Motor-driven fluid machine

Patent metadata

Field	Value
Publication number	US-10164495-B2
Application number	US-201715465701-A
Country	US
Kind code	B2
Filing date	Mar 22, 2017
Priority date	Mar 25, 2016
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A motor-driven fluid machine has three motor wires. The innermost one of the three motor wires in the radial direction of a rotary shaft on a specific section of an outer end portion of a coil end is defined as a first motor wire. The first motor wire has a first extension, which extends from an inner side toward an outer side in the radial direction of the rotary shaft at a position between the specific section and a downstream side in the extending direction of the motor wires, and a second extension, which is continuous from the first extension and extends from the outer side toward the inner side in the radial direction of the rotary shaft to be connected to a corresponding conductive member.

First claim

The invention claimed is:

1. A motor-driven fluid machine comprising:
a housing;
a rotary shaft accommodated in the housing;
an electric motor accommodated in the housing to rotate the rotary shaft;
a drive circuit that drives the electric motor;
a cylindrical stator core that configures a part of the electric motor;
U-phase, V-phase, and W-phase coils wound around the stator core;
an annular coil end projecting from an end face of the stator core at an end with respect to an axial direction of the rotary shaft;
three motor wires routed out of the coil end in correspondence with the U-phase, V-phase, and W-phase coils;
three circuit wires provided to the drive circuit;
three conductive members electrically connected to the corresponding motor wires and the corresponding circuit wires; and
an insulating cluster block that is accommodated in the housing and accommodates the conductive members, wherein
the coil end has an outer end portion at an end with respect to the axial direction of the rotary shaft,
the three motor wires extend in a circumferential direction of the rotary shaft on the outer end portion and are routed out of the coil end such that the motor wires face the same direction while extending in the circumferential direction of the rotary shaft,
part of the outer end portion faces the motor wires and is defined as a facing part,
the motor wires are arranged adjacently in the radial direction of the rotary shaft on a specific section of the facing part,
the three conductive members are located inward in the radial direction of the rotary shaft with respect to the coil end,
the innermost one of the three motor wires in the radial direction of the rotary shaft on the specific section is defined as a first motor wire, and
the first motor wire includes
a first extension extending from an inner side toward an outer side in a radial direction of the rotary shaft at a position between the specific section and a downstream side in an extending direction of the motor wires, and
a second extension that is continuous from the first extension and extends from the outer side toward the inner side in the radial direction of the rotary shaft to be connected to the corresponding one of the conductive members.

2. The motor-driven fluid machine according to claim 1 , wherein
the three conductive members are arranged adjacently in the circumferential direction of the rotary shaft, and
the first motor wire is connected to the most downstream one of the conductive members in the extending direction of the motor wires.

3. The motor-driven fluid machine according to claim 1 , wherein
the housing has a bearing portion that rotationally supports the rotary shaft, and
at least a part of the bearing portion is received in an inner side of the coil end.

4. The motor-driven fluid machine according to claim 1 , wherein each of the coils is wound around the stator core in a wave winding manner.

5. The motor-driven fluid machine according to claim 1 , wherein the motor-driven fluid machine is a motor-driven compressor configured to compress refrigerant.

Assignees

• Toyota Jidoshokki Kk

Inventors

• Hamana Shozo
• Fukasaku Hiroshi
• Adaniya Taku

Classifications

• F04C2210/26

  Refrigerants with particular properties, e.g. HFC-134a · CPC title

• F04C18/0215

  where only one member is moving · CPC title

• H02K5/1732

  radially supporting the rotary shaft at both ends of the rotor (H02K5/1737 takes precedence) · CPC title

• H02K3/50 Primary

  Fastening of winding heads, equalising connectors, or connections thereto · CPC title

• F04C29/0085

  Prime movers · CPC title