JP2814743B2 - Water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling tapping of mixed hot water, tapping and stopping of mixed hot water that has passed through a water purifier, and simple and accurate tapping of purified water and purified water. The present invention relates to a hot water supply device that can supply water.

2. Description of the Related Art In recent years, hot water supply devices have become mainstream capable of discharging and stopping mixed water obtained by mixing hot water and water and water that has passed through a purifier, and there is a demand for improved usability.

Conventionally, this type of hot water supply apparatus generally has a configuration as shown in FIG. Hereinafter, the configuration will be described.

As shown in the figure, hot water supply sluice 1 is connected to mixing valve 3 together with water supply pipe 2. The spout 4 spouts unpurified mixed hot water. The temperature / flow rate adjusting section 5 adjusts the temperature and flow rate of the mixed hot water spouted from the spout 4. The water purifier 6 purifies water from the water supply pipe 2. The purified water filtered by the water purifier 6 was discharged from a purified water discharge port 8 through a water purification stopcock 7.

Problems to be Solved by the Invention In such a conventional hot water supply device, the piping configuration becomes complicated, and when installed under a wash basin or under a kitchen, the installation space becomes narrow, or separate taps must be opened at the time of tapping. It was very inconvenient.

The present invention solves the above-mentioned problem, and is easy to operate by simultaneously controlling both the case of obtaining one spout and clean water and the case of obtaining a mixed hot water and the case of obtaining a mixed hot water or unpurified water. It is intended to provide a hot water supply device.

Means for Solving the Problems In order to achieve the above object, the present invention provides a mixing valve for mixing hot water from a hot water supply pipe and water from a water supply pipe, a mixing valve driving device for driving the mixing valve, and a mixing hot water. A temperature detector for detecting the temperature, a water stoppage switching valve for switching tapping, stopping water, and tapping water,
A water stoppage switching valve driving device for driving the waterstop switching valve,
A mixing hot water pipe and a water pipe located on the secondary side of the water shutoff switching valve, a water discharge port for merging the mixed hot water pipe and the water pipe to perform a desired hot water or water discharge, and a water purifier disposed in the water channel path;
A controller for controlling the mixing valve driving device and the water shutoff switching valve driving device; and a setting device for sending an instruction to the controller, wherein a mixing hot water pipe and a water pipe are provided between the water shutoff switching valve and the water discharge port. And in parallel, and when there is an instruction for purified water tapping from the setter, the water shutoff switching valve is controlled to switch to the mixing hot water pipe until the signal from the temperature detector falls below a certain temperature. When the signal from the detector falls below a certain temperature, the water shutoff switching valve is switched to the water pipe side to conduct water.

Action The present invention solves the above problem by operating the setter to drive the water cutoff switching valve drive device via the controller to switch the water cutoff switching valve to the water pipe side, and the water purifier provided in the water pipe. Purified water can be obtained, and the water shutoff switching valve drive device can be driven to switch the water shutoff switching valve to the mixing hot water pipe side to obtain mixed hot water (unpurified water). Further, since the purified water is discharged when the signal from the temperature detector falls below a certain temperature, desired tapping or tapping can be performed, and an easy-to-operate hot water supply device can be obtained.

Embodiment An embodiment of the present invention will be described below with reference to FIG.

As shown in the figure, a water supply pipe 9 and a hot water supply pipe 10 are connected to a strainer 11.
And a check valve 12, 13 and a pressure equalizing valve 14.
The pressure equalizing valve 14 absorbs pressure fluctuations of the water from the water supply pipe 9 and the hot water from the hot water supply pipe 10. The mixing valve 15 mixes hot water and water, and is driven by a mixing valve driving device 16. Temperature detector 17
Is for detecting the temperature of the mixed hot water, and the flow rate detector 18 detects the flow rate of the mixed hot water. The shutoff switching valve 19 performs tapping, shutoff, tapping or flow control of the mixed hot water, and is driven by a shutoff switching valve driving device 20. The mixed hot water pipe 21 passes the mixed hot water, and the water pipe 22 passes the purified water. A water purifier 23 for purifying water and a water quality conditioner 24 for conditioning water quality for each pH value, hardness, molecular diameter, and additives (mineral components, etc.) are provided in the middle of the water pipe 22, and a mixed hot water pipe 21 and a water pipe are provided. 22 is connected to the discharge port 25. The controller 26 controls the mixing valve driving device 16, the water shutoff switching valve driving device 20, and the like based on the outputs of the temperature detector 17 and the flow detector 18 and the input values of the setting device 27.

