The refrigerant circuit of the existing multi-parallel flow condenser is not a single cycle, but is circulated through a plurality of circuits, the structure is complicated, the heat exchange effect is poor, and the resistance on the refrigerant side and the air side is large. The needle of the utility model comprises D type shape parallel flow header aluminum tube pipe, characterized in that two pipe joint seats are installed on the first collecting pipe, and the first collecting pipe and the second collecting pipe are connected by a plurality of flat pipes. The flat tube is embedded with a plurality of fins.
A new type of system involving a system of an automobile air conditioner, in particular, a new kind of condenser by D type shape parallel flow header aluminum tube pipe. The refrigerant circuit of the existing multi-parallel flow condenser is not a single cycle but is circulated through a plurality of circuits. The structure is complicated, the heat exchange effect is poor, and the resistance on the refrigerant side and the air side is large.
To this end, the utility model adopts the following technical scheme, a D-tube parallel flow condenser, comprising D type shape parallel flow header aluminum tube pipe, characterized in that two pipe joint seats are installed on the first collecting pipe, first The collecting pipe and the second collecting pipe are connected by a plurality of flat pipes, and the flat pipes are embedded with a plurality of fins. The refrigerant enters the D-type first header from the pipe joint, then branches into the elliptical flat pipe, flows parallel to the opposite second header, and finally returns to the pipe joint seat through the other flat pipe. Fins (heat sinks) are embedded between the flat tubes. The condenser made by D type shape parallel flow header aluminum tube pipe has low pressure loss on the air side and the refrigerant side, high heat transfer coefficient, light weight, compact structure and less refrigerant charge.
The cross section of the collecting tube is D-shaped, and the flat tube has an elliptical cross section. When D type shape parallel flow header aluminum tube pipe is in the same cross-sectional area, the inner circumference of the D-shaped tube is larger than the round tube, so that the contact radius of the refrigerant and the air is large, the heat dissipation is easy to reduce the flow resistance of the mass refrigerant, and the heat dissipation under the same conditions is further improved.
