CN109185231B - Air outlet equipment and fan structure - Google Patents
Air outlet equipment and fan structure Download PDFInfo
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- CN109185231B CN109185231B CN201811306381.0A CN201811306381A CN109185231B CN 109185231 B CN109185231 B CN 109185231B CN 201811306381 A CN201811306381 A CN 201811306381A CN 109185231 B CN109185231 B CN 109185231B
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- wind deflector
- fan structure
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- 230000007246 mechanism Effects 0.000 claims abstract description 101
- 238000009434 installation Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims description 44
- 238000010276 construction Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000002829 reductive effect Effects 0.000 abstract description 8
- 238000011144 upstream manufacturing Methods 0.000 description 11
- 230000003068 static effect Effects 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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- 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
- F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
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- 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
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
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- 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
- F04D29/663—Sound attenuation
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- 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
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides air outlet equipment and a fan structure. The fan structure includes: the shell mechanism is provided with an installation cavity, and an air inlet and an air outlet which are communicated with the installation cavity; the fan blade is arranged in the mounting cavity; the resistance component is arranged in the mounting cavity and is close to the air outlet; and the wind shielding mechanism is arranged on the shell mechanism and is positioned between the resistance component and the fan blade, and the wind shielding mechanism can extend or retract relative to the inner wall of the shell mechanism. After the wind shielding mechanism stretches out, the air flow can be blocked so as to optimize unstable noise; after the wind shielding mechanism is retracted, wind resistance can be reduced, so that air output is increased, air attenuation is avoided, the performance of the fan blade is improved, and further the performance of the fan structure is guaranteed.
Description
Technical Field
The invention relates to the technical field of air outlet equipment, in particular to air outlet equipment and a fan structure.
Background
Along with the improvement of the living standard of people, the requirements on indoor heat exchange equipment such as air conditioners, warm fan blades and the like are higher and higher. On the one hand, the indoor unit of the heat exchange equipment is required to be small in size, thin in thickness and attractive in appearance, and on the other hand, the indoor unit of the heat exchange equipment is required to be more and more high in silence. However, when the air inlet and the air outlet of the heat exchange equipment are limited, dynamic and static interference and unstable airflow near the inlet and the outlet and the air duct shell are aggravated, abnormal noise of the fan blade is frequently caused, and the sound quality is poor.
At present, a convex structure is adopted on the inner wall surface of the fan blade shell mechanism, so that unstable flow of air flow in the air duct is reduced. The scheme has a good effect on the unstable sound of the outlet, but in the running process of the cross-flow fan blade, the pressure difference of the inlet and the outlet changes along with the change of the rotating speed, the unstable sound only occurs under the condition of the specific pressure difference of the inlet and the outlet, and the unstable sound does not exist under all rotating speed conditions. Because the air flow velocity in the air duct is higher, the convex structure has a blocking effect on the air flow in the air duct, so that the air quantity is attenuated, and the performance of the fan blade is seriously weakened.
Disclosure of Invention
Based on this, it is necessary to provide an air outlet device and a fan structure for avoiding air volume attenuation while optimizing unstable noise, aiming at the problem of air volume attenuation caused by blocking of the air flow of an air duct by the current convex structure.
The above purpose is achieved by the following technical scheme:
A blower structure comprising:
the shell mechanism is provided with an installation cavity, and an air inlet and an air outlet which are communicated with the installation cavity;
The fan blade is arranged in the mounting cavity;
the resistance component is arranged in the mounting cavity and is close to the air outlet; and
The wind shielding mechanism is arranged on the shell mechanism and is positioned between the resistance component and the fan blade, and the wind shielding mechanism can extend or retract relative to the inner wall of the shell mechanism.
In one embodiment, the housing mechanism includes a front panel and a scroll casing, the front panel and the scroll casing enclose the installation cavity, and the wind shielding structure is disposed in the scroll casing.
In one embodiment, the wind shielding mechanism includes:
A wind deflector extendable or retractable relative to an inner wall of the housing mechanism; and
The transmission assembly is arranged in the installation cavity, is connected with the wind shield and is used for driving the wind shield to extend or retract.
In one embodiment, the wind deflector has an extension direction perpendicular to the extension or retraction direction, the extension direction is parallel to the axial direction of the fan blade, and the wind deflector penetrates through the mounting cavity along the axial direction of the fan blade.
