CONTROL VALVE FOR AIR CONDITIONERS

摘要

Disclosed is a control valve for air conditioners, particularly a thermal expansion valve for air conditioning units in vehicles, comprising a housing that is provided with a fluid inlet, a fluid outlet, a fluid channel which connects the inlet to the outlet and encompasses a flow-through orifice that has a given flow diameter, a regulating element which is disposed on one side of the flow-through orifice, has a larger diameter than the flow-through orifice and is movable back and forth relative to the flow-through orifice, the back-and-forth movement of said regulating element modifying the diameter of the opening of the flow-through orifice, and a thermally controlled actuation device moving the regulating element relative to the flow-through orifice, particularly via a transmitting pin which acts on the regulating element. Said control valve also comprises means which are actuated independently of the thermally controlled actuation device, particularly in an arbitrary manner, and through which the regulating element can be brought into a relative position to the flow-through orifice in which the regulating element seals the flow-through orifice.