JP3757837B2 - 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 a conventional water heater such as a jar pot, when rinsing the inside of the heating container, the user pours water into the heating container and rinses the liquid in the container.
[0003]
[Problems to be solved by the invention]
However, the conventional method has a problem that the user pours water into the heating container, rinses and repeats the action of draining, which takes time and burdens the user. It was.
[0004]
The present invention solves the above-described conventional problems, and provides a hygienic and easy-to-use built-in type hot water supply device that can easily perform rinsing cleaning in a heating container by automating the rinsing cleaning process. Objective.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the hot water supply apparatus of the present invention is provided with rinsing cleaning means for automatically performing a rinsing cleaning process from pouring water into the heating container to draining.
[0006]
By this rinsing cleaning means, the rinsing cleaning process can be performed automatically, the operation of water injection and drainage is omitted, and the rinsing cleaning can be performed easily.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1, a heating vessel for heating liquid, a water supply valve for controlling water supply from the water pipe to the heating container is provided to the water supply path to the heating vessel, the liquid in the heating vessel a pump for discharging the tapping pipe, the controls the water supply valve and the pump, a plurality of times repeated rinse step water heater comprising a rinsing means for performing automatically the waste water from the water injection into the heating vessel By doing so, the water injection and drainage operations when the user performs the rinsing cleaning can be omitted by automation, the rinsing cleaning can be easily performed, and the heating container can be kept clean.
[0008]
The invention described in claim 2 is a hot water supply device capable of automatically performing all the rinsing cleaning processes including the case where the high temperature liquid in the heating container is discharged. This makes it possible to perform rinsing and cleaning more easily when the kitchen system is unattended for a while and there is no danger even if the hot liquid in the heating container is automatically discharged.
[0009]
According to a third aspect of the present invention, since the rinsing / cleaning means according to the first or second aspect includes a start-time rinsing unit that operates when the power is turned on, stale water remains in the heating container when the power is turned on. In this case, since the rinsing is automatically started, the old water in the heating container is not used by mistake, and the heating container can be rinsed, thereby providing a more hygienic and user-friendly water heater. it can.
[0010]
According to a fourth aspect of the present invention, when the power supply is turned on, if the water temperature in the heating container is higher than a predetermined temperature, the rinsing stop means for stopping the rinsing means at the start of the third aspect is provided. If the water temperature is high at the time of charging and there is no sanitary concern, rinsing washing is not performed, so that a sanitary hot water supply apparatus can be provided without consuming extra power.
[0011]
The invention according to claim 5 is provided with a non-water supply rinsing means for operating the rinse cleaning means according to claims 1 to 4 for a long time when the state where no water is supplied for a predetermined time continues in the heating container. When the water in the heating container is not renewed and becomes old, rinsing starts automatically, so the water in the heating container that has become old can be used without being consumed, and the heating container can be easily kept clean. .
[0012]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0013]
Example 1
FIG. 1 shows a hot water supply apparatus according to a first embodiment of the present invention. In the figure, 1 shows the kitchen unit installed in the home, and the purified water heating unit 2 is installed in the interior space. Reference numeral 3 denotes a water pipe, which is connected to a water outlet 4 facing the kitchen sink 12 of the kitchen unit 1 and a water purifying means 5 made of a hollow membrane or activated carbon for removing impurities in tap water. A water supply valve 6 that controls water supply to the water purification means 5 is provided in the water supply path between the water pipe 3 and the water purification means 5. The tap water that has passed through the water purification means 5 is poured into a heating container 8 having a heater 7 for heating the water via a water supply path 9. The heating container 8 includes a thermistor 10 that is a temperature detection means for detecting the water temperature in the heating container, and a water level detection means 11 that detects the water level in the heating container 8 because the potential between the electrodes changes depending on the presence or absence of water. Is provided.
