JP3198137B2 - Insulation pot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a heat retaining pot.

[0002]

2. Description of the Related Art In a heat retaining pot in which various heat retaining temperatures can be set, setting information is erased when a power failure occurs, so that it is necessary to set the heat retaining temperature again when the power failure recovers. In addition, when the power is restored, the heating operation is always performed after the boiling operation is performed. In addition, at the time of the power failure, the hot water temperature display disappeared and the hot water temperature of the pot could not be known.

[0003]

As described above, in the conventional heat retaining pot, it is troublesome to set the heat retaining temperature again at the time of recovery from the power failure. In addition, for the hot water which has been de-scalped by boiling once, the warming operation is performed after the boiling operation is performed, so that it takes a long time to obtain a hot water of a suitable temperature, and the problem of wasteful power consumption. was there. Furthermore, it was inconvenient to know the hot water temperature of the pot at the time of the power failure.

[0004] Accordingly, the present invention is, rather than good usability and can automatically perform a warm operation on the basis of the warm temperature, which is set in before the power failure in the event of a power failure return, also, hot water was boiling once Nitsu
In addition, only the warming operation is performed when the power
Hot water can be obtained in a short time and power consumption is low.
An object of the present invention is to provide a heat retaining pot that can prevent waste .

[0005] The invention also can know the water temperature of the pot at the time of power failure, it is intended to provide a heat insulating pot capable of further improving the usability.

[0006]

The invention corresponding to claim 1 is:
Detects the hot water temperature of the pot and performs the boiling operation
In thermal insulation pot performing heat keeping operation after the end of the boiling operation, and the retained temperature setting means for setting various retained temperature, and power failure detecting means for detecting a power failure, stores the retained temperature information set by the retained temperature setting means 1 Degree boiling operation
Storage means for storing information as to whether or not the operation has been performed ; a battery for backing up the storage means at the time of power failure; and information on the once boiling operation being stored in the storage means after recovery from the power failure.
There line warmth operation based on the retained temperature information stored in the storage means and are, information boiling operation is not performed serial
If it is remembered, it performs the boiling operation and then stores it in the storage means.
Is provided with a row intends controller warmth operation based on the retained temperature information stored.

[0007] The invention corresponding to claim 2 provides the protection described in claim 1.
In the hot pot, an indicator for displaying the hot water temperature and this display
Water temperature display control to display the hot water temperature of the pot detected by the heater
Means are provided, and the indicator and hot water table
The power supply of the display control means is backed up .

[0008]

[0009]

In the present invention having such a configuration, the heat retention temperature information set by the heat retention temperature setting means is stored in the storage means backed up by the battery. Then, when the power failure is restored, the heat retaining operation is performed based on the heat retaining temperature information stored in the storage means.

Further, in the present invention, the heat retention temperature information set by the heat retention temperature setting means and the information on whether or not the boiling operation has been performed once are stored in the storage means backed up by the battery. When the power failure is restored, if the information that the boiling operation has been performed once is stored in the storage unit, the heat retention operation is performed based on the heat retention temperature information stored in the storage unit, and the boiling operation is not performed. When the information is stored, the heating operation is performed based on the warming temperature information stored in the storage means after performing the boiling operation.

[0011]

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

FIG. 1 is a view showing a schematic configuration of a heat retaining pot.
A cylindrical pot container 2 also having an open upper end is accommodated in a cylindrical outer frame 1 having an open upper end. The outer periphery of the upper end of the pot container 2 and the inner periphery of the upper end of the outer frame 1 are closed by flanges 2a, 1a. A lid 3 is provided above the outer frame 1 so as to be openable and closable. When the lid 3 is closed, the upper end opening of the pot container 2 is sealed.

A donut-shaped water heater 4 and a warming heater 5 are arranged on the outer periphery of the bottom of the pot container 2 at the outer periphery, and a temperature sensor 6 for detecting the temperature of the hot water in the pot container 2 is arranged at the center. I have. As the water heater 4, for example, a heater of about 600 W is used.
For example, about 100 W is used. An operation panel 7 is provided on an upper end surface of the lid 3.

As shown in FIG. 2, the operation panel 7
A liquid crystal display 8 for displaying the current hot water temperature detected by the temperature sensor 6 and for selectively displaying various set warming temperatures of "95 ° C", "80 ° C", "75 ° C" and "65 ° C"; , A boiling LED (light emitting diode) 9 for displaying a water heating state, and a warming LED 11 for displaying a warming state. In addition, a boiling / water heater key 12, a heat retention temperature setting key 13, and an off key 14 are provided.

FIG. 3 is a diagram showing a circuit configuration. A series circuit of the water heater 4 and a normally open contact 22a of a relay 22 is connected to a commercial AC power supply 21 via a plug (not shown). 5 and a bidirectional three-terminal thyristor 23 are connected in series. Further, a constant voltage circuit 24 is connected to the commercial AC power supply 21 via a plug (not shown). A control unit 25 having a microprocessor is connected to the constant voltage circuit 24.

