公开(公告)号：US06418737B1

公开(公告)日：2002-07-16

申请号：US09656487

申请日：2000-09-07

申请人： Jyouji Kuroki ,  Hisayoshi Sakakibara ,  Masahiko Ito ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

发明人： Jyouji Kuroki ,  Hisayoshi Sakakibara ,  Masahiko Ito ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

IPC分类号： F24H100

CPC分类号： F25B9/008 ,  F24H4/04 ,  F25B41/062 ,  F25B47/02 ,  F25B2309/061 ,  F25B2339/047 ,  F25B2341/0653 ,  F25B2500/05 ,  Y02B30/72

摘要： A heat pump type hot-water supply system performs an ordinary operation for heating liquid stored in a reservoir by circulating the liquid in a heat exchanger for supplying hot water. When an outlet temperature of an exterior heat exchanger is lowered to about −5° C., the ordinary operation is switched to a defrosting operation, and an opening degree of an expansion valve is decreases as compared to that at the ordinary operation. Accordingly, hot gas discharged from a compressor radiates a decreased amount of thermal energy in the heat exchanger for supplying the hot gas. Hot gas discharged from the compressor can reach the exterior heat exchanger without lowering its temperature largely to perform defrosting of the exterior heat exchanger.

摘要翻译： 热泵式热水供给系统通过在用于供给热水的热交换器中使液体循环来进行加热存储在储液器中的液体的通常操作。 当外部热交换器的出口温度降低至约-5℃时，与常规操作相比，普通操作切换到除霜操作，并且膨胀阀的开度减小。 因此，从压缩机排出的热气体在用于供给热气体的热交换器中散热量减少。 从压缩机排出的热气体可以在不降低其温度的情况下到达外部热交换器，以进行外部热交换器的除霜。

公开(公告)号：US06467289B2

公开(公告)日：2002-10-22

申请号：US09873657

申请日：2001-06-04

申请人： Jyouji Kuroki ,  Hisayoshi Sakakibara ,  Tomohisa Yoshimi ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

发明人： Jyouji Kuroki ,  Hisayoshi Sakakibara ,  Tomohisa Yoshimi ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

IPC分类号： F25D1702

CPC分类号： F24D19/1054 ,  F24F11/47 ,  F24H4/04 ,  F25B9/008 ,  F25B30/02 ,  F25B41/062 ,  F25B49/027 ,  F25B2309/061 ,  F25B2339/047 ,  F25B2600/0253 ,  F25B2600/17 ,  F25B2600/2513 ,  F25B2700/2106 ,  F25B2700/2116 ,  F25B2700/21161 ,  F25B2700/21174 ,  F25B2700/21175 ,  G05D23/1923 ,  Y02B30/741

摘要： In a hot-water supply system with a heat pump cycle, a control unit controls operation of an expansion valve based on a temperature difference between a refrigerant temperature at an outlet side of a refrigerant passage in a water heat exchanger and a water temperature at an inlet side of a water passage in the water heat exchanger. When the expansion valve is controlled in a direction increasing a valve opening degree, the control unit sets an upper limit opening degree of the expansion valve, for obtaining a refrigerant pressure corresponding to a target hot-water temperature, and controls the expansion valve in an opening degree range smaller than the upper limit opening degree.

摘要翻译： 在具有热泵循环的热水供给系统中，控制单元基于水热交换器的制冷剂通路的出口侧的制冷剂温度与水热交换器的水温的温差来控制膨胀阀的运转 在水热交换器中的水通道的入口侧。 当膨胀阀被控制在增加阀开度的方向时，控制单元设定膨胀阀的上限开度，以获得与目标热水温度相对应的制冷剂压力，并将膨胀阀控制在 开度范围小于上限开度。

公开(公告)号：US06430949B1

公开(公告)日：2002-08-13

申请号：US09837107

申请日：2001-04-18

申请人： Shinya Noro ,  Hisayoshi Sakakibara ,  Jyouji Kuroki ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

发明人： Shinya Noro ,  Hisayoshi Sakakibara ,  Jyouji Kuroki ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

IPC分类号： F25B3904

摘要： In a heat-pump water heater, an ECU sets a target temperature difference between water flowing into a water heat exchanger and refrigerant flowing out from the water heat exchanger, and controls a valve opening degree of an expansion valve so that the target temperature difference is obtained. When a refrigerant temperature discharged from a compressor is higher than a predetermined value, the target temperature difference is increased until the refrigerant temperature discharged from the compressor becomes lower than the predetermined value. Further, when water-heating capacity is decreased due to the increase of the target temperature difference, a rotation speed of the compressor is increased.

公开(公告)号：US06467288B2

公开(公告)日：2002-10-22

申请号：US09892252

申请日：2001-06-27

申请人： Jyouji Kuroki ,  Hisayoshi Sakakibara ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

发明人： Jyouji Kuroki ,  Hisayoshi Sakakibara ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

IPC分类号： F25B4100

CPC分类号： F25B41/04 ,  F25B9/008 ,  F25B30/02 ,  F25B2309/061 ,  F25B2339/047 ,  F25B2600/0253 ,  F25B2600/17 ,  F25B2700/2116 ,  F25B2700/21161 ,  F25B2700/21174 ,  F25B2700/21175 ,  Y02B30/741

摘要： In a heat-pump water heater, a control unit has a heat-radiation determining means for determining a heat radiation from refrigerant to outside air in an air heat exchanger based on a water temperature flowing into a water heat exchanger, and the control unit selectively performs a general cycle operation and a bypass operation in accordance with a determination result of the heat-radiation determining means. That is, when the water temperature flowing into the water heat exchanger is lower than 60° C., the general cycle operation is performed. On the other hand, when the water temperature is equal to or higher than 60° C., the bypass operation is performed.

