JPH0713612Y2 - Electric hot water storage container - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric hot water storage container provided with a heater for heating a content liquid around an inner container housed in a container, and is used for household electric pots and the like. .

[0002]

2. Description of the Related Art An electric hot water storage container of this type is known in which a heater for boiling water and a heater for keeping heat are used in combination.

Both of these heaters are assembled as one heater and are provided either at one side surface of the bottom of the inner container or at one place of the bottom surface of the bottom of the inner container. ing.

Therefore, even if there are a plurality of heaters, the labor for mounting can be simplified as in the case of one heater.

Further, since it has a heater for boiling water, by using this heater alone or together with the heater for keeping warm, it is possible to heat by a heater having a larger capacity than that at the time of keeping warm, and that much. The time required for boiling the content liquid can be shortened.

[0006]

However, it takes a long time to boil water from room temperature. This is not a problem when the user sets the timer to heat the content liquid while sleeping or going out so that the boiling content liquid can be obtained at a necessary time. However, it becomes a problem when the temperature is lowered by replenishing the content liquid , or when it is desired to boil the content liquid for immediate use due to reboiling.

For this reason, it has recently been desired to shorten the time required for boiling the content liquid.

To cope with this, it can be considered to increase the capacity of the heater. However, the conventional structure cannot deal with the problem.

Explaining this, even if a heater is provided on the lower surface of the bottom of the inner container and on the side peripheral surface, other things are equipped to avoid this, or other things installed inside the body are avoided, Alternatively, in order to avoid thermal influence on a portion that needs to be thermally safe in use, the installation place of the heater tends to be relatively small.

Therefore, even if the capacity of the heater is further increased, if the installation area of the heater is limited, the proportion of the amount of heat that is not consumed for heating the content liquid in the inner container and is dissipated elsewhere increases the heater capacity. The thermal efficiency is extremely reduced, which is a disadvantage.

Recently, the electric kettle is heated for a while to keep it boiling and keep it warm. In addition, the electric kettle is kept boiling for a certain period of time in order to remove odor and harmful foreign substances such as scaly or compounds thereof. It is conceivable that the operation mode is diversified or repeated, and as mentioned above, boiling in a special case is achieved in a short time.

It is preferable that the heating state by the heater can be changed variously depending on the adopted operation mode, but it may not be possible to sufficiently deal with the conventional arrangement in which the heaters are centrally arranged at one place.

On the other hand, JP-A-55-72756,
Japanese Patent Laid-Open No. 2-138628 discloses a bottom surface of a bottom portion of an inner container.
Attach a bottom heater for boiling water to the side of the bottom of the inner container.
Each heater is provided and both heaters are energized when boiling water.
The total capacity is increased by the
Installed in a large area for efficient heat
A state in which the side heater is energized while keeping heat
By doing so, the heat retention temperature is maintained.

However, the content liquid evaporates even if it is kept warm.
Although it diverges and the liquid volume decreases gradually, keep it warm for a long time
The side heaters for heat retention are often
The part that is located above the liquid causes the state of empty cooking
Occasionally, it shortens the product life and
is there.

In addition, Japanese Utility Model Laid-Open No. 56-70746, Japanese Utility Model Publication No.
JP-A-59-108512 discloses a bottom surface of the bottom of the inner container.
The bottom heater for heat retention is heated on the side peripheral surface of the bottom of the inner container.
Side heaters for cooling are provided respectively, and the bottom heater is for keeping heat
Because it is, it is kept warm for a long time
However, since the current-carrying heater never goes above the content liquid,
There is an advantage that it is difficult to invite empty cooking.

However, from the experience of the present inventors, the bottom heater is
To keep the data warm, the heating effect from the bottom of the bottom of the inner container
Because of the high rate, the required current-carrying capacity may be small.
It has been found that a small heating area is required for the inner container.
For this, heating that makes more effective use of the bottom of the bottom of
It would be beneficial if it could be achieved without incurring any disadvantage.

An object of the present invention is to provide an electric hot water storage container that can achieve this .

[0018]

In order to achieve the above-mentioned object, the present invention provides an electric hot water storage container provided with a heater for heating the content liquid around the outer circumference of an inner container housed in a container. Bottom heater provided on the bottom surface of the bottom of the inner container
And a side heater provided on the side peripheral surface of the bottom of the inner container , and at least the bottom heater is a boiling water heater and a heat retention heater.
It is provided in combination with the side heater when boiling water.
With energizing the kettle heating data of the bottom heater and, when the insulation is characterized in that it comprises an energization control means for energizing the thermal insulation heater bottom heater.

