JPH01147230A - Hot-water supply device - Google Patents

Abstract

PURPOSE:To secure the required flow rate of hot-water by means of the operation only of opening and closing switches by providing a plurality of switches for setting the valve position of an electric supply stopping valve adjusting the flow rate of the hot-water supply. CONSTITUTION:The title device is equipped with a hot water storage tank, a hot water faucet 3 connected to the hot water storage tank, an electric supply stopping valve which varies or stops the flow rate of hot water to be supplied from the faucet 3, and a plurality of switches for setting the opening position of this electric supply stopping valve, and is constituted so as to secure a flow rate according to the purpose for se by selecting any one of the switches. The plurality of said switches are provided in such forms as a closing switch 15 for closing of the electric supply stopping valve, an opening switch 16 for the maximum opening of said valve, an opening switch 17 for the semiopening of the same, and an opening switch 18 for the slight opening thereof, respectively. According to the above-described constitution, any one of these switches may be selected, thereby the opening degree of the electric supply stopping valve being decided to obtain the required quantity of hot-water supply.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is increasingly needed for water heaters that supply hot water.

Hereinafter, a conventional water heater will be described with reference to the drawings. FIG. 4 is a block diagram of a conventional hot water supply device, FIG. 5 is a perspective view of the device, and FIG. 6 is a diagram of its electric circuit 21. In Fig. 4, 1 is a hot water storage tank for storing hot water, 2 is a heater for warming the water in the hot water storage tank 1,
3 is a hot water faucet from which hot water is dispensed; 4 is an electric stop valve that supplies and stops water; 5 is a motor that opens and closes the electric stop valve; 6 is a mixing valve that changes the water distribution ratio and adjusts the hot water temperature; 7 is a knob that determines the mixing ratio of the mixing valve 6; 8 is a power source for supplying electricity to the electric feed valve 4; and 9 is an on/off switch for turning on and off the supply of electricity from the power supply 8. be.

In FIG. 5, 10 is an energization indicator lamp that indicates energization to the heater 2, 11 is a main body, and 12 is a power cord. In FIG. 6, 13 is a close limit switch that detects the closed position of the electric feed stop valve 4, and 14 is an open limit switch that detects the open position of the electric feed stop valve 4.

The operation of the water heater configured as described above will be described below. First, when the switch 9 is pressed in FIG.
It is supplied to the motor 5 through the connection circuits 31 and 7 indicated by the broken line in a, and flows through the connection circuit of the open/close switch 9b, and then through the open/close switch 14 to the - of the power supply section 6. Then, the motor 5 starts rotating and when the electric feed valve 4 opens to a predetermined open position, the contact of the open limit switch 14 opens due to a cam structure (not shown) and the motor 5 starts rotating.
stops. At this time, the closing limit (SV40) is closed. Then, as shown in FIG. 4, the supplied water passes through the electric stop valve 4 and is divided into water that enters the hot water tank 1 and water that is mixed with the hot water in the hot water storage tank 1 and discharged at the mixing valve 6. Hot water is supplied from the top by the amount of water that has entered the hot water storage tank 1, and the mixing valve 6
It is mixed with the water that has passed through the water and drained from the hot water faucet 3.

However, due to the problems that the invention aims to solve, the above-mentioned configuration does not allow adjustment of the flow rate of hot water. In addition, it is possible to vary the hot water flow rate by installing a water supply valve on the water supply side of the electric supply valve 4 and adjusting the opening degree of the valve. After opening the electric shutoff valve 4 by operating the on/off switch 9, the water supply valve provided on the water supply side had to be adjusted to a hot water flow rate suitable for the usage conditions, which was inconvenient.

The present invention has been made in view of the above-mentioned problems, and provides a hot water supply device that can obtain a required amount of hot water flow rate simply by operating an on/off switch.

Means for Solving the Problems In order to solve the above problems, the hot water supply device of the present invention includes a hot water storage tank, a hot water faucet connected to the hot water storage tank, and a variable or stopped flow rate of hot water from the hot water faucet. It is equipped with an electric feed stop valve and a plurality of switches for setting the valve open position of the electric feed stop valve, and is configured to obtain a flow rate according to the purpose of use by selecting any one of the switches. It is.

