JP3778040B2 - Water heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a built-in type hot water supply apparatus that is used by being incorporated into a kitchen system in a general household.
[0002]
[Prior art]
In conventional jar pots, etc., the user confirms the state of the scale made of calcium or magnesium ions adhering to the heating container, and if the scale adheres excessively, citric acid or a commercially available pot cleaning agent is put in the container. The heated container was cleaned.
[0003]
[Problems to be solved by the invention]
However, the above-described conventional method can be performed only with a water heater having a configuration in which dirt in the heating container can be directly checked, and in a hot water supply device having a configuration built in a kitchen system, it is not easy to check in the heating container. Since the state of scale adhesion varies depending on the amount of use, there is a problem that it is difficult to confirm the timing of optimal cleaning according to the state of scale adhesion.
[0004]
The present invention solves the above-described conventional problems, and an object of the present invention is to provide a hot water supply apparatus that can estimate the amount of scale adhering to a heating container and know the optimal cleaning timing of the container.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the purified water heater of the present invention estimates the amount of scale adhering to the heating container and informs the cleaning time of the heating container. Thereby, the user can know the timing of cleaning the heating container without looking inside the heating container.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 includes a heating unit having a heating container for heating water, a water supply valve for controlling water supply provided in a water supply path from a water pipe to the heating container, and hot water in the heating container. A pump for discharging, a heating container cleaning time notifying means for notifying that the cleaning time of the heating container has been reached, and a pump time measuring means for measuring the cumulative time during which the pump is driven, and the heating container cleaning time The notifying means is a hot water supply apparatus that informs that it is a cleaning time when the pump time measuring means measures a predetermined cumulative time.
[0007]
According to this configuration, it is possible to know the cleaning timing of the heating container with higher accuracy without looking at the heating container by estimating and notifying the adhesion of the scaling of the heating container based on the driving time of the pump.
[0008]
The invention according to claim 2 includes a heating unit having a heating container for heating water, a water supply valve for controlling water supply provided in a water supply path from a water pipe to the heating container, and hot water in the heating container. A pump for discharging, a heating container cleaning time notifying means for notifying that the cleaning time of the heating container has been reached, and a water supply time measuring means for measuring the cumulative time that the water supply valve is on and water is supplied to the heating container The heating container cleaning time notifying unit is a hot water supply device that notifies the cleaning time when the water supply time measuring unit measures a predetermined cumulative time.
[0009]
According to this configuration, it is possible to know the cleaning time more accurately without looking at the heating container by estimating and notifying the adhesion of the scaling of the heating container by measuring the water supply time during the water supply.
[0010]
The invention according to claim 3 includes a heating unit having a heating container for heating water, a water supply valve for controlling water supply provided in a water supply path from a water pipe to the heating container, and hot water in the heating container. A pump for discharging, a heating container cleaning time notifying means for notifying that the cleaning time of the heating container has been reached, and a cumulative water supply measuring means for detecting the cumulative water supply amount to the heating container, and the heating container cleaning time The notifying means is a hot water supply apparatus for notifying that it is a cleaning time when the cumulative water supply amount of the cumulative water supply measuring means measures a predetermined amount.
[0011]
According to this configuration, it is possible to know the cleaning time more accurately without looking at the heating container by estimating and notifying the adhesion of the scaling of the heating container by measuring the water supply amount.
[0012]
The invention described in claim 4 is a hot water supply apparatus provided with a cleaning time changing means for changing the cleaning time of the heating container.
[0013]
According to this configuration, the cleaning time is changed depending on the concentration of calcium and magnesium ions contained in tap water, which varies depending on the regional characteristics, and the heating container cleaning time is accurately observed in accordance with the regional characteristics. Can be accurately reported.