[0019]

According to the above-mentioned constitution of the first feature of the present invention, the heater is provided on the bottom surface of the bottom of the inner container, and the inner container,
Since it is divided into a side heater provided on the side peripheral surface of the bottom of the inner container, it is possible to use both the bottom surface and the side peripheral surface of the bottom of the inner container.
The heaters can be provided in a wide range, and even if there is a limitation on the area where the heaters are installed in each part, the bottom heater and the side heaters have the maximum size possible in terms of thermal efficiency in the parts where they are provided. By doing so, the total capacity of the heater can be doubled as compared with the conventional case.

Separately, a heater for boiling water and a heater for keeping warm
The bottom surface heater and the side surface heater are controlled by the energization control means so that the side surface heater and the bottom surface heater can be heated when boiling water.
Since the heater's water heater is energized, it takes a long time to perform the water heating operation between the bottom surface and the side peripheral surface of the bottom of the inner container.
A bottom surface that utilizes a large combined area and is advantageous for heating
This can be achieved at a high speed in a high-capacity energized state with good thermal efficiency using a part of the heater .

During heat retention, the bottom heater 's heat retention heater is turned on.
Electricity is applied to efficiently heat the content liquid from the bottom surface, so the bottom surface
By the heat insulation heater that is provided to the minimum required by using a part of
Do not achieve sufficient heat retention by heating in a low capacity energized state.
For a high-capacity water heater on the bottom of the inner container
Leave a large installation area and use the side panel that is used when boiling water.
The total capacity of the heater and bottom heater
Can be increased and it can be left for a long time
Even liquid content is low in many thermal insulation state, conductible heater content fluid Ino situations be above the, air cook hard advantages lead to state there Ru.

[0022]

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 5 show a first embodiment of the present invention, showing an electric pot capable of boiling water and pouring the content liquid by a non-pressurized electric pump.

As shown in FIG. 1, an inner container 2 is housed in an outer case 3 to form a body 1. The inner container 2 receives an upper end flange by a shoulder member 4 made of synthetic resin which is forcedly fitted to the upper end of the outer case 3.

A bottom ring 5 made of synthetic resin is applied to the lower end of the outer case 3, and the bottom ring 5 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 5 are integrated with each other. A bottom lid 10 is attached to the opening of the bottom ring 5 by fitting a plurality of claws provided on the bottom ring 5 and fixing with screws at one place. The rotary seat body 9 is rotatably fitted by the plurality of claws, and the body 3 can be rotated on the rotary seat body 9 when the body 1 is stationary.

A pouring path 11 for pouring out the content liquid is connected to the bottom of the inner container 2. The pouring path 11 is a space between the inner container 2 and the outer case 3 and rises up into a beak-shaped projection 12 provided at the front part of the shoulder member 4, and at this part, U
The discharge port 19 is bent downward and opens downward. A pouring pump 13 for feeding the content liquid flowing into the pouring path 11 to the discharge port 19 is provided at a portion of the pouring path 11 below the inner container 2, and is driven by a motor.

The content liquid discharged from the discharge port 19 is once exposed to the atmosphere, and then integrally molded with the lower cover 15 attached to the front portion of the outer case 3 which is fitted to the lower side of the beak-shaped protrusion 12. Received by the liquid injection guide 16
It is guided to and injected.

The rising portion of the pouring path 11 is the inner container 2
A liquid amount detection unit 21 is provided for detecting the liquid amount by using the same liquid level as in the electrostatic capacitance method or the photo sensor method. A water shutoff valve 22 at the time of falling is provided immediately upstream of the bent portion of the spout passage 11.

A side heater 61 is provided on the side peripheral surface of the bottom of the inner container 2.
a is applied to the bottom bottom surface of the bottom heater 61b, 61
c is applied.

The bottom heaters 61b and 61c are a water heater and a heat-retaining heater, and each of the filament bottom heaters 61b and 61c is alternately wound around an annular mica plate, sandwiched between the mica plates, and housed in a case. It is a thing.

The side heater 61a is also a linear strip, which is wound around a belt-shaped mica plate and housed in a hollow band-shaped case.

A heat shield plate 24 is screwed under the bottom of the inner container 2 using a metal fitting 23, and a presser bar 28 is sandwiched between the heat shield plate 24 and the back side of the bottom heaters 61b and 61c. Thereby, the bottom heaters 61b and 61c are pressed against the bottom surface of the bottom of the inner container 2. The pouring pump 13 is attached to a part of the heat shield plate 24.