Next, the operation of the above embodiment will be described. When the mixed hot water is discharged, when the hot water switch (not shown) of the setter 27 is turned on as shown in FIG. It is switched to the mixing hot water pipe 21 side, and the water from the water supply pipe 9 and the hot water from the hot water supply pipe 10 respectively pass through the check valves 12 and 13, the pressure fluctuation is absorbed by the pressure equalizing valve 14, and Mixed. The temperature of the hot water after mixing is detected by the temperature detector 17, and if the deviation between the set temperature and the detected temperature is large, the mixing valve driving device 16 is driven by a signal from the controller 26 to approach the set temperature. The mixed hot water passes through the flow rate detector 18, the flow rate is adjusted by the water stoppage switching valve 19, and the mixed hot water is discharged to the water discharge port 25 through the mixed hot water pipe 21. When stopping the water, the water is stopped by closing the water stop switching valve 19.

Next, when discharging purified water, as shown in FIG. 2 (b), when a water switch (not shown) of the setting device 27 is turned on, the water stoppage switching valve 19 is switched to the mixing hot water pipe 21 side. Until the detected temperature of the temperature detector 17 detects below the set temperature, water is discharged from the mixing hot water pipe 21, and when the temperature falls below the set temperature, it is switched to the water pipe 22, passing through the water purifier 23 and the water quality conditioner 24 on the way, The water is purified and refined to discharge water, and the water stoppage switching valve 19 performs water discharge or water stoppage. In the case of switching from the state of discharging the mixed hot water to discharge water or in the case of discharging water from the state in which the mixed hot water was previously discharged and stopped, until the detection temperature of the temperature detector 17 detects the temperature equal to or lower than the set temperature, Water is discharged through a water pipe 22 that has been input to the controller 26 in advance so as to be discharged from the mixed hot water pipe 21 and detects a temperature below a set temperature.

As described above, according to the hot water supply apparatus of the embodiment of the present invention, the water shutoff switching valve 19 and the water discharge port 25 are connected in parallel by the mixing hot water pipe 21 and the water pipe 22, and the water purifier 23 and the water By providing the regulator 24, it is possible to prevent the hot water from being mixed with the water passing through the water purifier 23 and the water quality conditioner 24, thereby increasing the water purification effect and suppressing the propagation of various bacteria. Further, the water passing through the water purifier 23 and the water quality conditioner 24 and the mixed hot water passing through the mixing valve 15 can be simultaneously controlled.

Next, another embodiment of the present invention will be described. First
The setting device 27 in the figure is provided with a switch (not shown) that can discharge unpurified water. Other configurations are the same as those in the above embodiment.

When the mixed hot water or the unpurified water is discharged, the hot water switch or the water (unpurified water) switch of the setting device 27 is turned on as shown in FIG. The mixed water or unpurified water is discharged by performing the same operation as the discharge of the hot water. In the case of discharging the purified water, the controller 26 for controlling the discharge of the purified water only when this signal is inputted by turning on the water (purified) switch of the setting device 27 as shown in FIG. 3 (b). The water shutoff switching valve 19 is switched, water is guided to the water pipe 22, and the purified water is discharged through the water purifier 23.

