JPH07122834B2 - Hot water mixing device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixing apparatus for hot water supply, which mixes hot water and water to obtain an appropriate temperature and controls the supply amount of the mixed hot water.

2. Description of the Related Art Conventionally, as a device related to this kind of hot and cold water mixing device,
There was something like that shown in the figure. (For example, Jitsuko Sho 61-2438
The water supplied from the water supply passage 1 is supplied to the water supply target via the electromagnetic valve 2. In the middle of the water supply passage 1, there is provided a flow rate detecting means 3 which detects a water flow rate and outputs a flow rate signal corresponding to the water flow rate. When the desired flow rate integrated value is set by the setter 4 and water supply is started, the flow rate detected by the flow rate detecting means 3 is added up by the controller 5 and reaches the flow rate integrated value set by the setter 4. The solenoid valve 2 is closed and a predetermined amount of water is poured into the bathtub. Electricity used for controlling these is supplied from a power source 6.

Problems to be Solved by the Invention However, the above-described configuration has the following problems.

(1) Since only water can be supplied, it is necessary to boil to a proper temperature in a bath kettle, which is inconvenient and time consuming.

(2) In case of a power failure, water supply will be stopped if it is a solenoid valve that is closed when not energized, but there is a risk that water will continue to flow out in the solenoid valve that is opened when not energized. .

(3) Since it is a solenoid valve, it could be opened and closed, but the flow rate could not be adjusted arbitrarily.

(4) In areas with high water pressure, water hammer occurred when the solenoid valve was closed.

For the purpose of eliminating the water hammer of this solenoid valve, there was a so-called pilot type solenoid valve that connected the valve to the diaphragm and controlled the water flowing through the pores, but the pores clogged with scale components in the water and operated. It had the drawback of disappearing. A motor-operated valve using a motor has been considered as a means for solving the problems in terms of arbitrary flow rate controllability of the solenoid valve, water hammer, and reliability, but the drawback of not operating at the time of power failure still remains.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a hot and cold water mixing apparatus that can be reliably controlled in the event of a power failure.

Means for Solving Problems The hot and cold water mixing apparatus of the present invention in order to solve the above problems,
A hot water side valve for adjusting the amount of hot water, a water side valve for adjusting the amount of water, a hot water side driving means for electrically driving these, a water side driving means, and a mixed hot water temperature detector for detecting a mixed hot water temperature, Mixer temperature and at least a setter that sets the start and stop of the supply of the mixed hot water, a power supply, an auxiliary power supply that supplies electricity instead of a power failure of the power supply, and controls the hot water side driving means and the water side driving means for mixing. In addition to adjusting the hot water temperature, starting and stopping the supply of the mixed hot water, stopping the supply of the mixed hot water during a power failure, and controlling the hot water side drive means to close the hot water valve earlier than the hot water valve It is equipped with a controller to perform.

Effect The present invention has the above-described configuration to obtain the mixed hot water temperature set by the setting device by adjusting the mixing ratio of hot water and water with the hot water valve and the hot water valve, and also by opening and closing the hot water valve and the hot water valve. Starts and stops the supply of mixed hot water and stops the supply of mixed hot water at the time of power failure, and at the time of power failure, the hot water side driving means closes the hot water side valve earlier than the water side valve, and the capacity of the auxiliary power supply is not sufficient at the time of power failure. In this case, the hot water valve cannot be closed and the hot water is prevented from continuing to flow, and the supply of high-temperature hot water at the time of closing is prevented.

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

Hot water and water supplied through the hot water flow path 7 and the water flow path 8 are equalized in hot water pressure and water pressure by a pressure balance valve 10 provided in the valve frame body 9, and flow into the mixed water stop valve portion 11 . . The mixed water stop valve 11 includes a hot water side motor 16 and a water side motor, which are electric driving means provided outside the hot water side valve body 12 and the water side valve body 13 via shafts 14 and 15, respectively.
Driven by 17. The hot water and the water adjusted by the hot water valve body 12 and the hot water valve body 13 join and are mixed, and are supplied to the hot water supply target from the faucet 19 through the mixed hot water flow path 18. The mixed hot water temperature is detected by the mixed hot water temperature detector 20, and a setting device 21 provided near the faucet 19
The hot water side motor 16 and the hot water side motor 17 are controlled by the controller 22 so as to compare the mixed hot water temperature set in step 2 with the controller 22. In addition to this, the setting device 21 is configured to start and stop the supply of the mixed hot water and set the flow rate and the integrated flow rate of the mixed hot water. To start and stop the supply of the mixed hot water, the hot water valve body 12
And the water side valve body 13 is opened and closed. Also,
For the flow rate adjustment, the flow rate setting of the mixed hot water of the setter 21 and the signal of the flow rate sensor 23 are compared by the controller 22, and the opening degree of the hot water side valve body 12 and the water side valve body 13 is adjusted so that the set flow rate is obtained. Adjusted. In case 24, in addition to controller 22 and setting device 21, a condenser
25 is included, and power is supplied from the condenser to the hot water side motor 16, the water side motor 17 and the like via the controller 22 when the power supply 26 fails. The condenser 25 is heated by radiating heat from the hot water passage 7 and the mixed water shutoff valve 11 to improve its capacity.

