JPH09155366A - Hot water supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically obtain a safe and palatable water made by purifying water and palatable hot water formed by boiling purified water by directly connecting a hot water supply device to a water pipe. SOLUTION: Tap water is supplied to a water purifier 6 purifying tap water through a water supply valve 3 and a changeover valve 9 changing over the water outlet of the water purifier 6 to two directions is provided and one of two pipes is connected to an emitting orifice 10 emitting water to a sink and the other one of them is connected to a water heater 13. When the water heater 13 becomes a set value of water supply or less, the water supply valve 3 and the changeover valve 9 are changed over to supply water and, when a water level reaches a full water set value, the supply of tap water is controlled by a control unit 22 so as to be stopped by the water supply valve 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water heater with a built-in water purifier used mainly in ordinary households and offices.

[0002]

2. Description of the Related Art Conventionally, as a water heater, a water supply side is connected to a water pipe and water from the water pipe is heated by an internal heat exchanger to generate hot water at a predetermined temperature, or a tap water container is used. It is known to supply hot water by supplying it each time it is used.

A water heater and a water purifier having a water purifying function are also known as a single unit.

[0004]

However, these water heaters only heat tap water to generate hot water of an appropriate temperature, and the water purifier merely obtains purified water. You don't get good water or good water with one device.

[0005]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a supply of purified water and a hot water supply by directly combining tap water with a purification function and a boiling water function in one device. It is possible to supply hot water of improved quality.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, tap water is connected to a water purifier through a water supply valve, and a switching valve for switching the water outlet side of the water purifier between two directions is provided. Connected to the outlet that discharges outside the body, the other is connected to supply water to the water heater, and water supply to the water heater side switches the water supply valve and the switching valve when the water level falls below the set value of the low water level. However, when the water level reaches the set value of full water, the water supply valve stops the water supply by the control device.

Further, the accumulated water in the water purifier is drained to the outside of the body before the water supply from the water purifier to the discharge port or the water heater is started.

The accumulated water in the water purifier is drained according to the time when the water flow to the water purifier is stopped.

Further, a mineral addition device is provided in the water supply channel, and a drain pipe for draining accumulated water of the water purifier to the outside of the body also serves as an overflow of the water heating device.

In the water heater constructed as described above, by switching the water supply valve and the switching valve, the tap water is purified by the water purifier and discharged from the discharge port as it is,
Hot water can be obtained by supplying purified water to a water heating device. In addition, the water supply to the water heater side is automatically controlled by switching the water supply valve and the switching valve when the water level becomes lower than the set value of the low water level and stopping the water supply by the water supply valve when the water level reaches the set value of full water. It is possible.

Further, since the accumulated water in the water purifier is discharged to the outside of the body before starting the water supply from the water purifier to the outlet or the water heater, the water supply to the water outlet and the water heater is always maintained. It becomes purified water.

Further, since the accumulated water in the water purifier is drained according to the time during which the water flow to the water purifier is stopped, appropriate purified water is always supplied to the discharge port and the water heater. It is supplied with water and can save water.

Further, since the mineral addition device is provided in the water supply passage, calcium can be obtained by adding the mineral and tasty water having an appropriate hardness can be obtained.

Further, since the drainage pipe for draining the accumulated water of the water purifier to the outside of the vessel also serves as the overflow of the water heating device, the piping structure can be simplified.

[0015]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS. In the figure, 1 is a branch plug directly connected to the water supply. Reference numeral 2 is a pressure hose that connects the branch plug 1 and the body A of the water heater. Reference numeral 3 is an electromagnetic water supply valve connected to the pressure hose 2. The water supply valve 3 is a three-way valve and is connected to the flow rate adjusting cock 4 and the normal water pipe 5.

