WO2016090683A1

WO2016090683A1 - Centrifugal fan combined air purifier

Info

Publication number: WO2016090683A1
Application number: PCT/CN2014/095046
Authority: WO
Inventors: 严义清; 李祥武; 严方升
Original assignee: 深圳市普瑞美泰环保科技有限公司
Priority date: 2014-12-09
Filing date: 2014-12-26
Publication date: 2016-06-16
Also published as: CN104406257A; CN104406257B

Abstract

A centrifugal fan combined air purifier comprises a frame (10), centrifugal fans (20) and filter screens (31, 32), wherein the centrifugal fans (20) and the filter screens (31, 32) are arranged on the frame (10). More than one centrifugal fan (20) is provided. The frame (10) comprises a front frame (11), and air ducts (111) for accommodating the centrifugal fans (20) are arranged on the front frame (11). More than one air duct (111) is provided. The air ducts (111) are arranged side by side in the same vertical plane, the central axis of each air duct (111) is perpendicular to the vertical plane, the air inlet direction of each air duct (111) is the same as the air outlet direction of the air duct (111) and is parallel to the central axis of the air duct (111), and the central axis of each centrifugal fan (20) coincides with that of each air duct (111). When the air purifier works, air enters the centrifugal fans (20) from air inlets (112) of the air ducts (111), and air exhausted from the centrifugal fans (20) is gathered in the air ducts (111) to form positive pressure and then sprayed out from air outlets (114) of the air ducts (111).

Description

Centrifugal fan combined air purifier

Technical field

The invention relates to an air purifying device, in particular to a centrifugal fan combined air purifier.

Background technique

Most of the existing air purifiers use an axial flow fan or a centrifugal fan to push the air flow to achieve air purification. The volume of a single fan is relatively large, so that the volume of the air purifier is correspondingly designed to be larger, while running. The noise is also relatively large. On the other hand, the filter net is relatively concentrated in the wind near the wind inlet, which causes the filter to enter the air unevenly and affect the life of the filter.

Chinese patent CN201120099772 discloses an air purifier consisting of a plurality of axial flow fans, which has the characteristics of small volume, but the axial pressure of the axial flow fan is small, and only some clean air nets with small air resistance can be used, and the air volume is increased only Increasing the speed causes a lot of noise.

Chinese patent CN201410218183.4 discloses a multi-combined wind wheel air purifying device. The technical solution of the patent uses a combination of a plurality of wind wheels (ie, centrifugal fans) to disperse the noise generated by a single motor, and has the advantages of increased air inlet area, increased energy efficiency, and low noise. However, since the air outlet is on both sides of the frame, the air is dispersed, the wind is small, and the air is easily formed into a partial air circulation because the air inlet and the air direction are at an angle of 90 degrees (the discharged fresh air quickly enters the air inlet). ), which affects the purification efficiency, and because of the use of both sides of the air, only two rows of fans can be used, so that it is impossible to design a purification device with a larger air volume, and these defects also affect its promotion and application.

Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a centrifugal fan combined air purifier that overcomes the deficiencies of the prior art, reduces noise and ensures adequate wind pressure, and improves overall purification efficiency.

To achieve the above object, the present invention adopts the following technical solutions:

The centrifugal fan combined air purifier comprises a frame body and a centrifugal fan and a filter net arranged on the frame body, and more than one centrifugal fan, the frame body comprises a front frame body, and the front frame body is provided with a wind for accommodating the centrifugal fan The road has more than one air duct, the air ducts are arranged side by side on the same vertical plane, and the central axis of the air duct is perpendicular to the vertical plane; the air inlet direction and the air outlet direction of the air duct are parallel to the middle of the air duct respectively. The axis, the central axis of the centrifugal fan coincides with the central axis of the air duct; when the air purifier is working, the air enters the centrifugal fan through the air inlet of the air duct, and the air from the centrifugal fan gathers in the air duct to form a positive pressure and then from the wind The outlet of the road spouted.