[0014]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0015]
Example 1
Embodiment 1 of the present invention will be described below with reference to FIGS. In FIG. 1, 1 is a water pipe, 2 is a branch plug, 3 is a stop cock. Reference numeral 4 denotes a heating unit of a hot water supply apparatus housed in the kitchen unit 5, and there is a heating container 6 for putting water therein.
[0016]
The connection pipe 7 branched from the water pipe 1 by the branch plug 2 is attached to the entrance of the water purification cartridge 9 via the water supply valve 8. A switching valve 10 is connected to the outlet of the water purification cartridge 9. One of the switching valves 10 (when the switching valve is on) is connected to the upper part of the heating container 6. A main heater 11 that heats water, an auxiliary heater 12 that retains the heated water, and a thermistor 13 that detects the hot water temperature of the heating container 6 are attached to the bottom of the heating container 6.
[0017]
A pump 14 for discharging the hot water inside the kitchen unit 5 is attached to the hot water outlet of the heating container 6. Furthermore, an electrode 15 for detecting the water level is attached in the heating container 6. The electrode 15 is attached so that the hot water storage amount of the heating container 6 can be detected at 0.3 liter, 0.6 liter, 0.9 liter, 1.2 liter, 1.5 liter, and 1.8 liter, respectively. It has been. In this embodiment, the full water amount of the heating container 6 is 1.8 liters. Reference numeral 16 denotes a power switch of the hot water supply device, which is attached to the side surface of the heating unit 4.
[0018]
17 is a faucet provided at the upper part of the kitchen unit 5, and a hot water pipe 18 for guiding hot water in the heating container 6 and a water pipe branched by the switching valve 10 (when the switching valve is off). 19 and a steam pipe 20 communicating with the upper portion of the heating container 6 are housed. These pipes 18 to 20 and the water tap 1a are located facing the kitchen sink 5a.
[0019]
Reference numeral 21 denotes a display / operation unit including a heating container cleaning time notification means 21a, which is provided on the outer surface of the upper portion of the faucet 17. Reference numeral 22 denotes a cleaning time changing means attached to the upper part of the heating unit 4. Reference numeral 23 denotes driving time measuring means for measuring the time during which the power switch 16 is on. Reference numeral 24 denotes backup means for storing the measurement time of the drive time measurement means 23 when the power switch 16 is turned off or a power failure is detected.
[0020]
FIG. 2 shows the display operation unit 21 of this embodiment. When the water purification button switch 21a is pressed, the water supply valve 8 is turned on. When the water supply valve 8 is turned on, the water from the water pipe 1 passes through the water purification cartridge 9 and the switching valve 10 is turned off. When the water purification button switch 21a is pushed again, the water supply valve 8 is turned off, and water from the water pipe 19 stops.
[0021]
When the unlock button switch 21b is pressed, the unlock LED 21c is lit. If the hot water release button switch 21d is kept pressed within 10 seconds after the lock release button switch 21b is pressed, the pump 14 is driven only while the hot water release button switch 21d is being pressed, and hot water in the heating container 6 is discharged from the hot water pipe 18. To do. When the hand is released from the hot water button switch 21d that is kept pressed, the lock release LED 21c is turned off, the pump 14 is turned off, and hot water from the hot water vip 18 is stopped. Further, the LED 21e with the hot water amount 1, the LED 21f with the hot water amount 2, and the LED 21g with the hot water amount 3 change according to the amount of hot water stored in the heating container 6 detected by the electrode 15. When the amount of hot water stored in the heating container 6 is less than 0.6 liter, the LED 21e with the amount of hot water 1 lights up. When the amount of stored hot water in the heating container 6 is 0.6 liter or more and less than 1.2 liter, the hot water amount 1 LED 21 e and the hot water amount 2 LED 21 f are lit. When the amount of hot water stored in the heating container 6 is 1.2 liters or more, the LED 21e for hot water amount 1, the LED 21f for hot water amount 2, and the LED 21g for hot water amount 3 are lit.
