CN216111362U

CN216111362U - Volute type energy-saving fan

Info

Publication number: CN216111362U
Application number: CN202121460227.6U
Authority: CN
Inventors: 闫广志
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-03-22
Anticipated expiration: 2031-06-29

Abstract

The utility model provides a volute type energy-saving fan and relates to the field of fans. Comprises a shell assembly, a volute communicated with the shell assembly and a driving device; an impeller in transmission connection with the driving device is arranged in the shell assembly; the shell assembly is provided with an air outlet, the volute is provided with an air inlet, and a spiral flow guide channel is arranged inside the volute. The volute casing has the advantages that flowing air can be introduced into the air inlet of the volute casing, the flowing air forms vortex through the volute casing and the casing assembly, the direction of the vortex is consistent with the rotating direction of the impeller, the impeller cannot be blocked from rotating, energy consumption is greatly reduced, meanwhile, the rotating direction of the air sucked by the volute casing air suction flow guide mechanism is consistent with the rotating direction of the impeller, noise caused by impact of the air and the impeller is reduced, the effect of reducing the noise is facilitated, and the working environment is greatly improved.

Description

Volute type energy-saving fan

Technical Field

The utility model relates to the field of fans, in particular to a wind volute type energy-saving fan.

Background

The fan is widely used for ventilation and draught of boilers and industrial furnaces, the working principle of the fan is basically the same as that of a turbine compressor, and the fan treats gas as incompressible fluid only because the gas has low flow rate and small pressure change and does not generally consider the change of the specific volume of the gas. The fan is usually provided with an air inlet pipe, however, the air inlet pipe in the prior art is usually a straight pipe, and the flowing air enters the air inlet pipe and then flows in a relatively disordered manner, so that the air may block the rotation of the impeller inside the fan, and the energy consumption is serious.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a volute energy-saving fan which can guide flowing air, so that the air flow direction is consistent with the rotation direction of an impeller, and the energy consumption is greatly reduced.

The embodiment of the utility model is realized by the following steps:

the embodiment of the application provides a volute type energy-saving fan which comprises a shell assembly, a volute communicated with the shell assembly and a driving device; an impeller in transmission connection with the driving device is arranged in the shell assembly; the shell assembly is provided with an air outlet, the volute is provided with an air inlet, and a spiral flow guide channel is arranged inside the volute.

In some embodiments of the present invention, the housing assembly includes a main housing and an air inlet duct, one end of the air inlet duct is communicated with the main housing, and the other end of the air inlet duct is communicated with the volute.

In some embodiments of the present invention, the number of the air inlet duct and the scroll casing is plural.

In some embodiments of the present invention, the outer sidewall of the main housing is provided with a plurality of first mounting seats.

In some embodiments of the present invention, the main housing and the volute are removably connected to the air inlet duct.

In some embodiments of the present invention, the above-mentioned further includes a support seat; the impeller is provided with a connecting shaft, one end of the connecting shaft penetrates through the main shell and is connected with the driving device, and the other end of the connecting shaft penetrates through the main shell and is rotatably connected with the supporting seat.

In some embodiments of the present invention, the driving device includes a coupler and a motor, one end of the coupler is connected to the connecting shaft, and the other end of the coupler is connected to a rotating shaft of the motor.

In some embodiments of the present invention, a protective cover is sleeved outside the coupling.

In some embodiments of the present invention, the above further comprises a plurality of baffles located inside the volute; the guide vane is circumferentially arranged on the volute and is hinged with the volute.

In some embodiments of the present invention, the volute is provided with a second mounting seat, and the second mounting seat is provided at the air inlet.

Compared with the prior art, the embodiment of the utility model has at least the following advantages or beneficial effects:

the air inlet of the volute can be filled with flowing air, the flowing air forms vortex through the volute and the flow guide of the shell assembly, the flow direction of the vortex is consistent with the rotation direction of the impeller, the impeller cannot be blocked from rotating, and the energy consumption is greatly reduced. Meanwhile, because the rotating direction of air sucked by the volute air suction flow guide mechanism is consistent with the rotating direction of the impeller, the noise caused by impact of the air and the impeller is reduced, the effect of reducing noise emission is facilitated, and the working environment is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a volute energy-saving fan according to an embodiment of the present invention;

FIG. 2 is a schematic view of a volute according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a volute of an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a main housing according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an impeller according to an embodiment of the present invention.

