JP3180613B2 - pot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pot having an electric pump for drawing a liquid in a liquid storage container.

[0002]

2. Description of the Related Art FIG. 11 shows an electric circuit diagram of a conventional general pot. The pot of FIG. 11 has a detachable 100 V AC power supply 25, a liquid storage container 26, an electric pump 27, and a hot water supply switch 28. When the hot water supply switch 28 is turned on, the power supply 25 switches the hot water supply switch 28. Then, electric current is supplied to the electric pump 27 through the electric pump 27, and the electric pump 27 operates to draw out hot water in the liquid storage container 26.

[0003] That is, when the user is in the pot storage container 26
When the user wants to use the hot water inside,
By turning on 8, the electric pump 27 was operated and hot water could be poured easily.

[0004]

However, in such a conventional technique, when the power supply 25 is not connected or in the case of a power outage, the electric pump 27 is turned on even if the user turns on the hot water supply switch 28. Has a problem in that no current is supplied, and therefore it becomes impossible to pour hot water from the pot.

When the user operates various switches in a state where the power supply 25 is disconnected, the apparatus does not respond at all. For example, various setting values are displayed on display means such as an LED. Also, it is impossible to emit sound by a piezoelectric buzzer or the like.

Normally, the temperature of the hot water in the liquid storage container 26 does not immediately decrease even if the power supply 25 is cut off.
Although it is possible to maintain a sufficiently practical hot water temperature for about one hour, since the power supply 25 is cut off, all the functions of each unit of the apparatus are stopped as described above, so that high-temperature water is stored. Despite being in the liquid container 26, it was extremely difficult for the user to utilize the hot water.

[0007] The present invention solves the above-mentioned problems, and is provided in a pot even when the power is cut off, for example, when the pot is to be used in a place where there is no AC power supply, or when it is desired to use the pot during a power failure. By making the various functions that can be used within a certain range, it is possible to improve the usability, suppress the power consumption when the power supply is cut off, and make effective use of electric energy possible. The purpose is.

[0008]

Means for Solving the Problems To achieve the above object,
Means for solving the first problem of the present invention include a detachable power supply, a power storage circuit, a liquid storage container, a first switch, and a second switch.
Switches, a boost converter connected to the power storage circuit, an electric pump that draws out the liquid in the storage container, and a spotlight provided near the outlet of the electric pump,
A power supply detecting means for detecting an output of the power supply; and a control circuit, wherein the power storage circuit is charged by a current from the power supply, and the electric pump is operated for a first predetermined time after the first switch is operated. It operates when the second switch is operated within a time and within a second predetermined time after the operation of the electric pump is completed, and the boost converter and the spotlight are operated by the first switch. The operation starts when the first predetermined time and the second
When the predetermined time elapses, the electric pump and the spotlight are supplied with electricity from the power storage circuit via the boost converter when the power is cut off.

[0009]

According to the first aspect of the present invention, when pouring hot water, electric energy is supplied from the power storage circuit even when the power is cut off, and the electric pump operates.
Since the liquid is drawn from the liquid storage container, it can be used comfortably. Even if the operation of the electric pump is stopped once, if the operation is within the second predetermined time, the tapping can be continued by simply operating the second switch again, which is convenient. Further, when the power supply is not connected, the boost converter does not operate until the first switch is operated, so that a load of electricity from the power storage circuit required for the operation of the boost converter can be reduced. In addition, since the spotlight is turned on during the period in which the second switch is effectively operated, very safe and comfortable use is possible.

[0010]

EXAMPLES Referring to FIG. 1 will be described first reference example (Example 1) present invention.

[0011] Figure 1 shows an electrical circuit diagram of the pot in a first reference example of the present invention. Referring to FIG.
It comprises an AC power supply 2 of V.50 or 60 Hz and a magnet type connector 3 which is easy to attach and detach. Power supply 1
Is connected to the charging circuit 4, and the output of the charging circuit 4 is connected to the power storage circuit 5.

The charging circuit 4 includes a transformer for converting an AC voltage to a low voltage, a rectifying circuit for converting an output of the charging circuit to a DC voltage, and the like. In the present embodiment , the power storage circuit 5 is constituted by a large-capacity capacitor using an electric double layer. The power storage circuit 5 is configured by a power transistor and the like after passing through a boost converter 6 that converts the voltage of the power storage circuit 5 to a substantially constant DC voltage higher than that by turning on and off the semiconductor switching element at a high frequency. The electric pump 8 is connected via the switching element 7.

The electric pump 8 draws out the liquid in the liquid storage container 9, and its rated voltage has the same value as the output voltage value of the boost converter 6. In the present embodiment , the liquid storage container 9 is configured to be heated by the heater 10. The heater 10 is connected from the power supply 1 via a switching element 11 such as a relay. In the present embodiment, the heater 10 has a power of 1000 W, and has enough power to boil water in a state where water is put in the liquid storage container 9.

A spotlight 13 is connected to an output of the boost converter 6 via a switching element 12. The spotlight 13 is provided in the vicinity of the outlet of the electric pump 8, and displays the position where the user receives hot water in a container such as a cup when the user goes out of the bath.

Switching element 7, switching element 1
1. The control circuit 14 controls the on / off control of the operation of the switching element 12 and the boost converter 6.

The power supply detecting means 15 is connected to the output of the power supply 1, and when there is an output of the power supply 1, that is, when the AC power supply 2 is connected by the connector 3, the control circuit 14 is set to HIGH. When the AC power supply 2 is not output due to a disconnection of the connector 3 or a power failure, a LOW is output to the control circuit 14.

A push button switch 16 which can be operated by a user is connected to the control circuit 14, and the electric pump 8 is operated so that the user can easily operate it.
Is provided at a position near the exit. The control circuit 14 turns on the switching element 7 while the push button switch 16 is being pressed. At the same time, if the output of the power supply detecting means 15 is LOW, the control circuit 14 acts to cause the boost converter 6 to operate.

When the boost converter 6 is stopped, its output voltage is almost only the terminal voltage of the power storage circuit 5, but when the boost converter 6 is operating, it outputs a DC of a constant voltage of approximately 7V. can do.
However, when the power supply 1 is connected, the charging circuit 4
Therefore, a stable power supply of about 7 V is always sent to the boost converter 6 irrespective of the terminal voltage of the power storage circuit 5.

The operation of the above configuration will be described.
First, when the user puts water into the liquid storage container 9 and then connects the connector 3, the output of the power supply 1 becomes 100 V, a charging current is supplied to the power storage circuit 5 via the charging circuit 4, and the charging of the power storage circuit 5 is performed. Begins to take place. At this time, the switching element 11 is turned on by the control circuit 14, and the AC voltage of 100 V is also supplied to the heater 10. The water in the container 9 reaches boiling. In the case of boiling, the control circuit 14 turns off the switching element 11, and the water heating operation is completed.

In this state, if the user wants to use hot water, he pushes the push button switch 16 and the control circuit 1
By the action of 4, the switching elements 7 and 12 are turned on, the electric pump 8 operates, and the spotlight 13 is turned on at the same time. As a result, the spotlight 13 is turned on, and the electric pump 8 draws out hot water in the liquid storage container 9, so that the user can drink tea or the like by receiving the hot water from the cup.

