WO2021164565A1 - 风扇 - Google Patents

风扇 Download PDF

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Publication number
WO2021164565A1
WO2021164565A1 PCT/CN2021/075266 CN2021075266W WO2021164565A1 WO 2021164565 A1 WO2021164565 A1 WO 2021164565A1 CN 2021075266 W CN2021075266 W CN 2021075266W WO 2021164565 A1 WO2021164565 A1 WO 2021164565A1
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WO
WIPO (PCT)
Prior art keywords
air
fan
filter
air intake
flow
Prior art date
Application number
PCT/CN2021/075266
Other languages
English (en)
French (fr)
Inventor
应辉
Original Assignee
应辉
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202020183858.7U external-priority patent/CN211852217U/zh
Priority claimed from CN202010101725.5A external-priority patent/CN111306082A/zh
Application filed by 应辉 filed Critical 应辉
Publication of WO2021164565A1 publication Critical patent/WO2021164565A1/zh

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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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • 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
    • 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
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning

Definitions

  • the invention relates to the field of air conditioning equipment, in particular to fans.
  • Air purifiers are small household appliances used to purify indoor air, mainly to solve indoor air pollution problems caused by decoration or other reasons. Because the release of pollutants in indoor air is persistent and uncertain, the use of air purifiers to purify indoor air is an internationally recognized method to improve indoor air quality. There are many different technologies and media in the air purifier, which enable it to provide users with clean and safe air. Commonly used air purification technologies include: low-temperature asymmetric plasma air purification technology, adsorption technology, negative ion technology, negative oxygen ion technology, molecular complex technology, nano-TiO2 technology, HEPA high efficiency filtration technology, electrostatic dust collection technology, active oxygen technology, etc. ; Material technology mainly includes: photocatalyst, activated carbon, synthetic fiber, HEPA high-efficiency material, etc. The cost of high-quality filter will account for 20% to 30% of the total cost of the air purifier.
  • FIG. 1 is a cross-sectional view of a bladeless fan in the prior art. As shown in FIG. 1, most of them have an annular nozzle 901, a housing 903, a base 904, a filter screen 905, a fan motor 906 and a mesh inner container 907. Wherein, the housing 903 with the air inlet mesh is set on the base 904, the housing 903 is provided with a filter screen 905, the filter screen 905 is provided with a mesh liner 907, and the mesh liner 907 is provided with the first fan motor 906.
  • An air inlet and the annular nozzle 901 are all arranged above the direction of gravity of the fan motor 906, and the air outlet of the fan motor 906 is connected to the nozzle 901.
  • the indoor air is filtered by the mesh of the housing 903 and the filter 905 in turn, and then enters the mesh liner 907.
  • the air inlet of the fan motor 906 sucks air in the anti-gravity direction and then continues to be delivered to the annular nozzle 901 in the anti-gravity direction (vertical upward). Then, after the air spreads around the annular nozzle 901, it is sprayed out.
  • the shell of this type of bladeless fan is a structure in which two shells are aligned horizontally, and each shell is provided with a filter screen.
  • the filter screen is sealed between the three-dimensional sealing tape arranged downstream and the mesh inner liner.
  • the cost of the three-dimensional sealing tape is extremely high, and the sealing effect is poor after long-term use.
  • the purpose of the present invention is to provide a fan, which overcomes the defects of the prior art, can change the movement direction of the air flow in the fan, reduce the overall height of the fan, reduce the overall volume, and extend the filter.
  • the service life of the net reduces the noise and cost of use.
  • An embodiment of the present invention provides a fan, including:
  • the body includes an air inlet, an air outlet, an air intake cover, and a fan motor assembly for generating air flow.
  • the air intake cover is arranged downstream of the air inlet and upstream of the air inlet of the fan motor assembly ,
  • the air intake cover is provided with a muffler hole, and the air flow passes through the body in a first direction after passing through the muffler hole;
  • the nozzle is connected to the air outlet, and is used to receive the air flow from the body and emit the air flow to enter the nozzle with the air flow, and the air flow is based at least on the first direction opposite to the first direction. After moving in two directions, the nozzle is emitted.
  • the muffler holes are arranged in an array on the surface of the air intake cover to form an array of muffler holes, and the array of muffler holes surround the air intake cover.
  • the muffler holes are variable-diameter through holes, and the diameter of each muffler hole located on the outer wall of the air intake cover is 2.5 mm to 4 mm, and the diameter of the opening located on the inner wall of the air intake cover It is 1mm to 2.5mm.
  • the flow cross-sectional area of the air inlet of the fan motor assembly is S 1
  • the sum of the flow cross-sectional areas of all the muffler holes is S 2 , S 2 ⁇ S 1 .
  • the air intake cover is an inverted barrel-shaped member, including an annular side wall, an opening at a first end of the annular side wall, and a base plate at a second end of the annular side wall, the opening The part covers the air inlet of the fan motor assembly, and an air inlet space is formed between the air inlet and the base plate.
  • the body part further includes a filter, the filter is a tubular air filter, the filter surrounds the air intake cover, and the filter is disposed on the noise reduction of the air intake cover Upstream of the hole.
  • the fan further includes a top cover crimping the first side of the tubular air filter along the first direction, the top cover is rotatably engaged with the body, and the base plate supports The top cover.
  • a limiting member is provided on one side of the top cover crimping the tubular air filter, and the base plate is provided with a circular limiting groove to guide the limiting member in the circular limiting position. Rotating within the range of the groove, with the rotation of the limiting member, the top cover is engaged with or separated from the body.
  • it further includes an air intake bracket supporting the second side of the tubular air filter along the second direction, and the annular upper end surface of the tubular air filter and the base plate of the air intake cover are both aligned with the top The cover is sealed, and the annular lower end surface of the tubular air filter and the opening of the air intake cover are sealed with the air intake bracket.
  • At least part of the muffler holes have a flow guiding direction directed toward the air inlet of the fan motor assembly to limit the flow of air passing through the muffler holes to the air inlet of the fan motor assembly to converge.
  • S 2 ⁇ 2.5S 1 .
  • the first direction is a direction of gravity
  • the second direction is a direction of anti-gravity
  • the opening diameter of the muffler hole located on the outer wall of the air intake cover is 2.8 mm to 3.0 mm, and the opening diameter of the inner wall of the air intake cover is 2.5 mm.
  • the fan of the present invention can change the movement direction of the air flow in the fan, effectively reduce noise, reduce the overall volume, and reduce the use cost.
  • Fig. 1 is a cross-sectional view of a bladeless fan in the prior art.
  • Fig. 2 is a schematic diagram of an internal air duct of a fan according to an embodiment of the present invention.
  • Fig. 3 is a perspective view of a fan according to an embodiment of the present invention.
  • Fig. 4 is a cross-sectional view taken along the line A-A in Fig. 3.
  • Fig. 5 is an exploded view of a fan according to an embodiment of the present invention.
  • Fig. 6 is a schematic diagram of a combination of an air intake cover and an air intake bracket in a fan according to an embodiment of the present invention.
  • Fig. 7 is a schematic diagram of the air intake cover and the air intake bracket separated in the fan according to an embodiment of the present invention.
  • Fig. 8 is a schematic diagram of a first modification of the air intake cover of the fan according to an embodiment of the present invention.
  • Fig. 9 is a schematic diagram of a second modification of the air intake cover of the fan according to an embodiment of the present invention.
  • Fig. 10 is a cross-sectional view of a fan motor assembly according to an embodiment of the present invention.
