JP2600292B2 - Hot water mixing equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing apparatus having a drainage operation.

2. Description of the Related Art In general, a faucet or an existing hot / water mixing device performs an artificial draining operation. Hereinafter, the draining operation of the above-described conventional hot water mixing apparatus will be described with reference to the drawings.

FIG. 4 shows a thermostat shower bath fitting with a fixed amount of water stoppage of a conventional hot and cold water mixing apparatus. In FIG. 4, 1
Is a hot water temperature setting knob, 2 is a switching knob, 3 is a faucet, 4
Is a shower, 5 is a fixed water stop knob, 6 is a hot water stopcock, 7
Denotes a water stopcock and 8 denotes a drain tap. The operation of the hot water mixing apparatus configured as described above will be described below. Use the hot water temperature setting knob 1 to set an arbitrary mixed hot water temperature from water to hot water, select the faucet 3 side or shower 4 side or hot water supply destination by operating the switching knob 2 and mix when the tap water, water stoppage and fixed amount are reached. To stop the supply of hot water 5
Operate.

The draining operation of the conventional hot water mixing device is performed by the hot water stop cock 6,
This is performed by closing the water-side water stop cock 7 and opening the drain tap 8.

Problems to be Solved by the Invention However, in the above configuration, a manual operation is always required by closing the hot water stopcock, the water stopcock and opening the water drainage stopper as a drainage operation, and also requires a complete drainage operation. There was a problem that water could not be drained.

The present invention has been made in view of the above problems, and provides a hot and cold water mixing device that can be remotely operated and performs drainage without a closed state while performing a tapping operation and a draining operation.

Means for Solving the Problems To solve the above problems, a hot water mixing apparatus of the present invention includes a mixing valve for mixing high hot water and water, a mixing valve driving device for driving the mixing valve, and a flow rate for detecting a flow rate. A detector, a water shutoff valve for controlling water stoppage of the mixed hot water, a water shutoff valve driving device for driving the water shutoff valve, a water drainage plug, an operation unit having a tapping operation unit, and a signal of the operation unit. A controller is provided for controlling the valve opening of the water stop valve in response to a water cutoff signal from the flow rate detector.

Operation According to the above-described configuration, the opening degree of the water stop valve is controlled by operating the tapping operation unit of the operation unit, so that the tapping operation and the drainage operation can be combined, and it is necessary to provide a special drainage operation unit. As a result, the drainage operation can be reduced, and reliable drainage without any residual state can be performed.

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

FIG. 1 is a configuration diagram including a cross-sectional view of a main part of a hot water mixing apparatus according to a first embodiment of the present invention. In FIG. 1, high-temperature hot water supplied from a water heater 9 through a hot water supply pipe 11 having a hot water stopcock 10 and a water supply pipe having a water side water stopcock 12 are provided.
The water supplied through 13 is regulated by an automatic pressure regulating valve 15 via a check valve 14 and is driven by a mixing valve driving device 19 composed of a stepping motor 16, a gear 17 and a microswitch 18. A DC motor 25, a gear 26, and a micro motor 26 are mixed through a thermistor 21 that detects the temperature of the mixed water, a ball 22 that is made of a magnetic material that is rotated by a water flow, and a flow sensor 24 that detects the output of the MR element 23. A water tap / water stop / shower tap 30 at a water shutoff valve 29 having a switching function driven by a water shutoff valve drive unit 28 having a switching function and constituted by a switch 27, and a bathtub tap 32 for supplying hot water to a bathtub 31. Select and control any of It also has a drain plug 33 for draining water in the hot and cold water mixing device, controls the mixing valve drive device 19, the water stop valve drive device 28 with a switching function, and detects signals from the thermistor 21 and the flow rate sensor 24. , And the controller 34 is constituted by a remote controller 36 having a tapping switch 35 for controlling tapping into the shower 30 or the bathtub 32.

FIG. 2 shows a remote controller 36 having a tap switch 35, and FIG. 3 is a control block diagram.

The operation of the hot water mixing apparatus configured as described above will be described below with reference to FIGS. 1, 2, and 3. FIG. For water drainage, each stopcock of hot water supply pipe 11 and water supply pipe 13
When the tapping switch 35 is pressed after closing the drain taps 33 after opening the drain valves 10 and 12, the hot water is not supplied. In order to equalize the opening degree between the hot water side and the water side, when the power is turned on, the pulse of the stepping motor 16 from the front opening point or the front closing point of the mixing valve 20 is stored in the controller 34, and the intermediate position is pulsed. I do. The water stop valve 29 with the switching function
Shower 30 from high to low outlet at regular intervals
The outlets of the bathtub 32 for supplying hot water to the bathtub 31, the secondary sides of the water stopcocks 10 and 12, and the water drainage plug 33 are electrically connected to drain the water from the hot water mixing apparatus. After repeating the above operation several times,
The water stop valve 29 having the switching function is controlled to the water stop position, and a series of water draining operations is completed.

