Compressor motor and electric compressor including the same

Patent metadata

Field	Value
Publication number	US-9404503-B2
Application number	US-201113817252-A
Country	US
Kind code	B2
Filing date	Dec 19, 2011
Priority date	Jan 7, 2011
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

Provided is a compressor motor that can achieve reduction in length of a motor lead wire, compactification of a motor housing, and reduction in size and weight of an electric compressor, and also provided is an electric compressor including the compressor motor. A cluster block ( 39 ) that is connected to a stator coil end of a motor ( 10 ) via a motor lead wire is placed in an outer circumferential region of a stator coil end cover ( 38 ) or a bobbin ( 37 A) of the motor ( 10 ) such that a terminal connection port of the cluster block ( 39 ) faces an outer circumferential side. An opening ( 34 ) and a placement bearing surface ( 35 ) for inserting and placing a hermetic terminal ( 8 ) are provided in an outer circumferential region of a motor housing ( 4 ), the outer circumferential region facing the cluster block ( 39 ) provided on the motor ( 10 ) side. The hermetic terminal ( 8 ) is inserted and placed from an outer circumferential side of the motor housing ( 4 ) to the opening ( 34 ) and the placement bearing surface ( 35 ), to be thereby made directly connectable to the terminal connection port of the cluster block ( 39 ).

First claim

The invention claimed is:

1. A compressor motor that is placed in a motor housing and receives
electric power applied from an outside via a hermetic terminal, wherein
a cluster block that is connected to a stator coil end of the motor via a motor lead wire is placed in an outer circumferential region of a stator coil end cover or a bobbin of the motor such that a terminal connection port of the cluster block faces a direction orthogonal to a tangential direction of the stator coil end cover,
an opening and a placement bearing surface for inserting and placing the hermetic terminal are provided in an outer circumferential region of the motor housing, the outer circumferential region facing the cluster block provided on the motor side, and
the hermetic terminal is inserted and placed from an outer circumferential side of the motor housing to the opening and the placement bearing surface, to be thereby made directly connectable to the terminal connection port of the cluster block, wherein
the cluster block is slightly displaceably locked by respectively fitting a plurality of nail parts erected from the outer circumferential region of the stator coil end cover or the bobbin, to attachment holes with a slight gap in the circumferential direction and/or the axial direction.

2. The compressor motor according to claim 1 , wherein
the cluster block is placed so as to be slightly displaceable in a circumferential direction and/or an axial direction with respect to the stator coil end cover or the bobbin.

3. The compressor motor according to claim 1 , wherein
the cluster block has an inner circumferential surface in contact with the outer circumferential region of the stator coil end cover or the bobbin, the inner circumferential surface having a shape along an outer circumferential surface of the stator coil end cover or the bobbin.

4. The compressor motor according to claim 3 , wherein
the cluster block has a stepped structure in which a terminal in a central portion of UVW terminals is arranged higher than terminals on both sides thereof, and
the inner circumferential surface of the cluster block has the shape along the outer circumferential surface of the stator coil end cover or the bobbin.

5. The compressor motor according to claim 1 , wherein
the cluster block includes a guide part that is integrally provided thereto and guides the motor lead wire.

6. The compressor motor according to claim 1 , wherein
the motor housing includes an inverter accommodating part that is provided in an outer circumferential region thereof corresponding to a position at which the hermetic terminal is placed, and
electric power controlled by an inverter placed in the inverter accommodating part is applied to the motor via the hermetic terminal.

7. An electric compressor comprising a compression mechanism and a compressor motor that are respectively built in housings, the compressor motor driving the compression mechanism, wherein
the compressor housing having the compression mechanism built therein is integrally joined to the motor housing, and
the compression mechanism is coupled to the compressor motor according to claim 1 that is built in the motor housing, to be thereby made drivable by means of the compressor motor.

8. The electric compressor according to claim 7 , wherein
the compression mechanism is coupled to a rotating shaft joined to a rotor of the motor, on the stator coil end side of the motor on which the cluster block is placed.

9. The electric compressor according to claim 7 , wherein
part of a component of the compression mechanism is arranged on an inner side of the cluster block that is placed in the outer circumferential region of the stator coil end cover or the bobbin of the motor so as to partially protrude toward the compression mechanism, and
part of the component is arranged so as to overlap with part of the cluster block in the axial direction.

10. The electric compressor according to claim 7 , wherein
an inverter is placed in an inverter accommodating part provided in the outer circumferential region of the motor housing, and
the inverter that drives and controls the compressor motor is incorporated
and integrated in the outer circumferential region of the motor housing.

Assignees

• Watanabe Takayuki
• Kuroko Masashi
• Nakamura Kazutaka
• Mitsubishi Heavy Ind Ltd

Inventors

• Watanabe Takayuki
• Kuroko Masashi
• Nakamura Kazutaka

Classifications

• F04C2240/30

  Casings or housings · CPC title

• F04B39/121 Primary

  Casings · CPC title

• F04C2240/803

  Electric connectors or cables; Fittings therefor · CPC title

• F04C29/0085

  Prime movers · CPC title

• F04C23/008

  Hermetic pumps · CPC title