At this time, a constant voltage of approximately 7 V is applied to the electric pump 8 and the spotlight 13 from the power supply 1 via the charging circuit 4 so that the electric pump 8
Good operation can be performed irrespective of the terminal voltage. The user uses the electric pump 8 and the spotlight 1
3 good operation makes it very comfortable and convenient to use.

Here, the switching element 7 and the switching element 12 are kept on by the operation of the control circuit 14 throughout the period in which the push button switch 16 is turned on by the user. And the lighting of the spotlight 13 is also continued.

When the user stops pressing the push button switch 16 when the required amount of hot water has been supplied, the switching element 7 and the switching element 12 are turned off at that point by the action of the control circuit 14. Then, the electric pump 8 stops, the spotlight 13 turns off, and the state returns to the state before the push button switch 16 is pressed.

The power supply detecting means 15 outputs a HIGH signal to the control circuit 14 when the power supply 1 is connected, and the control circuit 14 operates the boost converter 6 when receiving the HIGH signal. Not to be performed.

Next, the operation when the connector 3 is removed will be described. Here, the output of the power supply detecting means 15 is LOW. In this case, since the charging circuit 4 does not operate, the power storage circuit 5 is not charged, and the energy stored when the power supply 1 was connected to the power storage circuit 5 is in a state of being accumulated.

However, even in this state, when the user operates the push button switch 16, the control circuit 14 operates, the switching elements 7 and 12 are opened and closed, and the boost converter 6 operates. , The electric pump 8 and the spotlight 13 operate almost in the same manner as when the power supply 1 is connected.

In this embodiment , since the storage circuit 5 uses a large-capacity capacitor, the terminal voltage gradually decreases from the initial 7 V as energy is extracted. However, by operating boost converter 6, even when the terminal voltage of power storage circuit 5 is reduced to 2.5V, a substantially constant voltage of 7V can be output.

When the power supply 1 is cut off, power is not supplied to the heater 10, but at this time, in this embodiment , the output of the power supply detection means 15 is set to LOW. Since the control circuit 14 turns off the switching element 11 constituted by the relay, the current flowing through the coil of the relay is also cut, so that no unnecessary current is supplied. The configuration is such that the burden is reduced.

As described above, in this embodiment , the boost converter 6 connected to the power storage circuit 5 operates while the power supply 1 is disconnected, and a substantially constant voltage is supplied to the electric pump 8 and the spotlight 13. Accordingly, the electric pump 8 can exhibit a stable tapping performance, and the spotlight 13 can also secure a stable light amount.
Therefore, safe and comfortable use is possible.

[0030] will be described with reference to FIG. 2 for the second reference example (Example 2) The present invention. The same components as those described in the first embodiment are denoted by the same reference numerals.

[0031] Figure 2 shows an electrical circuit diagram of the pot in the second reference example of the present invention. In FIG. 2, the power source 1 is 100
It comprises an AC power supply 2 of V.50 or 60 Hz and a magnet type connector 3 which is easy to attach and detach. Power supply 1
Is connected to the charging circuit 4, and the output of the charging circuit 4 is connected to the power storage circuit 5.

The charging circuit 4 comprises a transformer for converting an AC voltage to a low voltage, a rectifying circuit for converting the output thereof to a DC, and the like. In the present embodiment , the power storage circuit 5 is constituted by a large-capacity capacitor using an electric double layer. By turning on and off the semiconductor switching element at a high frequency from the power storage circuit 5, the voltage is output from the power storage circuit 5 through a boost converter 6 that converts the voltage of the power storage circuit 5 to a substantially constant DC voltage higher than that, and a switch 17 configured by a relay is provided. An electric pump 8 is connected in series.

The electric pump 8 draws out the liquid in the liquid storage container 9, and its rated voltage is the same as the output voltage value of the boost converter 6. In the present embodiment , the liquid storage container 9 is configured to be heated by the heater 10. The heater 10 is connected from the power supply 1 via a switching element 11 such as a relay. In the present embodiment, the heater 10 has a power of 1000 W, and has enough power to boil water in a state where water is put in the liquid storage container 9.

Whether or not the switch 17, the switching element 11, and the boost converter 6 operate is controlled by a control circuit 18 so as to be turned on and off.

The power supply detecting means 15 is connected to the output of the power supply 1, and when there is an output of the power supply 1, that is, when the AC power supply 2 is connected by the connector 3, the control circuit 18 is set to HIGH. When the AC power supply 2 is not output due to a disconnection of the connector 3 or a power failure, a LOW is output to the control circuit 18.

The control circuit 18 is connected to a push-button switch 16 which can be operated by the user, and the electric pump 8 can be easily operated by the user.
Is provided at a position near the exit. The control circuit 18 turns on the switch 17 while the push button switch 16 is being pressed. At the same time, if the output of the power supply detecting means 15 is LOW, the control circuit 18 operates so that the boost converter 6 operates.

When the boost converter 6 is stopped, its output voltage is almost only the terminal voltage of the power storage circuit 5, but when the boost converter 6 is operating, a constant DC of approximately 7 V is output. can do.
However, when the power supply 1 is connected, the charging circuit 4
Therefore, a stable power supply of about 7 V is always sent to the boost converter 6 irrespective of the terminal voltage of the power storage circuit 5.

The operation of the above configuration will be described.
First, when the user puts water into the liquid storage container 9 and then connects the connector 3, the output of the power supply 1 becomes 100 V, a charging current is supplied to the power storage circuit 5 via the charging circuit 4, and the charging of the power storage circuit 5 is performed. Begins to take place. At this time, the switching element 11 is turned on by the control circuit 18, and the AC voltage of 100 V is also supplied to the heater 10. The water in the container 9 reaches boiling. When boiling, the control circuit 18 turns off the switching element 11, and the water heater operation is completed.

In this state, when the user wants to use hot water, when the push button switch 16 is pressed, the switch 17 is turned on by the operation of the control circuit 18 and the electric pump 8 operates. As a result, the electric pump 8 is
The hot water inside is drawn out, so that the user can drink tea by receiving it with a teacup or the like.

At this time, a constant voltage of approximately 7 V is applied to the electric pump 8 from the power source 1 via the charging circuit 4, so that the electric pump 8 operates well regardless of the terminal voltage of the electric storage circuit 5. It becomes possible to close. The user can use the electric pump 8 very comfortably and conveniently by good operation.

Here, the switch 17 is kept on by the action of the control circuit 18 throughout the period when the push button switch 16 is turned on by the user, so that the operation of the electric pump 8 is also continued. .

When the user stops pressing the push button switch 16 at the time when the required amount of hot water is supplied, the switch 17 is turned off at that time by the operation of the control circuit 18, so that the electric pump 8 It stops and returns to the state before the push button switch 16 was pressed.

The power supply detecting means 15 outputs a HIGH signal to the control circuit 18 when the power supply 1 is connected, and the control circuit 18 operates the boost converter 6 when receiving the HIGH signal. Not to be performed.

Next, the operation when the connector 3 is removed will be described. Here, the output of the power supply detecting means 15 is LOW. In this case, since the charging circuit 4 does not operate, the power storage circuit 5 is not charged, and the energy stored when the power supply 1 was connected to the power storage circuit 5 is in a state of being accumulated.

