EP4348057A1 - Ventilateur amélioré - Google Patents

Ventilateur amélioré

Info

Publication number
EP4348057A1
EP4348057A1 EP22729224.0A EP22729224A EP4348057A1 EP 4348057 A1 EP4348057 A1 EP 4348057A1 EP 22729224 A EP22729224 A EP 22729224A EP 4348057 A1 EP4348057 A1 EP 4348057A1
Authority
EP
European Patent Office
Prior art keywords
air
housing
opening
impeller
fan
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
Application number
EP22729224.0A
Other languages
German (de)
English (en)
Inventor
Wei Zhang
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
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 EP21201123.3A external-priority patent/EP4095391A1/fr
Application filed by Koninklijke Philips NV filed Critical Koninklijke Philips NV
Publication of EP4348057A1 publication Critical patent/EP4348057A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F04F5/466—Arrangements of nozzles with a plurality of nozzles arranged in parallel

Definitions

  • the present disclosure relates to a fan for providing air flow having no external blades.
  • Typical fans comprise a set of blades which are arranged to rotate about a central axis, which are driven by a motor to provide an air flow, typically a cooling air flow.
  • Air multipliers are a type of fan which don’t include a set of external blades.
  • an air flow is provided by an impeller which is located within a base of the fan, which drives air from an inlet to an outlet.
  • the fan has an opening at the centre of the fan, through which air emitted from the outlet is drawn by the Coanda effect, resulting in an increase in air flow.
  • the impeller rotates at high speeds, the flow of air is smoother than that of a regular bladed fan, and as a result the air flow feels more natural. Further, there are safety advantages associated with the lack of external blades.
  • a fan comprising: a housing defining an opening which extends through the housing; a first air flow channel defined within the housing, comprising a first air inlet, a first air outlet and a first impeller for driving air from the first inlet to the first outlet; and a second air flow channel defined within the housing, comprising a second air inlet, a second air outlet and a second impeller for driving air from the second inlet to the second outlet, wherein the first and second air outlets are configured to draw air through the opening.
  • the opening may extend completely through the housing.
  • the opening may extend completely through the housing in a depth direction.
  • the opening may extend through the housing from a first side to a second side of the housing.
  • the opening may be an airflow opening.
  • the opening may be configured such that, in use of the fan, air flows through the opening.
  • the opening may be substantially cylindrical.
  • the airflow opening may be defined by a radially inner surface of the housing.
  • the housing may have an inner surface defining the opening and an outer external surface.
  • the housing may have a radially inner surface defining the opening and a radially outer external surface.
  • the first and second air outlets may be configured to draw air through the opening when air is emitted from the first and second air outlets.
  • the first and second air outlets may be configured to draw air through the opening and from around an outer surface of the housing.
  • the first and second air outlets may be configured to draw air through the opening and from around an outer surface of the housing when air is emitted from the first and second air outlets.
  • the first and second outlets may be configured to discharge air into the vicinity of the opening.
  • the first and second outlets may be configured to discharge air into the opening.
  • the first and second air outlets may be located on an inner surface of the housing.
  • the first and second air outlets may be located on a radially inner surface of the housing,
  • the first and second outlets may be configured to draw air through the opening by the Coanda effect.
  • the first and second outlets may be configured to draw air from around an outer surface of the housing by the Coanda effect. Air emitted by the first and second opening may entrain the surrounding air. The volume of air driven, or discharged, by the fan may therefore be greater than that taken in at the air inlets and emitted at the air outlets of the fan.
  • the shape of the first and second air outlets may be configured to provide the Coanda effect.
  • the fan may also be known as an air mover.
  • the fan may be a bladeless fan or air multiplier.
  • the fan may be an air purifier.
  • the fan may be a humidifier, and/or a heater.
  • the impeller may comprise a rotor and blades or vanes for transmitting motion. The impeller may transmit motion to the air in the air flow channel.
  • air may be drawn into the first and second inlets from the back of the housing.
  • the air may flow along the first and second air channels and be emitted from the housing at the first and second outlets.
  • the first air channel may comprise the first inlet, a first inlet chamber, the first impeller, a first outlet chamber, and the first outlet.
  • the second air channel may comprise the second inlet, a second inlet chamber, the second impeller, a second outlet chamber, and the second outlet.
  • the air flow channels may be independent of each other.
  • the air flow channels may be separate from each other.
  • the fan may comprise two or more air flow channels.
  • Each air flow channel may comprise at least one air inlet, at least one air outlet and at least one impeller for driving air between the inlet(s) and outlet(s).
  • the housing may enclose each air flow channel.
  • the housing may define a centreline, and wherein the first impeller is on one side of the centreline and the second impeller is on the other side of the centreline.
  • the first and second impellers may be located in the housing at opposite sides of the opening.
  • the centreline may be a centreplane.
  • the centreplane may define an axis of symmetry of the housing.
