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1. 发明授权

US06776029B2 Oil content measuring device and refrigeration system using the same 失效
标题翻译：含油量测量装置和制冷系统采用相同的方法
公开(公告)号：US06776029B2
公开(公告)日：2004-08-17
申请号：US10271678
申请日：2002-10-15
申请人： Tadashi Hotta , Yukikatsu Ozaki , Toshio Hirata
发明人： Tadashi Hotta , Yukikatsu Ozaki , Toshio Hirata
IPC分类号： G01N3330
CPC分类号： F25B31/002 , F25B2309/061 , F25B2500/19 , F25B2700/03 , G01N33/30
摘要： An oil content measuring device measures the oil content of a refrigerant in a supercritical or a vapor phase state. A refrigeration system uses the oil content measuring device. The oil content measuring device has an electrostatic capacity measuring device for measuring an electrostatic capacity of the refrigerant containing a refrigerating machine oil, a density measuring device for measuring a density of at least one of the refrigerant and the refrigerating machine oil, a computing device for performing a computation on correlation characteristics between the electrostatic capacity and an oil content which indicates the ratio of the amount of the refrigerating machine oil to the amount of the refrigerant containing the refrigerating machine oil, using the density measured by the density measuring device. An oil content determining device determines an oil content at the measuring time from an electrostatic capacity using the correlation characteristics obtained by the computing device.
摘要翻译：含油量测量装置测量超临界或汽相状态的制冷剂的油含量。制冷系统使用含油量测量装置。含油量测量装置具有用于测量含有冷冻机油的制冷剂的静电容量的静电电容测量装置，用于测量至少一个制冷剂和冷冻机油的密度的浓度测量装置，用于利用密度测定装置测定的密度，对表示冷冻机油的量与含有冷冻机油的制冷剂的比例的静电电容与含油量之间的相关特性进行计算。油含量确定装置使用由计算装置获得的相关特性，从静电容量确定测量时刻的油含量。

2. 发明授权

US07334427B2 Ejector with tapered nozzle and tapered needle 有权
标题翻译：喷嘴采用锥形喷嘴和锥形针
公开(公告)号：US07334427B2
公开(公告)日：2008-02-26
申请号：US10791650
申请日：2004-03-02
申请人： Yukikatsu Ozaki , Tadashi Hotta , Hirotsugu Takeuchi
发明人： Yukikatsu Ozaki , Tadashi Hotta , Hirotsugu Takeuchi
IPC分类号： F25B1/06 , F25B41/06
CPC分类号： F25B9/008 , B60H2001/3298 , F04F5/04 , F04F5/461 , F25B41/00 , F25B2309/061 , F25B2341/0012 , F25B2341/0013 , F25B2500/01 , F25B2600/17
摘要： In an ejector, a nozzle includes a nozzle tapered section having an inner passage with a radial dimension reduced toward a nozzle outlet port, and a needle having a needle tapered section disposed in the inner passage. The needle tapered section has a cross sectional area reduced toward a downstream end of the needle, and the downstream end of the needle is positioned at a downstream side with respect to the nozzle outlet port. In addition, the nozzle tapered section has a taper angle (φ1) which is equal to or greater than a taper angle (φ2) of the needle tapered section. Therefore, a boundary face on the outside of a nozzle jet flow becomes in a balanced natural shape, and is controlled in accordance with an operating condition. Thus, the ejector cycle can be operated while keeping high efficiency, regardless of the thermal load of the ejector cycle.
摘要翻译：在喷射器中，喷嘴包括具有径向尺寸朝向喷嘴出口减小的内通道的喷嘴锥形部分和设置在内通道中的具有针锥形部分的针。针状锥形部具有朝向针的下游端减小的截面积，针的下游端位于相对于喷嘴出口的下游侧。此外，喷嘴锥形部具有等于或大于针锥形部的锥角（phi 2）的锥角（phi 1）。因此，喷嘴喷流的外侧的边界面成为平衡的自然形状，并且根据操作条件进行控制。因此，不管喷射器周期的热负荷如何，喷射器循环可以在保持高效率的同时运行。

