JP6286790B2 - Water discharge device - Google Patents

Description

  The present invention relates to a water discharge device, and more particularly to a hot and cold water mixing type electronically controlled water discharge device for a bathroom.

  In general, a water discharge device in a bathroom is equipped with a hot and cold water mixing tap and can be switched between a water discharge port and a shower head to discharge water. Sometimes I leave it alone.

  Measure the water discharge time or water discharge amount for hot water at the water outlet side, and stop until the measured value reaches a predetermined value. Japanese Patent Application Laid-Open No. H10-228707 provides a switch that can switch between continuous water discharge and water discharge.

  This is to detect the direction of the spout provided in a horizontally rotatable manner, and to switch between constant water discharge and continuous water discharge according to the direction of detection in this direction. If the spout is directed to the washing area, perform continuous water discharge.

  By the way, there is a case where it is desired to carry out a constant amount of water discharge on the washing station side, such as when the wash basin is filled with hot water, but the above cannot be met. Of course, when water is discharged to the washing area, the above-mentioned point can be met by making it possible to perform quantitative water discharge as required. However, when washing with hot water stored in the washbasin, generally low temperature hot water is used, so in addition to switching between continuous water discharge and quantitative water discharge, it is necessary to adjust the hot water temperature when washing the face. It becomes.

Japanese Utility Model Publication No. 6-8466

  This invention is made | formed in view of the said problem, and makes it a subject to provide the water discharging apparatus which can simplify the water discharging operation in the case of performing the face washing using the hot water discharged from the water outlet.

  The water discharge device according to the present invention is a water discharge device that mixes supplied water and hot water and discharges hot water having a set temperature according to a set temperature from either one of the water discharge port or the shower head. A water stop valve that performs water discharge and water stop, a flow rate adjustment unit that adjusts the mixing ratio of water and hot water, a flow rate measurement unit that measures the flow rate of the mixed hot water, hot water temperature setting and water discharge destination An operation unit for selection, and a controller for controlling the flow rate adjusting unit according to the hot water temperature set by the operation unit and switching the flow path to the water discharge destination selected by the operation unit, The controller has two modes: continuous water discharge that stops water upon receiving a water stop instruction from the operation unit, and quantitative water discharge that stops water when the flow rate measured by the flow rate measurement unit reaches a predetermined amount. The controller is set in the operation unit in the constant water discharge mode When water temperature is higher than a predetermined temperature, the temperature of the hot water discharges is characterized in that it is intended to suppress to the predetermined temperature.

  According to the present invention, it is possible to eliminate waste without leaving hot water at the time of metered water discharge. Moreover, since the hot water temperature is kept below a predetermined temperature at the time of metered water discharge, it is possible to obtain hot water for face washing, which is preferably lower than the normal temperature hot water, without requiring a separate temperature adjustment operation. Thus, the water discharge operation during the face washing can be simplified.

It is a block diagram of an example of an embodiment of the invention. It is explanatory drawing which shows the hot water temperature characteristic in continuous water discharge and fixed amount water discharge same as the above.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. The illustrated example is an electronic faucet type water discharge device of a hot and cold water mixing type, in which a water supply pipe 11 and a hot water supply pipe 21 are mixed via a mixing unit 3. The mixing tube 4 is connected to the water outlet 6 and the shower head 7 via the flow path switching valve 5.

  The water supply pipe 1 is provided with a manually open / close stop valve 11, a check valve 12 and a flow rate adjustment valve 13, and the hot water supply pipe 2 has a manually open / close stop valve 21, a check valve 22, and A flow rate adjusting valve 23 is provided. The hot water supply pipe 2 is provided with a flow rate sensor 24.

  The mixing pipe 4 is provided with an electromagnetic water stop valve 41 and a flow rate sensor 42, and a high cut valve that prevents passage of hot water above a predetermined temperature between the flow path switching valve 5 and the shower head 7. 70 is provided.

Here, each operation | movement of the said flow regulating valves 13 and 23, the water stop valve 41, and the flow-path switching valve 5 is controlled by the controller 8 comprised with the microcomputer etc. FIG. The thermistor 15 for measuring the temperature of the water flowing through the water supply pipe 1, the thermistor 25 for measuring the temperature of the hot water flowing through the hot water supply pipe 2, and the thermistor 55 for measuring the temperature of the hot water flowing through the mixing pipe 5 are connected to the controller 8. Has been. For this purpose, the controller 8 determines the temperature of the water supplied through the water supply pipe 1,
The temperature of hot water supplied through the hot water supply pipe 2 and the temperature of hot water discharged through the mixing pipe 4 can be recognized. The controller 8 can recognize the amount of water and the amount of hot water supplied through the water supply pipe 1 and the hot water supply pipe 2 by the flow rate sensors 14 and 24, and can recognize the amount of hot water discharged by the flow rate sensor 42. be able to.