In one embodiment, the transmission assembly comprises a driving member and a transmission member, and the transmission member is in transmission connection with the driving member and the wind shield so as to enable the wind shield to extend or retract.
In one embodiment, the transmission member includes at least a rack and pinion transmission member, a belt transmission member, a ball screw transmission member, or a slide rail slider transmission member.
In one embodiment, the end of the wind deflector, which protrudes relative to the inner wall of the housing mechanism, is provided with a wind guiding part for guiding the flow of the outlet air flow.
In one embodiment, the air guiding part is provided with an air guiding inclined plane or an air guiding cambered surface;
or the cross section of the air guide part is triangular or trapezoidal.
In one embodiment, the protruding distance of the wind deflector relative to the inner wall of the shell mechanism is in the range of 0mm to 20mm.
In one embodiment, the angle between the wind deflector and the inner wall of the shell mechanism is in the range of 30-150 degrees.
In one embodiment, the thickness of the wind deflector along the air outlet direction of the shell mechanism ranges from 0mm to 30mm.
In one embodiment, the distance between the wind deflector and the resistance element is in the range of 5mm to 30mm.
In one embodiment, the resistance component comprises at least a heat exchange element, a microplate, an air guiding element, or a filter element.
An air outlet device comprises the fan structure with the technical characteristics;
the air outlet equipment at least comprises an air conditioner inner unit, a warm fan blade or a fresh air blade.
After the technical scheme is adopted, the invention has at least the following technical effects:
According to the air outlet device and the fan structure, air flow in the external environment enters the mounting cavity through the air inlet, is accelerated by the fan blades, is blocked by the wind shielding mechanism, and is sent out through the resistance component and the air outlet. The wind shielding mechanism may reduce the unstable flow of air flow in the housing components to optimize the unstable noise. And the wind shielding mechanism can extend or retract relative to the inner wall of the shell mechanism so as to adapt to different fan blade rotating speeds. After the wind shielding mechanism stretches out, the air flow can be blocked so as to optimize unstable noise; after the wind shielding mechanism is retracted, the wind resistance can be reduced so as to increase the air output. The problem of the current protruding structure blocks the amount of wind that leads to the air current of wind channel decay is effectively solved, avoids the amount of wind to decay, improves the fan blade performance, and then guarantees the performance of fan structure.
Drawings
FIG. 1 is a schematic diagram of a fan structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of the dimensional location of the blower configuration shown in FIG. 1;
fig. 3 is an enlarged view of a wind shielding mechanism in the blower configuration shown in fig. 1.
Wherein:
100-fan structure;
110-a housing mechanism;
111-an air inlet;
112-an air outlet;
113-a front panel;
114-a volute; 1141-an upstream section; 1142-a downstream section;
115-a receiving cavity;
116-volute tongue;
117-cochlear throat;
120-fan blades;
130-a resistance member;
140-a wind shielding mechanism;
141-wind deflector;
142-drive assembly.
Detailed Description
In order to make the objects, technical schemes and advantages of the present invention more clear, the following embodiments are used to further describe the air outlet device and the fan structure of the present invention in detail by referring to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Referring to fig. 1-3, an embodiment of the present invention provides a blower structure 100. The fan structure 100 can be applied to air-out equipment. Illustratively, the air outlet device includes, but is not limited to, a fan heater, an air conditioner indoor unit or a fresh air machine, and may be other types of air outlet devices. In this embodiment, only the air-out device is taken as an example of the fan heater. The fan structure 100 of the present invention can reduce the unstable flow of the air flow to improve the overall silencing performance; meanwhile, the fan structure 100 can also reduce wind resistance to increase air output, avoid air attenuation, and further ensure performance of the fan structure 100.
In one embodiment, the fan structure 100 includes a housing mechanism 110, a fan blade 120, a resistance member 130, and a wind shielding mechanism 140. The various components of the fan structure 100 are mounted in a housing mechanism 110. The shell mechanism 110 plays a protective role, prevents users from touching parts inside the shell mechanism 110, ensures use safety, and can also prevent sundries from entering and ensure stable operation of the fan structure 100. The housing mechanism 110 has a mounting chamber, an air inlet 111 and an air outlet 112 communicating with the mounting chamber. The fan blades 120 are disposed in the mounting cavity. The resistance member 130 is disposed in the mounting cavity and is disposed proximate the air outlet 112. The wind shielding mechanism 140 is disposed on the housing mechanism 110 and between the resistance member 130 and the fan blade 120, and the wind shielding mechanism 140 can be extended or retracted relative to the inner wall of the housing mechanism 110.
