CN208380931U - A kind of centrifugal blower - Google Patents

Abstract

The utility model relates to a kind of centrifugal blowers, including casing, the casing internal, which is equipped with, passes through motor-driven impeller, the top of the casing is equipped with air outlet, casing is formed with air inducing chamber far from the side-facing depressions of motor, intensive air inlet is distributed in the inner wall of the air inducing chamber, including the blower unit being set at air inducing chamber；The blower unit includes the central block that shape is " cylinder ", the central block is equipped with multiple card slots close to a side end face of motor and central block is formed with inner cavity far from the side sunken end face of motor, the circumferentially equidistant interval of the peripheral side of the central block is fixedly connected with the induced draft plate that multiple cross sections are " sector ", air-vent is formed between adjacent induced draft plate, the one end of each induced draft plate far from central block passes through an air inducing frame and fixes, and the inner wall of the air inducing frame and the air inducing chamber is slidably connected；The central block is additionally provided with guiding device far from the side of motor；The utility model has the beneficial effects that air inducing is high-efficient, effect is good.

Description

A kind of centrifugal blower

Technical field

The utility model relates to blower field, in particular to a kind of centrifugal blower.

Background technique

Centrifugal blower refers to the mechanical energy by input, improves gas pressure and supplies gas side by side the machinery of body, it be it is a kind of from Dynamic fluid machinery；The air pressure that current centrifugal blower mainly passes through motor driven fan blade rotation casing internal reduces, then outer The discharge that the air on boundary is pressed into and is concentrated the air being pressed by the rotation of fan blade, still, this structure is more single One, simply by casing internal fan blade carry out air draught and row wind action, therefore there is sucking air low efficiency and effect it is poor Defect.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of centrifugal blowers, it is intended to solve The problem in above-mentioned background technique.

The technical solution of the utility model is achieved in that a kind of centrifugal blower, including casing, the casing internal are set Have through motor-driven impeller, the top of the casing is equipped with air outlet, it is characterised in that: side-facing depressions of the casing far from motor It is formed with air inducing chamber, intensive air inlet is distributed in the inner wall of the air inducing chamber, including the blower unit being set at air inducing chamber；It is described Blower unit includes the central block that shape is " cylinder ", and the central block is equipped with multiple card slots close to a side end face of motor And central block is formed with inner cavity far from the side sunken end face of motor, the circumferentially equidistant interval of the peripheral side of the central block is fixed to be connected It is connected to the induced draft plate that multiple cross sections are " sector ", is formed with air-vent between adjacent induced draft plate, each induced draft plate is far from center One end of block passes through an air inducing frame and fixes, and the inner wall of the air inducing frame and the air inducing chamber is slidably connected；The central block is remote Side from motor is additionally provided with guiding device；The guiding device includes water conservancy diversion matrix compatible with the inner cavity, described to lead Circumferentially equidistant be spaced of lateral outer wall for flowing matrix is hinged with multiple fixture blocks for card slot clamping, solid between adjacent fixture block Surely it is connected with baffle, each baffle is bonded with each induced draft plate, and a side end face of each baffle far from induced draft plate is from middle part It is recessed to form the guide curve surface of oriented two sides air-vent water conservancy diversion to two sides.

It is preferred that are as follows: a side end face of each induced draft plate far from motor is recessed to motor drive direction and is arranged.

It is preferred that are as follows: the both sides of the face of each induced draft plate are recessed inwardly to form arc surface.

It is preferred that are as follows: the radian interval of the arc surface is 15 °~25 °.

