EP3872352A1 - Axial-flow impeller - Google Patents
Axial-flow impeller Download PDFInfo
- Publication number
- EP3872352A1 EP3872352A1 EP20816374.1A EP20816374A EP3872352A1 EP 3872352 A1 EP3872352 A1 EP 3872352A1 EP 20816374 A EP20816374 A EP 20816374A EP 3872352 A1 EP3872352 A1 EP 3872352A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- disposed
- convex portions
- edge
- axial flow
- blades
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 239000000428 dust Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
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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
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/10—Two-dimensional
- F05D2250/18—Two-dimensional patterned
- F05D2250/182—Two-dimensional patterned crenellated, notched
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/10—Two-dimensional
- F05D2250/18—Two-dimensional patterned
- F05D2250/183—Two-dimensional patterned zigzag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/10—Two-dimensional
- F05D2250/18—Two-dimensional patterned
- F05D2250/184—Two-dimensional patterned sinusoidal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/70—Shape
- F05D2250/71—Shape curved
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/02—Transport and handling during maintenance and repair
Definitions
- the present application relates to the technical field of axial flow fans, for example, to an axial flow impeller.
- Fans are widely applied in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings for ventilation, dust removal and cooling purposes, and are also used in air conditioning equipment and household appliances for cooling and ventilation purposes.
- Fans are machinery used for transporting gas. From the energy viewpoint, they are machines for converting mechanical energy of a prime mover into energy of the gas.
- fans may be divided into centrifugal fans, axial flow fans, diagonal flow fans, and cross-flow fans.
- a power machine drives an impeller to rotate in a cylindrical housing. Gas enters from a current collector, gains energy through the impeller thus having increased pressure and speed, and then is discharged axially.
- the impeller is the main component of the fan, and its geometrical shape, size, number of blades and manufacturing accuracy have a great impact on the performance of the fan.
- An impeller made by cold pressing aluminum alloy is typically used in the structural design and production of the axial flow fan. Such impellers however have low efficiency, high energy consumption and loud noise during operation of the fan.
- impellers are susceptible to deformation during transportation and use due to stack instability and are practically irreparable once deformation occurs.
- a same structure of plastic material may be used for replacement, the problems of low efficiency and loud noise are still not solved.
- the present application provides an axial flow impeller, which can solve the problems of loud noise and stack instability during transportation.
- An axial flow impeller provided by an embodiment includes a central hub and a plurality of blades.
- the central hub includes a base plate and a stacking sidewall.
- the stacking sidewall is disposed at an edge of the base plate, a plurality of first convex portions are disposed at a first edge of the stacking sidewall extending axially, a first concave portion is disposed between adjacent two of the plurality of first convex portions, a plurality of second convex portions are disposed at a second edge of the stacking sidewall extending in the axial direction, a second concave portion is disposed between adjacent two of the plurality of second convex portions, the plurality of first convex portions are in one-to-one correspondence with second concave portions in the axial direction, and first concave portions are in one-to-one correspondence with the plurality of second convex portions in the axial direction.
- the plurality of blades are disposed along an external surface of the stacking sidewall, and an edge of each of the plurality of blades connecting to the stacking sidewall extends from an edge of one of the plurality of first convex portions to an edge of an adjacent second convex portion.
- connection to each other is to be construed in a broad sense, for example, as securely connected, detachably connected, or integrated; mechanically connected or electrically connected; directly connected to each other or indirectly connected to each other via an intermediary; or internally connected between two elements or interactional relations between two elements.
- connection is to be construed in a broad sense, for example, as securely connected, detachably connected, or integrated; mechanically connected or electrically connected; directly connected to each other or indirectly connected to each other via an intermediary; or internally connected between two elements or interactional relations between two elements.
- first feature and the second feature may be in direct contact or be in contact via another feature between the two features instead of being in direct contact.
- first feature is described as “on”, “above” or “over” the second feature, the first feature is right on, above or over the second feature or the first feature is obliquely on, above or over the second feature, or the first feature is simply at a higher level than the second feature.
- the first feature When the first feature is described as “under”, “below” or “underneath” the second feature, the first feature is right under, below or underneath the second feature or the first feature is obliquely under, below or underneath the second feature, or the first feature is simply at a lower level than the second feature.