Optionally, the fan blade 120 is a cross-flow fan blade 120. The cross-flow fan 120 is installed in the installation cavity of the housing assembly and is a high-speed rotating moving component. Optionally, the resistance member 130 includes at least a heat exchange element, a micro-porous plate, an air guiding element, or a filtering element. It will be appreciated that the corresponding resistance member 130 may be different for different air outlet devices. When the air outlet device is a fan heater, the resistance member 130 includes a heat exchange element. When the air outlet device is an air conditioner indoor unit, the resistance component 130 is a micro-porous plate, an air guiding element such as an air guiding plate and the like. When the air outlet apparatus is a fresh air machine, the resistance member 130 is a filter element such as a filter plate or the like. A resistance member 130 is located downstream of the fan blade 120 for treating the outgoing air flow.
It will be appreciated that the wind shielding mechanism 140 protrudes relative to the inner wall of the housing mechanism 110, i.e. the wind shielding mechanism 140 extends from the inner wall of the housing mechanism 110 towards the mounting cavity of the housing mechanism 110, in which case the wind shielding mechanism 140 protrudes from the inner wall of the housing mechanism 110. The wind shielding mechanism 140 is retracted relative to the inner wall of the housing mechanism 110, i.e., the wind shielding mechanism 140 gradually moves from the mounting cavity of the housing mechanism 110 to the inner wall of the housing mechanism 110, such that the top of the wind shielding mechanism 140 may be retracted into the housing mechanism 110.
Furthermore, the extension and retraction of the wind shielding mechanism 140 is determined by the rotation speed of the fan blade 120, and the extension length and the retraction length of the wind shielding mechanism are different under different rotation speeds of the fan blade 120. As the rotational speed of the fan blade 120 gradually decreases, the wind shielding mechanism 140 gradually extends out of the inner wall of the housing mechanism 110. When the fan blade 120 is operated at a low rotational speed, the wind shielding mechanism 140 protrudes the most. With the gradual increase of the rotational speed of the fan blade 120, the wind shielding structure gradually retracts into the inner wall of the housing mechanism 110. When the fan blade 120 is operated at a high rotational speed, the wind shielding mechanism 140 is fully retracted.
It will be appreciated that a low rotational speed refers to the lowest rotational speed allowed by the fan blade 120, and at this time, there is a significant instability anomaly in the fan structure 100. After the wind shielding mechanism 140 is extended, the air flow of the air outlet can be blocked, so that the unstable flow of the air flow in the shell component can be reduced, and the unstable noise can be optimized. The high rotational speed is the highest rotational speed allowed by the fan blade 120, at which the fan structure 100 is in a state of unstable disappearance. After the wind shielding mechanism 140 is retracted, the wind resistance can be reduced so as to increase the air output.
When the fan structure 100 of the present invention operates, air flow in the external environment enters the installation cavity through the air inlet 111, is accelerated by the fan blades 120, is blocked by the wind shielding mechanism 140, and is sent out through the resistance component 130 and the air outlet 112. The wind shielding mechanism 140 may reduce the unstable flow of air flow in the housing components to optimize the unstable noise. In addition, the wind shielding mechanism 140 can be extended or retracted relative to the inner wall of the housing mechanism 110 to adapt to different rotation speeds of the fan blades 120. After the wind shielding mechanism 140 is extended, the air flow can be blocked to optimize unstable noise; after the wind shielding mechanism 140 is retracted, the wind resistance can be reduced so as to increase the air output. The problem of air quantity attenuation caused by blocking of the air flow of the air duct by the existing protruding structure is effectively solved, the air quantity attenuation is avoided, the performance of the fan blade 120 is improved, and further the performance of the fan structure 100 is guaranteed.