By using above-mentioned technical proposal: the blower unit being arranged at air inducing chamber can be improved extraneous air and enter casing Internal speed, thus to improve the efficiency of sucking air, and the guiding device being arranged on blower unit can be improved air into Enter the effect of casing internal；In more detail: will lead to induced draft plate during the rotation of blower unit and carried out around central block The air in the casing external world is sucked to the inside of casing during central block revolution, is compared only by casing by revolution The impeller in portion carries out air inducing, which can be sucked into casing internal for extraneous air active, thus come improve air into Enter the speed of casing internal；Secondly, induced draft plate is set as concave surface far from a side end face of motor, and the purpose is to: one, it can be improved The contact area of induced draft plate and air, thus during induced draft plate rotation, the further rate for improving sucking air； Two, induced draft plate is being passed through close to motor side by when leading between induced draft plate and air inducing chamber of induced draft plate in air The curved surface of end face is arranged and the rotation of cooperation induced draft plate can accelerate the rate that air enters in casing；Again, induced draft plate Both sides of the face be recessed inwardly to form arc surface, which can expand air-vent, thus come further improve air into Enter to the rate of shell；And during induced draft plate rotation, when extraneous air is attracted to the intracavitary portion of air inducing, air can be hit It hits to the baffle being bonded with induced draft plate, after baffle is hit, the air of the part shunt and by leading Air smoothly and effectively is gone out to drain by the guide curve surface flowed on block to the air-vent of baffle two sides, thus empty to improve sucking The effect of gas；It should be understood that in process of production, the air being if desired discharged can be dismantled in very high situation Lower guiding device thus to improve the revolving speed of blower unit, not only can be reduced energy consumption but also can thus to reduce the weight bearing of blower unit To guarantee to enter the wind rate；When air is if desired largely discharged, guiding device can be connected on blower unit by fixture block, To further to guarantee to produce needs, and then to improve the practicability of centrifugal blower.

The utility model is further arranged to: spaced radial is equipped with plurality of guiding gutter in the guide curve surface.

By using above-mentioned technical proposal: each diversion trench can be by the air Jing Guo guide curve surface further to baffle The air-vent of two sides is introduced to that air inducing is intracavitary, then is guided by the air inlet of the intracavitary setting of air inducing to casing internal, thus come into The effect of the raising sucking air of one step.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is specific embodiment of the present invention structural schematic diagram；

Fig. 2 is the portion the A enlarged drawing in Fig. 1；

Fig. 3 is B in Fig. 1 to schematic diagram.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.

As shown in FIG. 1 to 3, it the utility model discloses a kind of centrifugal blower, including casing 1, is set inside the casing 1 There is the impeller 3 driven by motor 2, the top of the casing 1 is equipped with air outlet 11, in the utility model specific embodiment, machine Shell 1 is formed with air inducing chamber 4 far from the side-facing depressions of motor 2, and intensive air inlet 41 is distributed in the inner wall of the air inducing chamber 4, including Blower unit 5 at air inducing chamber 4；The blower unit 5 includes the central block 51 that shape is " cylinder ", the central block 51 are equipped with multiple card slots 511 and central block 51 close to a side end face of motor 2 is formed with far from the side sunken end face of motor Inner cavity 512, the circumferentially equidistant interval of the peripheral side of the central block 51 are fixedly connected with the induced draft plate that multiple cross sections are " sector " 52, air-vent 521 is formed between adjacent induced draft plate 52, and each one end of induced draft plate 52 far from central block 51 passes through an air inducing Frame 53 is fixed, and the inner wall of the air inducing frame 53 and the air inducing chamber 4 is slidably connected；The side of the central block 51 far from motor is also Equipped with guiding device 6；The guiding device 6 includes water conservancy diversion matrix 61 compatible with the inner cavity 512, the water conservancy diversion matrix 61 The circumferentially equidistant interval of lateral outer wall be hinged with it is multiple for and the fixture blocks 611 that are clamped of card slot 511, between adjacent fixture block 611 It is fixedly connected to baffle 62, each baffle 62 is bonded with each induced draft plate 52, and each baffle 62 is far from induced draft plate 52 One side end face is recessed to form the guide curve surface 621 of oriented 521 water conservancy diversion of two sides air-vent from middle part to two sides.

In the utility model specific embodiment, a side end face of each induced draft plate 52 far from motor 2 is recessed to 1 direction of motor Fall into setting.

In the utility model specific embodiment, the both sides of the face of each induced draft plate 52 are recessed inwardly to form arc surface 522.

In the utility model specific embodiment, the radian of the arc surface 522 can be 20 °.

In the utility model specific embodiment, the central block 51 can connect by the way that transmission shaft 7 and the impeller 3 are fixed It connects.

In the utility model specific embodiment, the circumferentially equidistant interval of the lateral outer wall of water conservancy diversion matrix 61 is hinged with multiple use In the fixture block 611 being clamped with card slot 511, the articulated manner can be carried out hinged by torsional spring.

