Heat recycling backflow welding machine

Abstract

The invention discloses a heat recycling backflow welding machine comprising a pre-heating zone, a welding zone and a cooling zone which are sequentially distributed from left to right, and a printed circuit board (PCB) conveying system which is used for driving a PCB to sequentially pass through the pre-heating zone, the welding zone and the cooling zone; the heat recycling backflow welding machine also comprises a heat recycling system which is arranged above the pre-heating zone and the welding zone; the heat recycling system comprises a pre-heating zone air inlet channel I, a pre-heating zone air inlet channel II, a heat recovery channel, a pipeline fan, a filter, a welding zone air outlet channel I, a welding zone air outlet channel II and a cold and heat integrated air outlet channel; the left end of the heat recovery channel is communicated with the pre-heating zone air inlet channel I and the pre-heating zone air inlet channel II, and the right end of the heat recovery channel is communicated with the cold and heat integrated air outlet channel; the pipeline fan and the filter are arranged in the middle part of the heat recovery channel; and the welding zone air outlet channel I and the welding zone air outlet channel II are arranged on the heat recovery channel. The heat recycling backflow welding machine can greatly reduce the electricity consumption when the backflow welding machine is used.

Description

technical field [0001] The invention relates to a reflow soldering machine, in particular to a thermal energy recycling reflow soldering machine capable of reducing electric energy consumption during the use of the reflow soldering machine. Background technique [0002] As human society enters the low-carbon era, energy conservation and emission reduction are important tasks in all aspects of society, especially in production. Reflow soldering machines are high energy-consuming equipment, and energy saving of reflow soldering machines is extremely important to manufacturers. At present, the conventional energy-saving measures for reflow soldering machines are to do a good job of heat preservation for the furnace body of the reflow soldering machine. Generally, the reflow soldering machine is divided into three areas: preheating zone, welding zone and cooling zone. The temperature in the soldering temperature zone is the highest in each temperature zone of the reflow solderin...

AI Technical Summary

Problems solved by technology

Generally, the reflow soldering machine is divided into three areas: preheating zone, welding zone and cooling zone. The temperature in the soldering temperature zone is the highest in each temperature zone of the reflow soldering machine, and the physical distance between the soldering zone and the cooling zone is relatively close, only 100mm-200mm , the hot and cold air spread to each other's temperature zone, which not only affects the cooling of the PCB, but also wastes energy. At the same time, the large temperature difference between the soldering zone and the cooling zone will consume a lot of power, which has not been paid attention to by the industry.

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