- orientations or position relations indicated by terms such as “above”, “below”, “left”, “right”, “vertical”, “horizontal”, “inside”, “outside” and the like are based on orientations or position relations shown in the drawings. These orientations or position relations are intended only to facilitate and simplify description of the present application, and not to indicate or imply that a device or element referred to must have such specific orientations or must be configured or operated in such specific orientations. Thus, these orientations or position relations are not to be construed as limiting the present application.
- the terms “first” and “second” are used only to distinguish between descriptions and have no special meaning.
- the present application provides an axial flow impeller, which may be used on a fan.
- the axial flow impeller includes a central hub 1 and a plurality of blades 2, and the plurality of blades 2 are disposed along a circumferential direction of the central hub 1.
- the central hub 1 includes a base plate 11 and a stacking sidewall 12.
- the stacking sidewall 12 is disposed at an edge of the base plate 11, a plurality of first convex portions 121 are disposed at a first edge of the stacking sidewall 12 extending axially, a first concave portion 122 is disposed between adjacent two of the plurality of first convex portions 121, a plurality of second convex portions 123 are disposed at a second edge of the stacking sidewall 12 extending in the axial direction, a second concave portion 124 is disposed between adjacent two of the plurality of second convex portions 123, the plurality of first convex portions 121 are in one-to-one correspondence with second concave portions 124 in the axial direction, and first concave portions 122 are in one-to-one correspondence with the plurality of second convex portions 123 in the axial direction.
- the central hub 1 is provided with a stacking sidewall 12 for stacking, a first edge of the stacking sidewall 12 extending in the axial direction can be axially engaged with a second edge of another stacking sidewall 12 extending in the axial direction, so that a stacking effect of two axial flow impellers is optimized, simultaneously, the weight of a single axial flow impeller is effectively reduced by 20%, and the transportation cost is reduced.
- the plurality of blades 2 are disposed along an external surface of the stacking sidewall 12, and an edge of each of the plurality of blades 2 connecting to the stacking sidewall 12 extends from an edge of one of the plurality of first convex portions 121 to an edge of an adjacent second convex portion 123.
- the edge of each of the plurality of blades 2 connecting to the stacking sidewall 12 is limited between the first edge and second edge of the stacking sidewall 12, so that the plurality of blades 2 of an upper axial flow impeller do not interfere with the plurality of blades 2 of a lower axial flow impeller and the axial flow impellers are stacked better.
- the base plate 11 includes a mounting portion 111 and an annular portion 112 disposed at an periphery of the mounting portion 111, the mounting portion 111 is provided with a mounting hole 1111, and a front surface of the annular portion 112 and a rear surface of the annular portion 112 are provided with support ribs.
- the mounting portion 111 is provided with a mounting hole 1111 to mount the axial flow impeller on a main body of the fan, and the annular portion 112 is provided with support ribs to improve the strength of the axial flow impeller.
- the support ribs include a first support rib group 113 disposed on the front surface of the annular portion 112 and a second support rib group 114 disposed on the rear surface of the annular portion 112, and the first support rib group 113 and the second support rib group 114 are different in shape.
- the first support rib group 113 and the second support rib group 114 respectively disposed on two surfaces of two sides of the annular portion 112 can improve the strength of the axial flow impeller, and the first support rib group 113 and the second support rib group 114 are of different shapes, so that the mounting surface of the axial flow impeller can be easily distinguished.
- a plurality of first support ribs of the first support rib group 113 extend in a rotational direction, and heights of the plurality of first support ribs extending in the axial direction gradually increase from a first end close to the mounting portion 111 to a second end away from the mounting portion 111.
- the first support rib group 113 When the axial flow impeller rotates, the first support rib group 113 will generate centrifugal airflow, the efficiency of the airflow passing through the plurality of blades 2 is optimized, so that the effects of energy conservation and emission reduction are achieved, dust accumulated on the plurality of blades 2 can be taken away, the load increase caused by the accumulated dust is reduced, and the accumulation of dust and condensed water can be effectively prevented.
- a plurality of second support ribs of the second support rib group 114 extend in a radial direction of the central hub 1, and heights of the plurality of second support ribs extending in the axial direction gradually increase from a first end close to the mounting portion 111 to a second end away from the mounting portion 111.
- the second supporting ribs are linear, the first supporting ribs are curved, and the shapes of the second supporting ribs and the first supporting ribs are different, so that the installation surfaces for air suction and for air blowing of the axial flow impeller can be conveniently distinguished.
