| 摘要 |
<p>907,576. Aerating liquids. REGIE NATIONALE DES USINES RENAULT. Nov. 17, 1959 [Nov. 28, 1958], No. 38965/59. Class 14 (1). [Also in Group XXVI] A device for metering and aerating a liquid includes a distributer block 1 having a slide face 5 and having formed therethrough a gas passage 3 opening in the face 5 and a passage 2 for pressurized liquid opening in the face 5 adjacent the gas passage; a slide 6 engaging the slide face, the slide having a chamber 7 which communicates with the gas and liquid passages and in which the liquid can be aerated, gas being projected, during operation, into chamber 7 at least in part by the kinetic energy of the liquid passing into chamber 7, the chamber having a circular cross-section and tapering at least over part of its axial length towards an outlet orifice in the slide; and positioning means for adjustably positioning the slide relatively to the distributer block for varying the quantity of liquid to be delivered to chamber 7. As shown, the positioning means comprises grooves 11, 12 parallel to the face 5 formed on the slide's lower and upper edges, these grooves being engaged by knife-edged blades 13, 14 extending in a plane parallel to the slide-face, blade 13 being responsive to a tension spring 15 exerting a predetermined pressure, and blade 14 being responsive to the pressure of a control lever 20 associated with an adjustment screw 22. The crosssectional area of the liquid orifice 4 is altered by moving the screw 22 up or down. If the pressure in the manifold 28 is less than atmospheric liquid under pressure in passage 2 is forced against the side of chamber 7 and reflected through the nozzle 10, gas at the same time being drawn through passage 3. If the pressure in the manifold is atmospheric (open throttle) only the liquid passing through the nozzle 10 will draw a small quantity of gas from passage 3. The liquid jet orifice 4 may have a circular, triangular, or oblong shape. The chamber 7 may be bulbous shape, oblique frusto-conical shape, or in the shape of a large convergent cone followed by a small divergent one. Specification 866,414 is referred to.</p> |
