公开(公告)号：US5195331A

公开(公告)日：1993-03-23

申请号：US690335

申请日：1991-04-26

申请人： Bernard Zimmern ,  Jean L Picouet

发明人： Bernard Zimmern ,  Jean L Picouet

IPC分类号： F25B41/06

CPC分类号： F25B41/062 ,  F25B2341/0681 ,  F25B2500/15 ,  F25B2600/21

摘要： The expansion valve 103 of the refrigerating machine is controlled by the difference between the pressure in a bulb 104 containing a fixed amount of fluid and the pressure in the evaporator 2. The bulb is mounted in the discharge pipe 1 of the evaporator and is heated by a resistor. In the absence of droplets of liquid refrigerant in the flow through the discharge pipe, i.e when the refrigerant flow rate tends to become too low with respect to the cold demand, the resistor heats up the fluid in the bulb, the pressure in the bulb increases and moves the expansion valve to a more opened position. As soon as droplets hit the bulb in the discharge pipe, said droplets cool down the bulb despite the heating effect of the resistor and the expansion valve is moved to a more closed position. Thus, the flow rate control uses variations in heat transfer coefficients in the discharge pipe rather than superheat temperature in the discharge pipe. The evaporator may be small-sized because it does not have to produce superheat.

摘要翻译： 冷冻机的膨胀阀103由包含固定量的流体的灯泡104的压力与蒸发器2的压力之间的差来控制。灯泡安装在蒸发器的排出管1中，并被加热 一个电阻 在没有流过排放管的液体制冷剂液滴的情况下，即当制冷剂流量相对于冷需求趋于变得太低时，电阻加热灯泡中的流体，灯泡中的压力增加 并将膨胀阀移动到更加打开的位置。 一旦液滴撞击排放管中的灯泡，即使电阻器的加热效应和膨胀阀移动到更为关闭的位置，所述液滴也会冷却灯泡。 因此，流量控制使用排出管中的传热系数的变化，而不是排出管中的过热温度。 蒸发器可以是小尺寸的，因为它不必产生过热。

公开(公告)号：US5087182A

公开(公告)日：1992-02-11

申请号：US629172

申请日：1990-12-19

申请人： Bernard Zimmern ,  Jean L. Picouet

发明人： Bernard Zimmern ,  Jean L. Picouet

IPC分类号： F04C18/52

CPC分类号： F04C18/52

摘要： A machine for the compression or expansion of a fluid comprising a multi-thread screw having opposite low and high pressure ends, the screw being mountable for rotation about an axis to cooperate in substantially fluid-tight manner in a cylindrical bore of a stationary casing, at least one pinion having teeth disposed for meshing engagement with the screw threads and rotatable about an axis transverse with respect to the axis of screw rotation. The screw is carried by a shaft supported by two sets of bearings respectively disposed on each end of the screw. The casing bore is open at both ends and the high pressure end of the casing includes a hoop having an internal bore diameter substantially smaller than the diameter of the bore. The low pressure end of the casing bore is of a diameter at least equal to the diameter of the screw for introduction of the screw into the casing bore during assembly of the screw and casing.

摘要翻译： 一种用于压缩或膨胀流体的机器，包括具有相对的低和高压端的多螺纹螺钉，所述螺钉可安装成围绕轴线旋转，以基本上流体密封的方式配合在固定外壳的圆柱孔中， 至少一个小齿轮具有齿，其设置成与所述螺纹啮合并且能够围绕相对于所述螺杆旋转轴线横向的轴线旋转。 螺杆由一个由两组轴承支承的轴承载，分别设置在螺钉的每一端。 套管孔在两端是开放的，并且壳体的高压端包括具有基本上小于孔的直径的内孔直径的箍。 套管孔的低压端的直径至少等于螺钉的直径，用于在螺钉和套管的组装期间将螺钉引入套管孔。