Electric compressor
An electric compressor includes a housing, a driving shaft, an electric motor, and a compression mechanism. The housing includes a first housing and a second housing. The electric motor includes a stator and a rotor. The first housing has a first end surface. The second housing has a second end surface. The first housing and the second housing are fixed by a first fastener. The stator is fixed to the first end surface by a second fastener. The first end surface has a first hole through which the first fastener is inserted and a second hole in which the second fastener is fixed.
1 . An electric compressor comprising:
a housing;
a driving shaft;
an electric motor that rotates the driving shaft; and
a compression mechanism that is driven with rotation of the driving shaft to compress refrigerant,
the housing including a first housing extending in an axial direction of the driving shaft and a second housing having a cylindrical shape and fixed to the first housing in the axial direction,
the electric motor including a stator formed in a cylindrical shape and a rotor that is rotatable inside the stator,
the first housing and the second housing cooperating to form a suction chamber that is divided from an outside of the housing and into which the refrigerant is sucked,
the first housing having a first end surface that is an annular shape and facing the second housing in the axial direction,
the second housing having a second end surface that is an annular shape and facing the first end surface in the axial direction,
a gasket having an annular shape and being provided between the first end surface and the second end surface and sealing the suction chamber against the outside of the housing,
the first housing and the second housing being fixed with each other with the gasket interposed between the first end surface and the second end surface by a first fastener, wherein
the stator is disposed in the suction chamber and fixed to the first end surface by a second fastener in the axial direction,
the first end surface has a first hole which the first fastener is inserted through or fixed in and a second hole in which the second fastener is fixed,
the second hole is open in the first end surface and is located on an inner side of the first hole in a radial direction of the first housing,
the first fastener is a bolt that is located on an outer side of the stator in the radial direction of the first housing, and
the second fastener is a bolt that is located on an outer side of coil ends of the stator and on an inner side of the first fastener in the radial direction of the first housing.
2 . The electric compressor according to claim 1 further comprising
an inverter that drives and controls the electric motor, wherein
the housing includes an inverter housing in which the inverter is accommodated, and
the inverter housing is fixed to the first housing or the second housing in the axial direction.
3 . The electric compressor according to claim 1 , wherein
the stator includes a stator core formed in a cylindrical shape extending in the axial direction and the coil ends protrude from end surfaces of the stator core in the axial direction, and
the stator core is fixed to the first end surface on the outer side of the coil ends by the second fastener.
4 . The electric compressor according to claim 3 , wherein
the stator includes a cover covering one side of the coil ends, the cover being made of an insulating material,
the cover has a sleeve through which the second fastener is inserted, the sleeve being made of metal, and
the stator core is fixed to the first end surface with the cover and the sleeve interposed between the stator core and the first end surface.
5 . The electric compressor according to claim 1 , wherein
the first end surface has a suction passage through which the refrigerant flows, and
the suction passage is disposed between the first hole and the second hole in a circumferential direction of the first end surface.
6 . The electric compressor according to claim 1 , wherein
at least one of the first housing or the second housing has an attachment leg attached to a mounting object, and
the attachment leg is disposed away from the first end surface and the second end surface in the axial direction.