A temperature sensor 33 for detecting the temperature of the content liquid is provided in the through hole at the center of the bottom heaters 61b and 61c.
It is thermally isolated from the bottom heaters 61b and 61c by the heat shield wall 34, so that the temperature of the inner container 2 can be accurately detected without the thermal influence of the bottom heaters 61b and 61c.

The side heater 61a is wound around the outer periphery of the bottom of the inner container 2, and the ends of the band-shaped case are connected by screws. By tightening and tightening the screws, the side heater 61a is fastened to the side peripheral surface of the inner container 2 and firmly attached. ing.

The bottom ring 5 is provided with a circuit housing box 41 which opens downward. As a result, the circuit board 48 housed in the circuit housing box 41 is waterproofed against water leakage from above.

A body lid 62 is provided on the upper end of the body 1. The body lid 62 has a hinge pin 6 attached to the shoulder member 4 at the rear portion thereof.
It is pivotally attached by means of 3. This pivotal attachment is performed on a bearing member 64 that is detachably fitted to the shoulder member 4, and the body lid 62 can be attached and detached by attaching and detaching the bearing member 64. This makes it easy to clean the inside of the container 1 and to supply and discharge the content liquid.

The bearing member 64 is inserted into the recess 65 of the shoulder member 4 from above, and one end 68 of the spring 68 is operated around the hinge pin 63 so as to bias the body lid 62 in the opening direction.
The bearing member 64 is reliably locked in the mounted state by elastically engaging a with the locking portion 66 provided in the recess 65.

To release this, the vessel lid 62 is further rotated in the opening direction from a predetermined open position where the biasing force of the spring 68 acts, and one end 68a of the spring 68 follows this movement, and Since it disengages from the locking portion 66, the bearing member 64 may be lifted together with the body lid 62 in this state.

A lock member 69 is provided at the free end of the body lid 62 for elastically engaging the locking portion 71 of the shoulder member 14 with the bias of the spring 72 to lock the body lid 62 in the closed state. Has been.

The lock member 69 is guided forward and backward by a projection 83 formed on the upper surface of the back plate 82 of the body lid 62.

On the slope 75 of the lock member 69, the container lid 6 is attached.
The projection 72 at the tip of the lock release lever 77 pivotally attached at the rear by the shaft 76 is in contact with the bearing 150 in the second bearing. The lock release lever 77 is the lock member 69.
When the spring 71 is advanced to the engagement position, it is pushed upward by the slope 75 through the protrusion 78, and the operation portion 79 at the tip end is moved from the upper surface opening 81 of the body lid 62 to the body lid. It is exposed so as to be flush with the surface of 62.

When the operating portion 79 is pushed down in this state, the lock release lever 77 is rotated counterclockwise and the projection 78 is rotated.
The sloping surface 75 of the lock member 69 is pushed by the lock member 69 against the spring 68, and the lock member 69 is retracted to disengage from the locking portion 72. Therefore, the lock of the body lid 62 in the closed state is released. At the time when this lock release is completed, there is a play in the unlocking direction between the lock release lever 77 and the body lid 62, and the body lid 62 is released from the pressing operation of the lock release lever 77. It is slightly rotated in the opening direction by the spring 68 regardless of whether it is performed or not.

As a result, the lock member 69 is slightly displaced upward from the position of the locking portion 71, so that the lock member 69 is again moved to the locking portion 72 by a natural operation of releasing the hand from the operating portion 79 when releasing the lock. The body lid 62 is automatically opened to the fully opened state by the spring 68 without any engagement.

The lock release lever 77 has a safety member 114.
Is working. The safety member 114 is supported on the body lid 62 so as to be slidable in the longitudinal direction of the lock release lever 77. When the operating portion 114a is slid, the locking portion 114b is advanced and retracted below the tip of the lock release lever 77, and the lock release lever 77 is prevented from moving when entering the tip of the lock release lever 77. Prevents easy unlocking.

The inner container 2 is provided on the lower surface of the back plate 82 of the body lid 62.
A metal inner lid 85 that closes the rear of the
It is screwed at 0. Outer periphery of inner lid 85 and back plate 82
A seal packing 86 facing the rim of the inner container 2 is sandwiched between and, and when the body lid 62 is closed, the inner lid 85 contacts the rim of the inner container 2 at the seal packing 86 portion. Close the inner container 2.