By using above-mentioned technical proposal: the blower unit being arranged at air inducing chamber can be improved extraneous air and enter casing Internal speed, thus to improve the efficiency of sucking air, and the guiding device being arranged on blower unit can be improved air into Enter the effect of casing internal；In more detail: will lead to induced draft plate during the rotation of blower unit and carried out around central block The air in the casing external world is sucked to the inside of casing during central block revolution, is compared only by casing by revolution The impeller in portion carries out air inducing, which can be sucked into casing internal for extraneous air active, thus come improve air into Enter the speed of casing internal；Secondly, induced draft plate is set as concave surface far from a side end face of motor, and the purpose is to: one, it can be improved The contact area of induced draft plate and air, thus during induced draft plate rotation, the further rate for improving sucking air； Two, induced draft plate is being passed through close to motor side by when leading between induced draft plate and air inducing chamber of induced draft plate in air The curved surface of end face is arranged and the rotation of cooperation induced draft plate can accelerate the rate that air enters in casing；Again, induced draft plate Both sides of the face be recessed inwardly to form arc surface, which can expand air-vent, thus come further improve air into Enter to the rate of shell；And during induced draft plate rotation, when extraneous air is attracted to the intracavitary portion of air inducing, air can be hit It hits to the baffle being bonded with induced draft plate, after baffle is hit, the air of the part shunt and by leading Air smoothly and effectively is gone out to drain by the guide curve surface flowed on block to the air-vent of baffle two sides, thus empty to improve sucking The effect of gas；It should be understood that in process of production, the air being if desired discharged can be dismantled in very high situation Lower guiding device thus to improve the revolving speed of blower unit, not only can be reduced energy consumption but also can thus to reduce the weight bearing of blower unit To guarantee to enter the wind rate；When air is if desired largely discharged, guiding device can be connected on blower unit by fixture block, To further to guarantee to produce needs, and then to improve the practicability of centrifugal blower.

In the utility model specific embodiment, spaced radial is equipped with plurality of guiding gutter 621a in the guide curve surface 621.

By using above-mentioned technical proposal: each diversion trench can be by the air Jing Guo guide curve surface further to baffle The air-vent of two sides is introduced to that air inducing is intracavitary, then is guided by the air inlet of the intracavitary setting of air inducing to casing internal, thus come into The effect of the raising sucking air of one step.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (5)

1. a kind of centrifugal blower, including casing, the casing internal, which is equipped with, passes through motor-driven impeller, set at the top of the casing There is air outlet, it is characterised in that: casing is formed with air inducing chamber far from the side-facing depressions of motor, and the inner wall of the air inducing chamber is distributed with close The air inlet of collection, including the blower unit being set at air inducing chamber；The blower unit includes the central block that shape is " cylinder ", The central block is equipped with multiple card slots close to a side end face of motor and central block is formed far from the side sunken end face of motor There is inner cavity, the circumferentially equidistant interval of the peripheral side of the central block is fixedly connected with the induced draft plate that multiple cross sections are " sector ", phase It is formed with air-vent between adjacent induced draft plate, the one end of each induced draft plate far from central block passes through an air inducing frame and fixes, and this draws Wind frame and the inner wall of the air inducing chamber are slidably connected；The central block is additionally provided with guiding device far from the side of motor；It is described to lead Stream device includes water conservancy diversion matrix compatible with the inner cavity, and the circumferentially equidistant interval of the lateral outer wall of the water conservancy diversion matrix is hinged with It is multiple for and card slot clamping fixture blocks, be fixedly connected to baffle between adjacent fixture block, each baffle with each air inducing Plate fitting, and a side end face of each baffle far from induced draft plate is recessed to form oriented two sides air-vent water conservancy diversion from middle part to two sides Guide curve surface.

2. a kind of centrifugal blower according to claim 1, it is characterised in that: a side end face of each induced draft plate far from motor is equal It is recessed to motor drive direction and is arranged.

3. a kind of centrifugal blower according to claim 1 or 2, it is characterised in that: the both sides of the face of each induced draft plate are inside Recess forms arc surface.

4. a kind of centrifugal blower according to claim 3, it is characterised in that: the radian interval of the arc surface be 15 °~ 25°。

5. a kind of centrifugal blower according to claim 1, it is characterised in that: spaced radial is equipped with more in the guide curve surface Diversion trench.