JP2001258734A - Electric water heater with water purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem with an electric water heater with a water purifier that when a drain cock is closed, the water is drained from the drain cock, causing boiling without water. SOLUTION: The electric water heater with a water purifier is provided with the water purifier 1, a water supply valve 14 provided on the entrance of the water purifier, a hot water storage 2 with an electric heating means, a diverter valve 3 to switch the flow of the clean water from the water purifier over to a discharge side outside the appliance or over to the hot water storage for supplying hot water, an electrically operated pump 5 to discharge the hot water in the hot water storage to the outside the appliance, a drain cock 15 to drain the water inside the hot water storage, a drain condition detection means 16 to detect the opening and closing condition of the drain cock and a control means 6 to control the main body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric water heater with a water purifier for supplying drinking water or hot water at home or in an office.

[0002]

2. Description of the Related Art A conventional electric water heater with a water purifier will be described with reference to FIG. An electric water heater with a water purifier includes a water purifier 1 having at least activated carbon;
A heater 4 for heating the water in the hot water storage container 2, an electric pump 5 for discharging the hot water in the hot water storage container 2 to the outside of the body, and a connection between the bottom and the hot water storage container 2 for knowing the remaining amount of the hot water. It is composed of a pain tube 7 and a float 8. Then, when a hot water switch (not shown) is pressed, the electric pump 5 is driven to discharge hot water. Since the remaining amount of hot water in the hot water storage container 2 can be known from the position of the float 8 in the communication pipe 7, the water tap 10 is opened and water is supplied when the amount becomes low. When discarding the hot water in the hot water storage container 2, a drain cock (not shown) is opened to discharge the hot water.

[0003]

However, in the conventional electric water heater with a water purifier, when the user forgets to close the drain cock and supplies purified water to the hot water storage container 2 to heat the heater 4, water is discharged from the drain cock. Therefore, there is a problem that an empty firing state occurs.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to prevent the state of empty heating by detecting the amount of remaining hot water in a hot water storage container. Is to solve the problem.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a water purifier, a water supply valve provided at an inlet of the water purifier, a hot water storage container having electric heating means, and a flow of purified water from the water purifier. A switching valve for switching the water supply side to the external discharge side and the hot water storage container, an electric pump for discharging the hot water in the hot water storage outside the container, and a drain cock for discharging the water in the hot water storage container, An electric water heater with a water purifier is realized by a drainage state detecting means for detecting the open / close state of the discharge cock and a control means comprising a microcomputer for controlling the main body.

According to a second aspect of the present invention, there is provided a water purifier, a water supply valve provided at an inlet of the water purifier, a hot water storage container having electric heating means, and a flow of purified water from the water purifier to the outside of the body. A switching valve for switching the water supply side to the water supply side and the hot water storage container;
An electric pump for discharging the hot water in the hot water container to the outside of the body, a full water detecting means for detecting that the water in the hot water container is full, and a control means comprising a microcomputer for controlling the main body This realized an electric water heater with a water purifier.

According to a third aspect of the present invention, there is provided a water purifier characterized by estimating a remaining amount of hot water in a hot water storage container by a hot water supply amount detecting means for detecting an amount of hot water discharged from the hot water storage container. An electric kettle was realized.

According to a fourth aspect of the present invention, there is provided a water purifier, a water supply valve provided at an inlet of the water purifier, a hot water storage container having an electric heating means, and a flow of purified water from the water purifier to the outside of the body. A switching valve for switching the water supply side to the water supply side and the hot water storage container;
An electric water pump with a water purifier with an electric pump for discharging hot water in the hot water container outside the body, a drain valve for discharging water in the hot water container, and control means including a microcomputer for controlling the main body. Is realized.

According to a fifth aspect of the present invention, there is provided a water supply flow rate detecting means for detecting an amount of purified water supplied to the hot water storage container, and a hot water supply amount detection for detecting the amount of hot water discharged from the hot water storage container. An electric water heater with a water purifier is characterized by estimating the remaining amount of hot water in a hot water storage container by providing means.

