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Centrifugal fan and air purifying equipment

A centrifugal fan and equipment technology, applied in the direction of mechanical equipment, machine/engine, liquid fuel engine, etc., can solve the problems of large space, high cost, high noise, etc., and achieve the effect of low noise, high static pressure output, and low cost

Pending Publication Date: 2018-03-27
陆勇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For single-stage centrifugal fans, if you want to increase the static pressure, you can increase the diameter of the impeller set and change the angle of the impeller set, but it will be affected by the actual installation position; or, without changing the diameter and angle of the impeller set , you can increase the motor speed, but at this time the noise is larger
For two single-stage centrifugal fans connected in series to form a two-stage motor, the cost is higher and more space is required

Method used

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  • Centrifugal fan and air purifying equipment
  • Centrifugal fan and air purifying equipment
  • Centrifugal fan and air purifying equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] figure 1 It is a structural schematic diagram of the first embodiment of the centrifugal fan of the present invention, such as figure 1 As shown, the centrifugal fan in this embodiment may include a motor 10 , a volute 11 , a first impeller set 12 , a second impeller set 13 and a bearing housing 14 .

[0039] In this embodiment, the motor 10 may include a motor main body 101, a first bearing 102, a first rotating shaft 103, a second bearing 104 and a second rotating shaft 105; One end of the first rotating shaft 103 is rotationally connected with the first bearing 102, the other end of the first rotating shaft 103 is fixedly connected with the first impeller group 12, one end of the second rotating shaft 105 is rotationally connected with the second bearing 104, and the second The other end of the rotating shaft 105 passes through the second impeller set 13 and is rotatably connected to the bearing housing 14, and the second impeller set 13 is fixed on the second rotat...

Embodiment 2

[0047] figure 2 It is a schematic structural diagram of the second embodiment of the centrifugal fan of the present invention, as figure 2 Shown, the centrifugal fan of this embodiment is in figure 1 On the basis of the illustrated embodiment, a first flow guide mechanism 15 and a second flow guide mechanism 16 may be further included. Wherein, the first air guide mechanism 15 is arranged at the first air inlet 112 , and the second air guide mechanism 16 is arranged at the second air inlet 113 .

[0048] For example, in this embodiment, both the first flow guide mechanism 15 and the second flow guide mechanism 16 can be realized by using a flow guide cover. After the first air inlet 112 and the second air inlet 113 are covered by the guide cover, a sealed return air passage can be formed, making the structure of the centrifugal fan more compact, thereby reducing the occupied space of the centrifugal fan.

Embodiment 3

[0050] image 3 It is a structural schematic diagram of the third embodiment of the centrifugal fan of the present invention, as figure 2 Shown, the centrifugal fan of this embodiment is in figure 2 On the basis of the illustrated embodiment, a motor bracket 17 and a bearing seat bracket 18 may be further included.

[0051] like image 3 As shown, the motor main body 101 is fixed in the cavity 111 of the volute 11 through the motor bracket 17. For example, the motor main body 101 can be fixed on the motor bracket 17 by means of riveting, bolt assembly, welding, etc., and the motor bracket 17 can be fixed on the Inside the chamber 111 of the volute 11 .

[0052] In this embodiment, the bearing seat bracket 18 can be fixed on the volute 11 and located outside the chamber 111 of the volute 11 , and the bearing seat 14 can be fixed on the bearing seat bracket 18 . Similarly, the bearing seat bracket 18 can be fixed on the volute 11 and the bearing seat 14 can be fixed on the...

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Abstract

The invention discloses a centrifugal fan and air purifying equipment. The centrifugal fan comprises a motor, a volute, a first impeller unit, a second impeller unit and a bearing seat. The motor comprises a motor body, a first bearing, a second bearing and a second rotary shaft; a first rotary shaft and the second rotary shaft are extended from a motor shaft and are arranged on two sides of the motor body; one end of the first rotary shaft is rotatably connected with the first bearing; the other end of the first rotary shaft is fixedly connected with the first impeller unit; one end of the second rotary shaft is rotatably connected with the second bearing; the other end of the second rotary shaft penetrates through the second impeller unit so as to be rotatably connected with the bearingseat; the second impeller unit is fixed onto the second rotary shaft; the volute comprises a chamber, a first air inlet and a second air inlet; the motor body and the first impeller unit are arrangedin the chamber; and the second impeller unit and the bearing seat are arranged outside the chamber. By adopting the technical scheme provided by the invention, the centrifugal fan can realize low-noise and high-hydrostatic-pressure output on the premise of low cost and a smaller space.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a centrifugal fan and air purification equipment. Background technique [0002] In recent years, the problem of PM2.5 pollution has become increasingly serious, and the market demand for various air purifiers and fresh air exchange systems is increasing. But for small household air purifiers and fresh air exchange systems, how to choose a low-noise, small-size centrifugal fan is a troublesome matter. The higher the efficiency of the filter material, the higher its resistance, and the higher the static pressure required by the motor. [0003] Existing centrifugal fans are usually single-stage centrifugal fans or two single-stage centrifugal fans connected in series to form a two-stage motor. For single-stage centrifugal fans, if you want to increase the static pressure, you can increase the diameter of the impeller set and change the angle of the impeller set, but it wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D25/08F04D29/70F04D29/28F04D29/00
CPCF04D25/08F04D29/002F04D29/28F04D29/701
Inventor 陆勇
Owner 陆勇
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