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公开(公告)号：US07896627B2
公开(公告)日：2011-03-01
申请号：US10570878
申请日：2004-09-03
IPC分类号： F01C1/30
CPC分类号： F04C18/322 , F01C1/32 , F01C1/356 , F01C11/006 , F01C13/04 , F04C18/0215 , F04C18/356 , F04C23/008
摘要： A rotary type expander is provided with two rotary mechanism parts which differ from each other in displacement volume. The outflow side of the first rotary mechanism part of small displacement volume is fluidly connected to the inflow side of the second rotary mechanism part of large displacement volume. The processes by which the volume of a first low-pressure chamber in the first rotary mechanism part decreases and the volume of a second high-pressure chamber in the second rotary mechanism part increases are respectively in sync. Refrigerant at high pressure is first introduced into a first high-pressure chamber of the first rotary mechanism part. Thereafter, this high-pressure refrigerant passes through a communicating passage and then flows by way of the first low-pressure chamber into the second high-pressure chamber while expanding. The after-expansion refrigerant flows out to an outflow port from a second low-pressure chamber of the second rotary mechanism part.
摘要翻译： 旋转型膨胀机设置有两个在排量上彼此不同的旋转机构部件。 小排量容积的第一旋转机构部的流出侧流体连接到大排量体积的第二旋转机构部的流入侧。 第一旋转机构部分中的第一低压室的容积减小并且第二旋转机构部中的第二高压室的体积分别增加的过程分别同步。 首先将高压制冷剂引入第一旋转机构部的第一高压室。 此后，该高压制冷剂通过连通通路，然后通过第一低压室在膨胀的同时流入第二高压室。 后膨胀制冷剂从第二旋转机构部的第二低压室流出到流出口。
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公开(公告)号：US07628592B2
公开(公告)日：2009-12-08
申请号：US10592803
申请日：2005-03-09
CPC分类号： F04C29/023 , F04C23/008
摘要： In a compression/expansion unit (30) serving as a fluid machine, both a compression mechanism (50) and an expansion mechanism (60) are housed in a single casing (31). An oil supply passageway (90) is formed in a shaft (40) by which the compression mechanism (50) and the expansion mechanism (60) are coupled together. Refrigeration oil accumulated in the bottom of the casing (31) is drawn up into the oil supply passageway (90) and is supplied to the compression mechanism (50) and to the expansion mechanism (60). Surplus refrigeration oil, which is supplied to neither of the compression and expansion mechanisms (50) and (60), is discharged out of the terminating end of the oil supply passageway (90) which opens at the upper end of the shaft (40). Thereafter, the surplus refrigeration oil flows into an oil return pipe (102) from a lead-out hole (101) and is returned back towards a second space (39). This reduces the amount of heat input to the fluid flowing through the expansion mechanism from the surplus refrigeration oil which has not been utilized to lubricate the compression and expansion mechanisms.
摘要翻译： 在用作流体机械的压缩/膨胀单元（30）中，压缩机构（50）和膨胀机构（60）都容纳在单个壳体（31）中。 供油通道（90）形成在轴（40）中，压缩机构（50）和膨胀机构（60）通过该轴连接在一起。 积存在壳体（31）的底部的制冷油被抽吸到供油通路（90）内，供给压缩机构（50）和膨胀机构（60）。 供应到压缩和膨胀机构（50）和（60）的剩余冷冻机油都从在轴（40）的上端开口的供油通道（90）的终端排出， 。 此后，剩余的冷冻机油从出口孔（101）流入回油管（102），并向第二空间（39）返回。 这就减少了从未用于润滑压缩和膨胀机构的剩余冷冻机油输入流经膨胀机构的流体的热量。
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公开(公告)号：US20080232992A1
公开(公告)日：2008-09-25
申请号：US10592803
申请日：2005-03-09
IPC分类号： F01C21/04
CPC分类号： F04C29/023 , F04C23/008
摘要： In a compression/expansion unit (30) serving as a fluid machine, both a compression mechanism (50) and an expansion mechanism (60) are housed in a single casing (31). An oil supply passageway (90) is formed in a shaft (40) by which the compression mechanism (50) and the expansion mechanism (60) are coupled together. Refrigeration oil accumulated in the bottom of the casing (31) is drawn up into the oil supply passageway (90) end is supplied to the compression mechanism (50) and to the expansion mechanism (60). Surplus refrigeration oil, which is supplied to neither of the compression and expansion mechanisms (50) and (60), is discharged out of the terminating end of the oil supply passageway (90) which opens at the upper end of the shaft (40). Thereafter, the surplus refrigeration oil flows into an oil return pipe (102) from a lead-out hole (101) and is returned back towards a second space (39). This reduces the amount of heat input to the fluid flowing through the expansion mechanism from the surplus refrigeration oil which has not been utilized to lubricate the compression and expansion mechanisms.
