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Supermarket refrigerated showcase evaporator soil embedding and production (9)
author: supermarket refrigerated showcase category: commercial refrigeration Views: 800Time: 2016-08-22
supermarket refrigerated showcase evaporator soil embedment and production (9)
1. Preparation of materials and tools The self-made evaporator materials and tools include several kilograms of 8 mm diameter copper tubes, diameter 4 The millimeter copper pipe is about 1 meter, small pipe bender, small pipe cutter and box ruler. For supermarket refrigerated showcase 180L～230L, 2.5kg red copper tube is generally prepared, and other supermarket refrigerated showcases can be increased or decreased on this basis.
2. Calculation of the evaporator size, the self-made refrigerated evaporator size is slightly larger than the original evaporator size. The width of the self-made refrigerating evaporator = the depth of the bladder inside the freezer-1cm-2cm (so as not to close the door). The length of the self-made refrigerated evaporator = the height of the freezer X2 ten the width of the freezer. Original evaporator size and measurement method. The protruding part of the back of the refrigerator compartment is the size of the original refrigerator evaporator. The height of the freezer compartment x2 ten width = the total length of the original freezer evaporator, the depth of the freezer = the width of the original freezer evaporator.
3. Self-made evaporator nozzle position and reserved length The self-made evaporator nozzle position should be the same as the original evaporator, and the length of the nozzle depends on whether there is an evaporator interface box. The principle is that the upper and lower evaporators can be connected to facilitate welding operations.
(1) There are evaporator interface box models, the upper and lower evaporator nozzles are located in the interface box. According to the principle of the nearest connection pipes, the upper and lower evaporators and compressors are connected in the middle of the back of the supermarket refrigerated showcase body. The length of the two pipe ports is guaranteed to reach the upper and lower evaporator interface boxes, and can be connected to the capillary and compressor. Machine nozzle connection. Generally speaking, the two nozzles of the refrigerating evaporator are equal in length, generally about 50 cm. The two nozzles of the refrigerated evaporator are located in the middle, the long nozzle is 50 cm to 80 cm, and the short nozzle is about 20 cm.
(2) Models without evaporator interface box determine the cold storage and freezer compartment length, the position and length of the short pipe orifice according to the return air pipe and supermarket refrigerated showcase. Freezing evaporator: The two nozzles are located on the left and right sides, and the nozzles on the eye side of the supermarket refrigerated showcase are used as frozen evaporators: the two nozzles are located on the left and right sides, and the nozzles on the eye side of the supermarket refrigerated showcase are used as long nozzles. Reserve the length of the two evaporator connecting pipes and the length of the network air pipe, reserve 50 cm-80 cm on one side, and reserve 10 cm ~ 20 cm on the other side of the tube U as a short nozzle. Refrigeration evaporator: The long pipe mouth is located at the upper end, approximately the same width as the evaporator, facing the freezer compartment pipe mouth: the short pipe is located at the lower end, on the same side as the compressor return pipe, and the pipe mouth length is generally reserved for 10 cm to 20 cm.
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