JP2013002158A - Faucet device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a faucet device capable of suppressing water hammering while resolving a problem with a cost and an installation site.SOLUTION: In a water supply passage 2, an electric-operated water supply valve 6 is provided for adjusting the supply amount of water. In a hot water supply passage 3, an electric-operated hot water supply valve 7 is provided for adjusting the supply amount of hot water. A solenoid valve 8 for starting/stopping the supply of water, hot water or mixed water is provided in a discharge passage or in each of the water supply passage and the hot water supply passage. Control means 15 is disposed on the downstream side of the electric-operated water supply valve and the electric-operated hot water supply valve for allowing the electric-operated water supply valve to reduce the supply amount of water and the electric-operated hot water valve to reduce the supply amount of hot water, and then for allowing the solenoid valve to stop the supply of water, hot water or mixed water.

Description

  The present invention relates to a faucet device in which a water hammer is suppressed.

  The water hammer is also called a water hammer effect or the like, and is a phenomenon in which shock or vibration is generated in the pipe due to the inertia of the fluid when a pressurized fluid such as water flowing in the pipe is suddenly stopped. For example, a water hammer is recognized as a sound generated when a water supply channel is opened and closed by a solenoid valve. Such a water hammer is not only a problem such as sound and vibration, but also causes a failure of various devices such as a pump for pumping fluid.

  The automatic mixing faucet described in the following Patent Document 1 is provided in a hot water side flow path for supplying hot water, and an electric hot water side stop cock for stopping the supply of hot water, and a water side flow path for supplying water And an electric water-side water stop cock that stops the supply of water. In addition, the automatic mixing faucet is provided in a joint channel where the hot water channel and the water channel flow together, and measures the flow rate of the mixed hot water between the hot water in the hot water channel and the water in the water channel. Equipped with an electric flow meter. Further, the automatic mixing faucet includes a control unit that closes the hot water faucet and the water faucet independently or simultaneously based on the measurement result of the flow meter to stop the supply of the mixed hot water.

JP 2001-165457 A

  In the automatic mixing faucet described in Patent Literature 1, when the control unit determines that the mixed hot water has reached the set amount of hot water, the control unit simultaneously closes the water side water faucet and the hot water side faucet. Although water injection is stopped, a pulse-driven solenoid valve is generally used for the water-side stop cock and the hot-water stop cock. For this reason, even with the automatic mixing faucet described in Patent Document 1, the occurrence of water hammer is a concern.

  In order to suppress the water hammer, it is a common practice to install a water hammer prevention device in the primary channel such as releasing pressure or closing the solenoid valve step by step. However, when such a water hammer preventer is installed, the cost of the water faucet device increases, and there is a disadvantage that a place for installing the water hammer preventer must be secured.

  The present invention has been made in view of the circumstances as described above, and it is an object of the present invention to provide a water faucet device that can solve the problems of cost and installation location and can suppress a water hammer.

 In order to solve the above-described problem, the faucet device of the present invention includes a water supply channel for supplying water, a hot water supply channel for supplying hot water, water supplied to the water supply channel and the hot water supply channel, and water supplied from the water supply channel, In a faucet device provided with hot water supplied from a hot water supply channel or a water discharge channel through which mixed water mixed with hot water flows, the water supply channel is provided with an electric water supply valve for adjusting the amount of water supply. The passage is provided with an electric hot water supply valve for adjusting the amount of hot water supply, and an electromagnetic valve for starting and stopping the supply of water, hot water or mixed water is provided in the water discharge passage or in the water supply passage and the hot water supply passage. Each is provided on the downstream side of the electric water supply valve and the electric hot water supply valve. After the water supply amount is reduced by the electric water supply valve and the hot water supply amount is reduced by the electric water supply valve, the water supplied by the electromagnetic valve is reduced. Control means to stop the supply of hot water or mixed water It is characterized in that is.

  In this faucet device, the control means includes a setting unit for setting the flow rate or temperature of the mixed water mixed with hot water, and the control means is configured to respond to the flow rate or temperature of the mixed water set by the setting unit. It is preferable to adjust the amount of water supplied by the electric water supply valve and adjust the amount of hot water supplied by the electric water heater.

  According to the water faucet device of the present invention, the problem of cost and installation location can be solved and water hammer can be suppressed.