However, even in this state, when the user operates the push button switch 16, the control circuit 18 is operated, the switch 17 is opened and closed, and the boost converter 6 is operated. The operation is almost the same as when the power supply 1 is connected.

In this embodiment , since the storage circuit 5 uses a large-capacity capacitor, the terminal voltage gradually decreases from the initial 7 V as energy is extracted. However, by operating boost converter 6, even when the terminal voltage of power storage circuit 5 is reduced to 2.5V, a substantially constant voltage of 7V can be output.

When the power supply 1 is cut off, power is not supplied to the heater 10. At this time, in this embodiment , the output of the power supply detecting means 15 is set to LOW. Since the control circuit 18 turns off the switching element 11 constituted by the relay, the current flowing through the coil of the relay is also cut, so that no unnecessary current is supplied. The configuration is such that the burden is reduced.

As described above, in this embodiment , the boost converter 6 connected to the power storage circuit 5 operates while the power supply 1 is cut off, and a substantially constant voltage is supplied to the electric pump 8. In addition, the electric pump 8 can exhibit stable tapping performance. Furthermore, since the boost converter 6 is configured to stop during the period when the electric pump 8 is stopped, an increase in energy consumption caused by the operation of the boost converter 6 can be suppressed. The rated capacity of the circuit 5 can be reduced, so that the device can be reduced in cost and size.

[0049] will be described with reference to FIGS. 3 and 4, a third reference example (Example 3) The present invention. The same components as those described in the first and second reference examples are denoted by the same reference numerals.

[0050] Figure 3 shows a third electric circuit diagram of a pot in the reference example of the present invention. In FIG. 3, the power source 1 is 100
It comprises an AC power supply 2 of V.50 or 60 Hz and a magnet type connector 3 which is easy to attach and detach. Power supply 1
Is connected to the charging circuit 4, and the output of the charging circuit 4 is connected to the power storage circuit 5.

The charging circuit 4 comprises a transformer for converting an AC voltage to a low voltage, a rectifying circuit for converting the output thereof to a DC, and the like. In the present embodiment , the power storage circuit 5 is constituted by a large-capacity capacitor using an electric double layer. The power storage circuit 5 is made up of, for example, a power transistor after a boost converter 6 that converts the voltage of the power storage circuit 5 to a substantially constant DC voltage higher than that by turning on and off the semiconductor switching element at a high frequency. The electric pump 8 is connected via the switching element 7.

The electric pump 8 draws out the liquid in the liquid storage container 9, and its rated voltage is the same as the output voltage value of the boost converter 6. In the present embodiment, the liquid storage container 9 is configured to be heated by the heater 10. The heater 10 is connected from the power supply 1 via a switching element 11 such as a relay. In the present embodiment , the heater 10 has a power of 1000 W, and has enough power to boil water in a state where water is put in the liquid storage container 9.

Switching element 7, switching element 1
1 and whether or not the boost converter 6 operates is controlled by the control circuit 19 to turn on and off.

The power supply detecting means 15 is connected to the output of the power supply 1, and when there is an output of the power supply 1, that is, when the AC power supply 2 is connected by the connector 3, the control circuit 19 is set to HIGH. When the AC power supply 2 is not output due to a disconnection of the connector 3 or a power failure, a LOW is output to the control circuit 19.

The control circuit 19 is also connected to a first switch 20 and a second switch 21 constituted by push-button switches. The first switch 20 and the second switch 21 can be easily operated by a user. It is provided near the outlet of the electric pump 8 so that it can be operated. When the second switch 21 is pressed within a predetermined time after the first switch 20 is pressed, the control circuit 19 turns on the switching element 7 while the second switch 21 is pressed. Further, within the predetermined time, the power supply detecting means 1
If the output of 5 is LOW, the control circuit 19 acts to cause the boost converter 6 to operate.

When the boost converter 6 is stopped, its output voltage is almost only the terminal voltage of the power storage circuit 5, but when the boost converter 6 is operating, a constant DC of approximately 7 V is output. can do.
However, when the power supply 1 is connected, the charging circuit 4
Therefore, a stable power supply of about 7 V is always sent to the boost converter 6 irrespective of the terminal voltage of the power storage circuit 5.

The operation of the above configuration will be described.
First, when the user puts water into the liquid storage container 9 and then connects the connector 3, the output of the power supply 1 becomes 100 V, a charging current is supplied to the power storage circuit 5 via the charging circuit 4, and the charging of the power storage circuit 5 is performed. Begins to take place. At this time, the switching element 11 is turned on by the control circuit 19 and an AC voltage of 100 V is also supplied to the heater 10. The water in the container 9 reaches boiling. In the case of boiling, the control circuit 19 turns off the switching element 11, and the water heating operation is completed.

When the user wants to use hot water in this state, the user first presses the first switch 20. Thereafter, when the second switch 21 is subsequently pressed, the control circuit 19
The switching element 7 is also turned on by the action of
The electric pump 8 operates and draws out hot water in the liquid storage container 9, so that the user can drink tea or the like by receiving it with a cup or the like.

At this time, a constant voltage of approximately 7 V is applied to the electric pump 8 from the power supply 1 via the charging circuit 4, so that the electric pump 8 operates well regardless of the terminal voltage of the electric storage circuit 5. It becomes possible to close. The user can use the electric pump 8 very comfortably and conveniently by good operation.

Here, the switching element 7 is connected to the control circuit 1
By the operation of 9, the second switch 21 is kept on throughout the period in which it is on, so that the operation of the electric pump 8 is also continued.

When the user stops pressing the second switch 21 at the time when the required amount of hot water is supplied, the control circuit 19 operates to switch the switching element 7 at that time.
Is turned off, the electric pump 8 stops, and returns to the state before the first switch 20 was pressed.

Here, when a predetermined time elapses after the first switch 20 is pressed and the second switch 21 is not pressed, the control circuit 19 switches the switching element 7.
Is turned off, and the operation returns to the state before the first switch 20 is pressed.

The control circuit 19 makes the ON signal of the second switch 21 valid only while the switching element 7 is ON. Therefore, if the user suddenly presses the second switch 21 or presses the second switch 21 again after the tapping operation is completed, the switching element 7 does not turn on, and therefore the hot water is discharged by the electric pump 8. It is not pumped. Therefore, even if the user accidentally presses the second switch 21, the hot water does not flow except for a predetermined time, which is very safe.

The power supply detection means 15 outputs a HIGH signal to the control circuit 19 when the power supply 1 is connected, and the control circuit 19 operates the boost converter 6 when receiving the HIGH signal. Not to be performed.

Next, the operation when the connector 3 is removed will be described. Here, the output of the power detection unit 15 is LOW. In this case, since the charging circuit 4 does not operate, the charging of the power storage circuit 5 is not performed.
Is in a state where the energy that was charged when the power supply 1 was connected is accumulated.

However, even in this state, when the user operates the first switch 20 and the second switch 21, the control circuit 19 operates, the switching element 7 is opened and closed, and the boost converter 6 operates. Therefore, the electric pump 8 operates almost in the same manner as when the power supply 1 is connected.