[0010] The invention described in claim 6 realizes an electric water heater with a water purifier, characterized in that a fixed amount of purified water is first supplied into a hot water storage container to prevent empty heating.

The invention described in claim 7 is characterized in that the remaining amount of hot water in the hot water storage container is estimated by repeatedly supplying and purifying a fixed amount of purified water until the hot water in the hot water storage container becomes full. This realizes an electric water heater with a water purifier.

The invention described in claim 8 realizes an electric water heater with a water purifier by a remaining hot water amount correcting means for correcting the remaining hot water amount in the hot water storage container when the estimated remaining hot water amount in the hot water storage container becomes full.

The invention according to claim 9 is characterized in that the estimated remaining amount of hot water in the hot water storage container is detected by a temperature detecting means to detect a drought condition and the remaining amount of hot water is corrected. It is a water heater.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a block diagram showing a configuration of a first embodiment of the present invention. Reference numeral 14 denotes a water supply valve for supplying or stopping water from the water tap 10. Reference numeral 1 denotes a water purifier made of activated carbon or a hollow fiber filter.
4 and the other is connected to a switching valve. A water supply valve provided at an inlet of the water purifier 1 is connected to a water tap 10. Reference numeral 2 denotes a hot water storage container for heating water in the hot water storage container by the heater 3. Reference numeral 3 denotes a switching valve for switching the flow of purified water from the water purifier 1 to the purified water discharge port 11 side and the hot water storage container 2 side. Reference numeral 5 denotes an electric pump for discharging hot water in the hot water storage container 2 to the tap hole 12. Reference numeral 15 denotes a drain cock for discharging water from the hot water storage container 2. Reference numeral 16 denotes discharge state detecting means such as a relay and a reed switch for detecting the open / close state of the discharge cock. Reference numeral 6 denotes a control unit including a microcomputer for controlling the main body.

The operation of this embodiment will be described below. First, when the user wants to use purified water, he presses a water purification switch (not shown) to switch the switching valve 3 to the water purifier 1.
Is switched so that the purified water obtained from the above flows to the purified water discharge port 11 side. Then, by opening the water supply valve 14, the raw water from the water tap 10 is purified through the water purifier 1 in this water channel and discharged from the purified water discharge port 11.

Next, if you want to use purified hot water,
To supply water to the hot water storage container 2, the switching valve 3 is switched so that the purified water obtained from the water purifier 1 flows toward the hot water storage container 2, and the water supply valve is opened. The purified water stored in the hot water storage container 2 is heated by the heater 4. Then, when a hot water switch (not shown) is pressed, the electric pump 5 is driven only while the hot water switch is being pressed, and the hot water in the hot water storage container 2 is discharged from the hot water outlet 12.

Next, when the discharge cock is opened to discharge the water in the hot water storage container 2 and purified water is supplied again into the hot water storage container 2, the control means 6 detects the open / close state of the drain cock by the discharge state detection means. Water supply is prohibited until the drain cock is closed. At this time, if the heater 4 is always turned off when the drain cock is open, the hot water storage container 2 will not be fired.

(Embodiment 2) FIG. 2 is a block diagram showing the configuration of Embodiment 2 of the present invention. In the components of the electric water heater with a water purifier, the same numbers as in FIG. 1 are the same as those in the first embodiment. Reference numeral 20 denotes a full-water detecting means for detecting that the water in the hot water storage container 2 is full.

The operation of the embodiment will be described below. The operation for preventing empty heating will be described. When water is supplied into the hot water storage container 2 for the first time, water is supplied until the full water detecting means 20 detects the water. The control means 6 turns on the heater 4 and starts heating when the full water detection means 20 detects the full water.
At this time, when the water is not full, the water tap 10 is closed, water leakage in the hot water storage container 2 and the like are considered. Therefore, if the heater is always turned off, the hot water storage container 2 will not be empty.