It is a lineblock diagram showing roughly a 1st embodiment of a faucet device of the present invention. It is the principal part perspective view which showed one form of the electric water supply valve and the electric hot water supply valve provided in the water faucet device shown in FIG. In the faucet device shown in FIG. 1, it is the graph which showed the water pressure change in the water supply path and hot water supply path with the reduction of the water supply amount by an electric water supply valve, and the reduction of the hot water supply amount by an electric hot water supply valve. In the faucet device shown in FIG. 1, the water discharge path when the supply of water, hot water or mixed water is stopped by the electromagnetic valve after the reduction of the amount of water supplied by the electric water supply valve and the reduction of the amount of hot water supplied by the electric water heater It is the graph which showed the inside water pressure change roughly. It is the block diagram which showed schematically 2nd Embodiment of the faucet device of this invention.

    FIG. 1 is a configuration diagram schematically showing a first embodiment of the faucet device of the present invention.

  The faucet device 1 includes a water supply path 2 that supplies water, a hot water supply path 3 that supplies hot water, and a water discharge path 4 that communicates with the water supply path 2 and the hot water supply path 3. The water supply path 2 and the hot water supply path 3 are connected at their downstream ends and are connected to the upstream end of the water discharge path 4. The water discharge channel 4 is located downstream of the water supply channel 2 and the hot water supply channel 3. For this reason, the water supplied from the water supply channel 2, the hot water supplied from the hot water supply channel 3, or the mixed water mixed with the hot water flows through the water discharge channel 4. Only water flows through the water discharge channel 4 when hot water is not supplied from the hot water supply channel 3, and only hot water flows when water is not supplied from the water supply channel 2. When water and hot water are supplied from each of the water supply channel 2 and the hot water supply channel 3, the mixed water mixed with the hot water flows through the water discharge channel 4. Such a water discharge channel 4 has a water discharge port 5 at the downstream end, and the water discharge port 5 is open to the atmosphere. The water supply channel 2, the hot water supply channel 3, and the water discharge channel 4 are all formed by piping.

  Further, in the faucet device 1, an electric water supply valve 6 that adjusts the amount of water supply is provided in the water supply path 2, and an electric water heater 7 that adjusts the amount of hot water supply is provided in the hot water supply path 3. The water discharge path 4 is provided with an electromagnetic valve 8 for starting and stopping the supply of water, hot water or mixed water.

  FIG. 2 is a perspective view of a main part showing one embodiment of an electric water supply valve and an electric hot water supply valve provided in the faucet device shown in FIG. 1.

  The electric water supply valve 6 and the electric hot water supply valve 7 include an outer cylinder 10 having a connection port 9 connected to the water supply path 2 or the hot water supply path 3, and an inner cylinder 11 provided rotatably inside the outer cylinder 10. And. Both the outer cylinder 10 and the inner cylinder 11 are bottomed cylindrical members, and openings 12 and 13 are formed in the side portions thereof. A rotating shaft 14 that protrudes outward from the bottom of the outer cylinder 10 is provided at the bottom of the inner cylinder 11, and the rotating shaft 14 is connected to the rotation axis of the motor via a speed reduction mechanism or the like. In order to allow the rotating shaft 14 to protrude, a through-hole through which the rotating shaft 14 can be passed is formed at the bottom of the outer cylinder 10. The rotating shaft 14 protrudes outward from the bottom of the outer cylinder 10 through the through hole.

  When electric power is supplied to the motor, the rotational force of the motor is transmitted to the rotating shaft 14, the rotating shaft 14 rotates, and the inner cylinder 11 rotates inside the outer cylinder 10. As the inner cylinder 11 rotates, the area where the opening 13 formed in the side surface portion of the inner cylinder 11 overlaps the opening 12 formed in the side surface portion of the outer cylinder 10 changes. When the overlapping area of the openings 12 and 13 is large, the outer cylinder 10 and the inner cylinder 11 flow in order through the connection port 9 and the flow rate of water or hot water flowing out of the opening 13 increases. Conversely, when the overlapping area of the openings 12 and 13 is small, the flow rate of water or hot water flowing out from the opening 13 decreases. In this way, the electric water supply valve 6 and the electric hot water supply valve 7 adjust the water supply amount or the hot water supply amount.

  Note that the downstream side of the opening 13 of the inner cylinder 11 is connected to the water supply path 2 or the hot water supply path 3, and this connection portion is located downstream of the connection port 9 of the outer cylinder 10. In addition, the size of the opening 13 of the inner cylinder 11 is not necessarily smaller than the opening 12 of the outer cylinder 10, and can be the same size as the opening 12. In addition, the openings 13 can be formed with different sizes at intervals in the side surface of the inner cylinder 11. In this case, the inner cylinder 11 can be rotated so as to change the opening 13 that matches the opening 12 of the outer cylinder 10, and the amount of water supply and the amount of hot water can be adjusted.

