公开(公告)号：US5890370A

公开(公告)日：1999-04-06

申请号：US789210

申请日：1997-01-24

申请人： Hisayoshi Sakakibara ,  Shin Nishida ,  Sadahisa Onimaru ,  Yuichi Sakajo ,  Yukikatsu Ozaki

发明人： Hisayoshi Sakakibara ,  Shin Nishida ,  Sadahisa Onimaru ,  Yuichi Sakajo ,  Yukikatsu Ozaki

IPC分类号： F25B1/00 ,  C09K5/04 ,  F25B9/00 ,  F25B13/00 ,  F25B41/06 ,  G05D16/06

CPC分类号： C09K5/041 ,  F25B13/00 ,  F25B41/062 ,  F25B9/008 ,  G05D16/0619 ,  G05D16/0644 ,  C09K2205/106 ,  F25B2309/061 ,  F25B2313/0314 ,  F25B2341/063 ,  F25B2341/0653 ,  F25B2600/0253 ,  F25B2600/17 ,  F25B2700/2104 ,  Y02B30/72 ,  Y02P20/124 ,  Y02P20/544

摘要： A refrigerating system of vapor compression type operating at a super critical area, while obtaining an increased efficiency. The refrigerating system includes a pressure control means for controlling the temperature and the pressure at the outlet of a heat emitter. The pressure control valve responds to a pressure difference between the inlet pressure of the refrigerant to the pressure control valve and the pressure in an outwardly sealed chamber in which the refrigerant is filled such that, with respect to the volume of the chamber under closed condition of the pressure control valve, a density of the refrigerant is in a range between a density of a saturated liquid at a temperature of 0.degree. C. and a density at the critical point of the refrigerant. As a result, the pressure and the temperature at the outlet of the heat emitter is controlled substantially along the optimum control line .eta.max, resulting in an effective execution of a refrigerating cycle at the critical area.

摘要翻译： 一种在超临界区域工作的蒸汽压缩式制冷系统，同时获得更高的效率。 制冷系统包括用于控制发热体出口处的温度和压力的压力控制装置。 压力控制阀响应于制冷剂与压力控制阀的入口压力之间的压力差和在其中填充制冷剂的向外密封的室中的压力，使得相对于在闭合状态下的室的体积 压力控制阀，制冷剂的密度在0℃的饱和液体的密度与制冷剂的临界点的密度之间的范围内。 结果，发热体出口处的压力和温度基本上沿着最佳控制线eta max被控制，从而在关键区域有效地执行制冷循环。

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。

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.

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。

公开(公告)号：US06505476B1

公开(公告)日：2003-01-14

申请号：US09694378

申请日：2000-10-23

申请人： Shin Nishida ,  Motohiro Yamaguchi ,  Satoshi Itoh ,  Yasutaka Kuroda ,  Yoshitaka Tomatsu ,  Yasushi Yamanaka ,  Yukikatsu Ozaki

发明人： Shin Nishida ,  Motohiro Yamaguchi ,  Satoshi Itoh ,  Yasutaka Kuroda ,  Yoshitaka Tomatsu ,  Yasushi Yamanaka ,  Yukikatsu Ozaki

IPC分类号： F25B4900

CPC分类号： F25B9/008 ,  F25B40/00 ,  F25B41/062 ,  F25B2309/061 ,  F25B2400/16 ,  F25B2600/021 ,  F25B2600/17 ,  F25B2700/2106 ,  F25B2700/21161 ,  Y02B30/741

摘要： In a refrigerant cycle system, a control unit controls both a refrigerant amount discharged from a compressor and an opening degree of a pressure control valve so that theoretical efficiency of a super-critical refrigerant cycle and efficiency of the compressor are improved. Therefore, the effective coefficient of performance of the refrigerant cycle is improved, while necessary capacity of components of the refrigerant cycle is obtained.

摘要翻译： 在制冷剂循环系统中，控制单元控制从压缩机排出的制冷剂量和压力控制阀的开度，从而提高了超临界制冷剂循环的理论效率和压缩机的效率。 因此，提高了制冷剂循环的有效性能系数，同时获得制冷剂循环的部件的必要容量。

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。

公开(公告)号：US6000233A

公开(公告)日：1999-12-14

申请号：US150318

申请日：1998-09-09

申请人： Shin Nishida ,  Hisayoshi Sakakibara ,  Yasutaka Kuroda

发明人： Shin Nishida ,  Hisayoshi Sakakibara ,  Yasutaka Kuroda

IPC分类号： F25B1/00 ,  C10M145/24 ,  C10M171/00 ,  C10N40/30 ,  F25B9/00 ,  F25B31/00 ,  F25B43/00 ,  F25B41/00

CPC分类号： F25B31/002 ,  C10M171/008 ,  F25B43/006 ,  F25B9/008 ,  C10M2209/00 ,  C10M2209/02 ,  C10M2209/10 ,  C10M2209/103 ,  F25B2309/061

摘要： In a CO.sub.2 refrigerant cycle, a lubricating oil for a compressor has a compatibility relative to CO.sub.2 refrigerant, and the compatibility of the lubricating oil relative to the CO.sub.2 refrigerant at a pressure lower than a critical pressure of the CO.sub.2 refrigerant is lower than that at a pressure higher than the critical pressure of the CO.sub.2 refrigerant. Thus, in a low-pressure side such as an accumulator of the CO.sub.2 refrigerant cycle, because a liquid lubricating oil is separated with a liquid CO.sub.2 refrigerant, only the lubricating oil can be readily introduced into a suction side of the compressor, and it can prevent the liquid CO.sub.2 refrigerant from being sucked into the compressor. As a result, it can prevent a damage to the compressor while preventing deterioration of coefficient of performance of the CO.sub.2 refrigerant cycle.