摘要翻译： 在用作流体机械的压缩/膨胀单元（30）中，压缩机构（50）和膨胀机构（60）都容纳在单个壳体（31）中。 供油通道（90）形成在轴（40）中，压缩机构（50）和膨胀机构（60）通过该轴连接在一起。 积存在壳体（31）的底部的制冷油被抽吸到供油通路（90）的端部被供应到压缩机构（50）和膨胀机构（60）。 供应到压缩和膨胀机构（50）和（60）的剩余冷冻机油都从在轴（40）的上端开口的供油通道（90）的终端排出， 。 此后，剩余的冷冻机油从出口孔（101）流入回油管（102），并向第二空间（39）返回。 这就减少了从未用于润滑压缩和膨胀机构的剩余冷冻机油输入流经膨胀机构的流体的热量。
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公开(公告)号：US07419369B2
公开(公告)日：2008-09-02
申请号：US10538069
申请日：2003-12-03
CPC分类号： F01C20/16 , F01C1/322 , F01C11/008
摘要： Disclosed is a displacement type expansion machine. In the displacement type expansion machine, a communicating passage (72) for allowing fluid communication between an expansion-process intermediate position and an outflow position in an expansion chamber (62) is provided thereby to allow the fluid at the outflow side to return to the expansion chamber (62). Such arrangement prevents the pressure of the expansion chamber (62) from being lowered to an excessive extent in predetermined operating conditions, thereby avoiding the drop in power recovery efficiency.
摘要翻译： 公开了一种位移式膨胀机。 在位移式膨胀机中，设置有用于使膨胀室（62）中的膨胀处理中间位置与流出位置之间的流体连通的连通通路（72），从而允许流出侧的流体返回到 膨胀室（62）。 这样的布置防止了在预定的操作条件下膨胀室（62）的压力降低到过大程度，从而避免了功率回收效率的下降。
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公开(公告)号：US07784303B2
公开(公告)日：2010-08-31
申请号：US11659343
申请日：2005-08-05
申请人： Katsumi Sakitani , Michio Moriwaki , Masakazu Okamoto , Eiji Kumakura , Yume Inokuchi , Tetsuya Okamoto , Yoshinari Sasaki
发明人： Katsumi Sakitani , Michio Moriwaki , Masakazu Okamoto , Eiji Kumakura , Yume Inokuchi , Tetsuya Okamoto , Yoshinari Sasaki
IPC分类号： F25B41/06
CPC分类号： F04C23/008 , F01C1/0215 , F01C1/322 , F01C11/004 , F01C11/008 , F01C20/18
摘要： A positive displacement expander includes a volume change mechanism (90) for changing the volume of a first fluid chamber (72) of an expansion mechanism (60). The expansion mechanism (60) includes a first rotary mechanism (70) and a second rotary mechanism (80) each having a cylinder (71, 81) containing a rotor (75, 85). The first fluid chamber (72) of the first rotary mechanism (70) and a second fluid chamber (82) of the second rotary mechanism (80) are in fluid communication with each other to form an actuation chamber (66). Meanwhile, the first fluid chamber (72) of the first rotary mechanism (70) is smaller than the second fluid chamber (82) of the second rotary mechanism (80). The volume change mechanism (90) includes an auxiliary chamber (93) fluidly communicating with the first fluid chamber (72) and an auxiliary piston (92) for changing the volume of the auxiliary chamber (93). The auxiliary chamber (93) is in fluid communication with the first fluid chamber (72) of the first rotary mechanism (70).
