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公开(公告)号：US20150345841A1
公开(公告)日：2015-12-03
申请号：US14655746
申请日：2013-12-23
Applicant: DENSO CORPORATION
Inventor： Yoshiyuki YOKOYAMA , Haruyuki NISHIJIMA , Etsuhisa YAMADA
CPC classification number: F25B41/00 , B60H2001/3298 , F04F5/46 , F25B5/02 , F25B40/02 , F25B41/062 , F25B2341/0012 , F25B2400/23 , F25B2500/18
Abstract: An ejector includes a body having a nozzle passage that depressurizes a refrigerant flowing out of a swirling space in which the refrigerant is swirled, a suction passage that draws a refrigerant from an external, and a diffuser passage that mixes an ejection refrigerant jetted from the nozzle passage and a suction refrigerant drawn from the suction passage together and pressurizes the mixed refrigerant. The body also has a gas-liquid separation space that separates the refrigerant flowing out of the diffuser passage into gas and liquid by an action of a centrifugal force, and multiple liquid-phase refrigerant outflow passages through which the liquid-phase refrigerant separated by the gas-liquid separation space flows out to the multiple evaporators.
Abstract translation: 喷射器包括具有喷嘴通道的主体，该喷嘴通道使从制冷剂旋转的旋转空间流出的制冷剂减压，从外部吸入制冷剂的吸入通道和将从喷嘴喷射的喷射制冷剂混合的扩散通路 通道和从吸入通道抽吸的吸入制冷剂一起对混合制冷剂加压。 主体还具有气液分离空间，其通过离心力的作用将从扩散器通道流出的制冷剂分离成气体和液体;以及多个液相制冷剂流出通道，液相制冷剂由 气液分离空间流出到多个蒸发器。
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公开(公告)号：US20200094781A1
公开(公告)日：2020-03-26
申请号：US16692889
申请日：2019-11-22
Applicant: DENSO CORPORATION
Inventor： Koji OTA , Yoshiyuki YOKOYAMA , Shinichiro NAKAMURA , Kotaro FUKUDA
Abstract: An electromagnetic wave utilizing system includes an electromagnetic wave apparatus configured to perform transmitting and/or receiving of an electromagnetic wave, and a heater that heats a passage member. The heater includes a heating element and a holder. The heating element and the holder are transparent to allow the electromagnetic wave to transmit therethrough. The electromagnetic wave apparatus transmits and/or receives the electromagnetic wave while rotating on a horizontal plane. The heater is configured to rotate together with the electromagnetic wave apparatus or to surround the electromagnetic wave apparatus 360 degrees in a horizontal direction.
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公开(公告)号：US20180023847A1
公开(公告)日：2018-01-25
申请号：US15551047
申请日：2016-03-04
Applicant: DENSO CORPORATION
Inventor： Youhei NAGANO , Haruyuki NISHIJIMA , Yoshiyuki YOKOYAMA
CPC classification number: F25B1/06 , F04B39/04 , F04B41/06 , F25B41/00 , F25B41/062 , F25B43/02 , F25B2341/0011 , F25B2341/0012 , F25B2400/23 , F25B2500/18
Abstract: An ejector refrigeration cycle has a compressor, a radiator, an ejector, a swirl flow generator, an evaporator, and an oil separator. The compressor compresses refrigerant, mixed with refrigerant oil compatible with a liquid-phase refrigerant, and discharges the high-pressure refrigerant. The ejector has a nozzle and a body having a refrigerant suction port and a pressure increasing part. The swirl flow generator is configured to cause a decompression boiling in the refrigerant by causing the refrigerant to swirl about a center axis of the nozzle. The oil separator separates the refrigerant oil from the high-pressure refrigerant compressed by the compressor and guides the refrigerant oil to flow to a suction side of the compressor. The oil separator decreases a concentration of the refrigerant oil in the refrigerant, which is to flow into the swirl flow generator, so as to promote the decompression boiling of the refrigerant in the swirl flow generator.
