Compressor

Abstract

A compressor includes a front housing having a crank chamber therein, a cylinder block having a cylinder bore therein, a rear housing including a low-pressure chamber and a high-pressure chamber therein, a valve plate on which a suction hole for communicating the cylinder bore and the low-pressure chamber is formed, and a suction valve disk for opening and closing the suction hole. A predetermined gap width is provided between the suction valve disk and an opening edge of the suction hole, and the gap width is set to 13-15% of a thickness of the suction valve disk. By the compressor, fixation of the suction valve on the valve plate is prevented. Therefore, noise-and-vibration performance improves and thereby generation of undesired noises is prevented. Further, since the fixation of the suction valve on the valve plate is prevented, a desired volume of refrigerant is surely supplied into the cylinder bore.

1 . A compressor comprising:
 a front housing that has a crank chamber therein;   a cylinder block that is fixed with the front housing and has a cylinder bore therein;   a rear housing that is fixed with the cylinder block with interposing a valve plate therebetween and includes a low-pressure chamber and a high-pressure chamber therein;   the valve plate that is provided between the cylinder block and the rear housing and on which a suction hole for communicating the cylinder bore and the low-pressure chamber is formed; and   a suction valve disk that is attached on a side of the valve plate facing to the cylinder block and has a suction valve for opening and closing the suction hole, wherein   a gap with a predetermined width is provided between the suction valve disk and an opening edge portion of the suction hole, and   the width of the gap is set to 13 to 15% of a thickness of the suction valve disk.   
     
     
         2 . The compressor according to  claim 1 , wherein the width of the gap is 0.065 to 0.175 mm. 
     
     
         3 . The compressor according to  claim 1 , wherein a groove is provided outside the opening edge portion. 
     
     
         4 . The compressor according to  claim 1 , wherein
 the gap is formed by a press working.