In one embodiment, the housing assembly includes a front panel 113 and a volute 114. The front panel 113 and the scroll casing 114 enclose the above-described installation cavity. The wind shielding structure is disposed in the volute 114. The extending direction of the installation cavity is the same as the axial direction of the fan blade 120. The fan blades 120 are mounted in the mounting cavity. The installation cavity between the fan blade 120 and the air inlet 111 is an air inlet channel, and the installation cavity between the fan blade 120 and the air outlet 112 is an air outlet channel. The external air flow enters the fan blade 120 from the air inlet 111 through the air inlet channel, enters the air outlet channel after being accelerated by the fan blade 120, and is sent out through the resistance component 130 and the air outlet 112.
The air inlet 111 is located above the housing assembly. Optionally, the housing assembly further includes an air inlet grille disposed in the air inlet 111, for preventing sundries from entering the housing assembly, and ensuring safe operation of the fan structure 100. The front air plate is located at a single side of the lower part of the air inlet 111, and as shown in fig. 1, the front panel 113 is located at the left side of the fan blade 120. When the fan structure 100 is installed, the front panel 113 faces the user. The volute 114 is located on the right side of the fan blade 120, and wraps the fan blade 120 on the left side and the right side of the front panel 113. The air outlet 112 is located at the lower side of the fan blade 120 and is close to the front panel 113. And the shell component further comprises an air guide component, and the air guide component is used for guiding the air-out airflow to flow so as to ensure the comfort of the air-out airflow and improve the comfort of the user. Illustratively, the wind-guiding components include, but are not limited to, an air-out grille, a vane or air deflector structure, or the like.
Also, the volute 114 includes an upstream section 1141 and a downstream section 1142. As shown in FIG. 1, the upstream segment 1141 is located on the right side of the fan blade 120, and the downstream segment 1142 is located below the fan blade 120. The housing assembly also includes a volute tongue 116 and a volute throat 117. The volute tongue 116 is disposed on the front panel 113 and between the resistance member 130 and the fan blade 120, and a certain space exists between the volute tongue 116 and the fan blade 120. The volute throat 117 is disposed in the volute 114 and is connected to the upstream section 1141 of the volute tongue 116.
Referring to fig. 1-3, in one embodiment, the housing assembly also has a receiving cavity 115. The wind shielding mechanism 140 is installed in the accommodating chamber 115 and can extend or retract the accommodating chamber 115 from the accommodating chamber 115 to facilitate extension and retraction of the wind shielding structure. Illustratively, the receiving chamber 115 is located between the upstream segment 1141 and the downstream segment 1142.
It can be appreciated that the through-flow fan 120 has a low static pressure coefficient, resulting in a small inlet-outlet pressure difference. When the resistance member 130 exists at the air outlet 112, the unstable pressure of the fan blade 120 is easily caused to generate unstable abnormal noise. To reduce this noise, it is conventional practice to increase the rotational speed of the fan blades 120, thereby increasing the static pressure output by the fan structure 100. In order to more flexibly eliminate the noise, the present invention provides the housing mechanism 110 with the retractable wind shielding mechanism 140. The wind shielding mechanism 140 is retracted into the accommodating cavity at high rotation speeds, and the performance of the air duct is not affected. By gradually extending the wind shielding mechanism 140 out of the housing mechanism 110 when the rotational speed decreases and the static pressure is unstable, the unstable sound is strictly eliminated by the rule that the wind shielding plate 141 is gradually elongated with the decrease of the rotational speed.
The principle of eliminating unstable sounds is as follows: due to the smaller size of the blower structure 100, the compact internal structure, limited air inlet direction, the presence of the significant resistance component 130 at the air outlet 112, and the like, the air flow at the air outlet 112 is biased toward the volute tongue 116, resulting in significant swirling near the downstream segment 1142. When the rotation speed of the fan blade 120 is low, the static pressure of the fan blade 120 is unstable, the airflow at the air outlet 112 cannot stabilize the vortex in the area, and the vortex easily develops to the upstream section 1141 and enters the main through-flow area of the fan blade 120, so as to disturb the main flow, and cause unstable flow of the airflow at the air outlet 112, thereby generating unstable sound. By adding the wind shielding mechanism 140 between the upstream section 1141 and the downstream section 1142 of the scroll casing 114, the wind shielding mechanism 140 must be crossed when the scroll develops towards the upstream section 1141, and the airflow dynamic pressure at the end of the wind shielding mechanism 140 is obviously higher than that of the wall surface area of the scroll casing 114, so that the difficulty of the scroll to cross the wind shielding mechanism 140 is increased, the scroll is firmly controlled in the area, the smoothness of the main flow is ensured, and the unstable sound is eliminated.