- a plurality of convex ribs 21 parallel to each other are disposed at a first end of each of the plurality of blades 2 close to the central hub 1, and an angle is formed between an arrangement direction of the plurality of convex ribs 21 and the radial direction of the central hub 1.
- the roots of the blades 2 are optimized, and the strength of the edges of the plurality of blades 2 with thin walls is increased.
- the length of the convex ribs 21 closer to the central hub 1 is smaller, that is, the convex ribs 21 parallel to each other gradually increase in a direction away from the central hub 1.
- the plurality of convex ribs 21 and the second support rib group 114 are disposed on a same surface of each of the plurality of blades 2. At this time, the surface of each of the plurality of blades 2 provided with the plurality of convex ribs 21 and the second support rib group 114 serves as a positive pressure surface, and the surface of each of the plurality of blades 2 provided with the first support rib group 113 serves as a negative pressure surface.
- a reinforcing rib line 22 is disposed at a second end of each of the plurality of blades 2 away from the central hub 1.
- the reinforcing rib line 22 disposed can improve the strength of the plurality of blades 2.
- reinforcing rib lines 22 are disposed on two surfaces of each of the plurality of blades 2.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- The present application claims priority to
Chinese Patent Application No. 201922403606.0 filed on December 27, 2019 - The present application relates to the technical field of axial flow fans, for example, to an axial flow impeller.
- Fans are widely applied in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings for ventilation, dust removal and cooling purposes, and are also used in air conditioning equipment and household appliances for cooling and ventilation purposes. Fans are machinery used for transporting gas. From the energy viewpoint, they are machines for converting mechanical energy of a prime mover into energy of the gas. Depending on the gas flow direction, fans may be divided into centrifugal fans, axial flow fans, diagonal flow fans, and cross-flow fans.
- When an axial flow fan is operating, a power machine drives an impeller to rotate in a cylindrical housing. Gas enters from a current collector, gains energy through the impeller thus having increased pressure and speed, and then is discharged axially. The impeller is the main component of the fan, and its geometrical shape, size, number of blades and manufacturing accuracy have a great impact on the performance of the fan.
- An impeller made by cold pressing aluminum alloy is typically used in the structural design and production of the axial flow fan. Such impellers however have low efficiency, high energy consumption and loud noise during operation of the fan.
- In addition, such impellers are susceptible to deformation during transportation and use due to stack instability and are practically irreparable once deformation occurs. Although a same structure of plastic material may be used for replacement, the problems of low efficiency and loud noise are still not solved.
- The present application provides an axial flow impeller, which can solve the problems of loud noise and stack instability during transportation.
- An axial flow impeller provided by an embodiment includes a central hub and a plurality of blades.
- The central hub includes a base plate and a stacking sidewall. The stacking sidewall is disposed at an edge of the base plate, a plurality of first convex portions are disposed at a first edge of the stacking sidewall extending axially, a first concave portion is disposed between adjacent two of the plurality of first convex portions, a plurality of second convex portions are disposed at a second edge of the stacking sidewall extending in the axial direction, a second concave portion is disposed between adjacent two of the plurality of second convex portions, the plurality of first convex portions are in one-to-one correspondence with second concave portions in the axial direction, and first concave portions are in one-to-one correspondence with the plurality of second convex portions in the axial direction.
- The plurality of blades are disposed along an external surface of the stacking sidewall, and an edge of each of the plurality of blades connecting to the stacking sidewall extends from an edge of one of the plurality of first convex portions to an edge of an adjacent second convex portion.
-
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FIG. 1 is a schematic view of an axial flow impeller at a viewing angle of the present application; and -
FIG. 2 is a schematic view of an axial flow impeller at another viewing angle of the present application. -
- 1
- central hub
- 2
- blades
- 11
- base plate
- 12
- stacking sidewall
- 21
- convex rib
- 22
- reinforcing rib line
- 111
- mounting portion
- 121
- first convex portion
- 122
- first concave portion
- 123
- second convex portion
- 124
- second concave portion
- In the description of the present application, unless otherwise expressly specified and defined, the term "connected to each other", "connected" or "secured" is to be construed in a broad sense, for example, as securely connected, detachably connected, or integrated; mechanically connected or electrically connected; directly connected to each other or indirectly connected to each other via an intermediary; or internally connected between two elements or interactional relations between two elements. For those of ordinary skill in the art, specific meanings of the preceding terms in the present application may be understood based on specific situations.