  • Fig. 11 is a cross-sectional view taken along the line B-B in Fig. 10.
  • Fig. 12 is a partial exploded view of a fan motor assembly in a fan according to an embodiment of the present invention.
  • Fig. 13 is a perspective view of a motor cover in a fan according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of the principle of the fan motor assembly in the fan of an embodiment of the present invention for guiding flow to the nozzle.
  • Fig. 15 is a perspective view of a nozzle in a fan according to an embodiment of the present invention.
  • Fig. 16 is an exploded schematic view of a nozzle in a fan according to an embodiment of the present invention.
  • Fig. 17 is a partial cross-sectional view of the first type of nozzle in a fan according to an embodiment of the present invention.
  • Figure 18 is a partial cross-sectional view of a second type of nozzle in a fan according to an embodiment of the present invention.
  • Fig. 19 is a schematic diagram of a second type of nozzle in a fan according to an embodiment of the present invention to increase the spray angle.
  • FIG. 20 is a schematic diagram of the second type of nozzle in the maximum injection angle of the fan according to an embodiment of the present invention.
  • Fig. 2 is a schematic diagram of the internal air duct of the fan of the present invention.
  • the fan of the present invention includes a body 10 for generating an air flow and a nozzle 7 for spraying the air flow.
  • the body 10 at least includes a top cover 11, a filter 2, an air intake cover 3 for providing an air inlet, a fan motor assembly 5 for generating air flow, and a housing 8 for providing an air outlet. Both sides of the housing 8 are provided with air inlet holes, and the filter 2 is arranged in the housing 8 at corresponding positions inside the air inlet holes.
  • the filter 2 is arranged upstream of the air intake cover 3, and the filter 2 surrounds the air intake cover 3.
  • the air intake cover 3 is arranged at the air inlet of the fan motor assembly 5.
  • the fan motor assembly 5 causes the air flow to pass through the body 10 in a first direction W, which is the direction of gravity.
  • the nozzle 7 is connected to the air outlet, and is used to receive the air flow from the body 10 and emit the air flow.
  • the air flow enters the nozzle 7 with the air flow.
  • the air flow is emitted out of the nozzle after moving at least in a second direction X opposite to the first direction W. 7.
  • the second direction X is the anti-gravity direction.
  • the air inlet is provided in the air intake cover 3, and the air intake cover 3 is located at the upper part of the body 10 in the direction of gravity.
  • the air outlet is located at the lower part of the housing 8 of the body 10 in the direction of gravity, and the fan motor assembly 5 is located in the area between the air inlet and the air outlet.
  • the nozzle 7 has at least one output air passage 72, the extension direction of the output air passage 72 is parallel to the first direction W, and the air flow passes through the output air passage 72 in the second direction X.
  • the fan of the present invention adopts a completely different air duct design from the prior art, inverts the suction direction of the fan motor assembly 5, takes high air suction from the upper part of the body 10, and the air flows from top to bottom after passing through the fan motor assembly 5.
  • the exhaust gas enters the nozzle 7 from the lower part of the body 10, and after the air flow flows from the nozzle 7 from bottom to top, it can be ejected from the air outlets 71 of different heights of the nozzle 7.
  • the present invention overlaps the position layout of the fan motor assembly 5 and the position layout of the nozzle 7 in the first direction, further reduces the overall height, and makes full use of the idle space in the center of the nozzle 7. Moreover, under the premise of the same height, the present invention can realize a larger nozzle 7 and enhance the air blowing capacity.
  • the nozzle 7 may be a tubular member arranged on one side of the body 10 and extending in a vertical direction.
  • the lower section of the tubular member is rotatably connected to the opening of the body 10, but it is not limited to this.
  • the nozzle 7 and the fan motor assembly 5 in the present invention can be arranged in parallel along the first direction W (or the second direction X), and the nozzle 7 and the fan motor assembly 5 are at least partially overlapped based on projections of the same vertical plane. This allows the air outlet 71 of the nozzle 7 to be set at the same level as the fan motor assembly 5 or even lower than the level of the fan motor assembly 5.
  • the present invention divides the long-distance air flow stroke of the prior art through the fan motor assembly and the nozzle in a single direction into at least two short-distance air flow strokes in opposite directions, and two short-distance air flow strokes.
  • the air flow strokes can be parallel to each other, which breaks through the industry technical barriers that fan motor components and nozzles must be arranged in order in the height direction, so that the overall height of the fan can be greatly reduced, the center of gravity of the product is also lowered, and the standing posture of the product is improved.
  • the stability In addition, the air inlet located at the upper position will not suck in dust on the ground when inhaling air, which reduces the use load of the filter screen, does not need to replace the filter screen frequently, and greatly reduces the use cost of the leafless fan filter screen.
  • the air outlet of the fan motor assembly 5 is connected to two guide air passages.
  • the guide air passages are respectively connected to the openings on both sides of the body 10.
  • the nozzle 7 has a half-frame nozzle body 70, and the nozzle body 70 spans the body 10 toward the first The first side surface in the direction W, and both ends of the nozzle body 70 communicate with the openings.
  • the body 10 has at least one guiding air passage for changing the flow direction of the air flow.
  • the guiding air passage extends in a third direction Y perpendicular to the first direction W, and respectively communicates with the air outlet of the fan motor assembly 5 and the nozzle 7.
  • the fan motor assembly 5, the guide air passage and the nozzle 7 jointly form at least one U-shaped combined air passage, but it is not limited to this.
  • the shape of the nozzle body 70 in this embodiment is an inverted U shape, and the nozzle body 70 can rotate at a certain angle relative to the body 10 based on the axis of the opening of the body 10 as a rotation axis, so as to blow air in different directions.
  • the air flow flowing along the nozzle body 70 flows obliquely (based on the vertical plane), as the air flow enters the depth of the nozzle body 70, the air flow will still generate in the second direction X (anti-gravity Direction).
  • the nozzle body 70 is provided with at least one air outlet 71 opening along the fourth direction Z, and the fourth direction Z is perpendicular to the plane formed by the first direction W and the third direction Y.
  • the air outlet 71 of the nozzle body 70 is combined to form an inverted U-shaped air duct, and the air inlet of the body 10 is located within the range of the inverted U-shaped air duct.
  • the nozzle body 70 has a first state of straddling the first side surface of the body 10 facing the first direction, and after rotating based on the opening, the nozzle body 70 avoids the first projection area of the filter 2 based on the second direction.
  • the filter 2 has a lifting stroke that avoids the nozzle body 70 in the second direction to enter and exit the body 10 based on the second state of the nozzle body 70.
  • the projection of the lift stroke of the filter 2 based on the second direction and the projection of the second state of the nozzle body 70 based on the second direction do not overlap, so that the filter 2 can be detached in the second direction X and the body 10 can be removed, but not Limited by this.
  • the accommodating space has two replacement channels for the filter 2 to enter and exit the accommodating space (the U-shaped nozzle body 70 naturally has two large openings communicating with the internal accommodating space), and the extension direction of the replacement channel is vertical
  • the filter 2 has a first stroke in and out of the accommodating space from the body 10 in the second direction, and a second stroke in and out of the accommodating space from the replacement channel.
  • the height of the accommodating space and the height J of the replacement channel are both greater than the height K of the filter 2
  • the width of the accommodating space and the width of the replacement channel are both greater than the width of the filter 2.
  • Fig. 3 is a perspective view of the fan of the present invention.
  • Fig. 4 is a cross-sectional view taken along the line A-A in Fig. 3.
  • Fig. 5 is an exploded view of the fan of the present invention.
