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    Air conditioning system for vehicle with refrigerant circuit and compressor of variable displacement which is controlled and output amount alters in reaction to displacement control signal
    31.
    发明专利
    Air conditioning system for vehicle with refrigerant circuit and compressor of variable displacement which is controlled and output amount alters in reaction to displacement control signal 未知

    公开(公告)号：DE10053426A1

    公开(公告)日：2001-05-10

    申请号：DE10053426

    申请日：2000-10-27

    Applicant: SANDEN CORP

    Inventor： KAMEI SATOSHI ,  INOUE ATSUO ,  TSUBOI MASATO ,  SUGAWARA KEI

    IPC: B60H1/00 ,  B60H1/32 ,  F25B49/02

    Abstract: A control unit (26) computes the displacement of the compressor (18) according to data from the unit (25) and the detection units (22,23) of the refrigerant circuit operating condition and for controlling the displacement of the compressor (18) so that the temp. (Te), which indicates the heat exchangeability, approximating to the desired value (TV). A first value (A,C) and a second value (B,D) higher than the first value (A,C) are adjusted in the control unit (26) in relation to the operating condition of the refrigerant circuit (17), and for restricting an excessive control of the compression of the compressor. The control unit (26) controls the displacement of the compressor at two positions, if the operating condition of the refrigerant circuit (17) goes in a region between the first and the second adjusted value (A,C;B,D). So that one of the positions is a position corresp. to a first displacement control value, which is computed by the control unit. The other position is a position corresp. to a second displacement value, which is predetermined and is smaller than the first displacement control value.

    34.
    发明专利
    未知

    公开(公告)号：AT408536T

    公开(公告)日：2008-10-15

    申请号：AT06127226

    申请日：2006-12-27

    Applicant: SANDEN CORP

    Inventor： MATSUMOTO YUUICHI ,  SUZUKI KENICHI ,  TSUBOI MASATO

    IPC: B60H1/32

    Abstract: An air conditioning system for a vehicle includes a first refrigeration cycle, an expander, and a second refrigeration cycle. The first refrigeration cycle includes a first compressor, a first radiator, a first pressure reducer, an evaporator, and a gas/liquid separator. The expander is disposed on a first fluid communication path between the first radiator and the first pressure reducer. The second refrigeration cycle, which is provided as a cascade cycle, includes a second compressor powered by energy harnessed from adiabatic expansion of the refrigerant at the expander, thereby obviating the need for an additional power source for the second refrigeration cycle. A heat exchanger further is provided on a second fluid communication path in the second refrigeration cycle. The heat exchanger is configured to provide a heat exchange between refrigerant disposed within each of the respective first and second fluid communication paths.

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