摘要翻译： 在热泵热水器中，控制单元具有散热判定装置，用于基于流入水热交换器的水温，确定空气热交换器中的制冷剂向外部空气的热辐射，并且所述控制单元选择性地 根据热辐射判定装置的确定结果执行一般循环操作和旁路操作。 也就是说，当流入水热交换器的水温低于60℃时，进行一般循环运转。 另一方面，当水温等于或高于60℃时，执行旁路操作。

公开(公告)号：US06494051B2

公开(公告)日：2002-12-17

申请号：US09969249

申请日：2001-10-01

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： F25B4104

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.

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：US06508073B2

公开(公告)日：2003-01-21

申请号：US09836991

申请日：2001-04-18

申请人： Shinya Noro ,  Hisayoshi Sakakibara ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

发明人： Shinya Noro ,  Hisayoshi Sakakibara ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

IPC分类号： F25B2700

CPC分类号： F28F1/022 ,  F24H4/04 ,  F25B9/008 ,  F25B30/02 ,  F25B43/02 ,  F25B2309/061 ,  F25B2339/047 ,  F28D7/0025

摘要： In a hot water supply system with a heat pump cycle, an oil separator for separating refrigerant and oil flowing from a compressor from each other is provided, and oil separated from refrigerant in the oil separator returns to the compressor through an oil returning passage after passing through an oil passage of a water heat exchanger. The water heat exchanger includes a first heat exchanging portion in which refrigerant from the oil separator and water from a tank are heat-exchanged, and a second heat exchanging portion in which oil from the oil separator and water from the tank are heat-exchanged. In the heat exchanger, a flow direction of water is set opposite to that of refrigerant and oil.

摘要翻译： 在具有热泵循环的热水供给系统中，设置有用于分离制冷剂的油分离器和从压缩机流出的油彼此分离的油分离器，从油分离器中的制冷剂分离的油通过回油通道返回到压缩机 通过水热交换器的油路。 水热交换器包括第一热交换部分，其中来自油分离器的制冷剂和来自罐的水被热交换;以及第二热交换部分，其中来自油分离器的油和来自罐的水被热交换。 在热交换器中，水的流动方向与制冷剂和油的流动方向相反。

公开(公告)号：US06627858B2

公开(公告)日：2003-09-30

申请号：US09996447

申请日：2001-11-28

申请人： Satoshi Nomura ,  Hisayoshi Sakakibara ,  Eiji Takahashi ,  Tomohisa Yoshimi ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

发明人： Satoshi Nomura ,  Hisayoshi Sakakibara ,  Eiji Takahashi ,  Tomohisa Yoshimi ,  Tomoaki Kobayakawa ,  Kazutoshi Kusakari ,  Michiyuki Saikawa

IPC分类号： H05B102

CPC分类号： F24D19/1051

摘要： In a control unit of a hot-water supply system, a boiling time period is estimated based on a hot-water amount stored in a tank at a time of 23:00, a boiling start time is adjusted so that boiling operation is finished at a time immediately before 7:00. For example, when the hot water amount stored in the tank is smaller at the time of 23:00, the boiling time period is made longer and the boiling start time is made earlier. On the other hand, when the hot water amount stored in the tank is larger at the time of 23:00, the boiling time period is made shorter and the boiling start time is made later.

公开(公告)号：US06477857B2

公开(公告)日：2002-11-12

申请号：US09805414

申请日：2001-03-13

申请人： Hirotsugu Takeuchi ,  Kazuhisa Makida ,  Yoshitaka Kume ,  Hiroshi Ishikawa ,  Kunio Iritani ,  Satoshi Nomura ,  Hisayoshi Sakakibara ,  Makoto Ikegami

发明人： Hirotsugu Takeuchi ,  Kazuhisa Makida ,  Yoshitaka Kume ,  Hiroshi Ishikawa ,  Kunio Iritani ,  Satoshi Nomura ,  Hisayoshi Sakakibara ,  Makoto Ikegami

IPC分类号： F25B106

CPC分类号： F25B41/00 ,  B60H2001/3298 ,  F25B9/008 ,  F25B29/003 ,  F25B40/00 ,  F25B2309/061 ,  F25B2339/047 ,  F25B2341/0011 ,  F25B2341/0012 ,  F25B2341/0013 ,  F25B2341/063 ,  F25B2400/23 ,  F25B2500/01 ,  F25B2500/18 ,  F25B2600/025 ,  F25B2600/0253 ,  F25B2600/17 ,  F25B2700/21174 ,  F25B2700/21175

摘要： In an ejector cycle system using carbon dioxide as refrigerant, an ejector decompresses and expands refrigerant from a radiator to suck gas refrigerant evaporated in an evaporator, and converts an expansion energy to a pressure energy to increase a refrigerant pressure to be sucked into a compressor. Because refrigerant is decompressed and expanded in a super-critical area, a pressure difference during the decompression operation becomes larger, and a specific enthalpy difference becomes larger. Accordingly, energy converting efficiency in the ejector becomes higher, and efficiency of the ejector cycle system is improved.

摘要翻译： 在使用二氧化碳作为制冷剂的喷射器循环系统中，喷射器将制冷剂从散热器减压并膨胀，以吸入在蒸发器中蒸发的制冷剂，并将膨胀能转化为压力能量，以增加要吸入压缩机的制冷剂压力。 由于制冷剂在超临界区域减压膨胀，所以减压运转时的压差变大，比焓差变大。 因此，喷射器中的能量转换效率变高，喷射器循环系统的效率提高。

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。