JPS6266052A - Automatic hot water supplier - Google Patents

Abstract

PURPOSE:To make it possible to automatically supply hot water of a suitable temperature and a suitable amount to a bathtub from a kitchen and to automatically discharge water after taking bath by controlling electromagnetic valves provided at a water amount control mechanism with a closing function, provided with a hot water supplier, and a drain pipe by means of a controller of a kitchen, a bath and the like. CONSTITUTION:When a hot water supply tap 24 is opened, water begins to flow and when water reaches an amount more than an ignition water amount, a main electromagnetic valve 8, a gas proportional control valve 7 are opened through a control circuit 11a by a signal from a water amount sensor 1. A gas flows to a main burner 5 and when a spark is generated by an ignition plug 6, the above gas burns in the main burner 5. Hot water to be supplied to the bathtub obtains a preset hot water amount by the operation of a water amount proportional control valve 14 and the gas proportional control valve 7. Hot water is supplied from a hot water supply pipe 17 to the bathtub 16. The number of pulses generated in the water amount sensor 1 is counted, and calculated by a microcomputer within a control circuit 11a to read the hot water amount. When the hot water amount reaches a preset hot water amount, a motor 15 is rotated reversely and the water amount proportional valve 14 is closed, thus completing the automatic hot water amount control. When an automatic drain switch 25 is depressed, an electromagnetic valve 19 provided in a drain tube 18 is opened and water is automatically drained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an automatic hot water supply device for supplying hot water to baths, kitchens, washrooms, etc.

Original technology In recent years, water heaters have developed a function that automatically fills the bathtub with hot water and stops when it reaches a predetermined level. A telecontrol system for boiling a bath with a telephone using a telephone line has been requested and is now being realized.

An example of a conventional water heater will be described below with reference to the drawings. FIG. 3 shows a conventional water heater. In FIG. 3, reference numeral 1 denotes a water amount sensor that detects the amount of water.

2 is a water governor that controls the amount of water, 3 is a heat exchanger, 4 is a flame rond that detects the presence or absence of combustion, 5 is a main burner, 6 is a spark plug, 7 is a gas proportional control valve that adjusts the amount of gas, 8 is an original Solenoid valve, 9 is a fan that sends combustion air, 10
11 is a thermistor that detects the water temperature, and 11 is a control circuit that controls the above-mentioned functional components.

The operation of the water heater configured as described above will be described below. First, when the water heater is opened in the kitchen or the like, and the water flow sensor 1 detects that the water flow exceeds the ignition flow rate, it sends an ONJ signal to the control circuit 11. Next, the control circuit 11 opens the main solenoid valve 8 and also opens the gas proportional control 7 to control the amount of gas to a certain constant level.

Meanwhile, at the same time, the combustion fan 9 is rotated by the control circuit 11 to draw air necessary for combustion into the combustion chamber, and the spark plug 6
A spark discharge occurs at , and the gas sent first is combusted in the main burner 5 . The temperature of the hot water from the heat exchanger 3 heated by the burner 5 is detected by the thermistor 1°, and fed back to the control circuit 11, the gas proportional control valve 7 is controlled so that the temperature reaches the set value, and the specified amount of gas is reached. A signal will be issued. Furthermore, the water governor 2 controls the amount of hot water that comes out of the water heater.

Problems to be Solved by the Invention However, with the above configuration, when filling a bathtub with hot water, one must go to the bathroom each time, open the hot water tap, adjust the water temperature and amount, and once the specified amount of hot water has been filled, the system must be turned on again. I had to go to the bathroom and close the hot water heater. In view of the above-mentioned problems, the present invention automatically pours hot water at the appropriate temperature and amount into the bathtub,
To provide a hot water supply device that can automatically drain water after taking a bath.

Means for Solving the Problems In order to solve the above problems, the present invention branches the hot water supply side of the water heater into two or more systems, provides each of them with a mechanism that can control the amount of water, and installs a mechanism on the side that supplies hot water to the bath. Provide a closing function and connect the piping to the bottom of the bathtub. Furthermore, a drain pipe is provided that branches off from the hot water pipe installed at the bottom of the bathtub and is connected via a solenoid valve. The water flow control mechanism with a shutoff function provided in the water heater and the solenoid valve provided in the drain pipe are controlled by a controller in the kitchen, bath, etc.

Effects With the above-described configuration, the present invention can automatically pour hot water at an appropriate temperature and amount into a bathtub even from the kitchen, and automatically drain the water after taking a bath.

EXAMPLE An automatic hot water supply apparatus according to an example of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of an automatic water heater according to an embodiment of the present invention. In FIG. 1, parts 1 to 10 are the same as the parts of the conventional example. Reference numeral 11a denotes a control circuit according to the present invention, which is installed inside the main body 30 of the water heater. 12a is a thermistor that detects water temperature; 13 is a branch passage that branches off from the hot water supply circuit 31 and supplies hot water to the bath; and 14 is one of the motors 15 with gears.
16 is a bathtub; 17 is a hot water pipe connected to the branch passage and installed at the bottom of the bathtub; 18 is a drain pipe; 19 is a solenoid valve; 2o is a bath controller that is controlled in the bathroom, 21 is a main controller that is controlled in the kitchen, and 22 is a hot water heater in the bathroom. The dotted line in the figure is a wiring circuit connected to the control circuit 11a.