Further, the frame further includes a rear frame body, the rear frame body and the front frame body are fixedly connected to each other, and the rear frame body is provided with an air inlet cavity corresponding to the air passage; when the air purifier is working, the air enters through the air inlet cavity. The air inlet of the duct.

One or more inlet chambers may be provided on the rear frame. When only one air inlet cavity is provided on the rear frame body, a plurality of rear frame bodies need to be installed side by side on the same vertical plane. When more than one air inlet cavity is arranged on the rear frame body, for example, the front frame body has two air passages, and the rear frame body also has two air inlet chambers corresponding to the air passages, then the rear frame body can be integrated. Forming, fewer mounting parts can be placed on the rear frame, which can reduce the overall thickness of the air purifier, reduce installation process and reduce cost.

Further, the filter screen includes an air inlet filter for filtering air entering the air inlet chamber, and the air inlet filter is disposed on the rear side of the rear frame.

Further, the outside of the air inlet filter is provided with an air inlet grille, an air inlet grille or an air inlet grille. The air inlet grille, the air inlet grille and the air inlet grille may be detachable or non-detachable.

Further, the air inlet of the air duct is disposed on the cylindrical air inlet passage, and the air inlet area of the air inlet passage is gradually reduced from the outside to the inside.

Further, the inner wall of the air inlet passage has a concave arc shape in a cross section.

Further, in order to reduce wind noise, the cross-sectional shape of the air passage gradually changes from a circular shape to a square shape from the inside to the outside.

Further, for the convenience of production, the side walls of the air duct and the air inlet chamber are provided with a draft angle.

Further, the centrifugal fan is fixed to an intermediate position of the air duct by a mounting bracket.

Further, the filter net includes an air outlet filter for filtering air ejected from an air outlet of the air duct, and the air outlet filter is disposed in front of the front frame.

The outlet filter and the inlet filter can be installed in either one or both.

Further, an air outlet grid, an air outlet plate or an air outlet mesh plate is further disposed on an outer side of the air outlet filter. The air outlet grille, the air outlet grille and the air outlet grille may be detachable or non-detachable.

The beneficial effects of the present invention compared to the prior art are:

The invention adopts a plurality of centrifugal fans to disperse the noise generated by a single motor, thereby reducing noise, and the direction of the air in and out is in one direction, avoiding local air circulation, and the wind pressure is relatively large, and a filter with high air resistance can be used. Moreover, the air volume is stabilized after the filter resistance is increased, and the efficiency of the filter is improved, thereby improving the purification efficiency of the air purifier. At the same time, more than two rows of centrifugal fan combinations can be realized to achieve greater purification capability, and directional flow of air can be achieved.

DRAWINGS

Figure 1 is an exploded view of the assembly of the first embodiment of the air purifier;

Figure 2 is a partial cross-sectional view showing a first embodiment of the air cleaner;

Figure 3 is an exploded view of the assembly of the second embodiment of the air purifier;

Figure 4 is an exploded view of the assembly of the third embodiment of the air cleaner.

detailed description

In order to more fully understand the technical content of the present invention, the technical solutions of the present invention will be further described and illustrated below in conjunction with specific embodiments.

The specific structure of the first embodiment of the present invention is shown in Figs. 1 and 2.

The air cleaner includes a frame 10 and a centrifugal fan 20 and a filter provided on the frame 10. The filter of the embodiment can filter and purify particulate matter, organic chemical pollutants and pathogens.

The frame body 10 includes a front frame body 11 and a rear frame body 12 that are fixedly coupled to each other. The front frame 11 is provided with a duct 111 for accommodating a centrifugal fan 20. The centrifugal fan 20 is fixed to the intermediate position of the duct 111 by the mounting bracket 21. In this embodiment, there are two centrifugal fans 20, so there are also two air passages 111. The two air ducts 111 are arranged side by side on the same vertical plane, and the central axis of the air duct 111 is perpendicular to the vertical plane.