摘要翻译： 正位移扩张器包括用于改变膨胀机构（60）的第一流体室（72）的体积的容积变化机构（90）。 膨胀机构60具有第一旋转机构70和第二旋转机构80，所述第一旋转机构70具有容纳转子75,85的气缸71,71。 第一旋转机构（70）的第一流体室（72）和第二旋转机构（80）的第二流体室（82）彼此流体连通以形成致动室（66）。 同时，第一旋转机构（70）的第一流体室（72）比第二旋转机构（80）的第二流体室（82）小。 容积切换机构90包括与第一流体室72流体连通的辅助室93和用于改变辅助室93的容积的辅助活塞92。 辅助室（93）与第一旋转机构（70）的第一流体室（72）流体连通。
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公开(公告)号：US20090100860A1
公开(公告)日：2009-04-23
申请号：US12224777
申请日：2007-03-05
IPC分类号： F25B43/02
CPC分类号： F04C23/008 , F01C1/322 , F04C23/003 , F04C29/023 , F25B13/00 , F25B2313/02742 , F25B2400/14
摘要： In a compression/expansion unit (30) serving as a fluid machine, both of a compression mechanism (50) and an expansion mechanism (60) are contained in a single casing (31). A shaft (40) coupling the compression mechanism (50) to the expansion mechanism (60) has an oil feeding channel (90) formed therein. Refrigerating machine oil accumulated at the bottom of the casing (31) is sucked up into the oil feeding channel (90) and fed to the compression mechanism (50) and the expansion mechanism (60). The refrigerating machine oil fed to the expansion mechanism (60) is discharged from the expansion mechanism (60) together with the refrigerant after expansion, flows through the refrigerant circuit and then flows back to the compression mechanism (50) in the compression/expansion unit (30).
摘要翻译： 在用作流体机械的压缩/膨胀单元（30）中，压缩机构（50）和膨胀机构（60）都包含在单个壳体（31）中。 将压缩机构（50）与膨胀机构（60）连接的轴（40）具有形成在其中的供油通道（90）。 积存在壳体31的底部的制冷机油被吸入供油通道90，供给压缩机构50和膨胀机构60。 供给到膨胀机构60的制冷机油与膨胀机构60一起在膨胀后与制冷剂一起排出，流过制冷剂回路，然后回流到压缩/膨胀单元中的压缩机构50 （30）。
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公开(公告)号：US20090071187A1
公开(公告)日：2009-03-19
申请号：US12226433
申请日：2007-04-16
IPC分类号： F25B23/00
CPC分类号： F25B13/00 , F25B9/008 , F25B9/06 , F25B31/004 , F25B2309/061 , F25B2313/02742 , F25B2400/14 , F25B2700/03
摘要： A refrigerant circuit (11) of an air conditioner (10) includes a compressor (20) and an expander (30). In the compressor (20), refrigerator oil is supplied from an oil reservoir (27) to a compression mechanism (21). In the expander (30), the refrigerator oil is supplied from an oil reservoir (37) to an expansion mechanism (31). The inner pressures of the compressor casing (24) and the expander casing (34) are the high pressure and the low pressure of the refrigeration cycle, respectively. An oil adjusting valve (52) is provided in an oil pipe (42) connecting the compressor casing (24) and the expander casing (34). The oil amount adjusting valve (52) is operated on the basis of an output signal of an oil level sensor (51). When the oil amount adjusting valve (52) is opened, the refrigerator oil flows from the oil reservoir (27) in the compressor casing (24) toward the oil reservoir (37) in the expander casing (34) through the oil pipe (42).
摘要翻译： 空调装置（10）的制冷剂回路（11）具有压缩机（20）和膨胀机（30）。 在压缩机20中，从油箱27向压缩机构21供给冷冻机油。 在膨胀机30中，冷冻机油从储油部37向膨胀机构31供给。 压缩机壳体（24）和膨胀机壳体（34）的内部压力分别是制冷循环的高压和低压。 在连接压缩机壳体（24）和膨胀机壳体（34）的油管（42）中设置有油调节阀（52）。 油量调节阀52基于油位传感器51的输出信号进行动作。 当油量调节阀52打开时，冷冻机油通过油管（42）从压缩机壳体（24）中的储油部（27）朝向膨胀机壳体（34）内的储油部（37） ）。
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公开(公告)号：US20060165542A1
公开(公告)日：2006-07-27
申请号：US10538069
申请日：2003-12-03
IPC分类号： F04C18/00
CPC分类号： F01C20/16 , F01C1/322 , F01C11/008
摘要： Disclosed is a displacement type expansion machine. In the displacement type expansion machine, a communicating passage (72) for allowing fluid communication between an expansion-process intermediate position and an outflow position in an expansion chamber (62) is provided thereby to allow the fluid at the outflow side to return to the expansion chamber (62). Such arrangement prevents the pressure of the expansion chamber (62) from being lowered to an excessive extent in predetermined operating conditions, thereby avoiding the drop in power recovery efficiency.
