Floor type air conditioner and oblique flow fan thereof

Abstract

The invention discloses a floor type air conditioner and an oblique flow fan thereof. The oblique flow fan comprises a hub which can be rotationally driven and a plurality of blades arranged around the hub; the hub comprises a head part and a tail part; the outer size of the hub is gradually decreased from the head part to the tail part; each blade comprises a blade root connected with the hub, a blade top far away from the hub, an air outlet end close to the head part and an air inlet end close to the tail part; and when the blades rotate around the axis of the hub, the ratio of the diameter of the rotating circumference in which the air inlet ends of the blade roots are positioned to the diameter of the rotating circumference in which the air inlet ends of the blade tops are positioned is an air inlet end hub ratio, the ratio of the diameter of the rotating circumference in which the air outlet ends of the blade roots are positioned to the diameter of the rotating circumference in which the air outlet ends of the blade tops are positioned is an air outlet end hub ratio, and the air inlet end hub ratio is less than the air outlet hub ratio. The oblique flow fan disclosed by the invention has the characteristics of axial air feeding and oblique air discharging; when the air feed distance is ensured, the air output is increased and the air feeding efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a floor-standing air conditioner and a diagonal flow fan thereof. Background technique [0002] Existing floor-standing air conditioners such as figure 1 , figure 2 As shown, most of the fan air duct systems use centrifugal fans, the volute 1 and the centrifugal fan 2 are arranged at the lower part of the inner chamber of the air conditioner, the heat exchanger 3 is arranged at the upper part of the inner chamber of the air conditioner and placed obliquely, and the air inlet 4 and the outlet The air outlets 5 are respectively arranged on the lower and upper parts of the casing, the air inlet 4 is located in front or side front of the casing, the air outlet 5 is located in front of the casing, and the lower fan duct system blows air to the upper heat exchanger to achieve The purpose of rapid heat exchange. [0003] There are also a small number of floor-standing air c...

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Problems solved by technology

[0005] However, the above-mentioned floor-standing air conditioners using centrifugal fans or cross-flow fans, although the centrifugal force generated when the blades rotate can send the wind a long distance, and the air supply distance is relatively large, but because the air volume sucked by it is small, when the air is supplied The air needs to be sent out at a large angle, and the air volume loss is large, so the air volume sent out is less, resulting in low air supply efficiency

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