CN108019363B - Fan device and smoke machine - Google Patents

Fan device and smoke machine Download PDF

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Publication number
CN108019363B
CN108019363B CN201810026984.9A CN201810026984A CN108019363B CN 108019363 B CN108019363 B CN 108019363B CN 201810026984 A CN201810026984 A CN 201810026984A CN 108019363 B CN108019363 B CN 108019363B
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CN
China
Prior art keywords
airflow
hub
centrifugal
outlet
inlet
Prior art date
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Active
Application number
CN201810026984.9A
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Chinese (zh)
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CN108019363A (en
Inventor
刘伟龙
陈昊
蒋济武
季俊生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Original Assignee
Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
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Priority to CN201810026984.9A priority Critical patent/CN108019363B/en
Publication of CN108019363A publication Critical patent/CN108019363A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a fan device and a smoke ventilator. The fan device comprises a wind wheel and a shell, wherein the wind wheel is arranged in the shell, the wind wheel comprises a hub, a wheel disc and a plurality of blades, the wheel disc surrounds the hub and is arranged at intervals with the hub, an airflow inlet is formed at the bottom of the wheel disc, an airflow outlet is formed at the top of the wheel disc, the blades are connected between the wheel disc and the hub at intervals along the circumferential direction of the hub, an air flue is formed between two adjacent blades, the air flue comprises a centrifugal section and a rectifying section connected with the centrifugal section, the centrifugal section is communicated with the airflow inlet, the centrifugal section is configured to centrifugally accelerate airflow entering from the airflow inlet, and the rectifying section is communicated with the airflow outlet and is configured to change the flowing direction of airflow flowing out of the centrifugal section to be consistent with the flowing direction when the airflow enters the airflow inlet. According to the fan device, after the airflow is accelerated through the airflow inlet to the centrifugal section, the direction of the airflow flowing into the wind wheel is consistent with the direction of the airflow flowing out of the wind wheel, so that the airflow is effectively prevented from vertically striking the side wall of the shell after being accelerated through the wind wheel, and noise is reduced.

Description

Fan device and smoke machine
Technical Field
The invention relates to the technical field of smoke machines, in particular to a fan device and a smoke machine.
Background
In the smoke machine of the related art, a general wind wheel of a pipeline fan adopts a backward centrifugal wind wheel. Because the gas is accelerated by the wind wheel and then vertically impacts the side wall of the shell of the fan, the gas is forced to flow along the pipeline by the extrusion of the gas, and finally the gas is discharged out of the outlet of the fan, however, the exhaust mode can cause two problems: high energy consumption and high noise. Specifically, achieving a larger air volume must be achieved by increasing the rotational speed, resulting in high energy consumption; the user experience is affected by the problem that direct impingement of the gas on the housing side walls will create significant additional noise.
Disclosure of Invention
The embodiment of the invention provides a fan device and a smoke machine.
The fan device comprises a wind wheel and a shell, wherein the wind wheel is arranged in the shell, the wind wheel comprises a hub, a wheel disc and a plurality of blades, the wheel disc surrounds the hub and is arranged at intervals with the hub, an airflow inlet is formed at the bottom of the wheel disc, an airflow outlet is formed at the top of the wheel disc, the blades are connected between the wheel disc and the hub at intervals along the circumferential direction of the hub, an air channel is formed between two adjacent blades, the air channel comprises a centrifugal section and a rectifying section connected with the centrifugal section, the centrifugal section is communicated with the airflow inlet, the centrifugal section is configured to centrifugally accelerate airflow entering from the airflow inlet, and the rectifying section is communicated with the airflow outlet and is configured to change the flowing direction of airflow flowing out of the centrifugal section to be consistent with the flowing direction of the airflow entering the airflow inlet.
According to the fan device provided by the embodiment of the invention, after the airflow is accelerated through the airflow inlet to the centrifugal section, the airflow flows out of the airflow outlet after the flow direction of the rectifying section is changed to be consistent with the flow direction of the airflow flowing into the airflow inlet, so that the directions of the airflow flowing into the wind wheel and the airflow flowing out of the wind wheel are consistent, the airflow at the lower part of the wind wheel can enter the wind wheel from the airflow inlet and then flow out of the airflow outlet at the upper part of the wind wheel, the airflow is effectively prevented from vertically striking the side wall of the shell after being accelerated through the wind wheel, noise is further reduced, and user experience is improved. Moreover, the centrifugal section can accelerate the airflow, so that the energy consumption of the fan device can be reduced.