[0014]
On the water supply path 9, there is provided a switching valve 14 that switches and guides the water that has passed through the water purification means 5 to either the water purification pipe 13 that discharges the water to the kitchen sink 12 or the water supply path 9. Reference numeral 15 denotes a steam pipe for releasing the steam generated from the heating container 8, and 16 denotes a pump for discharging the hot water in the heating container 8 to the outlet pipe 17. The water purification pipe 13, the steam pipe 15, and the hot water pipe 17 described above are arranged facing the kitchen sink 12 as in the case of the water tap 4. Reference numeral 18 denotes an operation display unit that informs discharge of hot water and purified water and various states, and is provided in the operation unit 1 a at the top of the kitchen unit 1. 19 is a rinse cleaning means, which is connected to the water supply valve 6, the water level detection means 11, the switching valve 14, and the pump 16, and according to the water level signal from the water level detection means 11, The switching valve 14 and the pump 16 are controlled to automatically perform a rinsing process from pouring water into the heating vessel 8 to draining.
[0015]
FIG. 2 shows the details of the operation display unit 18. When the switch 18 a is turned on, the switching valve 14 is switched to the purified water pipe 13 side, and the purified water SW that opens the water supply valve 6 and discharges purified water from the purified water pipe 13. , 18b is a purified water LED composed of an LED that lights up to indicate that the purified water is being discharged. When 18c is turned on, the switching valve 14 is switched to the heating container 8 and the hot water pipe 17 side and the pump 16 is driven. When the hot water in the heating vessel 8 is discharged from the hot water pipe 17 and the hot water SW 18d is turned ON, the unlocking SW 18e that enables the hot water SW 18c to operate is turned on and the unlocking SW 18d is turned on and the unlocking SW 18d is turned on. A lock release LED 18f indicating the state is a rinse cleaning SW for starting the rinse cleaning of the heating container 8, and controls the rinse cleaning means 19. Than it is.
[0016]
The operation of the hot water supply apparatus configured as described above will be described. The water temperature in the heating container 8 of the hot water supply device is detected by the thermistor 10, and when the water temperature is 85 degrees or less, the heater 7 is turned on to maintain a high temperature state. Further, when the water level is lowered by turning on the hot water SW 18c and discharging the hot water, it is detected that the water level detecting means 11 has been lowered, the switching valve 14 is switched to the heating container 8 side, and the water supply valve 6 is opened for heating. Water is supplied into the container 8. And if the water level detection means 11 detects the water level full state, the water supply valve 6 will be closed and water supply will be stopped. As described above, the hot water in the heating container 8 is always in a full state, and is always kept in a state where the hot water can be discharged.
[0017]
Next, the movement of the rinse cleaning means 19 will be described with reference to FIG. When the rinse cleaning SW 18f is turned on, the rinse cleaning process is started, and the process waits until the tapping SW 18c is turned on in Step 1. In the ON state, the process proceeds to step 2 where the pump 16 is driven and the hot water in the heating container 8 is discharged from the tapping pipe 17. In step 3, it is determined by the water level detection means 11 whether the water level in the heating container 8 has become zero. If hot water still remains in the heating container 8, the answer is NO, and the process returns to step 1 to continue the hot water operation with the hot water SW 18c. On the contrary, when the water level becomes 0, the inside of the heating container 8 is emptied, so that the determination becomes YES and the process proceeds to step 4. In step 4, the rinsing cleaning means 19 switches the switching valve 14 to the heating container 8 side, opens the water supply valve 6 and starts water supply to the heating container 8, and continues the water supply process until the water level detection means 11 detects full water. continue. When full water is detected, the flow proceeds to step 5 to close the water supply valve 6 and the pump 16 is driven to discharge the water in the heating container 8 which has become full from the hot water pipe 17, so that the water level detection means 11 has the water level 0. And the drainage process is continued until the water in the heating container 8 runs out. When there is no water in the heating container 8, the process proceeds to step 6. In step 6, it is determined whether steps 4 and 5 are repeated three times. If it is less than 3 times, NO is returned and the process returns to the water supply process in step 4 again. On the other hand, if the process is repeated three times, the water supply and drainage are automatically performed in the heating container 8 to complete the rinsing and cleaning.
