The Scroll Compressor with Variable Capacity Control Mechanism for Automotive Air Conditioner

We have developed the scroll co•pressor with variable capacity control nechanis•. The a•ount of bypassed gas fro• the co•pression chanber to the suction cha•ber is controlled by displace•ent of the bypass piston. This paper presents as follows. The analytical technique for calculatins perfor•ance of the co•pressor with by~pass-type capacity control •echanis• has been developed. Also, experi•ental loss analysis by •easure•ent of P-V diagra• has been carried out. The result of calculating perfor•ance has good agree•ent with that of experi•ental loss analysis. INTRODUCTION Recently, the co•pressor with variable capacity control MechaniSM for auto•otive air conditioners has been reMarkably developed to satisfy the following require•ents. (1) ~ keep the auto•otive cabin teMperature coMfortable w ~ iMprove drivins feelins w ~ drive the syste• econoMically through all seasons We have developed the scroll coMpressor with excellent quality as that for auto•otive airconditioners'' ·•>, and a by-pass-type •echanisM is adopted as the continuous capacity control. The capacity control mechanism, which changes the channel area of the bypass hole continuously according to the suction gas pre~sure, has been developed. The development of performance simulation progra•, the Measurins results of internal behavior and the results of loss analysis for capacity control co•Pressor are described below.