JPS60215112A - Water jetting equipment - Google Patents

Abstract

PURPOSE:To control a flow pattern of a jet of water, by constructing a water jetting equipment with a feed nozzle, attachment walls, two-phase fluid oscillator element, a liquid compressively sending pump, and an air inflow control unit with which air pressure is led by the pull of the pump. CONSTITUTION:An air inflow control unit 24 and a hot-water tank 25 are connected to the intake side of a fluid compressively sending pump 23, and a washing nozzle 27 is connected to the outflow side of the pump 23 through a flow regurating valve 26. A jet send from a feed nozzle and passed between walls 12, 13 is controlled by switching the air inflow control unit 24, and a non-oscillatory fixed jet flow pattern and an oscillatory jet flow pattern become exchangeable for each other. Accordingly, as an oscillation control in a fluidics can be performed through a main flow route, it is easy to control remotely.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a spraying device such as a washing device for washing dishes, a human body, etc. by spraying washing water, and a water sprinkling device for melting snow.

Structure of the conventional example and its problems As shown in Figs. 1 and 2, the conventional cleaning injection device has a self-oscillating pure fluid element at the tip of a movable cylinder 2 that slides on the inner cylindrical surface of a fixed cylinder 1. 3 is installed.

As shown in FIG. 2, the oscillation type pure fluid element 3 is provided with a control flow path leading from the output flow path 4.4' to the control port 5.5' on the opposite side, and the oscillated low pressure is transmitted to the output flow path 4.4'. Depending on the nozzle/L
The jet stream ejected from /6 automatically switches and performs self-oscillation. In the conventional configuration described above, it is not possible to control the oscillation and stop of the pure fluid element using an external signal, and the jet flow is always an oscillating jet pattern that spreads out in a fan shape. Therefore, when used in a cleaning device or the like, it has been impossible to perform cleaning with a highly directional jet flow pattern, that is, powerful cleaning.

Purpose of the Invention The present invention solves the above-mentioned conventional problems.
The purpose of this is to enable the jet flow pattern ejected from the nozzle to be changed depending on the purpose of use.

Structure of the Invention In order to achieve the above object, the present invention provides a liquid pressure pump on the upstream side of a two-phase fluid oscillation element consisting of a supply nozzle and an attached wall, and a pump on the suction side of the mJ pump. The structure includes a gas inflow control means for introducing gas at a suction pressure of . With this configuration, the two-phase fluid oscillation element can be switched between oscillation and non-oscillation by controlling the gas inflow from the gas inflow control means.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 to 8.

In FIGS. 3 and 4, 7 is a two-phase fluid oscillation element for generating a jet flow, which is installed at the tip of a movable cylinder 9 that inserts the inner cylindrical surface of a fixed cylinder 8 by the action of water pressure and a spring. ing. Reference numeral 10 denotes a spring for retracting the movable cylinder 9 into the fixed cylinder 8 when no pressure is applied by the supply fluid. The liquid oscillation element 7 is the supply nozzle 1
1 left and right side walls 12, 13, and an outlet 14 formed by the open ends of the side walls, and the flow path has a two-dimensional structure restrained by the upper and lower surfaces. The cleansing toilet seat main body 15 is installed on the toilet bowl 16 and is composed of a heated toilet seat 17 and a washer unit 18. The washer unit 18 includes a power switch 19,
Flow rate adjustment knob 20, gas inflow control means operation knob 2
1 is installation.

22 is a toilet seat lid.

FIG. 5 shows the system configuration of the toilet seat ζ, especially the water circuit configuration. Reference numeral 23 denotes a liquid pressure pump, to which a gas inflow control means 24 and a hot water tank 25 are connected on the suction side, and a cleaning nozzle/l/27 is connected to the discharge side via a flow rate regulating valve 26. The liquid pressure pump 23 is preferably a positive displacement pump that is stable even when gas flows in, and in this embodiment, a vane type pump is used. The inflow side of the hot water tank 25 communicates with a water storage tank 28 such as a cistern.

FIG. 6 shows the operating state of the two-phase fluid oscillation element 7 during steady injection, and FIGS. 7 and 8 show the operating state of the two-phase fluid oscillation element 7 during oscillating injection.

F2, F3 are jet flows, Vl, V2 are low pressure vortices, B1
.

