SCROLL CASE OF BLOWER UNIT FOR VEHICLE AIR CONDITIONER, PARTICULARLY REGARDING TO EASILY REDUCING RUMBLE AND WHISTLE NOISES GENERATED FROM BLOWER

摘要

It is that automotive air conditioning device equipment is same the present invention relates to a scroll case (scroll case) for blower unit equipment (blower unit equipment), more specifically, it is coupled to a single curve, such as a scroll case blower unit equipment is related to the exponential function formula, rumble (rumble) and whistle (whistle) of the endpoint from rolling time and minimizes sound etc.. ;The present invention, and the spool section that fan is internally installed, pipe and spool scroll portion in the car and airhandling blowers, it is used for part of appliance, it includes the shell that the discharge port formed from volute section point extends inside, it is any construction of the angle to spool point (Q) from spool reference point (S) in the clockwise direction, the spool any point (Q) of any point of H ' one spool point (one ') spool from the fan center (O) at angle clockwise ' to (Q) distance from, c is constructed roll angle and arrives spool point (one ') from a reference point (S) according to clockwise direction, R w ' be air blower (R w) radius to cutout summation gap (D), ' when advised angle is deployed to scroll end (P) from spool point (one '), to spool-shaped end part from the scroll roll time;H "=R w " 1+2 Tan (') '/2, (0 ' 2-c '=, -- c);It is characterized in that, form and meets relationship.