In one embodiment, the wind shielding mechanism 140 includes a wind shielding plate 141 and a transmission assembly 142. The air deflector 141 may be extended or retracted relative to the inner wall of the housing mechanism 110. The transmission assembly 142 is disposed in the mounting cavity and connected to the wind deflector 141, for driving the wind deflector 141 to extend or retract. The air deflector 141 serves to block the flow of the exhaust air to reduce the unstable flow of the air flow in the housing components and to optimize the unstable noise. The transmission assembly 142 is a power source of the wind deflector 141 and is used for driving the wind deflector 141 to move. Alternatively, the wind deflector 141 is in a flat plate shape.
It can be appreciated that the air outlet device further includes a controller, and the controller is connected to the motor of the fan blade 120 for adjusting the rotation speed of the fan blade 120. The controller is also connected with the transmission assembly 142 for controlling the motion of the transmission assembly 142 to adjust the extension length or the retraction length of the air deflector. When the fan structure 100 operates, the rotational speed of the fan blade 120 is stored in the controller in real time, and meanwhile, the controller can control the transmission assembly 142 to move according to the rotational speed of the fan blade 120 and the change of the rotational speed, so that the transmission assembly 142 drives the air deflector to move.
When the fan blade 120 runs at a low rotation speed, the controller controls the transmission assembly 142 to drive the air deflector to extend. The air deflector can block the air flow of the air outlet, improves the air flow speed at the top of the air deflector 141, increases the resistance of the outlet vortex to develop towards the upstream so as to increase the vortex backflow difficulty coefficient at the air outlet 112, thereby preventing the vortex from developing towards the upstream section 1141, controlling the vortex to be in the air outlet 112 area, ensuring the stability of a through-flow area, improving the stability of an air outlet air duct, reducing unstable noise and improving the overall sound quality effect of the fan structure 100 under low rotation speed. When the fan blade 120 operates at a high rotation speed, the controller controls the transmission assembly 142 to drive the air deflector to retract. At this time, the wind guard 141 does not block the air flow, thereby reducing wind resistance and improving performance of the fan structure 100.
In one embodiment, the wind deflector 141 has an extension direction perpendicular to the extension or retraction direction, which is parallel to the axial direction of the fan blade 120. It is understood that the direction of extension of wind deflector 141 refers to a direction perpendicular to the extension or retraction of wind deflector 141, i.e. perpendicular to the direction of movement of wind deflector 141, and that this direction of extension is also perpendicular to the direction of the wind outlet. That is, the surface of the flat wind deflector 141 extends in the axial direction of the fan blade 120. As shown in fig. 1, the extending direction is the front-rear direction of the wind deflector 141. The wind deflector 141 penetrates the mounting cavity in the axial direction of the fan blade 120. That is, the length of the installation cavity in the axial direction of the fan blade 120 is equal to the length of the wind shield 141 in the axial direction of the fan blade 120. In this way, the blocking effect of the wind shield 141 on the airflow can be ensured, and unstable noise caused by leakage of the airflow can be avoided.
In an embodiment, the extending distance of the wind deflector 141 may be changed according to the rotation speed of the wind blade 120, the rotation speed of the wind blade 120 is reduced, and the transmission assembly 142 pushes the wind deflector 141 to extend. The rotation speed of the fan blade 120 increases, and the transmission assembly 142 pushes the wind shield 141 to retract. Thus, the vortex of the air outlet 112 can not develop to the upstream section 1141 under the low rotation speed, so as to achieve the purpose of improving the sound quality. And, under high rotational speed, the deep bead 141 is retracted gradually, reduces the influence of deep bead 141 to fan structure 100 amount of wind, guarantees the air output to do not influence fan performance.
In one embodiment, the transmission assembly 142 includes a driving member and a transmission member, and the transmission member is in transmission connection with the driving member and the wind deflector 141, so as to extend or retract the wind deflector 141. Illustratively, the driving member is a motor. The controller is electrically connected with the driving member and is used for controlling the driving member to rotate forward or backward, so that the driving member can drive the transmission member to move so as to drive the wind shield 141 to extend or retract.