3. 发明授权

US06604379B2 Ejector for ejector cycle system 有权
公开(公告)号：US06604379B2
公开(公告)日：2003-08-12
申请号：US10281690
申请日：2002-10-28
申请人： Tadashi Hotta , Yukikatsu Ozaki , Hiroshi Ishikawa , Hirotsugu Takeuchi
发明人： Tadashi Hotta , Yukikatsu Ozaki , Hiroshi Ishikawa , Hirotsugu Takeuchi
IPC分类号： F25B100
CPC分类号： F25B41/06 , F04F5/04 , F25B9/008 , F25B41/00 , F25B2309/061 , F25B2341/0012 , F25B2500/01
摘要： In an ejector used for an ejector cycle system, a nozzle has a first refrigerant passage, a second refrigerant passage, and a third refrigerant passage in this order in a refrigerant flow direction from a refrigerant inlet toward a refrigerant outlet of the nozzle. The first refrigerant passage, the second refrigerant passage and the third refrigerant passage are formed into cylindrical shapes, respectively, each having a constant passage diameter. Further, a pressure increasing portion of the ejector is also formed into a cylindrical shape having a constant passage diameter. Accordingly, the ejector can be readily manufactured in low cost.

4. 发明授权

US06574977B2 Heat pump cycle 有权
标题翻译：热泵循环
公开(公告)号：US06574977B2
公开(公告)日：2003-06-10
申请号：US09909539
申请日：2001-07-20
申请人： Yukikatsu Ozaki , Tadashi Hotta , Motohiro Yamaguchi , Yasushi Yamanaka
发明人： Yukikatsu Ozaki , Tadashi Hotta , Motohiro Yamaguchi , Yasushi Yamanaka
IPC分类号： F25B900
CPC分类号： F25B30/02 , B60H1/00792 , B60H1/00907 , B60H2001/00935 , B60H2001/00949 , B60L1/003 , B60L2270/46 , F25B6/04 , F25B9/008 , F25B13/00 , F25B2309/061 , F25B2313/02791 , F25B2339/047 , F25B2500/26 , F25B2600/0271 , F25B2600/17 , F25B2700/195 , F25B2700/2106 , F25B2700/2116
摘要： In a heat pump cycle, a first high-pressure side heat exchanger is disposed to perform a heat exchange between refrigerant discharged from a compressor and a first fluid, and a second high-pressure side heat exchanger is disposed to perform a heat exchanger between refrigerant from the first high-pressure side heat exchanger and a second fluid having a temperature lower than that of the first fluid. Accordingly, a heat quantity obtained from the heat pump cycle is the sum of a heat amount obtained from the first high-pressure side heat exchanger and a heat amount obtained from the second high-pressure side heat exchanger.
摘要翻译：在热泵循环中，设置第一高压侧热交换器，以对从压缩机排出的制冷剂与第一流体进行热交换，并且设置第二高压侧热交换器，以在制冷剂从第一高压侧热交换器和第二流体的温度低于第一流体的温度。因此，从热泵循环获得的热量是从第一高压侧热交换器获得的热量与从第二高压侧热交换器获得的热量的和。