When the second switch 21 is pressed after the first switch 20 is pressed, it is regarded as valid and the electric pump 8 operates for a predetermined time after the first switch 20 is pressed. After that, the operation of the boost converter 6 is stopped and the second switch 2
1 is also invalidated.

When the power supply 1 is cut off, power is not supplied to the heater 10. At this time, in this embodiment, the output of the power supply detecting means 15 is set to LOW. Since the control circuit 19 turns off the switching element 11 formed by the relay, the current flowing through the coil of the relay is also cut, so that no unnecessary current is supplied. The configuration is such that the burden is reduced.

FIG. 4 is an operation waveform diagram of each part of the pot of FIG. 3 when the power supply 1 is cut off. Figure 4 below
This will be described with reference to FIG. At t1, the first switch 2
When 0 is pressed, the boost converter 6 is turned on, and if there is no subsequent operation, it is turned off after a predetermined time TA. Ginseng
In the example , TA is set to 5 seconds.

At time t2, even if the second switch 21 is pressed, since the predetermined time has already elapsed, the boost converter 6 and the electric pump 8 are kept off.

At time t3, when the first switch 20 is pressed again, the boost converter 6 is turned on in the same manner as at time t1, but the operation of the second switch 21 is performed at time t4 from the time until TA passes. Is performed, the electric pump 8 operates and the user can pour hot water.

At t4, boost converter 6
Has been started, it is possible to immediately supply a stable voltage of 7 V to the electric pump 8.

At t5, when the second switch 21 is turned off, the control circuit 19 turns off the switching element 7, and returns to the initial state. Therefore, even if the second switch 21 is pressed at t6, it is not accepted.

Further, since the value of the predetermined time TA is set to 5 seconds, the second time after the first switch 20 is pressed is set.
Until the switch 21 is pressed, the boost converter 6
Consumes energy of the power storage circuit 5 due to loss or the like generated by the operation of the device, but the value of the consumed energy is limited.

For this reason, even when the power storage circuit 5 having a small rated capacity is used, it is possible to prevent unnecessary energy from being excessively used in the boost converter 6 and to sufficiently use the tapping operation by the electric pump 8. Is what you can do.

In this embodiment , the first switch 20 and the second switch 21 are both of the push button type, but it is necessary to use this type. Instead, a contact may be closed by providing, for example, a knob and rotating it by hand.

In the present embodiment , the boost converter 6 is stopped when the power supply 1 is connected. However, if necessary, the boost converter 6 is operated even when the power supply 1 is connected. It doesn't matter.

[0078] be described with reference to FIGS. 5 and 6, a fourth reference example (Example 4) The present invention. The same components as those described in the first to third reference examples are denoted by the same reference numerals.

[0079] Figure 5 shows an electrical circuit diagram of the pot in the fourth reference example of the present invention. In FIG. 5, the power source 1 is 100
It comprises an AC power supply 2 of V.50 or 60 Hz and a magnet type connector 3 which is easy to attach and detach. Power supply 1
Is connected to the charging circuit 4, and the output of the charging circuit 4 is connected to the power storage circuit 5.

The charging circuit 4 comprises a transformer for converting an AC voltage to a low voltage, a rectifying circuit for converting the output thereof to a DC, and the like. In the present embodiment , the power storage circuit 5 is constituted by a large-capacity capacitor using an electric double layer. The power storage circuit 5 is made up of, for example, a power transistor after a boost converter 6 that converts the voltage of the power storage circuit 5 to a substantially constant DC voltage higher than that by turning on and off the semiconductor switching element at a high frequency. The electric pump 8 is connected via the switching element 7.

The electric pump 8 draws out the liquid in the liquid storage container 9, and its rated voltage has the same value as the output voltage value of the boost converter 6. In the present embodiment , the liquid storage container 9 is configured to be heated by the heater 10. The heater 10 is connected from the power supply 1 via a switching element 11 such as a relay. In the present embodiment , the heater 10 has a power of 1000 W, and has enough power to boil water in a state where water is put in the liquid storage container 9.

Switching element 7, switching element 1
1 and the step-up converter 6 are both controlled to be turned on and off by the control circuit 22.

The power supply detecting means 15 is connected to the output of the power supply 1, and when there is an output of the power supply 1, that is, when the AC power supply 2 is connected by the connector 3, the control circuit 22 is set to HIGH. It outputs a LOW signal to the control circuit 22 when the connector 3 is disconnected or the AC power supply 2 is not output due to a power failure or the like.

The control circuit 22 is also connected to a first switch 20 and a second switch 21 constituted by push-button switches, so that the first switch 20 and the second switch 21 can be easily operated by the user. It is provided near the outlet of the electric pump 8 so that it can be operated. When the second switch 21 is pressed within the first predetermined time after the first switch 20 is pressed, the control circuit 22
The switching element 7 is turned on while the switch 21 is pressed. Further, the control circuit 22 sets the second time within a second predetermined time from the end of the tapping operation by the electric pump 8.
When the switch 21 is pressed, the second switch 2
The operation of the boost converter 6 is performed while 1 is pressed. In addition, the first predetermined time and the second predetermined time
Within a predetermined period of time, the output of the power supply
If it is W, the control circuit 22 acts to cause the boost converter 6 to operate.

When boost converter 6 is stopped, its output voltage is almost only the terminal voltage of power storage circuit 5, but when boost converter 6 is operating, it outputs a DC of a constant voltage of approximately 7V. can do.
However, when the power supply 1 is connected, the charging circuit 4
Therefore, a stable power supply of about 7 V is always sent to the boost converter 6 irrespective of the terminal voltage of the power storage circuit 5.

The operation of the above configuration will be described.
First, when the user puts water into the liquid storage container 9 and then connects the connector 3, the output of the power supply 1 becomes 100 V, a charging current is supplied to the power storage circuit 5 via the charging circuit 4, and the charging of the power storage circuit 5 is performed. Begins to take place. At this time, the switching element 11 is turned on by the control circuit 22 and an AC voltage of 100 V is also supplied to the heater 10. The water in the container 9 reaches boiling. In the case of boiling, the control circuit 22 turns off the switching element 11, and the water heating operation is completed.

When the user wants to use hot water in this state, he first presses the first switch 20. Then, when the second switch 21 is pressed subsequently, the control circuit 22
The switching element 7 is also turned on by the action of
The electric pump 8 operates and draws out hot water in the liquid storage container 9, so that the user can drink tea or the like by receiving it with a cup or the like.

At this time, a constant voltage of approximately 7 V is applied from the power supply 1 to the electric pump 8 via the charging circuit 4, so that the electric pump 8 operates well regardless of the terminal voltage of the electric storage circuit 5. It becomes possible to close. The user can use the electric pump 8 very comfortably and conveniently by good operation.

Here, the switching element 7 is connected to the control circuit 2
By the operation of 2, the second switch 21 is kept on throughout the period that the second switch 21 is on, so that the operation of the electric pump 8 is also continued.

When the user stops pressing the second switch 21 when the required amount of hot water has been supplied, the control circuit 22 operates to switch the switching element 7 at that time.
Is turned off, the electric pump 8 stops, and returns to the state before the first switch 20 was pressed.

