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    COOLING BOX
    1.
    发明授权
    COOLING BOX 失效
    冷却箱

    公开(公告)号：EP0754283B1

    公开(公告)日：2003-12-17

    申请号：EP95916507.7

    申请日：1995-04-21

    Applicant: EMERALD ENTERPRISES PTY. LTD.

    Inventor： COVENTRY, Andrew

    IPC: F25D3/10 ,  F25D3/08 ,  F25D3/14

    CPC classification number: F25D3/005

    Abstract: A refrigeration system (12) comprising three expansion units (19A, 19B, 19C) connectable in parallel via respective conduits (30) to a supply (16) of compressed refrigerant. Each expansion unit comprises an expansion chamber (22) and three series connected secondary chambers (24, 26 and 28). The expansion chamber (22) and secondary chambers (24, 26 and 28) are formed with progressively reducing volumetric capacity. The end of each of the third secondary chambers (28), distant from their respective second secondary chambers (26) is connected to a common bleed tube (29) having a bleed hole (34) for venting the refrigerant. The bleed hole (34) opens on the outside of a housing (15) which houses the expansion units (19A, 19B, 19C). The interior of the housing (15) is filled with a gel which changes state from a liquid to a solid at a predetermined temperature. A valving arrangement (32) connects the expansion units (19A, 19B and 19C) to a supply of compressed refrigerant. The housing (15) together with a connected supply (16) refrigerant can be installed into a cooling box for cooling the space within, and thus any contents of, the cooling box. This is achieved by the valve mechanism (32) periodically admitting a volume of compressed refrigerant into the expansion units (19A, 19B and 19C). Upon such admittance, the compressed refrigerant initially expands in the expansion chambers (22). This is accompanied by an absorption of heat from the surrounding gel which in turn absorbs heat from the space within the colling box. The flow of expanded refrigerant through the secondary chambers is retarded by back pressure produced by having the secondary chambers of progressively reducing volumetric capacity. This allows the gel to be maintained at a frozen state for a long period of time while consuming only small volumes of compressed refrigerant.

    Abstract translation: 包括三个膨胀单元（19A，19B，19C）的制冷系统（12）可通过相应的管道（30）并联连接到压缩制冷剂的供应（16）。 每个膨胀单元包括膨胀室（22）和三个串联的次级室（24,26和28）。 膨胀室（22）和二级室（24,26和28）形成有逐渐减小的体积容量。 远离它们各自的第二次级室（26）的每个第三次级室（28）的末端连接到具有用于排放制冷剂的排放孔（34）的公共排放管（29）。 泄放孔（34）在容纳膨胀单元（19A，19B，19C）的壳体（15）的外侧上敞开。 壳体（15）的内部填充有凝胶，该凝胶在预定温度下从液态变为固态。 阀门装置（32）将膨胀单元（19A，19B和19C）连接到压缩制冷剂供应源。 壳体（15）与连接的供应（16）制冷剂一起可以安装到冷却箱中，用于冷却冷却箱内的空间以及冷却箱的任何内容物。 这是通过阀机构（32）周期性地使一定量的压缩制冷剂进入膨胀单元（19A，19B和19C）来实现的。 在这种导纳时，压缩的制冷剂最初在膨胀室（22）中膨胀。 这伴随着从周围凝胶吸收热量，而凝胶又从冷却箱内的空间吸收热量。 通过使次级室逐渐减小容积容量而产生的背压来延迟通过次级室的膨胀制冷剂的流动。 这使得凝胶能够长时间保持冷冻状态，同时仅消耗少量的压缩制冷剂。

    REFRIGERATION SYSTEM
    3.
    发明公开
    REFRIGERATION SYSTEM 失效
    冷却系统

    公开(公告)号：EP0754283A1

    公开(公告)日：1997-01-22

    申请号：EP95916507.0

    申请日：1995-04-21

    Applicant: EMERALD ENTERPRISES PTY. LTD.

    Inventor： COVENTRY, Andrew

    IPC: F25D3

    CPC classification number: F25D3/005

    Abstract: A refrigeration system (12) comprising three expansion units (19A, 19B, 19C) connectable in parallel via respective conduits (30) to a supply (16) of compressed refrigerant. Each expansion unit comprises an expansion chamber (22) and three series connected secondary chambers (24, 26 and 28). The expansion chamber (22) and secondary chambers (24, 26 and 28) are formed with progressively reducing volumetric capacity. The end of each of the third secondary chambers (28), distant from their respective second secondary chambers (26) is connected to a common bleed tube (29) having a bleed hole (34) for venting the refrigerant. The bleed hole (34) opens on the outside of a housing (15) which houses the expansion units (19A, 19B, 19C). The interior of the housing (15) is filled with a gel which changes state from a liquid to a solid at a predetermined temperature. A valving arrangement (32) connects the expansion units (19A, 19B and 19C) to a supply of compressed refrigerant. The housing (15) together with a connected supply (16) refrigerant can be installed into a cooling box for cooling the space within, and thus any contents of, the cooling box. This is achieved by the valve mechanism (32) periodically admitting a volume of compressed refrigerant into the expansion units (19A, 19B and 19C). Upon such admittance, the compressed refrigerant initially expands in the expansion chambers (22). This is accompanied by an absorption of heat from the surrounding gel which in turn absorbs heat from the space within the colling box. The flow of expanded refrigerant through the secondary chambers is retarded by back pressure produced by having the secondary chambers of progressively reducing volumetric capacity. This allows the gel to be maintained at a frozen state for a long period of time while consuming only small volumes of compressed refrigerant.

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