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发明授权
US07699589B2 Scroll type fluid machine having a circulation path and inlet path for guiding refrigerant from a discharge chamber to a drive casing and to a rear-side of movable scroll 有权
涡卷式流体机具有循环路径和入口路径，用于将制冷剂从排出室引导到驱动壳体和动涡旋盘的后侧

Scroll type fluid machine having a circulation path and inlet path for guiding refrigerant from a discharge chamber to a drive casing and to a rear-side of movable scroll
摘要：
In a scroll-type fluid machine (4), a refrigerant in a discharge chamber (80) is adjusted at prescribed discharge pressure by using a discharge valve (84), discharged from a scroll unit (52), and supplied to a refrigeration circuit (2), and the machine has a circulation path (7) for introducing the refrigerant in the discharge chamber from the refrigeration circuit toward a drive casing (22) while maintaining the refrigerant pressure, and an inlet path (93) formed in a compression casing (24) and leads the refrigerant in the circulation path to the rear side of a movable scroll (54) to make the led refrigerant counteract the refrigerant discharge pressure acting on the front side of the movable scroll.
摘要（中）：

在涡旋式流体机械（4）中，通过使用从涡旋单元（52）排出的排出阀（84）将排出室（80）中的制冷剂调整为规定的排出压力，供给制冷回路 （2），并且所述机器具有循环路径（7），用于在保持制冷剂压力的同时将制冷剂中的制冷剂从制冷回路引导到驱动壳体（22），以及形成为压缩的入口通路（93） 壳体（24），并且将循环路径中的制冷剂引导到动涡旋盘（54）的后侧，使得制冷剂抵消作用在动涡旋盘前侧的制冷剂排出压力。

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