Optionally, the transmission member includes at least a rack and pinion transmission member, a belt transmission member, a ball screw transmission member, or a slide rail slider transmission member. Of course, in other embodiments of the present invention, the driving member may also have other structures capable of driving the wind deflector 141 to reciprocate linearly. In this embodiment, the transmission member is a rack-and-pinion transmission member, that is, the movement of the wind deflector 141 is driven by the gear and rack transmission. Specifically, a gear is mounted at the output end of the driving member, a rack is disposed on the wind guard 141, and the gear is engaged with the rack. When the driving member drives the gear to rotate, the gear can drive the rack and the wind shield 141 thereon to move up and down, so as to realize the extension or retraction of the wind shield 141.
In one embodiment, the end of the wind deflector 141 protruding from the inner wall of the housing mechanism 110 has a wind guiding portion for guiding the flow of the air-out airflow. The wind guide portion guides the flow of the air-out air along the wind deflector 141, and reduces the impact received by the end of the wind deflector 141. Optionally, the air guiding part is provided with an air guiding inclined plane or an air guiding cambered surface, or the cross section of the air guiding part is triangular or trapezoidal. As shown in fig. 3, when the wind guiding portion of the wind deflector 141 is a broken line outline, the wind deflector 141 is flat plate-shaped; when the wind guiding part of the wind deflector 141 is a dotted outline, the cross section of the wind guiding part is trapezoidal; when the wind guiding portion of the wind deflector 141 has a solid line profile, the cross-sectional shape of the wind guiding portion is triangular.
In one embodiment, the protruding distance H of the wind deflector 141 with respect to the inner wall of the housing mechanism 110 is in the range of 0mm to 20mm. The protruding length of the wind shield 141 is completely retracted into the accommodating chamber under the high rotation speed condition, and as the rotation speed of the fan blade 120 is gradually reduced, the wind shield 141 is gradually pushed out by the transmission member, and the maximum protruding length thereof is 20mm. Preferably, the protruding distance H of the wind deflector 141 with respect to the inner wall of the housing mechanism 110 is in the range of 4mm to 6mm.
In one embodiment, the angle β between the wind deflector 141 and the inner wall of the housing mechanism 110 is in the range of 30 ° to 150 °. This ensures that the wind deflector 141 blocks the vortex. Preferably, the angle β between the wind deflector 141 and the inner wall of the housing mechanism 110 is 90 °.
In one embodiment, the thickness D of the wind deflector 141 in the air outlet direction of the housing mechanism 110 is in the range of 0mm to 30mm. Thus, the reliability of the operation of the wind shield 141 can be ensured, so that the wind shield 141 can block vortex and eliminate unstable noise. Preferably, the thickness D of the wind deflector 141 in the air outlet direction of the housing mechanism 110 is in the range of 1mm to 8mm.
In one embodiment, the distance L between the air deflector 141 and the resistance member 130 ranges from 5mm to 30mm. Preferably, the distance L between the wind deflector 141 and the resistance member 130 is 20mm.
An embodiment of the present invention further provides an air outlet device, including the fan structure 100 in the foregoing embodiment. The air outlet device adopts the fan structure 100, so that unstable noise generated when the fan blades 120 rotate at a low speed can be eliminated, the air outlet quantity of the fan blades 120 rotate at a high speed can be ensured, the air outlet quantity is improved, the performance of the fan structure 100 is ensured, and the performance of the air outlet device is further ensured.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be regarded as the description scope of the present specification.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (14)
1. A fan structure, comprising:
A housing mechanism (110), the housing mechanism (110) having a mounting cavity, an air inlet (111) and an air outlet (112) in communication with the mounting cavity;
the fan blades (120) are arranged in the mounting cavity;
The resistance component (130) is arranged in the mounting cavity and is close to the air outlet (112); and
The wind shielding mechanism (140) is arranged on the shell mechanism (110) and is positioned between the resistance component (130) and the fan blade (120), and the wind shielding mechanism (140) can extend or retract relative to the inner wall of the shell mechanism (110);
the wind shielding mechanism (140) can be controlled to gradually extend out of the inner wall of the shell mechanism (110) along with the gradual reduction of the rotating speed of the fan blade (120).
2. The fan structure according to claim 1, wherein the housing mechanism (110) includes a front panel (113) and a scroll casing, the front panel (113) and the scroll casing enclosing the installation cavity, and the wind shielding mechanism (140) is disposed in the scroll casing.
