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发明公开
CN101627181A 二级旋转式膨胀机、膨胀机一体型压缩机及冷冻循环装置 有权

二级旋转式膨胀机、膨胀机一体型压缩机及冷冻循环装置
摘要：
本发明提供一种二级旋转式膨胀机、膨胀机一体型压缩机及冷冻循环装置。膨胀机一体型压缩机(10)具有二级旋转式膨胀机(3)，其中所述二级旋转式膨胀机(3)具有第一工作缸(41)及第二工作缸(42)。在膨胀机构(3)形成有与第一工作缸(41)内的上游侧的工作室相邻的吸入孔(71)和与第二工作缸(42)内的下游侧的工作室相邻的排出孔。在第一工作缸(41)与第二工作缸(42)之间设置有中板(43)。在中板(43)形成有使第一工作缸(41)内的下游侧的工作室与第二工作缸(42)内的上游侧的工作室连通的连通路(43a)。连通路(43a)在吸入过程期间与第一工作缸(41)内的工作室为非连通状态，而在吸入过程结束时刻或之后与第一工作缸(41)内的下游侧的工作室连通。
摘要（英）：

An expander-integrated compressor (10) has a two-stage rotary type expansion mechanism (3) having a first cylinder (41) and a second cylinder (42). In the expansion mechanism (3) are formed a suction hole (71) facing an operation chamber on the upstream side in the first cylinder (41) and a discharge hole facing an operation chamber on the downstream side in the second cylinder (42). A middle plate (43) is provided between the first cylinder (41) and the second cylinder (42). In the middle plate (43), there is formed a communication path (43a) for allowing communication between the operation chamber on the downstream side in the first cylinder (41) and the operation chamber on the upstream side in the second cylinder (42). The communication path (43a) is not communicated with the operation chamber in the fist cylinder (42) during a suction process and is communicated with the operation chamber on the downstream side in the first cylinder (41) at the time when the suction process is completed or after that.

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