  In the figure, 9 is a power supply circuit, and 80 is an operation unit connected to the controller 81. The operation unit 80 displays the set hot water temperature and whether to discharge from the water outlet 6 side or from the shower head 7 side. A display unit for displaying is provided.

  A pipe 18 directly connecting between the water stop valve 11 and the shower head 7 provided in the water supply pipe 1 is for emergency water discharge at the time of a power failure, and is provided with a manually open / close type water stop valve 19 in the middle. In the figure, 17 and 27 are drain plugs.

  The water discharge device discharges hot water having a temperature selected by the operation unit 80 of the controller 8 from the water outlet 6 or the shower head 7 selected by the operation unit 80. At this time, the controller 8 starts the water discharge by opening the water stop valve 41 and switches the flow path switching valve 5 according to the selection of the discharge from the water discharge port 6 or the shower head 7. Further, the controller 8 controls the flow rate adjusting valves 13 and 23 from the output values of the thermistors 15 and 25, respectively, and adjusts the flow rate of water and the flow rate of hot water, so that the hot water having hot water temperature set in the operation unit 80 is obtained. In addition, feedback control of the hot water temperature is performed from the output value of the thermistor 55. When a water stop operation is performed on the operation unit 80, the controller 80 closes the water stop valve 41 to stop the water.

  Here, the opening / closing control of the water stop valve 41 is a case where continuous water discharge is performed, and when the user instructs the constant water discharge from the water discharge port 6 in the operation unit 80, the discharge after opening the water stop valve 41. The amount of hot water to be detected is detected by the flow sensor 42, and the water stop valve 41 is closed when the detected value reaches a preset amount (for example, an amount that can fill the washbasin).

  In addition, since this fixed amount of water discharge is not the time during which the water stop valve 41 is opened, but the flow rate is measured and controlled by the flow rate, when the preset amount is 3 liters, even in an environment where the water pressure is different Water is stopped when only 3 liters are discharged.

  When using the shower 7 or washing the body with hot water from the spout 6, hot water of about 40 ° C. is used. On the other hand, when washing the face with hot water filled in the basin, hot water of 32 to 34 ° C., which is slightly lower than the body temperature, is suitable. From this, in this water discharge device, when the fixed amount water discharge from the water discharge port 6 is instructed, even if the hot water temperature set by the operation unit 80 exceeds a predetermined temperature (for example, 32 to 34 ° C. above), the predetermined water discharge is performed. A constant amount of hot water is to be discharged.

  At the time of continuous water discharge, the temperature of the discharged hot water corresponds to the set temperature indicated by the operation unit 80 as indicated by K in FIG. However, at the time of constant water discharge, the controller 8 controls the flow rate adjusting valves 13 and 23 so that the temperature of the discharged hot water does not rise above the predetermined temperature T2. M in FIG. 2 indicates this case. When the set temperature is lower than the predetermined temperature T2, hot water corresponding to the set temperature is discharged. When the set temperature is higher than the predetermined temperature T2, the temperature of the discharged hot water is limited to T2. T1 in FIG. 2 is a minimum temperature that can be set.

  The hot water temperature setting in the operation unit 80, the selection of the discharge destination (whether the water outlet 6 or the shower head), and the selection of continuous water discharge or quantitative water discharge may be instructed by any method. For example, in addition to having a hot water temperature setting unit, a discharge destination selection unit, and a continuous water discharge quantitative water discharge selection unit individually, in addition to the hot water temperature setting unit and the discharge destination selection unit, the quantitative water discharge from the water outlet 6 For example, a dedicated instruction unit is provided. In addition, it may be possible to perform a constant amount of hot water discharge according to the set temperature, or to perform a constant amount of water discharge from the shower head 7.

DESCRIPTION OF SYMBOLS 1 Water supply pipe 2 Hot water supply pipe 3 Mixing part 4 Mixing pipe 5 Flow path switching valve 6 Water outlet 7 Shower head 8 Controller 13 Flow rate adjustment valve 23 Flow rate adjustment valve 24 Flow rate sensor 41 Water stop valve 42 Flow rate sensor

Claims (1)

  A water discharge device that mixes supplied water and hot water and discharges hot water according to the set temperature from either the water outlet or the shower head. A flow control unit for adjusting the mixing ratio of water and hot water, a flow rate measuring unit for measuring the flow rate of the mixed hot water, an operation unit for hot water temperature setting and water discharge destination selection, A controller for controlling the flow rate adjusting unit according to the hot water temperature set by the operation unit and switching the flow path to the water discharge destination selected by the operation unit. The controller includes two modes of continuous water discharge for stopping water in response to a water instruction and quantitative water discharge for stopping water when the flow rate measured by the flow rate measurement unit reaches a predetermined amount. In mode, the hot water temperature set in the operation unit is higher than the specified temperature. , Water discharge device, characterized in that the temperature of the hot water discharging is to suppress to the predetermined temperature.

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