Motor-driven compressor

Patent metadata

Field	Value
Publication number	US-2016153452-A1
Application number	US-201514946846-A
Country	US
Kind code	A1
Filing date	Nov 20, 2015
Priority date	Nov 28, 2014
Publication date	Jun 2, 2016
Grant date	—

Abstract

Provided is a motor-driven compressor capable of realizing reduction in manufacturing costs. A compression mechanism of the motor-driven compressor according to the present invention includes a rotor rotatable by a rotation shaft and provided with a plurality of vane grooves, a plurality of vanes disposed advanceably and retractably in the respective vane grooves, a cup member formed into a bottomed cylindrical shape and enclosing the rotor, and a side plate closing an opening of the cup member The contour of the compressor is formed by a first housing and a second housing, and a suction pressure region in the first housing is hermetically closed from outside at a position where the first housing and the second housing are joined together.

First claim

1 . A motor-driven compressor comprising:
a rotation shaft; a motor mechanism capable of rotating the rotation shaft; a first housing formed into a bottomed cylindrical shape and accommodating the motor mechanism, the first housing being provided with an inlet port and including a suction pressure region; a second housing joined to an open side of the first housing, the second housing being provided with an outlet port and including a discharge pressure region; and a compression mechanism fixed to and supported by the second housing so as to partition the suction pressure region from the discharge pressure region, the compression mechanism being driven by the rotation shaft and including at least one compression chamber, wherein the compression chamber is connected to the suction pressure region and the discharge pressure region and configured such that refrigerating gas sucked into the suction pressure region is compressed in the compression chamber and discharged to the discharge pressure region, the contour of the compressor is formed by the first housing and the second housing, and the suction pressure region in the first housing is hermetically closed from outside at a position where the first housing and the second housing are joined together.

2 . The motor-driven compressor according to claim 1 ,
wherein the compression mechanism includes: a rotor rotatable by the rotation shaft and provided with a plurality of vane grooves; a plurality of vanes disposed advanceably and retractably in the respective vane grooves; a cup member formed into a bottomed cylindrical shape and enclosing the rotor; and a side plate closing an opening of the cup member, and a plurality of the compression chambers are formed by the rotor, the vanes, the cup member, and the side plate.

3 . The motor-driven compressor according to claim 2 , wherein a cover member is provided on an outer circumference of the cup member so as to form a discharge pressure space inside the cover member, the cover member being configured to guide the refrigerant gas discharged into the discharge pressure space to the discharge pressure region.

4 . The motor-driven compressor according to claim 2 ,
wherein the side plate is provided with a shaft hole extending along an axis of the rotation shaft, and the rotation shaft is supported by the shaft hole and a bottom wall of the first housing.

5 . The motor-driven compressor according to claim 3 ,
wherein the side plate is provided with a shaft hole extending along an axis of the rotation shaft, and the rotation shaft is supported by the shaft hole and a bottom wall of the first housing.

Assignees

• Toyota Jidoshokki Kk

Inventors

• Nagano Hiroki
• Mori Tatsushi

Classifications

• F04C2240/30

  Casings or housings · CPC title

• F01C21/10

  Outer members for co-operation with rotary pistons; Casings (casings for rotary engines or machines in general F16M) · CPC title

• F04C29/12 Primary

  Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title

• F04C23/008

  Hermetic pumps · CPC title

• F04C18/3441

  the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation · CPC title