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    • 3. 发明公开
    • 이중파이프 및 그의 제조방법과, 이중파이프가 제공된냉동사이클장치
    • 双壁管,其制造方法和提供该方法的制冷剂循环装置
    • KR1020080025708A
    • 2008-03-21
    • KR1020080010799
    • 2008-02-01
    • 가부시키가이샤 덴소가부시키가이샤 덴소 에어 시스템즈
    • 나카무라후미아키다카노요시아키구라타순스즈키다카히사오노다카시나가나와히로키오치아이긴지오하라히로키
    • F28D7/10F28F1/00F28F1/08F25B1/00
    • B23P17/02F16L7/00F16L9/18F25B40/00F28D7/106F28F1/06F28F1/42F28F1/426F28F2210/06Y10T29/49361Y10T29/49428Y10T29/49826
    • A double-wall pipe, a method of manufacturing the same, and a refrigerant cycle device provided with the same are provided to fixedly hold an inner pipe and an outer pipe with a simple structure by having a passage therebetween defined by a helical groove portion. A double-wall pipe used in a refrigeration cycle device comprising a compressor, a high pressure heat exchanger, a pressure reducing unit, and a low pressure heat exchanger, the double-wall pipe comprises an outer pipe(161), and an inner pipe(162) disposed inside the outer pipe, having a projected portion(162b) that defines a helical groove portion(162a) extending in a longitudinal direction and encircling its surroundings. The helical groove portion comprises a plurality of helical grooves, each of which helically extends in a longitudinal direction. The helical groove portion of the inner pipe has a groove depth which is in a range of 5% to 15% of an outer diameter of an imaginary cylinder formed by an outer surface of the projected portion of the inner pipe. The outer pipe and inner pipe are bent to have a straight portion extending in a straight line between bending portions, and a plurality of bending portions(163b) bent from the straight portion. A proportion of an outer diameter of the inner pipe with respect to an inner diameter of the outer pipe is in a range of 0.7 to 0.95. The projected portion of the inner pipe makes contact with the inner surface of the outer pipe to be pressed and held in a radial direction by the outer pipe in the bending portion. High pressure refrigerant flow between the outer pipe and the inner pipe, and low pressure refrigerant flow in the inner pipe.
    • 提供一种双壁管及其制造方法以及具有该制冷剂循环装置的制冷剂循环装置,通过在其间限定有螺旋槽部的通路来固定地保持具有简单结构的内管和外管。 一种用于包括压缩机,高压热交换器,减压单元和低压热交换器的制冷循环装置的双壁管,所述双壁管包括外管(161)和内管 (162),其具有限定沿纵向延伸并围绕其周围的螺旋槽部分(162a)的突出部分(162b)。 螺旋槽部分包括多个螺旋槽,每个螺旋槽在纵向方向上螺旋形延伸。 内管的螺旋槽部分的槽深度在由内管的突出部分的外表面形成的假想气缸的外径的5%至15%的范围内。 外管和内管弯曲成具有在弯曲部之间以直线延伸的直线部分和从直线部分弯曲的多个弯曲部分(163b)。 内管的外径相对于外管的内径的比例在0.7〜0.95的范围内。 内管的突出部与外管的内表面接触,通过外管在弯曲部中沿径向保持。 外管和内管之间的高压制冷剂流动,内管中的低压制冷剂流动。
    • 5. 发明公开
    • 이중파이프 및 그의 제조방법과, 이중파이프가 제공된냉동사이클장치
    • 双壁管,其制造方法和提供该方法的制冷剂循环装置
    • KR1020080025707A
    • 2008-03-21
    • KR1020080010762
    • 2008-02-01
    • 가부시키가이샤 덴소가부시키가이샤 덴소 에어 시스템즈
    • 나카무라후미아키다카노요시아키구라타순스즈키다카히사오노다카시나가나와히로키오치아이긴지오하라히로키
    • F28D7/10F28F1/00F28F1/08
    • B23P17/02F16L7/00F16L9/18F25B40/00F28D7/106F28F1/06F28F1/42F28F1/426F28F2210/06Y10T29/49361Y10T29/49428Y10T29/49826
    • A double-wall pipe, a method of manufacturing the same, and a refrigerant cycle device provided with the same are provided to protect outer and inner pipes from resonation and prevent noise and breakage of the double-wall pipe, by forming a helical groove portion which defines a passage in a bending portion between the outer pipe and inner pipe, each of which part is fixedly secured in the bending portion with a simple structure. A double-wall pipe used in a refrigeration cycle device comprising a compressor, a high pressure heat exchanger, a pressure reducing unit, and a low pressure heat exchanger, the double-wall pipe comprises an outer pipe(161), and an inner pipe(162). The inner pipe is disposed inside of the outer pipe having a projected portion(162b) to form a helical groove portion(162a) having a plurality of helical grooves that are extending in a longitudinal direction. The outer and inner pipes are bending to have a straight portion extending in a straight line, and a bending portion(163b) bending from the straight line. The outer pipe has an inner diameter larger than an outer diameter of an imaginary cylinder which is formed by an outer surface of the projected portion of the inner pipe in the straight portion, and has an outer diameter that is in a range of 1.1 to 1.3 times of the outer diameter of the inner pipe. The projected portion of the inner pipe is pressed and held by the outer pipe in the bending portion, by making contact with the inner side of the outer pipe. High pressure refrigerant flow between the outer pipe and inner pipe, and low pressure refrigerant flow in the inner pipe.
    • 提供一种双壁管及其制造方法以及具有该制冷剂循环装置的制冷剂循环装置,以通过形成螺旋槽部分来保护外管和内管免受共振,并防止双壁管的噪音和破损 其限定了外管和内管之间的弯曲部分中的通道,每个部分以简单的结构固定在弯曲部分中。 一种用于包括压缩机,高压热交换器,减压单元和低压热交换器的制冷循环装置的双壁管,所述双壁管包括外管(161)和内管 (162)。 内管设置在具有突出部分(162b)的外管的内侧,以形成具有沿纵向方向延伸的多个螺旋槽的螺旋槽部分(162a)。 外管和内管弯曲成具有直线延伸的直线部分和从直线弯曲的弯曲部分(163b)。 外管的内径大于由直管部分的内管的突出部的外表面形成的假想气缸的外径,外径为1.1〜1.3的外径 内管外径的倍数。 内管的突出部分通过与外管的内侧接触而被弯曲部分中的外管按压并保持。 外管和内管之间的高压制冷剂流动,内管中的低压制冷剂流动。