Further, 6 is a water purifier connected to the water passage of the flow rate adjusting cock 4 and the water passage pipe 5, and is constituted so that the tap water is purified by the activated carbon 7 and the hollow fiber membrane 8. A switching valve 9 for switching the water output between two directions is provided on the water outlet side of the water purifier 6, one of the water outlet sides is connected to a discharge port 10 for discharging the purified water as it is to a sink side such as a sink outside the body, and the other is heated. Means 11
A water supply port 35 is connected so as to supply water to the container 12 of the water heater 13 having the above.

The container 12 is provided with a discharge device 14 such as a pump for discharging hot water boiled in the container to the outside of the body. In addition, the discharge pipe 15 connected to the container 12
Water supply detection device 1 for detecting a set value of a low water level in the container 12
6 and a full water detection device 17 for detecting the set value of full water are provided. Further, the container 12 is provided with a boiling water sensor 18 for detecting boiling. Further, the hot water in the container 12 is discharged from the hot water supply port 21 to the outside of the body A by operating the discharge device 14 by operating the hot water discharge button 20.

Reference numeral 22 is a control device with a built-in microcomputer, which controls the heating means 11, the branch plug 1, the water supply valve 3, and the switching valve 9. The control device 22 is also associated with the boiling water sensor 18, the water supply detection device 16, and the full water detection device 17. The water supply to the water heater 13 side is performed by switching the water supply valve 3 and the switching valve 9 when the water level becomes lower than the set value of the low water level, and by the water supply valve 3 when the water level reaches the set value of full water. Control to stop. Further, the purified water is also discharged from the discharge port 10 by the water supply valve 3 and the switching valve 9.
To switch.

In FIGS. 1 and 2, 19 is a container 1.
2 is a water level gauge for displaying the water level, 26 is a mineral addition device described later, 29 is a display section showing the operating state of the water heater,
Reference numeral 30 is a lid for letting out steam in the container 12, 34 is a replacement lid for the water purifier 6, and 36 is a drain port for draining water in the container 12 by operating a valve 37.

The state of purified water in the above water heater will be described. When the tap water is directly connected to the tap water and supplied to the water supply valve 3 from the branch tap 1, the water supply valve 3 is normally opened to the flow rate adjusting cock 4 side, but the flow rate adjusting cock 4 is closed, so Water has stopped. Here, when the flow rate adjusting cock 4 is opened, tap water passes through the activated carbon 7 and the hollow fiber membrane 8 of the water purifier 6 and the purified water flows into the switching valve 9 as shown by the solid arrow. Normally, the switching valve 9 is opened to the sink side such as a sink, so that purified water is discharged from the discharge port 10 to the outside of the body.

Next, the hot water supply will be described. Hot water button 2
By operating 0, the discharge device 14 is operated and the hot water of the container 12 is discharged from the hot water supply port 21. When the amount of hot water decreases and reaches the water supply line a, that is, when it reaches the set value of the water supply or less, the signal of the water supply detection device 16 is received, the water supply valve 3 is opened, and the water purifier 6 is passed through the water pipe 5. To be watered. Further, it passes through the water purifier 6 and is passed through the switching valve 9. At this time, upon receiving a signal simultaneously with the water supply valve 3, the switching valve 9 is also switched to the water flow to the container 12 side, and water is supplied to the container 12 as indicated by the broken line arrow.

When the inside of the container 12 is filled with purified water, the full water b is detected by the full water detection device 17 and a signal is sent to the control device 22 to close the water supply valve 3 to stop the water supply and the switching valve 9 is also on the purified water side. It switches to.

When the water supply to the container 12 is started, the heating means 11 of the water heating device 13 is energized and the water heating is started. When the boiling water further advances and boils, the temperature gradient of the boiling water sensor 18 is processed by the control device 22 to detect boiling, and then the temperature is kept at a predetermined temperature. Hot water discharge is performed from the hot water supply port 21 by operating the discharge device 14 by operating the hot water discharge button 20 as described above.

As described above, in the water heater of this embodiment, since purified water is obtained and the purified water is boiled, it is possible to provide high-quality hot water having no odor of musty odor and mold odor and trihalomethane. Is.