- In the present application, unless otherwise expressly specified and limited, when a first feature is described as "on" or "below" a second feature, the first feature and the second feature may be in direct contact or be in contact via another feature between the two features instead of being in direct contact. Moreover, when the first feature is described as "on", "above" or "over" the second feature, the first feature is right on, above or over the second feature or the first feature is obliquely on, above or over the second feature, or the first feature is simply at a higher level than the second feature. When the first feature is described as "under", "below" or "underneath" the second feature, the first feature is right under, below or underneath the second feature or the first feature is obliquely under, below or underneath the second feature, or the first feature is simply at a lower level than the second feature.
- In the description of the present application, it should be noted that the orientations or position relations indicated by terms such as "above", "below", "left", "right", "vertical", "horizontal", "inside", "outside" and the like are based on orientations or position relations shown in the drawings. These orientations or position relations are intended only to facilitate and simplify description of the present application, and not to indicate or imply that a device or element referred to must have such specific orientations or must be configured or operated in such specific orientations. Thus, these orientations or position relations are not to be construed as limiting the present application. In addition, the terms "first" and "second" are used only to distinguish between descriptions and have no special meaning.
- The present application provides an axial flow impeller, which may be used on a fan.
- As illustrated in
FIG. 1 andFIG. 2 , the axial flow impeller includes acentral hub 1 and a plurality of blades 2, and the plurality of blades 2 are disposed along a circumferential direction of thecentral hub 1. - The
central hub 1 includes abase plate 11 and astacking sidewall 12. Thestacking sidewall 12 is disposed at an edge of thebase plate 11, a plurality of firstconvex portions 121 are disposed at a first edge of thestacking sidewall 12 extending axially, a firstconcave portion 122 is disposed between adjacent two of the plurality of firstconvex portions 121, a plurality ofsecond convex portions 123 are disposed at a second edge of thestacking sidewall 12 extending in the axial direction, a secondconcave portion 124 is disposed between adjacent two of the plurality of secondconvex portions 123, the plurality of firstconvex portions 121 are in one-to-one correspondence with secondconcave portions 124 in the axial direction, and firstconcave portions 122 are in one-to-one correspondence with the plurality of secondconvex portions 123 in the axial direction. - The
central hub 1 is provided with astacking sidewall 12 for stacking, a first edge of thestacking sidewall 12 extending in the axial direction can be axially engaged with a second edge of anotherstacking sidewall 12 extending in the axial direction, so that a stacking effect of two axial flow impellers is optimized, simultaneously, the weight of a single axial flow impeller is effectively reduced by 20%, and the transportation cost is reduced. - The plurality of blades 2 are disposed along an external surface of the
stacking sidewall 12, and an edge of each of the plurality of blades 2 connecting to thestacking sidewall 12 extends from an edge of one of the plurality of firstconvex portions 121 to an edge of an adjacentsecond convex portion 123. The edge of each of the plurality of blades 2 connecting to thestacking sidewall 12 is limited between the first edge and second edge of thestacking sidewall 12, so that the plurality of blades 2 of an upper axial flow impeller do not interfere with the plurality of blades 2 of a lower axial flow impeller and the axial flow impellers are stacked better. - The
base plate 11 includes amounting portion 111 and anannular portion 112 disposed at an periphery of themounting portion 111, themounting portion 111 is provided with amounting hole 1111, and a front surface of theannular portion 112 and a rear surface of theannular portion 112 are provided with support ribs. The mountingportion 111 is provided with a mountinghole 1111 to mount the axial flow impeller on a main body of the fan, and theannular portion 112 is provided with support ribs to improve the strength of the axial flow impeller. - The support ribs include a first
support rib group 113 disposed on the front surface of theannular portion 112 and a secondsupport rib group 114 disposed on the rear surface of theannular portion 112, and the firstsupport rib group 113 and the secondsupport rib group 114 are different in shape. - The first
support rib group 113 and the secondsupport rib group 114 respectively disposed on two surfaces of two sides of theannular portion 112 can improve the strength of the axial flow impeller, and the firstsupport rib group 113 and the secondsupport rib group 114 are of different shapes, so that the mounting surface of the axial flow impeller can be easily distinguished. - A plurality of first support ribs of the first
support rib group 113 extend in a rotational direction, and heights of the plurality of first support ribs extending in the axial direction gradually increase from a first end close to the mountingportion 111 to a second end away from the mountingportion 111. - When the axial flow impeller rotates, the first
support rib group 113 will generate centrifugal airflow, the efficiency of the airflow passing through the plurality of blades 2 is optimized, so that the effects of energy conservation and emission reduction are achieved, dust accumulated on the plurality of blades 2 can be taken away, the load increase caused by the accumulated dust is reduced, and the accumulation of dust and condensed water can be effectively prevented. - A plurality of second support ribs of the second
support rib group 114 extend in a radial direction of thecentral hub 1, and heights of the plurality of second support ribs extending in the axial direction gradually increase from a first end close to the mountingportion 111 to a second end away from the mountingportion 111. - The second supporting ribs are linear, the first supporting ribs are curved, and the shapes of the second supporting ribs and the first supporting ribs are different, so that the installation surfaces for air suction and for air blowing of the axial flow impeller can be conveniently distinguished.