  • the first and second impellers may have a rotation axis, and the first and second impellers may be arranged such that the rotation axes are parallel with the centreline.
  • the first and second impellers may be arranged such that the rotation axes are parallel with a centreplane.
  • the housing may be elongate.
  • the first impeller may be located towards or adjacent to a first end of the housing, and the second impeller may be located towards or adjacent to a second end of the housing, opposite the first end.
  • An elongate housing has a length longer than its width.
  • the fan may be positionable in a vertical orientation such that the longest dimension is arranged vertically.
  • the fan may be positionable in a horizontal orientation such that the longest dimension is arranged horizontally.
  • the opening may be substantially cylindrical through the housing.
  • the housing may be substantially cylindrical, the diameter of the cylinder defining a width and depth of the housing.
  • the first and second inlets may be located on an inner surface of the housing.
  • the first and second inlets may be located on a radially inner surface of the housing.
  • the arrangement of the inlets on the inner surface of the housing may provide a fan having a compact size. The position of the air inlets on the inner surface of the housing may allow air to be drawn through the opening when the impeller is used to drive air from the inlet to the outlet.
  • the first and second inlets may be located at opposite sides of the opening.
  • the first and second inlets may be located at radially opposite sides of the opening.
  • the first and second inlets may be located at opposite sides of the opening in a width direction of the housing.
  • the first and second inlets may be located at opposite sides of the opening in a length direction of the housing.
  • the first and second inlets may be located, such that, when the fan is positioned in a vertical position, the inlets are positioned at horizontally opposite sides of the opening, such as the first inlet being located at a left hand side of the opening and the second inlet being located at a right hand side of the opening.
  • the first and second inlets may be located, such that, when the fan is positioned in a vertical position, the inlets are positioned at vertically opposite sides of the opening, such as the first inlet being located at a top side of the opening and the second inlet being located at a bottom side of the opening.
  • the fan may be positionable at a range of positions and orientations, and the relative arrangement of the first and second inlets will depend upon the orientation of the fan.
  • At least one motor may be provided in the fan.
  • a single motor may drive the first and second impellers.
  • Each impeller may have an individual motor arranged to drive the impeller.
  • the or each motor may be provided in the housing.
  • the first and second impellers may be located in the housing.
  • the first and second impellers may be located in the housing at opposite sides of the opening. By locating the first and second impellers at opposite sides of the opening, the fan may be more compact in size.
  • the first and second impellers may be located at opposite sides of the opening in a length direction of the housing.
  • the first and second impellers may be located at opposite sides of the opening in a width direction of the housing.
  • the first and second impellers may be located at radially opposite sides of the opening.
  • the first and second impellers may be located at opposite sides of the opening in a length direction of the housing.
  • the first and second impellers may be located at opposite sides of the opening in a width direction of the housing.
  • the first and second impellers may be located, such that when the fan is positioned in a vertical position, the impellers are positioned at vertically opposite sides of the opening, such as the first impeller being located at a top side of the opening and the second impeller being located at a bottom side of the opening.
  • the first and second impellers may be located, such that, when the fan is positioned in a vertical position, the impellers are positioned at horizontally opposite sides of the opening, such as the first impeller being located at a left hand side of the opening and the second impeller being located at a right hand side of the opening.
  • the fan may be positionable at a range of positions and orientations, and the relative arrangement of the first and second impellers will depend upon the orientation of the fan.
  • the impellers may be high speed impellers.
  • the impellers may be mixed flow impellers.
  • At least one of the first and second air flow channels may comprise a filter.
  • the fan By placing a filter in at least one of the first and second air flow channels, the fan may be an air purifier.
  • the filter is configured to clean the air passing through the air flow channel, such that cleaner air is emitted from the outlet.
  • the filter removes impurities from the air.
  • Adding a filter to an air flow channel adds resistance to the air flow through the air flow channel. By providing two air inlets, two impellers, and two independent air flow channels the effect of the added resistance is reduced to provide an improved purification performance.
  • the filter may be located between the air inlet and the impeller.
  • the filter may be located in the housing behind the air inlet.
  • the filter may be located in the housing adjacent the air inlet.
  • At least one of the first and second air flow channels may comprise a heating element and/or a humidifier.
  • the first and second air flow channels may each comprise a heating element and/or a humidifier.
  • At least one of the first and second air flow channels may comprise a cooling element and/or a dehumidifier.
  • the first and second air flow channels may each comprise a cooling element and/or a dehumidifier.
  • the first and second outlets may each comprise a curved guiding surface.
  • the curved guiding surface guides air so as to entrain the surrounding air by the Coanda effect.
