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公开(公告)号：US20090126398A1
公开(公告)日：2009-05-21
申请号：US11886996
申请日：2006-03-07
IPC分类号： F25B1/00
CPC分类号： F25B9/06 , F25B1/04 , F25B13/00 , F25B41/003 , F25B2309/061 , F25B2313/02742 , F25B2400/14 , F25B2500/01 , F25B2500/13
摘要： A buffer container (71) is connected to an outflow port (33) of an expansion mechanism (60). The buffer container (71) is shaped like a cylinder extending in the direction of refrigerant flow and has a greater transverse cross sectional area than that of the outflow port (33). The buffer container (71) contains therein a flow stabilizing plate (75) having a mesh part (75a) shaped like a circular plate. The variation in pressure is reduced by pressure supply and pressure absorption by the buffer container (71) and, in addition, refrigerant droplets are made fine in size during passage through the flow stabilizing plate (75).
摘要翻译： 缓冲容器（71）与膨胀机构（60）的流出口（33）连接。 缓冲容器（71）的形状类似于在制冷剂流动方向上延伸的圆柱体，并且具有比流出口（33）更大的横截面积。 缓冲容器（71）内装有流动稳定板（75），该流动稳定板（75）具有形状为圆形的网状部分（75a）。 通过缓冲容器（71）的压力供给和压力吸收来降低压力变化，另外，在通过流动稳定板（75）的过程中制冷剂液滴的尺寸也变细。
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公开(公告)号：US08245528B2
公开(公告)日：2012-08-21
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：US08122735B2
公开(公告)日：2012-02-28
申请号：US12226433
申请日：2007-04-16
IPC分类号： F25B43/02
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：US07802447B2
公开(公告)日：2010-09-28
申请号：US11664302
申请日：2005-09-30
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：US20090113907A1
公开(公告)日：2009-05-07
申请号：US11662206
申请日：2005-09-09
申请人： Katsumi Sakitani , Michio Moriwaki , Yume Inokuchi , Tetsuya Okamoto , Yoshinari Sasaki , Eiji Kumakura , Masakazu Okamoto
发明人： Katsumi Sakitani , Michio Moriwaki , Yume Inokuchi , Tetsuya Okamoto , Yoshinari Sasaki , Eiji Kumakura , Masakazu Okamoto
CPC分类号： F25B13/00 , F25B1/04 , F25B9/008 , F25B9/06 , F25B2309/061 , F25B2313/0272 , F25B2600/17 , F25B2600/2513
摘要： A refrigeration apparatus having a refrigerant circuit (20) for performing a vapor compression refrigeration cycle is disclosed. Refrigerant in a wet state, which provides an optimum coefficient of performance (COP) for a present operating condition, is drawn into the compressor (31). If the operating condition changes, the opening of an expansion valve (23) is adjusted such that the suction refrigerant of the compressor (31) is brought into a wet state which provides an optimum coefficient of performance for a new operating condition.
摘要翻译： 公开了一种具有用于进行蒸气压缩制冷循环的制冷剂回路（20）的制冷装置。 将处于工作状态的最佳性能系数（COP）提供到湿态的制冷剂被吸入压缩机（31）。 如果操作条件改变，则调节膨胀阀（23）的打开，使得压缩机（31）的吸入制冷剂处于潮湿状态，从而为新的操作条件提供最佳的性能系数。
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公开(公告)号：US20090007590A1
公开(公告)日：2009-01-08
申请号：US10593038
申请日：2005-03-09
IPC分类号： F25B41/00
CPC分类号： F25B9/06 , F01C1/46 , F01C11/004 , F25B1/04 , F25B9/008 , F25B2309/061
摘要： The low-side pressure of a refrigeration cycle and the refrigerant temperature at the exit of a gas cooler under reference operating conditions are employed as a reference low pressure and a reference refrigerant temperature, respectively, and the high-side pressure of the refrigeration cycle at which the COP of the refrigeration cycle reaches a maximum value under the reference operating conditions is employed as a reference high pressure. In this case, the volume v2 of a first fluid chamber (72) in the expander (60) just after the closing off of fluid communication from its inlet channel and the volume v3 of a second fluid chamber (82) in the expander (60) just before the provision of fluid communication with its outlet channel are set to v2=ρ1v1r/ρ2 and v3=ρ2v2/ρ3, respectively, where ρ1 is the density of saturated gas refrigerant at the reference low pressure, ρ2 is the density of refrigerant at the reference high pressure and the reference refrigerant temperature, ρ3 is the density of refrigerant adiabatically expanded from a condition of the reference high pressure and the reference refrigerant temperature into a condition of the reference low pressure, v1 is the volume of the fluid chamber in the compressor just after the closing off of fluid communication from its suction channel, and r is the rotational speed ratio of the compressor to the expander.
摘要翻译： 在参考操作条件下，制冷循环的低侧压力和气体冷却器出口处的制冷剂温度分别用作参考低压和参考制冷剂温度，并且制冷循环的高侧压力 在参考操作条件下制冷循环的COP达到最大值的COP被用作参考高压。 在这种情况下，膨胀器（60）中刚刚从其入口通道关闭流体连通之后的第一流体室（72）的体积v2和膨胀器（60）中的第二流体室（82）的体积v3 ）恰好在与其出口通道进行流体连通之前分别设定为v2 = rho1v1r / rho2和v3 = rho2v2 / rho3，其中rho1是参考低压时饱和气体制冷剂的密度，rho2是制冷剂的密度 在参考高压和参考制冷剂温度下，rho3是从参考高压和参考制冷剂温度的条件下绝热膨胀到制冷剂温度的制冷剂的密度，v1是流体室的体积 刚刚从其吸入通道关闭流体连通之后的压缩机，r是压缩机与膨胀机的转速比。
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公开(公告)号：US20070196227A1
公开(公告)日：2007-08-23
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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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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