JP2532382B2 - Hot water mixing device - Google Patents

Description

Description: TECHNICAL FIELD 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 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 is one shown in FIG. 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,
The bath is filled with a predetermined amount of water. 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 it in a bath kettle to an appropriate temperature, which is inconvenient and time consuming.

(2) In the event of a power failure, the solenoid valve 2 is closed and water supply stops, so the desired function could not be achieved.

The present invention is to solve the above conventional problems,
It is an object of the present invention to provide a hot and cold water mixing device which can achieve safety and energy saving even if there is a power outage.

Means for Solving the Problems In order to solve the above problems, the hot and cold water mixing apparatus of the present invention includes a mixing valve for adjusting a mixing ratio of hot water and water, a temperature detector for detecting a mixed hot water temperature, and a mixing flow rate. A flow rate control valve for adjusting the flow rate, an electric drive means for driving the flow rate control valve, a setting device for instructing the start of hot water supply and setting the mixed hot water temperature, and a power supply
An auxiliary power supply that supplies electricity instead of this power failure, control that opens the flow control valve according to the instructions of the setting device, and adjusts the mixing valve by comparing the mixed hot water temperature set value of the setting device and the signal of the temperature detector. Control, when the temperature of the mixed hot water is abnormal, control to close the flow control valve by using a signal from a temperature detector, and control to change hot water supplied from the mixed valve to water when the flow control valve fails It is equipped with a vessel.

Effect of the Invention With the above-described structure, the present invention adjusts the mixing ratio with the mixing valve to supply the hot water to the hot water supply target, and the flow control valve adjusts the flow rate of the hot water and starts / stops the supply of the hot water. Power is supplied from the mixing valve to continue hot water supply, and if the temperature of the mixed hot water is abnormal, the signal from the temperature detector is used to close the flow control valve. It controls to change to water.

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

The hot water and water supplied through the hot water flow path 7 and the water flow path 8 are flown into the mixing valve 11 after the hot water pressure and the water pressure are made uniform by the pressure balance valve 10 provided in the valve frame 9. The mixing valve 11 is configured such that the hot water side valve body 12 and the water side valve body 13 interlock with the operation of the shaft 14 to change the mixing ratio of hot water and water in inverse proportion. The shaft 14 is driven via a linear motion conversion mechanism 16 by a mixing valve motor 15 which is an electric drive means provided outside. The temperature of the mixed hot water is detected by the thermistor 17, the flow rate sensor 18 for detecting the flow rate of the mixed hot water, the flow rate control valve 19, the mixed hot water flow path 20, and is supplied from the faucet 21 to the hot water supply target. It The flow control valve 27 is also driven by the flow control valve motor 22. In the vicinity of the faucet 21, a setting device 23 for setting the mixed hot water temperature, the mixed flow rate, the integrated value of the mixed flow rate, and the like is provided. The mixing valve motor 15 and the flow rate control valve motor 22 are controlled via the mixing / flow rate controller 24 so that various values set by the setting device 23 can be obtained. By the way, the case 25 houses a battery 26 which is an auxiliary power source and a switching controller 27, and when the power source 28 fails, the switching controller 27 works to switch the power source of the electricity to the battery 26 and the mixing controller 24. Electricity is supplied to the mixing valve motor 15, the flow control valve motor 22, and the like. Reference numeral 29 is a telephone which is a remote setting device for instructing control from the outside. The battery 26
Is kept warm by the heat radiated from the mixing section of the mixing valve 11 and the hot water passage, so that the deterioration of the capacity during cold is prevented.

In the above configuration, when the set hot water temperature, the mixed flow rate, etc. are set by the setting device 23 and the start of hot water supply is instructed, the flow control valve 19 is controlled by the flow control valve motor 22 via the mixing / flow control device 24.
Is started, the flow of hot water and water is started, and the mixing valve 11 starts adjusting the mixing ratio of hot water and water. The adjustment of the mixing ratio is the set value of the mixed hot water temperature in the setting device 23,
The mixed hot water temperature detected by the thermistor 17 is compared by the mixing / flow rate controller 24, and the mixing valve 11 is operated by the mixing valve motor 15 so as to obtain an appropriate temperature.

