Refrigeration system having a variable speed compressor
    3.
    发明授权
    Refrigeration system having a variable speed compressor 有权
    具有变速压缩机的制冷系统

    公开(公告)号:US08011191B2

    公开(公告)日:2011-09-06

    申请号:US12570348

    申请日:2009-09-30

    IPC分类号: F25B7/00

    摘要: A two-stage cascade refrigeration system is provided having a first refrigeration stage and a second refrigeration stage. The first refrigeration stage defines a first fluid circuit for circulating a first refrigerant, and has a first compressor, a condenser, and a first expansion device that is in fluid communication with the first fluid circuit. The second refrigeration stage defines a second fluid circuit for circulating a second refrigerant, with the second refrigeration stage having a second compressor, a second expansion device, and an evaporator that is in fluid communication with the second fluid circuit. A heat exchanger is in fluid communication with the first and second fluid circuits to exchange heat between the first and second refrigerants. At least one of the first or second compressors is a variable speed compressor.

    摘要翻译: 提供了具有第一制冷级和第二制冷级的两级级联制冷系统。 第一制冷级限定用于循环第一制冷剂的第一流体回路,并且具有第一压缩机,冷凝器和与第一流体回路流体连通的第一膨胀装置。 第二制冷级限定用于使第二制冷剂循环的第二流体回路,其中第二制冷级具有与第二流体回路流体连通的第二压缩机,第二膨胀装置和蒸发器。 热交换器与第一和第二流体回路流体连通,以在第一和第二制冷剂之间交换热量。 第一或第二压缩机中的至少一个是变速压缩机。

    Toothbrush head
    5.
    外观设计

    公开(公告)号:USD1031272S1

    公开(公告)日:2024-06-18

    申请号:US29921866

    申请日:2023-12-19

    申请人: Qi Wang

    设计人: Qi Wang

    摘要: FIG. 1 is a front, right and top perspective view of a toothbrush head, showing my design.
    FIG. 2 is a rear, left and bottom perspective view thereof.
    FIG. 3 is a front elevation view thereof.
    FIG. 4 is a rear elevation view thereof.
    FIG. 5 is a left side elevation view thereof.
    FIG. 6 is a right side elevation view thereof.
    FIG. 7 is a top plan view thereof; and,
    FIG. 8 is a bottom plan view thereof.
    The broken lines depict portions of the toothbrush head that form no part of the claimed design.

    Toy set
    6.
    外观设计
    Toy set 有权

    公开(公告)号:USD969227S1

    公开(公告)日:2022-11-08

    申请号:US29787372

    申请日:2021-06-06

    申请人: Qi Wang

    设计人: Qi Wang

    Preparation of purified collagen solution from porcine skin

    公开(公告)号:US11008379B1

    公开(公告)日:2021-05-18

    申请号:US16356094

    申请日:2019-03-18

    申请人: Qi Wang Dae Kyu Chang

    发明人: Qi Wang Dae Kyu Chang

    摘要: A method of preparing a purified collagen solution from porcine skin may include receiving and inspecting the porcine skin; treating the porcine skin with a sodium hydroxide treatment, resulting in a sodium hydroxide processed skin; treating the sodium hydroxide processed skin with an ethanol treatment, resulting in ethanol treated processed skin; producing liquid collagen from the ethanol treated processed skin; clarifying the liquid collagen; and concentrating the clarified liquid collagen.

    Water bottle
    9.
    外观设计

    公开(公告)号:USD879555S1

    公开(公告)日:2020-03-31

    申请号:US29668322

    申请日:2018-10-30

    申请人: Qi Wang

    设计人: Qi Wang