EP3236081A1 - Aube de ventilateur centrifuge fabriquée en tôle pliée avec un joint sur l'extrados ou sur l'intrados - Google Patents

Aube de ventilateur centrifuge fabriquée en tôle pliée avec un joint sur l'extrados ou sur l'intrados Download PDF

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Publication number
EP3236081A1
EP3236081A1 EP16166124.4A EP16166124A EP3236081A1 EP 3236081 A1 EP3236081 A1 EP 3236081A1 EP 16166124 A EP16166124 A EP 16166124A EP 3236081 A1 EP3236081 A1 EP 3236081A1
Authority
EP
European Patent Office
Prior art keywords
profile
section
free end
end region
blade according
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.)
Granted
Application number
EP16166124.4A
Other languages
German (de)
English (en)
Other versions
EP3236081B1 (fr
Inventor
Matthias Wolf
Ralf Klinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Punker GmbH
Original Assignee
Punker GmbH
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
Application filed by Punker GmbH filed Critical Punker GmbH
Priority to ES16166124T priority Critical patent/ES2856054T3/es
Priority to PL16166124T priority patent/PL3236081T3/pl
Priority to EP16166124.4A priority patent/EP3236081B1/fr
Priority to US15/473,087 priority patent/US20170306974A1/en
Priority to CN201710261973.4A priority patent/CN107401525B/zh
Publication of EP3236081A1 publication Critical patent/EP3236081A1/fr
Application granted granted Critical
Publication of EP3236081B1 publication Critical patent/EP3236081B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
    • 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
    • F05D2230/00—Manufacture
    • F05D2230/50—Building or constructing in particular ways
    • F05D2230/54—Building or constructing in particular ways by sheet metal manufacturing