[0018]
As described above, according to the present embodiment, the rinse cleaning means 19 is provided, so that hot water in the heating container 8 that requires attention is discharged into the heating container 8 except when the hot water is discharged (during normal hot water supply). Since the water supply and the discharge of the supplied water can be automatically repeated a plurality of times, rinsing can be easily performed.
[0019]
In the present embodiment, the number of continuous repetitions of water supply and drainage is three, but there is no problem even if the effect and process time are adjusted by increasing or decreasing the number. Further, in this embodiment, the water supplied into the heating container 8 is drained immediately, but there is no problem even if draining after a while. Moreover, although the supplied water was only drained in the present embodiment, there is no problem even if the supplied water is heated and drained to increase the effect of rinsing.
[0020]
(Example 2)
Hereinafter, a second embodiment of the present invention will be described with reference to FIG. The overall configuration of the present embodiment is the same as that of the first embodiment, and the same reference numerals are given and the description thereof is omitted.
[0021]
When the rinse cleaning SW 18f is turned on, the rinse cleaning means 19 of the present embodiment starts the rinse cleaning process, and the pump 16 is driven in step 7 so that hot water in the heating container 8 that is full of water is discharged. The hot water is discharged from the hot water pipe 17, and the hot water is completely discharged until the water level detecting means 11 detects the water level 0 and there is no hot water in the heating container 8. When hot water in the heating container 8 runs out, the process proceeds to step 4. In step 4, the rinse cleaning 19 switches the switching valve 14 to the heating container 8 side, opens the water supply valve 6 to start water supply to the heating container 8, and continues the water supply process until the water level detection means 11 detects full water. To do. When full water is detected, the flow proceeds to step 5 to close the water supply valve 6 and the pump 16 is driven to discharge the water in the heating container 8 which has become full from the hot water pipe 17, so that the water level detection means 11 has the water level 0. And the drainage process is continued until the water in the heating container 8 runs out. When there is no water in the heating container 8, the process proceeds to step 6. In step 6, it is determined whether steps 4 and 5 are repeated three times. If it is less than 3 times, NO is returned and the process returns to the water supply process in step 4 again. On the other hand, if the process is repeated three times, the water supply and drainage are automatically performed in the heating container 8 and the rinse can be performed.
[0022]
As described above, according to the present embodiment, by providing the rinse cleaning means 19, the hot water in the heating container 8 is discharged and discarded, so that water supply into the heating container 8 and discharge of the supplied water are performed. Can be repeated a plurality of times in a fully automatic manner, so that rinsing and washing can be performed more easily.
[0023]
In the present embodiment, the number of continuous repetitions of water supply and drainage is three, but there is no problem even if the effect and process time are adjusted by increasing or decreasing the number. Further, in this embodiment, the water supplied into the heating container 8 is drained immediately, but there is no problem even if draining after a while. Moreover, although the supplied water was only drained in the present embodiment, there is no problem even if the supplied water is heated and drained to increase the effect of rinsing.
[0024]
Example 3
Hereinafter, a third embodiment of the present invention will be described with reference to FIG. The overall configuration of the present embodiment is the same as that of the first embodiment, and the same reference numerals are given and the description thereof is omitted.
[0025]
The power plug 20 supplies power to the hot water supply device. When commercial power is supplied, the power plug 20 sends a signal to the start-up rinsing means 21 that power is supplied. When the starting rinse means 21 receives the power supply start signal, it outputs a rinse start signal to the rinse cleaning means 19. The operation of the rinsing / cleaning means 19 is the same as in the first and second embodiments, and a description thereof is omitted.
[0026]
As described above, according to the present embodiment, since the rinsing means 21 at the start is provided, the rinsing cleaning automatically starts when the power is turned on. Therefore, even if stale water remains in the heating container 8, it is wrong. It is possible to rinse the inside of the heating container 8 without using it, and to provide a hot water supply device that is more hygienic and easy to use.
[0027]
(Example 4)
The fourth embodiment of the present invention will be described below with reference to FIG. The overall configuration of the present embodiment is the same as that of the first embodiment, and the same reference numerals are given and the description thereof is omitted.