- A plurality of
convex ribs 21 parallel to each other are disposed at a first end of each of the plurality of blades 2 close to thecentral hub 1, and an angle is formed between an arrangement direction of the plurality ofconvex ribs 21 and the radial direction of thecentral hub 1. - The roots of the blades 2 are optimized, and the strength of the edges of the plurality of blades 2 with thin walls is increased.
- In this embodiment, the length of the
convex ribs 21 closer to thecentral hub 1 is smaller, that is, theconvex ribs 21 parallel to each other gradually increase in a direction away from thecentral hub 1. - The plurality of
convex ribs 21 and the secondsupport rib group 114 are disposed on a same surface of each of the plurality of blades 2. At this time, the surface of each of the plurality of blades 2 provided with the plurality ofconvex ribs 21 and the secondsupport rib group 114 serves as a positive pressure surface, and the surface of each of the plurality of blades 2 provided with the firstsupport rib group 113 serves as a negative pressure surface. - Optionally, a reinforcing
rib line 22 is disposed at a second end of each of the plurality of blades 2 away from thecentral hub 1. The reinforcingrib line 22 disposed can improve the strength of the plurality of blades 2. - Optionally, in this embodiment, reinforcing
rib lines 22 are disposed on two surfaces of each of the plurality of blades 2.
Claims (8)
- An axial flow impeller, comprising:a central hub (1), comprising a base plate (11) and a stacking sidewall (12) disposed at an edge of the base plate (11), wherein a first edge of the stacking sidewall (12) extending axially is provided with a plurality of first convex portions, and a first concave portion (122) is provided between every two adjacent first convex portions (121) of the plurality of first convex portions (121), wherein a second edge of the stacking sidewall (12) extending axially is provided with a plurality of second convex portions (123), and a second concave portion (124) is disposed between every two adjacent second convex portions (123) of the plurality of second convex portions (123), wherein the plurality of first convex portions (121) are in one-to-one correspondence with second concave portions (124) in the axial direction, and the first concave portions (122) are in one-to-one correspondence with the plurality of second convex portions (123) in the axial direction; anda plurality of blades (2), disposed along an external surface of the stacking sidewall (12), and an edge of each of the plurality of blades (2) connecting to the stacking sidewall (12) extends from an edge of one of the plurality of first convex portions (121) to an edge of an adjacent second convex portion (123).
- The axial flow impeller of claim 1, wherein the base plate (11) comprises a mounting portion (111) and an annular portion (112) disposed at a periphery of the mounting portion (111), wherein the mounting portion (111) is provided with a mounting hole (1111), and wherein a first and second surface of the annular portion (112) are provided with support ribs.
- The axial flow impeller of claim 2, wherein the support ribs comprise a first support rib group (113) disposed on the first surface of the annular portion (112) and a second support rib group (114) disposed on the second surface of the annular portion (112), and wherein the first support rib group (113) and the second support rib group (114) are of different shapes.
- The axial flow impeller of claim 3, wherein a plurality of first support ribs of the first support rib group (113) extend in a rotational direction, and heights of the plurality of first support ribs extending in the axial direction gradually increase from a first end close to the mounting portion (111) to a second end away from the mounting portion (111).