Here, after the first switch 20 is depressed, the first switch 20 is depressed while the second switch 21 is not depressed.
When the predetermined time elapses, the control circuit 22 turns off the switching element 7 and also returns to the state before the first switch 20 was pressed.

The control circuit 22 makes the ON signal of the second switch 21 valid only while the switching element 7 is ON. Therefore, even if the user suddenly presses the second switch 21 or presses the second switch 21 again after the tapping operation is completed, the switching element 7 does not turn on. It is not pumped. However, in the present reference example , the second switch 21 is valid within the second predetermined time, and the tapping is performed again by pressing the second switch 21 during that time. Accordingly, for example, when it is desired to pour hot water into a plurality of teacups, when it is desired to once release the hand from the second switch 21 and then want to add hot water again, or when the hand pressing the second switch 21 shakes and turns off once. In such a case, if the first switch 20 is pressed only once at first, the hot water can be turned on / off by pressing and releasing the second switch 21 thereafter. , Very convenient.

Normally, when it is desired to fill a plurality of cups one by one, the time from the end of one bath to the reception of the next cup is less than 5 seconds. The next tapping can be started within the second predetermined time.

[0094] Even if the user presses the second switch 21 by mistake, hot water is not discharged except for the first predetermined time and the second predetermined time, which is very safe.

The power supply detecting means 15 outputs a HIGH signal to the control circuit 22 when the power supply 1 is connected, and the control circuit 22 outputs the HIGH signal to the boost converter 6 when receiving the HIGH signal. No action is taken.

Next, the operation when the connector 3 is removed will be described. Here, the output of the power supply detecting means 15 is LOW. In this case, since the charging circuit 4 does not operate, the charging of the power storage circuit 5 is not performed.
Is in a state where the energy that was charged when the power supply 1 was connected is accumulated.

However, even in this state, when the user operates the first switch 20 and the second switch 21, the control circuit 22 operates, the switching element 7 is opened and closed, and the boost converter 6 operates. Therefore, the electric pump 8 operates almost in the same manner as when the power supply 1 is connected.

When the second switch 21 is pressed after the first switch 20 is pressed, the operation of the electric pump 8 which is regarded as valid and is limited to 5 seconds after the first switch 20 is pressed. Thereafter, the operation of the boost converter 6 is stopped, and the second switch 21 is disabled.

When the second predetermined time has elapsed after the operation of the electric pump 8 has been completed, the boost converter 6 is also stopped and the second switch 21
Becomes invalid.

When the power supply 1 is cut off, power is not supplied to the heater 10. At this time, in this embodiment , the output of the power supply detection means 15 is set to LOW. Since the control circuit 22 turns off the switching element 11 constituted by the relay, the current flowing through the coil of the relay is also cut, so that no unnecessary current is supplied. The configuration is such that the burden is reduced.

FIG. 6 is an operation waveform diagram of each part of the pot of FIG. 5 when the power supply 1 is cut off. Figure 6 below
This will be described with reference to FIG. At t1, the first switch 2
When 0 is pressed, the boost converter 6 is turned on, and if there is no subsequent operation, it is turned off after the first predetermined time TA.
Here, TA is 10 seconds according to the output signal from the power supply detecting means 15 when the power supply 1 is connected,
When the power supply 1 is not connected, the time is 5 seconds.

At t2, even if the second switch 21 is pressed, the first predetermined time has already elapsed, so that the boost converter 6 and the electric pump 8 are kept off.

At time t3, when the first switch 20 is pressed again, the boost converter 6 is turned on in the same manner as at time t1, but the operation of the second switch 21 is performed at time t4 halfway from that time to after passing TA. Is performed, the electric pump 8 operates and the user can pour hot water.

At t4, boost converter 6
Has been started, it is possible to immediately supply a stable voltage of 7 V to the electric pump 8.

At time t5, when the second switch 21 is turned off, the control circuit 22 turns off the switching element 7, and returns to the initial state after a lapse of a second predetermined time TB. Therefore, even if the second switch 21 is pressed at t6, it is not accepted.

At time t7, when the first switch 20 is pressed again and the second switch 21 is pressed for the time from t8 to t9, the above-mentioned time t3 to t5
Is exactly the same as

At t10, a second predetermined time TB from t9
Indicates that the second switch 21 has been pressed again before elapse.

In this embodiment, since the second switch 21 is effective during the period of TB, the electric pump 8 operates and the tapping is performed while the second switch 21 is pressed.

At time t11, since the second predetermined time TB has ended, it becomes invalid as at time t6, and neither the boost converter 6 nor the electric pump 8 operates.

[0110] Also, for both the value of the first predetermined time TA for a second predetermined time period TB, the present embodiment, both 5
Since the time is set to seconds, the energy of the power storage circuit 5 is reduced by a loss caused by the operation of the boost converter 6 between the time when the first switch 20 is pressed and the time when the second switch 21 is pressed. Is consumed, but the value of the consumed energy is limited.

However, TA and TB may have different values if necessary, and the effect is not changed in such a case.

By the operation described above, even when the power storage circuit 5 having a small rated capacity is used, it is possible to prevent unnecessary energy from being excessively used in the boost converter 6. The tapping operation can be sufficiently used.

In this embodiment , the first switch 20 and the second switch 21 are both of the push button type, but it is necessary to use this type. Instead, a contact may be closed by providing, for example, a knob and rotating it by hand.

In this embodiment , the boost converter 6 is stopped when the power supply 1 is connected. However, if necessary, the boost converter 6 is operated even when the power supply 1 is connected. It doesn't matter.

[0115] be described with reference to FIGS. 7 and 8, a fifth reference example (Example 5) The present invention. The same components as those described in the first to fourth reference examples are denoted by the same reference numerals.

[0116] Figure 7 shows an electrical circuit diagram of the pot in a fifth exemplary embodiment of the present invention. In FIG. 7, the power source 1 is 100
It comprises an AC power supply 2 of V.50 or 60 Hz and a magnet type connector 3 which is easy to attach and detach. Power supply 1
Is connected to the charging circuit 4, and the output of the charging circuit 4 is connected to the power storage circuit 5.

The charging circuit 4 comprises a transformer for converting an AC voltage to a low voltage, a rectifying circuit for converting the output thereof to a DC, and the like. In the present embodiment , the power storage circuit 5 is constituted by a large-capacity capacitor using an electric double layer. The power storage circuit 5 is made up of, for example, a power transistor after a boost converter 6 that converts the voltage of the power storage circuit 5 to a substantially constant DC voltage higher than that by turning on and off the semiconductor switching element at a high frequency. The electric pump 8 is connected via the switching element 7.

The electric pump 8 pumps out the liquid in the liquid storage container 9, and its rated voltage is the same as the output voltage value of the boost converter 6. In the present embodiment , the liquid storage container 9 is configured to be heated by the heater 10. The heater 10 is connected from the power supply 1 via a switching element 11 such as a relay. In the present embodiment , the heater 10 has a power of 1000 W, and has enough power to boil water in a state where water is put in the liquid storage container 9. The output of the boost converter 6
The spotlight 13 is also connected via the switching element 12.

The spotlight 13 is provided in the vicinity of the outlet of the electric pump 8, and displays the position where the user receives hot water in a container such as a cup of tea when the user goes out of hot water.