(Embodiment 3) FIG. 3 is a block diagram showing the configuration of Embodiment 3 of the present invention. In the components of the electric water heater with a water purifier, the same numbers as in FIG. 1 are the same as those in the first embodiment. Reference numeral 30 denotes a tapping amount detecting means for detecting the amount of tapping water from the hot water storage container.

The operation of the embodiment will be described below. The operation for preventing empty heating will be described. When water is supplied into the hot water storage container 2 for the first time, water is supplied until the full water detecting means 20 detects the water. The control means 6 turns on the heater 4 and starts heating when the full water detection means 20 detects the full water.
If the hot water switch is still pressed, hot water is discharged and the amount of hot water in the hot water storage container 2 decreases. The control means 6 detects the amount of hot water from the hot water amount detection means 30 and can therefore estimate the remaining hot water amount by subtracting this hot water amount from the full water amount. By turning off the heater 4 before the estimated remaining amount of hot water is exhausted, the hot water storage container 2 is not emptied.

(Embodiment 4) FIG. 4 is a block diagram showing the configuration of Embodiment 4 of the present invention. In the components of the electric water heater with a water purifier, the same numbers as in FIG. 1 are the same as those in the first embodiment. Reference numeral 40 denotes a drain valve for discharging water from the hot water container 2, which can be opened and closed by the control means 6.

The operation of the embodiment will be described below. The operation for preventing empty heating will be described. When the power is turned on, since the amount of remaining hot water in the hot water storage container 2 is not known, the control means 6 opens the drain valve 40 to discharge the water in the hot water storage container 2. Next, the switching valve 3 is switched so that purified water obtained from the water purifier 1 flows toward the hot water storage container 2 side, and the water supply valve 14 is opened to supply purified water into the hot water storage container 2. When the purified water enters the hot water storage container 2, the control means 6 turns on the heater 4 to heat it. At this time, if the heater 4 is turned off unless clean water enters, the hot water storage container 2 will not be fired.

(Embodiment 5) FIG. 5 is a block diagram showing the configuration of Embodiment 5 of the present invention. In the components of the electric water heater with a water purifier, the same numbers as in FIG. 1 are the same as those in the first embodiment. Reference numeral 50 denotes a water supply flow rate detecting means for detecting the amount of purified water supplied to the hot water storage container 2. Reference numeral 51 denotes a tapping amount detecting means for detecting the amount of tapping water from the hot water storage container 2.

The operation of this embodiment will be described below. The operation for preventing empty heating will be described. When the power is turned on, since the amount of remaining hot water in the hot water storage container 2 is not known, the control means 6 opens the drain valve 40 to discharge the water in the hot water storage container 2. Next, the switching valve 3 is switched so that purified water obtained from the water purifier 1 flows toward the hot water storage container 2 side, and the water supply valve 14 is opened to supply purified water into the hot water storage container 2. When the purified water enters the hot water storage container 2, the control means 6 turns on the heater 4 to heat it. At this time, the heater 4 is turned off unless purified water enters, so that the hot water storage container 2 does not boil empty.

Next, if the hot water switch is pressed, the hot water is discharged and the amount of hot water in the hot water storage container 2 decreases. The control means 6 detects the amount of hot water from the hot water amount detection means 30, so that the remaining amount of hot water obtained by subtracting the hot water amount from the water amount obtained from the water supply amount detection means can be estimated. By turning off the heater 4 before the estimated remaining amount of hot water is exhausted, the hot water storage container 2 is not emptied.

(Embodiment 6) FIG. 6 is a block diagram showing the configuration of Embodiment 6 of the present invention. In the components of the electric water heater with a water purifier, the same numbers as in FIG. 1 are the same as those in the first embodiment. Reference numeral 60 denotes a constant flow rate detecting means for detecting the amount of purified water supplied into the hot water storage container 2.

