Fabrication process of heat sink, heat sink bar, PTC ceramic heater and heat sink bar

Abstract

The invention discloses a fabrication process of a heat sink, a heat sink bar, a PTC ceramic heater and a heat sink bar.mThe heat dissipation fin is composed of a corrugated heat dissipation unit on the one hand, and the heat dissipation fin and the fixed fin is directly connected on the other hand by a brazing process on the other hand, which can not only enhance heat dissipation effect and reduce condensation phenomenon, but also improve production efficiency of the heat dissipation. The manufacturing process of the heat dissipation strip comprises the following steps: the heat dissipation fin and the fixing fin are made of 3003 aluminum-manganese alloy, 4043 aluminum-silicon alloy or composite materials of the two; the heat dissipation fin and the fixing fin are made of 3003 aluminum-manganese alloy and 4043 aluminum-silicon alloy; S1, spraying welding powder onto the fixing piece; 2, the heat radiating fin on the fixing fin and sending the heat radiating fin is placed to a brazingfurnace for welding; S3, the welded heat sink and the fixed fin are cooled to obtain a heat sink.

Description

technical field [0001] The invention relates to the field of heaters, in particular to a manufacturing process of a heat sink, a heat radiation bar, a PTC ceramic heater and a heat radiation bar. Background technique [0002] The PTC heater is a common heating device, which is mainly used in the heating equipment of the air conditioner cabinet type, and the PTC heater is generally equipped with a heat dissipation strip structure. [0003] The structure of the existing PTC heater cooling strip mainly includes: an upper fixing piece and a lower fixing piece whose lower end is connected with the heating core of the PTC heater, and a cooling fin is arranged between the upper fixing piece and the lower fixing piece. The heat sink structure of the existing PTC heater heat dissipation strip is generally straight and inclined, the contact area is small, the heat dissipation effect is not ideal, and condensation is prone to occur, which affects the quality of the air conditioner, and...

AI Technical Summary

Problems solved by technology

The heat sink structure of the existing PTC heater heat dissipation strip is generally straight and inclined, the contact area is small, the heat dissipation effect is not ideal, and condensation is prone to occur, which will affect the quality of the air conditioner, and even cause machine damage. The coefficient is poor, and at the same time, the heat sink of the existing PTC heater cooling strip also has the disadvantages of poor structural strength, easy bending and damage, and short service life

In addition, in the production of traditional cooling strips, the cooling fins are glued to the fixed sheet by glue coating. This method not only needs to go through processes such as glue coating, grinding, heating and curing, and the working hours are relatively long, but also in the production process. It is also easy to generate exhaust gas, and after a long time of use, the heat sink will also fall due to the aging of the glue

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