JPH02299620A - electric water heater - 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] [Industrial Application Field] The present invention enables users to easily make water without boiling it, mainly in homes and offices, but it can also be kept warm in the boiling state, and it can be used as a built-in device. This relates to an electric water heater that can pour hot water using a pump.

[Conventional technology]

Conventionally, this type of electric water heater has, for example, as shown in FIG. ,
Temperature detection means (3) for detecting the water temperature in the container (1)
and a heating control means (4), the heating control means (4) receiving a detection signal of the amount of water in the container (1) detected by the temperature detection means (3) controls the output of the heating means (2). It is something that will be done. In addition, this water heater also has a container (1).
a discharge means (5) for discharging the water in the container; a water amount detection means (6) for detecting the amount of water in the container (1);
) is provided with a water amount display means (7) for displaying the amount of water inside the container (1) detected by the water amount display means (7).
The amount of water in the container (1) was displayed, which decreased due to discharge and increased due to water supply.

[Problems to be Solved by the Invention] However, in such a conventional configuration, the amount of water in the container (1) is detected by the water amount detection means (6) and simply displayed by the water amount display means (7). Therefore, for example, when it is necessary to pour enough coffee or tea into cups for each person, and hot water must be poured evenly into each cup, the value shown on the water amount display means (7) Based on this, the only option is to check the remaining amount of hot water in the container (1), then divide it by the number of people, and judge whether or not you can make it in time with just the remaining amount.
Alternatively, due to an error in adjusting the amount of hot water poured into each cup, there is a risk that the hot water in the container (1) will run out before all the cups are filled with hot water.

The present invention was made to solve these problems, and when pouring hot water into a container multiple times, it eliminates the need for troublesome calculations and manual pouring operations.
You can automatically pour hot water into the container for the set number of times in multiple batches according to the amount initially poured.Moreover, if the amount of hot water remaining in the container does not reach the amount for the set number of times, a notification will notify you that water needs to be refilled. The object of the present invention is to provide an electric water heater that eliminates the inconvenience of running out of hot water in the container during pouring.

[Means to try to solve the problem]

In order to achieve the above object, the electric water heater of the present invention has the following features:
a water storage container; a heating means for heating and keeping the water contained in the container; a first stage of temperature detection for detecting the temperature of the water in the container; heating control means for controlling output, discharge means for discharging water contained in the container, discharge water amount storage means for storing the amount of ice discharged by the discharge means, and water amount for detecting the amount of water in the container. It comprises a detection means, a number input means for inputting the number of times water is discharged from the container, and a water supply notification means for notifying the necessity of supplying water into the container, and further, the number input means receives an input signal. If the amount of water in the container is greater than or equal to the number of times input from the number of times input means, based on the amount of water detected by the water amount detection means and the amount of water stored in the discharged water amount storage means, The discharge means is controlled to discharge the amount of water stored in the discharge water amount storage means for the number of times, and when the amount of water in the container is less than the amount for the number of times inputted from the same number of times input means, the water supply notification means is activated. The apparatus is characterized by comprising a control means for outputting a signal to notify water supply.

[Function] According to the above configuration, the control means controls the amount of water in the container for the number of times input by the number of times input means based on the amount of water detected by the water amount detection means and the amount of water stored in the discharged water amount storage means. If the amount of water stored in the amount of water stored in the amount of water stored in the amount of water stored in the amount of water stored in the container is not present in the container, the amount of water stored in the number of amounts of water stored in the amount of water stored in the amount of water stored in the amount of water stored in the container is not present in the container. Since the system outputs "" to inform you of the need for water supply, it eliminates errors in judgment and the need to repeatedly adjust the discharge and water amount as many times as necessary.

(Embodiment) Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. Fig. 1 shows the mechanical configuration of an electric water heater according to this embodiment together with the electrical configuration. In this figure, , OI) is a water storage container, 02) is a heating means for heating and keeping warm the water stored in the container (11), and the surface is the container (
Temperature detection means 6-1 detects the water temperature in II), and heating control means receives a signal from temperature detection means 03) to control the output of heating means 02).

05) is a discharge means for discharging water contained in the container (11), and includes a motor (15a) and a pump (+, 5b).
It is composed of. 00 is the discharge water amount storage means which stores the amount of water discharged in "13", which calculates the amount of water discharged from the total time of 11 tll discharged by the discharge means 05).

0'r) is a water amount detection means for detecting the amount of water inside the container (11), and a pipe (17a) made of a dielectric material such as glass is arranged along the rear side of the outer peripheral surface of the container (11). , both ends of this pipe (17a) are connected to the lower end G of the container (1), and the inside of the pipe (17a) is connected to the container (1).
11) While the water level is the same as that inside the pipe (
Electrode plates (17b) are arranged on both sides of the outer peripheral surface of the pipe (17a) so as to sandwich the same pipe (17a), and
An electrode part (1, 7c) is provided at the lower end part of 7a), and further,
A C/F converter (17d) is provided to convert the capacitance C between the electrode plates (1, 7b) and the electrode portion (17c) into a frequency F.