The operation of this embodiment will be described below with reference to FIG. The operation for preventing empty heating will be described. In step 1, it is determined whether the remaining amount of hot water in hot water storage container 2 is full. If the water is full, the heater 4 is turned on as it is in step 3 to start heating. Step 2 if not full
At a constant amount (for example, 100 c
The purified water of c) is supplied into the hot water storage container 2. Then step 3
To turn on the heater to start heating. At this time, the heater 4 does not turn on unless clean water enters, so the hot water storage container 2
There is no empty burning.

(Embodiment 7) FIG. 8 is a block diagram showing the configuration of Embodiment 7 of the present invention. In the components of the electric water heater with a water purifier, the same numbers as in FIG. 1 are the same as those in the first embodiment. Reference numeral 70 denotes a tapping amount detecting means for detecting the amount of tapping water from the hot water storage container 2.

The operation of this embodiment will be described below. The operation for preventing empty heating will be described. A fixed amount (for example, 100 cc) of purified water is supplied into the hot water storage container 2 by the constant flow rate detecting means 60 until the hot water in the hot water storage container 2 becomes full. Next, the heater 4 is turned on to start water heating.
When the hot water is boiled, the heater 4 is turned off and a certain amount of purified water is supplied again. The operation of turning on the heater 4 and boiling the water and turning off the heater 4 is repeated until the water is full.

Next, when the hot water switch is pressed even after the water is full, hot water is discharged and the amount of hot water in the hot water storage container 2 decreases. Since the control means 6 detects the hot water amount from the hot water amount detecting means 80, the remaining hot water amount can be estimated by subtracting the hot water amount from the full water amount. Before the estimated remaining amount of hot water runs out, the heater 4
Is turned off, the hot water storage container 2 will not be fired.

(Eighth Embodiment) FIG. 9 is a block diagram showing a configuration of an eighth embodiment of the present invention. In the components of the electric water heater with a water purifier, the same numbers as in FIG. 1 are the same as those in the first embodiment. Reference numeral 80 denotes remaining hot water amount correcting means for correcting the remaining hot water amount in the hot water storage container 2 when the estimated remaining hot water amount in the hot water storage container 2 becomes full.

The operation of this embodiment will be described below. The operation for preventing empty heating will be described. When a fixed amount of water is supplied and the hot water is repeatedly supplied into the hot water storage container 2, the error of the remaining amount of hot water increases. Therefore, when the remaining hot water becomes full on the way, the remaining hot water amount correcting means 80 also resets the remaining hot water amount to a full state. As a result, the accumulated error is reduced, so that the heater 4 is turned off before the estimated remaining amount of hot water runs out, so that the hot water storage container 2 will not be empty.

(Embodiment 9) FIG. 10 is a block diagram showing the configuration of Embodiment 9 of the present invention. In the components of the electric water heater with a water purifier, the same numbers as in FIG. 1 are the same as those in the first embodiment. 90 is a temperature detecting means for detecting the temperature of the hot water in the hot water storage container 2.

The operation of this embodiment will be described below. The operation for preventing empty heating will be described. When a fixed amount of water is supplied and the hot water is repeatedly supplied into the hot water storage container 2, the error of the remaining amount of hot water increases. Here, when the temperature detecting means 90 rises to 100 ° C. or higher, the control means 6 determines that the water is in a drought state, and resets the remaining amount of hot water. As a result, since the accumulated error is reduced, the heater 4 is turned off before the estimated remaining amount of hot water is exhausted, so that the hot water storage container 2
Never boil.

[0037]

According to the first aspect of the present invention, there is provided a water purifier,
A water supply valve provided at an inlet of the water purifier, a hot water storage container having electric heating means, a switching valve for switching a flow of purified water from the water purifier to an external discharge side and a water supply side to the hot water storage container, and the hot water storage container An electric pump for discharging hot water inside the container, a drain cock for discharging water in the hot water storage container, a drain state detecting means for detecting an open / close state of the drain cock, and a main body. And an electric heater with a water purifier capable of preventing an empty heating state.

