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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：US08312732B2
公开(公告)日：2012-11-20
申请号：US12226135
申请日：2007-04-16
IPC分类号： F04B39/02
CPC分类号： F25B31/004 , F25B9/06 , F25B2341/0016 , F25B2700/03
摘要： A compressor and an expander are provided in a refrigerant circuit of an air conditioner. In the compressor, refrigerator oil is supplied from an oil reservoir to a compression mechanism. In the expander, the refrigerator oil is supplied from an oil reservoir to an expansion mechanism. Internal spaces of a compressor casing and an expander casing communicate with each other through an equalizing pipe. An oil pipe connecting the compressor casing and the expander casing is provided with an oil amount adjusting valve operated on the basis of an output signal of an oil level sensor. When the oil amount adjusting valve is opened, the oil reservoir in the compressor casing and the oil reservoir in the expander casing communicate with each other to allow the refrigerator oil to flow through the oil pipe.
摘要翻译： 压缩机和膨胀机设置在空调的制冷剂回路中。 在压缩机中，冷冻机油从储油器供给压缩机构。 在膨胀机中，冷冻机油从储油器供给到膨胀机构。 压缩机壳体和膨胀机壳体的内部空间通过均衡管道相互连通。 连接压缩机壳体和膨胀机壳体的油管设置有基于油位传感器的输出信号操作的油量调节阀。 当油量调节阀打开时，压缩机壳体中的储油器和膨胀机壳体中的储油器相互连通，以使冷冻机油流过油管。
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公开(公告)号：US20090178433A1
公开(公告)日：2009-07-16
申请号：US11664302
申请日：2005-09-30
IPC分类号： F25D9/00
CPC分类号： F01C1/322 , F01C11/002 , F01C21/006
摘要： A casing (31) houses therein an expansion mechanism (60) and a compression mechanism (50). The expansion mechanism (60) has a rear head (62) in which a pressure snubbing chamber (71) is provided. The pressure snubbing chamber (71) is divided by a piston (77) into an inflow/outflow chamber (72) which fluidly communicates with an inflow port (34) and a back pressure chamber (73) which fluidly communicates with the inside of the casing (31). The piston (77) is displaced in response to suction pressure variation whereby the volume of the inflow/outflow chamber (72) varies. This enables the inflow/outflow chamber (72) to directly perform supply of refrigerant to or suction of refrigerant from the inflow port (34) which is a source of pressure variation, thereby making it possible to effectively inhibit suction pressure variation.
摘要翻译： 壳体（31）容纳有膨胀机构（60）和压缩机构（50）。 膨胀机构（60）具有设置有压力缓冲室（71）的后头部（62）。 压力缓冲室71被活塞77分成流入/流出室72，该流入室72流体地与流入端口34流体连通， 套管（31）。 活塞（77）响应于入口/流出室（72）的体积变化的吸入压力变化而移位。 由此，能够使流入室72直接从作为压力变化源的流入口34进行制冷剂的供给或制冷剂的吸入，能够有效地抑制吸入压力的变化。
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公开(公告)号：US20080310983A1
公开(公告)日：2008-12-18
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
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：US20070053782A1
公开(公告)日：2007-03-08
申请号：US10570878
申请日：2004-09-03
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 (60) is provided with two rotary mechanism parts (70, 80). These two rotary mechanism parts (79, 80) differ from each other in displacement volume. The outflow side of the first rotary mechanism part (70) of small displacement volume is fluidly connected to the inflow side of the second rotary mechanism part (80) of large displacement volume. In addition, the process in which the volume of a first low-pressure chamber (74) in the first rotary mechanism part (70) decreases is in synch with the process in which the volume of a second high-pressure chamber (83) in the second rotary mechanism part (80) increases. Refrigerant at high pressure is first introduced into a first high-pressure chamber (73) of the first rotary mechanism part (70). Thereafter, this high-pressure refrigerant passes through a communicating passage (64) and then flows by way of the first low-pressure chamber (74) into the second high-pressure chamber (83) while expanding. The after-expansion refrigerant flows out to an outflow port (35) from a second low-pressure chamber (84) of the second rotary mechanism part (80).
摘要翻译： 旋转式膨胀机（60）具有两个旋转机构部件（70,80）。 这两个旋转机构部件（79,80）在排量方面彼此不同。 小排量容积的第一旋转机构部（70）的流出侧流体地连接到大排量体积的第二旋转机构部（80）的流入侧。 此外，第一旋转机构部（70）中的第一低压室（74）的容积减小的过程与第二高压室（83）的容积减小的过程同步 第二旋转机构部（80）增加。 首先将高压制冷剂引入第一旋转机构部（70）的第一高压室（73）。 此后，该高压制冷剂通过连通通路64，然后通过第一低压室74在膨胀的同时流入第二高压室83。 后膨胀制冷剂从第二旋转机构部（80）的第二低压室（84）流出到流出口（35）。
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公开(公告)号：US20060059929A1
公开(公告)日：2006-03-23
申请号：US10541590
申请日：2003-12-25
IPC分类号： F25B49/00
CPC分类号： F25B13/00 , F25B9/008 , F25B9/06 , F25B2309/061 , F25B2400/04 , F25B2400/075 , F25B2500/18 , F25B2600/025 , F25B2600/2501
摘要： A refrigerant circuit (10) of a refrigeration apparatus is filled up with carbon dioxide as a refrigerant. In the refrigerant circuit (10), a first compressor (21) and a second compressor (22) are arranged in parallel. The first compressor (21) is connected to both an expander (23) and a first electric motor (31), and is driven by both of the expander (23) and the first electric motor (31). On the other hand, the second compressor (22) is connected only to a second electric motor (32), and is driven by the second electric motor (32). In addition, the refrigerant circuit (10) is provided with a bypass line (40) which bypasses the expander (23). The bypass line (40) is provided with a bypass valve (41). And, the capacity of the second compressor (22) and the valve opening of the bypass valve (41) are regulated so that the COP of the refrigeration apparatus is improved after enabling the refrigeration apparatus to operate properly in any operation conditions.
摘要翻译： 制冷装置的制冷剂回路（10）充满二氧化碳作为制冷剂。 在制冷剂回路（10）中，并列配置有第一压缩机（21）和第二压缩机（22）。 第一压缩机21与膨胀机23和第一电动机31连接，由膨胀机23和第一电动机31二者驱动。 另一方面，第二压缩机22仅与第二电动机32连接，由第二电动机32驱动。 此外，制冷剂回路（10）设置有旁通膨胀机（23）的旁通管路（40）。 旁通管路（40）设置有旁通阀（41）。 并且，调节第二压缩机22的容量和旁通阀41的阀开度，使得能够使制冷装置在任何操作条件下正常工作，从而提高制冷装置的COP。
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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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