(18) is a number input means for inputting the number of discharges by the discharge means (15), and 09) is a water supply notification means for notifying the necessity of supplying water or hot water into the container (11).

(2rJJ is a control means, and when the number of times input means 08) receives an input signal, the container (11) is When the amount of water in the container (If) exceeds the amount of water inputted from the number of times input means Q8), the discharge means is controlled to discharge the amount of water stored in the amount of water stored in the amount of water stored in the amount of water stored in the container (If) for the number of times. When the amount of water is less than the amount of water for the number of times input from the number of times input means 08), a signal is output to the water supply notification means 09) to notify the water supply.

21 shows a specific circuit of the electrical component of this embodiment. In this figure, (21) is a microcomputer constituting the control means (20),
It is composed of a CPU, RAM, ROM, and input/output capo-I. (22) is the heating means 02)
The heater (15a) is the main part of the discharge means Q5.
), and these heater (22) and motor (15a) are -7=first and second bidirectional 1 Nyristor (24) (2
5), and further connected in series with the alternating current amount '#, (26).

(27) is the first transistor, and the collector or the first resistor (
28) of the first bidirectional zyristor (24)
-, the emitter is connected to the LOW level of the circuit, and the head is connected to the output port of the microcomputer (21).

(29) is the 21st-run lister, and the collector is the 211th
(The emitter is connected to the gate of the second bidirectional zyristor (25) via the resistor (30), the emitter is connected to the LOW level of the circuit, and the ports are connected to the output port of the microcomputer (21).

(31) is the L that constitutes the main part of the water supply notification means 09)
An ED (light emitting diode) is connected to the output capo-1- of the microcomputer (21) via a third resistor (32).

(33) is a buzzer constituting another main part of the water supply notification means Q9), and is connected to one microphone and the output capo of the computer (21) via the fourth resistor (34).

(35) is the first input switch constituting the number input means 08), which is connected to the input port of the microcomputer (21), and when this input switch (35) is pressed, one microphone is input to the computer (21). I G HL
/HEL is inputted via the fifth resistor (36) if it is not pressed.

(38) is a second person input switch, which is connected to the input ports 1 to 1 of the microcomputer (21), and when this input switch (38) is pressed, the microcomputer 5. -ta(2
1), I(r CI-RUHEL) is inputted, and if it is not pressed, a LOW level is inputted via the sixth resistor (39).

(40) is an A/D converter, and a thermistor (41) whose resistance value decreases as the temperature inside the container (11) increases.
It inputs the voltage divided by the seventh resistor (42), and has a plurality of output terminals connected to the capacitor 1 of the microcomputer (21), and the microcomputer (21). 21) outputs an output according to the temperature inside the container (11).

(43) is the electrode tffl (17b) and the electrode part (1,
7c) The above-mentioned capacitance formed between -■0- and the C/F converter (17
d), and its value changes depending on the amount of water in the container (11). The C/F converter (17d) receives a signal from the capacitance (43) and inputs a signal corresponding to the amount of water in the container (11) to the input port of the microcomputer (21). (44) is a DC power supply, which is the power supply for the circuit described above.

FIG. 3 is a flowchart 1 showing an example of a program in the ROM of the microcomputer (21).The operation of the above configuration will be explained according to this flowchart.In step (71), the temperature of the container (11) is Temperature detection means θ3) detects and performs A/D conversion! In step (72), it is determined whether the temperature is high or low based on the temperature detection signal input from (40).

If it is determined that the temperature is low in step (72), step (73) is performed.
, outputs the HI CI-I level to the first transistor (27) to turn on the transistor (27), and then outputs the HI CI-I level to the first transistor (27) to turn on the first bidirectional silicon risk (24) through the first resistor (28).
A current is passed through the gate of the two-way thyristor (24) to turn on the heater (22).

Conversely, if it is determined that the temperature is high in step (72), the process proceeds to step knob (74), outputs a LOW level to the first transistor (27), turns off the transistor (27),
Stop flowing current to the gate of the first bidirectional thyristor (24), eliminate conduction of the same bidirectional thyristor (24),
Turn off the heater (22).

Next, the process proceeds to step (75), where the second input switch (3
8) judges the signal of the connected input port, and if the doujinshi switch (38) is pressed and the input port signal is HI (1; H level), step (76)
Proceed to. Conversely, if the second input switch (38) is not pressed and the signal at the input port is at a LOW level, the process proceeds to step (77) and the next process.

In addition, when proceeding to step (76), a HIGH level is output to the second transistor (29), the same transistor (29) is turned on, and the second bidirectional silicon risk ( 25) By passing a current through the gate of
By making the bidirectional thyristor (25) conductive,
Turn on the motor (15a) to start discharging and proceed to step (78).

-11= In step (78), microcomputer (21)
starts measuring time using a timer and proceeds to step (79).

In step (79), the signal of the input port to which the second input switch (38) is connected is determined, and if the input switch (38) is pressed and the signal of the input port is HI.
In the case of the GH level, the process does not proceed beyond step (79), and only if the second input switch (38) is not pressed and the signal at the input port is at the LOW level, the process proceeds to step (80).

