Scroll compressor having axial fan and discharge brush

Patent metadata

Field	Value
Publication number	US-11469643-B2
Application number	US-201816476930-A
Country	US
Kind code	B2
Filing date	Jan 19, 2018
Priority date	Jan 31, 2017
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

A scroll compressor includes a rotor, a stator, a rotary shaft, an end bracket, an orbiting scroll, a fixed scroll, a suction type cooling fan, and a discharge brush. The discharge brush is fixed to the end bracket facing the cooling fan by a fixing member attached in a radial direction relative to the rotary shaft, and one end of which is in contact with the rotary shaft, in a space secured by the clearance.

First claim

The invention claimed is:

1. A scroll compressor comprising:
a rotor that is stored in a motor casing;
a stator that is stored in the motor casing, and drives the rotor to rotate;
a rotary shaft that is held by bearings, and rotates integrally with the rotor;
an end bracket through which one end portion of the rotary shaft passes, and which seals the motor casing;
an orbiting scroll that supports the other end portion of the rotary shaft, and orbits as the rotary shaft rotates;
a fixed scroll that is disposed facing the orbiting scroll;
a suction type cooling fan which is fixed to the one end portion of the rotary shaft while being apart by a clearance from the end bracket, and which suctions outside air through a suction port provided in an end surface of a fan cover, the end surface facing the end bracket, and generates cooling wind for cooling the fixed scroll or the orbiting scroll in the fan cover, as a rotary vane accommodated in the fan cover rotates;
a discharge brush which is fixed to the end bracket facing the cooling fan by a fixing member attached in a radial direction relative to the rotary shaft, and one end of which is in contact with the rotary shaft, in a space secured by the clearance; and
a counter weight that is provided in the one end portion of the rotary shaft, the one end portion being located adjacent to the cooling fan.

2. The scroll compressor according to claim 1 ,
wherein the discharge brush and the fixing member fixing the discharge brush to the end bracket are exposed to an outside in the space.

3. The scroll compressor according to claim 1 ,
wherein the stator is configured such that a plurality of coil-wound core pieces are disposed in a circumferential direction, and
wherein the stator and the rotor are disposed facing each other with a gap therebetween in a direction parallel to the rotary shaft.

4. The scroll compressor according to claim 3 ,
wherein each core piece is formed of amorphous metal.

Assignees

• Hitachi Industry Equipment Systems Co Ltd

Inventors

• Kato Fuminori
• Kanemoto Yoshiyuki

Classifications

• H02K5/148

  Slidably supported brushes · CPC title

• F04C2240/807

  Balance weight, counterweight · CPC title

• H02K7/04

  Balancing means · 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