3. The fan structure according to claim 1 or 2, characterized in that the wind shielding mechanism (140) includes:
A wind deflector (141) which can be extended or retracted relative to the inner wall of the housing mechanism (110); and
And the transmission assembly (142) is arranged in the mounting cavity, is connected with the wind deflector (141) and is used for driving the wind deflector (141) to extend or retract.
4. A fan structure according to claim 3, characterized in that the wind deflector (141) has an extension direction perpendicular to the extension or retraction direction, which extension direction is parallel to the axial direction of the fan blade (120), the wind deflector (141) penetrating the mounting cavity in the axial direction of the fan blade (120).
5. A fan construction according to claim 3, wherein the transmission assembly (142) comprises a driving member and a transmission member, the transmission member drivingly connecting the driving member and the wind deflector (141) to extend or retract the wind deflector (141).
6. The fan structure of claim 5, wherein the transmission includes at least a rack and pinion transmission, a belt transmission, a ball screw transmission, or a slide slider transmission.
7. A fan structure according to claim 3, characterized in that the end of the wind deflector (141) protruding with respect to the inner wall of the housing means (110) is provided with a wind guiding portion for guiding the flow of the outlet air.
8. The fan structure of claim 7, wherein the air guiding part has an air guiding inclined plane or an air guiding cambered surface;
or the cross section of the air guide part is triangular or trapezoidal.
9. A fan structure according to claim 3, characterized in that the protruding distance of the wind deflector (141) with respect to the inner wall of the housing mechanism (110) is in the range of 0mm to 20mm.
10. A fan structure according to claim 3, characterized in that the angle between the wind deflector (141) and the inner wall of the housing means (110) is in the range of 30 ° to 150 °.
11. A fan structure according to claim 3, wherein the thickness of the wind deflector (141) in the air outlet direction of the housing mechanism (110) ranges from 0mm to 30mm.
12. A fan structure according to claim 3, characterized in that the distance between the wind deflector (141) and the resistance member (130) ranges from 5mm to 30mm.
13. The fan structure according to claim 1 or 2, characterized in that the resistance component (130) comprises at least a heat exchange element, a micro-porous plate, an air guiding element or a filter element.
14. An air outlet arrangement, characterized by comprising a fan structure (100) according to any of claims 1 to 13;
the air outlet equipment at least comprises an air conditioner indoor unit, a warm fan blade (120) or a fresh air blade (120).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811306381.0A CN109185231B (en) | 2018-11-05 | 2018-11-05 | Air outlet equipment and fan structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811306381.0A CN109185231B (en) | 2018-11-05 | 2018-11-05 | Air outlet equipment and fan structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109185231A CN109185231A (en) | 2019-01-11 |
| CN109185231B true CN109185231B (en) | 2024-05-17 |
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ID=64941698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811306381.0A Active CN109185231B (en) | 2018-11-05 | 2018-11-05 | Air outlet equipment and fan structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109185231B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111852908B (en) * | 2019-04-30 | 2021-12-21 | 广东美的制冷设备有限公司 | Fan assembly and air conditioner |
| CN113310106B (en) * | 2021-04-14 | 2023-01-06 | 奥普家居股份有限公司 | Low-noise warmer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205351715U (en) * | 2015-12-30 | 2016-06-29 | 青岛海尔空调电子有限公司 | Centrifugal fan and air conditioner |
| CN206018824U (en) * | 2016-08-24 | 2017-03-15 | 珠海格力电器股份有限公司 | Air-conditioner and its indoor apparatus of air conditioner |
| CN208950969U (en) * | 2018-11-05 | 2019-06-07 | 珠海格力电器股份有限公司 | Air outlet device and blower fan structure |
-
2018
- 2018-11-05 CN CN201811306381.0A patent/CN109185231B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205351715U (en) * | 2015-12-30 | 2016-06-29 | 青岛海尔空调电子有限公司 | Centrifugal fan and air conditioner |
| CN206018824U (en) * | 2016-08-24 | 2017-03-15 | 珠海格力电器股份有限公司 | Air-conditioner and its indoor apparatus of air conditioner |
| CN208950969U (en) * | 2018-11-05 | 2019-06-07 | 珠海格力电器股份有限公司 | Air outlet device and blower fan structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109185231A (en) | 2019-01-11 |
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