Definitions

  • the invention relates to a profiled blade for a fan wheel, with a profile body produced from at least one bent sheet metal strip. Furthermore, the invention relates to a fan wheel with such a profile blade.
  • a cohesive and / or positive connection of the adjacently arranged end region edges of the sheet-metal strip can then be provided in order to produce a stable profiled blade.
  • the adjacently arranged end region edges of Metal strip to be welded together and / or glued and / or clinching (clinching).
  • the object of the invention is to provide a profiled blade and a fan wheel with such profile blades, which have an improved rigidity for the profile blades.
  • the profile body is made of at least one bent sheet metal strip and a convex curved profile top, a spaced profile top arranged profile base and a first and a second profile nose, said profile lugs each having a convex curvature and the profile top with the lower profile part respectively connect end, wherein the upper profile part and / or the lower profile part is divided into at least two profile sections, wherein a first profile section is connected to the first profile nose and wherein a second profile section is connected to the second profile nose and wherein a first free end portion of the first profile section with a second free end portion of the second profile section is materially connected.
  • the at least one connection zone which is required in a design of the profiled blade of at least one or more metal strips to connect end portions of the metal strip or sheet metal strip, from the terms of forces occurring heavily loaded zones of the profile blade in terms of forces less heavily loaded zones are laid.
  • profile blades can be provided are, in addition to an aerodynamically favorable profiling, in particular with a different profiling for a pressure side and a suction side of the profiled blade, also ensure a process-reliable production and high fatigue strength. While the profile top is always convex, the profile base can be profiled in particular depending on the application, even or concave or convex.
  • the profiling of the profile body is always formed as a closed ring, preferably with a continuous course of curvature. Due to the angling of the at least one end region and the arrangement of the angled section of this end region between the profile upper part and the lower profile part, an advantageous connection zone for the material connection of the profile sections can be created. As a method for the cohesive connection of the profile sections in particular welding process, soldering or gluing process come into question.
  • a free end region of at least one profile section is angled relative to the upper profile part and the lower profile part and is arranged between the upper profile part and the lower profile part.
  • a free end region of a profile section flat on a strip-shaped from abuts a surface of the profile body remote contact surface of another profile section.
  • the contact surface on the angled section serves to form a soldering gap or adhesive gap with a large contact surface between the two profile sections and thus to provide a heavy-duty mechanical connection.
  • the contact surface is aligned parallel to the surface of the profile body. In this way, a homogeneous (welding or soldering or adhesive) gap is created between the two profile sections, which is advantageous for a reliable mechanical coupling between the two profile sections, especially when using a soldering method or an adhesive method.
  • the contact surface is curved in the same way as the associated surface of the profile body in order to ensure as constant a gap width as possible both in a longitudinal direction and in a transverse direction of the gap.
  • the angled free end region of the at least one profile section connects the upper profile part to the lower profile part.
  • the angled free end region in addition to the creation of an advantageous contact surface for the other profile section, the function of a reinforcing strut, which reinforces the upper profile relative to the lower profile part and thereby, in particular over against the profile blade acting bending moments, stabilized.
  • the angled free end portion of the at least one profile section is formed such that it connects the upper profile part in a region with a maximum distance relative to the lower profile part with the lower profile part, whereby a particularly advantageous reinforcing effect for the profile blade can be achieved.
  • the same cohesive connection method is used as for the connection of the two profile sections.
  • both cohesive connections are created by welding, in particular spot welding.
  • a different connection method may be used, which is possibly adapted to the connection method for the two profile sections.
  • the use of a thermosetting adhesive method for the integral connection between the angled free end region of the profile section and the opposite profile upper part or profile lower part can be provided. In this case, then the activation of the adhesive used in this case takes place by the heat input in carrying out the welding process.
  • the lower profile part is formed concavely curved and / or that the lower profile part has at least two profile sections.
  • a corresponding profile blade has an aerodynamically favorable profiling when used in a fan wheel.
  • the connection zone between the two profile sections in a mechanically slightly loaded region of the profile blade is thus the connection zone between the two profile sections in a mechanically slightly loaded region of the profile blade.