5. 发明授权

US07178358B2 Vapor-compression refrigerant cycle system with refrigeration cycle and Rankine cycle 失效
标题翻译：具有制冷循环和兰金循环的蒸气压缩制冷剂循环系统
公开(公告)号：US07178358B2
公开(公告)日：2007-02-20
申请号：US10765761
申请日：2004-01-27
申请人： Atsushi Inaba , Yasushi Yamanaka , Shigeki Iwanami , Koichi Ban , Shigeru Hisanaga , Tadashi Hotta , Yukikatsu Ozaki , Kazuhide Uchida
发明人： Atsushi Inaba , Yasushi Yamanaka , Shigeki Iwanami , Koichi Ban , Shigeru Hisanaga , Tadashi Hotta , Yukikatsu Ozaki , Kazuhide Uchida
IPC分类号： F25B1/00 , F25B43/00 , F25B27/00
CPC分类号： F25B27/00 , F02G5/04 , F25B1/04 , F25B2400/04 , F25B2400/23 , F25B2600/2507 , F25B2700/04 , Y02T10/166
摘要： A vapor-compression refrigerant cycle system with a refrigeration cycle and a Rankine cycle includes a compressor, a radiator, a gas-liquid separator, a decompression device and an evaporator. In the vapor-compression refrigerant cycle system, a liquid pump is disposed for supplying the liquid refrigerant in the gas-liquid separator to a heater for heating the refrigerant, a cooling means is provided for cooling the liquid refrigerant to be sucked into the liquid pump, and an energy recovery unit for expanding the refrigerant flowing out of the heater is disposed to recover thermal energy in the refrigerant from the heater. When the Rankine cycle is set so that the energy recovery unit recovers the thermal energy, the cooling means cools the liquid refrigerant to be sucked into the liquid pump. Therefore, pumping efficiency of the liquid pump can be effectively improved.
摘要翻译：具有制冷循环和兰金循环的蒸汽压缩制冷剂循环系统包括压缩机，散热器，气液分离器，减压装置和蒸发器。在蒸汽压缩制冷剂循环系统中，设置液体泵，用于将气液分离器中的液体制冷剂供给到用于加热制冷剂的加热器，设置冷却装置以冷却要被吸入液体泵的液体制冷剂并且设置用于膨胀从加热器流出的制冷剂的能量回收单元，以从加热器回收制冷剂中的热能。当设置兰金循环使得能量回收单元恢复热能时，冷却装置冷却待吸入液体泵的液体制冷剂。因此，能够有效地提高液体泵的泵送效率。

6. 发明授权

US06543238B2 Refrigerant cycle system with expansion energy recovery 失效
标题翻译：制冷循环系统具有扩容能量回收
公开(公告)号：US06543238B2
公开(公告)日：2003-04-08
申请号：US09892109
申请日：2001-06-26
申请人： Yasushi Yamanaka , Yasutaka Kuroda , Shin Nishida , Motohiro Yamaguchi , Yukikatsu Ozaki , Tadashi Hotta , Sadahisa Onimaru , Mitsuo Inagaki
发明人： Yasushi Yamanaka , Yasutaka Kuroda , Shin Nishida , Motohiro Yamaguchi , Yukikatsu Ozaki , Tadashi Hotta , Sadahisa Onimaru , Mitsuo Inagaki
IPC分类号： F28B900
CPC分类号： F04C23/008 , A63B2053/023 , F04C18/0215 , F04C23/003 , F04C29/0064 , F25B1/10 , F25B9/008 , F25B9/06 , F25B11/02 , F25B2309/061 , F25B2341/0661 , F25B2341/0662 , F25B2400/04 , F25B2400/075 , F25B2400/13 , F25B2400/14 , F25B2400/141 , F25B2600/17
摘要： In a refrigerant cycle system, refrigerant compressed in a first compressor is cooled and condensed in a radiator, and refrigerant from the radiator branches into main-flow refrigerant and supplementary-flow refrigerant. The main-flow refrigerant is decompressed in an expansion unit while expansion energy of the main-flow refrigerant is converted to mechanical energy. Thus, the enthalpy of the main-flow refrigerant is reduced along an isentropic curve. Therefore, even when the pressure within the evaporator increases, refrigerating effect is prevented from being greatly reduced in the refrigerant cycle system. Further, refrigerant flowing into the radiator is compressed using the converted mechanical energy. Thus, coefficient of performance of the refrigerant cycle system is improved.
摘要翻译：在制冷剂循环系统中，在第一压缩机中压缩的制冷剂在散热器中冷却冷凝，来自散热器的制冷剂分支成主流制冷剂和辅助流动制冷剂。主流制冷剂在膨胀单元中减压，主流制冷剂的膨胀能转化为机械能。因此，主流制冷剂的焓沿着等熵曲线减小。因此，即使当蒸发器内的压力增加时，制冷剂循环系统也不会大大降低制冷效果。此外，流入散热器的制冷剂使用转换后的机械能进行压缩。因此，制冷剂循环系统的性能系数提高。