  • the first and second outlets may each comprise a slit shaped outlet.
  • the first and second outlets may be formed on the circumference of the opening.
  • the slit shaped outlet guides air so as to entrain the surrounding air by the Coanda effect.
  • the first and second air outlets may be located at opposite sides of the opening.
  • the first and second outlets may be located at radially opposite sides of the opening.
  • the first and second outlets may be located at opposite sides of the opening in a width direction of the housing.
  • the first and second outlets may be located at opposite sides of the opening in a length direction of the housing.
  • the first and second outlets may be located, such that, when the fan is positioned in a vertical position, the outlets are positioned at horizontally opposite sides of the opening, such as the first outlet being located at a left hand side of the opening and the second outlet being located at a right hand side of the opening.
  • the first and second outlets may be located, such that when the fan is positioned in a vertical position, the outlets are positioned at vertically opposite sides of the opening, such as the first outlet being located at a top side of the opening and the second outlet being located at a bottom side of the opening.
  • the fan may be positionable at a range of positions and orientations, and the relative arrangement of the first and second outlets will depend upon the orientation of the fan.
  • air may flow through the opening from a back to a front of the housing.
  • the first and second air outlets may be located towards the front of the housing.
  • the first and second air inlets may be located towards the back of the housing.
  • the first and second air inlets may be located substantially behind the first and second air outlets. By locating the air inlets towards the back of the housing, behind the air outlets, the inlets may draw air from the back of the fan.
  • the opening may be wider at the back of the housing than the front of the housing.
  • Figure l is a schematic view of a fan according to arrangements of the present disclosure
  • Figure 2 is a schematic vertical cross-sectional view of the fan (taken along the line marked II-II in Figure 1);
  • Figure 3 is a schematic cross-sectional view of the fan (taken along the line marked III-III in Figure 2) according to arrangements of the present disclosure.
  • Figure 4 is a schematic cross-sectional view of the fan (taken along the line marked IV- IV in Figure 2) according to arrangements of the present disclosure.
  • the fan 100 comprises a housing 1 through which an opening 2 is formed.
  • the housing 1 is substantially cylindrical, having a length LH and a width WH and a depth DH.
  • the housing 1 is defined by a substantially cylindrical external surface 30, and two planar end faces 34, 36.
  • the width WH and depth DH are substantially the same.
  • the length LH is longer than the width WH and depth DH, such that the housing 1 is elongate in the length direction.
  • a centreline or central plane C is defined across the middle of the housing 1 in a horizontal direction which divides the housing 1 in half.
  • the fan 100 is in a vertical position, such that the length L H is in a substantially vertical direction. In the vertical position, the fan 100 rests on a substantially circular end face 34 of the housing 1 and take up a small area of the surface on which it rests.
  • the fan 100 may also be used in a horizontal orientation, in which the length L H is arranged in a horizontal direction. In this orientation, the fan 100 will have a low height profile, making it particularly suitable for use in locations where there is limited vertical space available, such as under a desk.
  • the substantially cylindrical shape of the housing 1 may be slightly flattened to form a plane on which the fan 100 can rest in the horizontal position.
  • the opening 2 is defined by an inner surface 38 of the housing 1.
  • the inner surface 38 of the housing 1 forms various features of the fan 100 as will be described below.
  • air passes through the opening 2 in the depth direction when the fan 100 is in use.
  • the air enters the opening 2 at a region that will be referred to as the back 20 of the housing throughout this description, and the air leaves the opening 2 at a region that will be referred to as the front 22 of the housing.
  • the opening 2 is formed within the housing 1 and is substantially cylindrical, having a depth Do in the direction of the depth D H of the housing 1.
  • the opening 2 is formed through the housing 1 in the depth direction. From a front view, the opening 2 is substantially stadium, or obround shaped, in that it is formed of two semicircles connected by parallel lines at a tangent to their endpoints.
  • the opening 2 through the housing 1 therefore substantially takes the form of a cylinder which has been flattened in the width direction, defining an inner surface 24 of the housing 1 having planar faces 26, 27 and hemicylindrical ends 28, 29.
  • the opening 2 has a length Lo, between the hemispherical ends 28, 29, and a width Wo between the parallel faces 26, 27.
  • the length Lo and the width Wo are each less than the respective length L H and width W H of the housing 1.
  • the width Wo slightly narrows from the front 22 to the back 20 of the housing 1, such that the opening 2 could be said to be tapered towards the back 20 of the housing 1.
  • the planar faces 26, 27 are not quite parallel.
  • the housing 1 encloses two independent air flow channels or air flow paths.
  • Each air flow channel comprises an inlet 6, 8, an impeller 4, 11 and an outlet 10, 16.
  • Each air flow channel also passes through air chambers defined by the housing 1.
  • the chambers comprise left and right inlet chambers 13, 5, top and bottom chambers 3, 12 and left and right outlet chambers 9, 15.
  • the first air flow channel or path comprises first inlet 6 and right inlet chamber 5, located at the right hand side of the opening 2, first impeller 4 and top chamber 3 located above the opening 2, and left outlet chamber 9 and first outlet 10, located at the left hand side of the opening 2.
