Compressor and Refrigerating Cycle Apparatus

Abstract

In a conventional compressor, since a motor and a mechanical section of the compressor are disposed in one and the same closed container, the motor is exposed to high-temperature coolant and heated, and the efficiency of the motor is lowered. Further, during the operation of the compressor, the coolant circulating in the refrigerating cycle conveys additional heat generated by the motor coil. Thus the efficiency of the refrigerating cycle is lowered. The compressor according to the present invention includes a compression chamber divided into a closed chamber and an open chamber separated by a magnetic induction plate from each other. The closed chamber is filled with high temperature and pressure coolant and the rotor of the motor is disposed in the closed chamber, and the stator of the motor is disposed in the open chamber.

1 . A compressor comprising:
 an axial gap motor including a rotor and a stator; and   a coolant compression mechanism section disposed in a closed chamber and connected to the rotor of the axial gap motor via a crankshaft, wherein   the stator of the axial gap motor is disposed outside of the closed chamber, and the coolant compression mechanism section of the compressor is driven by magnetic induction therebetween.   
     
     
         2 . The compressor according to  claim 1 ,
 wherein one of the coolant compression mechanism sections disposed on one side of the stator is driven by magnetic induction.   
     
     
         3 . The compressor according to  claim 1 ,
 wherein two of the coolant compression mechanism sections disposed on both sides of the stator is driven by magnetic induction.   
     
     
         4 . The compressor according to  claim 1 ,
 wherein a nonmagnetic metal plate is provided between the stator and the rotor of the axial gap motor, and the nonmagnetic metal plate is welded to a casing of the compressor.   
     
     
         5 . The compressor according to  claim 4  further comprising:
 a plurality of small stator cores on both sides of a plane of the nonmagnetic metal plate, each projecting from either side of the plane of the magnet metal plate; and one or more magnetic inductors on the nonmagnetic metal plate, number and shape thereof being same as that of the small stator cores of the stator. 
 
     
     
         6 . The compressor according to  claim 4  further comprising:
 a plurality of small stator cores on both sides of a plane of the nonmagnetic metal plate, each projecting on either side of the plane of the magnet metal plate; and 
 a coil being disposed on one side of each of a plurality of the small stator cores. 
 
     
     
         7 . The compressor having an axial gap motor according to  claim 1 ,
 wherein the rotor is disposed on one side of end faces of the stator of the axial gap motor and an annular magnetic plate is disposed on the other side of end faces of the stator.   
     
     
         8 . A high pressure chamber compressor comprising:
 a motor including a rotor and a stator; and   a compression mechanism disposed in a compression chamber,   wherein   coolant is compressed by the compression mechanism via rotation of the rotor at high temperature and pressure, the coolant fills the compression chamber and is discharged thereafter,   the motor is an axial gap motor,   the compression chamber is partitioned into a closed chamber and an open chamber separated with a magnetic induction plate from each other, the closed chamber is filled with high temperature and pressure coolant and the rotor of the motor is disposed in the closed chamber, and the stator of the motor is disposed in the open chamber.   
     
     
         9 . The high pressure chamber compressor according to  claim 8 , wherein the magnetic induction plate includes:
 a nonmagnetic metal disc fixed on the compression chamber; and   a magnetic body transferring rotating flux from the stator to the rotor and press fitted into the nonmagnetic metal disc.   
     
     
         10 . The high pressure chamber compressor according to  claim 8 ,
 wherein the magnetic induction plate includes:   a nonmagnetic metal disc fixed on the compression chamber; and   a magnetic body constituting a part of the stator and press fitted into the nonmagnetic metal disc.   
     
     
         11 . A refrigerating cycle apparatus including the compressor according to  claim 1 , wherein coolant is circulated during a refrigerating cycle by operation of the compressor. 
     
     
         12 . A refrigerating cycle apparatus including the compressor according to  claim 2 , wherein coolant is circulated during a refrigerating cycle by operation of the compressor. 
     
     
         13 . A refrigerating cycle apparatus including the compressor according to  claim 3 , wherein coolant is circulated during a refrigerating cycle by operation of the compressor. 
     
     
         14 . A refrigerating cycle apparatus including the compressor according to  claim 4 , wherein coolant is circulated during a refrigerating cycle by operation of the compressor. 
     
     
         15 . A refrigerating cycle apparatus including the compressor according to  claim 5 , wherein coolant is circulated during a refrigerating cycle by operation of the compressor. 
     
     
         16 . A refrigerating cycle apparatus including the compressor according to  claim 6 , wherein coolant is circulated during a refrigerating cycle by operation of the compressor. 
     
     
         17 . A refrigerating cycle apparatus including the compressor according to  claim 7 , wherein coolant is circulated during a refrigerating cycle by operation of the compressor. 
     
     
         18 . A refrigerating cycle apparatus including the compressor according to  claim 8 , wherein coolant is circulated during a refrigerating cycle by operation of the compressor. 
     
     
         19 . A refrigerating cycle apparatus including the compressor according to  claim 9 , wherein coolant is circulated during a refrigerating cycle by operation of the compressor. 
     
     
         20 . A refrigerating cycle apparatus including the compressor according to  claim 10 , wherein coolant is circulated during a refrigerating cycle by operation of the compressor.