# US 2014/0193284 A1 · Air regulator, in particular for screw compressors > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0193284 A1 - Document ID: US20140193284A1 - Status: Published application - Kind: A1 - Application number: 14/009,175 - Filed: 2012-03-30 - Published: 2014-07-10 - Earliest claimed: 2011-04-01 - Assignees: Rotorcomp Verdichter GmbH - Inventors: Enrico Stephan - Web page: https://patentgrep.com/patent/US20140193284A1 ## CPC - F04C 29/124: {with inlet and outlet valves specially adapted for rotary or oscillating piston pumps} - F04C 18/16: with helical teeth, e.g. chevron-shaped, screw type {(for non-parallel axes of movement F04C18/48)} - F04C 28/06: specially adapted for stopping, starting, idling or no-load operation - F04C 28/24: characterised by using valves controlling pressure or flow rate, e.g. discharge valves {or unloading valves}(F04C28/10 takes precedence) - F16K 31/1221: {one side of the piston being spring-loaded} - F16K 31/1223: {one side of the piston being acted upon by the circulating fluid} - F04C: ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} ## Abstract An air regulator for compressor, in particular for a screw compressor, of the type that has an oil separator device comprising a pre-separator, is provided in a regulator housing containing a valve element which is spring-loaded on one side and can be actuated by means of a piston arrangement. A control device is operatively connected to the air regulator and includes a control piston which, depending on the pre-separator pressure, actuates the valve element of the air regulator in co-operation with a pre-control device in such a way that the regulator immediately and forcibly assumes the closed position upon starting the compressor, while the regulator assumes the open position in an unloaded initial state. ## Claims ### Claim at position 1 1-9. (canceled) ### Claim 10 An air regulator for compressors, comprising: an oil separator apparatus with a pre-separator, a regulator housing, a valve element in said regulator housing, the valve element being spring-loaded on one side, a piston arrangement for actuating the valve element, pilot control apparatus, and a control apparatus containing a control piston, wherein the control piston, depending on a pre-separator pressure, in interaction with the pilot control apparatus actuates the valve element such that, when a compressor to which the regulator is connected is started, the regulator is immediately forced to assume a closed position, while in a base state the regulator assumes an open position. ### Claim 11 (depends on 10) The air regulator as claimed in claim 10, wherein the air regulator is adapted for being triggered in at least one of a pneumatic and electrical manner. ### Claim 12 (depends on 10) The air regulator as claimed in claim 10, wherein the air regulator is adapted for being triggered pneumatically, and the control apparatus contains a check valve between control medium and pre-separator medium areas. ### Claim 13 (depends on 10) The air regulator as claimed in claim 10, wherein the pilot control apparatus comprises a valve magnet. ### Claim 14 (depends on 10) The air regulator as claimed in claim 10, wherein the control apparatus is fastened directly on the regulator housing. ### Claim 15 (depends on 10) The air regulator as claimed in claim 10, wherein the control apparatus is in communication with the piston arrangement for loading of the valve element and a relief apparatus. ### Claim 16 (depends on 10) The air regulator as claimed in claim 10, wherein a diversion apparatus is integrated into the regulator housing. ### Claim 17 (depends on 16) The air regulator as claimed in claim 16, wherein the diversion apparatus comprises a diversion nozzle which in the regulator housing and which discharges directly via a bore into an intake space. ### Claim 18 A regulated compressor arrangement, comprising: a compressor, and an air regulator connected to said compressor, wherein the air regulator comprises: an oil separator apparatus with a pre-separator, a regulator housing, a valve element in said regulator housing, the valve element being spring-loaded on one side, a piston arrangement for actuating the valve element, pilot control apparatus, and a control apparatus containing a control piston, wherein the control piston, depending on a pre-separator pressure, in interaction with the pilot control apparatus actuates the valve element such that, when the compressor to which the regulator is connected is started, the regulator is immediately forced to assume a closed position, while in a base state the regulator assumes an open position. ### Claim 19 (depends on 18) The air regulator as claimed in claim 18, wherein air regulator is integrated in a compressor housing of the compressor. ### Claim 20 (depends on 18) The air regulator as claimed in claim 18, wherein the compressor is a screw compressor.