JPH0352308Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a hot water tank for a hot water flush toilet, and provides a hot water tank for a hot water flush toilet in which hot water at a constant temperature is supplied to a nozzle without a drop in water temperature during flushing. With the goal.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The hot water tank of the hot water flush toilet of the present invention (hereinafter referred to as the hot water tank of the present invention) will be described below according to an embodiment shown in the drawings.

FIG. 1 shows an example of a cleaning device in which the hot water tank of the present invention is used, and the cleaning device 2 is installed at the rear of a hot water flushing toilet 1.

The cleaning device 2 of the present invention supplies hot water in a hot water tank 4 to a cylinder 7 using a pump 3, and uses the water pressure to spray water from a nozzle 9 at the tip of an extending plunger 8 as a fountain.

FIG. 2 shows details of the hot water tank 4 of the present invention,
The hot water tank 4 includes an electromagnetic three-way valve 10 provided at the bottom of the tank and an electromagnetic three-way valve 1 provided at the top of the tank.
1.

The two electromagnetic three-way valves 10, 11 are connected at one port each by a water conduit 17 fitted with a pump 3.

The remaining two ports of one electromagnetic three-way valve 10 are connected to a water channel 18 that communicates with the low tank 19 and a suction port 20 that opens at the bottom of the hot water tank 4 .

The remaining two ports of the other electromagnetic three-way valve 11 are connected to a water channel 16 that communicates with the nozzle 9 and a return port 21 that opens at the top of the hot water tank 4 .

Next, a heater 5 and a temperature detection element 22 such as a thermistor are installed in the lower part of the hot water tank 4.

Furthermore, the hot water tank 4 is equipped with a water level switch 12, which includes a high water level switch 14 and a low water level switch 15, which are opened and closed by a magnetic float 13.

Next, a control circuit 6 is provided, which uses the cleaning switch 29, the water level switch 12, and the temperature detection element 22 as inputs, and uses the heater 5 and the electromagnetic three-way valves 10, 11 as outputs to switch between the following three operating states. .

In other words, the control circuit 6 has three functions: cleaning, water supply, and heating.
Each operating state will be explained below.

First, a cleaning state is shown in FIG. 3. In this state, the lower electromagnetic three-way valve 10 has its suction port 20 connected to the
7, and the upper electromagnetic three-way valve 11 has its water channel 17 connected to the water channel 16.

In this state, the pump 3 is driven, and hot water stored in the hot water tank 4 is sucked in from the suction port 20, sent to the waterway 16 through the waterway 17, and jetted out from the nozzle 9 as a fountain.

That is, the fountain cleanses the user's area after relieving himself in the hot water flushing toilet 1.

Next, the water supply state is shown in FIG. 4. In this state, the lower electromagnetic three-way valve 10
The upper electromagnetic three-way valve 11 is connected to the water channel 1.
7 is connected to the return port 21.

In this state, the pump 3 is driven and the water sucked from the water channel 18 is discharged into the hot water tank 4 through the return port 21.

Next, a heating state is shown in FIG. 5. In this state, the lower electromagnetic three-way valve 10 has its suction port 20 connected to the
7, and the upper electromagnetic three-way valve 11 has a water passage 17 connected to a return port 21.

In this state, the pump 3 is driven, and the hot water stored in the hot water tank 4 is sucked in through the suction port 20 and discharged through the return port 21.

That is, the hot water in the hot water tank 4 is stirred up and down by the pump 3.

Since the heater 5 is energized at the same time in this heating state, the temperature of the hot water in the hot water tank 4 increases uniformly while being stirred.

As is clear from the above, the hot water in the hot water tank 4 used during cleaning is sufficiently stirred during heating to eliminate any difference in temperature, so the temperature of the hot water supplied to the nozzle 9 during cleaning does not change. become.

The above three operating states of cleaning, water supply and heating are started and stopped due to the following reasons.

That is, cleaning is performed by the open/close signal of the user's cleaning switch 29, water supply is performed by the open/close signals of the high water level switch 14 and low water level switch 15 by vertical movement of the float 13 of the water level switch 12, and heating is performed by the temperature sensing element 22. According to the signal from.

An example of a specific configuration of the control circuit 6 is shown in FIG. 6. The control circuit 6 compares the output of the temperature detection element 22 with a set value, and when the former is lower than the latter, relay 2 is activated.
It has a comparison circuit 23 that excites 7.

Also, a high water level switch 14, a relay 26, and a low water level switch 15 are connected in series to a power source 40.

Also, the cleaning switch 29, the relay 25 and the low water level switch 15 are connected in series to the power source 40.

On the other hand, the pump 3 is connected to a power source 40 through a parallel circuit of switches 33, 34, and 35.

Also, the heater 5 and the switch 38 are connected to the electromagnetic three-way valve 1.
0 and the switch 37, and the electromagnetic three-way valve 11 and the switch 36 are each connected in series to the power source 40.