摘要翻译： 在二氧化碳制冷剂循环中，用于压缩机的润滑油具有相对于二氧化碳制冷剂的相容性，并且在低于二氧化碳制冷剂的临界压力的压力下，润滑油相对于二氧化碳制冷剂的相容性低于二氧化碳制冷剂 压力高于CO2制冷剂的临界压力。 因此，在CO 2制冷剂循环的蓄压器等低压侧，由于液体润滑油与液体CO 2制冷剂分离，所以只能将润滑油引入压缩机的吸入侧， 防止液体CO2制冷剂被吸入压缩机。 结果，能够防止压缩机的损坏，同时防止二氧化碳制冷剂循环的性能系数的劣化。

公开(公告)号：US06370896B1

公开(公告)日：2002-04-16

申请号：US09441965

申请日：1999-11-17

申请人： Hisayoshi Sakakibara ,  Shin Nishida ,  Masahiko Ito ,  Kenichi Fujiwara ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

发明人： Hisayoshi Sakakibara ,  Shin Nishida ,  Masahiko Ito ,  Kenichi Fujiwara ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

IPC分类号： F25D1702

CPC分类号： F25B40/06 ,  F24H4/04 ,  F25B9/008 ,  F25B30/02 ,  F25B40/00 ,  F25B2309/061 ,  F25B2339/047 ,  F25B2600/0253 ,  F25B2600/17 ,  F25B2600/2501 ,  F25B2700/21151 ,  F25B2700/21161 ,  Y02B30/741

摘要： A hot water supply system wherein a flow of a refrigerant on a high-pressure side of a supercritical heat pump cycle and a flow of hot water are oppositely directed, and wherein water heated by the refrigerant on the high-pressure side is stored in heat insulating tanks of a vacuous and double structure. Water is heated with heat absorbed from the atmosphere and by the supercritical heat pump cycle having a high heat exchange efficiency &eegr;, to reduce the power required to heat the water. Therefore, hot water can be generated even in the daytime during peak power rates. Accordingly, because it is unnecessary to store hot water for daytime use in insulated tanks, system space requirements are reduced.

摘要翻译： 一种热水供应系统，其中超临界热泵循环的高压侧的制冷剂的流动和热水的流动相反地指向，并且其中由高压侧的制冷剂加热的水储存在热 真空和双重结构的绝缘罐。 用大气吸收的热量和具有高热交换效率η的超临界热泵循环对水进行加热，以减少加热水所需的功率。 因此，即使在峰值功率时的白天，也可能产生热水。 因此，由于不需要在绝热罐中储存白天用的热水，因此减少了系统空间要求。

公开(公告)号：US5983657A

公开(公告)日：1999-11-16

申请号：US13345

申请日：1998-01-26

申请人： Yoshinori Murata ,  Hisayoshi Sakakibara ,  Shin Nishida ,  Yasutaka Kuroda

发明人： Yoshinori Murata ,  Hisayoshi Sakakibara ,  Shin Nishida ,  Yasutaka Kuroda

IPC分类号： F25B49/02 ,  B60H1/32 ,  F25B1/00

CPC分类号： B60H1/3225 ,  F25B2309/061

摘要： An air conditioning system having an evaporator 8 at a location upstream from a compressor. When a compressor is stopped, a refrigerant inlet is closed by an electromagnetic valve 28 and a refrigerant outlet is closed by a check valve 29. A pressure in the closed passageway is detected by a pressure sensor 22. A leakage of refrigerant at the evaporator is reliably detected, which allows the leakage of the refrigerant to be quickly noticed.

摘要翻译： 一种在压缩机上游位置具有蒸发器8的空调系统。 当压缩机停止时，制冷剂入口被电磁阀28关闭，制冷剂出口由止回阀29关闭。封闭通道中的压力由压力传感器22检测。制冷剂在蒸发器处的泄漏是 可靠地检测，这允许快速注意到制冷剂的泄漏。

公开(公告)号：US5918475A

公开(公告)日：1999-07-06

申请号：US722607

申请日：1996-09-27

申请人： Hisayoshi Sakakibara ,  Shin Nishida

发明人： Hisayoshi Sakakibara ,  Shin Nishida

IPC分类号： B60H1/00 ,  B60H1/32 ,  F25D17/04 ,  F25B49/00

CPC分类号： B60H1/008 ,  B60H1/00978 ,  B60H1/3225 ,  F25B2400/12

摘要： According to the present invention, when leakage of refrigerant is detected during operation of an air conditioning apparatus for a vehicle, air outlets for a passenger and a solenoid valve for an air passage are closed. Accordingly, a compressor is stopped after a predetermined time has elapsed since the solenoid valve is closed. In this way, refrigerant within an evaporator is sucked and discharged. Consequently, an amount of refrigerant leaking from an air conditioner casing due to damage of the evaporator can be reduced.

摘要翻译： 根据本发明，在车辆用空调装置的运转中检测到制冷剂的泄漏时，乘客的出风口和空气通路的电磁阀被封闭。 因此，从电磁阀关闭起经过了规定时间后，压缩机停止。 以这种方式，蒸发器内的制冷剂被吸入和排出。 因此，可以减少由于蒸发器的损坏而从空调壳体泄漏的制冷剂量。