  On the other hand, in the faucet device 1 shown in FIG. 1, the solenoid valve 8 does not adjust the amount of water, hot water, or mixed water, but opens and closes by turning on / off the power, and water, hot water, or mixed water. Only start and stop the supply.

  Further, the faucet device 1 is provided with a control means 15 for controlling the operation of the electric water supply valve 6, the electric hot water supply valve 7 and the electromagnetic valve 8. The control means 15 is electrically connected to the electric water supply valve 6, the electric hot water supply valve 7 and the electromagnetic valve 8.

  The control means 15 includes a setting unit 16 that sets the flow rate or temperature of the mixed water mixed with hot water flowing through the water discharge path 4. The setting of the flow rate or temperature of the mixed water can be directly input by the user of the faucet device 1 at the setting unit 16. In accordance with the flow rate or temperature of the mixed water set by the setting unit 16, the control means 15 adjusts the amount of hot water supplied by the electric water supply valve 6 and the amount of hot water supplied by the electric hot water supply valve 7. In the electric water supply valve 6 and the electric hot water supply valve 7, the area where the openings 12 and 13 of the outer cylinder 10 and the inner cylinder 11 overlap with each other so as to meet the flow rate or temperature of the mixed water set by the setting unit 16 is the inner cylinder. 11 is changed. As a result, the flow rate ratio between water and hot water flowing through the water discharge channel 4 is adjusted, and the faucet device 1 can discharge mixed water having a desired flow rate or temperature from the water discharge port 5.

  Further, when stopping the water discharge of the faucet device 1, the control means 15 first reduces the amount of water supplied by the electric water supply valve 6 and the amount of hot water supplied by the electric water heater 7, and then the electromagnetic valve Stop supply of water, hot water or mixed water according to No. 8. That is, when the water discharge stop is input to the control means 15, the control means 15 rotates the inner cylinder 11 in the electric water supply valve 6 and the electric hot water supply valve 7 shown in FIG. The overlapping area is reduced to reduce the amount of water supply and the amount of hot water supply.

  In addition, the input of the water discharge stop to the control means 15 can be made into the direct input by the user via the ON / OFF switch of water discharge, the automatic input from a human sensor, etc., for example.

  FIG. 3 is a graph showing changes in the water pressure in the water supply channel and the hot water supply channel in accordance with the reduction in the amount of water supplied by the electric water supply valve and the decrease in the amount of hot water supplied by the electric water supply valve in the faucet device shown in FIG. .

Prior to stopping the supply of water, hot water, or mixed water by the electromagnetic valve 8 shown in FIG. 1, the water supply amount is reduced by the electric water supply valve 6 and the hot water supply amount is reduced by the electric hot water supply valve 7. The water pressure change as shown in FIG. 3 occurs in the water supply channel 2 and the hot water supply channel 3. Pressure change shown in FIG. 3, when formed into a 42mm ² at the maximum area of opening 12 and 13 overlap the outer cylinder 10 and inner cylinder 11 in the electric water valve 6 and the electric hot water supply valve 7 shown in FIG. 2 The relationship between the pressure increase value in the water supply channel 2 and the hot water supply channel 3 and the opening area ratio is shown.

As shown in FIG. 3, as the area where the openings 12 and 13 overlap becomes smaller, the pressure increase value gradually decreases. When the opening area ratio reaches about 25% (area is 10.5 mm ² ), the pressure increase value is 7 When the electric water supply valve 6 and the electric hot water supply valve 7 are closed, the pressure increase value becomes 0 MPa.

  As described above, in a state where the pressure increase values of the water supply passage 2 and the hot water supply passage 3 are decreased, the water pressure of the water discharge passage 4 that accompanies the closing of the electromagnetic valve 8 even if the water supply is stopped by the electromagnetic valve 8 shown in FIG. Can be kept low.

  FIG. 4 shows the water faucet device shown in FIG. 1, after the water supply amount is reduced by the electric water supply valve and the hot water amount is reduced by the electric hot water supply valve, the supply of water, hot water or mixed water is stopped by the electromagnetic valve. It is the graph which showed roughly the water pressure change in the water discharge channel at the time.

