Scroll fluid machine

Abstract

A scroll fluid machine comprises a body having a driving shaft, an electric motor coupled to the driving shaft, and a blower. The blower cools the body, a connection between the body and motor, and the electric motor by wind from the blower.

1 . A scroll fluid machine comprising:
 a body comprising a driving shaft comprising an eccentric axial portion, an orbiting scroll having an orbiting wrap rotatably mounted to the eccentric axial portion, and a fixed scroll having a fixed wrap engaging with the orbiting wrap to form a sealed chamber between the orbiting wrap and the fixed wrap;   an electric motor operatively connected to the driving shaft of the body; and   a blower at one side of the body to blow wind toward the body, a connection between the body and the electric motor, and the electric motor.   
   
   
       2 . A scroll fluid machine of  claim 1  wherein the blower comprises a housing; a mounting plate fixed to the housing; a cylindrical hood mounted to a peripheral edge of an opening of the mounting plate; a blowing fan in the hood; and a fan-driving electric motor coupled to the fan; and a plurality of stays fixing the fan-driving electric motor at a center of the hood. 
   
   
       3 . A scroll fluid machine of  claim 2  wherein an upper stay of said plurality of stays acts as streamlined guide which allows part of wind generated by the fan-driving electric motor to flow toward the electric motor, thereby enabling wind to flow not only the side of the body but also to the connection between the electric motor and the body. 
   
   
       4 . A scroll fluid machine of  claim 2  wherein the blower is disposed in parallel with a longitudinal direction of the body and the electric motor, and comprises a casing and a blowing fan in the casing, the casing having an outlet facing the body, a connection between the body and electric motor and the motor to allow wind therefrom to blow onto and cool them. 
   
   
       5 . A scroll fluid machine of  claim 2 , further comprising a control; a first temperature sensor attached on the body and connected to the control; and a second temperature sensor attached on the electric motor and connected to the control, the control starting operation of the fan-driving electric motor to move the fan when temperature detected by one of the sensors is higher than predetermined temperature