In some embodiments, the hub is conical, and the cross-sectional diameter of the hub increases gradually from the air flow inlet to the air flow outlet.
In certain embodiments, the blade and the hub are of unitary construction.
In some embodiments, the blade includes a centrifugal plate and a rectifying plate connected to the centrifugal plate in a sliding manner, the centrifugal plates are inclined along the same circumferential direction of the hub, the centrifugal section is formed between two adjacent centrifugal plates, and the rectifying section is formed between two adjacent rectifying plates.
In some embodiments, the centrifugal plate is parallel to the central axis of the hub, and the bottom of the rectifying plate is bent in a direction opposite to the direction in which the centrifugal plate is inclined so that the flow direction of the air flow flowing out of the centrifugal section is turned by the rectifying plate and the wheel disc to coincide with the flow direction of the air flow flowing into the air flow inlet.
In certain embodiments, the top of the blade is higher than the top of the disk.
In certain embodiments, the diameter of the airflow outlet is greater than the diameter of the airflow inlet.
In some embodiments, the housing is provided with an air inlet and an air outlet, the air inlet is communicated with the air inlet, and the air outlet is communicated with the air outlet.
In some embodiments, the fan device includes a plurality of directional blades disposed above the wind wheel and disposed in the housing, and a directional channel is formed between two adjacent directional blades, and the directional channel communicates the airflow outlet and the air outlet.
In certain embodiments, the housing comprises an upper shell and a lower shell, the upper shell being detachably connected to the lower shell, the wind wheel being disposed within the upper shell, the orientation vane being disposed within the lower shell.
In some embodiments, the area of the air inlet is S1, the area of the air inlet is S3, the area of the air outlet is S5, the sum of the cross-sectional areas of the inlets of the plurality of directional channels is S6, the sum of the cross-sectional areas of the outlets of the plurality of directional channels is S7, the area of the air outlet is S8, and S1 is greater than or equal to S3 is greater than or equal to S5, S5 is greater than or equal to S6 is greater than or equal to S7 is less than or equal to S8.
In some embodiments, the fan assembly includes a motor located within the housing, the motor being coupled to the hub and configured to drive the rotor.
The smoke machine comprises a smoke machine body and the fan device of any one of the above embodiments, wherein the top of the smoke machine body is provided with a smoke outlet, and the fan device is arranged at the smoke outlet.
According to the smoke machine provided by the embodiment of the invention, after the airflow is accelerated through the airflow inlet to the centrifugal section, the airflow flows out of the airflow outlet after the flow direction of the rectifying section is changed to be consistent with the flow direction of the airflow flowing into the airflow inlet, so that the directions of the airflow flowing into the wind wheel and the airflow flowing out of the wind wheel are consistent, the airflow at the lower part of the wind wheel can enter the wind wheel from the airflow inlet and then flow out of the airflow outlet at the upper part of the wind wheel, the airflow is effectively prevented from vertically striking the side wall of the shell after being accelerated through the wind wheel, noise is further reduced, and user experience is improved. Moreover, the centrifugal section can accelerate the airflow, so that the energy consumption of the fan device can be reduced.
Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention.
Drawings
The foregoing and/or additional aspects and advantages of embodiments of the invention will become apparent and may be better understood from the description of embodiments with reference to the following drawings, in which:
fig. 1 is a schematic perspective cross-sectional view of a fan device according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a fan apparatus according to an embodiment of the present invention.
Fig. 3 is an exploded perspective view of a fan device according to an embodiment of the present invention.
Fig. 4 is a schematic view of a part of a wind wheel of a fan device according to an embodiment of the present invention.
Fig. 5 is a schematic perspective view of a blade of a fan device according to an embodiment of the present invention.
Fig. 6 is a schematic cross-sectional view of a wind wheel of a fan apparatus according to an embodiment of the present invention.
Fig. 7 is a top view of a rotor of a fan apparatus according to an embodiment of the present invention.
Fig. 8 is a schematic perspective view of a wind wheel of a fan device according to an embodiment of the present invention.