Icon: 1-a volute; 2-an impeller; 3, air outlet; 4-air inlet; 5-a flow guide channel; 6-a main housing; 7-an air inlet pipeline; 8-a first mount; 9-a support seat; 10-a connecting shaft; 11-a coupling; 12-a motor; 13-a protective cover; 14-flow deflectors; 15-a vortex channel; 16-second mount.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when using, the terms are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" represents at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1

Referring to fig. 1 to 5, the present embodiment provides a volute energy saving fan, which includes a housing assembly, a volute 1 communicated with the housing assembly, and a driving device; an impeller 2 in transmission connection with a driving device is arranged in the shell component; the shell assembly is provided with an air outlet 3, the volute 1 is provided with an air inlet 4, and a spiral flow guide channel 5 is arranged inside the volute 1.

In this embodiment, drive arrangement starts and drives 2 rotations of impeller, 2 circumference of impeller are equipped with the multi-disc flabellum, arbitrary flabellum is the arc, it is the B face to establish the arc concave surface, the arc convex surface is the A face, get into the final flow direction casing subassembly of spiral case 1 from air intake 4 when the air that flows, the air forms the vortex after 5 circulations of water conservancy diversion passageway, and the direction of vortex is unanimous with 2 the turning to of impeller, the vortex finally can blow to the B face promptly, at this moment, the air current not only can not obstruct 2 rotations of impeller, but also has played the boosting effect to impeller 2, greatly reduced the load of fan.

If the vortex gas impinges on the surface a of the fan blades, the direction of the vortex is exactly opposite to the direction of rotation of the impeller 2, resulting in increased resistance of the impeller 2, increased load, and severe over-flow of the motor 12.

Example 2

Referring to fig. 1, the present embodiment provides a volute energy-saving fan, which has a structure substantially the same as that of embodiment 1, except that:

in this embodiment, the housing assembly includes a main housing 6 and an air inlet duct 7, one end of the air inlet duct 7 communicates with the main housing 6, and the other end of the air inlet duct 7 communicates with the scroll 1.

In detail, the side wall of the volute 1 and the side wall of the main casing 6 are both provided with openings, and the volute 1 is not directly connected with the main casing 6, because the axial distance between the volute 1 and the main casing 6 is relatively short, if the volute 1 is directly connected with the main casing 6, after the airflow flows out through the flow guide channel 5, the airflow is not easy to form vortex, the airflow direction is uncertain, and the flow guide effect of the volute 1 is poor. And the air inlet pipeline 7 increases the axial distance between the volute 1 and the main shell 6, increases the circulation path of the air flow and is easier to form vortex.

Example 3

Referring to fig. 1, the present embodiment provides a volute type energy saving fan, and the present embodiment provides a volute type 1 fan, which has substantially the same structure as that of embodiment 1, except that:

in the present embodiment, the number of the air inlet duct 7 and the scroll casing 1 is plural.

In detail, the number of the main casing 6, the air inlet duct 7 and the volute 1 in embodiment 2 is 1, while the number of the main casing 6 in this embodiment may be 1, and the number of the air inlet duct 7 and the volute 1 is 2. The quantity that increases air-supply line and spiral case 1 can increase the intake, and two spiral cases 1 are located the left and right sides of main casing body 6 respectively, and when the air current formed the vortex through spiral case 1 and pipeline, the left and right sides vortex acted on impeller 2 simultaneously, has further increased the boosting effect of vortex to impeller 2, and is better when energy-conserving effect is compared and only has 1

intake stack

7 and 1 spiral case 1.

Example 4

Referring to fig. 1 and fig. 4, the present embodiment provides a volute energy-saving fan, which has a structure substantially the same as that of embodiment 3, except that:

in this embodiment, the outer side wall of the main housing 6 is provided with a plurality of first mounting seats 8.