  • the body of the fan of the present invention includes a base 6 arranged from bottom to top along the second direction X, a fan motor assembly 5 for generating air flow,
  • the air intake bracket 14, the air intake cover 3 that provides the air inlet, the filter 2 and the top cover 11.
  • the present invention makes full use of the free central area of the nozzle 7 in the prior art, and sets the body 10 in the central area of the nozzle 7 as a whole. The volume is greatly reduced, which reduces the cost of product transportation and product storage.
  • Two mutually aligning inner shells 4 are engaged with both sides of the fan motor assembly 5 and the base 6. After the inner shells 4 are screwed together, the fan motor assembly 5 is limited to the top of the base 6, and the two inner shells 4 are formed by mating An annular groove.
  • the inner sides of the two ends of the nozzle body 70 are respectively provided with a first air inlet 74 and a second air inlet 75.
  • the first air inlet 74 and the second air inlet 75 respectively communicate with an opening on both sides of the body 10.
  • the filter 2 surrounds the air intake cover 3, and the filter 2 is arranged upstream of the air inlet of the air intake cover 3.
  • the filter 2 is a tubular air filter 23.
  • the first side of the tubular air filter 23 is provided with a first annular support frame 22 for fixing the first annular seal 21, and the lower surface of the top cover 11 is provided with a slot.
  • the slot of 11 is detachably engaged with the first annular support frame 22.
  • the medium of the tubular air filter 23 can be an existing air filter material or an air filter material invented in the future, and is not limited thereto.
  • Fig. 6 is a schematic diagram of the combination of the air intake cover and the air intake bracket in the fan of the present invention.
  • Fig. 7 is a schematic diagram of the air intake cover and the air intake bracket separated in the fan of the present invention.
  • the air intake cover 3 in this embodiment is arranged downstream of the air inlet and upstream of the air intake of the fan motor assembly 5.
  • the air intake cover 3 is provided with a muffler hole 31, and the air flow passes through the muffler After the hole 31 is passed through the body 10 in the first direction.
  • the muffler holes 31 are arranged in an array on the surface of the air intake cover 3 to form an array of muffler holes 31, and the array of muffler holes 31 surround the air intake cover 3.
  • the muffler hole 31 is a variable-diameter through hole.
  • the opening area of each muffler hole 31 on the outer wall is larger than the opening area of the inner wall.
  • the opening diameter of the inner wall of the gas hood 3 is 1 mm to 2.5 mm.
  • the diameter of the opening of the muffler hole 31 located on the outer wall of the air intake cover 3 is 2.8mm to 3.0mm, and the diameter of the opening located on the inner wall of the air intake cover 3 is 2.5mm, so that each muffler hole 31 has a better The noise reduction and noise reduction function in order to obtain a better mute effect of the whole machine.
  • the flow cross-sectional area of the air inlet of the fan motor assembly 5 is S 1
  • the sum of the flow cross-sectional areas of all muffler holes 31 is S 2 , S 2 ⁇ S 1 .
  • the sum of the flow cross-sectional areas of all the muffler holes 31 is S 2 greater than or equal to 2.5 times the flow cross-sectional area S 1 of the air inlet, thereby further ensuring a better mute effect.
  • the top cover 11 and the body 10 are rotatably engaged, the base plate 34 supports the top cover 11, the top cover 11 is provided with a stopper on the side where the tubular air filter is pressed against, and the base plate 34 is provided with a circular stop groove 32 for guiding and restricting
  • the positioning member rotates within the range of the circular limiting groove 32, and with the rotation of the limiting member, the top cover 11 and the body 10 are engaged or separated.
  • the intake bracket 14 supports the second side of the tubular air filter in the second direction.
  • the annular upper end surface of the tubular air filter 23 and the base plate 34 of the air intake cover 3 are both sealed with the top cover 11, and the annular lower end surface of the tubular air filter 23 And the opening 35 of the air intake cover 3 and the air intake bracket 14 are sealed.
  • the air intake cover 3 provides support and rotation guidance for the top cover 11, strengthens the overall strength of the product and the functionality of special filter replacement.
  • the fan of the present invention opens the top cover 11 by rotating and replaces a new tubular air filter. Net 23.
  • the air intake bracket 14 is provided with a plurality of first buckles 142 surrounding the central opening 141 and a plurality of second buckles 143 arranged outside the first buckles 142.
  • the bayonet of the opening 35 of the air intake cover 3 is buckled with the first buckle 142 of the air intake bracket 14.
  • the lower surfaces of the two side support frames 13 are connected to the second buckle 143 of the air intake bracket 14, and The height is greater than the height of the fan motor assembly 5, and a space for accommodating the filter 2 and the air intake cover 3 is provided between the two upper side support frames 13 of the enclosed housing 8.
  • the lower surface of the air intake bracket 14 is provided with a connecting column, and the air intake cover 3 is connected to the upper surface of the air intake bracket 14 so that the air intake cover 3 can be connected to the air inlet of the fan motor assembly 5 through the air intake bracket 14.
  • 12 is a circular connecting frame.
  • the air intake cover 3 of the following structure can be adopted in the present invention:
  • Fig. 8 is a schematic diagram of a first modification of the air intake cover in the fan of the present invention.
  • the air intake cover 3 is an inverted barrel-shaped member, including an annular side wall 30, an opening 35 located at the lower end of the annular side wall 30, and a base plate 34 located at the upper end of the annular side wall 30.
  • the opening 35 is sealed and communicated with
  • the central opening 141 of the air support 14 and the opening 35 cover the air inlet of the fan motor assembly 5, and an air inlet space is formed between the air inlet and the base plate 34.
  • Each muffler hole 311 on the air intake cover 3 is a variable diameter through hole arranged in a direction radiating outward along the rotating shaft of the motor.
  • the opening on the outer wall of the air intake cover 3 is larger than the opening on the inner wall of the air intake cover 3, In order to get a better mute effect.
  • Fig. 9 is a schematic diagram of a second modification of the air intake cover in the fan of the present invention.
  • the air intake cover 3 is a frustum member, including a frustum-shaped annular side wall 30, an opening 35 located at the lower end of the annular side wall 30, and a base plate 34 located at the upper end of the annular side wall 30.
  • the opening 35 covers the air inlet of the fan motor assembly 5, and an air inlet space is formed between the air inlet and the base plate 34.
  • Each muffler hole 312 on the air intake cover 3 is not only a diameter-reducing through hole, the opening on the outer wall of the air intake cover 3 is larger than the opening on the inner wall of the air intake cover 3, and the guide direction of each muffler hole 312 points toward the fan
  • the air inlet of the motor assembly 5 limits the flow of air through the muffler hole 31 to the air inlet of the fan motor assembly 5, so as to obtain a better balance between the air flow rate and the mute effect, and improve the overall performance and humanization of the whole machine Experience.
  • Figure 10 is a cross-sectional view of the fan motor assembly of the present invention.
  • Fig. 11 is a cross-sectional view taken along the line B-B in Fig. 10.
  • Fig. 12 is a partial exploded view of the fan motor assembly in the fan of the present invention.
  • Fig. 13 is a perspective view of the motor cover in the fan of the present invention.
  • Fig. 14 is a schematic diagram of the principle of the fan motor assembly in the fan of the present invention that guides flow to the nozzle.
  • the fan motor assembly 5 in the fan of the present invention includes: an air guide mask 51, an air guide 52, an impeller 53, a motor bracket 54, a motor 56, and a motor cover combined in sequence along a first direction W 58 and the air outlet three-way seat 50 mainly combine the above-mentioned components by positioning the damping pad 55.