FIG. 2 shows an embodiment of the bath controller and main controller. 23 is an on/off switch, 24 is an automatic pouring switch, 25 is an automatic drain switch, 26 is an indicator lamp, and 27 is a combustion confirmation lamp. Reference numeral 28 functions as a temperature fine adjustment knob, and 29 functions as a pouring amount adjustment knob.

Regarding the automatic water heater configured as above, the following is the first part.
The operation will be explained using FIG.

First, the operation of supplying hot water to the kitchen and washroom will be explained. When the hot water tap 24 is opened, water starts flowing. When the amount of water exceeds the ignition water amount, the original solenoid valve 8 and gas proportional control valve 7 are opened via the control circuit 11a in response to a signal from the water amount sensor 1, and the gas flows to the main burner 5 and when a spark is generated at the ignition plug 6, the previous gas is transferred to the main burner. Burns at 5. Mixing valves are commonly used in kitchens and washrooms, and the temperature of hot water from a water heater can be controlled at one point, for example, at 60'C. Therefore, the detection signals from the water temperature thermistor 12a and the hot water temperature thermistor 10 are input to the control circuit 11m, and the microcomputer performs calculations to instruct the gas proportional control valve 7 to burn a predetermined amount of gas. A frame rod 4, which is an ignition detection device, is provided as a safety device. Next, automatic pouring of hot water into the bath will be explained. Turn the on/off switch 23 of the controller in Fig. 2
"N", the control is switched so that the control on the controller side takes priority. When the automatic pouring switch 24 is further pressed, the motor 15 rotates, the water flow proportional control valve 14 is opened, and water begins to flow. The temperature of the water poured into the bathtub is generally 45"0 to 47°C.
Then, the water proportional control valve 14 and the gas proportional control valve 7 are operated to obtain the set hot water temperature. Hot water is supplied to the bathtub 16 from a hot water supply pipe 17. At this time, the solenoid valve 19 of the drain pipe 18 is in a closed state. For example, 101 for pouring amount! A pouring amount adjustment knob 29 that can be adjusted up to 24 (M) is provided, and can be set in advance according to your preference.The pouring amount is determined by counting the number of pulses generated by the water flow sensor 1 and using the microcomputer in the control circuit 11a. The amount of hot water is read by integrating the amount of hot water.When the set amount of hot water is reached, the motor 16 is rotated in the opposite direction and the water amount proportional control valve 14 is closed to complete the automatic hot water pouring.Also, after the bath is finished, the automatic drain switch on the controller is turned on. When 25 is pressed, the solenoid valve 19 provided in the drain pipe 18 opens and the water is automatically drained.At this time, the water flow control valve 14 is closed.As described above, the water is automatically controlled. It is most effective to install a controller in the kitchen.If necessary, a bath controller 20 may be installed in the bathroom.The setting of the pouring water temperature is controlled by the fine adjustment knob 28.

As described above, according to this embodiment, the hot water supply side is branched into two or more systems, one of which is provided with a water flow proportional control valve with a shutoff function for supplying hot water to the bathtub, and a hot water supply pipe is provided in the bathtub. A solenoid valve is provided in the drain pipe branched from the hot water supply pipe, and a controller is provided to open and close the water proportional control valve and the solenoid valve via a control circuit, thereby automatically pouring hot water into the bathtub and draining the bathtub. It can be automatically drained after use.

Effects of the Invention As described above, the present invention not only has the convenience of automatically filling the bathtub with water and automatically draining water without having to go to the bathroom every time, but is also compatible with HA (e.g., telecontrol system). This allows you to automatically fill and drain hot water in your bath even when you are not at home.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an automatic water heater according to an embodiment of the present invention, FIG. 2 is an external view of a main controller and a bath controller, and FIG. 3 is a block diagram of a conventional water heater. 11a... Control circuit, 13... Branch passage, 14... Water flow proportional control valve (water flow control mechanism with closing function) 15... Motor, 16... ...Bathtub, 17...Hot water pipe, 18...Drain pipe, 19
... Solenoid valve, 20.21 ... Bath and main controller (controller).

Claims (1)

[Claims] The hot water supply side is branched into two or more systems, and the hot water supply circuit of each system is equipped with a mechanism for controlling the amount of water, and a water heater with a shutoff function added to one system that supplies hot water to the bath, a bathtub, and the above-mentioned hot water supply to this bathtub. a water supply pipe in which the water supply pipe is connected, a drain pipe branched from the water supply pipe, a solenoid valve provided in the drain pipe, and a control circuit that opens and closes the solenoid valve and controls the opening and closing of the water flow control mechanism with a closing function. , and a controller that controls automatic pouring of hot water into a bathtub and automatic drainage of water through this control circuit.