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公开(公告)号：US20170299227A1
公开(公告)日：2017-10-19
申请号：US15513508
申请日：2015-08-18
Applicant: DENSO CORPORATION
Inventor： Makoto KUME , Masahiro YAMADA , Toshiyuki TASHIRO , Yoshinori ARAKI , Haruyuki NISHIJIMA , Youhei NAGANO , Yoshiyuki YOKOYAMA
CPC classification number: F25B1/06 , F25B6/04 , F25B41/00 , F25B49/02 , F25B2341/0012 , F25B2341/0014 , F25B2700/1931 , F25B2700/2104 , F25B2700/2106 , F25B2700/2117
Abstract: An ejector-type refrigeration cycle has a compressor, an ejector module, a discharge capacity control section, and a pressure difference determining section. The ejector module has a body providing a gas-liquid separating space. The pressure difference determining section determines whether a low pressure difference operating condition is met. The low pressure difference operating condition is an operating condition in which a pressure difference obtained by subtracting a low-pressure side refrigerant pressure from a high-pressure side refrigerant pressure a predetermined reference pressure difference or lower. The body is provided with an oil return passage that guides a part of a liquid-phase refrigerant to flow from the gas-liquid separating space to a suction side of the compressor. The discharge capacity control section sets a refrigerant discharge capacity to be a predetermined reference discharge capacity or higher when the low pressure difference operating condition is determined to be met.
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公开(公告)号：US20170232821A1
公开(公告)日：2017-08-17
申请号：US15502606
申请日：2015-08-07
Applicant: DENSO CORPORATION
Inventor： Hiroshi KATAOKA , Shun KURATA , Isamu TAKASUGI , Haruyuki NISHIJIMA , Youhei NAGANO , Yoshiyuki YOKOYAMA
IPC: B60H1/32
CPC classification number: B60H1/3204 , B60H2001/3291 , B60H2001/3297 , B60H2001/3298 , F04B41/06 , F04F5/46 , F25B6/04 , F25B41/00 , F25B2341/0012
Abstract: An ejector-type refrigeration cycle includes an ejector module integrated with a gas-liquid separation device. A length of an inlet pipe that connects a liquid-phase refrigerant outflow port of an ejector module to a refrigerant inflow port of an evaporator is shorter than a length of a suction pipe that connects a gas-phase refrigerant outflow port of the ejector module to a suction port of the compressor.
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Patent Agency Ranking
公开(公告)号：US20170225543A1
公开(公告)日：2017-08-10
申请号：US15502579
申请日：2015-08-07
Applicant: DENSO CORPORATION
Inventor： Shun KURATA , Yoshiyuki YOKOYAMA , Youhei NAGANO , Haruyuki NISHIJIMA , Isamu TAKASUGI , Hiroshi KATAOKA
IPC: B60H1/32
CPC classification number: B60H1/3204 , B60H1/3211 , B60H1/323 , B60H2001/325 , B60H2001/3285 , B60H2001/3297 , B60H2001/3298 , F25B6/04 , F25B41/00 , F25B2341/0012
Abstract: An ejector-type refrigeration cycle includes an ejector module integrated with a gas-liquid separation device. A length of a suction pipe that connects a gas-phase refrigerant outflow port of the ejector module to a suction port of a compressor is set to be shorter than a length of an outlet pipe that connects a refrigerant outflow port of an evaporator to a refrigerant suction port of the ejector module. A pressure loss that occurs when a refrigerant flows in the suction pipe may be set to be lower than a pressure loss that occurs when the refrigerant flows in an outlet pipe.
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公开(公告)号：US20160200175A1
公开(公告)日：2016-07-14
申请号：US14914565
申请日：2014-08-06
Applicant: DENSO CORPORATION
Inventor： Daisuke NAKAJIMA , Yoshiaki TAKANO , Haruyuki NISHIJIMA , Yoshiyuki YOKOYAMA
CPC classification number: B60H1/323 , B60H1/00021 , B60H2001/002 , B60H2001/3298 , F25B5/02 , F25B40/00 , F25B40/02 , F25B41/00 , F25B41/062 , F25B2341/0012 , F25B2341/0015
Abstract: An ejector refrigeration cycle includes an upstream-side branch portion for branching a flow of a refrigerant flowing out a radiator, an upstream-side ejector having an upstream-side nozzle for decompressing one of the refrigerants branched by the upstream-side branch portion, and a gas-liquid separator for separating the refrigerant flowing out the upstream-side ejector into gas and liquid phase refrigerants. The liquid-phase refrigerant flowing out of the gas-liquid separator is decompressed by a low-pressure side fixed throttle and allowed to evaporate at a first evaporator. The other refrigerant branched by the upstream-side branch portion is decompressed by a high-pressure side fixed throttle and allowed to evaporate at a second evaporator. A merging portion merges the refrigerant flowing out of the first evaporator with the refrigerant flowing out of the second evaporator, so that the merged refrigerant is sucked from an upstream-side refrigerant suction port of the upstream-side ejector.