The control circuit 25 includes a relay drive circuit 26 for controlling the conduction of the coil 22c of the relay 22, a thyristor drive circuit 27 for controlling the conduction of the thyristor 23,
The operation of a RAM (random access memory) 28, a backup memory 29 as storage means, a battery 30, the liquid crystal display 8 and the LEDs 9 to 11 are controlled. The control circuit 25 includes a power failure detection circuit 31, the temperature sensor 6, and each of the keys 12-1.
4 is input. The battery 30 supplies power to the control unit 25 and the backup memory 29 by operation.

When water is stored in the pot container 2 and the heat retention temperature is selected and set by the heat retention temperature setting key 13 and the boiling / water heater key 12 is operated, the controller 25 controls the relay drive circuit 26 and heats the water. The LED 10 is turned on. Thereby, the relay 22 is operated, the normally open contact 22a is turned on, and the energization to the water heater 4 is started. When the temperature is set, the control unit 25 stores the set temperature information in the backup memory 29 and displays the selected temperature on the liquid crystal display 8. In the case of FIG. 2, the selected set temperature “95” is displayed, indicating that the other temperatures “80”, “75”, and “65” are not displayed.

The control unit 25 takes in the temperature detected by the temperature sensor 6 and causes the liquid crystal display 8 to display the current temperature. When the temperature of the hot water in the pot container 2 rises and the temperature detected by the temperature sensor 6 reaches 100 ° C., the control unit 25 turns on the boiling LED 9 to notify that the boiling operation is being performed. Then, when the boiling operation is continued for a predetermined time, the relay drive circuit 26 is controlled to stop the operation of the relay 22, turn off the normally open contact 22a, and shift to the warming operation. Then, a flag is set in the backup memory 29 indicating that the boiling operation has been performed once. Thereafter, when the temperature detected by the temperature sensor 6 falls below the set temperature, the thyristor drive circuit 27 is controlled to control the conduction of the thyristor 23.

During this warming operation, the control section 25 performs the control shown in FIG. That is, it is checked whether or not the power failure detection circuit 31 has detected the power failure. If the power failure has not been detected, the battery 30 is turned off, and the liquid crystal display 8 displays the current temperature and the set heat retention temperature. Insulation LE
D11 is turned ON. Then, heat retention control is performed. That is, by controlling the thyristor 23 to be turned on and off based on the set warming temperature, the energization control to the warming heater 5 is performed, and the hot water temperature in the pot container 2 is maintained near the set warming temperature.

When the power failure detection circuit 31 detects a power failure during the warming operation, the battery 30 is turned on. Thus, the power to the control unit 25 and the backup memory 29 is backed up. Further, the current temperature detected by the temperature sensor 6 is displayed on the liquid crystal display 8. Further, the information that has been kept warm is stored in the backup memory 29.

Thereafter, when the power failure detection circuit 31 detects the recovery from the power failure, the control unit 25 performs the control shown in FIG. That is, the information stored in the backup memory 29 is read,
Check whether the power is kept warm before the power failure. If not, the relay drive circuit 26 is controlled to operate the relay 22 to turn on the normally open contact 22 a to start energizing the water heater 4. Water heater LED1
0 is turned on, and the symbol “−−” blinks on the liquid crystal display 8. When the temperature sensor 6 detects the boiling temperature, the boiling LED 9 is turned on. Thereafter, when the boiling operation continues for a predetermined time, it is determined that the boiling has been completed, and the operation shifts to a warming operation.

When the temperature is maintained before the power failure, it is checked whether or not the temperature of the hot water is low based on the temperature detected by the temperature sensor 6. Then, if the hot water temperature is high, the warming operation is started as it is. If the temperature of the hot water is low, it is subsequently determined whether or not boiling has occurred once based on the information read from the backup memory 29. If the temperature is not boiling, the relay drive circuit 26 is controlled in the same manner as in the non-heat-preserving state before the power failure. The relay 22 is operated to turn on the normally open contact 22 a to start energizing the water heater 4. In addition, the water heater LED 10 is turned on, and the symbol “−−” is blinked on the liquid crystal display 8. When the temperature sensor 6 detects the boiling temperature, the boiling LED 9 is turned on. Thereafter, when the boiling operation continues for a predetermined time, it is determined that the boiling has been completed, and the operation shifts to a warming operation.

If it has boiled once, the relay 22 is operated to start energization of the water heater 4 and the water heater LED 10 is turned on, and the symbol "-" is displayed on the liquid crystal display 8 in a blinking manner. However, at this time, when the temperature detected by the temperature sensor 6 reaches the set heat retaining temperature, the operation shifts to a heat retaining operation.

In the embodiment having such a configuration, the set temperature at the time of the warming operation is set to “9” by the warming temperature setting key 13.
5 "," 80 "," 75 ", or" 65 ". Then, the set heat retention temperature information is stored in the backup memory 29. When the heat retention operation is performed after boiling once, information on boiling once is stored in the backup memory 29.

