Double-centrifugal fan and air-conditioner

Abstract

The invention discloses a double-centrifugal fan and an air-conditioner. The double-centrifugal fan comprises a volute, double centrifugal wind wheels, a motor frame and a motor. The volute is provided with two end plates which are oppositely arranged and a coaming which is connected between the two end plates. Each end plate is provided with an air inlet, and the two circumferential ends of the coaming and the two end plates define an air outlet. The double centrifugal wind wheels comprise blade rings and hubs. The hubs are arranged in the corresponding blade rings. A plurality of inserting grooves arrayed in the circumferential direction in a spaced mode are formed in the outer circumferential wall of each hub. A plurality of blades are inserted into the inserting grooves in a one-to-one correspondence mode. The portions, located at the two sides of the corresponding hub, of each blade ring and the hub form one centrifugal wind wheel, and the double centrifugal wind wheels are arranged in the volute. The motor frame is fixed to the coaming and is provided with a resistance reducing hole, and the motor is arranged on the motor frame. A motor shaft of the motor is connected with the hubs. The double-centrifugal fan disclosed in the embodiment of the invention has the characteristics of being low in production cost, low in weight, large in air outlet capacity and small in working noise.

Description

technical field [0001] The invention relates to the field of air conditioning equipment, in particular to a double centrifugal fan and an air conditioner. Background technique [0002] In the current field of air conditioning equipment in China, the fans used in air conditioners generally have the problems of small air volume and high noise. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, the present invention aims to provide a double centrifugal fan with large air volume and low noise. [0004] The present invention also aims to provide an air conditioner comprising the double centrifugal fan. [0005] The double centrifugal fan according to the embodiment of the present invention includes: a volute, the volute has two opposite end plates and a shroud connected between the two end plates, each of the end plates has An air inlet is provided, and the circumferential ...

AI Technical Summary

Problems solved by technology

[0002] In the current field of air conditioning equipment in China, the fans used in air conditioners generally have the problem of small air volume and high noise.

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