Further, the flow rate control valve 19 uses the signal from the flow rate sensor 18 so that the flow rate control valve motor 22 is controlled by the signal from the flow rate sensor 18 so that the flow rate control valve motor 22 is controlled by the setter 23 so as to adjust the flow rate. . Electricity is supplied from a power supply 28 to the mixing valve motor 15, the mixing / flow rate controller 24, and the like. When the power supply from the power supply 28 is stopped at the time of power failure, the switching controller 27 works to switch the power supply source to the battery 26 side, and the mixing hot water temperature in the mixing valve 11 and the flow rate in the flow control valve 19 cannot be adjusted. It will proceed as usual. Therefore, for example, even if there is a power failure in the state where the integrated flow rate value is specified with the setting device 23 and hot water is being poured into the bathtub, the hot water supply does not stop as in the past, and the normal state There is no danger because hot water supply can be continued.
As the mixing hot water temperature, the mixing ratio of the hot water and the water can be arbitrarily changed by the mixing valve 11, so that when the hot water is poured into the bathtub, it is possible to obtain the temperature at which the hot water can be taken immediately when the hot water supply is finished. Also, by issuing a command using the telephone 29 when going out, it is possible to start integrated hot water supply and set the mixed hot water temperature, and when returning home, a so-called telecommand of a predetermined amount of hot water is filled in the bathtub. It can also function. When the mixing valve 11 fails, the thermistor 17 detects an abnormality and the flow control valve 19 stops hot water supply to prevent hot water having a temperature different from the set value from being supplied. On the contrary, when the flow rate control valve 19 is out of order, the mixing valve 11 changes the supplied hot water into water, thereby preventing wasteful energy release, and mutual complementary control can be performed.

In the present embodiment, since the mixing valve 11 is an electric mixing valve driven and controlled by the mixing valve motor 15, the operation of the mixed hot water can be easily performed by the setting device 23, and the operation force can be small. When the flow control valve 19 fails, complicated control such as changing the mixed hot water to water to save energy becomes possible. Also,
Since the start and mixed hot water temperature can be set by telephone 29, it has the effect of greatly increasing convenience.

In the above embodiment, the battery is used as the auxiliary power source at the time of power failure, but the auxiliary power source may be a large-capacity capacitor instead of the battery. In this case, no switching controller is particularly necessary.

Advantages of the Invention (1) Even if there is a power failure, the power supply from the auxiliary power supply
The mixing ratio of the hot water and the hot water can be adjusted by the mixing valve, and the hot water can be continuously supplied by the flow control valve.

(2) When the temperature of the mixed hot water is abnormal, the signal from the temperature detector is used to close the flow control valve to ensure safety, and when the flow control valve fails, the supply amount from the mixing valve is changed to water. Can prevent wasted energy consumption,
Moreover, safety and energy conservation can be maintained even in the event of a power failure.

[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. 11 …… Mixing valve, 17 …… Thermistor (temperature detector), 19…
… Flow control valve, 22 …… Flow control valve motor (electric drive means), 23 …… Setting device, 24 …… Mixing / flow controller (controller), 26 …… Battery (auxiliary power supply), 28 …… Power supply.

Continuation of the front page (56) References JP-A-60-228827 (JP, A) JP-A-60-134152 (JP, A) JP-A-59-170579 (JP, A) JP-B-53-15217 (JP , B2)

Claims (1)

(57) [Claims] 1. A mixing valve for adjusting a mixing ratio of hot water and water, a temperature detector for detecting a mixed hot water temperature, a flow rate control valve for adjusting a mixing flow rate, and an electric drive means for driving the flow rate control valve. And a setting device for setting the hot water supply start instruction and the mixed hot water temperature,
A power supply, an auxiliary power supply that supplies electricity instead of a power failure of this power supply, a control for opening the flow control valve according to an instruction from the setting device, a mixed hot water temperature set value of the setting device, and a signal of the temperature detector. By comparison, control for adjusting the mixing valve, control for closing the flow control valve using the signal from the temperature detector when the temperature of the mixing hot water is abnormal, and supply from the mixing valve when the flow control valve fails A hot and cold water mixing device equipped with a controller that controls the conversion of hot water into water.