  • At least one of the free end regions is additionally bonded cohesively to the lower profile part or the upper profile part or to a profile element.
  • the profile body is formed from exactly one sheet metal strip.
  • the number of connection zones is kept minimal, whereby the manufacturing cost of the profile blade can also be kept at a low level. Furthermore, this ensures an advantageous flow of force within the profile blade, which is not disturbed by a plurality of connection zones, so that a material and thus weight-saving design of the profile blade can be achieved from this point of view.
  • both profile sections of the profiled upper part or of the lower profile part have a free end region which is angled relative to the upper profile part and the lower profile part and which extends between the upper profile part and the lower profile part.
  • both free end portions of the profile sections can be used as reinforcing struts with respect to the respective opposite profile upper part or lower profile part, whereby a particularly heavy-duty geometry of the profile blade can be achieved.
  • both end regions starting from a parting line between the two profile sections, on which a cohesive connection of the two profile sections, in particular by welding, are provided, extend at an acute angle to one another in the direction of the opposite profile top or profile bottom part.
  • a gap in particular in the manner of a groove, is formed between the two respective angled end regions, which also determines the course of the surfaces of the profile upper part or profile lower part after production of the integral connections.
  • each of the angled free end portions of the profile sections has a strip-shaped, offset from a surface of the profile body abutment surface and that a profile element adjacently arranged contact surfaces connects and partially determined the surface of the profile body.
  • the object of the profile element is thus to cover the, in particular groove-shaped, gap between the respectively angled end regions of the profile sections and thus to ensure an at least largely smooth surface for the profile top or profile bottom.
  • an envelope around the profile body has a largely drop-shaped, in particular curvature-continuous course.
  • the profile element is designed as a sheet metal strip and is arranged flush with the surfaces of the profile sections on the contact surface and integrally connected to the profile sections.
  • the object of the invention is achieved for a fan wheel for conveying a gaseous fluid having the features of claim 11.
  • the fan wheel comprises a disk-shaped Ronde, which is coaxial with a rotation axis and has a hub assembly, and a coaxial with the rotation axis and spaced from the Ronde ring arranged) and a plurality of predeterminable angular pitch in an annular space volume around the axis of rotation arranged profile blades according to one of claims 1 to 9, which are fixed with axial, opposite faces on the Ronde and the ring.
  • a profiled blade which is designed in particular according to one of claims 1 to 10, can be produced by a method with the following steps: providing a sheet metal strip to a forming device, forming the sheet metal strip to form a convexly curved profiled shell, a profiled part arranged at a distance from the profiled shell a first and a second profile nose which connect the upper profile part with the lower profile part at each end, so that two profile sections are formed on the upper profile part and / or the lower profile part, wherein a first profile section is connected to the first profile nose and wherein a second profile section with the second Profile nose is connected and wherein a free end portion of at least one profile section is angled relative to the upper profile part and the lower profile part and is disposed between the upper profile part and the lower profile part, and cohesive Festle gene at least a portion of the end portion of an adjacently disposed portion of the profile top and / or the profile base.
  • profile blades 1, 41, 81, 121, 161, 201, 241, 281, 321, 361, 401 described in greater detail below, the same reference numerals are used for functionally identical structures. A description of the respective structures takes place only once. First, an explanation will be given in the FIG. 1 profiled blade 1 shown in detail, on the basis of which the basic components of the other, in the FIGS. 2 to 5 and 7 to 14 shown profile blades 41, 81, 121, 161, 201, 241, 281, 321, 361, 401 are shown.
  • profile blade 1 is purely exemplary made of a rectangular sheet-metal strip 2.
  • the sheet-metal strip 2 has two longest edges 3, 4 which determine a profile of the profile blade 1 designed as a profile body 7, for example a drop-like or kidney-like profile, and two end region edges 5, 6.
  • the longest edges 3, 4 are arranged in each case in mutually parallel planes, which are oriented at right angles to planes in which the end region edges 5, 6 are arranged.
  • the sheet-metal strip 2 may be produced, for example, as a section of a strip material, not shown, or as a section of a sheet metal plate, not shown, in particular flat.
  • the metal strip 2 in each case at a distance from the respective End Schemeskante 5, 6, which corresponds to about 25 percent of the respective total length of the two longest edges 3, 4, in opposite directions and at right angles to the two longest edges 3, 4 with exemplary different bending radii, which are significantly larger than a material thickness of the metal strip 2, was bent.