A steam passage 87 is provided between the inner lid 85 and the back plate 82 for allowing steam generated in the inner container 2 to escape to the outside. The steam passage 87 has an opening 88 to the inner container 2 side in the inner lid 85, and an opening 89 to the outside on the upper surface of the rear side of the vessel lid 62. A valve chamber 91 fitted to the back plate 82 from below is provided in the opening 88, and a water stop valve 92 at the time of tipping is provided in the valve chamber 91 which is closed when the body 1 falls.

Immediately downstream of the valve chamber 91 is a vessel lid 62.
A pool portion 93 having a wide space that reaches the upper part of the container 1 is provided, and the container body 1 falls to either the front or rear or the left and right to prevent the content liquid from being stopped even by the water stop valve 92 at the time of the fall and the steam passage 87. When the content liquid is about to flow out through the reservoir 93, the content liquid that is about to flow out is stored in the reservoir portion 93, and the content liquid is prevented from flowing out to the downstream side and prevented until it overflows.

As a result, the outflow of the content liquid to the outside is suppressed, and it is possible to provide a sufficient time margin for returning the container 1 to the normal state before the outflow to the outside. For this reason, the passage cross-sectional area of the outlet 94 from the reservoir 93 to the downstream side is made small, and the shape of the first reservoir 93 relative to the outlet 94 is defined by the front, rear, left and right directions of the container 1. Various measures are taken such as having a spread on the upper surface side of the body lid 62.

Control circuit 1 mounted on the circuit board 48
00 is the one using the microcomputer 101. The pouring operation key 102 provided on the operation panel 201 provided on the upper surface of the beak-shaped protrusion 12 is provided so as to press the pressure sensor 103, and the pressure sensor 103 measures the difference in pressing force during the pouring operation. By converting the signal into an electric signal and inputting it to the microcomputer 101, the drive voltage of the pouring pump 13 is switched to increase / decrease the pouring flow rate.

The operation panel 201 is as shown in FIG. 2, and in addition to the pouring operation key 102, the reboiling / scaling removal setting key 104, the timer setting key 105, the pouring lock /
A release key 106, a liquid volume display unit 107, boiling, descaling, and heat retention display units 108 to 110, and timer set time display units 111 to 113 are provided.

The reboil / descaling removal setting key 104 and the pouring lock / release key 106 are designed so that the setting mode changes to a rotary type each time they are operated.

FIG. 3 shows a control circuit 100. In the microcomputer 101, 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, and a display. Circuit 305
Are properly connected via.

The operation control will be described below. FIG. 4 is a flow chart of the main routine showing the main operation control. After the power is turned on, the initial setting of step # 1 is first performed, and then the processing according to various inputs and outputs is performed (step # 2). Next, when the boiling process (step # 3) is called and the temperature of the content liquid is lower than the heat retention temperature, that is, when the temperature is low due to the initial supply of water or the addition of the content liquid, reboiling with the reboiling / scaling removal setting key 104 is performed. When is set, the content liquid is controlled to be heated at high speed from the wide area to the boiling point with high heat efficiency in a high capacity state by the side heater 61a and the bottom heater 61b, 61c, which is the boiling water heater 61b .

Subsequently, the heat retention process (step # 4) is called, and after the initial boiling or re-boiling, the bottom heater 61
b, 61c, a small-capacity bottom heater 61 for keeping heat
By turning on c , the content liquid is controlled to be kept at a predetermined temperature so that there is no heat loss due to excessive heating.

[0055] bottom heater motor 6 1c is we are against the bottom lower surface to the container 2, as well as achieving better thermal efficiency of the thermal insulation caused by heating in small capacity energized, energized than the contents liquid liquid content is low heater, i.e. never towards the bottom heater motor 6 1c is on top, it is difficult to cause the air-cook state in easily kept state placed a long time, easily achieving safe use.

In this sense, it is advantageous in order to prevent idle cooking that the side heater 61a is provided as low as possible.

Subsequently, timer processing (step # 5)
Is called and the timer is set by the timer setting key 105, delay control is performed so that the boiling operation start time is delayed to the time required to boil the content liquid at the timer setting time and then the boiling operation is started. To do.

