Electric scroll compressor

Abstract

[Task] In an electric scroll compressor which includes a housing member in which a motor fixing portion and an end plate are integrated with each other, and in which a thrust load of a swing scroll is supported by the end plate, deformation of the end plate decreases. [Solution] In an electric scroll compressor in which stator contact portions 61 which come into contact with a stator 41 of an electric motor 4 and stator non-contact portions 62 which do not come into contact with the stator are alternately disposed in a circumferential direction on an inner circumferential wall of a motor fixing portion 6 a, a hole 63 is provided at a position of the end plate 6 b corresponding to each of the stator contact portions 61 in an axial direction, and a disadvantage in which the end plate 6 b is deformed due to the motor fixing portion 6 a being deformed to increase the diameter, is prevented. In addition, a reinforcing rib 65 reinforcing the end plate 6 b is provided at a position of the end plate 6 b corresponding to each of the stator non-contact portions 62 in the axial direction, and deformation of the stator contact portion 61 influencing the end plate 6 b via the reinforcing rib 65 is prevented.

1 . An electric scroll compressor, comprising:
 a housing member;   a compression mechanism which is accommodated in the housing member , and in which a fixing scroll having a substrate and a spiral wall and a swing scroll having a substrate and a spiral wall mesh with each other to form a compression chamber;   a drive shaft by which the swing scroll is revolved;   a rotation preventing mechanism which prevents rotation of the swing scroll; and   an electric motor which is accommodated in the housing member and rotates the drive shaft,   wherein the electric motor includes a rotor which is fixed to the drive shaft and a stator which excites and drives the rotor,   wherein in the housing member, a motor fixing portion to which the electric motor is fixed, and an end plate which supports an axial load of the swing scroll and rotatably supports the drive shaft are integrally formed,   wherein stator contact portions which come into contact with the stator and stator non-contact portions which do not come into contact with the stator are alternately disposed in a circumferential direction on an inner circumferential wall of the motor fixing portion, and   wherein a hole, which is formed on a position corresponding to each of the stator contact portions in an axial direction and penetrates the end plate in the axial direction, is provided on the end plate.   
     
     
         2 . The electric scroll compressor according to  claim 1 , wherein a reinforcing rib, which is formed on a position corresponding to each of the stator non-contact portions in the axial direction and reinforces the end plate, is provided on the end plate. 
     
     
         3 . The electric scroll compressor according to  claim 2 , wherein the hole is a long hole which is long in a circumferential direction of the end plate. 
     
     
         4 . The electric scroll compressor according to  claim 3 , wherein the hole is a fluid passage through which a fluid to be compressed, which is compressed in the compression chamber, flows. 
     
     
         5 . The electric scroll compressor according to  claim 4 , wherein the rotation preventing mechanism includes a plurality of ring members which are disposed in a circumferential direction and a plurality of pins which engage with the ring members, between the substrate of the swing scroll and the end plate, and wherein each of the ring members is accommodated in a recessed portion formed on the substrate of the swing scroll, and each of the pins is fixed to the end plate. 
     
     
         6 . The electric scroll compressor according to  claim 4 , wherein a positioning pin which positions the fixing scroll with respect to the end plate is disposed on the end plate, and the positioning pin is provided on a virtual circle including the hole. 
     
     
         7 . The electric scroll compressor according to any one of  claim 5 , wherein a positioning pin which positions the fixing scroll with respect to the end plate is disposed on the end plate, and the positioning pin is provided on a virtual circle including the hole. 
     
     
         8 . The electric scroll compressor according to  claim 2 , wherein the hole is a fluid passage through which a fluid to be compressed, which is compressed in the compression chamber, flows. 
     
     
         9 . The electric scroll compressor according to  claim 8 , wherein the rotation preventing mechanism includes a plurality of ring members which are disposed in a circumferential direction and a plurality of pins which engage with the ring members, between the substrate of the swing scroll and the end plate, and wherein each of the ring members is accommodated in a recessed portion formed on the substrate of the swing scroll, and each of the pins is fixed to the end plate. 
     
     
         10 . The electric scroll compressor according to  claim 8 , wherein a positioning pin which positions the fixing scroll with respect to the end plate is disposed on the end plate, and the positioning pin is provided on a virtual circle including the hole. 
     
     
         11 . The electric scroll compressor according to  claim 1 , wherein the hole is a long hole which is long in a circumferential direction of the end plate. 
     
     
         12 . The electric scroll compressor according to  claim 11 , wherein the hole is a fluid passage through which a fluid to be compressed, which is compressed in the compression chamber, flows. 
     
     
         13 . The electric scroll compressor according to  claim 12 , wherein the rotation preventing mechanism includes a plurality of ring members which are disposed in a circumferential direction and a plurality of pins which engage with the ring members, between the substrate of the swing scroll and the end plate, and wherein each of the ring members is accommodated in a recessed portion formed on the substrate of the swing scroll, and each of the pins is fixed to the end plate. 
     
     
         14 . The electric scroll compressor according to  claim 12 , wherein a positioning pin which positions the fixing scroll with respect to the end plate is disposed on the end plate, and the positioning pin is provided on a virtual circle including the hole. 
     
     
         15 . The electric scroll compressor according to  claim 1 , wherein the hole is a fluid passage through which a fluid to be compressed, which is compressed in the compression chamber, flows. 
     
     
         16 . The electric scroll compressor according to  claim 15 , wherein the rotation preventing mechanism includes a plurality of ring members which are disposed in a circumferential direction and a plurality of pins which engage with the ring members, between the substrate of the swing scroll and the end plate, and wherein each of the ring members is accommodated in a recessed portion formed on the substrate of the swing scroll, and each of the pins is fixed to the end plate. 
     
     
         17 . The electric scroll compressor according to  claim 15 , wherein a positioning pin which positions the fixing scroll with respect to the end plate is disposed on the end plate, and the positioning pin is provided on a virtual circle including the hole. 
     
     
         18 . The electric scroll compressor according to  claim 1 , wherein the rotation preventing mechanism includes a plurality of ring members which are disposed in a circumferential direction and a plurality of pins which engage with the ring members, between the substrate of the swing scroll and the end plate, and wherein each of the ring members is accommodated in a recessed portion formed on the substrate of the swing scroll, and each of the pins is fixed to the end plate. 
     
     
         19 . The electric scroll compressor according to  claim 1 , wherein a positioning pin which positions the fixing scroll with respect to the end plate is disposed on the end plate, and the positioning pin is provided on a virtual circle including the hole.