JPH0419398Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device that automatically supplies hot water at a predetermined temperature and in a predetermined amount to bathtubs at a plurality of locations.

(Prior art and its problems) Conventional fixed-temperature water heaters lead the hot water heated by the water heater and the water from the tap via hot water pipes and water supply pipes to the hot water supply location, where they are connected to valve mixers and thermostats. It was used by mixing with a mixer tap.

However, in order to supply hot water at a constant temperature using the valve mixer faucet, both the hot water supply faucet and the faucet must be operated manually, and in the case of a thermostatic mixer faucet, manual operation of the valve is required as well. Additionally, checking the hot water level after operation must be done by feeling it with your hands or by using a thermometer, which takes a lot of effort, and when supplying hot water to multiple bathtubs, checking must be done for each bathtub. It was a very troublesome thing to do.

In order to solve these problems, a method that can be considered is to attach a temperature control function to the water heater, boil the water to a set temperature, and then use the hot water. Its use is limited because it is difficult to supply hot water at different temperatures to each water heater, and the amount of water used is also limited by the pressure loss of the water heater.

On the other hand, there is a method of stopping the water supply from the water heater when the bath water in the bathtub reaches a predetermined level. There is a system that communicates with the water surface and detects the water surface level.

However, this is not a problem when water is being supplied normally to the bathtub, but if an abnormality occurs in the water supply, for example if water is supplied with the lid closed, water is not supplied to the bathtub and the level may drop. There were concerns that the switch would not work and water would be wasted for a long time.

In order to solve the problem of the presence or absence of a lid as described above, a method was adopted in which the bathtub was equipped with a hopper to prevent sewage from flowing back, a hot water supply port was installed on the side of the bathtub to supply hot water, and the amount of hot water supplied was checked using a level switch. .

However, this method also has the disadvantage that the bathtub, water heater, and hopper must be installed at the same level to prevent the backflow of sewage, which limits the installation locations for the water heater and bathtub.

(Problem to be Solved by the Invention) The problem to be solved by the invention is to individually supply hot water at a constant temperature and a fixed amount to multiple bathtubs by simple remote control.

(Means for solving the problem) A means for solving the above problem is to connect a hot water supply pipe connected to a hot water supply source and a water supply pipe connected to a water supply source, and to operate electrically to connect these pipes. a mixing function unit that mixes hot water and water from the street at a predetermined ratio; a water spout fitting located above the bathtub and connected to the secondary side of the mixing function unit via a mixing pipe; and the water spout metal fitting. The water heater is equipped with a water level sensor that detects the water level in the bathtub, and the mixing function section and the water level sensor are electrically connected to the controller to form a water heater, and multiple systems of this water heater are installed. .

(Function) A desired temperature is set with each controller, the set temperature signal is notified to the mixing function section, and hot water and water from the hot water supply pipe and the water supply pipe are mixed at a predetermined ratio based on the temperature, Hot water at a temperature set for each bathtub is supplied into the bathtub.

Furthermore, when hot water at the set temperature is supplied to each bathtub, the water surface level sensor installed in each water spout metal fitting detects the amount and sends a detection signal to the controller, and the signal from the controller is sent to the mixing function section. Hot water supply stops.

(Example) An embodiment of the present invention will be described based on the drawings.

In the embodiment of the present invention, an automatic temperature constant and metered water supply device A is provided between the water heater M and each bathroom.

The automatic constant temperature, metered water supply device A is composed of a mixing function section 1, a water discharge fitting 2, a water surface level sensor 3, and a controller 4.

As shown in FIG. 1, the mixing function section 1 has one end connected to the water heater M, a hot water flow valve 5 to the hot water supply pipe a whose secondary side is connected to the mixing pipe c, and one end connected to the water supply N. A water flow valve 6 is connected to the water supply pipe b whose secondary side is connected to the mixing pipe c, and a mixing pipe whose secondary side is connected to the water supply pipe a and the water supply pipe b, and the secondary side is connected to the water discharge fitting 2. A thermistor 7 is provided at c, and the water flow valve 5, water flow valve 6, thermistor 7, and a controller 4 for arbitrarily setting the temperature of the mixed water are electrically connected to each other, and the signal from the thermistor 7 and the controller 4 are connected electrically. It is comprised of a control device 8 that electrically operates the water flow valve 5 and the water flow valve 6 based on signals.

For example, if the set temperature signal from the controller 4 is X and the hot water temperature signal from the thermistor 7 is Y, if Y is lower than X, the control device 8 will open the hot water flow valve 5 and close the water flow valve 6. On the contrary, if Y is higher than X, the water flow valve 5 is closed and the water flow valve 6 is opened to adjust the temperature of the mixed water to always be the set temperature.