In detail, since the main housing 6 is bulky and heavy, and the outer sidewall of the volute 1 is generally not provided with a mounting seat, the outer sidewall of the main housing 6 needs to be provided with a first mounting seat 8 for mounting and supporting the whole blower. An operator can build the cement upright post on the ground, and then fix the first mounting seat 8 on the cement upright post, so as to complete the installation of the fan. The number of the first mounting seats 8 may be two, respectively located at the front and rear sides of the main housing 6.

Example 5

Referring to fig. 1, the present embodiment provides a volute energy-saving fan, which has substantially the same structure as embodiment 3, except that:

in this embodiment, the main housing 6 and the volute 1 are both detachably connected to the air inlet duct 7.

In detail, when the fan is installed, the main shell 6 needs to be connected with an external exhaust pipe, the volute 1 needs to be connected with an external air inlet pipe, in order to ensure that the fan is convenient to install, the connection mode of the main shell 6, the volute 1 and the air inlet pipe 7 is designed into a detachable connection mode, namely, mounting flanges are arranged at the two ends of the side wall of the main shell 6, the side wall of the volute 1 and the two ends of the air inlet pipe 7, and bolts penetrate through the mounting flanges and then are connected with nuts to achieve detachable connection.

Example 6

Referring to fig. 1, the present embodiment provides a volute energy-saving fan, which has a structure substantially the same as that of embodiment 5, except that:

in this embodiment, the device further comprises a support seat 9; the impeller 2 is provided with a connecting shaft 10, one end of the connecting shaft 10 penetrates through the main shell 6 and is connected with a driving device, and the other end of the connecting shaft 10 penetrates through the main shell 6 and is rotatably connected with the supporting seat 9.

In detail, the support base 9 is mainly used for supporting the impeller 2. After extending out of the side wall opening of the main housing 6, the connecting shaft 10 needs to pass through the air inlet duct 7 and the volute 1 and then be connected with a driving device or a supporting seat 9. The bearing can be sleeved outside the connecting shaft 10, so that when the impeller 2 drives the connecting shaft 10 to rotate, the connecting shaft 10 cannot rub against the supporting seat 9, and the connecting shaft 10 and the supporting seat 9 are seriously abraded.

Example 7

in this embodiment, the driving device includes a coupling 11 and a motor 12, one end of the coupling 11 is connected to the connecting shaft 10, and the other end of the coupling 11 is connected to a rotating shaft of the motor 12.

In detail, since the length of the connecting shaft 10 is not too long, the connecting shaft 10 is prone to be broken when the rotating speed is faster and the vibration is more frequent when the length of the connecting shaft 10 is longer. The coupling 11 can extend the length of the connecting shaft 10 and can also connect the connecting shaft 10 with the rotating shaft of the motor 12, so that the operation is convenient.

In order to increase the torque of the impeller 2, a reduction gearbox can be arranged between the connecting shaft 10 and the rotating shaft of the motor 12, and the two shafts of the reduction gearbox are respectively connected with the connecting shaft 10 and the rotating shaft of the motor 12 through a coupler 11.

Example 8

Referring to fig. 1, the present embodiment provides a volute energy-saving fan, which has a structure substantially the same as that of embodiment 7, except that:

in this embodiment, a protective cover 13 is sleeved outside the coupler 11.

In detail, when the fan is installed, the main housing 6, the air inlet duct 7, the volute 1 and the motor 12 are fixed, and then the connecting shaft 10 and the rotating shaft of the motor 12 are connected by the coupler 11. If the coupling 11 is installed on the connecting shaft 10 first, and then the motor 12 is installed, because the motor 12 is heavy in weight, the position of the rotating shaft of the motor 12 is adjusted by moving the motor 12, and then the rotating shaft of the motor 12 is connected with the coupling 11, the operation is very complicated, and the concentricity between the connecting shaft 10 and the rotating shaft of the motor 12 is poor easily.

Example 9

Referring to fig. 2 and fig. 3, the present embodiment provides a volute energy-saving fan, which has a structure substantially the same as that of embodiment 3, except that:

in the present embodiment, a plurality of baffles 14 are further included inside the volute 1; the guide vane 14 is circumferentially arranged on the volute 1, and the guide vane 14 is hinged with the volute 1.

