Water Lubricated Screw Compressor
AssigneeHitachi Industrial Equipment Systems Co., Ltd.
InventorsFumio TAKEDA, Masayuki KASAHARA, Takehiro MATSUZAKA, Tsutomu NOZAKI, Hideharu TANAKA
Life of this patent
Estimating the term…
Abstract
In a water-supply line for performing water-supply to the rotors and the mechanical seal of a compressor, or in a condensed-water collection line for collecting condensed water of a dryer into the inlet port of the compressor, a water reservoir is provided at a position higher than the water-supply unit of the compressor. Moreover, there are provided a start-time water-supply line and a solenoid valve set up therein. Here, the start-time water-supply line establishes the connection between the lower portion of the water reservoir, and the inlet port of the compressor and the water-supply unit of the mechanical seal.
Claims4
A water-lubricated screw compressor, comprising:
- a single pair of male/female resin screw rotors, both ends of said resin screw rotors being supported by bearings, clearance between discharge-side end surface of each of said resin screw rotors and a discharge-side bearing chamber being sealed by a mechanical seal, said resin screw rotors being contained inside a casing equipped with an inlet port and a discharge port;
- a water-supply line for supplying water into a compression chamber of said screw compressor and a slide part of said mechanical seal, said water being retained into a water tank inside a water separator;
- and
- a discharge stream line for establishing connection between said discharge port and said water separator;
- wherein
- said water-lubricated screw compressor further comprises:
- a water reservoir provided at a position higher than water-supply position of said screw compressor halfway in said water-supply line;
- an entrance line and an exit line into/from said water reservoir, said entrance and exit lines being provided on upper surface of upper portion of said water reservoir;
- a start-time water-supply line provided at lower portion of said water reservoir, said the start-time water-supply line being connected to said inlet port of said screw compressor and water-supply unit of said mechanical seal;
- and
- a solenoid valve provided halfway in said start-time water-supply line.
A water-lubricated screw compressor, comprising:
- a single pair of male/female resin screw rotors, both ends of said resin screw rotors being supported by bearings, clearance between discharge-side end surface of each of said resin screw rotors and a discharge-side bearing chamber being sealed by a mechanical seal, said resin screw rotors being contained inside a casing equipped with an inlet port and a discharge port;
- a water-supply line for supplying water into a compression chamber of said screw compressor and a slide part of said mechanical seal, said water being retained into a water tank inside a water separator;
- a discharge stream line for establishing connection between said discharge port and said water separator;
- and
- a discharge line connected to an upper-portion space of said water separator, and connected to a discharge line of compressed air after passing through a dryer, said water and said compressed air inside said water separator being separated from each other said upper-portion space;
- wherein
- said water-lubricated screw compressor further comprises:
- a condensed-water collection line for establishing connection between said dryer and said inlet port of said screw compressor;
- a water reservoir provided at a position higher than water-supply position of said screw compressor halfway in said condensed-water collection line;
- an entrance line and an exit line into/from said water reservoir, said entrance and exit lines being provided on upper surface of upper portion of said water reservoir;
- a start-time water-supply line provided at lower portion of said water reservoir, said the start-time water-supply line being connected to said inlet port of said screw compressor and water-supply unit of said mechanical seal;
- and
- a solenoid valve provided halfway in said start-time water-supply line.
Dependencies are inferred from the claim text.