计算冰箱冷柜毛细管的公式（Formula for calculating capillary of refrigerator and freezer）.docVIP

计算冰箱冷柜毛细管的公式（Formula for calculating capillary of refrigerator and freezer） Formula for calculating capillary of refrigerator and freezer 1. test method for capillary length The process of open tube, high pressure pipe is connected with a pressure meter is connected with one end of the capillary, dry filter, the other end is not welded, start the compressor, if the steady pressure gauge at about 0.98-----1.177Mpa, can be considered appropriate, the pressure is too high to cut a little pressure, hour plus a short trial, until the appropriate date, then the capillary and an evaporator connected. Vacuum and charge refrigerant. Two Most factories use test method to determine the length of the capillary, the equipment needed: high-pressure bottle, flowmeter, hydraulic measurement and pressure measurement conditions, and in the maintenance because of conditions, its difficult; here is a convenient measuring method: For a double tail drying filter in the refrigerator condenser output needs to replace the capillary end of the welded joint and the condenser pipe (pipe selection 5 mm diameter copper tube and three gauge frame, in the choice of a basically and the diameter of the capillary tube length are similar in length, according to the power of the compressor estimates, usually in the 2 meters -2.8 meters between the end to a dry filter. The output end of the insertion depth of 0.5~1 cm in general should not be too deep, too deep will touch the drying filter filter clogging, can not be too short, too short to loot by capillary caliber, correct welding, open compressor the export process, open the compressor connected to the drying filter check the pressure gauge on the pressure, depending on the choice of different refrigerant pressure, such as pressure too high Cut some capillaries, and vice versa, as long as the pressure range is below. The pressure range of different refrigerants is provided below: R12 11.5~12.5KG/CM2 R134 10.5~11.5KG/CM2 R22 15.5~18KG/CM2 R600 9.6~10.