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1. 发明申请

US20190041101A1 EJECTOR 审中-公开
公开(公告)号：US20190041101A1
公开(公告)日：2019-02-07
申请号：US16073889
申请日：2017-01-24
申请人： DENSO CORPORATION
发明人： Haruyuki NISHIJIMA , Yoshiaki TAKANO , Yoshiyuki YOKOYAMA , Hiroshi OSHITANI , Yohei NAGANO , Ryota NAKASHIMA
IPC分类号： F25B1/08 , F04F5/04 , F04F5/46 , F04F5/50
摘要： 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.

2. 发明申请

US20180045225A1 EJECTOR, MANUFACTURING METHOD THEREOF, AND EJECTOR-TYPE REFRIGERATION CYCLE 审中-公开
公开(公告)号：US20180045225A1
公开(公告)日：2018-02-15
申请号：US15556486
申请日：2016-03-02
申请人： DENSO CORPORATION
发明人： Yoshiyuki YOKOYAMA , Haruyuki NISHIJIMA , Etsuhisa YAMADA , Ryota NAKASHIMA , Yoshiaki TAKANO , Kazunori MIZUTORI , Yorito KOHARA , Hiroshi SHINTANI
IPC分类号： F04F5/46 , F25B41/00 , F04F5/04
CPC分类号： F04F5/463 , F04F5/04 , F04F5/46 , F25B41/00 , F25B2341/001 , F25B2341/0012
摘要： An ejector has a nozzle, a body, a passage defining member and a drive portion. The body has a refrigerant suction port and a pressure increasing portion. A nozzle passage is defined between an inner surface of the nozzle and an outer surface of the passage defining member and has a minimum sectional area portion, a tapered portion, and an expansion portion. The minimum sectional area portion has a smallest passage sectional area. The tapered portion is located upstream of the minimum sectional area portion in a refrigerant flow direction and has a passage sectional area decreasing toward the minimum sectional area portion gradually. The expansion portion is located downstream of the minimum sectional area portion in the refrigerant flow direction and has a passage sectional area increasing gradually. The passage defining member has a groove that is recessed to increase the passage sectional area of the nozzle passage.

3. 发明申请

US20160186782A1 EJECTOR 审中-公开
公开(公告)号：US20160186782A1
公开(公告)日：2016-06-30
申请号：US14908598
申请日：2014-07-25
申请人： DENSO CORPORATION
发明人： Ryota NAKASHIMA , Etsuhisa YAMADA , Haruyuki NISHIJIMA , Yoshiaki TAKANO
IPC分类号： F04F5/04
CPC分类号： F04F5/04 , F04F5/10 , F04F5/44 , F04F5/46 , F04F5/48 , F25B1/00 , F25B40/02 , F25B2341/001
摘要： In an ejector, a substantially conical passage formation member is disposed in the interior of a body forming a space therein to define a nozzle passage functioning as a nozzle, a mixing passage in which an ejection refrigerant ejected from the nozzle passage and a suction refrigerant drawn from a suction passage are mixed together, and a diffuser passage that converts a kinetic energy of the refrigerant that has flowed out of the mixing passage into a pressure energy, between an inner peripheral surface of the body and the passage formation member. The passage formation member is configured so that a spread angle of a portion forming an outlet side of the nozzle passage is smaller than a spread angle of a portion forming an inlet side of the nozzle passage in a cross-section parallel to an axial direction of the passage formation member.
摘要翻译：在喷射器中，基本上圆锥形的通道形成构件设置在主体的内部，在其中形成空间，以限定用作喷嘴的喷嘴通道，混合通道，喷嘴制冷剂从喷嘴通道喷出，吸入制冷剂被抽出从吸入通道混合在一起的扩散器通道，其将从混合通道流出的制冷剂的动能转换成主体的内周表面和通道形成构件之间的压力能量。通道形成构件被构造成使得形成喷嘴通道的出口侧的部分的扩展角小于形成喷嘴通道的入口侧的部分在与轴向方向平行的横截面中的展开角度通道形成构件。

4. 发明申请

US20190032677A1 EJECTOR 审中-公开
公开(公告)号：US20190032677A1
公开(公告)日：2019-01-31
申请号：US16073824
申请日：2017-01-24
申请人： DENSO CORPORATION
发明人： Haruyuki NISHIJIMA , Yoshiaki TAKANO , Yoshiyuki YOKOYAMA , Hiroshi OSHITANI , Yohei NAGANO , Ryota NAKASHIMA
IPC分类号： F04F5/04 , F04F5/46 , B60H1/32
摘要： 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 which functions as a nozzle and a diffuser passage having an annular cross section which functions as a pressure increase portion, the nozzle passage and the diffuser passage being disposed 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 in a direction 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. Center axes of the passage formation member, the upstream actuating bar and the inflow space are coaxial with each other.

5. 发明申请

US20160169566A1 EJECTOR 有权
公开(公告)号：US20160169566A1
公开(公告)日：2016-06-16
申请号：US14910281
申请日：2014-07-24
申请人： DENSO CORPORATION
发明人： Ryota NAKASHIMA , Etsuhisa YAMADA , Haruyuki NISHIJIMA , Yoshiaki TAKANO
IPC分类号： F25B41/00 , F25B9/08
CPC分类号： F25B41/00 , B60H2001/3298 , F04F5/04 , F04F5/54 , F25B9/08 , F25B40/02 , F25B2341/0012
摘要： An approximately conical passage-forming member is disposed inside a body in which a swirling space for swirling a refrigerant is formed, and an ejector defines therein a nozzle passage that functions as a nozzle for depressurizing a refrigerant that has flowed out from the swirling space between an inner circumferential surface of the body and the passage-forming member, and a diffuser passage that pressurizes a mixed refrigerant obtained from a refrigerant sprayed from the nozzle passage and a refrigerant drawn from a suction-passage. A plurality of driving passages through which a refrigerant is introduced from a distribution space to the swirling space are formed in the body. In this case, the driving passages are formed in a manner such that a refrigerant flowing in from each driving passage into the swirling space flows along an outer circumference of the swirling space and flows in directions different from each other. Accordingly, nozzle efficiency is sufficiently improved.
摘要翻译：大致圆锥形的通道形成构件设置在其中形成用于旋转制冷剂的旋转空间的主体内，并且喷射器限定了喷嘴通道，该喷嘴通道用作用于对从涡旋空间流出的制冷剂进行减压主体的内周表面和通道形成构件，以及对从喷嘴通道喷射的制冷剂和从吸入通道抽出的制冷剂获得的混合制冷剂加压的扩散通路。在主体中形成有从分配空间向旋转空间引入制冷剂的多个驱动通路。在这种情况下，驱动通道形成为使得从每个驱动通道流入涡旋空间的制冷剂沿着旋转空间的外周流动并沿彼此不同的方向流动。因此，喷嘴效率充分提高。

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