In the above-mentioned configuration, when the setting hot water temperature, mixing flow rate, etc. are set by the setting device 21 and the start of the hot water mixing is instructed, the controller 22
The hot water side motor 16 and the water side motor 17 are driven via the open water, the hot water side valve 12 and the water side valve 13 are opened, and the hot water and the water are mixed.

The mixed hot water temperature is detected by the mixed hot water temperature detector 20, and the hot water side valve body 12 and the water side valve body 13 are adjusted to a ratio at which the set temperature is obtained. Similarly, the opening degree of the hot water valve body 12 and the water side valve body 13 is adjusted by using the signal of the flow rate sensor 23 to the valve opening degree at which the set flow rate is obtained.
When the supply of the mixed hot water is no longer necessary, when the setting device 21 is instructed to stop, the hot water valve body 12 and the water side valve body 13 are closed, and the supply of the mixed hot water is stopped. If a power failure occurs during the supply of the mixed hot water, the electricity stored in the condenser 25 is released, and the controller 22 controls the hot side valve body 12 and the water side valve body 13 to be closed. At this time, in order to prevent high temperature hot water from being supplied when the supply is stopped and to improve safety, and in the unlikely event that the amount of electricity stored in the condenser is not sufficient, the hot water valve body 12 is closed early and the water side is closed. Controller 22 to close valve body 13 with a delay
Controls. Closing is performed at a speed that does not cause water hammer during both normal and power outages. When the power failure is restored, power is supplied from the power supply 26, and electricity is immediately stored in the capacitor. In particular, the control to stop the supply of mixed hot water in this way at the time of a power failure prevents the flow rate from being integrated and overflowing due to a power failure when the hot water is poured into the bathtub by specifying the flow rate integrated value with the setter. It is effective to do A battery may be used instead of the capacitor 25. When a battery is used, it is possible to continue the control without stopping the supply of the mixed hot water.

According to the configuration of the present embodiment as described above, the controller 22 closes the hot water valve body 12 and the water water valve body 13 at the time of power failure, and performs control to stop the supply of the mixed hot water. A certain condenser 25 has the effect of requiring a smaller capacity than when the control is continued because it is sufficient to store the electricity required for closing the valve. Moreover, since the auxiliary power source is the capacitor 25, it does not need to be replaced as compared with the case where a battery is used, and the circuit can be simplified and provided at a low cost.

Effects of the Invention According to the hot and cold water mixing apparatus of the present invention as described above, the following effects can be obtained.

(1) Since the mixed hot water temperature can be adjusted with the hot water valve and the hot water valve,
Hot water to be used for hot water supply can be immediately obtained, and when it is supplied to the bathtub, it is not necessary to boil it in the bath kettle, and time can be saved.

(2) The hot water valve and the hot water valve adjust the temperature of the hot water mixture at normal times and start / stop the supply of hot water, and stop the hot water supply valve and the hot water valve to stop the hot water supply. Therefore, it is not necessary to provide a special valve for emergency shutoff, and the hot water valve and the hot water valve can be used both for supplying and stopping the mixed hot water in an emergency.

(3) Since the hot water side driving means controls the hot water side valve to close earlier than the water side valve at the time of power failure, the hot water side valve cannot be closed when the capacity of the auxiliary power supply is not sufficient at the time of power failure. The hot water can be prevented from continuing to flow, energy can be saved, and high-temperature hot water can be prevented from being supplied at the time of closing, resulting in safety.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view of a hot and cold water mixing apparatus according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a conventional water supply apparatus. 12 …… Hot water valve body (hot water valve), 13 …… Water side valve body (water side valve), 16 …… Hot water motor (hot water drive means), 17 …… Water side motor (water side drive means) ), 20 …… Mixed water temperature detector, 21…
… Setting device, 22 …… Control device, 25 …… Capacitor (auxiliary power supply), 26 …… Power supply.

Claims (1)

[Claims] 1. A hot water side valve for adjusting the flow rate of hot water, a hot water side driving means for electrically driving the hot water side valve, a water side valve for adjusting the flow rate of water, and an electrically operated water side valve. A water side driving means, a mixed hot water temperature detector for detecting a mixed hot water temperature in which hot water and water are mixed, a setter for setting supply / stop of the mixed hot water and at least the mixed hot water, and a power supply, An auxiliary power supply for supplying electricity instead of this power failure, and the hot water side driving means and the water side driving means are controlled according to the setting of the setting device and the signal of the mixed hot water temperature detector to adjust the mixed hot water temperature and the mixed hot water. In addition to starting and stopping the supply of the hot water, the controller stops the supply of the mixed hot water at the time of a power failure, and controls the hot water side drive means to close the hot water side valve earlier than the water side valve. A hot and cold water mixing device equipped.