JPS60246718A - Electric pot - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Technical Field) The present invention relates to an electric water heater that stores a liquid such as water in a container and heats the liquid using a heater. This relates to an electric water heater that dispenses hot water.

(Prior art) Conventionally, in this type of electric water heater, a manual on-off valve is inserted in the liquid pouring path, and this on-off valve is used to start and stop the hot water supply, so when hot water is supplied to a receiving container such as a pot. During hot water supply, it is necessary to stay at the place and always pay attention to the amount of hot water being supplied, and when the desired amount is reached, it is necessary to close the on-off valve, which is inconvenient because one cannot leave the place.

(Purpose) The present invention has been made in view of the above points, and is capable of automatically stopping the hot water supply when the desired amount of hot water has been supplied, thereby completely eliminating the inconvenience of the conventional method. .

(Example) Fig. 1 is a front view showing an embodiment of the electric water heater of the present invention, Fig. 2 is a schematic cross-sectional configuration diagram from the upper side of the same, and Fig. 3 is an electric circuit diagram of the same.

First, in FIGS. 1 and 2, the vessel body has a 1tfi side U-shape and has a space 2 for placing a tip, etc.
A seat 3 is formed at the bottom of the space 2, and a container 4 for storing liquid is provided above the space 2. , 5 is a removable inner lid 7j that seals the opening of the container 4, and 6 is a container body 1.
an outer lid that is pivotally attached to the upper end so as to be openable and closable and covers the upper part of the inner lid 5;
7 is a heating zone consisting of a heater for boiling water and for keeping warm;
Wrap it around the outer circumference of the upper end of the container 4. 8I-i A steam passageway with one end opening in the upper part of the container 4 and the other end opening outside the container body 1,
Steam generated within the container 4 is released to the outside. Reference numeral 9 denotes a boiling sensor located near the outer end of the steam passage 8 so as to be in contact with the released steam, and is composed of a switch that detects the boiling state of the liquid based on the steam temperature and turns off, for example. Reference numeral 10 denotes a spouting channel having one end opened in the inner bottom surface of the container 4 and the other end opened in the upper part of the space 2, into which a magnetic on-off valve 11 and a flow control valve 12 are inserted in series.

13 a hot water supply amount setting timer for controlling the I/'i on-off valve 11; 14 a control knob for operating the t/'i flow control valve 12; 15 a hot water outlet switch that can be turned on and off at will; 16
Reboiling switch that turns ON only when u is pressed, 17 is vessel 1
A water level display tube (not shown) that communicates with the inside of the container 4 is disposed inside the water level display section provided on the front surface of the container 4. Reference numeral 18 is a container for coffee liquid, and reference numeral 19 is a coffee basket containing a filter and containing coffee powder.

The above-mentioned flow rate regulating valve 12 is used to vary the flow path area of the pouring path 10, and by varying the flow path area, the flow rate can be made substantially constant regardless of the height of the water level in the container 4. container 4
In the case where the liquid inside the container is poured out to the outside by gravity, the flow rate changes greatly depending on the height of the water level in the container 4, so the flow rate control valve 12 throttles the q flow path when the water level is high, and when the water level is low. The flow path is widened to keep the flow rate per unit time approximately constant. By attaching a scale corresponding to the adjustment knob 14 to match the water level scale of the water level display section 17, it is possible to accurately adjust the flow rate control valve 12 according to the water level.

The hot water supply amount setting timer 13 is used to temporally control the hot water supply amount, that is, the amount of hot water dispensed from the spout path 10.The timer 13 determines the relationship between the flow rate set by the flow rate control valve 12 and time in advance through experiments, etc. It is attached as a scale.

Next, in the electric circuit diagram of FIG. 3, the 2 or/i water heater forms a series circuit with the reboiling thermal switch 21, and the circuit is connected to the heat retention heater 22 and the heat retention thermal switch 21. It is connected in parallel to a series circuit consisting of a switch 23, and this parallel circuit is connected via a temperature fuse 24 between both terminals of an AC power source. The thermal switch 21 and 23 sense the temperature change of the liquid in the container 4.
For example, it turns OFF when the temperature reaches 85℃, and turns ON when it drops below 80℃.
For example, it turns OFF when the temperature reaches 93°C, and turns ON when the temperature drops to 90°C or lower. Note that the reboiling switch 16 is connected in parallel to the thermal switch 21.

A relay coil 25 forms a series circuit with the boiling sensor 9 and is connected in parallel to the water heater 20, and when energized, switches the contact piece of the relay switch 26 from the NC contact to the NO contact. The contact piece and NO contact of this relay switch 26 are connected in parallel to the thermal switch 21.

The hot water amount setting timer 13 has a timer motor 27, a first switch 28, and a second switch 29. The timer motor 27 and the first switch/second switch 28 form a series circuit, and the second switch 29 and the opening/closing switch 29 are connected to each other. It is connected in parallel to the series circuit consisting of the valve 11, and this parallel circuit is connected via the hot water tap switch 15 between the NLIX: contact of the relay switch 26 and one terminal of the power source. This hot water supply amount setting timer 13 turns the rain switches 28 and 29 set at a desired time (hot water supply amount) into the ON state, maintains the ON state during the timing operation, and turns them both into the OFF state when the set time elapses (off position). and
Further, when the continuous position is set, only the second switch 29 is turned on.

