Flat-pipe heat exchanger structure and assembling table thereof

Abstract

The invention discloses a flat-pipe heat exchanger structure which comprises an inlet header, an outlet header, fins and a flat pipe, wherein the fins are compactly stacked between the inlet header and the outlet header; the flat pipe communicates the inlet header with the outlet header by penetrating through the fins; the cross section of the flat pipe is a rounded rectangle; two side plates of the flat pipe project forward along the pipeline to form a leading end; the fins are provided with a pipeline groove; and the middle of the pipeline tank is provided with a rectangular opening of which the width is smaller than the thickness of the flat pipe. The invention also discloses an assembling table of the flat-pipe heat exchanger structure, which comprises a platform, wherein a through hole corresponding to the pipeline groove is formed on the edge of the platform. The fins in the heat exchanger structure are connected with the flat pipe in an interference mode, thereby maximally increasing the contact area of the fins and the flat pipe, benefiting heat abstraction, enhancing the heat abstraction performance of the heat exchanger, and ensuring the strength of the heat exchanger. By eliminating the welding procedure, the invention is easy to operate and saves more cost.

Description

technical field [0001] The invention relates to an air conditioner, in particular to a heat exchanger structure. Background technique [0002] When the room air conditioner is running in cooling mode, the indoor air flows through the evaporator to reduce the temperature. At the same time, because the temperature of the surface of the evaporator is generally significantly lower than the dew point temperature of the air, when the air flows through the surface of the evaporator, part of the moisture in the air will be precipitated, thereby forming condensed water on the surface of the evaporator. Condensed water on the surface of the evaporator should be drained in time. If the condensed water accumulates on the surface of the evaporator, it will block the air passage, increase the flow resistance of the air, and reduce the efficiency of the evaporator: water droplets may also be blown into the room, resulting in unqualified quality of the air conditioner. [0003] Finned tub...

AI Technical Summary

Problems solved by technology

[0005] However, when the heat transfer requirement is large, the thickness of the tube-fin heat exchanger is limited, and the size of the windward side of the tube-fin heat exchanger is required to be large, resulting in a longer serpentine coil, longer refrigerant circulation channels, and refrigerant flow in the coil. The flow heat exchange in the tube, the length ratio of the formed gas phase area, gas-liquid two-phase area, and liquid phase area is unreasonable. Due to the long process, the liquid phase formed after the refrigerant passes through the gas phase area and the gas-liquid two-phase area is heat exchanged. The area is longer, and the heat transfer efficiency of the liquid phase area with a lower refrigerant temperature is low, resulting in a waste of heat transfer area, and the longer liquid phase area increases the cold resistance, which seriously affects the performance of the heat exchanger

[0006] At the same time, the tube expansion process cannot guarantee the connection between the single tube and the fin, and the contact area between the single tube and the fin is small, which directly affects the heat dissipation performance, while the welding process increases the product cost and complicates the processing

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