[0028]
The rinsing stop means 22 is connected to the thermistor 10 to determine the water temperature in the heating container 8 when the power plug 20 is connected to a commercial power source. If the water temperature is 80 ° C. or higher, a stop signal is output to the starting rinse means 21. When the start time rinsing means 21 receives the stop signal from the rinsing stop means 22, it does not output a rinsing start signal to the rinsing cleaning means 19 even when the power is turned on.
[0029]
As described above, according to the present embodiment, the rinsing stop means 22 is provided so that the water temperature is high when the power is turned on. Since the rinse cleaning means 19 is not operated, a sanitary hot water supply apparatus can be provided without consuming excess power.
[0030]
(Example 5)
Hereinafter, a fifth embodiment of the present invention will be described with reference to FIG. The overall configuration of the present embodiment is the same as that of the first embodiment, and the same reference numerals are given and the description thereof is omitted.
[0031]
The non-water supply rinsing means 23 is connected to the water supply valve 6 and the switching valve 14. Finally, the switching valve 14 is on the heating container 8 side and the water supply valve 6 is opened, that is, the elapsed time from the water supply state to the heating container 8. Count. When, for example, 48 hours elapses, the non-water supply rinse means 23 determines that the water in the heating container 8 has not been updated for 48 hours, and outputs a rinse start signal to the rinse cleaning means 19. The operation of the rinsing / cleaning means 19 is the same as in the first and second embodiments, and a description thereof is omitted.
[0032]
As described above, according to the present embodiment, by providing the non-feed water rinsing means 23, the water in the heating container 8 is not renewed for a long time, and the rinsing washing means 19 automatically starts rinsing washing when it becomes old. The heating container can be easily kept clean without using the water in the heating container 8 that has become old.
[0033]
【The invention's effect】
According to the present invention as described above, by providing the rinsing means is repeated a plurality of times are performed by the automatic up waste water from the water injection into the heating vessel, for performing the cleaning user rinsing, the work automation of water injection and drainage Therefore, it is possible to provide an easy-to-use hot water supply device that can easily perform rinsing and can keep the heating container clean.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an entire hot water supply apparatus according to a first embodiment of the present invention. FIG. 2 is a plan view of an operation display section in the hot water supply apparatus. FIG. 4 is an operation diagram of the rinsing means in the second embodiment of the present invention. FIG. 5 is a cross-sectional view showing the entire hot water supply apparatus in the third embodiment of the present invention. FIG. 7 is a cross-sectional view showing the entire hot water supply apparatus in the example. FIG. 7 is a cross-sectional view showing the entire hot water supply apparatus in the fifth embodiment of the present invention.
DESCRIPTION OF SYMBOLS 1 Kitchen unit 2 Water purification heating unit 3 Water pipe 4 Water tap 5 Water purification means 6 Water supply valve 7 Heater 8 Heating container 16 Pump 17 Hot water pipe 19 Rinsing washing means 21 Rinse washing means 21 Rinsing stop means 23 Rinsing stop means 23 Non-water supply rinsing means

Claims (5)

A heating vessel for heating liquid, a water supply valve for controlling water supply from the water pipe to the heating container is provided to the water supply path to the heating container, and a pump for discharging the liquid in the heating vessel tapping pipe, the A hot water supply apparatus comprising: a rinsing cleaning means that automatically controls a water supply valve and the pump to perform a rinsing cleaning process that repeatedly drains water from the water injection into the heating container a plurality of times .   The hot water supply apparatus according to claim 1, wherein the rinsing cleaning means automatically performs all the rinsing cleaning steps including the case of discharging the high-temperature liquid in the heating container.   The hot water supply apparatus according to claim 1 or 2, further comprising a start-time rinsing means for operating the rinsing cleaning means when the power is turned on.   The hot water supply apparatus according to claim 3, further comprising a rinsing stop means for stopping the rinsing means at the start when the water temperature in the heating container is higher than a predetermined temperature when the power is turned on.   The hot water supply apparatus according to any one of claims 1 to 4, further comprising a non-water-supply rinsing means that operates the rinsing cleaning means when a state where water is not supplied for a predetermined time continues in the heating container.

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