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公开(公告)号：US20080236189A1
公开(公告)日：2008-10-02
申请号：US10586582
申请日：2005-07-28
申请人： Masahiro Honda , Yasushi Hori , Shigeaki Umeyama , Keijii Ishida
发明人： Masahiro Honda , Yasushi Hori , Shigeaki Umeyama , Keijii Ishida
CPC分类号： F25B31/004 , F25B13/00 , F25B2313/007 , F25B2313/0231 , F25B2400/0401 , F25B2400/13
摘要： An air conditioner (1) including a heat source side heat exchanger (23) constructed such that, when it functions as the evaporator for a refrigerant, the refrigerant flows in from the lower side and flows out from the upper side and having a refrigerant circuit (12) capable of switching to cause the heat source side heat exchanger (23) and use side heat exchangers (32, 42, 52) to function individually as the evaporator or the condenser for the refrigerant. The range of control when evaporation ability of the heat source side heat exchanger (23) is controlled by a heat source side expansion valve (24) is expanded. When the heat source side heat exchanger (23) is operated to function as the evaporator, the air conditioner (1) causes the refrigerant discharged from a compression mechanism (21) through a first bypass circuit (102) to bypass to the suction side of the compression mechanism (21), switches the heat source side heat exchanger (23) to operation in which it functions as the condenser, and closes the heat source side expansion valve (24). By this, a freezing machine oil collected in the heat source side heat exchanger (23) through a first oil return circuit (101) is returned to the suction side of the compression mechanism (21) from the lower part of the heat source side heat exchanger (23).
摘要翻译： 一种空调装置（1），其特征在于，具有热源侧热交换器（23），其构成为，当作为制冷剂的蒸发器而起作用时，制冷剂从下侧流入，从上侧流出并具有制冷剂回路 （12），其能够切换以使热源侧热交换器（23）和使用侧热交换器（32,42,52）分别作为用于制冷剂的蒸发器或冷凝器。 热源侧热交换器（23）的蒸发能力由热源侧膨胀阀（24）控制时的控制范围扩大。 当热源侧热交换器23作为蒸发器而起作用时，空气调节器1使从压缩机构21排出的制冷剂通过第一旁路回路102旁路至吸入侧 压缩机构21将热源侧热交换器23切换为作为冷凝器的动作，关闭热源侧膨胀阀24。 由此，通过第一回油回路（101）收集在热源侧热交换器（23）内的冷冻机油从热源侧热的下部返回到压缩机构（21）的吸入侧 交换器（23）。
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