In detail, one end of each guide vane 14 is close to an opening on the side wall of the volute 1, the other end of each guide vane 14 extends into the guide channel 5, a vortex channel 15 is formed between every two adjacent guide vanes 14, airflow enters the volute 1 from the air inlet 4 and then enters the vortex channel 15 from the guide channel 5, and the vortex channels 15 are large in number and circumferentially located inside the volute 1, so that the airflow can form rotary airflow before entering the air inlet pipeline 7.

Example 10

Referring to fig. 1 and fig. 2, the present embodiment provides a volute energy-saving fan, which has a structure substantially the same as that of embodiment 3, except that:

in the present embodiment, the volute casing 1 is provided with a second mounting seat 16, and the second mounting seat 16 is provided at the air inlet 4.

In detail, because the volute casing 1 is provided with the flow guide channel 5, the volute casing 1 is thin in thickness, so that the volute casing 1 is convenient to be connected with an external air inlet pipe, the second mounting seat 16 is arranged at the position of the air inlet 4 of the volute casing 1, a plurality of mounting holes are formed in the second mounting seat 16 in the circumferential direction, the end portion of the external air inlet pipe is generally provided with a mounting flange, and bolts penetrate through the mounting holes of the second mounting seat 16 and the mounting flange and are connected with nuts, so that the communication between the volute casing 1 and the air inlet pipe can be completed.

In summary, the embodiment of the present invention provides a volute energy-saving fan:

comprises a shell assembly, a volute 1 communicated with the shell assembly and a driving device; an impeller 2 in transmission connection with a driving device is arranged in the shell component; the shell assembly is provided with an air outlet 3, the volute 1 is provided with an air inlet 4, and a spiral flow guide channel 5 is arranged inside the volute 1.

The air inlet 4 of the volute 1 can be filled with flowing air, the flowing air forms vortex through the volute 1 and the flow guide of the shell assembly, the flow direction of the vortex is consistent with the rotation direction of the impeller 2, the impeller 2 cannot be blocked from rotating, and the energy consumption is greatly reduced. Meanwhile, because the rotating direction of the air sucked by the air suction flow guide mechanism of the volute 1 is consistent with the rotating direction of the impeller 2, the noise generated by the impact of the air and the impeller 2 is reduced, the effect of reducing the noise is facilitated, and the working environment is greatly improved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A volute type energy-saving fan is characterized by comprising a shell assembly, a volute communicated with the shell assembly and a driving device; an impeller in transmission connection with the driving device is arranged in the shell assembly; the casing assembly is provided with an air outlet, the volute is provided with an air inlet, and a spiral flow guide channel is arranged inside the volute.

2. The volute energy saving fan of claim 1, wherein the housing assembly comprises a main housing and an air inlet duct, one end of the air inlet duct is communicated with the main housing, and the other end of the air inlet duct is communicated with the volute.

3. The volute energy-saving fan of claim 2, wherein the number of the air inlet pipeline and the number of the volutes are both multiple.

4. The volute energy saving fan of claim 2, wherein the outer sidewall of the main housing is provided with a plurality of first mounting seats.

5. The spiral case energy saving fan as claimed in claim 2, wherein the main housing and the spiral case are detachably connected to the air inlet duct.

6. The spiral case energy saving fan of claim 2 further comprising a support base; the impeller is provided with a connecting shaft, one end of the connecting shaft penetrates through the main shell and is connected with the driving device, and the other end of the connecting shaft penetrates through the main shell and is rotatably connected with the supporting seat.

7. The volute energy-saving fan as claimed in claim 6, wherein the driving device comprises a coupling and a motor, one end of the coupling is connected with the connecting shaft, and the other end of the coupling is connected with a rotating shaft of the motor.

8. The volute energy-saving fan as claimed in claim 7, wherein a protective cover is sleeved outside the coupling.

9. The volute energy saving fan of claim 1, further comprising a plurality of baffles positioned inside the volute; the flow deflector is circumferentially arranged on the volute, and the flow deflector is hinged with the volute.

10. The volute energy-saving fan as claimed in claim 1, wherein the volute is provided with a second mounting seat, and the second mounting seat is provided at the air inlet.