Abstract translation: 喷射器制冷循环包括用于分流从散热器流出的制冷剂流的上游侧分支部分，具有用于减压由上游侧分支部分分支的一种制冷剂的上游侧喷嘴的上游侧喷射器，以及 用于将从上游侧喷射器流出的制冷剂分离成气液相制冷剂的气液分离器。 从气液分离器流出的液相制冷剂由低压侧固定节气门减压，并在第一蒸发器下蒸发。 由上游侧分支部分分支的其他制冷剂由高压侧固定节气门减压，并在第二蒸发器下蒸发。 合流部将从第一蒸发器流出的制冷剂与从第二蒸发器流出的制冷剂合流，从而从上游侧喷射器的上游侧制冷剂吸入口吸入合流制冷剂。
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公开(公告)号：US20190041101A1
公开(公告)日：2019-02-07
申请号：US16073889
申请日：2017-01-24
Applicant: DENSO CORPORATION
Inventor： Haruyuki NISHIJIMA , Yoshiaki TAKANO , Yoshiyuki YOKOYAMA , Hiroshi OSHITANI , Yohei NAGANO , Ryota NAKASHIMA
Abstract: An ejector includes a body including an inflow space into which a refrigerant flows, a passage formation member disposed inside the body and having a conical shape, and a nozzle passage having an annular cross section functioning as a nozzle and a diffuser passage having an annular cross section functioning as a pressurizing portion between an inner wall surface of the body and a conical lateral surface of the passage formation member. A drive mechanism that displaces the passage formation member along a center axis is coupled to an upstream actuating bar which extends from the passage formation member toward the inflow space and is slidably supported by the body. A largest outer diameter portion of an annular member forming a wall surface of the nozzle passage provides a throat portion functioning as an edge for enlarging a passage cross-sectional area to cause a separation vortex in the refrigerant.
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公开(公告)号：US20180080482A1
公开(公告)日：2018-03-22
申请号：US15554249
申请日：2016-02-26
Applicant: DENSO CORPORATION
Inventor： Yoshiyuki YOKOYAMA , Haruyuki NISHIJIMA , Yoshiaki TAKANO
CPC classification number: F04F5/461 , F04F5/18 , F04F5/44 , F04F5/46 , F04F5/50 , F25B1/00 , F25B41/00 , F25B41/06 , F25B2341/0012 , F25B2400/23 , F25B2500/18
Abstract: An ejector includes a nozzle, a body including a refrigerant suction port and a pressure increasing portion, a passage forming member inserted into the nozzle, and an actuation device moving the passage forming member. A nozzle passage includes a smallest passage cross-sectional area portion, a convergent portion, and a divergent portion. The passage forming member includes a tip portion which changes the passage cross-sectional area at the smallest passage cross-sectional area portion when the actuation device moves the passage forming member. A positive displacement amount is defined as an amount of a displacement of the passage forming member when the passage forming member is moved so as to increase the passage cross-sectional area at the smallest passage cross-sectional area portion. The tip portion has a shape in which an increase rate of the smallest passage cross-sectional area portion is increased according to an increase of the positive displacement amount.
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公开(公告)号：US20170307259A1
公开(公告)日：2017-10-26
申请号：US15513469
申请日：2015-08-18
Applicant: DENSO CORPORATION
Inventor： Yoshinori ARAKI , Toshiyuki TASHIRO , Masahiro YAMADA , Makoto KUME , Haruyuki NISHIJIMA , Youhei NAGANO , Yoshiyuki YOKOYAMA
CPC classification number: F25B1/06 , F25B5/02 , F25B6/04 , F25B39/00 , F25B39/02 , F25B41/00 , F25B41/04 , F25B2341/001 , F25B2341/0011 , F25B2341/0012 , F25B2341/0014 , F25B2600/2515 , F25B2700/2104 , F25B2700/2106 , F25B2700/2117
Abstract: When intended to increase a refrigerant discharge capacity of a compressor in an ejector refrigeration cycle device at start-up of the compressor, the refrigerant discharge capacity is increased in such a manner that an increase amount in the refrigerant discharge capacity of the compressor per predetermined time period is lower than a maximum capacity increase amount per predetermined time period enabled by the compressor. Thus, even if a gas-liquid two-phase refrigerant flows into a refrigerant inflow passage forming a swirling-flow generating portion, the flow velocity of the gas-liquid two-phase refrigerant is prevented from becoming high, so that it can reduce friction noise that would be caused when the gas-liquid two-phase refrigerant circulates through the refrigerant inflow passage, further suppressing the generation of noise from the ejector.
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