Vehicle air conditioner with variable displacement compressor
    1.
    发明授权
    Vehicle air conditioner with variable displacement compressor 失效
    车用空调带变排量压缩机

    公开(公告)号:US06823687B2

    公开(公告)日:2004-11-30

    申请号:US10637564

    申请日:2003-08-11

    IPC分类号: F25B4900

    摘要: In a vehicle air conditioner, a variable displacement compressor has a control valve for continuously changing a discharge capacity of the compressor, and a control unit calculates an electrical value DT to be applied to the control valve based on the following formula of DT=DT(n−1)+Kp[(En−En−1)+C/(Ti×En)]. In this formula, En=Te−Teo, Kp=Kp′/(Ph×Ph′), Ti=Ti′/(Ph×Ph″), C is a sampling cycle, n is a positive number, Kp′, Ti′, Ph′ and Ph″ are constants, Ph is a refrigerant pressure at a high pressure side, Te is a detected air temperature at an air outlet of the evaporator, and Teo is a target evaporator air temperature that is calculated based on an outside air temperature Tam. Accordingly, the compressor can be stably controlled in a wide thermal load range.

    摘要翻译: 在车辆用空调机中,可变容量压缩机具有用于连续地改变压缩机的排出容量的控制阀,控制单元基于以下DT = DT(D)来计算要施加到控制阀的电气值DT n-1)+ Kp [(En-En-1)+ C /(TixEn)]。 在该公式中,En = Te-Teo,Kp = Kp'/(PhxPh'),Ti = Ti'/(PhxPh“),C是取样周期,n是正数,Kp',Ti',Ph '和Ph'是常数,Ph是高压侧的制冷剂压力,Te是蒸发器的空气出口处的检测到的空气温度,Teo是基于外部空气温度计算的目标蒸发器空气温度 谭。 因此,可以在宽的热负荷范围内稳定地控制压缩机。

    Method for brazing a magnesium-containing aluminum alloy
    2.
    发明授权
    Method for brazing a magnesium-containing aluminum alloy 失效
    钎焊含镁铝合金的方法

    公开(公告)号:US4705206A

    公开(公告)日:1987-11-10

    申请号:US810295

    申请日:1985-12-18

    摘要: An aluminum alloy including magnesium can be joined by brazing even when flux made of potassium fluoaluminates is employed. The aluminum alloy including magnesium is heated in a vacuum, so that magnesium in the aluminum alloy evaporates from the surface of the aluminum alloy. The weight ratio of magnesium at the surface of the aluminum alloy can be reduced to less than 0.5 as a result of the heating step. The aluminum alloy treated by this operation is, thereafter covered with brazing material and clad with flux. After that, the aluminum alloy is heated in a furnace in order to melt the brazing material.

    摘要翻译: 包括镁的铝合金即使使用由氟化铝钾制成的焊剂也可以通过钎焊接合。 包括镁的铝合金在真空中加热,铝合金中的镁从铝合金的表面蒸发。 由于加热步骤,铝合金表面的镁的重量比可以降低到小于0.5。 通过该操作处理的铝合金,然后用钎焊材料覆盖并用助熔剂包覆。 之后,在炉中加热铝合金,以熔化钎料。