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Low-noise and efficient cooling axial flow fan of central air conditioner outdoor unit

A central air-conditioning and outdoor unit technology, applied in the direction of machines/engines, mechanical equipment, liquid fuel engines, etc., can solve the problems of high noise and reduced fan efficiency, and achieve the goals of reducing airflow noise, improving fan efficiency, and increasing the annular area Effect

Active Publication Date: 2014-03-12
ZHE JIANG YILIDA VENTILATOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem that the cooling axial flow fan of the outdoor unit of the central air conditioner uses the traditional cylindrical hub, which not only causes the noise generated by the fan to be large during operation, but also reduces the efficiency of the fan.

Method used

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  • Low-noise and efficient cooling axial flow fan of central air conditioner outdoor unit

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0016] see Figure 1 to Figure 4 , the present invention provides a low-noise and high-efficiency central air-conditioning outdoor unit cooling axial flow fan, comprising an air cylinder (1), a motor bracket (2) arranged above the air cylinder (1), and a motor bracket (2) installed at the center of the motor bracket (2). The motor (3), the hub (5) connected with the motor rotating shaft (4) and several blades (6) fixed on the hub (5), the hub (5) includes the hub inner liner (7), welded A shaft sleeve (8) connected to the center position of the hub inner liner (7); the shaft sleeve (8) matches the rotating shaft (4) of the motor; The hub connecting plate (9) is uniformly distributed in the center of the shaft sleeve; several screw holes (10) are arranged on the hub connecting plate (9); the initial The edges on both sides of the part (20)...

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Abstract

The invention discloses a low-noise and efficient cooling axial flow fan of a central air conditioner outdoor unit. The low-noise and efficient cooling axial flow fan comprises an air duct, a motor support, a motor, a hub a plurality of blades which are fixed on the hub, wherein the motor support is arranged above the air duct, the motor is arranged at the center of the motor support, and the hub is connected with a motor rotary shaft. The hub comprises a hub inner lining panel and a shaft sleeve which is connected to the center of the hub inner lining panel in a welded mode; the shaft sleeve is matched with the motor rotary shaft; the periphery of the hub inner lining panel extends to form a plurality of hub connection boards which are evenly distributed with the shaft sleeve as the center; each hub connection board is provided with a plurality of thread hole; each hub connection board is twisted in the reverse direction from the two side edges of the primary portion where the hub inner lining panel extends. The low-noise and efficient cooling axial flow fan of the central air conditioner outdoor unit lowers vortex loss of the wall surface by decreasing the hub ratio, and decreases flowing speed of air flow, thereby effectively lowering noises caused by the air flow.

Description

technical field [0001] The invention relates to an axial flow fan, in particular to a low-noise and high-efficiency central air-conditioning outdoor unit cooling axial flow fan. Background technique [0002] With the vigorous development of national energy conservation and emission reduction and the popularization of energy efficiency standards, fan manufacturers have higher and higher requirements for product performance, efficiency and noise, especially for the existing central air-conditioning outdoor cooling axial fans. High, but the hub used by most central air-conditioning outdoor unit cooling axial flow fans is a traditional cylindrical type, and the noise of the fan operation is generated by the interaction between the rotation of the impeller and the interaction between nearby components. The impeller is composed of blades and hubs. When the traditional cylindrical hub is at the air inlet of the fan, it will affect the airflow at the inlet and generate an inlet vor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/32F04D29/38F04D29/66
Inventor 章启忠沈坤华张维周爱进
Owner ZHE JIANG YILIDA VENTILATOR CO LTD
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