  A water pressure sensor that measures the water pressure in the water discharge channel 4 is arranged on the upstream side of the electromagnetic valve 8 in the water discharge channel 4 to measure a change in water pressure. As shown in FIG. 4, prior to stopping the supply of water, hot water or mixed water by the electromagnetic valve 8, when the water supply amount is reduced by the electric water supply valve 6 and the hot water supply amount is reduced by the electric hot water supply valve 7. The flow rate and pressure of water, hot water or mixed water flowing through the electromagnetic valve 8 are reduced, and the pressure increase value can be suppressed to such an extent that no water hammer is generated.

  In the faucet device 1 shown in FIG. 1, the electric water supply valve 6 and the electric water heater valve are controlled by the operation control of the electric water supply valve 6, the electric water heater 7 and the electromagnetic valve 8 as described above. The pressure loss of 7 itself can be increased, and the flow rate of water, hot water or mixed water flowing through the solenoid valve 8 can be reduced. For this reason, the energy generated when the electromagnetic valve 8 is in the closed state can be reduced, and the water hammer can be suppressed.

  The water faucet device 1 can realize water hammer suppression without installing a water hammer preventer such as releasing pressure in the primary flow path or closing the electromagnetic valve 8 step by step. Therefore, the faucet device 1 can solve the problems such as the cost increase associated with the installation of the water hammer preventer and the need to secure a place for installing the water hammer preventer.

  The control means 15 can include a microcomputer programmed in advance so as to control the operation of the electric water supply valve 6, the electric hot water supply valve 7 and the electromagnetic valve 8.

  FIG. 5 is a configuration diagram schematically showing a second embodiment of the faucet device of the present invention.

  In the second embodiment, portions common to the first embodiment are denoted by the same reference numerals in FIG. 5, and description thereof is omitted below.

  In the water faucet device 17, the electromagnetic valve 8 is not provided in the water discharge path 4, but is provided in each of the water supply path 2 and the hot water supply path 3, and the electromagnetic valve 8 includes the electric water supply valve 6 and the electric water supply hot water supply. It is arranged downstream of the valve 7. Any electromagnetic valve 8 is electrically connected to the control means 15.

  On the other hand, also in the faucet device 17, when stopping the water discharge of the faucet device 17, the control means 15 first reduces the amount of water supplied by the electric water supply valve 6 and the amount of hot water supplied by the electric water heater 7. After that, the supply of water, hot water or mixed water by the electromagnetic valve 8 is stopped.

  Accordingly, the water faucet device 17 is electrically driven by the operation control of the electric water supply valve 6, the electric hot water supply valve 7 and the electromagnetic valve 8 as described above of the control means 15, similarly to the water faucet device 1 of the first embodiment. The pressure loss of the water supply valve 6 and the electric hot water supply valve 7 itself can be increased, and the flow rate of water, hot water or mixed water flowing through the electromagnetic valve 8 can be reduced. For this reason, the energy generated when the electromagnetic valve 8 is in the closed state can be reduced, and the water hammer can be suppressed.

  The present invention is not limited to the above embodiments. Various modes are possible for the details of the configuration and structure of the electric water supply valve, the electric hot water supply valve, and the electromagnetic valve. Various configurations and structures can be adopted for the control means.

DESCRIPTION OF SYMBOLS 1, 17 Water faucet device 2 Water supply path 3 Hot water supply path 4 Water discharge path 6 Electric water supply valve 7 Electric water supply valve 8 Electromagnetic valve 15 Control means 16 Setting part

Claims (2)

A water supply channel that supplies water, a hot water supply channel that supplies hot water, a water supply channel and a hot water supply channel, water supplied from the water supply channel, hot water supplied from the hot water supply channel, or mixed water mixed with hot water In a faucet device provided with a water discharge channel that circulates,
The water supply passage is provided with an electric water supply valve for adjusting the amount of water supply, and the water supply passage is provided with an electric water supply valve for adjusting the amount of hot water supply, so that supply of water, hot water or mixed water is started. And a solenoid valve for stopping is provided in the water discharge channel, or provided in each of the water supply channel and the hot water supply channel, and disposed on the downstream side of the electric water supply valve and the electric water supply valve,
Control means is provided for stopping the supply of water, hot water or mixed water by an electromagnetic valve after reducing the amount of water supplied by the electric water supply valve and reducing the amount of hot water supplied by the electric water heater. A faucet device characterized by.   The control means includes a setting unit that sets the flow rate or temperature of the mixed water mixed with hot water, and the control means is an electric water supply valve according to the flow rate or temperature of the mixed water set by the setting unit. The faucet device according to claim 1, wherein the water supply amount is adjusted and the hot water supply amount is adjusted by an electric hot water supply valve.

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