Next, when the descaling process (step # 6) is called and the re-boiling / descaling removal setting key 104 is operated in the descaling mode, the boiling operation in step # 3 is continued for a predetermined time. Control. However, the boiling operation may be repeated intermittently to remove the descaling. In addition, during the descaling process, the side heater 61a and the bottom heaters 61b and 61c are alternately energized. In this case, the content liquid is convected when heated by the side heater 61a and the bottom heaters 61b, 61.
Since the content liquid is disturbed by the difference between the convection current when heated in c and the heating position, the content liquid is disturbed, so that the odor and the diffusion of foreign substances such as scaly and its compounds can be promoted.

Next, the pump processing subroutine (step #
7) is called, the pouring flow rate is set according to the pressing force of the pressure sensor 103 by the pouring operation unit 102, and the motor 14 of the pouring pump 13 is driven so as to obtain this set pouring flow rate.

Finally, after the other processing (step # 8) is completed, the process returns to step # 2, and the above control is repeated thereafter.

The side heater 61 in each case by the above processing
FIG. 5 shows the energization states of the a and bottom heaters 61b and 61c and the temperature change of the content liquid.

In short, in this embodiment, the heater is the inner container 2
Bottom heaters 61b and 61c provided on the bottom surface of the bottom of the
The side heater 61a provided on the side peripheral surface of the bottom of the container 2
However, at least the bottom heater should be a water heater and a heat insulator.
The heaters 61b and 61c are combined to provide hot water.
When boiling, the side heater 61a and bottom heater
The heater 1b is energized and the bottom heater 61 is kept warm.
Bottom heater 61 of b and 61c as a heat retaining heater
The internal function of the microcomputer 101 that energizes c
The basic feature is that it is equipped with the energization control means used.
It

Here, a heater is provided on the bottom surface of the bottom of the inner container 4.
Bottom heaters 61b and 61c provided and the bottom of the inner container 4
And a side heater 61a provided on the side peripheral surface of the section.
Therefore, both the bottom surface and the side peripheral surface of the bottom of the inner container 4 are used.
The heater can be installed in a wide range of
Even if there is a limit to the area where the heater can be installed,
The surface heaters 61b and 61c and the side surface heater 61a are
The maximum size and size possible in terms of thermal efficiency
By doing so, the total heater capacity can be doubled compared to the conventional case.
Can be added.

The bottom heater 61, which is a heater for boiling water
b and a bottom heater 61c which is a heat retaining heater.
The bottom heater and the side heater 61a are connected to the micro computer.
The energization control by the internal functions of-menu data 101, Yunie
At the time of staking, the side heater 61a and the bottom heater
61b is energized, so it takes a long time to boil water
Of the inner container 4 together with the bottom surface of the bottom and the side surface.
Bottom heater 61 that utilizes a large area and is advantageous for heating
High speed with high thermal efficiency and high capacity using b
Can be achieved.

When the temperature is kept warm, the bottom heaters 61b and 61c are
The bottom heater 61c, which is a heat retaining heater inside, is energized
Since the solution is heated efficiently from the bottom, part of the bottom is
Bottom heater, which is a heat-retaining heater installed to the minimum necessary for
Insufficient heat retention due to heating at low capacity with 61c
High capacity hot water on the bottom surface of the inner container 4 while achieving without
Large installation area for bottom heater 61b
Side heaters 61a and
And the bottom heater 61b to further increase the total capacity.
It is possible to keep it warm and keep it for a long time.
Even if the content liquid is low,
Since it does not go up, it is an advantage that it is hard to invite empty cooking
There is.

In the case of the present embodiment, even in the water heating mode
Energize the bottom heater 61c for heat retention to energize even higher capacity
Although it achieves high-speed boiling, the bottom in the boiling water mode
The energization of the surface heater 61c can be omitted.
However, the above characteristics can be exhibited.

6 and 7 show a second embodiment of the present invention. In the first embodiment, the side surface heater 61a and the bottom surface heaters 61b and 61c are always used during the boiling operation.
All of the above are energized and heated, but when initial boiling is performed by the timer setting, the boiling operation will be performed while sleeping or going out, so it may take a long time for boiling. .

Therefore, in this embodiment, as shown in FIG. 6, the operation panel 201 is provided with the high-speed boiling key 211, and only when the high-speed boiling key 211 is operated, the content liquid uses all of the side heaters 61a and the bottom heaters 61b, 61c. And boil at a high speed, but in other cases, bottom heaters 61b, 61c
It is boiled at a normal rate only by itself.

In a case where this is normally boiled by the timer setting and is being used, the side surface heater 61a and the side heater 61a The energized state of the bottom heaters 61b and 61c and the state of temperature change of the content liquid are shown in FIG.

