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公开(公告)号：US20090277213A1
公开(公告)日：2009-11-12
申请号：US12226135
申请日：2007-04-16
IPC分类号： F25B43/02
CPC分类号： F25B31/004 , F25B9/06 , F25B2341/0016 , F25B2700/03
摘要： A compressor (20) and an expander (30) are provided in a refrigerant circuit (11) of an air conditioner (10). 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). Internal spaces of a compressor casing (24) and an expander casing (34) communicate with each other through an equalizing pipe (41). An oil pipe (42) connecting the compressor casing (24) and the expander casing (34) is provided with an oil amount adjusting valve (52) operated on the basis of an output signal of an oil level sensor (51). When the oil amount adjusting valve (52) is opened, the oil reservoir (27) in the compressor casing (24) and the oil reservoir (37) in the expander casing (34) communicate with each other to allow the refrigerator oil to flow through the oil pipe (42).
摘要翻译： 在空调装置（10）的制冷剂回路（11）上设有压缩机（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）的内部空间通过均衡管道（41）相互连通。 连接压缩机壳体（24）和膨胀机壳体（34）的油管（42）设置有基于油位传感器（51）的输出信号而操作的油量调节阀（52）。 当油量调节阀（52）打开时，压缩机壳体（24）中的储油部（27）和膨胀机壳体（34）中的储油部（37）相互连通，使冷冻机油流通 通过油管（42）。
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公开(公告)号：US20090183524A1
公开(公告)日：2009-07-23
申请号：US12302792
申请日：2007-06-08
IPC分类号： F25B1/00
CPC分类号： F25B9/06 , F25B2309/061 , F25B2500/26 , F25B2600/021 , Y02B30/741
摘要： A refrigerating apparatus (10) includes a refrigerant circuit (11) in which a compressor (20), a radiator (14), an expander (30), and a cooler (15) are connected to each other in order through refrigerant pipes, in which a rotating shaft (22) of a motor is connected to a compression mechanism (21) included in the compressor (20) while a rotating shaft (32) of a generator (33) is connected to an expansion mechanism (31) included in the expander (30). The refrigerating apparatus (10) further includes an electric power input mechanism (41, 43) for allowing the generator (33) to function as a motor. This secures the operation of the expander (30) at a start of the apparatus to secure the start of a system, thereby attaining reliable control of the start-up performance at the start.
摘要翻译： 制冷装置（10）包括制冷剂回路（11），压缩机（20），散热器（14），膨胀机（30）和冷却器（15）依次通过制冷剂管道彼此连接， 其中电动机的旋转轴（22）连接到包括在压缩机（20）中的压缩机构（21），同时发电机（33）的旋转轴（32）连接到包括的膨胀机构（31） 在扩展器（30）中。 制冷装置（10）还包括用于允许发电机（33）用作电动机的电力输入机构（41,43）。 这确保了在设备启动时扩展器（30）的操作以确保系统的启动，从而在开始时实现对启动性能的可靠控制。
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公开(公告)号：US20080274001A1
公开(公告)日：2008-11-06
申请号：US10592869
申请日：2005-03-15
CPC分类号： F16J15/324 , F01C1/3564 , F01C19/08
摘要： The upper and lower end surfaces (67b, 67c) of a rotary piston (67) are formed with annular seal grooves (91) extending along the annular end surfaces (67b, 67c), and an annular lip seal (92) is fitted in each of the seal grooves (91). Thereby, the lubricating oil fed from oil feed grooves (49) in the shaft (40) rarely flows from between the upper and lower end surfaces (67b, 67c) of the rotary piston (67) and front and rear heads (61, 62) and into the fluid chamber (65) of a cylinder (63), so that shortage of lubricating oil is eliminated.
摘要翻译： 旋转活塞（67）的上下端面（67b，67c）形成有沿着环形端面（67b，67c）延伸的环形密封槽（91）和环形唇形密封件 ）安装在每个密封槽（91）中。 因此，从轴40中的供油槽49供给的润滑油很少从旋转活塞67的上端面67b，下端面67c和前后端头61 ，62）并进入气缸（63）的流体室（65），从而消除了润滑油的不足。
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公开(公告)号：US07434414B2
公开(公告)日：2008-10-14
申请号：US10541590
申请日：2003-12-25
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：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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