When the relay 27 is energized, the switches 35 and 38
is closed, and the relay 26 closes the switches 34 and 3 when energized.
7 is closed and relay 25 is energized when switch 3 is closed.
3, 36.

The operation of the control circuit 6 described above will be briefly explained for each of the three operating states of cleaning, water supply, and heating.

First, for cleaning, the user must turn the cleaning switch 29.
By closing the relay 25 is energized (here, the low water level switch 15 is switched to the fixed terminal side shown in the figure when the water level is higher than this).

As a result, the switch 35 is closed and the pump 3 is driven, and the switch 36 is also closed and the electromagnetic three-way valve 11 is switched to the excitation position.

The electromagnetic three-way valve 10 is in the demagnetized position and the electromagnetic three-way valve 1
The connection states of 0 and 11 are shown in FIG.

Next, regarding water supply, as the water level falls, the low water level switch 15 is switched to the left fixed terminal side.

As a result, the relay 26 is energized, the pump 3 is driven, and the electromagnetic three-way valve 10 is switched to the energized position.

The electromagnetic three-way valve 11 is in the demagnetized position and the electromagnetic three-way valve 1
The connection states of 0 and 11 are shown in FIG.

As the water level rises, the high water level switch 1 is activated.
4 is opened and stopped.

Next, regarding heating, the comparator circuit 23 excites the relay 27 as the water temperature decreases.

As a result, the pump 3 is driven and the heater 5 is energized.

The electromagnetic three-way valves 10 and 11 are both in a demagnetized state, and their connection states are as shown in FIG.

The hot water tank of the hot water flushing toilet of the present invention has the following effects based on the configuration and operation shown in the above embodiments.

(1) The hot water tank of the present invention has the configuration described in the claims for utility model registration, and in particular, the up and down electromagnetic three-way valves are switched to operate in three operating states: cleaning, water supply, and heating, so water can be supplied simultaneously during cleaning. As a result, hot water at a constant temperature in the tank is supplied to the nozzle during cleaning.

(2) The hot water tank of the present invention has the same configuration as above, and the pump is driven especially in the heated state and the hot water in the tank is stirred up and down, so there is no difference in the temperature of the water in the tank.

[Brief explanation of the drawing]

Figure 1 is a conceptual diagram showing an example of a cleaning device in which the hot water tank of the present invention is used, Figure 2 is a cross-sectional front view of the same hot water tank, and Figure 3 is one of the three operating states of the same hot water tank. Diagram showing the cleaning state, No. 4
FIG. 5 is a diagram showing the water supply state as above, FIG. 5 is a diagram showing the heating state as above, and FIG. 6 is a diagram showing an example of a specific configuration of the control circuit of the hot water tank as above. 1: Hot water flush toilet, 2: Cleaning device, 3: Pump, 4: Hot water tank, 5: Heater, 6: Control circuit, 7: Cylinder, 8: Plunger, 9: Nozzle, 10: Solenoid three-way valve, 11: Solenoid Three-way valve, 1
2: Water level switch, 13: Float, 14: High water level switch, 15: Low water level switch, 16: Channel, 17: Channel, 18: Channel, 19: Low tank, 20: Suction port, 21: Return port, 22: Temperature Detection element, 23: comparison circuit, 25 to 27: relay, 29: cleaning switch, 33 to 38: switch, 40: power supply.

Claims (1)

[Scope of claim for utility model registration] An electromagnetic three-way valve installed at the bottom of the tank, an electromagnetic three-way valve installed at the top of the tank, a waterway connecting both electromagnetic three-way valves and equipped with a pump, and a lower electromagnetic three-way valve. The remaining two ports are connected to the water supply waterway and the suction port that opens at the bottom of the tank, and the remaining two ports of the upper electromagnetic three-way valve are connected to the nozzle that spouts hot water for local cleaning. The heater inputs inputs from the communicating waterway and the return port opening at the top of the tank, the heater and temperature sensing element installed at the bottom of the tank, the water level switch installed on the tank, the cleaning switch, the water level switch, and the temperature sensing element. and both electromagnetic three-way valves are used as outputs to perform the following control: a. Based on the signal from the cleaning switch, the lower electromagnetic three-way valve connects its suction port to the pump waterway, and the upper electromagnetic three-way valve connects the pump waterway to the waterway to the nozzle. Connect and drive the pump. b The lower electromagnetic three-way valve connects the water supply waterway to the pump waterway, and the upper electromagnetic three-way valve connects the pump waterway to the return port, thereby driving the pump. c Based on the signal from the temperature detection element, the suction port of the lower electromagnetic three-way valve is connected to the pump waterway, and the upper electromagnetic three-way valve connects the pump waterway to the return port, driving the pump and energizing the heater. . A hot water tank for a hot water flush toilet consisting of a control circuit that performs the above control.