[0022]
The heating container cleaning time notification LED 21 h is an LED that notifies the cleaning time in the heating container 6. The cleaning switch 21 i is a switch for operating a sequence for cleaning the inside of the heating container 6. By operating the cleaning switch 21i, for example, the water supply valve 8, the pump 14 or the switching valve 10 is controlled, and hot water in the heating container 6 is discharged and water is supplied to the heating container 6 (multiple times). The washing process for washing the is automatically executed.
[0023]
FIG. 3 shows the cleaning time changing means 22, which has a cleaning time changing switch 22 a that can be adjusted in three stages of “early”, “normal”, and “slow”. The cleaning time change switch 22a can change the notification timing of the cleaning time in accordance with the actual usage of the user. That is, by changing the cleaning time according to the concentration of calcium and magnesium ions contained in tap water that varies depending on the regional characteristics, the heating container cleaning timing can be accurately adjusted without looking at the inside of the heating container 6 according to the regional characteristics. You can let them know.
[0024]
The actual operation in the above embodiment will be described with reference to FIGS. When the power switch 16 is turned on, the water supply valve 8 is turned on after the switching valve 10 is turned on. Then, the water is stored in the heating container 6 by the switching valve 10 after passing through the water purification cartridge 9 from the water pipe 1. When the amount of stored water reaches 0.3 liters by the electrode 15, the water supply valve 8 and the switching valve 10 are turned off, and the water storage into the heating container 6 is stopped. Thereafter, the main heater 11 and the auxiliary heater 12 are turned on to heat the water in the heating container 6. When the detected temperature of the thermistor 13 reaches 95 ° C. or higher, the switching valve 10 and the water supply valve 8 are turned on again, and water is stored again in the heating container 6. When the amount of water stored in the electrode 15 reaches the next detected amount, that is, 0.6 liter, the water supply valve 8 and the switching valve 10 are turned off to stop water storage in the heating container 6. Such an operation is repeated, and when the detected water storage amount of the electrode 15 reaches 1.8 liters, the main heater 11 and the auxiliary heater 12 are turned off. When the temperature detected by the thermistor 13 is less than 95 ° C., the auxiliary heater 12 is turned on to keep the hot water in the heating container 6 at a high temperature.
[0025]
Also, since the hot water in the heating container 6 has been ready to be tapped from the time when the first heating is completed, the pump 14 is driven while the unlocking button switch 21b is depressed and then the tapping button switch 21d is depressed. Then, the hot water in the heating container 6 is pumped up to the hot water pipe 18 and discharged.
[0026]
Here, when the cleaning time notification time change switch 22a is set to “normal”, the heating container cleaning time notification LED 21h flashes slowly when the power switch 16 is turned on for more than 2000 hours ( In addition, if the cleaning process is not carried out and the time exceeds 4000 hours, the heating container cleaning time notification LED 21h flashes rapidly (0.4 seconds on 0.4 seconds). Off). Even if the cleaning process is not performed, all operations are stopped until the cleaning process is performed after 6000 hours. Also, when the cleaning time change switch 22a is set to "early", a slow blinking display is performed after 1000 hours, a fast blinking display is performed after 2000 hours, and a cleaning process is performed when 3000 hours are exceeded. All operations are stopped until it is executed. Further, when the cleaning time change switch 22a is set to “slow”, a slow flashing display is performed when 4000 hours are exceeded, a fast flashing display is displayed after 8000 hours, and the cleaning process is performed when 12000 hours are exceeded. All operations are stopped until it is executed.
[0027]
When the cleaning switch 21i is operated to operate the sequence for cleaning the inside of the heating container 6 and the cleaning process is executed, the driving time measuring means 23 is reset and time measurement is started again. When the power switch 16 is turned off or a power failure occurs, the time measured by the drive time measuring means 23 is stored in the backup means 24. When the power switch 16 is turned back on or the power failure is restored, Measurement is performed by adding the measurement time backed up by the backup means 24.
