JPH0315964Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Purpose of the Invention" (Field of Industrial Application) The present invention relates to a device that automatically supplies bath water at a predetermined temperature and in a predetermined amount to a bathtub.

(Prior art) Conventional bath water supply systems lead hot water heated by a water heater and water from the tap to the bathroom via hot water pipes and water supply pipes, where they are connected to a valve mixer faucet or a thermostatic mixer faucet. They were mixed and used.

However, in order to supply bath 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, the valve must be manually operated as well. It was necessary and time-consuming.

Furthermore, the temperature of the bath water after operation must be checked either by feeling with the hands or by using a thermometer, resulting in double effort.

Therefore, in order to solve the above-mentioned drawbacks, a method has been adopted in which a water heater is equipped with a temperature control function, and the water heater is used to boil water to a set temperature.

However, this method has the disadvantage that it is difficult to supply water from a water heater to several locations at different temperatures, which limits its use, and furthermore, the amount of water used is 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 device that contacts 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, a method was adopted in which the bathtub was equipped with a hopper to prevent sewage from flowing back, a water supply port was installed on the side of the bathtub to supply water, and the amount of 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.

(Technical problem to be solved by the present invention) The technical problem to be solved by the present invention is to make it possible to set the bath water supply temperature and water supply amount both inside the bathroom and outside the bathroom nearby, and to To provide a means for detecting the water level inside a bathtub with a function of detecting the presence or absence of a bath cover.

"Structure of the invention" (Means for solving the technical problems) The means taken by the invention to solve the above problems are:
A mixing function unit that is connected to a hot water supply pipe connected to a water heater and a water supply pipe connected to a water supply source, and that is electrically operated to mix hot water and water from both pipes at a predetermined ratio, and a bathtub. A water spout fitting located above and connected to the secondary side of the mixing function section via a mixing water pipe, a thermistor provided in the mixing water pipe to sense the temperature of the mixed water, and a main body of the water spout fitting. A water level sensor is installed in the bathtub to detect the water level in the bathtub, and the above-mentioned mixing function section, thermistor,
Connect the water level sensor electrically to the control panel,
In addition, an operating section for inputting signals for setting the temperature and amount of bath water to this control panel is provided separately for the husband and wife in the main body of the water spouting fitting and outside the bathroom.

(Function) According to the above means, the control panel controls the operation of the mixing function section based on the set temperature set on the water spouting fitting in the bathroom and the operation section provided outside the bathroom, and the function section controls the operation of the mixing function section. and water from the water supply source are mixed at a predetermined ratio, and the mixed water at the set temperature is supplied from the spout fitting into the bathtub as bath water, and a thermistor constantly senses the temperature of the mixed water and sends a signal. If the mixed water temperature changes above or below the set temperature, the control panel receives the signal from the thermistor and adjusts the mixing ratio of hot water and water in the mixing function section to adjust the mixed water temperature. It returns and maintains the set temperature. In addition, the water level sensor on the water spouting fitting constantly detects the water level in the bathtub and sends the signal to the control panel, and when the water level reaches the level corresponding to the set water volume set on the control panel,
The control panel receives a signal from the water level sensor and stops the water supply, and if the bathtub is covered with a bathtub lid when water is being supplied to the bathtub, the presence of the bathtub lid is detected by the water level sensor. This will be detected as a high water level and water will not be supplied.

(Example) As shown in the drawing, the automatic fixed-temperature fixed-quantity water supply device for bath water in this example includes a mixing function section 1, a water discharging fitting 2, a thermistor 3, a water surface level sensor 4, a control panel 5, and an operation section 6. , 7.

The mixing function section 1 mixes hot water from the water heater a and water from the water supply source, i.e., water supply c, at a predetermined ratio to produce mixed water at a predetermined temperature, and includes a hot water flow valve 1a and a water flow valve 1b, each of which is an electric valve. and its hot water flow valve 1.
a is connected to the hot water supply pipe 8 that connects to the water heater a,
A water flow valve 1b is connected to a water supply pipe line 9 that connects to a water supply c. Note that the mixing function section 1 may optionally be constituted by a thermostatic mixing valve operated by a motor.

The water spouting fitting 2 supplies the mixed water from the mixing function section 1 as bath water to the bathtub b, and is located above the bathtub b and is attached to the wall d in the bathroom.
It is connected to the secondary side of the mixing function section 1 via a mixing water pipe 10.

The mixed water pipe 10 is provided with an on-off valve 11 consisting of a solenoid valve 19, and the on-off valve 11 opens and closes the mixed water pipe 10 to supply and stop mixed water, that is, bath water. It is.