7. 发明授权

US06321564B1 Refrigerant cycle system with expansion energy recovery 失效
公开(公告)号：US06321564B1
公开(公告)日：2001-11-27
申请号：US09524676
申请日：2000-03-13
申请人： Yasushi Yamanaka , Yasutaka Kuroda , Shin Nishida , Motohiro Yamaguchi , Yukikatsu Ozaki , Tadashi Hotta , Sadahisa Onimaru , Mitsuo Inagaki
发明人： Yasushi Yamanaka , Yasutaka Kuroda , Shin Nishida , Motohiro Yamaguchi , Yukikatsu Ozaki , Tadashi Hotta , Sadahisa Onimaru , Mitsuo Inagaki
IPC分类号： F25B110
CPC分类号： F04C23/008 , A63B2053/023 , F04C18/0215 , F04C23/003 , F04C29/0064 , F25B1/10 , F25B9/008 , F25B9/06 , F25B11/02 , F25B2309/061 , F25B2341/0661 , F25B2341/0662 , F25B2400/04 , F25B2400/075 , F25B2400/13 , F25B2400/14 , F25B2400/141 , F25B2600/17
摘要： In a refrigerant cycle system, refrigerant compressed in a first compressor is cooled and condensed in a radiator, and refrigerant from the radiator branches into main-flow refrigerant and supplementary-flow refrigerant. The main-flow refrigerant is decompressed in an expansion unit while expansion energy of the main-flow refrigerant is converted to mechanical energy. Thus, the enthalpy of the main-flow refrigerant is reduced along an isentropic curve. Therefore, even when the pressure within the evaporator increases, refrigerating effect is prevented from being greatly reduced in the refrigerant cycle system. Further, refrigerant flowing into the radiator is compressed using the converted mechanical energy. Thus, coefficient of performance of the refrigerant cycle system is improved.

8. 发明授权

US06230506B1 Heat pump cycle system 有权
标题翻译：热泵循环系统
公开(公告)号：US06230506B1
公开(公告)日：2001-05-15
申请号：US09378833
申请日：1999-08-23
申请人： Shin Nishida , Yukikatsu Ozaki , Naruhide Kimura , Tadashi Hotta , Motohiro Yamaguchi
发明人： Shin Nishida , Yukikatsu Ozaki , Naruhide Kimura , Tadashi Hotta , Motohiro Yamaguchi
IPC分类号： F25B4104
CPC分类号： F25B9/008 , B60H1/00907 , B60H1/3205 , B60H1/3211 , B60H1/3213 , B60H2001/00935 , B60H2001/3254 , B60H2001/3255 , B60H2001/3261 , B60H2001/3264 , B60H2001/3272 , B60H2001/3282 , B60H2001/3285 , F25B5/04 , F25B6/04 , F25B13/00 , F25B41/062 , F25B2309/061 , F25B2341/063 , F25B2600/0253 , F25B2600/17
摘要： A heat pump cycle system which can switches cooling operation and heating operation for a compartment includes a first inside heat exchanger and a second inside heat exchanger disposed in an air conditioning case. The first inside heat exchanger is disposed in the air conditioning case at a downstream air side of the second inside heat exchanger, while being arranged in line in a flow direction of refrigerant. The first inside heat exchanger is upstream from the second inside heat exchanger in the flow direction of refrigerant during the heating operation. In the heat pump cycle system, an expansion valve is controlled so that coefficient of performance in each operation becomes approximately maximum. Thus, during the heating operation of the heat pump cycle system, a lower limit temperature of air blown from the inside heat exchangers can be increased so that temperature of air blown into the compartment is increased, while the coefficient of performance is improved.
摘要翻译：能够切换室内的制冷运转和加热运转的热泵循环系统包括设置在空调箱内的第一内部热交换器和第二内部热交换器。第一内侧热交换器在第二内侧热交换器的下游侧的空调壳体中配置成沿制冷剂的流动方向配置。第一内侧热交换器在制热运转时在制冷剂的流动方向上从第二内侧热交换器的上游侧。在热泵循环系统中，控制膨胀阀，使得每个操作中的性能系数近似为最大。因此，在热泵循环系统的加热运转时，可以提高从内部热交换器吹出的空气的下限温度，从而提高吹入室内的空气的温度，同时提高性能系数。