  • the air guide mask 51 seals and communicates with the scroll channel 34 of the air intake cover 3 and the air guide 52.
  • the motor bracket 54 and the motor cover 58 jointly form a casing for accommodating the motor 56.
  • the casing is provided with a first guide vane 581 and a second guide vane 582 that respectively guide two air outlets.
  • Each guide vane is inclined to the nearest air outlet, and the angle between the inclined surface of the guide vane and the vertical surface ranges from 10° to 45°.
  • the angle range between the inclined surface of the guide vane and the vertical surface is 20°, so that the wind of the impeller can be guided to the air outlets on both sides, so that the wind is uniform and the noise is reduced.
  • first path 5a and the second path 5b are separated by different guide vanes and the housing. At least part of the first path 5a is formed by the motor bracket 54, the outer surface of the motor cover 58 and the second path of the motor cover 58. A guide vane 581 is jointly defined. At least part of the second path 5b is jointly defined by the motor bracket 54, the outer surface of the housing of the motor cover 58 and the second guide vane 582 of the motor cover 58.
  • the fan motor assembly 5 also includes an air outlet three-way seat 50 located downstream of the casing.
  • the air outlet three-way seat 50 includes an air inlet for receiving air flow, and a first air outlet 504 and a second air outlet 505 respectively communicating with the nozzle 7.
  • the split wall 502 which splits the air flow to the first air outlet 504 and the second air outlet 505 respectively, and the two ends of the nozzle 7 are respectively connected to the first air outlet 504 and the second air outlet 505.
  • the air passing through the first guide vane 581 along the first path 5a is guided to the first air outlet 504 through one side of the flow dividing wall 502, and the air passing through the second guide vane 582 along the second path 5b flows through the dividing wall.
  • the other side of the body 502 is guided to the second air outlet 505.
  • the fan motor assembly 5 also includes an air inlet.
  • the dividing wall 502 is set based on the central axis of the inlet to equally divide the flow area of the air inlet.
  • the two sides of the dividing wall 502 respectively form a symmetrical first guide slope and a second guide slope.
  • the first guide slope guides part of the air flow passing through the air inlet to the first air outlet 504, and the second guide slope guides part of the air flow passing through the air inlet to the second air outlet 505, so as to reduce noise while reducing noise.
  • the inner wall of the air outlet three-way seat 50 is provided with a sunken diversion step 503 extending from the first guide slope to the first air outlet 504.
  • the larger; the inner wall of the air outlet three-way seat 50 is provided with a sunken diversion step 503 extending from the second guide slope to the second air outlet 505, the closer to the second air outlet 505, the sunken diversion step 503
  • the greater the sinking distance is to reduce the noise caused by the turning of the air flow and provide space for the base 6, but it is not limited to this.
  • the heat generated by the motor is discharged along the S direction, diverted through the diverging wall 502 of the air outlet three-way seat 50, and then along the sunken diversion steps to reach the first air outlet 504 and the second air outlet 505, respectively.
  • the air flow generated by the impeller 53 passes through the motor bracket 54, the outer surface of the outer surface of the motor cover 58 and the first guide vane 581, After the second guide vane 582 reaches the first air outlet 504 and the second air outlet 505 respectively, the second part of the air flow does not need to be diverted by the alignment of the dividing wall 502.
  • the S direction is close to the R direction, so that the movement of the air flow along the R direction helps to more efficiently remove the heat generated by the motor 56 between the motor bracket 54 and the motor cover 58 and helps to cool the motor.
  • the present invention effectively reduces noise by dividing the air flow and then turns it separately, and can accelerate the speed of the air flow flowing through the air outlet three-way seat 50 to the nozzle 7.
  • the air outlet three-way seat 50 in the present invention integrates the flow diversion and flow division, which greatly reduces the height of the fan motor assembly 5, so that the overall height and volume of the fan machine are further reduced.
  • An air outlet 583 is provided on the surface of the motor cover 58.
  • Fig. 15 is a perspective view of the nozzle in the fan of the present invention.
  • Fig. 16 is an exploded schematic view of the nozzle in the fan of the present invention.
  • Figure 17 is a partial cross-sectional view of the first type of nozzle in the fan of the present invention.
  • the nozzle 7 of the present invention includes an output air passage 72, a first air inlet 74, a second air inlet 75, an air outlet 71, and at least one positive wind retaining wall 73.
  • the shape of the nozzle 7 is an inverted U shape.
  • the two air inlets of the nozzle 7 are connected to the two sides of the body 10 respectively.
  • the air inlet receives the air flow from the body 10, transmits it to the air outlet 71 through the output air passage 72, and then emits the air flow. Wind angle. As the air flow enters the nozzle 7, the air flow is emitted out of the nozzle 7 after moving at least in a second direction opposite to the first direction.
  • the positive wind retaining wall 73 is arranged on the inner wall of the output air duct 72 and on the same side as the air outlet 71.
  • the positive wind retaining wall 73 is located upstream of the air outlet 71.
  • the plane of the positive wind retaining wall 73 is perpendicular to the guiding direction of the output air duct 72.
  • the wall 73 can correct the air outlet angle and reduce the angle a between the direction of the air jet ejected from the air outlet 71 and the axis of the air outlet 71 to 15°. (If the positive wind retaining wall 73 is not installed, the angle between the direction of the air jet from the air outlet 71 and the axis of the air outlet 71 may exceed 45°. At this time, the fan can only be used as a low-position vertical fan, and cannot be used as a stand. Fan use).
  • a plurality of positive wind retaining walls 73 are sequentially provided in the output air passage 72 along the guiding direction of the output air passage 72. Along the guiding direction of the output air passage 72, the height of the positive wind retaining wall 73 increases successively.
  • the air outlet 71 is provided with a retracted shoulder 77, and the retracted depth of the retracted shoulder 77 is less than the height of the positive wind barrier wall 73, and the retracted depth of the retracted shoulder 77 is 5mm to 12mm.
  • the height of the windshield wall 73 is 15 mm to 25 mm.
  • the retracted depth of the retracted shoulder 77 is 7 mm, and the height of the positive wind retaining wall 73 is 18.5 mm, so as to further reduce the gap between the direction of the air jet ejected from the air outlet 71 and the axis of the air outlet 71.
  • Angle a is
  • Figure 18 is a partial cross-sectional view of the second type of nozzle in the fan of the present invention.
  • Fig. 19 is a schematic diagram of the second type of nozzle in the fan of the present invention to increase the spray angle.
  • Fig. 20 is a schematic diagram of the second type of nozzle in the fan of the present invention at the maximum injection angle.
  • the nozzle 7 of the present invention further includes a rotating member 76 for adjusting the angle between the positive wind retaining wall 73 and the guiding direction of the output air passage 72.
  • the rotating member 76 is disposed on the inner wall of the output air passage 72 and on the same side as the air outlet 71, and the rotating member 76 is connected to the positive wind retaining wall 73.
  • the angle a between the direction of the air jet ejected from the air outlet 71 and the axis of the air outlet 71 decreases (for example, decreases to 15°).
  • the angle a between the direction of the air jet ejected from the air outlet 71 and the axis of the air outlet 71 increases (for example, increases to 45°).
  • the positive wind retaining wall 73 is rotated in the output air passage 72 by the rotating member 76 to adjust the air flow of the positive wind retaining wall 73 to the output air passage 72 on the side close to the air outlet 71, so as to adjust the air outlet angle to be comfortable for the human body. Due to the angle, the fan of the present invention can be applied to two different use scenarios of table fan and vertical fan at the same time.