The rear casing 12 is provided with an air inlet chamber 121 corresponding to the air passage 111. There are also two inlet air chambers 121. In actual production, one or more inlet chambers may be provided on the rear frame. When only one air inlet cavity is provided on the rear frame body, a plurality of rear frame bodies need to be installed side by side on the same vertical plane. When more than one air inlet cavity is disposed on the rear frame, for example, in the present embodiment, the front frame 11 has two air passages 111, and the rear frame body 12 also has two air inlets corresponding to the air passages 111. With the cavity 121, the rear frame 12 can be integrally formed, and fewer mounting components can be disposed on the rear frame 12. This can reduce the overall thickness of the air cleaner, reduce the installation process, and reduce the cost.

The air inlet 112 and the air outlet 114 of the duct 111 are both on the central axis of the duct 111, and the central axis of the centrifugal fan 20 coincides with the central axis of the duct 111. That is, the air inlet direction of the air duct 111 is the same as the air outlet direction and is parallel to the central axis of the air duct 111. The air inlet 112 of the duct 111 is provided on the cylindrical air inlet passage 113 and faces the centrifugal fan 20. The air inlet area of the air inlet passage 113 gradually becomes smaller from the outside to the inside. The inner wall of the air inlet passage 113 has a concave arc shape in cross section to reduce the vortex generated when the air flows, and reduce the loss of the air flow energy.

In addition, for the convenience of production, the air duct 111 and the side wall of the air inlet chamber 121 are provided with a draft angle.

In addition, in order to reduce wind noise, the cross-sectional shape of the air passage 111 gradually changes from a circular shape to a square shape from the inside to the outside. In the duct 111, the direction from the inside to the outside is the direction from the air inlet 112 to the air outlet 114.

The filter screen includes an air inlet filter 32 for filtering air entering the air inlet chamber 121, and the air inlet filter screen 32 is disposed on the rear side of the rear frame body 12. The rear side of the rear frame 12 is the rear of the air inlet direction, and the airflow needs to pass through the air inlet filter 32 before entering the rear frame 12.

An air intake grille 34 is provided on the outer side of the air inlet filter 32. The outside of the inlet air filter 32 is the rear of the air inlet direction, and the air needs to pass through the air inlet grille 34 before being filtered by the air inlet filter 32 before entering the rear frame 12. The air intake grille 34 is detachable for easy cleaning. In other embodiments, the air intake grille may also be made non-removable, and the air intake grille may be replaced by an air inlet grille or an air inlet grille.

The filter screen further includes an air outlet filter 31 for filtering air ejected from the air outlet 114 of the air duct 111, and the air outlet filter 31 is provided in front of the front housing 11. The front side of the front frame body 11 is the front side in the air blowing direction, and the air discharged from the air duct 111 passes through the air passage 111 before being filtered by the air outlet filter 31.

An air outlet grille 33 is also provided on the outer side of the air outlet filter 31. The outside of the air outlet filter 31 is the front side in the air blowing direction, and the air discharged from the air duct 111 passes through the air outlet filter 31 and the air outlet grille 33 in order to reach the outside. The air outlet grille 33 is detachable for easy cleaning. In other embodiments, the air outlet grille may also be made non-detachable, and the air outlet grille may be replaced by a wind deflector or an air outlet grille.

In actual production, in order to reflect different product grade levels, the outlet filter and the inlet filter can be installed in one or both of them.

When the air purifier is in operation, the air enters the air inlet chamber 121 through the air inlet grille 32 and the air inlet filter screen 34, and then enters the air inlet passage 113 of the air duct 111 from the air inlet chamber 121. After being accelerated in the air inlet passage 113, the air enters the centrifugal fan 20 through the air inlet 112 of the air duct 111, and the air from the centrifugal fan 20 gathers in the air duct 111 to form a positive pressure and then from the air outlet 114 of the air duct 111. ejection. The air ejected from the air outlet 114 of the duct 111 passes through the air outlet filter 33 and the air outlet grille 33 in order to reach the outside.