Fig. 9 is a schematic perspective view of a part of a wind wheel of a fan device according to an embodiment of the present invention.
Fig. 10 is a bottom view of a part of the structure of a wind wheel of a fan device according to an embodiment of the present invention.
Fig. 11 is a schematic perspective view of a smoke machine according to an embodiment of the present invention.
Fig. 12 is a schematic perspective cross-sectional view of a smoke machine according to an embodiment of the present invention.
Description of main reference numerals:
the smoke machine 100, the fan device 10, the wind wheel 12, the hub 122, the wheel disc 124, the airflow inlet 1242, the airflow outlet 1244, the blades 126, the centrifugal plate 1262, the rectifying plate 1264, the air duct 128, the centrifugal section 1282, the rectifying section 1284, the shell 14, the air inlet 142, the air outlet 144, the upper shell 146, the lower shell 148, the directional blade 16, the directional channel 162, the motor 18, the smoke machine body 20 and the smoke outlet 22.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
Referring to fig. 1-4, in an embodiment of a fan apparatus 10 for a smoke machine 100, the fan apparatus 10 includes a wind wheel 12 and a housing 14, the wind wheel 12 is disposed in the housing 14, the wind wheel 12 includes a hub 122, a wheel disc 124 and a plurality of blades 126, the wheel disc 124 surrounds the hub 122 and is spaced apart from the hub 122, an airflow inlet 1242 is formed at a bottom of the wheel disc 124, an airflow outlet 1244 is formed at a top of the wheel disc 124, the plurality of blades 126 are connected between the wheel disc 124 and the hub 122 at intervals along a circumferential direction of the hub 122, an air duct 128 is formed between two adjacent blades 126, the air duct 128 includes a centrifugal section 1282 and a rectifying section 1284 connected with the centrifugal section 1282, the centrifugal section 1282 is connected with the airflow inlet 1242, the centrifugal section 1282 is configured to centrifugally accelerate an airflow entering from the airflow inlet 1242, and the rectifying section 1284 is connected with the airflow outlet 1244 and is configured to change a flow direction of the airflow flowing from the centrifugal section 1282 to coincide with a flow direction when the airflow enters the airflow inlet 1242.
In the fan device 10 of the embodiment of the invention, after the airflow is accelerated by the airflow inlet 1242 to the centrifugal section 1282, the airflow flows out of the airflow outlet 1244 after the flow direction of the rectifying section 1284 is changed to be consistent with the flow direction when the airflow flows into the airflow inlet 1242, so that the airflow flows into the wind wheel 12 and flows out of the wind wheel 12 in the same direction, the airflow at the lower part of the wind wheel 12 can enter the wind wheel 12 from the airflow inlet 1242 and then flows out of the airflow outlet 1244 at the upper part of the wind wheel 12, the airflow is effectively prevented from vertically striking the side wall of the shell 14 after being accelerated by the wind wheel 12, the noise is further reduced, and the user experience is improved. Moreover, the centrifugal section 1282 may be able to accelerate the airflow, which may reduce the energy consumption of the fan apparatus 10.
The fan apparatus 10 of the present embodiment may be installed in a flue in a kitchen.
Specifically, when the fan apparatus 10 operates, the wind wheel 12 rotates, air flows from below the wind wheel 12 into the wind wheel 12 from the air inlet 1242, the air flow entering the wind wheel 12 enters the air duct 128 under the action of the hub 122, centrifugal acceleration is performed at the centrifugal section 1282 to form negative pressure suction smoke, the speed of the air flow horizontal direction after centrifugal acceleration is changed, the air flow flowing out of the centrifugal section 1282 flows to the rectifying section 1284, the flowing direction of the air flow is changed into upward flowing under the action of the rectifying section 1284 and the wheel disc 124, and then the air flow flows out of the air flow outlet 1244.
Further, the cross-sectional radius of the disk 124 increases gradually from the airflow inlet 1242 to the airflow outlet 1244. In this manner, the disk 124 is disposed diagonally upward with respect to the blades 126 to prevent the airflow exiting the centrifugal segment 1282 from perpendicularly striking the disk 124, reducing noise and drag, and smoothing the airflow exiting the centrifugal segment 1282 into the rectifying segment 1284.