  • the purpose of the present invention is to provide a fan, which can change the direction of movement of the air flow in the fan, effectively reduce noise, reduce the overall volume, and reduce the cost of use.
  • the above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions.
  • a number of simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

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Abstract

一种风扇，包括：体部(10)，包括空气入口、空气出口、进气罩(3)以及用于产生空气流的风扇电机组件(5)，进气罩(3)设置于所述空气入口的下游并位于风扇电机组件(5)的进气口的上游，进气罩(3)设有消音孔(31)，空气流经过消音孔(31)之后，沿第一方向通过体部(10)；以及喷嘴(7)，连接空气出口，用于接收来自体部(10)的空气流并发射空气流，随空气流进入喷嘴(7)，空气流至少基于与第一方向反向的第二方向运动后被发射出喷嘴(7)。这种风扇能够改变了风扇内空气流的运动方向，有效降低噪音，降低了风扇的整体高度，缩小了整体体积，延长了滤网使用寿命，降低使用噪音和使用成本。

Description

风扇 技术领域
本发明涉及空气调节设备领域，具体地说，涉及风扇。
背景技术
随着生活和科技水平的不断提高，人民对生活品质的要求日益提高，室内空气质量成为人们关心的重要问题。尤其是近几年的雾霾、PM2.5问题的出现，人们对空气净化器的需求量也越来越大。
空气净化器是用来净化室内空气的小型家电产品，主要解决由于装修或者其他原因导致的室内空气污染问题。由于室内空气中污染物的释放有持久性和不确定性的特点，因此使用空气净化器净化室内空气是国际公认的改善室内空气质量的方法。空气净化器中有多种不同的技术和介质，使它能够向用户提供清洁和安全的空气。常用的空气净化技术有：低温非对称等离子体空气净化技术、吸附技术、负离子技术、负氧离子技术、分子络合技术、纳米TiO2技术、HEPA高效过滤技术、静电集尘技术、活性氧技术等；材料技术主要有：光触媒、活性炭、合成纤维、HEPA高效材料等，高质量的滤网成本会占到空气净化器总成本的20％到30％。
目前，已经出现了较多的带有空气滤网的无叶风扇。图1为现有技术的无叶风扇的剖面图。如图1所示，其中大部分的具有环形喷嘴901、外壳903、底座904、滤网905、风扇电机906以及网孔内胆907。其中，具有进风网孔的外壳903设置在底座904上，外壳903内设有滤网905，滤网905内设有网孔内胆907，网孔内胆907中设有风扇电机906的第一空气入口，环形喷嘴901都设置于风扇电机906的重力方向的上方，风扇电机906的出风口连通喷嘴901。室内空气依次经过外壳903的网孔、滤网905的过滤后进入网孔内胆907，风扇电机906的进风口沿反重力方向吸入空气后继续沿反重力方向(垂直向上)输送到环形喷嘴901的一端，然后空气散布到环形喷嘴901的各处后，被喷射出去。
在该结构中至少存在以下技术问题有待改进：
(1)由于无叶风扇总体积最大的环形喷嘴和风扇电机都必须排列于重力方向 的不同高度位置，造成了无叶风扇的整体高度难以降低，大大限制了无叶风扇的使用场景。
(2)环形喷嘴的中间是中空的，该区域没有被充分利用，造成了风扇整体体积的浪费，以及对于产品运输和产品仓储的成本增加。
(3)由于风扇电机的进风口位置较低，会更容易在吸气时将地面的灰尘吸入，加大了滤网的使用负荷，需要更频繁地更换滤网，明显增大了无叶风扇的使用成本。
(4)这类无叶风扇的外壳是两个壳体水平对合的结构，每个壳体内各设有一片滤网。滤网通过设置在下游的立体密封胶条与网孔内胆之间进行密封，立体密封胶条的成本极高，而且长时间使用后密封效果差。
(5)在更换滤网时，就需要分别拆卸出两个壳体各自更换滤网后再安装回去，过程繁琐，人性化体验较差。
(6)产品难以增加其他功能模块，扩展性差。
发明内容
针对现有技术中的问题，本发明的目的在于提供风扇，克服了现有技术的缺陷，能够改变了风扇内空气流的运动方向，降低了风扇的整体高度，缩小了整体体积，延长了滤网使用寿命，降低使用噪音和使用成本。
本发明的实施例提供一种风扇，包括：
体部，包括空气入口、空气出口、进气罩以及用于产生空气流的风扇电机组件，所述进气罩设置于所述空气入口的下游并位于所述风扇电机组件的进气口的上游，所述进气罩设有消音孔，所述空气流经过所述消音孔之后，沿第一方向通过所述体部；以及
喷嘴，连接所述空气出口，用于接收来自体部的空气流并发射所述空气流，随所述空气流进入所述喷嘴，所述空气流至少基于与所述第一方向反向的第二方向运动后被发射出所述喷嘴。
在一些实施例中，所述消音孔在所述进气罩表面阵列排列形成消音孔阵列，所述消音孔阵列环绕所述进气罩。
在一些实施例中，所述消音孔为变径通孔，每个所述消音孔位于所述进气罩的外壁的开口直径为2.5mm至4mm，位于所述进气罩的内壁的开口直径为1mm至 2.5mm。
在一些实施例中，所述风扇电机组件的进气口的流通截面积为S 1，所有所述消音孔的流通截面积的总和为S 2，S 2≥S 1。
在一些实施例中，所述进气罩为一倒置桶状件，包括环形侧壁、位于所述环形侧壁第一端的开口部和位于所述环形侧壁第二端的基板，所述开口部罩盖于所述风扇电机组件的进气口，所述进气口与所述基板之间形成进风空间。
在一些实施例中，所述体部还包括过滤器，所述过滤器为一管状空气滤网，所述过滤器环绕所述进气罩，所述过滤器设置于所述进气罩的消音孔的上游。
在一些实施例中，所述风扇还包括沿所述第一方向压接所述管状空气滤网的第一侧的顶盖，所述顶盖与所述体部旋转卡合，所述基板支撑所述顶盖。
在一些实施例中，所述顶盖压接所述管状空气滤网的一侧设有限位件，所述基板设有圆形限位槽，引导所述限位件在所述圆形限位槽的范围内转动，随所述限位件的旋转，所述顶盖与所述体部卡合或分离。
在一些实施例中，还包括沿所述第二方向支撑所述管状空气滤网第二侧的进气支架，所述管状空气滤网的环形上端面以及所述进气罩的基板均与顶盖密封，所述管状空气滤网的环形下端面以及所述进气罩的开口部与所述进气支架之间密封。
在一些实施例中，至少部分所述消音孔的导流方向指向所述风扇电机组件的进气口，限定经过所述消音孔的空气流向所述风扇电机组件的进气口汇集。
在一些实施例中，S 2≥2.5S 1。
在一些实施例中，所述第一方向为重力方向，所述第二方向为反重力方向。
在一些实施例中，所述消音孔位于所述进气罩的外壁的开口直径为2.8mm至3.0mm，位于所述进气罩的内壁的开口直径为2.5mm