(Second Embodiment) Next, a second embodiment will be described with reference to FIG. In this embodiment, the same parts as those in the first embodiment are designated by the same reference numerals and their description is omitted (the same applies to the description of the following embodiments).

In this embodiment, as shown in the drawing, a drain valve 2 is provided in a water channel for supplying water from a water purifier 6 to a container 12 via a switching valve 9.
3 is provided so that it can be switched between the container 12 side and the drain pipe 33 for draining to the sink side such as a sink. Then, before the water supply from the water purifier 6 to the discharge port 10 or the water heater 13 is started, the drain valve 23 is switched so that the accumulated water of the water purifier 6 is drained to the outside of the body A through the drain pipe 33.

Therefore, when the water supply reaches the set value or less,
The controller 22 first opens the water supply valve 3 to pass tap water to the water purifier 6 and opens the switching valve 9 to the container 12 side. Here, when the water purifier 6 does not pass water for a certain period of time, the drain valve 23 is opened to the drain pipe 33 side, and then the drain valve 23 is closed to start water supply to the container 12. .

In other words, when the water heater is used for the first time or the water heater is not used for a while, the accumulated water in the water purifier 6 is first drained for a certain period of time, and then the purified water is discharged and the container 1 of the water heater 13 is used.
It supplies water to 2. This is because when the water heater is not used for a while, the water after passing through the hollow fiber membranes 8 of the water purifier 6 is apt to rot over time due to almost no chlorine and become water containing various bacteria. .

Therefore, in this embodiment, tasty purified water is always supplied to the discharge port 10 and the container 12, so that tasty purified water and hot water can be provided.

The drain valve 23 may be switched manually or in conjunction with the control device 22 incorporated in the water heater.

(Third Embodiment) Next, a third embodiment will be described with reference to FIG. In addition to the configuration shown in FIG. 3, a means 25 having a timer function for storing the time when the water flow to the water purifier 6 is stopped and a function for measuring the water flow rate of the flowmeter 24 is provided, and these information are stored. The control device 22 processes and drains the accumulated water in the water purifier 6 according to the time when the water flow to the water purifier 6 is stopped.

Therefore, if the water supply receives a signal below the set value and the water purifier 6 has not been supplied for a certain period of time, first, the time corresponding to the time when the water supply to the water purifier 6 is stopped, After opening the drain valve 23, the drain valve 23 is closed, and then water supply to the container 12 is started.

As a result, similar to the second embodiment, water having a constant water quality containing no germs is automatically supplied to the discharge port 10 and the container 12, providing delicious purified water and hot water. It is possible. Furthermore, because the accumulated water is drained according to the time it stagnates, unnecessary drainage is suppressed,
It can always supply water of a certain quality.

Further, in the water purifier 6, the hollow fiber membrane 8 may be clogged with dust or the like with the lapse of time, and the drainage of water may deteriorate.
In that case, the drainage time can be optimally determined by combining a flowmeter and a pressure gauge on the outlet side of the water purifier 6 so that the microcomputer of the control device 22 processes the water.

(Fourth Embodiment) Next, a fourth embodiment will be described with reference to FIG.
It will be described based on. As shown in the figure, a mineral addition device 26 having coral sand, barley stone, etc. is provided in the water supply path between the discharge port 10 and the water purifier 6. The mineral device 26 is composed of a main body 27 and a cap 28 so that tap water can pass through. In addition, when minerals are not added to the purified water, the main body 27 can be used as a normal water purifier 6 by keeping minerals out. The hardness at this time is usually about 1 to 10.

Further, the installation position of the mineral addition device 26 is not limited to the position of the embodiment, but may be provided at another water supply passage position, for example, a water supply passage between the water supply valve 3 and the purified water tree. Further, the mineral component can be added to the water purifier 6 itself.

With such a configuration, tap water can be made to have a water quality containing minerals, and water that is healthier can be provided.