FIG. 8 shows a third embodiment of the present invention. In this embodiment, since the side surface heater 61a is provided in addition to the bottom surface heaters 61b and 61c, the capacity of the bottom surface heaters 61b and 61c is set to be smaller than that when only this is provided, and the inner container 2 The distance S to the temperature sensor 33 can be increased by providing the bottom surface of the bottom surface small toward the outer circumference.

The heat shield plate 24 is provided with a spring 2 for pressing the heater.
8 is integrally molded.

As a result, the temperature sensor 33 has the bottom heater 6
It is possible to prevent the thermal influence from 1b and 61c directly, and it is possible to accurately detect the temperature of the liquid content without providing the heat shield wall 34 as in the first embodiment.

Therefore, the structure can be simplified and high accuracy can be maintained.

FIG. 9 shows a fourth embodiment of the present invention, in which the side heater 61a and the bottom heaters 61b and 61c are used as sheath heaters, and these are applied to the side peripheral surface and the bottom surface of the bottom of the inner container 2. It is embedded in the heating plate 221.

As a result, the side heater 61a and the bottom heaters 61b and 61c can be handled as one component in assembly, and heating by these heaters can be performed with high thermal efficiency via the heating plate 221.

In each of the above embodiments, the side heater 61a is used.
Is a single heater, it can be composed of a plurality of heaters, and the bottom heaters 61b and 61c are a plurality of heaters, but they can also be composed of a single heater. Further, it is possible to freely design which heater is used for boiling water and which heater is used for keeping heat.

[0077]

According to the invention present devised, a bottom heater heater is provided on the bottom surface of the bottom of the inner container, the side periphery of the bottom of the inner container
Runode are side heater and a two-minute set, which is provided on the surface, a wide range of uses both bottom and side peripheral surface of the bottom of the inner container
A heater can be provided, and even if there is a limitation on the area where the heater is installed in each of these parts, the bottom heater and the side heater are set to the maximum size possible in terms of thermal efficiency in the part where they are provided. , Ru can be doubled the total capacity of the heater than in the conventional case.

Separately, a heater for boiling water and a heater for keeping warm are separately provided.
The bottom surface heater and the side surface heater are controlled by the energization control means so that the side surface heater and the bottom surface heater can be heated when boiling water.
Since all of the heaters are energized, the time-consuming boiling water operation was matched with the bottom surface of the bottom of the inner container and the side peripheral surface.
A bottom heater that uses a large area and is advantageous for heating.
Utilizing part, Ru can be accomplished at a high speed in good thermal efficiency high capacity energized.

Further, when the temperature is kept warm, the heat-retaining heater of the bottom heater is turned on.
Electricity is applied to efficiently heat the content liquid from the bottom surface, so the bottom surface
By the heat insulation heater that is provided to the minimum required by using a part of
Do not achieve sufficient heat retention by heating in a low capacity energized state.
For a high-capacity water heater on the bottom of the inner container
Leave a large installation area and use the side panel that is used when boiling water.
The total capacity of the heater and bottom heater
Can be increased and it can be left for a long time
Even liquid content is low in many thermal insulation state, energization heater at Ino situations be above the liquid contents, air cook advantage hardly lead to state there Ru.

[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 plan view of an operation panel of the electric pot of FIG.

FIG. 3 is a block diagram of a control circuit for the electric pot of FIG.

FIG. 4 is a flowchart showing a main routine of main operation control of the electric pot of FIG.

5 is a graph showing the temperature change of the content liquid and the energization state of the heater under the control of FIG.

FIG. 6 is a plan view of an operation panel showing a second embodiment of the present invention.

FIG. 7 is a graph showing an example of energization control in the second embodiment together with the temperature change of the content liquid.

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

FIG. 9 is a partial sectional view of an electric pot showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Body 2 Inner Container 61a Side Heaters 61b, 61c Bottom Heater 100 Control Circuit 101 Microcomputer

Claims (1)

[Scope of utility model registration request] 1. An electric hot water storage container provided with a heater for heating a content liquid around the outer circumference of an inner container housed in a body, wherein the heater is a bottom heater provided on the lower surface of the bottom of the inner container.
And a side heater provided on the side peripheral surface of the bottom of the inner container , and at least the bottom heater is a boiling water heater and a heat retention heater.
It is provided in combination with the side heater when boiling water.
And with passing a kettle heater data of the bottom heater, electric hot-water storage container, characterized in that it comprises an energization control means for energizing the thermal insulation heater bottom heater during heat insulation.