Preferably, the number of blades 126 is 12 or more and 20 or less. Thus, the air outlet effect of the fan apparatus 10 is good.
In certain embodiments, hub 122 is conical, and the cross-sectional radius of hub 122 increases gradually from airflow inlet 1242 to airflow outlet 1244.
In this manner, the air flow entering the disk 124 is gradually dispersed into a plurality of sub-air flows that enter the different air flow inlets 1242, respectively.
Specifically, after the entire air flow enters the wheel disc 124, since the cross-sectional radius of the hub 122 gradually increases from the air flow inlet 1242 to the air flow outlet 1244, the space between the hub 122 and the wheel disc 124 is gradually dispersed, so that the air flow is gradually dispersed, which helps to reduce the resistance and the air flow loss, and thus the air volume of the fan apparatus 10 is increased.
In certain embodiments, the blades 126 and hub 122 are of unitary construction.
Thus, the production and the manufacture are convenient, and the production efficiency is improved.
In the embodiment of the invention, the blade 126 and the hub 122 are integrally injection molded, and the disk 124 and the blade 126 are welded by ultrasonic waves. Of course, in other embodiments, the rotor 12 may be manufactured using other manufacturing methods.
Referring to fig. 4-10, in some embodiments, the vane 126 includes a centrifugal plate 1262 and a rectifying plate 1264 smoothly connected to the centrifugal plate 1262, wherein the centrifugal plates 1262 are inclined along the same circumferential direction of the hub 122, a centrifugal section 1282 is formed between two adjacent centrifugal plates 1262, and a rectifying section 1284 is formed between two adjacent rectifying plates 1264.
In this way, the airflow is better centrifugally accelerated within the centrifugal section 1282.
Specifically, the plurality of centrifugal plates 1262 may be inclined counterclockwise in the axial direction of the hub 122, or the plurality of centrifugal plates 1262 may be inclined clockwise in the axial direction of the hub 122. It will be appreciated that the direction of rotation of the rotor 12 in operation coincides with the direction of inclination of the centrifugal plate 1262.
Further, the rectifying plate 1264 is smoothly connected to the centrifugal plate 1262, so that the centrifugal section 1282 and the rectifying section 1284 are smoothly transited, which helps to reduce resistance and air flow loss, thereby increasing the air volume of the fan apparatus 10.
In some embodiments, centrifugal plate 1262 is parallel to central axis X of hub 122, and the bottom of rectifying plate 1264 is bent in a direction opposite to the direction of inclination of centrifugal plate 1262 to divert the flow direction of the airflow exiting centrifugal section 1282 to coincide with the flow direction of the airflow into airflow inlet 1242 under the influence of rectifying plate 1264 and disk 124.
In this way, the air flow is better centrifugally accelerated in the centrifugal section 1282 and the air flow exiting the centrifugal section 1282 is diverted in the rectifying section 1284.
Specifically, the centrifugal plate 1262 may be a flat plate or a curved plate, and when the centrifugal plate 1262 is a curved plate, a bus bar of the curved plate is parallel to a central axis of the hub 122. In the embodiment of the present invention, the centrifugal plate 1262 is a planar plate, and as shown in fig. 4 and 5, the blades 126 are divided into a centrifugal plate 1262 and a rectifying plate 1264 along AB.
It will be appreciated that the centrifugal plate 1262 is parallel to the central axis X of the hub 122 such that the velocity of the air flow in the vertical direction within the centrifugal section 1282 does not change. In the rectifying section 1284, since the bottom of the rectifying plate 1264 is bent in a direction opposite to the inclined direction of the centrifugal plate 1262, the air flow is lifted up by the rectifying plate 1264 to flow upward, and the flowing direction of the air flow is gradually changed to flow upward by the rectifying plate 1264 and the wheel disc 124.
In certain embodiments, the top of the blade 126 is higher than the top of the disk 124. As shown in FIG. 6, the height h1 of the disk 124 is less than the height h2 between the bottom of the disk 124 and the top of the blade 126.
In this way, friction between the air flow and the disk 124 as the air flow exits is reduced, further reducing noise.
Referring to fig. 2 and 6, in some embodiments, the diameter D2 of the airflow outlet 1244 is larger than the diameter D1 of the airflow inlet 1242.
In this manner, the turbulence at the tips of the blades 126 may be reduced, improving the aerodynamic effects of the rotor 12.