[0028]
Thus, the user can know the cleaning timing in the heating container 6 without looking at the heating container 6 with a simple configuration in which the cleaning time in the heating container 6 is notified by the time when the power switch 16 is on. it can. In addition, the cleaning timing can be changed depending on the concentration of calcium, magnesium ions, and the like in tap water which varies depending on the region, and the cleaning timing can be flexibly dealt with in different regions.
[0029]
In the present embodiment, the display time of the heating container cleaning time notification LED 21h is set to 2000 hours, 4000 hours, and 6000 hours, but is not limited to these times.
[0030]
( Reference Example 1 )
Hereinafter, Reference Example 1 of the present invention will be described with reference to FIG. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Reference numeral 25 denotes a heating time measuring means for measuring the cumulative time during which the main heater 11 or the auxiliary heater 12 is on.
[0031]
Here, if the cumulative time during which the main heater 11 or the auxiliary heater 12 is on exceeds 500 hours, the heating container cleaning time notification LED 21h shown in FIG. In addition, if the cleaning process is not performed and the time exceeds 1000 hours, the heating container cleaning time notification LED 21h is rapidly blinked (0.4 seconds on, 0.4 seconds off). Even if the cleaning process is not performed, all operations are stopped until the cleaning process is performed after 1500 hours.
[0032]
When the cleaning process is executed by operating the cleaning switch 21i, the measurement time of the heating time measuring means 25 is reset, and the time measurement is started again. When the power switch 16 is turned off or a power failure occurs, the time measured by the heating time measuring means 25 is stored in the backup means 24. When the power switch 16 is turned back on or the power failure is restored, The time is accumulated from the measurement time being backed up by the backup means 24.
[0033]
In this way, by measuring the accumulated time that the main heater 11 or the auxiliary heater 12 is on and notifying the cleaning time in the heating container 6, the user can adjust the heating container 6 according to the usage status of the heating container 6. You can know the cleaning timing inside.
[0034]
In this reference example, the display time of the heating container cleaning time notification LED 21h is set to 500 hours, 1000 hours, and 1500 hours, but is not limited to these times.
[0035]
(Example 2 )
The second embodiment of the present invention will be described below with reference to FIG. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Reference numeral 26 denotes pump time measuring means for measuring the cumulative driving time of the pump 14.
[0036]
Here, when the cumulative time during which the pump 14 is driven exceeds 500 hours, the heating container cleaning time notification LED 21h shown in FIG. 2 is slowly flashing (0.8 seconds on, 0.8 seconds off), If the cleaning process is not performed and the time exceeds 1000 hours, the heating container cleaning time notification LED 21h is rapidly blinked (0.4 seconds on and 0.4 seconds off). Even if the cleaning process is not performed, all operations are stopped until the cleaning process is performed after 1500 hours.
[0037]
When the cleaning process is executed by operating the cleaning switch 21i, the measurement time of the pump time measuring means 26 is reset and the time measurement is started again. When the power switch 16 is turned off or a power failure occurs, the time measured by the pump time measuring means 26 is stored in the backup means 24. When the power switch 16 is turned back on or the power failure is restored, The time is accumulated from the measurement time being backed up by the backup means 24.
[0038]
In this way, by measuring the accumulated time during which the pump 14 is driven and notifying the cleaning time in the heating container 6, the user can clean the heating container 6 with high accuracy according to the usage status of the heating container 6. You can know the timing.
[0039]
In the present embodiment, the display time of the heating container cleaning time notification LED 21h is set to 500 hours, 1000 hours, and 1500 hours, but is not limited to these times.
[0040]
(Example 3 )
Embodiment 3 of the present invention will be described below with reference to FIG. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Reference numeral 27 denotes water supply time measuring means for measuring the cumulative time during which the switching valve 10 and the water supply valve 8 are simultaneously driven.
