A kind of electric machine external formula centrifugal blower
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Technical field
The present invention relates to a kind of electric machine external formula centrifugal blower.
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Background technique
At present the industry of domestic demands blower fan adopts axial-flow blower mostly, and there are following many shortcomings in axial-flow blower: complex structure, fault are more, maintenance difficult, efficient is not high, noise is big, static pressure is low, air quantity is little, less stable during parallel operation; Its motor of some centrifugal blower is arranged on impeller inside, has stopped that to a certain extent air-flow flows into intake grill, has reduced the air quantity of centrifugal blower.
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Summary of the invention
The object of the invention provides a kind of electric machine external formula centrifugal blower.
In order to achieve the above object, the technical solution adopted in the present invention is: a kind of electric machine external formula centrifugal blower, it comprises motor, and between impeller that machine shaft is fixedly connected and fixed electrical machinery and the impeller support, described impeller comprises the chassis, be arranged on the air supplying ring and the multi-disc blade of chassis one side, described air supplying ring and the coaxial setting in chassis, between described vanes fixed and chassis and the air supplying ring, the interior ring of described air supplying ring is the intake grill that air-flow flows into, described chassis, each hole that air supplying ring and adjacent two blades are surrounded is an exhaust outlet, described motor is installed on the chassis opposite side, and the rotating shaft of motor and chassis are fixedly connected.
For ease of fixing of motor and impeller, described centrifugal blower also comprise parallel with the chassis and and the air supplying ring base plate, the middle part that are fixedly connected are set in the rotating shaft between motor and the chassis and two ends and base plate are fixedly connected dunnage, described base plate and intake grill opposite position offer and intake grill circular hole of the same size.
Further, described dunnage comprises the transverse part that is parallel to the base plate setting, the vertical component effect that is vertically connected on the transverse part two ends respectively and is fixedly connected with base plate.
Air quantity falls in order to improve, low noise, described blade is that the round dot circular array distributes with the center of circle on chassis, and nearer end is a blade tip from the center of circle for it, and an end far away is a blade root from the center of circle, and described blade root is extended to blade tip along arc and radian is increased progressively by blade root to blade tip.
Further, the motor below fixedly installs the base that is useful on support motor.
Owing to adopt technique scheme, the present invention has the following advantages: motor is arranged on the outside, impeller chassis, makes air-flow enter intake grill with having no to stop, flow out from exhaust outlet, improve air quantity greatly, reduced the noise that air-flow and electromechanical shock are produced simultaneously.
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Description of drawings
Accompanying drawing 1 is the three-dimensional view of blade of the present invention;
Accompanying drawing 2 is the three-dimensional view of impeller of the present invention;
Accompanying drawing 3 is a three-dimensional view of the present invention;
Wherein: 1, base plate; 2, base; 3, impeller; 4, motor; 5, dunnage; 6, blade; 7, air supplying ring; 8, chassis; 9, exhaust outlet; 51, transverse part; 52, vertical portion; 61, blade root; 62, blade tip; 71, intake grill.
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Embodiment
Below in conjunction with accompanying drawing, the preferred specific embodiment of the present invention is described.
As shown in Figure 3, described centrifugal blower comprise motor 4, between the impeller 3 that is fixedly connected with motor 4 rotating shafts, fixed electrical machinery 4 and the impeller 3 support 5, motor 4 belows fixedly install that the base 2, the chassis 8 that are useful on support motor 4 parallel and and the base plate 1 that is fixedly connected of air supplying ring 7 and middle part are set in the rotating shaft between motor 4 and the chassis 8 and two ends and base plate 1 are fixedly connected dunnage 5.
As shown in Figure 2, described impeller 3 comprises chassis 8, is arranged on air supplying ring 7 and eight blades 6 of chassis 8 one sides, described air supplying ring 7 and chassis 8 coaxial settings, between described blade 6 fixing and chassis 8 and the air supplying ring 7, the interior ring of described air supplying ring 7 is the intake grill 71 that air-flow flows into, described chassis 8, air supplying ring 7 is exhaust outlet 9 with each hole that adjacent two blades 6 are surrounded, and described motor 4 is installed on chassis 8 opposite sides, and the rotating shaft of motor 4 and chassis 8 are fixedly connected.
Described base plate 1 offers and intake grill 71 circular holes of the same size with intake grill 71 opposite positions, and air-flow enters intake grill 71 from circular hole.
Described dunnage 5 comprises the transverse part 51 that is parallel to base plate 1 setting, the vertical component effect 52 that is vertically connected on transverse part 51 two ends respectively and is fixedly connected with base plate 1.
As shown in Figure 1, described blade 6 is that the round dot circular array distributes with the center of circle on chassis 8, and nearer end is a blade tip 62 from the center of circle for it, and an end far away is a blade root 61 from the center of circle, and described blade root 61 is extended to blade tip 62 along arc and radian is increased progressively by blade root 61 to blade tip 62.
The foregoing description only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this; can not limit protection scope of the present invention with this, all equivalences that spirit is done according to the present invention change or modification all should be encompassed within protection scope of the present invention.