  • the second air flow channel or path comprises second inlet 8 and left inlet chamber 13, located at the left hand side of the opening 2, second impeller 11 and bottom chamber 12 located below the opening 2, and right outlet chamber 15 and second outlet 16 located at the right hand side of the opening.
  • the air flow channels are arranged to be substantially rotationally symmetrical.
  • the first and second inlets 6, 8 are arranged on the opposite planar surfaces 26, 27 of the opening 2.
  • the inlets 6, 8 extend along substantially the entire length Lo of the opening 2.
  • the inlets 6, 8 are located towards the back of the opening 2, such that air can be drawn in from the back of the fan 100 in use.
  • the inlets 6, 8 could be located on the top and bottom end faces 34, 36, or the external surface 30 of the housing.
  • Filters 7, 14 are located in the inlet chambers 5, 13 behind the inlets 6, 8.
  • the inlet chambers 5, 13 and/or outlet chambers 9, 15 may include filters, heating/cooling elements, and/or humidifiers/dehumidifiers.
  • the first and second air outlets 10, 16 each comprise a narrow elongate slit towards a front of the housing 1.
  • the air outlets 10, 16 are formed in the front circumference of the opening 2.
  • the air outlets 10, 16 are therefore located in front of the inlets 6, 8.
  • the air outlets 10, 16 have a curved guiding surface, shaped to provide the Coanda effect, which effectively increases the volume of air which is moved by the fan 100.
  • the flow of air out of the outlets 10, 16 draws air through the opening 2, thus increasing the volume of air which is moved.
  • the flow of air out of the outlets 10, 16 draws air from around the external surface 30 of the housing 1, thus further increasing the volume of air which is moved.
  • FIG 4 a horizontal cross-section is taken through the first impeller 4, located at the top of the housing 1.
  • air flows upwards from the right inlet chamber 5, through the impeller 4 in a generally right to left direction and down into the left outlet chamber 9.
  • the first impeller 4 drives the air flow by rotation of a set of impeller blades around an impeller axis A.
  • the axis A extends substantially horizontally, in the width direction of the housing 1 so as to move the air in a direction substantially right to left.
  • the impeller axis 4 is slightly offset from the width direction. As a result, air is moved in a direction having a forwards component, so as to direct the air from the right inlet chamber 5 to the left outlet chamber 9.
  • the impeller axis A is arranged substantially parallel to a plane defined by the width direction and depth direction of the housing 1. In other words, the impeller axis A lies within a plane parallel to central plane C.
  • the impeller 4 is a high speed impeller which provides a smooth air flow. As an impeller is typically longer in its axial direction than its radial direction. This arrangement allows a length dimension of the housing 1 enclosing the impellers to be minimised, and thus the housing 1 can be compact.
  • air inlets 6, 8 By positioning of the air inlets 6, 8 on the inner surface 24 of the housing and providing inlet chambers 5, 13, air can flow from the inlets 6, 8 to the impeller 4, 11 in a smooth curved path.
  • the air inlets 6, 8 may be located on the external surface 30, or end faces of the housing 34, 36. Due to the abrupt comers and thus change in air flow directions, such an air flow would have greater resistance and thus be less efficient.
  • the housing 1 would also be larger to ensure adequate air flow into the inlets 6, 8, if the inlets 6, 8 were located on the external surface 30, or end faces 34, 36 of the housing 1.
  • the impeller 4 is a mixed flow impeller, in which air is input in an axial direction and air is output in a direction having an axial and radial component.
  • FIG 4 a detailed view of only the top impeller 4 is shown in Figure 4, the skilled person would understand that the arrangement of the bottom impeller 11 and the air flow through the bottom impeller 11 would be the reverse of the top impeller 4, i.e., the impeller axis A will be arranged to drive air between the left inlet chamber 13 located towards the back of the housing 1 and the right outlet chamber 15 located towards the front of the housing 1.
  • the arrangement of the impellers 4, 11 in the opposite ends of the housing 1, and the substantially symmetrical positioning of the air flow channels results in an efficient use of space, which means the fan 100 can be more compact whilst having an increase in performance over a single impeller fan system.
  • the fan 100 also comprises a first and second motor (not shown) arranged to drive the first and second impellers 4,11 respectively.
  • a user is able to control the motors by means of a switch.
  • a user switches the switch to turn on the power to the first and second motors.
  • the motors drive the first and second impellers 4, 11.
  • air from the space at the back 20 of the housing 1 is drawn through the inlets 6, 8, into the inlet chambers 5, 13.
  • From the first or right inlet chamber 5 air is drawn upwards into the top chamber 3, and through the first impeller 4.
  • the air then travels out of the first impeller 4 down into the left outlet chamber 9 and out through the first outlet 10.
  • Air which is emitted out of the first and second outlets 10, 16 also draws in air through the opening 2, and air passing around the external surface 30 of the housing 1, by the Coanda effect, thus increasing the volume of air which is delivered to the space in front 22 of the fan 100.
  • a computer program may be stored or distributed on a suitable medium, such as an optical storage medium or a solid- state medium supplied together with or as part of other hardware, but may also be distributed in other forms, such as via the Internet or other wired or wireless telecommunication systems. Any reference signs in the claims should not be construed as limiting the scope.