[0041]
Here, when the switching valve 10 and the water supply valve 8 are turned on at the same time, water is being supplied into the heating container 6, and when the total drive time at that time exceeds 50 hours, FIG. The heating container cleaning time notification LED 21h shown is slowly blinking (0.8 seconds on and 0.8 seconds off), and if the cleaning process is not performed, the heating container cleaning time notification LED 21h is fast. Blinks (0.4 seconds on, 0.4 seconds off). Even if the cleaning process is not performed, all operations are stopped until the cleaning process is performed when the interval exceeds 150.
[0042]
When the cleaning process is executed by operating the cleaning switch 21i, the measurement time of the water supply time measuring means 27 is reset, and the time measurement is started again. When the power switch 16 is turned off or a power failure occurs, the time measured by the water supply valve time measuring means 27 is stored in the backup means 24. When the power switch 16 is turned back on or the power failure is restored. The time is accumulated from the measurement time being backed up by the backup means 24.
[0043]
In this way, by notifying the cleaning time in the heating container 6 by the cumulative time during which the switching valve 10 and the water supply valve 8 are simultaneously driven, the user can further increase the accuracy in accordance with the water supply state in the heating container 6. The cleaning timing in the heating container 6 can be known well.
[0044]
In the present embodiment, the display time of the heating container cleaning time notification LED 21h is set to 50 hours, 100 hours, and 150 hours, but is not limited to these times.
[0045]
(Example 4 )
Embodiment 4 of the present invention will be described below with reference to FIG. In the figure, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. 28 is a flow rate sensor for detecting the amount of water passing between the outlet of the water purification cartridge 9 and the switching valve 10. Although the detailed configuration of the water amount detection sensor 28 is omitted, when water passes, the internal blades rotate, a magnet is attached to the rotating shaft, and the number of passages of the magnet is detected by the Hall IC, It is a mechanism that detects the amount of water passing by counting the number of pulses from the Hall IC. Reference numeral 29 denotes a cumulative water supply amount measuring means for measuring the cumulative measured flow rate of the flow rate sensor 28 when the switching valve 10 is driven.
[0046]
Here, when the power switch 16 is turned on, the water supply valve 8 is turned on after the switching valve 10 is turned on. Then, after passing through the water purification cartridge 9 from the water pipe 1, the water is stored in the heating container 6 by the switching valve 10. When the flow rate sensor 28 detects the passing water amount of 0.2 liter, the water supply valve 8 and the switching valve 10 are turned off and the water storage in the heating container 6 is stopped. Thereafter, the main heater 11 and the auxiliary heater 12 are turned on to heat the water in the heating container 6. When the detection temperature of the thermistor 13 reaches 95 ° C. or higher, the switching valve 10 and the water supply valve 8 are turned on again, and water is stored until the flow rate sensor 28 detects the passing water amount of 0.2 liter. When detected, the water supply valve 8 and the switching valve 10 are turned off to stop water storage in the heating container 6. Such operation is repeated, and when the detected water storage amount of the electrode 15 reaches 1.8 liters, the main heater 11 and the auxiliary heater 12 are turned off. When the temperature detected by the thermistor 13 is less than 95 ° C., the auxiliary heater 12 is turned on to keep the hot water in the heating container 6 at a high temperature. Moreover, since the hot water in the heating container 6 has been ready for hot water from the point of time when the first heating is completed, while pressing the unlocking button switch 21b shown in FIG. The pump 14 is driven so that hot water in the heating container 6 is pumped to the hot water pipe 18 and discharged.
[0047]
Here, when the switching valve 10 is on, water is being supplied into the heating container 6, and when the cumulative flow rate at that time exceeds 1000 liters, the heating container cleaning time notification LED 21h blinks slowly. When the display is over 2000 liters without performing the cleaning process, the heating vessel cleaning time notification LED 21h flashes rapidly (0.4 seconds on, 0. 0 seconds off). 4 seconds off). Even if the cleaning process is not performed, all operations are stopped until the cleaning process is performed after 3000 liters.
