Pressure-equalizing control

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 17/22 (2006.01) F16K 11/00 (2006.01) F16K 31/68 (2006.01) G05D 23/13 (2006.01)

Patent

CA 2251046

In order to improve a device for equalizing the pressure of two liquid flows, in particular a cold-water flow and a hot-water flow, with two separate inlet and outlet openings, in which the two flows act on a diaphragm that is secured by its outer edge within the housing, in order to detect a pressure difference, a sleeve that is secured so as to be spaced away from the outer edge of the membrane being provided as a control element on two pipe connector pieces that are mirror images of each other and incorporate fluid inlet openings and is axially displaceable and sealed on these, with each acting through one end area with a choke-valve seat that is formed on the pipe connector pieces, provision is made such that the diaphragm is arranged on the inner area between the faces of the two pipe connector pieces that face each other so as to be sealed between them, the sleeve being secured in the middle area, concentrically with each half, on both sides of the diaphragm.

Pour améliorer un dispositif d'équilibrage de la pression de deux écoulements liquides, en particulier un écoulement d'eau chaude et un écoulement d'eau froide, comprenant deux orifices distincts d'entrée et de sortie, et dans lequel dispositif les deux écoulements exercent une pression sur un diaphragme fixé par la bordure extérieure, à l'intérieur du logement et pour détecter une différence de pression, l'invention décrit un manchon à distance du bord extérieur de la membrane devant servir d'élément de contrôle sur deux raccords symétriques de tuyau, lesquels comprennent des orifices d'entrée du fluide. Le manchon peut se déplacer dans un sens axial et est scellé sur les raccords, chacun étant muni à une extrémité d'un siège de soupape d'étranglement formé sur le raccord. Selon l'invention, le diaphragme est placé sur la partie intérieure entre les faces des deux raccords de tuyau placés l'un en face de l'autre de façon à ce que le diaphragme soit scellé entre eux. Le manchon est fixé dans la zone intermédiaire, de façon concentrique par rapport à chaque moitié, sur les deux côtés du diaphragme.

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