Tyco Fire + Security Gmbh

York (Wuxi) Air Conditioning and Refrigeration Company, Ltd.

Johnson Controls Air Conditioning and Refrigeration (Wuxi) Co., Ltd.

Johnson Controls Tyco IP Holdings LLP

Zhengxiang Yu

Li Wang

Shengmei Yang

Fengzhi Zhang

Fanfei Zeng

Yu Zhu

Kun Lin

Disclosed is a screw compressor (), comprising a screw compressor housing (), a discharge cavity (), at least one silencing channel, and at least one adjustment piston, wherein the discharge cavity () is defined by at least one part of the screw compressor housing (); the at least one part of the screw compressor housing () defining the discharge cavity () forms a wall of the discharge cavity (); at least one hole is provided in the wall of the discharge cavity (); the at least one adjustment piston can be inserted into the at least one hole and move therein; the at least one silencing channel is formed by the at least one hole and the at least one adjustment piston, and the at least one silencing channel is in fluid communication with the discharge cavity (); and the position of the at least one adjustment piston in the at least one hole determines the silencing length of the at least one silencing channel.

Screw compressor, refrigeration system, and method for controlling refrigeration system

A screw compressor (), comprising a screw rotor () and a spool valve (). The screw rotor () comprises a suction head end () and an exhaust tail end (). Gas is sucked in from the suction head end () and compressed gas is discharged from the exhaust tail end (). The spool valve () comprises a working side () for sealing a compression chamber of the screw rotor (). The working side () comprises a spool valve head end () and a spool valve tail end () and can do a reciprocating motion along the axis direction of the screw rotor (). When the spool valve () moves to a suction capacity adjusting position (), the spool valve head end () is located at the inner side of the suction head end () of the screw rotor (), and a suction capacity adjusting distance (D) is formed between the spool valve head end () and the suction head end () so that the suction capacity of the screw compressor is adjusted. The suction capacity of the screw compressor () can be adjusted by means of the spool valve (), so that the problem of motor temperature and exhaust gas temperature limits of conventional variable frequency screw sets is effectively solved and the operational range and the load regulation ability of the screw compressor are expanded.

Screw compressor and control method therefor

Growing community of inventors

Wuxi, China

Zhengxiang Yu