As described above, according to the hot water supply apparatus of the embodiment of the present invention, the controller 26 controls the setting device 27 so as to guide water only to the water pipe 22 when tapping clean water.
Since the input is made more, the purified water and the unpurified water can be discharged separately. As described above, according to the hot water supply apparatus of the embodiment of the present invention, since the water pipe 22 is connected to the water purification outlet 28 provided separately from the water outlet 25, the purified water and the mixed hot water or the unpurified water are completely separated. It is easy to recognize by the user and clean.

Effect of the Invention As is apparent from the above embodiments, according to the present invention, a water stoppage switch valve for performing tapping, stopping water, and tapping water and a water outlet are connected in parallel by a mixing hot water pipe and a water pipe, Since the water purifier is installed on the way, the controller controls the water shutoff switching valve drive device to operate the water shutoff switching valve by operating the setter, so it is necessary to open and close the water purification passage and the unpurified water passage separately. The hot water can be controlled for each of the purified water passage and the unpurified water passage only by operating the setting device.
Switching of purified water and unpurified water can be controlled simultaneously.

In addition, by installing a water purifier, water quality conditioner, etc. on the secondary side of the water stoppage switching valve, it is possible to comply with the Japan Water Works Association standard regarding water pressure resistance of the water purifier, and it is necessary to work after closing the water stoppage switching valve. Therefore, switching and maintenance of the water purifier and water quality conditioner are facilitated.

Furthermore, since the user is conscious of the operation of the setting device, subsequent operations up to tapping by control are omitted,
There is no mistake in tapping the purified water and unpurified water, and the controller operates the setter to control the water shutoff switching valve drive and drives the water shutoff switching valve to select between the purified water passage and the unpurified water passage. And the unpurified water is no longer mixed. In addition, at the time of water purification setting, when the temperature of the mixed hot water falls below a certain temperature, water is guided from the water pipe, so that mixing of the hot water can be prevented, and the water purification effect can be improved and the propagation of various bacteria can be suppressed.

[Brief description of the drawings]

FIG. 1 is a block diagram of a hot water supply apparatus according to one embodiment of the present invention, FIGS. 2 (a) and 2 (b) are control flowcharts of the hot water supply apparatus, and FIGS. 3 (a) and 3 (b) are other drawings of the present invention. FIG. 4 is a configuration diagram of a conventional hot water supply apparatus. 9 ... water supply pipe, 10 ... hot water supply pipe, 15 ... mixing valve, 16 ... mixing valve drive, 17 ... temperature detector, 19 ... water stop switching valve, 20 ... water stop switching valve drive , 21 ... mixed hot water pipe, 22
... water pipe, 23 ... water purifier, 25 ... spout, 26 ... controller, 27 ... setting device.

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masayoshi Takamitsu 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-2-197730 (JP, A) JP-A-1- 300128 (JP, A) JP-A-61-153340 (JP, A) JP-A-62-40394 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24D 17/00

Claims (1)

(57) [Claims] A mixing valve for mixing hot water from a hot water supply pipe with water from a water supply pipe; a mixing valve driving device for driving the mixing valve;
A temperature detector for detecting the temperature of the mixed hot water, a shutoff switching valve for switching tapping, shutoff and tapping, a shutoff switching valve driving device for driving the shutoff switching valve, and a secondary of the shutoff switching valve Mixing water pipe and water pipe located on the side, a water outlet for combining the mixing water pipe and the water pipe to discharge a desired hot water or water, a water purifier disposed in the water channel path, the mixing valve driving device, and the stop. A controller that controls the water switching valve drive device, and a setting device that sends an instruction to the controller, while connecting the water shutoff switching valve and the water discharge port in parallel with a mixing hot water pipe and a water pipe, When there is an instruction for purified water tapping from the setter, control is performed so that the water shutoff switching valve is switched to the mixed hot water pipe until the signal from the temperature detector becomes lower than a certain temperature, and there is a signal from the temperature detector. When the temperature falls below the temperature, the water stop valve is switched to the water pipe side Hot water supply apparatus adapted to the water guide.