本发明的风扇，能够改变了风扇内空气流的运动方向，有效降低噪音，缩小了整体体积，降低了使用成本。
附图说明
通过阅读参照以下附图对非限制性实施例所作的详细描述，本发明的其它特征、目的和优点将会变得更明显。
图1为现有技术的无叶风扇的剖面图。
图2为本发明一实施例的风扇的内部风道示意图。
图3为本发明一实施例的风扇的立体图。
图4是图3中A-A向的剖视图。
图5为本发明一实施例的风扇的分解图。
图6为本发明一实施例的风扇中的进气罩与进气支架组合的示意图。
图7为本发明一实施例的风扇中的进气罩与进气支架分离的示意图。
图8为本发明一实施例的风扇中的进气罩的第一种变形例的示意图。
图9为本发明一实施例的风扇中的进气罩的第二种变形例的示意图。
图10为本发明一实施例的风扇电机组件的剖面图。
图11是图10中B-B向的剖视图。
图12为本发明一实施例的风扇中风扇电机组件的局部分解图。
图13为本发明一实施例的风扇中马达罩的立体图。
图14为本发明一实施例的风扇中风扇电机组件向喷嘴导流原理示意图。
图15为本发明一实施例的风扇中喷嘴的立体图。
图16为本发明一实施例的风扇中喷嘴的分解示意图。
图17为本发明一实施例的风扇中第一种喷嘴的局部剖视图。
图18为本发明一实施例的风扇中第二种喷嘴的局部剖视图。
图19为本发明一实施例的风扇中第二种喷嘴增大喷射夹角的原理图。
图20为本发明一实施例的风扇中第二种喷嘴处于最大喷射夹角的原理图。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式。相反，提供这些实施方式使得本发明将全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。在图中相同的附图标记表示相同或类似的结构，因而将省略对它们的重复描述。
图2为本发明的风扇的内部风道示意图。如图2所示，本发明的风扇，包括用于产生空气流的体部10和喷射空气流的喷嘴7。其中，体部10至少包括了顶盖11、过滤器2、提供空气入口的进气罩3、用于产生空气流的风扇电机组件5、提供空气出口的外壳8。外壳8的两侧设有进气孔，过滤器2设置于外壳8中进气孔内侧的 对应位置。过滤器2设置于进气罩3的上游，过滤器2环绕进气罩3。进气罩3设置于风扇电机组件5的进风口。风扇电机组件5使得空气流沿第一方向W通过体部10，第一方向W为重力方向。喷嘴7连接空气出口，用于接收来自体部10的空气流并发射空气流，随空气流进入喷嘴7，空气流至少基于与第一方向W反向的第二方向X运动后被发射出喷嘴7，第二方向X为反重力方向。空气入口设置于进气罩3，进气罩3位于体部10的沿重力方向的上部。空气出口位于体部10的外壳8的两侧沿重力方向的下部，风扇电机组件5位于空气入口与空气出口位之间的区域。喷嘴7具有至少一输出气道72，输出气道72的延展方向与第一方向W平行，空气流沿第二方向X通过输出气道72。本发明的风扇通过与现有技术完全不同的风道设计，将风扇电机组件5的吸气方向倒置，从体部10的上部进行高吸气，空气流自上而下经过风扇电机组件5后，从体部10的下部排气进入到喷嘴7，空气流再由喷嘴7自下而上流动后，可以从喷嘴7的不同高度的出风口71喷射出去。本发明将风扇电机组件5的位置布局与喷嘴7的位置布局在第一方向上重叠，进一步减小了整体高度，并充分利用喷嘴7中央的闲置空间。并且，在相等高度的前提下，本发明能够实现更大的喷嘴7，加强送风能力。
在一个变形例中，喷嘴7可以是设置于体部10一侧的沿垂直方向延展的管状件，管状件的下段可转动地连接体部10的开口，但不以此为限。
本发明中的喷嘴7和风扇电机组件5可以沿第一方向W(或第二方向X)平行排列，并且，喷嘴7和风扇电机组件5各自基于同一铅垂面的投影至少部分重叠。这使得喷嘴7的出风口71可以设置在与风扇电机组件5同水平的高度，甚至是低于风扇电机组件5的水平的高度。本发明通过对风道的改进，将现有技术中空气流沿单一方向先后经过风扇电机组件和喷嘴的长距离空气流行程分为了至少两段方向相反的短距离空气流行程，两段短距离空气流行程可以相互平行，从而突破了在高度方向上风扇电机组件和喷嘴必须依次排列的行业技术壁垒，使得风扇的整体高度能够大大地减小，也降低了产品的重心，提高了产品站立姿态的稳定性。并且位于上方位置的进风口在吸气时不会将地面的灰尘吸入，减小了滤网的使用负荷，无需频繁地更换滤网，大大减小了无叶风扇滤网的使用成本。
风扇电机组件5的出风口连接两引导气道，引导气道分别连通到体部10两侧的开口，喷嘴7具有一半框型的喷嘴本体70，喷嘴本体70跨接于体部10朝向第一 方向W的第一侧面，且喷嘴本体70的两端分别连通开口。体部10具有至少一改变空气流的流向的引导气道，引导气道沿垂直于第一方向W的第三方向Y延展，分别联通风扇电机组件5的出风口和喷嘴7。本实施例中，风扇电机组件5、引导气道与喷嘴7共同形成至少一U型组合气道，但不以此为限。本实施例中的喷嘴本体70的形状为倒U型，且喷嘴本体70可以基于体部10的开口的轴线为旋转轴，相对于体部10进行一定角度的旋转，以便向不同方向吹风。在旋转后，虽然沿喷嘴本体70流动的空气流是斜向流动(基于铅垂面)，但是随着空气流向喷嘴本体70的深处进入，空气流依然会产生向第二方向X(反重力方向)的位移。喷嘴本体70设有至少一沿第四方向Z开口的出风孔71，第四方向Z垂直于第一方向W与第三方向Y共同构成的平面。喷嘴本体70的出风孔71组合形成倒U型风道，体部10的空气入口位于倒U型风道的范围内。
在一个优选例中，喷嘴本体70具有跨接于体部10朝向第一方向的第一侧面的第一状态，以及基于开口转动后，喷嘴本体70回避过滤器2基于第二方向投影区域的第二状态，过滤器2具有基于喷嘴本体70的第二状态沿第二方向避开喷嘴本体70以进出体部10的升降行程。过滤器2的升降行程基于第二方向的投影与喷嘴本体70的第二状态基于第二方向的投影不重叠，以便能够将过滤器2沿第二方向X拆卸后移除体部10，但不以此为限。
在一个优选例中，容置空间具有两个供过滤器2进出容置空间的更换通道(U型的喷嘴本体70天然具有两个联通内部容置空间的超大开口)，更换通道的延展方向垂直于第二方向，过滤器2具有沿第二方向自体部10进出容置空间的第一行程，以及自更换通道进出容置空间的第二行程。容置空间的高度与更换通道的高度J均大于过滤器2的高度K，容置空间的宽度与更换通道的宽度均大于过滤器2的宽度。
图3为本发明的风扇的立体图。图4是图3中A-A向的剖视图。图5为本发明的风扇的分解图。如图3至5所示，本发明的一个优选实施例中，本发明的风扇的体部包括沿第二方向X自下而上设置的底座6、用于产生空气流的风扇电机组件5、进气支架14、提供空气入口的进气罩3、过滤器2以及顶盖11。本发明通过充分利用现有技术中空闲的喷嘴7的中央区域，将体部10整体设置于喷嘴7的中央区域中，体部10的空气入口位于倒U型风道的范围内，使得产品的体积大大减小， 降低了产品运输和产品仓储的成本。