[0048]
When the cleaning process is executed by the operation of the cleaning switch 21i, the measurement amount of the cumulative water supply amount measuring unit 29 is reset and measurement is started again. When the power switch 16 is turned off or a power failure occurs, the measured amount of the cumulative water supply measuring means 29 is stored in the backup means 24. When the power switch 16 is turned back on or the power failure is restored, Measurement is performed by accumulating from the measurement amount backed up by the backup means 24.
[0049]
In this way, by notifying the cleaning time in the heating container 6 by the accumulated water supply amount in the heating container 6, the user can clean the heating container 6 with higher accuracy in accordance with the water supply state in the heating container 6. You can know the timing.
[0050]
In this embodiment, the display time of the heating container cleaning time notification LED 21h is set to 1000 liters, 2000 liters, and 3000 liters, but is not limited to these times.
[0051]
【The invention's effect】
As described above, according to the present invention, since it is possible to know the cleaning time of the heating container without looking at the heating container, it is possible to prevent the user from continuing to use the hot water in the heating container to which a large amount of scale adheres. It is possible to provide an easy-to-use hot water supply apparatus that is safe in terms of hygiene and prevents unnecessary cleaning of the heating container.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a hot water supply apparatus according to Embodiment 1 of the present invention. FIG. 2 is a plan view of a display operation unit of a hot water supply apparatus according to Embodiments 1 to 5 of the present invention. FIG. 4 is a sectional view of a hot water supply apparatus in Reference Example 1 of the present invention. FIG. 5 is a sectional view of a hot water supply apparatus in Embodiment 2 of the present invention. sectional view of a water heater according to a fourth embodiment of a cross-sectional view of the water heater [7] the present invention in 3 [description of symbols]
DESCRIPTION OF SYMBOLS 1 Water pipe 4 Heating unit 6 Heating container 8 Water supply valve 10 Switching valve 14 Pump 16 Power switch 21 Display operation part 22 Cleaning time change means 23 Drive time measuring means 24 Backup means 25 Heating time measuring means 26 Pump time measuring means 27 Water supply time Measuring means 28 Flow rate sensor 29 Cumulative water supply measuring means

Claims (4)

A heating unit having a heating container for heating water; a water supply valve for controlling water supply provided in a water supply path from a water pipe to the heating container; a pump for discharging hot water in the heating container; A heating container cleaning time notifying means for notifying that the cleaning time has been reached and a pump time measuring means for measuring a cumulative time during which the pump is driven are provided, and the heating container cleaning time notifying means is the pump time measuring means. There water heater was so that tell that it is time cleaning and for measuring a predetermined cumulative time.   A heating unit having a heating container for heating water; a water supply valve for controlling water supply provided in a water supply path from a water pipe to the heating container; a pump for discharging hot water in the heating container; A heating container cleaning time notifying means for notifying that the cleaning time has been reached, and a water supply time measuring means for measuring the cumulative time that the water supply valve is on and supplying water to the heating container are provided, and the heating container cleaning time is provided. The notifying means is a hot water supply apparatus for notifying that it is a cleaning time when the water supply time measuring means measures a predetermined cumulative time.   A heating unit having a heating container for heating water; a water supply valve for controlling water supply provided in a water supply path from a water pipe to the heating container; a pump for discharging hot water in the heating container; A heating container cleaning time notification means for notifying that the cleaning time has been reached and a cumulative water supply measuring means for detecting the cumulative water supply amount to the heating container are provided, and the heating container cleaning time notification means is configured to measure the cumulative water supply amount. A hot water supply apparatus that informs that it is a cleaning time when the cumulative water supply amount of the means measures a predetermined amount. The hot-water supply apparatus of any one of Claims 1-3 which provided the washing | cleaning time change means which changes the washing | cleaning time of a heating container.

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