  • a profile body 7 is formed which, purely by way of example, has a constant profiling along a profile axis 8.
  • the profile body 7 in the FIG. 1 Profiled blade 1 shown purely by way of example comprises a concavely curved profile upper part 9, a convexly curved lower profile part 10 and two respective convex profile noses 11, 12, which connect the upper profile part 9 as an example with the lower profile part 10.
  • a first profile nose 11 forms a front edge 15 of the profile blade 1
  • a second profile nose 12 forms a trailing edge 16 of the profile blade.
  • the profile upper part 9 is formed from two profile sections 17, 18, a first profile section 17 extending between the first end region edge 5 and the first profile nose 11, while a second profile section 18 extending between the second end region edge 6 and the second profile nose 12 is extended.
  • a surface 19 of the profiled upper part 9 is defined by an upper side 20 of the first profiled section 17 and by an upper side 21 of the second profiled section 18 and that an end region 22 of the first profiled section 17, which may also be referred to as a first end region 22, rests on the second profile section 18 in the manner described in more detail below.
  • the end region 23 of the second profile section 18, which may also be referred to as the second end region 23, extends from the upper side 21 into an inner space 14 of the profiled blade 1, which is bounded by the sheet metal strip 2 with the exception of open end faces.
  • the end region is provided with two, respectively at least substantially right-angled and opposite bends 24, 25, to form a contact surface 26, which is designed as a strip-shaped surface and offset from a surface 19 of the profile body 7, which is preferably parallel to the surface 20 of the first profile section 17 is arranged offset by the thickness of the metal strip 2.
  • the end region 23 extends after a further at least substantially right-angled fold 27 normal to a concave inner surface 28 of the profiled lower part 10 and is the end with a fold 31 again at right angles bent. In this way, a parallel to the inner surface 28 aligned contact surface 29 is formed, which can be used for cohesive connection with the inner surface 28.
  • the two profile sections 17, 18 are welded together in the region of a parting line 30 on the surface 19 in a manner not shown.
  • it may further be provided to connect the contact surface 29 to the inner surface 28 in a material-locking manner using a liquid adhesive.
  • the two profile sections 17, 18 are also soldered, exclusively welded or glued exclusively.
  • both end portions 62, 63 of the profile sections 57, 58 starting from a respective top 60, 61, which determine the surface 59 of the profile top 49 of the profile blade 41, bent at an acute angle to the respective top 60, 61.
  • the two end portions 62, 63 extend in the interior 54 of the profile blade 41 obliquely to the inner surface 68 of the profiled lower part 50.
  • both end portions 62, 63 each near the end portion 45, 46 with one provided with a fold 71, 72, there in each case one parallel to the inner surface 68 aligned contact surface 69 form, which can be materially connected to the inner surface 68.
  • a parting line 70 which can be closed by welding, for example. In the course of this welding process, a cohesive connection of the two profile sections 57, 58 can be produced.
  • profile blade 81 In the in the Figures 3 and 4 illustrated third embodiment of a profile blade 81 are both profile sections 97, 98 as the second profile section 18 according to the in FIG. 1 formed profiled blade 1 is formed and arranged in opposite directions to each other.
  • Each of the end regions 102, 103 of the profile sections 97, 98 thus has a sequence of opposing folds 104, 105, 107, 111.
  • a division of the lower profile part 90 into the two profile sections 97, 98 is provided so that the respective end regions 102, 103 extend from the lower profile part 90 to the upper profile part 89 and there with contact surfaces 109 on an inner surface 113 of the profile upper part 89 are firmly bonded.
  • Each of the end regions 102 has a strip-shaped abutment surface 106, which is aligned parallel to the respective upper side 100, 101 of the profile sections 97, 98 and has a distance from the respective upper side 100, 101, which corresponds to a material thickness of the metal strip 82 by way of example.
  • a gap 115 is formed between the two strip-shaped contact surfaces 106 of the end regions 102, 103.
  • This gap 115 is unfavorable from an aerodynamic point of view and also has negative effects on the dimensional stability of the profile blade 81.
  • the gap 115 is covered by a purely exemplary plate-shaped profile element 114 that cohesively on the two contact surfaces 106 of the two End portions 102, 103 is attached. By this measure, a two-part profile blade 81 is created with high strength.
  • Profiled blade 121 shown is a variant of the profile blade 81 and differs only by the design of the profile element 154. This is different from that in the FIG. 3 shown profiled element 114 is not plate-shaped with slightly concave curvature, but rather has an integrally formed by deformation, parallel to the profile axis 128 aligned central web 156 extending from an underside 157 of the profile element 154 in the direction of the inner surface 151 of the profile top 129 and cohesively this inner surface 151 is fixed and thereby allows additional stabilization of the profile blade 121.