Operation In the above configuration, by selecting any one of the plurality of switches, the opening degree of the electric feed valve is determined, and the required amount of hot water can be obtained.

Embodiment 5 Hereinafter, a water heater according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a water heater according to an embodiment of the present invention, FIG. 2 is a perspective view of a main part of a limit switch of an electric feed valve of the same device, and FIG. 3 is an electric circuit diagram of the same device.

In addition, in these figures, the same numbers are attached to the same components as in the conventional example, and the explanation thereof will be omitted.

In FIG. 1, 15 is a close switch that closes the electric feed stop valve 4, 16 is an open switch that opens the electric feed stop valve 4 to the maximum, and 17
is a close switch that opens the electric feed stop valve 4 halfway, and 1 day is an open switch that opens the electric feed stop valve a little.

In FIG. 2, 19 is a close limit switch connected to the close switch 16, and 20, 21.22 are open limit switches connected to open switches 17, 18, and 19, respectively. 23 is a motor gear that transmits the power of the motor 5;
4 is a valve shaft gear that transmits the power from the motor gear 23 to open and close the valve of the electric feed valve 4. The valve shaft gear 24 is provided with cams for operating a closing switch 19, an opening switch 20, an open limit switch 21, and an open limit switch 22, respectively.

In FIG. 3, 15a, 15b, 16a, 16b.

17a, 17b, 18a, and 18b are respectively a close switch 15, an open switch 16, and an open switch 17. open switch 1
It represents 8 contact points.

The operation of the water heater configured as described above will be explained. When the open switch 16 is pressed to supply hot water, the contacts of the open switch 16, the motor 5. A current flows through the contact point 16b of the open switch 16 and the open limit switch 20 in order to the negative terminal of the power supply unit 8. Then, the motor gear 23 shown in FIG. 2 rotates, and the valve shaft gear 24 receives this power, and when the electric feed valve 4 opens to the maximum, the cam provided on the valve shaft gear 24 rotates. The contact of the open limit switch 20 opens and the motor 5 stops. Therefore, the maximum flow rate of hot water can be obtained from the faucet 3. To stop the hot water supply, the close switch 15 is pressed, the close limit switch 19 is disconnected, and the electric feed stop valve 4 is closed by operating in the opposite manner to that described in section 2, stopping the hot water supply.

Also, if a medium flow rate is sufficient, such as when washing by hand,
When the open switch 17 is pressed and the open switch 18 is pressed when a small amount of hot water is needed, such as when washing dishes, the same operation as described above is performed, and a suitable hot water flow rate can be obtained.

Effects of the Invention As is clear from the above description of the embodiments, the water heater of the present invention selects an appropriate switch from a plurality of switches to set the valve position of the electric shutoff valve that adjusts the flow rate of hot water. By doing so, it is possible to obtain the hot water flow rate according to the purpose of use. Since you can choose the appropriate amount of hot water to drain, you won't run out more hot water than necessary, reducing the possibility of running out of hot water and saving energy.

[Brief explanation of the drawing]

FIG. 3 is a perspective view of the main parts of the main switch, FIG. 3 is an electric circuit diagram of the device, FIG. 4 is a configuration diagram of a conventional water heater, and FIG. 5 is a diagram. 1... Hot water storage tank, 3... Hot water faucet, 4...
...Electric feed valve, 15...Close switch, 16,1
7.18... Open switch, 19... Close limit switch, 20.21.22... Open limit switch, 23... Motor gear, 24... Valve shaft gear.

Claims (1)

[Claims] A hot water storage tank, a hot water faucet connected to the hot water storage tank, an electric shutoff valve for varying or stopping the flow rate of hot water from the hot water faucet, and a plurality of switches for setting the valve open position of the electric hot water tap. A water heater having a configuration in which an output flow rate corresponding to the purpose of use can be obtained by selecting any one of the switches.