Switching element 7, switching element 1
1, the on / off control of the switching element 12 and the boost converter 6 is controlled by the control circuit 23.

The power supply detecting means 15 is connected to the output of the power supply 1, and when there is an output of the power supply 1, that is, when the AC power supply 2 is connected by the connector 3, the control circuit 23 is set to HIGH. When the AC power supply 2 is not output due to the disconnection of the connector 3 or a power failure or the like, it outputs LOW to the control circuit 23.

The control circuit 23 is also connected to a first switch 20 and a second switch 21 constituted by push-button switches. The first switch 20 and the second switch 21 can be easily operated by a user. It is provided near the outlet of the electric pump 8 so that it can be operated. When the second switch 21 is pressed within a predetermined time after the first switch 20 is pressed, the control circuit 23 turns on the switching element 7 while the second switch 21 is pressed. Further, within the predetermined time, the power supply detecting means 1
If the output of 5 is LOW, the control circuit 23 operates to cause the boost converter 6 to operate.

When boost converter 6 is stopped, its output voltage is almost the same as the terminal voltage of power storage circuit 5, but when boost converter 6 is operating, it outputs a constant voltage DC of approximately 7V. can do.
However, since the charging circuit 4 is operating when the power supply 1 is connected, regardless of the terminal voltage of the power storage circuit 5,
A stable power supply of about 7 V is always sent to the boost converter 6.

The operation of the above configuration will be described.
First, when the user puts water into the liquid storage container 9 and then connects the connector 3, the output of the power supply 1 becomes 100 V, a charging current is supplied to the power storage circuit 5 via the charging circuit 4, and the charging of the power storage circuit 5 is performed. Begins to take place. At this time, the switching element 11 is turned on by the control circuit 23 and an AC voltage of 100 V is also supplied to the heater 10, so that the heater 10 generates 1000 W of heat and heats the liquid storage container 9, so that The water in the container 9 reaches boiling. When boiling, the control circuit 23 turns off the switching element 11, and the water heating operation is completed.

When the user wants to use hot water in this state, the user first presses the first switch 20. Subsequently, when the second switch 21 is subsequently pressed, the control circuit 23
Then, the switching element 7 and the switching element 12 are turned on, the electric pump 8 is operated, and the spotlight 13 is turned on at the same time. As a result, the spotlight 13 is turned on and the electric pump 8 is
The hot water inside is drawn out, so that the user can drink tea by receiving it with a teacup or the like.

At this time, a constant voltage of approximately 7 V is applied to the electric pump 8 and the spotlight 13 from the power supply 1 via the charging circuit 4, so that the electric pump 8
Good operation can be performed irrespective of the terminal voltage. The user uses the electric pump 8 and the spotlight 1
3 good operation makes it very comfortable and convenient to use.

Here, the switching element 7 and the switching element 12 are kept on by the action of the control circuit 23 throughout the period when the second switch 21 is on, so that the operation of the electric pump 8 and the spot Light 13
Is also continuously performed.

When the user stops pressing the second switch 21 at the time when the required amount of hot water is supplied, the control circuit 23 operates to switch the switching element 7 at that time.
And the switching element 12 is turned off, the electric pump 8 is stopped, the spotlight 13 is turned off, and the state returns to the state before the first switch 20 was pressed. Here, if a predetermined time has elapsed after the first switch 20 was pressed and the second switch 21 was not pressed, the control circuit 23 turns off the switching element 7 and the switching element 12, and the first circuit 20 is also turned off. The operation of returning to the state before the switch 20 is pressed is performed.

The control circuit 23 makes the ON signal of the second switch 21 valid only while the switching elements 7 and 12 are on. Therefore, if the user suddenly presses the second switch 21 or presses the second switch 21 again after the tapping operation is completed, the switching element 7 does not turn on, and therefore the hot water is discharged by the electric pump 8. It is not pumped. Therefore, even if the user presses the second switch 21 by mistake, the hot water does not flow except for a predetermined time, which is very safe.

Power supply detecting means 15 outputs a HIGH signal to control circuit 23 when power supply 1 is connected, and control circuit 23 operates boost converter 6 when it receives a HIGH signal. Not to be performed.

Next, the operation when the connector 3 is removed will be described. Here, the output of the power detection unit 15 is LOW. In this case, since the charging circuit 4 does not operate, the charging of the power storage circuit 5 is not performed.
Is in a state where the energy that was charged when the power supply 1 was connected is accumulated.

However, even in this state, when the user operates the first switch 20 and the second switch 21, the control circuit 23 operates, and the switching elements 7 and 12 are opened and closed. Since the converter 6 operates, the electric pump 8 and the spotlight 13 operate almost in the same manner as when the power supply 1 is connected.

When the second switch 21 is depressed after the first switch 20 is depressed, the operation of the electric pump 8 is considered to be effective for a predetermined time after the first switch 20 is depressed. After that, the operation of the boost converter 6 is stopped, the spotlight 13 is turned off, and the second switch 21 is disabled.

When the power supply 1 is cut off, power is not supplied to the heater 10, but at this time, in this embodiment , the output of the power supply detection means 15 is set to LOW. Since the control circuit 23 turns off the switching element 11 formed of a relay, the current flowing through the coil of the relay is also cut, so that no unnecessary current is supplied. The configuration is such that the burden is reduced.

FIG. 8 is an operation waveform diagram of each part of the pot of FIG. 7 in a state where the power supply 1 is cut off. This will be described below with reference to FIG. At t1, when the first switch 20 is pressed, the boost converter 6 and the spotlight 13 are turned on, and if there is no subsequent operation, they are turned off after a predetermined time TA. In this reference example , TA is set to 5 seconds.

At t2, even if the second switch 21 is pressed, since the predetermined time has already elapsed, the boost converter 6, the spotlight 13 and the electric pump 8 are kept off.

At time t3, when first switch 20 is turned on again, boost converter 6 and spotlight 13 are turned on in the same manner as at time t1, but from that time on, TA
When the operation of the second switch 21 is performed at t4 halfway through the process, the electric pump 8 operates, and the user can pour hot water.

At time t4, boost converter 6
Has been started, it is possible to immediately supply a stable voltage of 7 V to the electric pump 8.

At t5, when the second switch 21 is turned off, the control circuit 23 turns off the switching elements 7 and 12, and returns to the initial state. Therefore,
Even if the second switch 21 is pressed at t6, it is not accepted.

Further, since the value of the predetermined time TA is set to 5 seconds, the second time after the first switch 20 is pressed is set.
Until the switch 21 is pressed, the boost converter 6
Consumes energy of the power storage circuit 5 due to loss or the like generated by the operation of the device, but the value of the consumed energy is limited.

For this reason, even when the power storage circuit 23 having a small rated capacity is used, it is possible to prevent unnecessary energy from being excessively used in the boost converter 6, and to sufficiently use the tapping operation by the electric pump 8. Is what you can do.

In this embodiment , the first switch 20 and the second switch 21 are both of the push button type, but it is necessary to use this type. Instead, a contact may be closed by providing, for example, a knob and rotating it by hand.

In this embodiment , the boost converter 6 is stopped when the power supply 1 is connected. However, if necessary, the boost converter 6 operates even when the power supply 1 is connected. It does not matter.

