Partition means for directing air flow over a cooler in an oilless scroll compressor

An oil-free scroll compressor comprising:

• an oil-free compressor scroll element including an orbiting scroll and a stationary scroll;
• a motor for driving said scroll compressor element;
• a cooler for cooling an operation gas compressed by said compressor element;
• a cooling fan for blasting cooling air subjected to heat-exchange with said operation gas by said cooler;
• and
• a casing for accommodating said compressor scroll element, said motor, said cooler, and said cooling fan;
• wherein said motor and said scroll compressor element are disposed in a stratified arrangement, and said cooling fan and said cooler are disposed in a stratified arrangement,
• wherein said cooler is disposed on a discharge side of said cooling fan, and is cooled only by said cooling air, and
• wherein said scroll compressor element is provided is directly exposed to cooling air in said casing.

An oil-free scroll compressor comprising:

• an oil-free scroll compressor element;
• a double-end motor;
• a cooler cooled by a cooling fan;
• said cooling fan fitted to an end of said double-end motor, and said scroll compressor element driven by an opposite end of said double-end motor;
• a duct providing communication between a suction side of said cooling fan and said scroll compressor element;
• an exhaust duct with said cooler disposed on a discharge side of said cooling fan;
• wherein said cooler is cooled only by cooling air from said cooling fan, and wherein said scroll compressor element is directly exposed to cooling air.

An oil-free scroll compressor comprising:

• a casing;
• a double-end motor mounted at a bottom of the casing;
• an oil-free scroll compressor element mounted in the casing above the motor, the oil-free scroll compressor element comprising a pair of stationary scrolls, an orbiting scroll mounted between the pair of stationary scrolls, and at least one crank shaft for imparting an orbiting motion to the orbiting scroll, each of the stationary scrolls having an inner surface on which is provided a spiral wrap and an outer surface on which are provided a plurality of fins, the orbiting scroll having an end plate and spiral straps provided on both sides of the end plate;
• a pulley for transmitting power from one end of the double-end motor to the at least one crank shaft;
• a cooler for cooling an operation gas compressed by the oil-free scroll compressor element;
• a cooling fan for blasting cooling air subjected to heat-exchange with the operation gas inside said cooler, the cooling fan being mounted on another end of the double-end motor;
• at least one suction port provided in the casing for inflow of cooling air into the casing;
• at least one discharge port provided in the casing for discharging cooling air from the casing;
• a suction flow passage provided between the at least one suction port and the cooling fan, the oil-free scroll compressor element being provided in a portion of the suction flow passage, the cooling fan sucking cooling air from the at least one suction port and downwardly through the fins provided on the stationary scrolls of the oil-free scroll compressor element to the cooling fan;
• and
• a discharge flow passage provided between the cooling fan and the at least one discharge port, the cooler being provided in a portion of the discharge flow passage, the cooling fan forcing cooling air from the suction flow passage, upwardly past the cooler and out the discharge port.