JPS62210345A - Hot-water supplier - Google Patents

Abstract

PURPOSE:To secure the set temperature of hot-water and the set amount of water even when the hot-water or the water remains in a bathtub by a method wherein a gas proportional valve and a water amount proportional valve are controlled by the signals of the water level sensor of the bathtub and a hot-water temperature detecting bath thermistor. CONSTITUTION:Hot-water pouring temperature is set by the hot-water pouring temperature setting knob 17 of a controller 14 and the level of water is set by a water level setting knob 23 while a bath automatic hot-water pouring switch 16 is turned ON. When a water level sensor 26 does not confirm that there is remaining hot-water in a bathtub at first, hot-water provided with a set temperature is poured and the pouring is stopped when a set water level is achieved. When there is remaining hot-water, the hot-water of 80 deg.C is poured at first and the temperature of hot-water in the bathtub is detected by a bath thermistor 25. When the temperature of hot-water in the bathtub has become the set temperature, the hot-water provided with the set temperature is poured and when the level of the hot-water has arrived at the set water level, the water level sensor 26 detects it and the pouring of the hot-water is stopped. A gas proportional valve 7 and a water amount proportional valve 12 are controlled by a controller 22 based on the signals of the water level sensor 26, attached to the bathtub, and the bath hot-water temperature thermistor 25, attached to the side surface of a connecting adaptor in the bathtub, in such a manner whereby the set temperature and the set hot-water amount may be obtained at all times.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a water heater that supplies hot water to baths, kitchens, washrooms, and the like.

BACKGROUND OF THE INVENTION In recent years, there has been a demand for water heaters that automatically shut off when a predetermined amount of hot water is filled in a bathtub.

An example of a conventional water heater will be described below with reference to the drawings. FIG. 3 is an overall configuration diagram of a conventional water heater.

In Figure 3, 1 is a water flow sensor that detects water flow;
is a water governor that regulates the amount of water, 3 is a heat exchanger, 4 is a flame rod, 5 is a main burner, 6 is a spark plug, 7 is a gas proportional control valve that regulates the gas amount of the main burner 5, 8 is a former solenoid valve , 9 is a control device containing control parts, 10 is a combustion fan, and 11 is a thermistor that detects the hot water temperature of the water heater. 12 is a water volume ratio side valve driven by a guard mork that can control the amount of hot water and stop the water; 13 is a tank breaker that separates the bath from the bathtub. 1
4 is a controller which includes a bathtub automatic hot water pouring switch 16, a hot water pouring temperature control 17, a hot water pouring amount control 18, and the like. 19
2 is a connection adapter from which hot water comes out, and 20 is a bathtub.

The operation of the water heater configured as described above will be explained. The pouring temperature is set using the pouring temperature adjuster 17 of the controller 14, the pouring amount is set using the pouring amount adjuster 18,
Turn on the bathtub automatic hot water filling switch 16. Then, the water proportional valve 12 opens and water flows. When water flows, the water flow sensor 1 becomes "ON", the combustion engine 10 rotates, and at the same time, continuous spark discharge is started from the ignition frig 6.

Next, the solenoid valve 8 and gas proportional valve 7 open, gas comes out from the main nozzle (-na 5), and is combusted by continuous spark discharge from the ignition plug 6.The flame rod 4 detects that combustion has started, and sparks are generated. The discharge stops and hot water comes out from the water heater.
Hot water is poured into the bathtub 20 from the connection adapter 19. The water temperature is maintained at the set enema temperature by the gas proportional valve 7, water volume proportional valve 12, hot water output thermistor 11, and microcomputer of the control device 9. The amount of hot water poured is integrated by the microcomputer of the water heater control device 9 using the water amount sensor 1, and the water amount proportional valve 12 stops pouring when the set amount of hot water is reached.

Problems to be Solved by the Invention However, with the above configuration, if hot water or water remains in the bathtub 20, the temperature of the hot water after pouring the hot water will be lower than the set temperature. Moreover, the amount of poured metal becomes larger than the setting. There was a problem.

In view of the above-mentioned problems, the present invention provides a water heater that can ensure the set hot water temperature and set water amount even if hot water or water remains in the bathtub.

Means for Solving the Problems In order to solve the above problems, the water heater of the present invention includes a water level sensor that detects the water level in the bathtub, a bath thermistor that detects the temperature of the water in the bathtub, and a gas proportional control system based on these signals. valve,
The system is equipped with a control device that controls a water flow proportional valve.