The specific structure of the second embodiment is shown in FIG. The main difference between the second embodiment and the first embodiment is the number of centrifugal fans. In the second embodiment, there are four centrifugal fans 220 and four corresponding air ducts 211. Similarly, the four air ducts 211 are arranged side by side on the same vertical plane, and the central axis of the air duct 211 is perpendicular to the vertical plane. If the second embodiment is the same as the air intake area of the first embodiment, the centrifugal fan and the motor can be made smaller and the noise can be made smaller.

The specific structure of the third embodiment is shown in FIG. The main difference between the third embodiment and the first embodiment is the number of centrifugal fans. In the third embodiment, there are six centrifugal fans 320 and six corresponding air passages 311. Similarly, the six air ducts 311 are arranged side by side on the same vertical plane, and the central axis of the air duct 311 is perpendicular to the vertical plane.

It should be noted that, in the above embodiments, the number of centrifugal fans in the air cleaner is an even number, but in other embodiments of the present invention, the invention is ensured that the number of centrifugal fans is more than one. The number of centrifugal fans is not specifically limited.

In addition, a plurality of centrifugal fans work together to achieve the required working efficiency, and by using different numbers of centrifugal fans and air purifiers of different sizes, the air purifier of the present invention can be applied to different use occasions, such as Car, indoor or public places.

The above description is only to clarify the technical content of the present invention by way of examples, so that the reader can understand the present invention more easily, but the embodiment of the present invention is not limited thereto, and any technology extension or re-creation according to the present invention is subject to the present invention. Protection of the invention.

Claims

The centrifugal fan combined air purifier comprises a frame body and a centrifugal fan and a filter net disposed on the frame body, wherein the centrifugal fan has more than one, the frame body comprises a front frame body, and the front frame body There is a duct for accommodating a centrifugal fan, the air duct is more than one, the air ducts are arranged side by side on the same vertical plane, and the central axis of the air duct is perpendicular to the vertical plane; the air inlet direction of the air duct is The air outlet direction is the same and parallel to the central axis of the air duct, the central axis of the centrifugal fan coincides with the central axis of the air duct; when the air purifier is in operation, the air enters the centrifugal fan through the air inlet of the air duct, The air from the centrifugal fan collects in the air duct to form a positive pressure and then ejects from the air outlet of the air duct.
The centrifugal fan combined air purifier according to claim 1, wherein the frame further comprises a rear frame body, the rear frame body and the front frame body are fixedly connected to each other, and the rear frame body is provided with a corresponding wind. The air inlet chamber of the road; when the air purifier is working, the air enters the air inlet of the air duct through the air inlet chamber.
A centrifugal fan combined air purifier according to claim 2, wherein said filter net comprises an air inlet filter for filtering air entering the air inlet chamber, and said air inlet filter is disposed behind said air filter The back side of the frame.
The centrifugal fan combined air purifier according to claim 3, wherein the outside of the air inlet filter is provided with an air inlet grille, an air inlet grille or an air inlet grille.
The centrifugal fan combined air cleaner according to claim 1, wherein the air inlet of the air duct is provided on the cylindrical air inlet passage.
The centrifugal fan combined air cleaner according to claim 5, wherein the inner wall of the air inlet passage has a concave arc shape in a cross section.
The centrifugal fan combined air cleaner according to claim 1, wherein the cross-sectional shape of the air passage gradually changes from a circular shape to a square shape from the inside to the outside.
A centrifugal fan combined air cleaner according to claim 1, wherein said centrifugal fan is fixed to an intermediate position of the duct by a mounting bracket.
A centrifugal fan combined air purifier according to claim 1, wherein said filter net comprises an air outlet filter for filtering air ejected from an air outlet of the air duct, said air outlet filter screen In front of the front frame.
The centrifugal fan combined air purifier according to claim 9, wherein an outer side of the air outlet filter is further provided with an air outlet grille, an air outlet grille or an air outlet grille.