- The axial flow impeller of claim 4, wherein a plurality of second support ribs of the second support rib group (114) extend in a radial direction of the central hub (1), and heights of the plurality of second support ribs extending in the axial direction gradually increase from a first end close to the mounting portion (111) to a second end away from the mounting portion (111).
- The axial flow impeller of claim 5, wherein a first end of each of the plurality of blades (2) close to the central hub (1) is provided with a plurality of convex ribs (21) that run parallel to each other, and an angle is formed between a direction in which the plurality of convex ribs (21) are arranged and the radial direction of the central hub (1).
- The axial flow impeller of claim 6, wherein the plurality of convex ribs (21) and the second support rib group (114) are disposed on a same surface of the plurality of blades (2).
- The axial flow impeller of claim 7, wherein a reinforcing rib line (22) is disposed at an end of each of the plurality of blades (2) away from the central hub (1).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201922403606.0U CN211259119U (en) | 2019-12-27 | 2019-12-27 | Axial flow impeller |
PCT/CN2020/100633 WO2021128803A1 (en) | 2019-12-27 | 2020-07-07 | Axial-flow impeller |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3872352A1 true EP3872352A1 (en) | 2021-09-01 |
EP3872352A4 EP3872352A4 (en) | 2022-10-26 |
Family
ID=71989162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20816374.1A Pending EP3872352A4 (en) | 2019-12-27 | 2020-07-07 | Axial-flow impeller |
Country Status (3)
Country | Link |
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EP (1) | EP3872352A4 (en) |
CN (1) | CN211259119U (en) |
WO (1) | WO2021128803A1 (en) |
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JP5935033B2 (en) * | 2011-03-30 | 2016-06-15 | パナソニックIpマネジメント株式会社 | Axial fan |
CN204175641U (en) * | 2014-09-28 | 2015-02-25 | 广州华凌制冷设备有限公司 | The wind wheel of air-conditioning and air-conditioning |
CN105275877A (en) * | 2015-10-26 | 2016-01-27 | 杭州微光电子股份有限公司 | Impeller structure of axial flow fan |
CN105485045A (en) * | 2015-12-24 | 2016-04-13 | 浙江亿利达风机股份有限公司 | Plastic axial impeller |
JP6926428B2 (en) * | 2016-09-27 | 2021-08-25 | 株式会社富士通ゼネラル | Axial fan and outdoor unit using it |
USD870254S1 (en) * | 2017-08-09 | 2019-12-17 | Mitsubishi Electric Corporation | Propeller fan |
CN110945250B (en) * | 2017-08-09 | 2021-09-28 | 三菱电机株式会社 | Propeller fan, air supply device, and refrigeration cycle device |
CN208918907U (en) * | 2018-10-24 | 2019-05-31 | 美的集团股份有限公司 | Axial-flow windwheel, air-conditioner outdoor unit and air conditioner |
CN109340181A (en) * | 2018-10-24 | 2019-02-15 | 美的集团股份有限公司 | Axial-flow windwheel, air-conditioner outdoor unit and air conditioner |
CN109209996A (en) * | 2018-10-24 | 2019-01-15 | 美的集团股份有限公司 | Axial-flow windwheel, wind wheel component, air-conditioner outdoor unit and air conditioner |
CN208918913U (en) * | 2018-10-24 | 2019-05-31 | 美的集团股份有限公司 | Axial-flow windwheel, air-conditioner outdoor unit and air conditioner |
CN109469644B (en) * | 2018-12-29 | 2020-07-31 | 宁波朗迪叶轮机械有限公司 | Axial flow fan blade |
CN209430482U (en) * | 2018-12-29 | 2019-09-24 | 宁波朗迪叶轮机械有限公司 | A kind of axial-flow leaf |
DE202019101209U1 (en) * | 2019-03-04 | 2019-03-12 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Fan wheel of an axial fan |
-
2019
- 2019-12-27 CN CN201922403606.0U patent/CN211259119U/en active Active
-
2020
- 2020-07-07 WO PCT/CN2020/100633 patent/WO2021128803A1/en unknown
- 2020-07-07 EP EP20816374.1A patent/EP3872352A4/en active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2021128803A1 (en) | 2021-07-01 |
CN211259119U (en) | 2020-08-14 |
EP3872352A4 (en) | 2022-10-26 |
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