Specifically, referring to fig. 6 and 7, D0 is the actual diameter of the circle where the connection between the blade 126 and the hub 122 is located after the hollow structure required for demolding is removed when the blade 126 and the hub 122 are formed, d2 is greater than or equal to 1.05×d0, and d0 is greater than or equal to 1.05×d1. Thus, the noise reduction effect is better.
In some embodiments, the housing 14 is provided with an air inlet 142 and an air outlet 144, the air inlet 142 and the air inlet 1242 being in communication, the air outlet 144 and the air outlet 1244 being in communication.
In this way, the air flows into the housing 14 through the air inlet 142, then flows into the wheel 124 from the air inlet 1242, flows to the air outlet 1244 through the air duct 128, and then flows out of the housing 14 from the air outlet 144.
Referring to fig. 1-4, in some embodiments, the fan apparatus 10 includes a plurality of directional blades 16, where the plurality of directional blades 16 are disposed above the wind wheel 12 and disposed within the housing 14, and a directional channel 162 is formed between two adjacent directional blades 16, and the directional channel 162 communicates with the airflow outlet 1244 and the air outlet 144.
In this manner, the airflow exiting the rotor 12 is again rectified by the directional blades 16 such that the airflow exiting the fan assembly 10 is less rotating.
Specifically, since the blades 126 rotate with the rotor 12, the airflow exiting the rotor 12 still has a small horizontal velocity, and therefore the airflow direction is further corrected by passing over the non-rotating directional blades 16.
Further, the number of directional vanes 16 may be the same as or different from the number of vanes 126. Preferably, the number of the orientation vanes 16 is 5 or more and 7 or less.
In certain embodiments, the housing 14 includes an upper shell 146 and a lower shell 148, the upper shell 146 and the lower shell 148 being removably connected, the wind turbine 12 being disposed within the upper shell 146, and the orientation vane 16 being disposed within the lower shell 148.
So for fan device 10 easy dismounting, be convenient for clean and maintenance, promote and be used for experience.
Further, the rotor 12 is spaced from the directional blades 16, and the top of the disk 124 is lower than the top of the blades 126, such that the directional blades 16 are spaced from the disk 124, reducing the impact noise between the rotor 12 and the directional blades 16.
In some embodiments, the area of the air inlet 142 is S1, the area of the air inlet 1242 is S2, the area of the air outlet 1244 is S3, the sum of the cross-sectional areas of the inlets of the plurality of directional passages 162 is S4, the sum of the cross-sectional areas of the outlets of the plurality of directional passages 162 is S5, the area of the air outlet 144 is S6, and S1. Gtoreq.S2.gtoreq.S3, S3. Gtoreq.S4.gtoreq.S5.gtoreq.S6 (as shown in FIG. 1).
In this way, abrupt flow path changes of the air flow are reduced, unnecessary abrupt eddy currents are avoided, and the performance of the fan device 10 is improved.
In certain embodiments, the fan apparatus 10 includes a motor 18 located within the housing 14, the motor 18 being coupled to a hub 122 and configured to drive the rotor 12 in rotation.
As such, the motor 18 drives the rotor 12 to rotate to generate negative pressure to draw the flue gas.
Specifically, hub 122 is conical in shape and the fan is at least partially disposed within the conical recess formed by hub 122. In this manner, the reasonable use of space dimensions helps reduce the height of the fan apparatus 10.
Referring to fig. 11 and 12, a smoke machine 100 according to an embodiment of the present invention includes a smoke machine body 20 and a fan device 10 according to any of the above embodiments, a smoke outlet 22 is formed at the top of the smoke machine body 20, and the fan device 10 is disposed at the smoke outlet 22.
According to the smoke machine 100 in the embodiment of the invention, after the airflow is accelerated by the airflow inlet 1242 to the centrifugal section 1282, the airflow is changed by the rectifying section 1284 to be consistent with the airflow flowing into the airflow inlet 1242 and then flows out of the airflow outlet 1244, so that the airflow flowing into the wind wheel 12 is consistent with the airflow flowing out of the wind wheel 12, the airflow at the lower part of the wind wheel 12 can enter the wind wheel 12 from the airflow inlet 1242 and then flow out of the airflow outlet 1244 at the upper part of the wind wheel 12, the airflow is effectively prevented from vertically impacting the side wall of the shell 14 after being accelerated by the wind wheel 12, noise is reduced, and user experience is improved. Moreover, the centrifugal section 1282 may be able to accelerate the airflow, which may reduce the energy consumption of the fan apparatus 10.