In the above configuration, when boiling water, water is poured into the container 4 and the power is turned on. Then, both heaters 20. ，
Since the thermal switches 21 and 23 are both in the QN state, they are energized and start heating the water, while the relay coil 2
5 is also energized because the boiling sensor 9 is in the ON state, and switches the relay switch 26 to the No contact side.

As the heating temperature progresses and the water temperature rises, the thermal switches 21 and 23 are sequentially turned off at predetermined temperatures, and when the thermal switches 23 are turned off, the heat retention heater 22 is turned off. heating is stopped, and subsequent heating and temperature rise is performed by the water boiling heater 20.

Eventually, boiling begins and the steam generated in the container 4 comes out through the steam passage 8, and the boiling sensor 9 detects that the steam has reached a boiling state due to the steam temperature and turns off, turning off the relay coil. 25 is stopped and the relay switch 26 is switched to the NC contact side.

Thereafter, the water temperature gradually decreases, and when it eventually reaches 90 degrees Celsius or less, the thermal switch 23 is turned on. From then on, turning on and off the switch 23 controls the energization of the heat-retaining heater 22 to a predetermined level. It will keep the temperature warm.

Above, I explained the series of operations from boiling water to keeping it warm.
When starting boiling water, if you want to obtain 1 liter of hot water just after boiling to make regular coffee, turn on the power, turn on the hot water switch 15, and set the hot water supply amount setting timer 13 to the desired hot water supply amount (time). Adjust the adjustment knob 14 to the water level display section 1.
7 and adjust the flow rate control valve 12 to match the predetermined scale. Of course, the coffee liquid receiving container 18 and the coffee basket 19 are kept in a predetermined state.

Then, when the relay switch 26 is switched to the NC contact side α, the hot water supply amount setting timer 13 starts timing operation, and the on-off valve 11 is also energized via the second switch 29 and opened, thereby reducing the amount of water in the container 4. Hot water just after boiling is poured out through channel 1.
0, hot water is discharged, and the hot water is supplied onto the coffee basket 19 to extract coffee liquid. Then, when the set time of the hot water supply amount setting timer 13 has elapsed, the first and second switches 2
Both valves 8 and 29 are turned OFF, and the on-off valve 11 is closed to stop the hot water supply. Therefore, at this time, the coffee liquid receiver is in container 1.
A desired amount of coffee liquid is stored in the chamber 8, and the flow control valve 12 in particular prevents the amount from exceeding or exceeding the desired amount.

Also, if you want to make regular coffee by re-boiling the water that is being kept warm, turn on the re-boil switch 16 and then
If you follow the steps above, after re-boiling,
Similarly to the above, the setting timer 13 and flow control valve 12 are used to create a desired amount of coffee liquid using hot water immediately after boiling.
, just operate the hot water tap switch 15. If you want to draw hot water continuously, turn on the hot water tap switch 15 and set the hot water supply amount setting timer 13 to the continuous position.
1 opens, hot water can be continuously dispensed until the hot water supply switch 15 is turned off or the hot water supply amount setting timer 13 is set to the off position.

Note that when cold water is replenished into the container 4, the thermal switch 21 automatically re-boils the water.

The embodiments of the present invention have been described above, but the present invention is characterized in that the desired amount of hot water can be obtained accurately and automatically by combining a water supply amount setting timer, a flow rate control valve, etc. It is not limited to boiling type electric water heaters such as.

Further, in the above embodiment, the on-off valve is electrically controlled by the hot water supply amount setting timer, but the on-off valve may be operated mechanically in conjunction with, for example, the time setting of the hot water supply amount setting timer and the elapse of the set time. It is possible.

(Effects) As described above, according to the present invention, the desired amount of hot water can be obtained accurately by setting the hot water supply amount setting timer and adjusting the flow rate control valve, and the hot water supply can be automatically stopped. This eliminates the inconvenience of not being able to leave the area while hot water is being supplied, and is extremely useful in practice.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of the electric water heater of the present invention, FIG. 2 is a schematic cross-sectional configuration diagram from the upper side of the same, and FIG. 3 is an electric circuit diagram of the same. 4: container, 7: heating zone, 10: pouring path, 11: on-off valve,
12; Flow rate control valve, 13: Hot water supply amount setting timer, 14:
Adjustable size.

Claims (1)

[Claims] l. A container for storing a liquid, a heater for heating the liquid in the container, a pouring path for pouring out the liquid in the container to the outside by gravity, an on-off valve inserted in the pouring path, and a desired opening/closing valve. a hot water supply amount setting timer that is set at a time and switches the on-off valve from an open state to a closed state as the set time elapses; and a hot water supply amount setting timer that is inserted in the above-mentioned pouring path in series with the on-off valve and adjusts the flow rate according to the water level in the above-mentioned container. An electric water heater equipped with a flow control valve.