B2. 'B3 indicates gas introduced from the outside.

The operation based on the above configuration will be explained below. During cleaning, the power source 19 is turned on and the flow rate is set using the flow rate adjustment knob 20. The movable cylinder 9 of the cleaning nozzle is pushed out by the water pressure of the liquid pressure pump 23, overcoming the force of the spring 10, and the second iδ body oscillation element 7 is set at the cleaning position. When the gas inflow restriction 1 means 24 is closed at this shaped portion, the fluid pumped from the liquid pump 7 donp 23 becomes a liquid flow containing no gas. This liquid stream flows through the supply nozzle 11
However, it ejects between 11 walls 12 and 13, but the jet and (all
Due to the Coanda effect that occurs between walls, either the left or right wall,
The wall on the side that detected the k constant state earlier (in Fig. 6, 11 below)
It lands +1 on wall 12) and flows out. The flow rate t of the monk 1 is ejected into the atmosphere from the aLSA port 14 (Fig. 61 F1)
. In addition, the adhesion of the jet flow depends on the shape and position of the side wall; IIE,
By making it the t+ name, it can be made to be on the fixed side.

Next, turn the operation knob 21 to
4 is opened to communicate with the atmosphere. Liquid pumping sr pump.

23 inhales air as well as water. Therefore, the fluid pumped from the one-liquid pressure pump 23 is in the atmosphere (Fig. 7B).
1) is mixed into a two-phase fluid. When the second left fluid enters the fluid element and is ejected from the supply nozzle/l'll, part of the mixed gas flows into the low pressure vortex part ■1 (Fig. 7B
2). The gas B2 that has flowed into the low-pressure vortex portion v1 destroys the low-pressure state of the vortex, making the adhesion of the jet flow F2 unstable. As a result, the jet flow F2 that had landed on the wall 12 separates from the wall 12.

Due to the change in inertia and pressure during this separation, the jet flow F2 adheres to the opposite wall 13, forming a low-pressure vortex ■2, and jets out into the atmosphere from the outlet 14 along the wall 13 (Fig. 8 F3 ). Thereafter, the above-described operation occurs on the wall 13, and the jet flow alternately arrives between the walls 12 and 13, forming an oscillating flow.

As described above, it is possible to change the non-oscillating fixed jet pattern and the oscillating jet pattern, and in the case of a cleansing toilet seat, the user can choose between strong cleaning and the order of washing the toilet, depending on the user's preference.

Effects of the Invention (1) Remote control is easy because oscillation control of the fluidic element can be performed via the main flow path.

2. The control signal is air flow, and the control is also the opening and closing of the air communication port, so reliability can be ensured even in places with poor environmental conditions, such as on a toilet seat.

◎ When used for cleaning, mixing gas into the jet will double the soft feel of the jet. Therefore, it is possible to perform soft cleaning with a low cleaning J value as low as possible.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional example, Fig. 2 is a sectional view of a fluid oscillation element showing a conventional example, Fig. 3 is an external view showing one embodiment of the fluid ejection device of the present invention, and Fig. 4 is the same as above. An enlarged cross-sectional view of the nozzle part, FIG. 5 is a synutem configuration diagram of the same cleaning device, FIG. 6 is a cross-sectional view showing the state of the jet flow of the two-phase fluid oscillation element,
FIGS. 7 and 8 are cross-sectional views showing the state of the jet flow when gas flows into the element. 7 ・Two-phase fluid oscillation element, 11 ... Supply nozzle, 1
2.13...adhesion wall, 14-...outlet, 23-
・Liquid pressure pump, 24... ・Gas inflow control means,
27...Cleaning nozzle. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Surface 44・ Fig. 4 1 5 Fig. 4 Fig. 6

Claims (1)

[Claims] (1) Supply nozzle, several walls installed downstream of the supply nozzle,
A two-phase fluid oscillation element composed of a jet flow outlet provided downstream of the attached wall, a liquid pressure pump provided upstream of the oscillation element, and a liquid pressure pump provided on the suction side of the pump, which introduces gas by the suction pressure of the pump. A fluid injection device comprising a gas inflow side control means. 2) The fluid injection device according to claim 1, wherein the liquid pressure pump is a positive displacement pump capable of simultaneously pumping liquid and gas.