  • a fan wheel 560 is shown purely by way of example with a mounting with profile blades 1.
  • a fan wheel 560 is used for conveying a gaseous fluid and, purely by way of example, comprises a plurality of blades 1, which are arranged in a predeterminable angle division in an annular space volume about an axis of rotation 92.
  • the blades 1 are fixed with their axial, opposite end portions in each case to support means 563, 564.
  • a first carrier means is formed as a disk-shaped Ronde 563 coaxial with the axis of rotation 562 and includes a hub assembly 565.
  • a second carrier means is formed as a ring 564 coaxial with the axis of rotation 562. It is provided that the profile blades 1 are each arranged radially inwardly with the first profile nose 11, while the second profile nose 12 is arranged radially outboard. Due to the curvatures of the profile top 9 and the lower profile part 10 is at a rotation the fan wheel 560 about the axis of rotation 562 with a direction of rotation, as shown in FIG FIG.
  • a high-strength and cost-effective fan 560 is thus realized in cooperation with the disk-shaped Ronde 563 and the ring 564.
  • profile blades 161, 201, 241, 281, 321, 361, 401 and 441 can be divided into two groups.
  • the profile blades 161, 201, 241 form a first group, while the profile blades 281, 321, 361, 401, 441 form a second group.
  • the profile upper parts 169, 209, 249 and the lower profile parts 170, 210, 250 of the respective profile bodies 167, 207, 247 each in profile sections 177, 217, 257 and 178, 218 , 258 are divided and end portions 182, 222, 262 and 183, 223, 263 are each arranged opposite the end face and are connected to one another in a material-locking manner.
  • a profile element 194, 234, 274 is arranged in each case between the end regions 182, 222, 262 and 183, 223, 263, that with inner surfaces facing one another the end portions 182, 222, 262 and 183, 223, 263 is materially connected.
  • the profile element 194 is S-shaped.
  • the profile element 234 is designed in the manner of a double-T-beam.
  • the profile element 274 as a variant of the profile element 234 according to the FIG. 8 executed and has at opposite surfaces in each case an outer web 275, by which the profile element 274 resting on the end portions 262, 263 are spaced apart.
  • the profile blades 281, 321, 361, 401, 441 of the second group can be regarded as variants or further developments of the profile blades 1, 41, 81, 121, wherein, in accordance with the profile blades 161, 201, 241 according to the first group, respectively Profile tops 289, 329, 369, 409, 449 and the lower profile parts 290, 330, 370, 410, 450 in profile sections 297, 337, 377, 417, 457 and 298, 338, 378, 418, 458 are divided.
  • At least one of the end regions 302, 342, 382, 422, 462 and 303, 343, 383, 423, 463 is in one Profiled manner that it can serve as a contact surface for each opposite end portion arranged.
  • the profile blade 281 has according to the FIG. 10 to a variant of the profile blades 1 according to the FIG. 1 ,
  • both end regions 343 of the profiled upper part 329 and the lower profile part 330 are each folded twice in opposite directions and thus form contact surfaces for the two end regions 342 of the profile upper part 329 and the lower profile part 330.
  • the profile blade 361 has two reinforcing struts between the profile upper part 369 and the lower profile part 370.
  • the end regions 423 of the upper profile part 409 and the lower profile part 410 respectively form contact surfaces for the support of the end regions 422 of the upper profile part 409 and the lower profile part 410.
  • the end regions 423 additionally have been folded in such a way that the end region 423 of FIG Profile upper part 409 frontally opposite to the end portion 423 of the lower profile part 410 is arranged, whereby an unspecified gap is formed, which can be cohesively connected before the end portions 422 of the profile top 409 and the lower profile part 410 are materially connected to the contact surfaces.
  • the profile vane 441 is a variant of the profile vane 401, in which the end region 463 of the profile top part 409 forms both a contact surface for the end regions 462 of the profile top part 449 and the profile bottom part 450 and for the end region 463 of the profile bottom part 450. Also in this case can be provided, first the end portions 463 of the profile top 449 and the lower profile part 450 to connect materially together and to connect in a subsequent step, the end portions 462 cohesively with the contact surfaces of the end portions 463.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP16166124.4A 2016-04-20 2016-04-20 Aube de ventilateur centrifuge fabriquée en tôle pliée avec un joint sur l'extrados ou sur l'intrados Active EP3236081B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES16166124T ES2856054T3 (es) 2016-04-20 2016-04-20 Alabe de ventilador centrífugo fabricado de chapa flexionada, con una soldadura en el lado de presión o succión
PL16166124T PL3236081T3 (pl) 2016-04-20 2016-04-20 Łopatka dmuchawy promieniowej, wykonana z wygiętej blachy ze szwem po stronie tłoczenia lub po stronie ssania
EP16166124.4A EP3236081B1 (fr) 2016-04-20 2016-04-20 Aube de ventilateur centrifuge fabriquée en tôle pliée avec un joint sur l'extrados ou sur l'intrados
US15/473,087 US20170306974A1 (en) 2016-04-20 2017-03-29 Profiled Blade and Fan Impeller
CN201710261973.4A CN107401525B (zh) 2016-04-20 2017-04-20 成型叶片和风扇叶轮