As described above, according to the present embodiment, by operating the tapping switch 35 of the remote controller 36, the artificial operation of draining water is reduced by half, and reliable drainage without residual state can be performed. The opening and closing of the drain plug 33 can be drained in a shorter time and without labor by using a drive device.

 Hereinafter, a second embodiment of the present invention will be described.

The configuration of the second embodiment of the present invention is the same as FIGS. 1, 2 and 3. The operation will be described below.

Each water stopcock 10,1 of hot water supply pipe 11 and water supply pipe 13 for drainage
When the tap 2 is closed and the drain plug 33 is opened, when the tapping switch 35 of the remote controller 36 is operated, hot water is not supplied. As for the opening degree, the hot water side full opening and the water side full opening are repeated at regular intervals. In the meantime, the water stop valve 29 with the switching function is a shower 30 and a bathtub from a high-level outlet to a low-level outlet at regular intervals.
Each outlet of the bathtub 32 for hot water supply to 31 and each stopcock 1
The secondary side of 0, 12 and the drain plug 33 are electrically connected to drain the water from the hot water mixing apparatus. After the above operation is repeated several times, the water stop valve 29 having the switching function is controlled to the water stop position, and a series of water draining operations ends.

As described above, according to the second embodiment, the water staying at the mixing valve 20 due to surface tension can be reliably drained without remaining.

If the opening and closing of the drain plug 33 is performed by a driving device, the drain can be drained in a shorter time and without any labor.

As an effect described above, by operating the tapping operation unit, the control unit controls the mixing valve to open both the hot water side and the water side, so that the draining operation is performed in a state where one side is closed, and residual water is removed. Drainage can be reliably performed without remaining. In addition, when a plurality of taps are provided, the drainage from the upper tap is drained, so that the drainage of the upper tap does not flow into the lower tap and remains there, and the mixing valve and the water shutoff valve are set in time. , The power consumption can be reduced without fear of forgetting to cancel the operation.

By opening and closing the drain plug with the driving device, the drain can be drained in a short time with the operation of the remote control unit and without requiring any labor even when it is installed in the concealed unit.

As described above, the present invention provides a mixing valve that mixes high-temperature hot water and water to obtain an appropriate temperature, a mixing valve driving device that drives the mixing valve, a flow rate detector that detects a flow rate, and tapping of the mixed hot water. A water shutoff valve for controlling water shutoff, a water shutoff valve driving device for driving the water shutoff valve, a drain plug, an operation unit having a tapping operation unit, a signal of the operation unit, and the flow rate detector The following effects can be obtained by providing a controller for controlling the water shutoff valve driving device according to the water cutoff signal by the above.

1). Since the water draining operation is performed by the automatic operation, human operations can be reduced, and water can be drained in a short time.

2). Since water can be easily drained using the tapping operation unit of the operation unit, the tapping operation and the drainage operation can be combined.

3). Since the drainage is performed by controlling the water stop valve, active and reliable drainage that is not possible in the conventional drainage operation can be performed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram including a main part cross-sectional area of a hot water mixing apparatus in first and second embodiments of the present invention, FIG. 2 is a front view of a remote control of the hot water mixing apparatus, and FIG. FIG. 4 is a control block diagram of the mixing device, and FIG. 4 is a perspective view of a thermostat shower bath fitting with fixed water shutoff as a conventional hot and cold water mixing device. 10 ... hot water stopcock, 12 ... water stopcock, 16 ... stepping motor, 19 ... mixing valve drive, 20 ... mixing valve, 23
…… MR element, 24 …… Flow sensor, 28 …… water stop valve driving device, 29 …… water stop valve, 33 …… water drain plug, 34 …… controller.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Koji Mihara 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. In company

Claims (4)

(57) [Claims] 1. A mixing valve for mixing high-temperature hot water and water, a mixing valve driving device for driving the mixing valve, a flow rate detector for detecting a flow rate, and a shutoff valve for controlling tapping and stopping of the mixed hot water. A water shutoff valve driving device for driving the water shutoff valve, a drain tap, an operation unit having a tapping operation unit, a tapping start signal from the operation unit, and a cutoff signal from the flow rate detector to stop the water supply. A hot and cold water mixing device comprising a controller that controls opening of a water valve. 2. The hot and cold water mixing device according to claim 1, wherein the controller controls both the hot side and the water side of the mixing valve to be in an open state when the hot water operation section of the operation section is operated and the flow rate detector detects a water outage. . 3. A water outlet having a plurality of taps, wherein when one of the tapping operation sections corresponding to each tap of the operation section is operated and the flow rate detector detects a water outage, the water stops in order from the higher tap. The hot and cold water mixing device according to claim 1, wherein the valve is controlled to open. 4. The hot and cold water mixing device according to claim 1, further comprising a driving device for driving the water drain plug, and opening the water drain plug by operating a tapping operation unit.