In the description of the present specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "an exemplary embodiment," "an example," "a particular example," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by those skilled in the art within the scope of the invention, which is defined by the claims and their equivalents.

Claims (13)

1. A fan device for a smoke machine, characterized in that the fan device comprises a wind wheel and a shell, the wind wheel is arranged in the shell, the wind wheel comprises a hub, a wheel disc and a plurality of blades, the wheel disc surrounds the hub and is arranged at intervals with the hub, an airflow inlet is formed at the bottom of the wheel disc, an airflow outlet is formed at the top of the wheel disc, a plurality of blades are connected between the wheel disc and the hub at intervals along the circumferential direction of the hub, an air channel is formed between two adjacent blades, the air channel comprises a centrifugal section and a rectifying section connected with the centrifugal section, the centrifugal section is communicated with the airflow inlet, the centrifugal section is configured to centrifugally accelerate airflow entering from the airflow inlet, and the rectifying section is communicated with the airflow outlet and is configured to change the flowing direction of airflow flowing out from the centrifugal section to be consistent with the flowing direction of the airflow entering the airflow inlet;
the cross-sectional radius of the wheel disc increases gradually from the air flow inlet to the air flow outlet.
2. The fan apparatus of claim 1, wherein the hub is conical in shape and the cross-sectional diameter of the hub increases gradually from the air flow inlet to the air flow outlet.
3. The fan apparatus of claim 1, wherein the blade and the hub are of unitary construction.
4. The fan apparatus as claimed in claim 1, wherein the blade includes a centrifugal plate and a rectifying plate slidably connected to the centrifugal plate, the plurality of centrifugal plates are inclined in the same circumferential direction of the hub, the centrifugal section is formed between two adjacent centrifugal plates, and the rectifying section is formed between two adjacent rectifying plates.
5. The fan apparatus as claimed in claim 4, wherein the centrifugal plate is parallel to a central axis of the hub, and a bottom of the rectifying plate is bent in a direction opposite to an inclined direction of the centrifugal plate so that a flow direction of the air flow flowing out of the centrifugal section is turned by the rectifying plate and the wheel disk to coincide with a flow direction of the air flow flowing into the air flow inlet.
6. The fan apparatus of claim 1 wherein the top of the blade is higher than the top of the disk.
7. The fan apparatus of claim 1, wherein the diameter of the airflow outlet is greater than the diameter of the airflow inlet.
8. The fan apparatus of claim 1, wherein the housing defines an air inlet and an air outlet, the air inlet being in communication with the air inlet, the air outlet being in communication with the air outlet.
9. The fan apparatus of claim 8, comprising a plurality of directional blades disposed above the wind wheel and disposed within the housing, wherein a directional passage is formed between two adjacent directional blades, the directional passage communicating the airflow outlet and the air outlet.
10. The fan apparatus of claim 9, wherein the housing comprises an upper shell and a lower shell, the upper shell being removably coupled to the lower shell, the wind wheel being disposed within the upper shell, the orientation vane being disposed within the lower shell.
11. The fan apparatus as claimed in claim 9, wherein the air inlet has an area of S1, the air flow inlet has an area of S3, the air flow outlet has an area of S5, a sum of cross sectional areas of inlets of the plurality of directional passages is S6, a sum of cross sectional areas of outlets of the plurality of directional passages is S7, the air outlet has an area of S8, and S1 is equal to or greater than S3 is equal to or greater than S5, S5 is equal to or greater than S6 is equal to or less than S7 is equal to or less than S8.
12. The fan apparatus of claim 1, comprising a motor located within the housing, the motor coupled to the hub and configured to drive the rotor.
13. A smoke ventilator comprising a smoke ventilator body and the fan device according to any one of claims 1-12, wherein a smoke outlet is formed in the top of the smoke ventilator body, and the fan device is arranged at the smoke outlet.
CN201810026984.9A 2018-01-11 2018-01-11 Fan device and smoke machine Active CN108019363B (en)

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