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AssigneeOTTO EGELHOF GmbH & Co. KG
InventorsJoan Aguilar, Rainer Maurer, Markus Nagel, Jean-Jacques Robin, Kai Schauwecker
Estimating the term…
Switching valve for controlling a mass flow in a cold or hot circuit. The valve includes a valve housing having a feed opening and a discharge opening; a valve piston which has a valve-closure member directed towards the discharge opening and which, in a closed position, abuts a valve seat of a through-bore between the feed opening and the discharge opening; a pilot valve having a pilot bore in the valve piston, which bore opens into the through-bore and traverses the valve piston; a path-generating device having an actuatable ram accommodating a closure member which closes the pilot bore and, with the closure member, can be moved into an opening position which opens the pilot bore; and a bypass duct formed between the feed opening and the pilot bore. At least one connection element forcibly transfers at least some of the stroke movement of the ram onto the valve piston.
Switching valve for the regulation of a mass flow in an air conditioning or heating circuit, having a valve housing which has a supply opening and a discharge opening, having a valve piston which has a valve closing member pointing towards the discharge opening and, in a closing position, adjoins a valve seat arranged on a through bore between the supply opening and the discharge opening, having a pilot valve opposite the valve closing member, said pilot valve having a pilot hole in the valve piston, said pilot hole flowing into the through bore and passing through the valve piston, having a path generation device which has an actuatable ram which receives a closing body that closes the pilot hole and is able to be transferred with the closing body into an opening position that releases the pilot hole, and having a bypass channel formed between the supply opening and the pilot hole, wherein at least one connection element is provided between the ram and the valve piston, said connection element transferring at least one part of a lifting movement of the ram forcibly onto the valve piston.
Switching valve for the regulation of a mass flow in an air conditioning or heating circuit, having a valve housing which has a supply opening and a discharge opening, having a valve piston which has a valve closing member pointing towards the discharge opening and, in a closing position, adjoins a valve seat arranged on a through bore between the supply opening and the discharge opening, having a pilot valve opposite the valve closing member, said pilot valve having a pilot hole in the valve piston, said pilot hole flowing into the through bore and passing through the valve piston, having a path generation device which has an actuatable ram which receives a closing body that closes the pilot hole and is able to be transferred with the closing body into an opening position that releases the pilot hole, and having a bypass channel formed between the supply opening and the pilot hole, wherein the valve piston comprises a first guide section in the region of the pilot hole and a second guide section opposite and spaced apart from the first guide section.
Dependencies are inferred from the claim text.