公开(公告)号：US06438993B2

公开(公告)日：2002-08-27

申请号：US09872379

申请日：2001-06-01

Applicant: Hirotsugu Takeuchi ,  Yoshitaka Kume ,  Hiroshi Oshitani ,  Gota Ogata

Inventor： Hirotsugu Takeuchi ,  Yoshitaka Kume ,  Hiroshi Oshitani ,  Gota Ogata

IPC: F25B106

CPC classification number: F25B41/00 ,  B60H2001/3298 ,  F04F5/04 ,  F04F5/466 ,  F25B9/008 ,  F25B2309/06 ,  F25B2341/0012 ,  F25B2341/0013 ,  F25B2500/01 ,  F25B2500/18

Abstract: In an ejector cycle system, a mixing portion of an ejector has a length in a refrigerant flow direction and an equivalent diameter, and a ratio of the length to the equivalent diameter of the mixing portion is equal to or smaller than 120. Further, a ratio of the equivalent diameter of the mixing portion to an equivalent diameter at an outlet of a nozzle of the ejector is in a range of 1.05-10. Accordingly, the ejector cycle system operates while a high ejector efficiency is maintained.

公开(公告)号：US06477857B2

公开(公告)日：2002-11-12

申请号：US09805414

申请日：2001-03-13

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

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

IPC: F25B106

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。