Landscapes

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

Abstract

Selon un aspect, l'invention concerne un ventilateur (100) comprenant : un boîtier (1) définissant une ouverture (2) qui s'étend à travers le boîtier (1) ; un premier canal d'écoulement d'air défini à l'intérieur du boîtier (1), comprenant une première entrée d'air (6), une première sortie d'air (10) et une première roue (4) destinée à entraîner l'air de la première entrée vers la première sortie ; et un second canal d'écoulement d'air défini à l'intérieur du boîtier (1), comprenant une seconde entrée d'air (8), une seconde sortie d'air (16) et une seconde roue (11) destinée à entraîner l'air de la seconde entrée vers la seconde sortie, les première et seconde sorties d'air (10, 16) étant conçues pour aspirer de l'air à travers l'ouverture (2).
EP22729224.0A 2021-05-24 2022-05-17 Ventilateur amélioré Pending EP4348057A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN2021095547 2021-05-24
EP21201123.3A EP4095391A1 (fr) 2021-05-24 2021-10-06 Ventilateur amélioré
PCT/EP2022/063294 WO2022248287A1 (fr) 2021-05-24 2022-05-17 Ventilateur amélioré

Publications (1)

Publication Number Publication Date
EP4348057A1 true EP4348057A1 (fr) 2024-04-10

Family

ID=82016541

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22729224.0A Pending EP4348057A1 (fr) 2021-05-24 2022-05-17 Ventilateur amélioré

Country Status (3)

Country Link
EP (1) EP4348057A1 (fr)
CN (1) CN218760593U (fr)
WO (1) WO2022248287A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022214034A1 (de) 2022-12-20 2024-06-20 Robert Bosch Gesellschaft mit beschränkter Haftung Ventilatoreinheit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103104514B (zh) * 2011-11-09 2016-04-13 杨丁平 一种无叶风扇
JP6141412B2 (ja) * 2012-05-02 2017-06-07 ウー ハ，スン 扇風機
JP6383168B2 (ja) * 2014-03-31 2018-08-29 ツインバード工業株式会社 送風機
CN106015046B (zh) * 2016-06-24 2019-11-12 珠海格力电器股份有限公司 一种塔扇结构
CN109519357A (zh) * 2019-01-29 2019-03-26 杭州坦布科技有限公司 一种摇头式无叶风扇

Also Published As

Publication number Publication date
WO2022248287A1 (fr) 2022-12-01
CN218760593U (zh) 2023-03-28

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