[0144] will be described with reference to FIGS. 9 and 10 for the first embodiment (Embodiment 1) The present invention. The same components as those described in the first to fifth reference examples are denoted by the same reference numerals.

FIG. 9 is an electric circuit diagram of a pot according to the first embodiment of the present invention. In FIG. 9, the power source 1 is 100
It comprises an AC power supply 2 of V.50 or 60 Hz and a magnet type connector 3 which is easy to attach and detach. Power supply 1
Is connected to the charging circuit 4, and the output of the charging circuit 4 is connected to the power storage circuit 5.

The charging circuit 4 is composed of a transformer for converting an AC voltage to a low voltage, a rectifying circuit for converting the output thereof to a DC, and the like. In the present embodiment, the power storage circuit 5 is configured by a large-capacity capacitor using an electric double layer. The power storage circuit 5 is made up of, for example, a power transistor after a boost converter 6 that converts the voltage of the power storage circuit 5 to a substantially constant DC voltage higher than that by turning on and off the semiconductor switching element at a high frequency. The electric pump 8 is connected via the switching element 7.

The electric pump 8 pumps out the liquid in the liquid storage container 9, and its rated voltage has the same value as the output voltage value of the boost converter 6. In the present embodiment, the liquid storage container 9 is configured to be heated by the heater 10. The heater 10 is connected from the power supply 1 via a switching element 11 such as a relay. In the present embodiment, the heater 10 has a power of 1000 W, and has enough power to boil water in a state where water is put in the liquid storage container 9. The output of the boost converter 6 is supplied to the spotlight 13 via the switching element 12.
Is connected. The spotlight 13 is provided in the vicinity of the outlet of the electric pump 8, and displays the position where the user receives hot water in a container such as a cup when the user goes out of the bath.

Switching element 7, Switching element 1
The control circuit 24 controls ON / OFF of the operation of the switching element 12, the switching element 12, and the boost converter 6.

The power supply detecting means 15 is connected to the output of the power supply 1, and when there is an output of the power supply 1, that is, when the AC power supply 2 is connected by the connector 3, the control circuit 24 is set to HIGH. When the AC power supply 2 is not output due to a disconnection of the connector 3 or a power failure, a LOW is output to the control circuit 24.

The control circuit 24 is also connected to a first switch 20 and a second switch 21 constituted by push-button switches. The first switch 20 and the second switch 21 can be easily operated by a user. It is provided near the outlet of the electric pump 8 so that it can be operated. When the second switch 21 is pressed within a first predetermined time after the first switch 20 is pressed, the control circuit 24 outputs the second
The switching element 7 is turned on while the switch 21 is pressed. Further, the control circuit 24 operates the second switch 21 even when the second switch 21 is pressed within a second predetermined time after the hot water supply operation by the electric pump 8 is completed.
The operation of the boost converter 6 is performed while is pressed.

The first predetermined time and the second predetermined time
Within a predetermined period of time, the output of the power supply
If it is W, the control circuit 24 acts to cause the boost converter 6 to operate.

When boost converter 6 is stopped, its output voltage is almost the same as the terminal voltage of power storage circuit 5, but when boost converter 6 is operating, a constant DC voltage of approximately 7 V is output. can do.
However, when the power supply 1 is connected, the charging circuit 4
Therefore, a stable power supply of about 7 V is always sent to the boost converter 6 irrespective of the terminal voltage of the power storage circuit 5.

The operation of the above configuration will be described.
First, when the user puts water into the liquid storage container 9 and then connects the connector 3, the output of the power supply 1 becomes 100 V, a charging current is supplied to the power storage circuit 5 via the charging circuit 4, and the charging of the power storage circuit 5 is performed. Begins to take place. At this time, the switching element 11 is turned on by the control circuit 24, and an AC voltage of 100 V is also supplied to the heater 10, so that 1000W of heat is generated from the heater 10 to heat the liquid storage container 9, thereby causing the liquid storage container 9 to be heated. The water in the container 9 reaches boiling. In the case of boiling, the control circuit 24 turns off the switching element 11, and the water heating operation is completed.

When the user wants to use hot water in this state, the user first presses the first switch 20. Thereafter, when the second switch 21 is subsequently pressed, the control circuit 24
Then, the switching element 7 and the switching element 12 are turned on, the electric pump 8 is operated, and the spotlight 13 is turned on at the same time. As a result, the spotlight 13 is turned on and the electric pump 8 is
The hot water inside is drawn out, so that the user can drink tea by receiving it with a teacup or the like.

At this time, a constant voltage of approximately 7 V is applied to the electric pump 8 and the spotlight 13 from the power supply 1 via the charging circuit 4, so that the electric pump 8
Good operation can be performed irrespective of the terminal voltage. The user uses the electric pump 8 and the spotlight 1
3 good operation makes it very comfortable and convenient to use.

Here, the switching element 7 and the switching element 12 are kept on during the period in which the second switch 21 is turned on by the operation of the control circuit 24. Spotlight 1
The lighting of 3 is also continued.

When the user stops pressing the second switch 21 when the required amount of hot water is supplied, the control circuit 24 operates to switch the switching element 7 at that time.
And the switching element 12 is turned off, the electric pump 8 is stopped, the spotlight 13 is turned off, and the state returns to the state before the first switch 20 was pressed.

Here, after the first switch 20 is depressed, the first switch 20 is depressed while the second switch 21 is not depressed.
When the predetermined time elapses, the control circuit 24 turns off the switching element 7 and the switching element 12, and also the first
The operation of returning to the state before the switch 20 is pressed is performed.

The control circuit 24 makes the ON signal of the second switch 21 valid only while the switching elements 7 and 12 are ON. Therefore, if the user suddenly presses the second switch 21 or presses the second switch 21 again after the tapping operation is completed, the switching element 7 does not turn on, and therefore the hot water is discharged by the electric pump 8. It is not pumped. However, in this embodiment, within the second predetermined time, the second
Since the switch 21 is effective, the second
When the switch 21 is pressed, hot water is discharged. Therefore, for example, when it is desired to pour hot water into a plurality of teacups, when it is desired to release the hand from the second switch 21 and then to add hot water again, or when the hand pressing the second switch 21 shakes and turns off once. When the first switch 20 is pressed only once at the beginning, the second
By pressing or releasing the switch 21 of the above, it is possible to turn on / off the hot water, which is very convenient.

Normally, when it is desired to fill a plurality of teacups one after another, the time from the end of one bathing to the next teacup is 5 seconds or less. The next tapping can be started within the second predetermined time.

Even if the user presses the second switch 21 by mistake, hot water is not discharged except during the first predetermined time and the second predetermined time, which is very safe.

The power supply detecting means 15 outputs a HIGH signal to the control circuit 24 when the power supply 1 is connected, and the control circuit 24 outputs the HIGH signal to the boost converter 6 when receiving the HIGH signal. No action is taken.

Next, the operation when the connector 3 is removed will be described. Here, the output of the power supply detecting means 15 is LOW. In this case, since the charging circuit 4 does not operate, the charging of the power storage circuit 5 is not performed.
Is in a state where the energy that was charged when the power supply 1 was connected is accumulated.