According to a second aspect of the present invention, there is provided a water purifier, a water supply valve provided at an inlet of the water purifier, a hot water storage container having electric heating means, and a flow of purified water from the water purifier to the outside of the body. A switching valve for switching the water supply side to the water supply side and the hot water storage container;
An electric pump for discharging the hot water in the hot water container to the outside of the body, a full water detecting means for detecting that the water in the hot water container is full, and a control means comprising a microcomputer for controlling the main body With this configuration, it is possible to realize an electric water heater with a water purifier capable of preventing an empty heating state.

According to a third aspect of the present invention, there is provided an electric water heater with a water purifier capable of preventing an empty heating state by providing a hot water discharge amount detecting means for detecting an amount of hot water from a hot water storage container. It will be realized.

According to a fourth aspect of the present invention, there is provided a water purifier, a water supply valve provided at an inlet of the water purifier, a hot water storage container having electric heating means, and a flow of purified water discharged from the water purifier out of the body. A switching valve for switching the water supply side to the water supply side and the hot water storage container;
An electric pump for discharging hot water in the hot water storage container to the outside of the container, a drain valve for discharging water in the hot water storage container, and control means including a microcomputer for controlling a main body are configured. This realizes an electric water heater with a water purifier capable of preventing an empty heating state.

According to a fifth aspect of the present invention, there is provided a water supply flow rate detecting means for detecting an amount of purified water supplied to a hot water storage container, and a hot water supply amount detecting means for detecting an amount of hot water discharged from the hot water storage container. By providing the means, it is possible to realize an electric water heater with a water purifier capable of preventing an empty heating state.

[0042] The invention described in claim 6 is characterized in that the empty boil- er is prevented by first supplying a fixed amount of purified water into the hot water storage container, thereby preventing the empty boil- er condition. It is intended to realize an electric water heater.

According to the seventh aspect of the present invention, the operation of estimating the remaining amount of hot water in the hot water storage container is repeated until a predetermined amount of purified water is supplied and the water heater is repeatedly operated until the hot water in the hot water storage container becomes full. An electric water heater with a water purifier capable of preventing the state is realized.

According to an eighth aspect of the present invention, when the estimated remaining amount of hot water in the hot water storage container becomes full, the remaining hot water amount correcting means for correcting the remaining hot water amount is provided, thereby preventing the state of idle heating. It is intended to realize an electric water heater with a water purifier.

According to a ninth aspect of the present invention, the estimated remaining amount of hot water in the hot water storage container is detected by a temperature detecting means to detect a drought condition and the remaining hot water amount is corrected, thereby preventing the state of empty heating. It realizes an electric water heater with a water purifier that can be used.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electric water heater with a water purifier according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing an electric water heater with a water purifier according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing an electric water heater with a water purifier according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing an electric water heater with a water purifier according to a fourth embodiment of the present invention.

FIG. 5 is a block diagram showing an electric water heater with a water purifier according to a fifth embodiment of the present invention.

FIG. 6 is a block diagram showing an electric water heater with a water purifier according to a sixth embodiment of the present invention.

FIG. 7 is an operation diagram of an electric water heater with a water purifier according to a sixth embodiment of the present invention.

FIG. 8 is a block diagram showing an electric water heater with a water purifier according to a seventh embodiment of the present invention.

FIG. 9 is a block diagram showing an electric water heater with a water purifier according to an eighth embodiment of the present invention.

FIG. 10 is a block diagram showing an electric water heater with a water purifier according to a ninth embodiment of the present invention.