Proceeding to step (80), a LOW level is output to the second transistor (29), and the first transistor (29) is turned off.
FF, stop flowing current to the gate of the second bidirectional thyristor (25), eliminate conduction of the second bidirectional thyristor (25), turn off the motor (15a), end the discharge, and proceed to step (81). ).

In step (81), the microcomputer (21)
- ends the time measurement by the timer and proceeds to step (82).

In step (82), the discharge amount is calculated from the time measured from step (78) to step (81) and stored in the discharge amount storage means 0ω, and the process proceeds to step (83).

In step (83), the output of the C/F converter (17d) is received, the amount of water in the container (II) is detected, and the amount of water in the container (II) is detected.
Proceed to 4).

In step (84), the signal of the input port to which the first input switch (35) is connected is determined, and if the input switch (35) is pressed and the signal of the input port is HI.
If the signal is at the GH level, the process proceeds to step (85). If the first input switch (35) is not pressed and the signal at the input port is at the LOW level, the process proceeds to step (77) to proceed to the next step.

In step (84), the signal of the input port to which the first input switch (35) is connected is determined, and the number of inputs made by the user is determined and stored.

In step (85), the container (
Determine the presence of water in the bone for a memorized number of times within 10,
If it is determined in step (86) that water supply is necessary, the process proceeds to step (87), and if it is unnecessary, the process proceeds to step (88).
).

In step (87), 1. ,, E D (31,)
At the same time, the buzzer (33) is sounded to notify water supply, and the process proceeds to step (77) to proceed to the next process.

If the process proceeds to step (88), the 21st-run lister (
29), outputs I-11CI-Rher, turns on the I-11CI-Lancistor (29), and flows a current to the gate of the second bidirectional Xyrisk (25) through the second resistor (30). The Zyristor (25) is made conductive and the motor (15a)
After turning ON and starting discharge, the process proceeds to step (89).

In step (89), the system waits until the discharge water amount storage means (discharge means 05) discharges the discharge water amount stored in step (82) (discharge water amount storage means 06).
When the amount of water reaches the stored amount, proceed to step (90).

Proceeding to step (90), the second transistor (29)
I, ○W level level 11;
9), stop passing current to the gate of the second bidirectional Zyristor (25), and turn off the current to the gate of the second bidirectional Zyristor (25).
) is no longer conductive, the 'E-ri (15a) is made ○IpF, and after completion of ejection, the process proceeds to step (91).

In step (91), it is determined whether or not the number of times stored in step (85) has been reached. If it has not been reached, the process returns to step (88); if it has been reached, the process proceeds to step (77) and moves on to the next process. .

[Effects of the Invention] As is clear from the description of the following second embodiment, the present invention has the following effects:
For example, when dispensing the same amount of coffee or tea in several batches in order to fill cups for each person, the control means controls the amount of water detected by the water amount detection means and the amount of water stored in the amount of discharged water storage means. Based on this, when there is more water in the container than the number of times input by the number input means, the discharging means is controlled to discharge the amount of water stored in the discharged water amount storage means for the number of times, and the amount of water in the container is When the amount of water is less than the number of times inputted from the number of times input means, a signal is output to the water supply notification means to notify the water supply. This method has excellent advantages such as eliminating the need to repeatedly adjust the amount of water several times.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of an electric water heater according to the present invention. Figure 1 is a partially cutaway sectional view showing the mechanical configuration of this embodiment together with its electrical configuration; A circuit diagram showing a specific example of the electrical components, FIG. 3 is a flowchart 1 showing a program inside the ROM of a microcomputer.
・It is. FIG. 4 is a block diagram showing an example of a conventional electric water heater. (11)...Water storage container, 02)...Heating means, 03
)...Temperature detection means, 04)...Heating control means, 0
5)...Discharge means, (l[i)...Discharged water amount storage means, 07)...Water amount detection means, 08)...Number of times input means, 09)...Water supply notification means, 斡・...control means.

Claims (1)

[Claims] (1) a water storage container; a heating means for heating and keeping the water contained in the container; a temperature detection means for detecting the temperature of the water in the container; a heating control means for controlling the output of the means; a discharge means for discharging water contained in the container; a discharge water amount storage means for storing the amount of water discharged by the discharge means; and a discharge water amount storage means for detecting the amount of water in the container. a water amount detection means; a number input means for inputting the number of times water is discharged from the container; a water supply notification means for notifying the need for water supply into the container; and when the number input means receives an input signal. , based on the water amount detected by the water amount detection means and the water amount stored in the discharged water amount storage means, when the amount of water in the container is greater than or equal to the number of times inputted from the number of times input means, the discharge means is controlled; and discharges the amount of water stored in the discharged water amount storage means for the number of times, and when the amount of water in the container is less than the amount of water for the number of times inputted from the same number of times input means, outputs a signal to the water supply notification means. An electric water heater characterized by comprising a control means for notifying water supply.