When a power failure occurs during the warming operation, the power is backed up by the battery 30, and the temperature detected by the temperature sensor 6 is displayed on the liquid crystal display 8 as the current temperature. In this way, the current temperature is displayed on the liquid crystal display 8 even at the time of a power failure, so that even at the time of a power failure, the hot water temperature can be determined without taking out the hot water from the pot. Therefore, the plug can be unplugged from the outlet during the heat retention to set the power outage state, and the temperature of the hot water can be easily known even when the pot is used in another room in the power outage state, and the usability can be improved.

Then, when the power failure recovers, the information stored in the backup memory 29 keeps the temperature before the power failure, and if the current hot water temperature is low and boiling once, the hot water in the pot container 2 will reach the set warming temperature. After that, the heat retention control is performed. That is, as shown in FIG. 6, a boiling operation is performed once, the boiling is completed at the point a, and the operation shifts to the heat retaining operation. For example, the power failure occurs at the point b where the set heat retaining temperature is 85 ° C. and the heat retaining control is performed. Occurred and the temperature of the hot water dropped considerably c
When the power outage recovers at the point, the hot water temperature in the pot container 2 becomes 8
Only by raising the temperature to 5 ° C., the temperature is maintained thereafter. Therefore, the desired hot water can be obtained in a relatively short time. Since no boiling operation is performed, waste of power consumption can be prevented. Furthermore, since the heat retention operation is automatically performed based on the set heat retention temperature before the power failure after the recovery from the power failure, there is no need to reset the heat retention temperature, and it is convenient to use
When resetting, there is no possibility of setting a heat retaining temperature different from the previous heat retaining temperature by mistake.

If the operation before the power outage is other than the heat retention, or if the boiling is not performed even when the temperature is kept, the hot water in the pot container 2 is boiled by the water heating operation, and then the heat retention control is performed. In this way, the unboiled water is always boiled, so that the descaling can be surely performed.

When a water heater is being operated after the recovery from the power failure, the symbol "-" is displayed on the liquid crystal display 8 as shown in FIG.
Since "-" is displayed blinking, the user can easily grasp that the operation is the water heater after the recovery from the power failure. So, for example, unplugging the plug from the outlet during the heat insulation,
In this state, when the water is added and the plug is plugged into the outlet again, the symbol “−−” is displayed in a blinking manner, so that the user can determine that the water heating operation is performed after the recovery from the power failure. Therefore, the user can judge the necessity of boiling and operate the boiling / water heater key 12 to boil the hot water in the pot container 2.

[0029]

According to the present invention as described in detail above, according to the present invention, rather than good usability and can automatically perform a warm operation on the basis of the warm temperature, which is set in before the power failure in the event of a power failure return, or
In addition, once the boiling water has been warmed,
Can obtain hot water at the right temperature in a short time.
The present invention can provide a heat retaining pot that can prevent waste of power consumption .

[0030] According to the invention, also you can know the water temperature of the pot at the time of power failure, in which can provide insulation pot that can further improve the usability.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of an operation panel in the embodiment.

FIG. 3 is a block diagram showing a circuit configuration in the embodiment.

FIG. 4 is a flowchart showing control performed by a control unit of the embodiment during a heat retaining operation.

FIG. 5 is a flowchart showing control at the time of restoration from a power failure by a control unit of the embodiment.

FIG. 6 is a graph showing a change state of the hot water temperature when a power failure occurs after the hot water is boiled once and the power failure recovers in the embodiment.

FIG. 7 is a view showing a display state of a liquid crystal display at the time of recovery from a power failure in the embodiment.

[Explanation of symbols]

2 ... pot container, 4 ... kettle heater, 5 ... warming heater, 6 ... temperature sensor, 8 ... liquid crystal display, 13 ... warming temperature setting key, 25 ... control unit, 29 ... backup memory,
30 ... battery, 31 ... power failure detection circuit.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47J 27/21 101

Claims (2)

(57) [Claims] 1. An insulated pot that detects a hot water temperature of a pot, performs a hot-water boiling operation, and performs an insulated operation after the boiling operation is completed. means, when storing the retained temperature information set by the retained temperature setting means DOO
A serial <br/>憶means monitor once boiling operation stores the information about whether or not performed, a battery to back up the power failure the storage means, is once boiling operation in the storage unit after power is restored
Performed the information had rows warmth operation based on the retained temperature information stored in said storage means is stored, boiled
If information that has not been operated is stored
The heat retention stored in the storage means after performing the rising operation
Insulation pot, characterized in that a row intends controller warmth operation based on the temperature information. 2. The insulated pot according to claim 1, wherein
Indicator for displaying temperature and pot detected by this indicator
Hot water temperature display control means for displaying the hot water temperature of the
The power supply of the display and the hot water temperature display control means by the battery
A warm pot characterized by backing up .