Air returning pipe of single-cold air conditioning outdoor unit and air conditioner

Abstract

The invention discloses an air returning pipe of a single-cold air conditioning outdoor unit and an air conditioner, and belongs to the technical field of air conditioning. The air returning pipe comprises a plurality of pipe sections which are connected in sequence and form a semi-closed surrounding structure. The plurality of pipe sections include a first straight pipe section, a second straightpipe section, a third straight pipe section, a fourth straight pipe section, a fifth straight pipe section, a sixth straight pipe section, and a seventh straight pipe section. The plurality of pipe sections are arranged along a vertical direction, and adjacent straight pipe sections are connected through an arc pipe section. Radian of the arc pipes of the air returning pipe of a single-cold air conditioning outdoor unit is obtuse angle radian, stress is relatively low, and the first arc pipe section extends upward, and a problem that start-stop stress of a first downward arc pipe section is excessive can be prevented, the problem usually appearing in an existing air returning pipe. Rigidity and flexibility of the air returning pipe are balanced. The air returning pipe in the semi-closed surrounding structure can do relative movement stably with a compressor, and pipeline vibration is low. Length of a whole pipeline is relatively short, and cost is low.

Description

Technical field [0001] The invention relates to the technical field of air conditioners, in particular to a return pipe of an outdoor unit of a single cooling air conditioner and an air conditioner. Background technique [0002] At present, the vibration, stress and noise of the air return pipe of the outdoor unit of the air conditioner have always been the main problems that plague engineers. Excessive vibration and stress of the pipe will cause the pipe to break, and the refrigerant will leak, causing the air conditioner to fail to work properly. The vibration and noise also directly affect the comfort of the user experience. The direction, length, and wall thickness of the pipeline have a comprehensive influence on the vibration and stress. The design of length and wall thickness follows the design principle of ensuring structural strength and the lowest cost. The direction of the pipeline is usually designed based on experience. The repeated design, trial production, and tes...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a return air pipe of an outdoor unit of a single-cooling air conditioner and an air conditioner, aiming to solve the problems of the conventional air return pipe structure with many vibrations, concentrated stress, and high noise

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