公开(公告)号：US5400613A

公开(公告)日：1995-03-28

申请号：US154537

申请日：1993-11-19

Applicant: Andrew O'Neal

Inventor： Andrew O'Neal

IPC: F25B43/04 ,  F25B45/00

CPC classification number: F25B43/043

Abstract: A portable purging apparatus that automatically removes air and non-condensable gases from an operating refrigeration system wherein refrigerant gas condenses at a cooling coil disposed in the upper portion of a purge vessel, the condensate falling to the bottom of the vessel where a pickup tube conveys the condensate out of the vessel and to a thermal expansion valve that meters refrigerant into the cooling coil, the outlet of the coil connecting to the suction line of the operating refrigeration system. Non-condensable gases collect in the top of the purge vessel and displace condensable gas around the cooling coil causing less heat load at the coil and a lower suction line temperature whereby a thermostat actuates a purging solenoid valve to discharge non-condensable gases from the purge vessel through a flow restricting orfice to the atmosphere.

Abstract translation: 一种便携式清洗设备，其自动从操作的制冷系统中除去空气和不可冷凝气体，其中制冷剂气体在设置在清洗容器的上部的冷却盘管处冷凝，冷凝物落到容器的底部，拾取管传送 冷凝器从容器中出来，并连接到将制冷剂计入冷却盘管的热膨胀阀，线圈的出口连接到操作制冷系统的吸入管线。 不可冷凝的气体聚集在吹扫容器的顶部并且置换冷却盘管周围的可冷凝气体，从而在线圈处产生较少的热负荷和较低的吸入管线温度，由此恒温器致动清洗电磁阀以从吹扫排出不可冷凝的气体 船只通过流动限制大气层。

公开(公告)号：US5582023A

公开(公告)日：1996-12-10

申请号：US387340

申请日：1995-02-13

Applicant: Andrew O'Neal

Inventor： Andrew O'Neal

IPC: F25B43/04

CPC classification number: F25B43/043

Abstract: A portable apparatus for recovering refrigerant from a refrigeration system and delivering the refrigerant to a refrigerant storage tank. The recovery is automatically terminated when the liquid refrigerant occupies 80% of the volume of the recovery tank. The apparatus includes a liquid sensing thermistor that is in contact with the entering refrigerant to the recovery machine. When liquid is detected, it is routed directly to the recovery tank. Gaseous refrigerant and any non-condensable gases from the top of the recovery tank are directed to the suction of a compressor then to a condenser and to a purge vessel that functions as a receiver. When the entering refrigerant is in a gaseous phase, it is routed to the suction of the compressor. A second liquid sensing thermistor is in contact with the gaseous refrigerant from the top of the recovery tank and if liquid is detected the recovery process is terminated. A liquid sensing device near the bottom of the purge vessel actuates a solenoid valve to return the condensed liquid to the liquid inlet of the recovery tank. A cooling coil at the interior top of the purge vessel also condenses refrigerant. When non-condensable gases accumulate around the coil, there is less latent heat input to the coil and the suction line temperature drops. A temperature control with the sensing bulb at the suction line at a preset point actuates a solenoid valve in a line from the top of the purge vessel to purge the non-condensable gas through a small orifice to the atmosphere.

Abstract translation: 一种用于从制冷系统回收制冷剂并将制冷剂输送到制冷剂储存罐的便携式设备。 当液体制冷剂占回收罐体积的80％时，回收自动终止。 该装置包括与进入的制冷剂接触到回收机的液体感测热敏电阻。 当检测到液体时，将其直接路由到回收罐。 气态制冷剂和来自回收罐顶部的任何不可冷凝气体被引导到压缩机的抽吸器，然后被引导到冷凝器和用作接收器的净化容器。 当进入的制冷剂处于气相时，它被送到压缩机的吸入口。 第二液体感测热敏电阻与来自回收罐顶部的气态制冷剂接触，并且如果检测到液体，则恢复过程终止。 在清洁容器底部附近的液体检测装置致动电磁阀，以将冷凝的液体返回到回收罐的液体入口。 在清洗容器的内部顶部的冷却盘管也冷凝制冷剂。 当不可冷凝的气体积聚在线圈周围时，对线圈的潜热输入较少，吸入管线温度下降。 在预设点处的吸入管线处的感测灯泡的温度控制从净化容器的顶部起动线路中的电磁阀，以通过小孔将大气中的不可冷凝气体吹扫到大气中。