JPH0461137B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a water spray device, a cleaning device, and particularly a jet flow switching device used in a fluid ejecting device such as a human body private parts cleaning device, and a cleaning device.

BACKGROUND TECHNOLOGY As shown in FIG. 6, a conventional injection flow switching device of this type has electromagnetic valves 3 and 4 disposed upstream of a first nozzle 1 and a second nozzle 2, respectively, and is controlled separately. This electromagnetic valve controlled the switching of the jet flow.

Problems to be Solved by the Invention However, with the above configuration, unbalance during control, for example, water hammer may occur due to simultaneous closing of solenoid valves, resulting in equipment damage, and the use of two solenoid valves increases costs. It had a number of problems.

The present invention is intended to solve these conventional problems, and aims to ensure that even when switching injection nozzles, pressure fluctuations in the flow path system can be reduced and the switching can be performed reliably.

Means for Solving the Problems In order to solve the above problems, the injection flow switching device of the present invention includes a first injection nozzle to which fluid is supplied by opening and closing an on-off valve, and a first injection nozzle that is branched from upstream of the on-off valve to which fluid is supplied. A parallel flow path consisting of a supplied second injection nozzle and a pressure-operated valve disposed upstream of the second injection nozzle, and a parallel flow path that branches from upstream of the first injection nozzle and transmits pressure to the pressure-operated valve. The structure includes a signal tube for transmitting signal pressure.

Effects According to the present invention, with the above configuration, when one of the injection nozzles arranged in parallel opens the on-off valve to allow water to flow into the jet jet state, the other injection nozzle has a pressure-operated valve downstream of the on-off valve. The pressure generated in the cylinder causes the valve to close and become non-injecting. Conversely, when the on-off valve is closed to stop water flow and one nozzle is in a non-injection state, the other injection nozzle opens the pressure-operated valve and enters the jet injection state because the downstream pressure of the on-off valve drops to atmospheric pressure. Become. As described above, two nozzles can be switched using one on-off valve.

Embodiment An embodiment of the jet flow switching device of the present invention will be described below with reference to FIG.

In FIG. 1, 14 is a solenoid valve, 15 is a pressure-operated valve operated by signal pressure taken out from a position downstream of the solenoid valve 14, 16 is a signal pipe for transmitting signal pressure, 1
7 is a washing water pressure pump, 18 is a hot water tank, 1
9 is cistern.

FIG. 2 shows an example in which this jet flow switching device is applied to a toilet seat with a washer.

In FIG. 2, reference numeral 5 denotes the main body of the human body private parts washing device, which is installed on a toilet bowl 6 and is composed of a heated toilet seat 7 and a washing device unit 8. The washer unit 8 has a power switch knob 9. Flow rate adjustment knob 10. A nozzle switching switch knob 11 is attached. 1
2 is the first injection nozzle for cleaning the anus. 13 is a second injection nozzle for bidet cleaning.

3, 4, and 5, reference numeral 20 denotes a diaphragm with a valve body 21 integrally formed therein. 22 is the valve seat. 23 is an inflow channel. 24 is an outflow path. A diaphragm chamber 25 has a signal pressure inlet 26 at its upper part. 27 is a spring for biasing the diaphragm 26.

In the above configuration, the power is turned on using the power switch knob 9 of the washer unit 8. First of all
In the case of anal cleaning using a spray nozzle, the solenoid valve 14 is turned on using the nozzle switching switch 11, the starting rotation speed of the pump 17 is adjusted using the flow rate adjustment knob 10, and the flow rate value is set. pump 17
The hot water pressure-fed passes through a branch section and a solenoid valve 14, and is injected from a first injection nozzle 12. At this time, the pressure operated valve 15 operates as shown in FIG. That is, the pressure on the downstream side of the electromagnetic valve 14 is transmitted to the diaphragm chamber 25 of the pressure-operated valve 15 from the signal pressure inlet 26 via the signal pipe 16. The diaphragm 20 is urged toward the valve seat 22 by this pressure, the valve body 21 comes into close contact with the valve seat, and the flow of hot water forced from the branch is stopped. As a result, the hot water pumped from the pump 17 is injected only from the first injection nozzle 12.

Next, when cleaning with the second injection nozzle 13,
The solenoid valve 14 is turned off using the nozzle changeover switch 11, and the flow rate value is set using the flow rate adjustment knob 10 in the same manner as described above. Since the solenoid valve 14 is off, the hot water pumped by the pump 17 does not flow to the first injection nozzle side but flows to the second injection nozzle 13 side. At this time, the pressure operated valve 15 operates as shown in FIG. That is, the pressure on the downstream side of the solenoid valve 14 is atmospheric pressure, so the pressure in the diaphragm chamber 25 is also atmospheric pressure, and the biasing force due to the pressure of the diaphragm 20 does not work, and only the spring 27 has a weak force, and the valve body 21
The hot water is pushed up by the pressure of the hot water pumped by the pump, and the hot water flows toward the outflow path 24.

As a result, the hot water pumped from the pump 17 is
The injection is from only the second injection nozzle 13.

In the above configuration, by integrating the diaphragm and the valve body, the pressure response of the valve body is good, the effective pressure receiving surface is large, the valve closing force is expanded, and the closing performance is improved.

Effects of the Invention As described above, the jet flow switching device of the present invention provides the following effects.

(1) The pressure generated when one two-way valve opens and closes opens and closes the other valve. Therefore, simultaneous complete closure of the branch channels is eliminated, water hammer is prevented from occurring, and damage to the pressure supply source such as a pump can be prevented.

(2) Two-way switching is possible with one on-off valve, making the switching device compact and at low cost.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a jet flow switching device according to an embodiment of the present invention, Fig. 2 is a perspective view of a cleaning device using the same jet flow switching device, and Fig. 3 is a diagram of a pressure-operated valve of the jet flow switching device. 4 is a sectional view showing the operating state of the same pressure-operated valve when the first nozzle is injecting, FIG. 5 is a sectional view showing the operating state when the second nozzle is injecting the same pressure-operated valve, and FIG. It is a principle block diagram of a conventional jet flow switching device. 12...First injection nozzle, 13...Second injection nozzle, 14...Solenoid valve, 15...Pressure operated valve, 2
0...Diaphragm, 21...Valve body.

Claims (1)

[Scope of Claims] 1. A first injection nozzle to which fluid is supplied by opening and closing an on-off valve, a second injection nozzle to which fluid is supplied by branching from upstream of the on-off valve, and an area upstream of the second injection nozzle. A jet flow switching device comprising a flow path comprising a pressure-operated valve disposed in the first injection nozzle, and a signal pressure transmission signal pipe branching from the upstream of the first injection nozzle and transmitting pressure to the pressure-operated valve. 2. Claim 1, wherein the pressure-operated valve is constituted by a diaphragm chamber connected to a signal pipe for transmitting signal pressure, and a diaphragm valve attached to the diaphragm chamber and having a valve body disposed on the side opposite to the diaphragm chamber side. The jet flow switching device described.