Robert Boschgmbh

Rob Hickey

Thomas Helming

Haixiang Wang

Armen Davtyan

Thomas Demmer

The invention relates to a valve (), in particular an expansion valve, for controlling fluid flow, having a valve central housing () having a first and a second opening () and a valve element () which has a rotationally symmetrical outline and is arranged rotatably within the valve element housing (). According to the invention, the valve element () has a cut-out, wherein the cut-out () has a variable dimension, and a sub region () of the cutout () is formed continuously through the valve element ().

Valve for controlling a fluid flow

An environmental control unit, such as an HVAC or heat pump unit, includes an insert disposed within the device housing that provides noise attenuation features. The insert defines air flow paths within the housing. The insert may be formed of a foam material and may include multiple foam blocks that cooperate to form a serpentine passageway therein. The passageway includes multiple turns. The features further include perforated sheet metal panels disposed in the passageway at strategic locations. The perforations are shaped and dimensioned to correspond to the frequencies to be attenuated.

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Concord, NH, United States of America

Rob Hickey