Canned type rotating electrical machine
A rotating electrical machine according to the present invention includes a can formed in a tubular shape and made of fiber reinforced plastic. At least a part of a first end portion of the can is located on a radially outer side of an adhered portion of a first end member, and a resin-based adhesive is filled in a gap between the part of the first end portion and the adhered portion of the first end member. At least a part of a second end portion of the can is located on a radially outer side of an adhered portion of a second end member, and the resin-based adhesive is filled in a gap between the part of the second end portion and the adhered portion of the second end member.
1. A canned type rotating electrical machine comprising an isolation unit configured to isolate a rotor from a stator, wherein:
the isolation unit includes
a can located between the rotor and the stator, formed in a tubular shape, and made of fiber reinforced plastic,
a first end member located on a first end portion side of a first end portion of the can and made of metal, and
a second end member located on a second end portion side of a second end portion of the can and made of metal;
each of the first end member and the second end member includes an annular fixed portion fixed to a casing and a cylindrical adhered portion adhered to the can;
at least a part of the first end portion of the can is located on a radially outer side of the adhered portion of the first end member, and a resin-based adhesive is filled in a gap between the part of the first end portion and the adhered portion of the first end member; and
at least a part of the second end portion of the can is located on a radially outer side of the adhered portion of the second end member, and the resin-based adhesive is filled in a gap between the part of the second end portion and the adhered portion of the second end member;
wherein: a through hole penetrating the first end member in an axial direction and having a diameter larger than an outer diameter of a largest portion of the rotor is formed at the first end member.
2. The canned type rotating electrical machine according to claim 1 , wherein:
at the time of assembly, the rotor is inserted through the through hole to be arranged inside the can.
3. The canned type rotating electrical machine according to claim 2 , wherein:
the first end portion of the can is located on an axially outer side of the rotor and the stator; and
an inner diameter and outer diameter of the first end portion are larger than those of a middle portion, sandwiched between the rotor and the stator, of the can.
4. The canned type rotating electrical machine according to any one of claims 1 to 3 , wherein
the can is made of carbon fiber reinforced plastic.
5. The canned type rotating electrical machine according to any one of claims 1 to 3 , wherein:
at least one of the first end member and the second end member includes an expansion joint located between the fixed portion and the adhered portion and configured to expand and contract in the axial direction; and
a distance between the fixed portion and the adhered portion located on both sides of the expansion joint is variable.
6. The canned type rotating electrical machine according to claim 4 , wherein:
at least one of the first end member and the second end member includes an expansion joint located between the fixed portion and the adhered portion and configured to expand and contract in the axial direction; and
a distance between the fixed portion and the adhered portion located on both sides of the expansion joint is variable.