SU1444565A1 - Jet-type approach transducer - Google Patents

Abstract

The invention relates to inkjet technology. The jet proximity sensor includes a housing 1 and an insert 4, between which a half-ring gap 6 is formed, forming a working nozzle, and is an annular sensor truncated along a plane passing through its axis and provided with a flat base 5. This allows placing the sensor on a flat surface on which the object under test 12 is of very small size, which significantly expands the functionality of an approximate inkjet sensor. 2 or 5

Description

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This invention relates to automatic control and can be applied to jet pneumatic automation systems.

The aim of the invention is to extend the functionality of the proximity sensor.

Fig. 1 shows an approximation jet sensor, a section by a plane passing through the axis of the working nozzle and perpendicular to the base; Fig. 2 is the same, viewed from the side of the measurement object.

The jet proximity sensor consists of a hollow body 1, having a half cylinder of a half cylinder with an inlet 2, B- where shtucher 3 is located for supplying fluid supply pressure, the insert 4 also has a semi-cylindrical shape and a flat base 5. The insert 4 forming the half-ring with body 1 the gap 6, is provided with a manifold 7 also of a semi-circular section for supplying fluid supply pressure to the working nozzle, the flow part of which is formed by semi-annular. a gap 6, and a channel 8 with an outlet 9, in which the output channel is located - a nozzle 10 for outputting an output signal. The housing 1 and the liner 4 are connected with the base 5 along the forming, bounding them cylindrical surface.

The jet proximity sensor operates as follows. The device with a flat base 5 is mounted on the plane 11, on which the measurement object 12 is located.

When the supply pressure is fed into the opening 2, a working medium begins to flow out through the working nozzle formed by the semi-annular gap 6, which forms a thin jet 13 of semi-annular cross section. The stru 13 forms a swirling vortex cavity 14 bounded by the jet body 13 on one side and 11, and the pressure in this cavity is below zero. When this occurs, the focusing of the jet. The distance from the front end plane of the sensor to the focus of the jet 13 is in the order of 1.5-2 radii of the working nozzle.

From the front edge of the object 12, a reflected flow 15 occurs, which flows along the plane 11 to the output channel 8. At the same time, the pressure in the output channel increases,

Formula of the invention

An inkjet proximity sensor, comprising a hollow body, an output channel, an insert, located in a housing with a gap, forming a working nozzle connected through a manifold in the insert with a power nozzle, characterized in that it is equipped with a flat base, to expand its functionality, the housing and the liner are made in the form of semi-cylinders mounted on a base with a flat surface passing through the axes of the semi-cylinders, the axis of the output channel is aligned with the axis of the liner, and the collector and working nozzle are semi-annular and,

Claims (2)

Claim 25 Inkjet proximity sensor comprising a hollow body, an output channel, an insert located in the body with a gap forming a working nozzle connected through a collector 3Q in the insert with a power fitting, characterized in that, in order to expand the functionality, it is provided with a flat base, the housing and the insert are made in the form of half cylinders mounted on the base with a flat surface passing through the axes of the half cylinders, the axis of the output channel is aligned with the axis of the insert and the collector and working nozzle are made semi-40 Figure 2