两个能够相互对合的内壳4卡合风扇电机组件5和底座6的两侧，内壳4对合螺接后将风扇电机组件5限位于底座6上方，两内壳4对合后形成一环形槽。喷嘴本体70两端的内侧分别设置第一进风口74和第二进风口75，第一进风口74和第二进风口75各自联通体部10两侧的一个开口。
两个能够相互对合的外壳8卡合于内壳4的外周，外壳8罩盖进气罩3和风扇电机组件5，每个外壳8的对应进气罩3的区域设有网孔状的进气孔。
过滤器2环绕进气罩3，过滤器2设置于进气罩3的空气入口的上游。过滤器2为一管状空气滤网23，管状空气滤网23的第一侧设有固定第一环形密封件21的第一环形支撑架22，顶盖11的下表面设有插槽，顶盖11的插槽与第一环形支撑架22可拆卸地卡合。管状空气滤网23的介质可以是现有的空气过滤材料或是未来发明的空气过滤材料，不以此为限。
图6为本发明的风扇中的进气罩与进气支架组合的示意图。图7为本发明的风扇中的进气罩与进气支架分离的示意图。如图6和7所示，本实施例中的进气罩3设置于空气入口的下游并位于风扇电机组件5的进气口的上游，进气罩3设有消音孔31，空气流经过消音孔31之后，沿第一方向通过体部10。消音孔31在进气罩3表面阵列排列形成消音孔31阵列，消音孔31阵列环绕进气罩3。消音孔31为变径通孔，每个消音孔31在外壁的开孔面积大于内壁的开孔面积，每个消音孔31位于进气罩3的外壁的开口直径为2.5mm至4mm，位于进气罩3的内壁的开口直径为1mm至2.5mm。在一个优选方案中，消音孔31位于进气罩3的外壁的开口直径为2.8mm至3.0mm，位于进气罩3的内壁的开口直径为2.5mm，使得每个消音孔31都具有更好的消音降噪功能，以便获得更好的整机静音效果。
为了在进气量以及音量之间获得最优效果，风扇电机组件5的进气口的流通截面积为S 1，所有消音孔31的流通截面积的总和为S 2，S 2≥S 1。在一个优选方案中，所有消音孔31的流通截面积的总和为S 2大于等于2.5倍的进气口的流通截面积S 1，从而进一步保证更好的静音效果。
而且，顶盖11与体部10旋转卡合，基板34支撑顶盖11，顶盖11压接管状空气滤网的一侧设有限位件，基板34设有圆形限位槽32，引导限位件在圆形限位槽32的范围内转动，随限位件的旋转，顶盖11与体部10卡合或分离。进气支架 14沿第二方向支撑管状空气滤网第二侧，管状空气滤网23的环形上端面以及进气罩3的基板34均与顶盖11密封，管状空气滤网23的环形下端面以及进气罩3的开口部35与进气支架14之间密封。进气罩3提供了对于顶盖11的支撑和旋转引导作用，加强了产品的整体强度和特殊的更换滤网的功能性，本发明的风扇通过旋转打开顶盖11后替换新的管状空气滤网23。
进气支架14设有环绕中央开口141的多个第一卡扣142和排列于第一卡扣142之外的多个第二卡扣143。进气罩3的开口部35的卡口与进气支架14的第一卡扣142扣合，两片侧支撑架13的下表面连接于进气支架14的第二卡扣143，外壳8的高度大于风扇电机组件5的高度，合围后的外壳8的上部两片侧支撑架13之间提了容置过滤器2和进气罩3的空间。进气支架14的下表面设有连接柱，进气罩3连接于进气支架14的上表面，使得进气罩3可以通过进气支架14连接于风扇电机组件5的进风口处。12为环形连接架。
为了增强气流流速和静音效果，本发明的可以采用以下结构的进气罩3：
图8为本发明的风扇中的进气罩的第一种变形例的示意图。如图8所示，进气罩3为一倒置桶状件，包括环形侧壁30、位于环形侧壁30下端的开口部35和位于环形侧壁30上端的基板34，开口部35密封连通进气支架14的中央开口141且开口部35罩盖于风扇电机组件5的进气口，进气口与基板34之间形成进风空间。进气罩3上的每个消音孔311都是沿电机旋转轴向向外放射的方向设置的变径通孔，位于进气罩3的外壁的开口大于位于进气罩3的内壁的开口，以便获得更好的静音效果。
图9为本发明的风扇中的进气罩的第二种变形例的示意图。如图9所示，进气罩3为一锥台件，包括锥台型的环形侧壁30、位于环形侧壁30的下端的开口部35和位于环形侧壁30上端的基板34，开口部35罩盖于风扇电机组件5的进气口，进气口与基板34之间形成进风空间。进气罩3上的每个消音孔312不但是变径通孔，位于进气罩3的外壁的开口大于位于进气罩3的内壁的开口，而且每个消音孔312的导流方向指向风扇电机组件5的进气口，限定经过消音孔31的空气流向风扇电机组件5的进气口汇集，以便在气流流速和静音效果之间获得更好的平衡，提高整机的综合性能和人性化体验。
图10为本发明的风扇电机组件的剖面图。图11是图10中B-B向的剖视图。 图12为本发明的风扇中风扇电机组件的局部分解图。图13为本发明的风扇中马达罩的立体图。图14为本发明的风扇中风扇电机组件向喷嘴导流原理示意图。如图10至14所示，本发明的风扇中的风扇电机组件5包括：沿第一方向W依次组合的导风口罩51、导风罩52、叶轮53、马达支架54、马达56、马达罩58以及出风三通座50，主要通过定位减振垫55将上述部件组合。导风口罩51密封连通进气罩3的涡旋通道34和导风罩52。马达支架54和马达罩58共同形成容置马达56的机壳，机壳设有分别向两个空气出口导流的第一导流叶片581、第二导流叶片582，叶轮产生的部分空气流经过第一导流叶片581引导后沿第一路径5a被就近输送到第一出风口504，叶轮产生的其余部分空气流经过第二导流叶片582引导后沿第二路径5b被就近输送到第二出风口505。
每个导流叶片向就近的空气出口倾斜，导流叶片的倾斜面与铅垂面之间的夹角范围是10°至45°。在一个优选例中，根据马达罩58的圆周具有等分镜像倾斜的导流叶片，导流叶片分别在四个象限等分镜像分布。导流叶片的倾斜面与铅垂面之间的夹角范围是20°，以便能将叶轮的风导向两侧的出风口，使得出风均匀，降低噪音。
本实施例中，通过不同的导流叶片配合外壳分隔出第一路径5a和第二路径5b，至少部分第一路径5a由马达支架54、马达罩58的外壳的外表面与马达罩58的第一导流叶片581共同限定。至少部分第二路径5b由马达支架54、马达罩58的外壳的外表面与马达罩58的第二导流叶片582共同限定。
风扇电机组件5还包括一位于机壳下游的出风三通座50，出风三通座50包括接收空气流的进风口、分别联通喷嘴7的第一出风口504和第二出风口505，以及将空气流分流后各自引导到第一出风口504和第二出风口505的分流墙体502，喷嘴7的两端分别连通第一出风口504和第二出风口505。沿第一路径5a经过第一导流叶片581的空气流经分流墙体502的一侧被引导到第一出风口504，沿第二路径5b经过第二导流叶片582的空气流经分流墙体502的另一侧被引导到第二出风口505。风扇电机组件5还包括一进风口，分流墙体502基于进风口的中轴线设置，均分进风口流通面积，分流墙体502的两侧分别形成对称的第一引导斜坡和第二引导斜坡，第一引导斜坡将部分经过进风口的空气流引导至第一出风口504，第二引导斜坡将部分经过进风口的空气流引导至第二出风口505，以便能在降低噪音的前 提下，将将经过进风口的空气流分流。出风三通座50的内壁设有自第一引导斜坡向第一出风口504延展的下沉式导流台阶503，越靠近第一出风口504，下沉式导流台阶503的下沉距离越大；出风三通座50的内壁设有自第二引导斜坡向第二出风口505延展的下沉式导流台阶503，越靠近第二出风口505，下沉式导流台阶503的下沉距离越大以便减小空气流转向是的噪音，并为底座6提供空间，但不以此为限。