摘要翻译： 公开了一种位移式膨胀机。 在位移式膨胀机中，设置有用于使膨胀室（62）中的膨胀处理中间位置与流出位置之间的流体连通的连通通路（72），从而允许流出侧的流体返回到 膨胀室（62）。 这样的布置防止了在预定的操作条件下膨胀室（62）的压力降低到过大程度，从而避免了功率回收效率的下降。
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公开(公告)号：US07918096B2
公开(公告)日：2011-04-05
申请号：US12226435
申请日：2007-04-16
CPC分类号： F25B31/004 , F25B1/04 , F25B9/008 , F25B9/06 , F25B13/00 , F25B2309/061 , F25B2313/02742 , F25B2400/14 , F25B2700/03
摘要： In a refrigerant circuit (11), a compressor (20) and an expander (30) are provided separately. An expander casing (34) is connected to a delivery pipe (26) of the compressor (20) and high pressure refrigerant passes through the inside of the expander casing (34). Therefore, the compressor casing (24) and the expander casing (34) are equalized in their internal pressure. An oil distribution pipe (41) for connection of an oil sump (27) of the compressor (20) and an oil sump (37) of the expander (30) is provided with an oil regulating valve (52). The oil regulating valve (52) is controlled in response to a signal outputted from an oil level sensor (51). When the oil regulating valve (52) is opened, the oil sump (27) within the compressor casing (24) and the oil sump (37) within the expander casing (34) fluidly communicate with each other whereby refrigeration oil travels through the oil distribution pipe (41).
摘要翻译： 在制冷剂回路（11）中分别设置有压缩机（20）和膨胀机（30）。 膨胀机壳体34与压缩机20的输送管26连接，高压制冷剂通过膨胀机壳体34的内部。 因此，压缩机壳体（24）和膨胀机壳体（34）的内部压力相等。 用于连接压缩机（20）的油底壳（27）和膨胀机（30）的油底壳（37）的配油管（41）设置有油调节阀（52）。 油调节阀（52）根据从油位传感器（51）输出的信号进行控制。 当油调节阀52打开时，压缩机壳体24内的油底壳27和膨胀机壳体34内的油底壳37彼此流体连通，由此冷冻机油穿过油 分配管（41）。
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公开(公告)号：US07674097B2
公开(公告)日：2010-03-09
申请号：US10591918
申请日：2005-03-04
CPC分类号： F01C20/26 , F01C1/32 , F01C1/356 , F01C13/04 , F01C20/02 , F04C23/003 , F04C23/008 , F25B1/04 , F25B9/008 , F25B9/06 , F25B13/00 , F25B2309/061 , F25B2313/02742
摘要： Two rotary mechanism parts (70, 80) are provided in a rotary expander (60). The first rotary mechanism part (70) is smaller in displacement volume than the second rotary mechanism part (80). A first low-pressure chamber (74) of the first rotary mechanism part (70) and a second high-pressure chamber (83) of the second rotary mechanism part (80) are fluidly connected together by a communicating passageway (64), thereby forming a single expansion chamber (66). High-pressure refrigerant introduced into the first rotary mechanism part (70) expands in the expansion chamber (66). An injection passageway (37) is fluidly connected to the communicating passageway (64). When an motor-operated valve (90) is placed in the open state, high-pressure refrigerant is introduced into the expansion chamber (66) also from the injection passageway (37). This makes it possible to inhibit the drop in power recovery efficiency, even in the condition that causes the actual expansion ratio to fall below the design expansion ratio.
摘要翻译： 两个旋转机构部件（70,80）设置在旋转式膨胀机（60）中。 第一旋转机构部（70）的位移容积小于第二旋转机构部（80）。 第一旋转机构部分（70）的第一低压室（74）和第二旋转机构部分（80）的第二高压室（83）通过连通通道（64）流体连接在一起 形成单个膨胀室（66）。 引入到第一旋转机构部分（70）中的高压制冷剂在膨胀室（66）中膨胀。 注入通道（37）流体地连接到连通通道（64）。 当电动阀（90）处于打开状态时，高压制冷剂也从注入通道（37）引入膨胀室（66）。 这使得即使在使实际膨胀比低于设计膨胀比的条件下也可以抑制功率回收效率的下降。
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