FIG. 11 is a block diagram showing a conventional electric water heater with a water purifier.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water purifier 2 Hot water storage container 3 Switching valve 4 Heater 5 Electric pump 6 Control means 10 Water tap 11 Cold water discharge port 12 Hot water outlet 15 Drain cock 16 Drainage state detecting means 20 Full water detecting means 30 Hot water amount detecting means 40 Drain valve 50 Water supply flow rate Detecting means 51 Hot water quantity detecting means 60 Constant flow rate detecting means 70 Hot water quantity detecting means 80 Remaining hot water quantity correcting means 90 Temperature detecting means

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoji Uetani 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Takayuki Urata 1006 Odaka Kazuma Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. 72) Inventor Shizuka Azusa 1006 Kadoma, Kazuma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Takayuki Inoue 1006 Odaka Kazuma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. 1006 Kadoma Kadoma, Matsushita Electric Industrial Co., Ltd. (72) Inventor Yusuke Mochizuki 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F-term (reference) in Denki Sangyo Co., Ltd. 3L025 AA25 AD01 AD02 4B055 AA37 BA12 CC28 CD02 CD15 CD61 DA02 DB02 EA03 GB04 GB05 GB15 GB20 GB34 GC14 GC31 GD02

Claims (9)

[Claims] 1. A water purifier, a water supply valve provided at an inlet of the water purifier, a hot water storage container having an electric heating means, and a flow of purified water from the water purifier to a discharge side outside the body and a water supply side to the hot water storage container. A switching valve, an electric pump for discharging hot water in the hot water storage container to the outside, a drain cock for discharging the water in the hot water storage container, and an open / close state of the discharge cock. An electric water heater with a water purifier, comprising a drainage state detecting means and a control means comprising a microcomputer for controlling a main body. 2. A water purifier, a water supply valve provided at an inlet of the water purifier, a hot water storage container having electric heating means, and a flow of purified water from the water purifier to a discharge side outside the body and a water supply side to the hot water storage container. A switching valve for switching the water supply, an electric pump for discharging hot water in the hot water storage container out of the vessel, a full water detecting means for detecting that the water in the hot water storage container is full, and a main body for controlling the main body. An electric water heater with a water purifier having a control means comprising a microcomputer. 3. The electric device with a water purifier according to claim 2, wherein the remaining amount of hot water in the hot water storage container is estimated by hot water supply amount detecting means for detecting the amount of hot water discharged from the hot water storage container. Water heater. 4. A water purifier, a water supply valve provided at an inlet of the water purifier, a hot water storage container having an electric heating means, and a flow of purified water from the water purifier to a discharge side outside the body and a water supply side to the hot water storage container. A control valve comprising: a switching valve for switching between hot water, an electric pump for discharging hot water in the hot water storage container to the outside, a drain valve for discharging water in the hot water storage container, and a microcomputer for controlling the main body. And an electric water heater with a water purifier. 5. Hot water in a hot water storage container by means of a water supply flow rate detecting means for detecting an amount of purified water supplied into the hot water storage container and a hot water supply amount detecting means for detecting an amount of hot water flowing out of the hot water storage container. 5. The remaining hot water amount is estimated.
An electric water heater with a water purifier according to item 1. 6. The method according to claim 2, wherein a fixed amount of purified water is first supplied into the hot water storage container to prevent empty heating.
Or an electric water heater with a water purifier according to 3. 7. The remaining amount of hot water in the hot water storage container is estimated by repeatedly supplying a fixed amount of purified water and boiling water until the hot water in the hot water storage container becomes full. 7. An electric water heater with a water purifier according to 6. 8. The electric water heater with a water purifier according to claim 7, further comprising a remaining hot water amount correcting means for correcting the remaining hot water amount in the hot water storage container when the estimated remaining hot water amount in the hot water storage container becomes full. 9. The electric water heater with a water purifier according to claim 7, wherein the estimated remaining amount of hot water in the hot water storage container is detected by a temperature detecting means to detect a drought state and correct the remaining amount of hot water.