Screw compressor
AssigneeGea Refrigeration Germany GmbH
InventorsOle Fredrich, Ottomar Neuwirth, Stefan Losch
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Abstract
A screw compressor, in particular for refrigeration systems, comprising a compressor housing (1) which at least partly encloses the compressor, an integrated suction gas filter (2) and a non-return valve (7) that is to be actuated by pressurized gas; the compressor housing (1) has grooves, in particular drilled or cast ducts (13, 16 22, 23, 24) to which pressurized gas can be fed in order to control the non-return valve (7).
Claims15
A screw compressor, in particular for refrigerating plants, which has a compressor housing which at least partially houses the compressor and is sealingly closed with a removable cover, comprising an integrated non-return valve in the suction line of the compressor, a valve being integrated into the housing of the compressor,
- wherein the removable cover includes a duct that receives a valve rod connected to the non-return valve, the non-return valve is a valve actuated with pressurized gas from an open state to a closed state to close the suction line, the pressurized gas being supplied to the duct in which the valve rod is received, and the compressor housing possesses a supply duct that includes a plurality of ducts defined in the compressor housing to supply the pressurized gas to the duct in which the valve rod is received, the supply duct receiving the pressurized gas for the actuation of the non-return valve from the open state to the closed state, wherein the valve is moved from a closed state to an open state by gas from the suction line, and wherein the valve rod is not biased with a spring.
Dependencies are inferred from the claim text.