A kind of Small Centrifugal Fan
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Technical field
The present invention relates to a kind of Small Centrifugal Fan.
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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.
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Summary of the invention
The object of the invention provides a kind of Small Centrifugal Fan.
In order to achieve the above object, the technical solution adopted in the present invention is: a kind of Small Centrifugal Fan, it comprises motor, the impeller that is fixedly connected with the rotating shaft of motor, described impeller comprises the chassis, with the air supplying ring of the coaxial setting in chassis and be fixed on the chassis and air supplying ring between the multi-disc blade, 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, and centrifugal blower also comprises the dunnage that rotates and be connected with the roller end of described motor, parallel and chassis and the base plate that is fixedly connected with air supplying ring, be connected many connecting rods between dunnage and the base plate.
Impact the noise that produces for reducing air-flow and blade, 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.
Be fixedly impeller and motor, described connecting rod is made up of perpendicular and fixedly connected transverse part and vertical portion, and described transverse part is parallel to base plate and end and dunnage and is fixedly connected, and described vertical portion is fixedly connected perpendicular to base plate and end and base plate.
Further, described connecting rod has 3~6.
Further, described connecting rod circular array is distributed in around the dunnage.
Owing to adopt technique scheme, the present invention has the following advantages: the present invention adopts elongated connecting rod, base plate and dunnage that motor and impeller are fixed, be fixed near the connecting rod of exhaust outlet and be elongate, can not stop the outflow of exhaust outlet air-flow, improved the flow of air-flow, improve air quantity, also reduced the noise that the gas shock connecting rod produces 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;
Accompanying drawing 4 is the three-dimensional view of impeller of the present invention and motor;
Wherein: 1, base plate; 2, connecting rod; 3, impeller; 4, motor; 5, dunnage; 6, blade; 7, air supplying ring; 8, chassis; 9, exhaust outlet; 21, transverse part; 22, vertical portion; 61, blade root; 62, blade tip; 71, intake grill.
Embodiment
Below in conjunction with accompanying drawing, the preferred specific embodiment of the present invention is described.
As shown in Figure 3, this Small Centrifugal Fan, it comprises motor 4, the impeller 3 that is fixedly connected with the rotating shaft of motor 4, with the roller end of described motor 4 the rotate dunnage 5 that is connected, parallel and chassis 8 and and the base plate 1 that is fixedly connected of air supplying ring, be connected many connecting rods 2 between dunnage 5 and the base plate 1.
As shown in Figure 2, described impeller 3 comprise chassis 8, with the air supplying ring 7 of chassis 8 coaxial settings and be fixed on chassis 8 and air supplying ring 7 between multi-disc blade 6.
The interior ring of described air supplying ring 7 is the intake grill 71 that air-flow flows into, and described chassis 8, air supplying ring 7 are exhaust outlet 9 with each hole that adjacent two blades 6 are surrounded, and centrifugal blower also comprises.
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.As shown in Figure 4, described motor 4 is installed in the cavity that blade 6 surrounded.
Described connecting rod 2 is made up of perpendicular and fixedly connected transverse part 21 and vertical portion 22, and described transverse part 21 is parallel to base plate 1 and end and dunnage 5 and is fixedly connected, and described vertical portion 22 is fixedly connected perpendicular to base plate 1 and end and base plate 1.Described dunnage 5 is square, and described connecting rod 2 has 4, and its circular array is fixedly connected with 4 angles of dunnage 5 respectively.Elongated connecting rod 2 can not stop the outflow of exhaust outlet air-flow, has improved the flow of air-flow, has improved air quantity, reduces the noise that the gas shock connecting rod produces simultaneously yet.
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.