Further, the water discharging fitting 2 is connected to the hot water supply pipe a and the water supply pipe b via the mixing pipe c, and is provided above the bathtub 11, and a water surface level sensor 3 is provided on the lower surface.

The water surface level sensor 3 is an ultrasonic sensor, electrically communicates with the controller 4, and is connected to the bathtub 11.
When a certain amount of hot water is supplied to the inside, it is detected and notified to the controller 4, and the controller 4
The signal is sent to the control device 8 to adjust the amount of water in the bathtub.

The controller 4 is used to arbitrarily set the temperature and amount of hot water, is electrically connected to the control device 8, notifies the control device 8 of signals of the set temperature and amount, and is installed outside the bathroom.

Thus, the automatic constant-temperature, constant-quantity water supply device A configured in this manner has multiple systems provided by branching the hot water supply pipe a and the water supply pipe b, and each bathtub 11 installed in a plurality of bathrooms, 11... and each bathtub 11, 11... has a different constant temperature, respectively.
A fixed amount of hot water can be supplied by setting the controllers 4, 4, . . .

FIG. 2 shows an embodiment in which a thermostatic mixing valve 9 is used in the mixing function section 1. This thing has the secondary side of the hot water supply pipe a connected to the water heater M as the hot water flow path, the secondary side of the water supply pipe b connected to the water supply source N as the water flow path, and one end of the water supply pipe 2 as the water flow path.
a thermostatic mixing valve 9 connected to the mixing flow path and the other end connected to the mixing flow path, and an electric drive unit 1 that electrically drives the mixing valve 9.
0, and a thermistor 7 provided in the mixing pipe c to sense the temperature of the hot water in the pipe c, and an electric drive unit 10 of the mixing valve 9, the thermistor 7, and optionally a thermistor 7 that detects the temperature of the hot water. The electric drive unit 10 is electrically connected to the controller 4 that sets the
Activate the thermostatic mixing valve 9.
and a control device 8 that automatically operates the on-off valve.

The thermostatic mixing valve 9 is connected to an electric drive unit 10 at the upper end of the valve body to automatically open and close the on-off valve. Therefore, the control device 8 operates the electric drive unit 10 based on the set temperature signal from the controller 4, and mixes hot water and water at a predetermined ratio by operating the on-off valve of the mixing valve 9.
Provides hot water at the set temperature.

The thermistor 7 provided in the mixing pipe c detects the water temperature in the pipe c and sends the water temperature signal to the control device 8.
The system constantly adjusts the water temperature in response to temperature changes.

Furthermore, since a temperature sensing element containing a wax element that expands and contracts due to heat is installed in the mixing flow path, the thermistor 7 and the control device 8 can adjust the hot water supply pressure and the water temperature in response to fluctuations in the water supply pressure. You can do it without relying on it.

Automatic constant temperature, metered water supply device A configured as above
In addition to providing the controllers 4, 4, . , 11... can be performed in a concentrated manner.

(Effects of the invention) Since the invention has the above configuration, it has the following effects.

By installing fixed-temperature, constant-quantity water heaters in several hot water supply locations, each location can be heated at different fixed temperatures and fixed quantities by remote control of the controller.
Simultaneous setting of both quantitative values is easily possible.

Regardless of the type of hot water supply, it is possible to supply hot water at a fixed temperature and at a constant rate by simple remote control using a controller.

Since there is no need for a complicated mixing faucet at the end, the shape of the spouting fitting is simple, and there is room for further development in design.

A water level sensor is installed on the spouting fitting located above the bathtub, so the water level sensor detects the presence of the bath lid and prevents unnecessary water supply.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a block diagram of an automatic constant-temperature, fixed-rate water supply apparatus, and FIG. 2 is a block diagram of another embodiment of an automatic constant-temperature, fixed-rate water supply apparatus. In the figure, A... Automatic temperature constant, metered water supply device, a...
...Hot water supply pipe, b...Water supply pipe, c...Mixing pipe,
1...Mixing function section, 2...Water discharge fitting, 3...Water surface level sensor, 4...Controller.

Claims (1)

[Scope of utility model registration request] A mixing function unit that connects a hot water supply pipe connected to a hot water supply source and a water supply pipe connected to a water supply source and that is electrically operated to mix hot water and water from these pipes at a predetermined ratio, and a bathtub. A water spout fitting located at an upper position and connected to the secondary side of the mixing function section via a mixing pipe line, and a water surface level sensor provided on the water spout fitting to detect the water surface level in the bathtub, This is an automatic constant-temperature, constant-quantity water heater that is constructed by electrically connecting a water level sensor to a controller to form a water heater, and installing multiple systems of these water heaters.