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US 7,849,600 B2Granted
Method of producing a valve arrangement for an expansion valve
AssigneeOtto Egelhof GmbH & Co. KG, Regelungstechnik
InventorsUta Andrä, Siegfried Roth, Albrecht Waldenburg, Jean-Jacques Robin, Ralf Winterstein, Klaus Kummerow
Life of this patent
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Abstract
The invention relates to a method of producing a valve arrangement and to a valve arrangement for an expansion valve, which is provided in a vehicle air conditioning system operated with refrigerant and has a basic opening in the valve seat, the cross section of this basic opening being produced for a predetermined mass flow by material removal.
Claims17
Method of producing a valve arrangement for an expansion valve, said valve arrangement being provided in a housing with a regulating space and comprising a conical valve seat;
- which is closed by a valve-closing member located in closed position and closing a passage opening which is provided between a first coolant inlet opening and a first coolant outlet opening of the housing, said valve arrangement further comprising a basic opening which connects the first coolant inlet opening and the first coolant outlet opening of the housing for a constant volumetric flow when the valve arrangement is closed, wherein the basic opening in the valve seat is provided by material removal and the basic opening is produced to extend from the conical valve seat to the passage opening.
Dependencies are inferred from the claim text.