马达产生的热量经过沿着S方向被排放，经由出风三通座50的分流墙体502分流后分别顺着下沉式导流台阶到达第一出风口504和第二出风口505。由叶轮53生成的空气流，沿着R方向(图13、14中点划线箭头方向)先后经过马达支架54、马达罩58的外壳的外表面与马达罩58的第一导流叶片581、第二导流叶片582后分别达到第一出风口504和第二出风口505，第二部分空气流不需要经过分流墙体502的对齐进行转向。本是实施例中，S方向与R方向相近，使得空气流沿着R方向的运动有助于更高效地带出马达支架54、马达罩58之间马达56产生的热量，有助于冷却马达。本发明通过将空气流分流后分别转向，有效降低了噪音，并能加快空气流经过出风三通座50流向喷嘴7的速度。本发明中的出风三通座50将导流与分流和一体化，大大降低了风扇电机组件5的高度，使得风扇整机的总高度和体积也进一步减小。马达罩58表面设置有出气孔583。
图15为本发明的风扇中喷嘴的立体图。图16为本发明的风扇中喷嘴的分解示意图。图17为本发明的风扇中第一种喷嘴的局部剖视图。如图15至20所示，本发明的喷嘴7包括输出气道72、第一进风口74、第二进风口75、出风口71以及至少一正风挡墙73，喷嘴7的形状为倒U型，喷嘴7的两个进风口分别连通体部10的两侧。进风口接收来自体部10的空气流，经输出气道72传输到出风口71后发射空气流，正风挡墙73阻挡流向出风口71的部分空气流，调节空气流喷射出出风口71的出风角度。随空气流进入喷嘴7，空气流至少基于与第一方向反向的第二方向运动后被发射出喷嘴7。正风挡墙73设置于输出气道72的内壁且与出风口71同侧，正风挡墙73位于出风口71的上游，正风挡墙73所处平面与输出气道72的引导方向垂直，正风挡墙73可以将出风角度导正，减小空气流喷射出出风口71的出风方向与出风口71的轴线的夹角a为15°。(如果不设置正风挡墙73，空气流喷射出出风口71的出风方向与出风口71的轴线的夹角可能超过为45°，此时风扇 只能作为低位的立扇使用，无法作为台扇使用)。
在一个优选实施例中，在输出气道72内沿输出气道72的引导方向依次设有多道正风挡墙73。沿输出气道72的引导方向，正风挡墙73的高度依次增大。
在一个优选实施例中，出风口71设有内缩肩台77，内缩肩台77的内缩深度小于正风挡墙73的高度，内缩肩台77的内缩深度为5mm至12mm，正风挡墙73的高度为15mm至25mm。本实施例中，内缩肩台77的内缩深度为7mm，正风挡墙73的高度为18.5mm，以便进一步减小空气流喷射出出风口71的出风方向与出风口71的轴线的夹角a。
图18为本发明的风扇中第二种喷嘴的局部剖视图。图19为本发明的风扇中第二种喷嘴增大喷射夹角的原理图。图20为本发明的风扇中第二种喷嘴处于最大喷射夹角的原理图。如图18至20所示，本发明的喷嘴7还包括调节正风挡墙73与输出气道72的引导方向之间角度的旋转件76。旋转件76设置于输出气道72的内壁且与出风口71同侧，旋转件76连接正风挡墙73。随正风挡墙73阻挡更多空气流，空气流喷射出出风口71的出风方向与出风口71的轴线的夹角a减小(例如：减小到15°)。对比图19至20，随正风挡墙73阻挡更少空气流，空气流喷射出出风口71的出风方向与出风口71的轴线的夹角a增大(例如：增大到45°)。本发明通过旋转件76在输出气道72中旋转正风挡墙73，来调节正风挡墙73对于靠近出风口71侧的输出气道72的空气流，从而实现使得出风角度调整到适合人体舒适的角度，使得本发明的风扇可以同时应用于台扇和立扇两种不同使用场景。
综上，本发明的目的在于提供风扇，能够改变了风扇内空气流的运动方向，有效降低噪音，缩小了整体体积，降低了使用成本。以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。

Claims (10)

  1. 一种风扇，其特征在于，包括：
    体部，包括空气入口、空气出口、进气罩以及用于产生空气流的风扇电机组件，所述进气罩设置于所述空气入口的下游并位于所述风扇电机组件的进气口的上游，所述进气罩设有消音孔，所述空气流经过所述消音孔之后，沿第一方向通过所述体部；以及
    喷嘴，连接所述空气出口，用于接收来自体部的空气流并发射所述空气流，随所述空气流进入所述喷嘴，所述空气流至少基于与所述第一方向反向的第二方向运动后被发射出所述喷嘴。
  2. 如权利要求1所述的风扇，其特征在于，所述消音孔在所述进气罩表面阵列排列形成消音孔阵列，所述消音孔阵列环绕所述进气罩。
  3. 如权利要求2所述的风扇，其特征在于，所述消音孔为变径通孔，每个所述消音孔位于所述进气罩的外壁的开口直径为2.5mm至4mm，位于所述进气罩的内壁的开口直径为1mm至2.5mm。
  4. 如权利要求2所述的风扇，其特征在于，所述风扇电机组件的进气口的流通截面积为S 1，所有所述消音孔的流通截面积的总和为S 2，S 2≥S 1。
  5. 如权利要求1至3中任意一项所述的风扇，其特征在于，所述进气罩为一倒置桶状件，包括环形侧壁、位于所述环形侧壁第一端的开口部和位于所述环形侧壁第二端的基板，所述开口部罩盖于所述风扇电机组件的进气口，所述进气口与所述基板之间形成进风空间。
  6. 如权利要求5所述的风扇，其特征在于，所述体部还包括过滤器，所述过滤器为一管状空气滤网，所述过滤器环绕所述进气罩，所述过滤器设置于所述进气罩的消音孔的上游。
  7. 如权利要求6所述的风扇，其特征在于，所述风扇还包括沿所述第一方向压接所述管状空气滤网的第一侧的顶盖，所述顶盖与所述体部旋转卡合，所述基板支撑所述顶盖。
  8. 如权利要求7所述的风扇，其特征在于，所述顶盖压接所述管状空气滤网的一侧设有限位件，所述基板设有圆形限位槽，引导所述限位件在所述圆形限位槽的范围内转动，随所述限位件的旋转，所述顶盖与所述体部卡合或分离。
  9. 如权利要求8所述的风扇，其特征在于，还包括沿所述第二方向支撑所述管状空气滤网第二侧的进气支架，所述管状空气滤网的环形上端面以及所述进气罩的基板均与顶盖密封，所述管状空气滤网的环形下端面以及所述进气罩的开口部与所述进气支架之间密封。
  10. 如权利要求1所述的风扇，其特征在于，至少部分所述消音孔的导流方向指向所述风扇电机组件的进气口，限定经过所述消音孔的空气流向所述风扇电机组件的进气口汇集。
PCT/CN2021/075266 2020-02-19 2021-02-04 风扇 WO2021164565A1 (zh)

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