FILTRO DE CARBURANTE CON UNA VALVULA INTEGRADA DE REGULACION DE LA PRESION

UN FILTRO DE COMBUSTIBLE CON VALVULA REGULADORA DE PRESION (11) INTEGRADA DEBE TENER UN DISEÑO SENCILLO Y ECONOMICO, Y LA VALVULA REGULADORA (11) NO DEBE DAR PROBLEMAS DE FUNCIONAMIENTO. PARA ELLO, EL FILTRO QUE PROPONE LA INVENCION PRESENTA LAS CARACTERISTICAS SIGUIENTES: LA VALVULA REGULADORA DE PRESION (11) TRABAJA DIRECTAMENTE CONTRA LA PRESION ATMOSFERICA COMO PRESION DE COMPARACION, ESTA INTEGRADA EN UNA PRIMERA ZONA DE LA PARED FRONTAL DEL FILTRO (JUNTO CON UN RACOR DE SALIDA (10)), SE INUNDA CON EL CARBURANTE DEPURADO Y SE ENCUENTRA ALOJADA EN EL EJE DEL FILTRO. EN LA SEGUNDA ZONA DE LA PARED FRONTAL DEL FILTRO SE ENCUENTRAN UN RACOR DE ALIMENTACION (9) Y OTRO DE RETORNO (6), ESTE ULTIMO EN POSICION CENTRAL. LA ZONA DE LA VALVULA REGULADORA (11) QUE ABRE EL RETORNO DE COMBUSTIBLE SE COMUNICA CON EL RACOR DE RETORNO (6) MEDIANTE UN CANAL DE CIRCULACION DE RETORNO (22) QUE PASA POR EL CENTRO DEL FILTRO. EL RACOR DE RETORNO (6) PASA POR EL CENTRO DE UN DISCO (5) SITUADO EN EL EXTREMO DEL ELEMENTO FILTRANTE (3). PARA ELLO, DICHO DISCO PRESENTA UNA JUNTA RADIAL EN SU CENTRO. PCT No. PCT/DE96/01064 Sec. 371 Date Dec. 29, 1997 Sec. 102(e) Date Dec. 29, 1997 PCT Filed Jun. 11, 1996 PCT Pub. No. WO97/01705 PCT Pub. Date Jan. 16, 1997A fuel filter with a pressure regulating valve for fuel circulated from a fuel tank and injected into an internal combustion engine. The fuel filter comprises a filter pot closed by a cover and an annular filter element for radially filtering flow from the outside in. Fuel flows in and out through main flow connections on opposite sides of the filter. There is a recirculation connection to recirculate fuel. There is a pressure regulating valve on one end of the filter housing with the discharge connection. The pressure regulating valve operates against atmospheric pressure and has a spring-loaded diaphragm which acts in conjunction with a closure ram to close the inlet port of a recirculation flow duct which passes through the center of the filter and connects the regulating valve to the return connection. The diaphragm is fastened with the valve seat in a sealed manner to the edge of the pressure regulator housing, which open into the filter port and is formed in the cover of the filter housing. The return connection passes in a radially sealed manner through the center of an associated end disk of the filter element. The feed connection and the return connection are provided in a second end of the filter and the pressure regul