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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：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：US20100074769A1
公开(公告)日：2010-03-25
申请号：US12515055
申请日：2007-11-21
申请人： Eiji Kumakura , Katsumi Sakitani
发明人： Eiji Kumakura , Katsumi Sakitani
CPC分类号： F04C23/008 , F01C1/322 , F01C11/004 , F01C13/04 , F01C21/06 , F04C18/322 , F04C23/02
摘要： A fluid machine includes a casing, a compression mechanism for compressing refrigerant, an expansion mechanism for expanding refrigerant, and a rotary shaft connecting the compression mechanism and the expansion mechanism The compression mechanism, the expansion mechanism and the rotary shaft are disposed in the casing. A heat insulator partitions an internal space of the casing into a first space with the expansion mechanism disposed therein and a second space with the compression mechanism disposed therein. The rotary shaft passes through the heat insulator. An elastically deformable seal element seals a clearance between an outer periphery of the heat insulator and an inner periphery of the casing.
摘要翻译： 流体机械包括壳体，用于压缩制冷剂的压缩机构，用于膨胀制冷剂的膨胀机构和连接压缩机构和膨胀机构的旋转轴。压缩机构，膨胀机构和旋转轴设置在壳体中。 绝热体将壳体的内部空间分隔成具有设置在其中的膨胀机构的第一空间和设置有压缩机构的第二空间。 旋转轴穿过绝热体。 可弹性变形的密封元件密封绝热体的外周和壳体的内周之间的间隙。
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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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