side. .