However, even in this state, when the user operates the first switch 20 and the second switch 21, the control circuit 24 operates, and the switching elements 7 and 12 are opened and closed. Since the converter 6 operates, the electric pump 8 and the spotlight 13 operate almost in the same manner as when the power supply 1 is connected.

When the second switch 21 is pressed after the first switch 20 is pressed, the operation of the electric pump 8 which is regarded as valid and is limited to 5 seconds after the first switch 20 is pressed. Thereafter, the operation of the boost converter 6 is stopped, the spotlight 13 is turned off, and the second switch 21 is disabled.

When the second predetermined time has elapsed after the operation of the electric pump 8 has been completed, the boost converter 6 is also stopped and the second switch 21 is disabled.

When the power supply 1 is cut off, power is not supplied to the heater 10. At this time, in this embodiment, the output of the power supply detection means 15 is set to LOW. Since the control circuit 24 turns off the switching element 11 formed of a relay, the current flowing through the coil of the relay is also cut, so that no unnecessary current is supplied. The configuration is such that the burden is reduced.

FIG. 10 is an operation waveform diagram of each part of the pot of FIG. 9 when the power supply 1 is cut off. Figure 1 below
Description will be made using 0. At t1, when the first switch 20 is pressed, the boost converter 6 and the spotlight 13 are turned on, and if there is no subsequent operation, they are turned off after the first predetermined time TA. Here, TA is the power detection means 1
According to the output signal from 5, power supply 1 is connected for 10 seconds, and power supply 1 is not connected for 5 seconds.

At t2, even if the second switch 21 is pressed, since the first predetermined time has already elapsed, the boost converter 6, the spotlight 13 and the electric pump 8
Keep the off state.

At time t3, when first switch 20 is turned on again, boost converter 6 and spotlight 13 are turned on in the same manner as at time t1.
When the operation of the second switch 21 is performed at t4 halfway through the process, the electric pump 8 operates, and the user can pour hot water.

At time t4, boost converter 6
Has been started, it is possible to immediately supply a stable voltage of 7 V to the electric pump 8.

At time t5, when the second switch 21 is turned off, the control circuit 24 turns off the switching element 7, and returns to the initial state after a lapse of a second predetermined time TB. Therefore, even if the second switch 21 is pressed at t6, it is not accepted.

At time t7, when the first switch 20 is pressed again and the second switch 21 is pressed for the time from t8 to t9, the above-described time t3 to t5
Is exactly the same as

At t10, a second predetermined period TB from t9
Indicates that the second switch 21 has been pressed again before elapse.

In the present embodiment, since the second switch 21 is effective during the period TB, the electric pump 8 operates and the hot water is discharged while the second switch 21 is pressed.

At time t11, since the second predetermined time TB has ended, it becomes invalid as at time t6, and neither the boost converter 6 nor the electric pump 8 operates.

In this embodiment, both of the values of the first predetermined time TA and the second predetermined time TB are 5
Since the time is set to seconds, the energy of the power storage circuit 5 is reduced by a loss caused by the operation of the boost converter 6 between the time when the first switch 20 is pressed and the time when the second switch 21 is pressed. Is consumed, but the value of the consumed energy is limited.

However, TA and TB may have different values if necessary, and the effect is not changed in such a case.

By the operation described above, even when the power storage circuit 5 having a small rated capacity is used, it is possible to prevent the unnecessary energy from being excessively used in the boost converter 6. The tapping operation can be sufficiently used.

In this embodiment, the first switch 20 and the second switch 21 are both of the push-button type, but it is necessary to use this type. Instead, a contact may be closed by providing, for example, a knob and rotating it by hand.

In this embodiment, the boost converter 6 is stopped when the power supply 1 is connected. However, if necessary, the boost converter 6 operates even when the power supply 1 is connected. It does not matter.

[0182]

As is apparent from the above description, the present invention
Is a detachable power supply, a power storage circuit, a liquid storage container, a first switch, a second switch, a boost converter connected to the power storage circuit, and a liquid in the liquid storage container. An electric pump, a spotlight provided near an outlet of the electric pump, a power detection unit for detecting an output of the power supply, and a control circuit, wherein the power storage circuit is charged by a current from the power supply. The electric pump is operated when the second switch is operated within a first predetermined time after the operation of the first switch and within a second predetermined time after the operation of the electric pump is completed. The boost converter and the spotlight start operating when the first switch is operated, and stop when the first predetermined time and the second predetermined time have elapsed, Electric In the state where the power is cut off, the electric pump and the spotlight are configured to be supplied with electricity from the power storage circuit via the boost converter, so that when pouring hot water, the power is in a state where the power is cut off. Since the electric pump operates, it can be used comfortably. Even if the operation of the electric pump is stopped once, if the operation is within the second predetermined time, the hot water can be continuously supplied only by operating the second switch again. The burden of electricity generated from the power storage circuit for operation is small. As described above, the power storage circuit can be reduced in size and cost. in addition,
During the period when the second switch is effectively operated, the spotlight is turned on, so that it can be used very safely and comfortably. As described above, the power storage circuit can be reduced in size and cost.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram of a pot according to a first reference example of the present invention.

FIG. 2 is an electric circuit diagram of a pot according to a second reference example of the present invention.

FIG. 3 is an electric circuit diagram of a pot according to a third reference example of the present invention.

FIG. 4 is an operation waveform diagram of the same pot.

FIG. 5 is an electric circuit diagram of a pot according to a fourth reference example of the present invention.

FIG. 6 is an operation waveform diagram of the same pot.

FIG. 7 is an electric circuit diagram of a pot according to a fifth reference example of the present invention.

FIG. 8 is an operation waveform diagram of the same pot.

FIG. 9 is an electric circuit diagram of a pot according to the first embodiment of the present invention.

FIG. 10 is an operation waveform diagram of the same pot.

FIG. 11 is an electric circuit diagram of a conventional pot.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 power supply 5 power storage circuit 6 boost converter 8 electric pump 9 liquid storage container 13 spotlight 14, 18, 19, 22, 23, 24 control circuit 15 power supply detecting means 17 switch 20 first switch 21 second switch

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Takayumi Fukuda 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. In-company (56) References JP-A-6-133865 (JP, A) JP-A-3-297421 (JP, A) JP-A-5-122871 (JP, A) JP-A-60-87083 (JP, A) JP-A-4-22309 (JP, A) JP-A-3-149015 (JP, A) JP-A-6-7623 (JP, U) JP-A-3-17730 (JP, U)

Claims (1)

(57) [Claims] 1. A removable power supply, a power storage circuit, a liquid storage container, a first switch, a second switch, a boost converter connected to the power storage circuit, and a liquid in the liquid storage container. An electric pump for pumping, a spotlight provided near an outlet of the electric pump, a power supply detecting unit for detecting an output of the power supply, and a control circuit, wherein the power storage circuit is charged by a current from the power supply. And the second switch is operated within a first predetermined time after the first switch is operated and within a second predetermined time after the operation of the electric pump is completed. Operates when the boost converter and the spotlight start operating when the first switch is operated, and stop when the first predetermined time and the second predetermined time have elapsed, The electric A pot to which the electric pump and the spotlight are supplied with electricity from the power storage circuit via the boost converter when the power source is cut off.