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空调常识

长沙冰箱漏氟换铜管的公式

发布时间:2013-05-05

很多冰箱采用的是铝管、留轧钢管、铝板压合的蒸发器,一旦腐烂严重或根本就无法找到漏点,就无法修复,只有更换,由于市面上所出售的很难找到既符合尺寸又符合表冷面积的蒸发器,那就需要自制,在自制的过程中一般选择铜管,它既便于焊接又方便制作,为了既能满足卸冷的要求又要节省材料那就需要一个计算,下面我介绍一种计算方法:
铜管的直径和卸冷能力:(零下15度试验满足要求)
直径(毫米)     卸冷能力(瓦/米)
  6                              14.2
  8                              19.3
10                              24
12                              32
压缩机功率并不代表他的制冷能力,而真正的制冷能力对三星级冰箱来说,一般压缩机的制冷功率是压缩机电功率的2.2~2.4倍,那么计算公式也就是压缩机功率的2倍左右除以选择铜管直径的单位卸冷能力(瓦/米),即可得到需要的铜管长度。下面我举例说明:
一台扬子冰箱210立升,蒸发器采用的是留轧钢管,长时间没用内部蒸发器腐蚀泄漏。
    压缩机功率125瓦,压缩机的制冷功率估算约是280瓦(125瓦*2.2=275瓦),首先选择铜管的直径,根据箱体的形式选择直径8毫米的铜管,根据卸冷能力计算,需要铜管长度14.5米(280除以19.3等于14.507米),保鲜室管路的长度为管路总长度的0.3倍(冷冻室80立升,冷藏室130立升),因此冷冻室需要11米的铜管,制作时根据箱内的尺寸采用蛇形排列的方法制作排列,采用固定卡的方式固定好铜管,使铜管压在冰箱内胆上以确保卸冷的面积,在下端后壳的连接管盖板内断开原来的连接,把刚制作的上下蒸发器连接好,并与毛细管的输出端和压缩机的吸气端焊接好后,打压检漏没有问题,然后更换干燥过滤器,采用二次充氟方法,试机一切正常。
128彩票一台青岛德贝冰柜300立升,压缩机是185瓦的,蒸发器泄漏,选择直径8毫米的铜管,经过计算得到需要23米,考虑制作问题,所以采用6毫米直径的双管并排,这样制作简单,卸冷均匀,根据计算30米,那么可以算每一根需要15米,双管并排间距为4厘米,盘旋围绕冰柜内胆上由上到下螺旋形状,下部连接压缩机的吸气口,上部与毛细管连接,制作固定完毕后打压检漏、抽真空、加氟试机一切正常。

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这个一般漏氟用的到。 长沙志高空调维修


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