Rotary compressor

Abstract

Abstract PURPOSE:To reduce the pulsation width of a pressure in a suction chamber, by a method wherein a crank angle, at which a pressure wave, produced during a suction stroke and having an incoming velocity to the suction chamber, is reflected by an open end on the accumulator side and returned, is controlled in a specified range. CONSTITUTION:In the case of thetaSR=thetaS+12LsN/aS, wherein thetas(deg) is a suction starting crank angle, Ls(m) is the length of a suction line 13, N(rpm) is the number of revolutions of a shaft, aS(m/s) is a sound velocity in the suction line 13, and thetas(deg) is the return angle of a pressure wave produced on the cylinder 10 side of the suction line 13 during the starting of suction, a compressor is so constituted that the return crank angle is in a range of 296(deg)<=thetaSR<=406(deg). With this constitution, a crank angle theta(deg), at which a pressure wave produced at the pipe end on the cylinder 10 side of the suction line 13 during the suction stroke of a rotary compressor and an incoming velocity to the suction chamber of the cylinder 10 is reflected by the open end of the accumulator 9 side, is controlled in a specified range in the vicinity of a subsequent suction stroke starting crank angle, and this enables reduction of a pressure pulsation width of the suction chamber.

Inventors

• 👤 Hideo Hirano
• 👤 秀夫 平野

Bibliographic Details