Effects The present invention uses the above-described configuration to determine the initial state when pouring bath water, that is, whether or not there is hot water remaining in the bathtub, and if there is hot water left, starts pouring hot water at a high temperature, and if not, starts pouring hot water at a set hot water temperature. Start the hot water. Next, if there is remaining hot water, hot water is poured at a high temperature, and when the bath water temperature reaches the set water temperature, water is poured at the set water temperature from then on. When the set amount of water is reached, the water amount proportional valve is closed to shut off the water and stop the hot water supply operation. Therefore, the set hot water temperature and set amount of hot water can always be obtained.

EMBODIMENT A water heater according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of a water heater in an embodiment of the present invention. In Fig. 1, 21 is a water flow switch that detects the flow of water, 2 is a water governor that regulates the amount of water,
3 is a heat exchanger, 4 is a frame rod, 5 is a main burner, 6
is a spark plug, 7 is a gas proportional valve that adjusts the gas amount of the main burner 5, 8 is a solenoid valve, 22 is a control device containing control parts, 10 is a combustion fan, and 11 detects the hot water temperature of the water heater. 12 is a water flow proportional valve driven by a geared motor that can control the amount of hot water and stop the water, and 13 is a vacuum breaker for disconnecting from the bathtub. 14 is a controller which includes an automatic bath water pouring switch 16, a water pouring temperature setting volume 17, a water level setting volume 23, etc. 24 is a connection adapter from which hot water comes out, and a bath water temperature thermistor 25 is arranged on the side of the connection adapter so as to detect the temperature of the bath water without directly detecting the temperature of the poured water. 20 is a bathtub, and 26 is a diaphragm type water level sensor that detects the water level in the bathtub.

FIG. 2 is a flowchart of pouring hot water temperature control and pouring amount control.

The operation of the water heater configured as described above will be described below with reference to FIGS. 1 and 2.

The process by which hot water comes out of the water heater is the same as that of conventional water heaters, so detailed explanation will be omitted. Set the water pouring temperature with the hot water pouring temperature setting volume 17 of the controller 14, set the water level with the water level setting volume 23, and turn the bath automatic hot water pouring switch 16 to "
"On". Regarding the hot water temperature and amount, as shown in the flowchart of FIG. 2, first, it is confirmed by the water level sensor 26 whether there is any hot water remaining in the bathtub. If not, pour hot water at the set temperature,
When the water level reaches the set level, pouring will stop. If there is any remaining hot water, an enema is first made at 80°C, the bath thermistor 25 detects the bath water temperature, and when the bath water temperature reaches the set temperature, the water pouring temperature is set to the set temperature, and when the set water level is reached, the water level sensor 26 detects the bath water temperature. Detected and stops pouring.

As described above, according to this embodiment, the water level sensor 26 is installed in the bathtub.
And the bath water warm boomister 2 on the side of the connected agbuku in the bathtub
5 is attached, and by controlling the gas proportional valve 7 and the water amount proportional valve 12 with the control device 22 based on these signals, the set hot water temperature and set hot water amount can always be obtained.

Effects of the Invention As described above, the present invention includes a water level sensor that detects the water level in the bathtub, a thermistor that detects the water temperature in the bathtub, a gas proportional valve that controls the gas amount, and a water shutoff function that controls the water amount. A water flow proportional valve, a hot water tap thermistor that detects hot water temperature,
Equipped with a bath hot water pouring switch, a bath temperature setting device such as a bath temperature setting device, a bath water level setting device such as a bath water level setting device, and a control device, the hot water temperature is controlled depending on whether or not there is remaining hot water in the bath, so that the set hot water is always maintained. You can obtain the desired temperature and amount of hot water.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram of a water heater according to an embodiment of the present invention, FIG. 2 is a flowchart according to an embodiment of the invention, and FIG. 3 is an overall configuration diagram of a conventional water heater. 22...Control device, 23...Water level setting volume, 25...Bath water temperature thermistor, 2
6...Water level sensor. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
figure

Claims (1)

[Claims] A water level sensor that detects the water level in the bathtub, a bath thermistor that detects the water temperature in the bathtub, a gas proportional valve that controls the amount of gas to the main burner, and a water proportional valve that controls the water amount and has a water shutoff function. and a hot water thermistor that detects the hot water temperature,
It is equipped with an automatic hot water pouring switch, a bath temperature setting device, a bath water level setting device, and a control device, and this control device receives an "on" signal from the automatic hot water pouring switch and a signal indicating that there is a water level from the water level sensor. When input, it instructs high-temperature hot water supply, and when a signal from the bath thermistor that the bath temperature becomes equal to the bath set temperature is input, the hot water temperature is set to the bath set temperature, or a signal from the water level sensor indicating that the water level is not reached is sent. When input, the gas proportional valve and water volume proportional valve are controlled so that hot water is supplied at the bath set temperature from the beginning, and when the bath reaches the set water level, the water volume proportional valve is closed to shut off water and hot water supply is stopped. Water heater.