9. 发明授权

US06910343B2 Vapor-compression refrigerant cycle with ejector 有权
标题翻译：带喷射器的蒸气压缩制冷剂循环
公开(公告)号：US06910343B2
公开(公告)日：2005-06-28
申请号：US10819240
申请日：2004-04-06
申请人： Yukikatsu Ozaki , Hirotsugu Takeuchi
发明人： Yukikatsu Ozaki , Hirotsugu Takeuchi
IPC分类号： F25B1/00 , F25B9/00 , F25B41/00 , F25B1/06
CPC分类号： F25B9/008 , B60H2001/3298 , F25B41/00 , F25B2309/061 , F25B2341/0012 , F25B2341/0013 , F25B2341/063 , F25B2341/0661 , F25B2400/0411 , F25B2400/23 , F25B2600/2513 , F25B2700/1933 , F25B2700/21174 , F25B2700/21175
摘要： In an ejector cycle having an ejector, a decompression amount of refrigerant between a gas-liquid separator and an evaporator is adjusted by a differential pressure control valve, so that a pressure increasing amount in a pressure increasing portion of the ejector is controlled to be equal to or lower than a predetermined amount. Therefore, a suction pressure of refrigerant to be sucked to the compressor can be restricted from being excessively increased in accordance with the increase of the pressure increasing amount in the ejector, and it can prevent heat radiating capacity of a radiator from being decreased. Thus, a sufficient cooling capacity can be always obtained in the ejector cycle.
摘要翻译：在具有喷射器的喷射器循环中，通过差压控制阀调节气液分离器和蒸发器之间的减压量的制冷剂，使得喷射器的增压部分中的增压量被控制为相等达到或低于预定量。因此，可以根据喷射器中的增压量的增加来限制吸入压缩机的制冷剂的吸入压力过大，能够防止散热器的散热能力下降。因此，在喷射器循环中可以始终获得足够的冷却能力。

10. 发明授权

US6092379A Supercritical refrigerating circuit 有权
标题翻译：超临界制冷回路
公开(公告)号：US6092379A
公开(公告)日：2000-07-25
申请号：US352676
申请日：1999-07-14
申请人： Shin Nishida , Naruhide Kimura , Yukikatsu Ozaki
发明人： Shin Nishida , Naruhide Kimura , Yukikatsu Ozaki
IPC分类号： F25B1/00 , B60H1/32 , F25B5/02 , F25B9/00 , F25B41/06
CPC分类号： B60H1/3232 , B60H1/323 , F25B41/062 , F25B5/02 , F25B9/008 , F25B2309/061 , F25B2341/063 , F25B2341/0653 , F25B2600/17 , Y02B30/72
摘要： The supercritical refrigerating circuit has a first pressure reducing valve for reducing pressure of refrigerant flows into a first evaporator and a second pressure reducing valve for reducing pressure of refrigerant flows into a second evaporator. The first pressure reducing valve further controls refrigerant pressure at an outlet of a gas cooler. Accordingly, the supercritical refrigerant circuit is controlled without increasing the number of the pressure reducing valve.
摘要翻译：超临界制冷回路具有用于减少制冷剂流入第一蒸发器的压力的第一减压阀和用于减少制冷剂流入第二蒸发器的压力的第二减压阀。第一减压阀进一步控制气体冷却器出口处的制冷剂压力。因此，不增加减压阀的数量来控制超临界制冷剂回路。

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