The thermistor 3 senses the temperature of the mixed water from the mixing function section 1, and is provided in the mixed water pipe 10.

The water surface level sensor 4 detects the water surface level in the bathtub b, and is composed of an ultrasonic sensor, and is integrally attached to the lower surface of the main body of the water spouting fitting 2 and faces the bottom surface of the bathtub b.

The control panel 5 manages the bath water supply temperature and water supply amount, and includes the mixing function section 1, thermistor 3,
It is electrically connected to the on-off valve 11 and the water surface level sensor 4.

The operating units 6 and 7 are electrically connected to the control panel 5, and are used to input signals for setting the bath water temperature and water amount to the control panel 5, and to turn on and cut off the power. They are provided separately and independently on the upper surface of the main body of the metal fitting 2 and outside the bathroom, for example, in the kitchen, and are provided with an operating lever and a power switch for setting the water supply temperature and water supply amount.

In particular, since the operating parts 6 and 7 are integrally provided on the main body of the water spouting metal fitting 2, the installation work can be completed together with the water spouting metal fitting 2.

Note that reference numerals 12 and 13 in the figure are check valves provided on the primary side of the mixing function section 1.

In the water supply device of this embodiment as described above, the on-off valve 11 opens when the power is turned on by the operation unit 6 or 7, and the setting signal is sent as the water supply temperature and water supply amount are set by the operation unit 6 or 7. control panel 5
memorizes the set temperature and water volume. Then, the control panel 5 controls the operation of the mixing function part 1 based on the set temperature, and in the function part 1, the hot water from the water heater a and the water from the tap c are mixed at a predetermined ratio, and the mixed water at the set temperature is is connected to the water discharging fitting 2 via the mixing water pipe 10.
Water is then supplied into the bathtub b as bath water. The temperature of the mixed water is always sensed by a thermistor 3,
The signal is sent to the control panel 5, and therefore, when the temperature of the mixed water changes above or below the set temperature, the control panel 5 receives the signal from the thermistor 3 and returns the memorized set temperature. The mixing ratio of hot water and water in the mixing function section 1 is adjusted according to the temperature difference, and the mixed water temperature is returned to and maintained at the set temperature.

The rise in the water level in bathtub b due to the supply of bath water is constantly detected by the water surface level sensor 4, and the detection signal is sent to the control panel 5, and the water level in bathtub b is set as the water supply progresses. When the level corresponding to the water amount is reached, the control panel 5 receives a signal from the water surface level sensor 4, confirms that the water supply amount has reached the stored set water amount, and closes the on-off valve 11 to stop the water supply.

Furthermore, if bathtub b is covered by a bathtub lid when water is being supplied for bathing, the presence of the bathtub lid is detected by the water level sensor 4 as a water surface level higher than the top surface of bathtub b, and water is not supplied. Not possible.

"Effects of the Invention" According to the configuration of the present invention as described above, the following effects are achieved.

No matter what type of water heater is used, it is possible to supply bath water at a fixed temperature and in a fixed amount by simple remote control using the operating units inside and outside the bathroom.

Even when water is supplied to several locations, by installing fixed-temperature and fixed-quantity water supply devices at each location, it becomes possible to set different fixed-temperature and fixed-quantity values for each location by remote control of the operation unit.

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.

We chose the main body of the water spout as the location for the control unit and level sensor in the bathroom.
Wiring work for the operating unit and level sensor can be done together with piping for the water discharging fittings, making installation easy.

[Brief explanation of drawings]

The drawing is a system diagram showing one embodiment of the water supply device of the present invention. In the figure, a... Water heater, b... Bathtub, c... Water supply (water supply source), 1... Mixing function section, 2... Water discharge fitting, 3... Thermistor, 4... Water level sensor, 5 ...Control panel, 6, 7...Operation unit, 8...Hot water supply pipe, 9...Water supply pipe, 10...Mixing water pipe.

Claims (1)

[Scope of utility model registration request] A mixing function unit that is connected to a hot water supply pipe connected to a water heater and a water supply pipe connected to a water supply source, and that is electrically operated to mix hot water and water from both pipes at a predetermined ratio, and a bathtub. A water spout fitting located above and connected to the secondary side of the mixing function section via a mixing water pipe, a thermistor provided in the mixing water pipe to sense the temperature of the mixed water, and a main body of the water spout fitting. The mixing function section, thermistor, and water level sensor are electrically connected to a control panel, and the control panel is equipped with a water surface level sensor that detects the water level in the bathtub. An automatic fixed-temperature fixed-quantity water supply device for bath water, in which operation sections for inputting signals for bath water are separately provided on the main body of the water spouting fitting and outside the bathroom.