(Fifth Embodiment) Further, a fifth embodiment is shown in FIG.
It will be described based on. The basic structure is similar to that of the third embodiment. A drain port 31 is provided above the full line b of the container 12.
Is provided and connected to the drainage pipe 33 by the communication pipe 32, and should the full water detection device 16 fail, the drainage pipe 33
More overflow is drained. With this configuration, the piping configuration can be simplified and the cost can be reduced.

[0039]

As is apparent from the above description, the water heater according to the present invention is such that by switching the water supply valve and the switching valve, tap water is purified by the water purifier and discharged directly from the discharge port to the outside of the body, Hot water can be obtained by supplying purified water to a water heating device. As a result, it is possible to provide water purified by one device and high-quality hot water that does not have a chlorine odor and has a musty odor and trihalomethane removed.

Further, the water supply to the water heater side is performed by switching the water supply valve and the switching valve when the water level becomes lower than the set value of the low water level, and stops the water supply by the water supply valve when the water level reaches the set value of full water. It can be controlled automatically. As a result, unlike the conventional water heater, the opening / closing operation of the lid at the time of water supply is unnecessary, and the steam is no longer a concern.

Further, since the accumulated water in the water purifier is discharged outside the body before the water supply from the water purifier to the outlet or the water heater is started, the water supply to the outlet of the water purifier and the water heater is always maintained. It becomes purified water, and safe and delicious water and hot water can be provided.

Further, since the accumulated water in the water purifier is drained according to the time during which the water flow to the water purifier is stopped, proper purified water is always supplied to the discharge port and the water heater. It is supplied with water and can save water.

Further, since the mineral addition device is provided in the water supply passage, calcium can be added by the addition of mineral to obtain delicious water or hot water having an appropriate hardness.

Further, the drainage pipe for draining the accumulated water of the water purifier to the outside of the body also serves as the overflow of the water heating device, so that the piping structure can be simplified and the overflow can be dealt with when the full water detection of the water heating device fails. It is a thing.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing a first embodiment of a water heater according to the present invention.

FIG. 2 is an external perspective view of the same water heater.

FIG. 3 is an overall configuration diagram showing a second embodiment of the water heater of the present invention.

FIG. 4 is an overall configuration diagram showing a third embodiment of the water heater of the present invention.

FIG. 5 is an overall configuration diagram showing a fourth embodiment of the water heater of the present invention.

FIG. 6 is an overall configuration diagram showing a fifth embodiment of the water heater of the present invention.

[Explanation of symbols]

 3 Water Supply Valve 6 Water Purifier 9 Switching Valve 12 Container 13 Water Heater Device 22 Control Device 23 Drain Valve 26 Mineral Addition Device 31 Drain Port 33 Drain Pipe

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C02F 1/28 C02F 1/28 R F24H 9/00 F24H 9/00 W // A47J 27/21 101 A47J 27/21 101A 31/56 31/56

Claims (5)

[Claims] Claim: What is claimed is: 1. Tap water is connected to a water purifier through a water supply valve, and a switching valve for switching the water outlet side of the water purifier between two directions is provided, and one of the outlet sides discharges the purified water as it is outside the body. The other is connected to supply water to the water heater, and when the water level of the water heater is below the set value of the low water level, the water supply valve and the switching valve are switched to supply water, and the water level is full. A water heater that is controlled by a control device so that the water supply is stopped by the water supply valve when the set value is reached. 2. The water heater according to claim 1, wherein the accumulated water in the water purifier is drained out of the body before the water supply from the water purifier to the discharge port or the water heater is started. 3. The drainage of accumulated water in the water purifier is performed according to the time when the water supply to the water purifier is stopped.
The water heater described. 4. The water heater according to claim 1, wherein a mineral addition device is provided in the water supply channel. 5. The water heater according to any one of claims 2 to 4, wherein the drainage pipe for draining the accumulated water of the water purifier to the outside of the body also serves as an overflow of the water heater.