CN2334922Y - Blower fan - Google Patents

Abstract

The utility model relates to a blower fan which is composed of an external rotor electric machine, an electric machine supporting seat, a blower fan volute casing and a wind wheel. The utility model is characterized in that the blower fan is driven by the external rotor electric machine which is fixed in the blower fan volute casing, and the wind wheel is connected with an external rotor of the blower fan. Because the external rotor electric machine and the wind wheel are combined into a whole body, the utility model has the advantages of good centring performance and dynamic balancing, small oscillation, low noise, and reduced difficulty of the assembly and maintenance of the blower fan coiled pipe.

Description

A kind of blower fan

The utility model relates to blower fan, and it is specially adapted to operation of air conditioning systems.

The fan coil unit of present domestic operation of air conditioning systems mostly adopts one or many inner rotor motors by the axle on the internal rotor, drives the blower fan wind wheel of fan coil unit, its deficiency is, inner rotor motor and blower fan are two separate components, and after interconnecting with it by inner rotor shaft, motor shaft is elongated yielding, dynamic balancing is difficult to reach requirement, so vibrations are big, because blower fan wind wheel and inner rotor motor axle connect,, wind wheel and spiral case center depart from again and being easy to generate, poor to neutrality, noise is big.

The purpose of this utility model is exactly in order to overcome above-mentioned shortcoming, and it is an integral body that a kind of motor and wind wheel are provided, and good to neutrality, dynamic balance is good, vibrate little, the blower fan that noise is low.

The technical solution of the utility model is finished like this: blower fan adopts outer rotor motor driven, and external rotor electric machine is fixed in the volute of blower, and wind wheel is connected with the external rotor of motor.

The utlity model has following advantage: blower fan adopts outer rotor motor driven, and its motor and wind wheel are an integral body, and be good to neutrality, good dynamic balance, so vibrate for a short time, noise is low, and the difficulty that significantly reduces happy fan coil unit assembling and keep in repair.

Fig. 1 is the utility model structural representation.

Fig. 2 is the utility model motor and wind wheel connection diagram.

Now further describe embodiment in conjunction with drawing: the external rotor electric machine blower fan is by external rotor electric machine (3) motor bearing (2), volute of blower (4) and wind wheel (1) are formed, the external rotor electric machine stator is fixedlyed connected with volute of blower (4) by motor bearing (2), wind wheel (1) is locked outside on the rotor flange (14) by bolt (13) by wind wheel central diaphragm (12), be connected with motor outer rotor, external rotor electric machine (3) is installed in together with wind wheel (1) forms outer rotor blower fan air-supply part in the spiral case (4); The air heat exchange part is by top board (7), base plate (10), sealing plate (10), exchanger (8) and coagulate water pond (11) and form, base plate (10), top board (7), sealing plate (9) forms an air-flow path, heat exchanger (8) places air-flow path, outer rotor blower fan air-supply part is by being fixed on the blower fan seat (6) by screw with the air heat exchange part in the air blowing opening on volute of blower (4) the outlet insertion blower fan seat, and external rotor electric machine air-supply part partly is connected and fixed the composition fan coil unit with air heat exchange.

When motor outer rotor rotates, drive wind wheel and rotate, form air-flow, air-flow enters the heat exchange department subentry from the volute of blower outlet, by heat exchanger work, forms the air conditioner refrigerating circulation.

One typhoon coiler can make one or many external rotor electric machine blower fans; The external rotor of one external rotor electric machine also can drive one typhoon machine or many typhoons machine in addition by coupling body.

Claims (1)

1. a blower fan comprises external rotor electric machine, the motor bearing, and volute of blower and wind wheel are formed, and it is characterized in that blower fan adopts outer rotor motor driven, and external rotor electric machine is fixed in the volute of blower, and wind wheel is connected with the external rotor of motor.

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