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16166124.4A EP3236081B1 (fr) 2016-04-20 2016-04-20 Aube de ventilateur centrifuge fabriquée en tôle pliée avec un joint sur l'extrados ou sur l'intrados

Publications (2)

Publication Number Publication Date
EP3236081A1 true EP3236081A1 (fr) 2017-10-25
EP3236081B1 EP3236081B1 (fr) 2021-01-06

Family

ID=55808410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16166124.4A Active EP3236081B1 (fr) 2016-04-20 2016-04-20 Aube de ventilateur centrifuge fabriquée en tôle pliée avec un joint sur l'extrados ou sur l'intrados

Country Status (5)

Country Link
US (1) US20170306974A1 (fr)
EP (1) EP3236081B1 (fr)
CN (1) CN107401525B (fr)
ES (1) ES2856054T3 (fr)
PL (1) PL3236081T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108534202A (zh) * 2018-06-14 2018-09-14 杭州老板电器股份有限公司 叶轮、风机及油烟机
CN109973430B (zh) * 2019-05-08 2021-10-26 泛仕达机电股份有限公司 一种组合式中空机翼叶片

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BE457250A (fr) *
DE326041C (de) * 1920-09-22 Aeg Schaufel fuer Kreiselgeblaese
US1983201A (en) * 1931-03-07 1934-12-04 Bbc Brown Boveri & Cie Rotary blower blade
JPS60198398A (ja) * 1984-03-21 1985-10-07 Mitsubishi Electric Corp 羽根車

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DE7403245U (de) * 1974-04-18 Wilhelm Gebhardt Kg Aus einem Hohlprofil bestehende Schaufel für ein Gebläselaufrad
GB317798A (en) * 1928-08-22 1930-01-23 Internat General Electric Y Improvements in and relating to impellers for compressors, blowers or the like
US2958460A (en) * 1957-12-16 1960-11-01 Ellis W Bullock Centrifugal fan
US3140042A (en) * 1961-08-15 1964-07-07 Fujii Noriyoshi Wheels for centrifugal fans of the forward curved multiblade type
US3144204A (en) * 1962-08-24 1964-08-11 Acme Engineering And Mfg Corp Centrifugal blower wheel
US3856434A (en) * 1973-10-18 1974-12-24 Westinghouse Electric Corp Centrifugal fan wheel
JPS5751996A (en) * 1980-09-10 1982-03-27 Mitsui Eng & Shipbuild Co Ltd Fan for centrifugal blower
JPS6018243A (ja) * 1983-07-12 1985-01-30 Daikin Ind Ltd 中空翼の製造方法
CN203627302U (zh) * 2013-11-20 2014-06-04 浙江双阳风机有限公司 一种离心风机叶轮
DE102014207903A1 (de) * 2014-04-28 2015-11-12 Ebm-Papst Mulfingen Gmbh & Co. Kg Schaufelkante

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE457250A (fr) *
DE326041C (de) * 1920-09-22 Aeg Schaufel fuer Kreiselgeblaese
US1983201A (en) * 1931-03-07 1934-12-04 Bbc Brown Boveri & Cie Rotary blower blade
JPS60198398A (ja) * 1984-03-21 1985-10-07 Mitsubishi Electric Corp 羽根車

Also Published As

Publication number Publication date
CN107401525A (zh) 2017-11-28
ES2856054T3 (es) 2021-09-27
PL3236081T3 (pl) 2021-08-02
EP3236081B1 (fr) 2021-01-06
CN107401525B (zh) 2021-01-12
US20170306974A1 (en) 2017-10-26

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