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WO2025082783A1 - Dispositif de séchage - Google Patents

Dispositif de séchage Download PDF

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Publication number
WO2025082783A1
WO2025082783A1 PCT/EP2024/078179 EP2024078179W WO2025082783A1 WO 2025082783 A1 WO2025082783 A1 WO 2025082783A1 EP 2024078179 W EP2024078179 W EP 2024078179W WO 2025082783 A1 WO2025082783 A1 WO 2025082783A1
Authority
WO
WIPO (PCT)
Prior art keywords
fan
air
toroidal
hub portion
heat source
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
PCT/EP2024/078179
Other languages
English (en)
Inventor
Mark Johannes Lelieveld
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
Application filed by Koninklijke Philips NV filed Critical Koninklijke Philips NV
Publication of WO2025082783A1 publication Critical patent/WO2025082783A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/48—Drying by means of hot air
    • 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
    • F04D25/084—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation hand 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
    • 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
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form

Definitions

  • the invention relates to a drying device, such as a hair dryer or a hand dryer.
  • Drying devices such as hairdryers and hand dryers typically include a heating element and a fan for air propulsion, to blow warm air towards an object to be dried (e.g., hair or a hand).
  • Fans used in devices such as hairdryers are typically driven by a motor and, in some cases, significant amounts of energy can be required to drive the motor which in turn drives the fan. A stronger flow of air from the drying device can be achieved by using a larger fan.
  • US2466915A relates to hair drier and contemplates the provision of a portable device conductive to the comfort of a person using the same.
  • CN 116202123 A provides a warmer which comprises a cover body, the cover body is provided with a mounting opening, a heating element provided within the cover body and is used for supplying heat; and a fan assembly is arranged in the mounting opening, and the air supply direction of the fan assembly avoids the heating element.
  • the warmer provided by the invention can be used for radiation warming and can also be used for blowing air for cooling.
  • CN202370869U discloses a clean air cold and hot fan comprising a fan part and an air treatment part.
  • EP3896287B1 discloses a channel-variable cooling and heating circulating fan, comprising a rear net cover, a drive device, a heating component and a fan blade.
  • the drive device and the heating component are arranged inside the rear net cover, and the drive device has a rotatable shaft going through the heating component to connect to the fan blade.
  • CN104314845A discloses a cellular thermal winter and summer axial fan comprising an axial fan and honeycomb heating device.
  • CN116255352A discloses anti-icing fan assembly of anti-icing fan system installed in wind tunnel, has connecting element whose axial ends are coaxially connected with shaft of fan and rotor, and connecting element that is set with channel running through axial ends of connecting element and communicating with channel.
  • KR20110075761A discloses electric fan for blowing cool and warm air in warehouse during summer, has thermoelectric module producing cool or heat air in controller, motor shaft perpendicularly installed in center axis part, and vertical wings driving motor.
  • US2011010958A1 discloses a hair dryer, which includes a handle for holding the same and supporting its blower assembly having a motor driven centrifugal fan assembly, achieves a significant reduction of noise by employing balanced volume inlets above and below the fan rotor, a special fan rotor configuration having blades with airfoil shapes and a curved trailing edges and diffuser ring in its outlet that employs the Coanda effect in the air exiting the dryer.
  • the dryer can also include a resistive heating element to increase the temperature of the exiting air and, includes the necessary switches and cords for operation of its heating element and electric motor.
  • CN108999796B discloses a natural wind/warm wind dual-purpose electric circulating fan, comprising a machine body shell (10) and a base assembly (70) for supporting it, and a grid or net- shaped front cover (60).
  • a machine body shell from back to front coaxially orderly comprises: an electric motor (20), an air guide ring (30), a heating body assembly (40) and a fan blade (50).
  • a drying device such as a hair dryer or a hand dryer, which is capable of providing at least the same drying effect as existing drying devices, but which uses less power, or is more efficient. It would also be desirable to have a drying device that generates less noise during use, compared to existing drying devices that include a fan. The inventor of the present disclosure has recognised that one or both of these improvements may be realised by using a different type of fan in a drying device.
  • a drying device includes, among other features, a toroidal fan for generating a flow of air.
  • a toroidal fan which may have the same size (e.g., diameter) as a traditional axial flow fan, is capable of generating greater air flow than an equivalent (e.g., similar sized) axial flow fan.
  • toroidal fans are typically quieter than fans traditionally used in drying devices, meaning that devices in which toroidal fans are used can be quieter than devices using traditional fans, providing a better user experience.
  • a drying device comprising a housing having an air inlet via which air is received into the drying device and an air outlet via which air is propelled from the drying device; and a toroidal fan disposed at least partially within the housing, the toroidal fan configured to generate a flow of air along an airflow path towards the air outlet of the housing.
  • the toroidal fan may include a hub portion; and at least one blade, each of the at least one blade connected to the hub portion at a first connection position and at a second connection position, such that a space is formed between the at least one blade and the hub portion.
  • the first connection position and the second connection position may be at different distances along the length of the hub portion.
  • the drying device may further comprise at least one heat source disposed at least partially within the housing, the at least one heat source configured such that heat generated by the at least one heat source is transferred to the flow of air generated by the toroidal fan.
  • the at least one heat source may be located concentrically around the hub portion.
  • the at least one heat source may be located at least partially within the space formed between the at least one blade and the hub portion.
  • the at least one heat source is located in at least one of the following positions: i) between the toroidal fan and the air inlet; and ii) between the toroidal fan and the air outlet.
  • the at least one heat source may be located at least partially within the hub portion.
  • the housing may comprise a wall.
  • the wall may comprise a recessed channel configured to receive part of the at least one blade of the toroidal fan.
  • the recessed channel may be positioned concentrically around the hub portion.
  • the drying device may further comprise a motor configured to drive the toroidal fan.
  • the motor may, for example, be located at least partially within the hub portion.
  • the drying device may be configured to at least partially dry a body part of a user.
  • the drying device may comprise a hairdryer or a hand dryer.
  • the drying device may comprise a hairdryer and may further comprise a handle to be held by a user during use.
  • Fig. 1 is a schematic illustration of an example of a drying device according various embodiments
  • FIG. 2 is an illustration of an example of part of a toroidal fan
  • Fig. 3 is a schematic illustration of an example of a drying device according various embodiments
  • Fig. 4 is a schematic illustration of an example of a drying device according various embodiments.
  • Fig. 5 is a schematic illustration of an example of a drying device according various embodiments.
  • Fig. 6 is a schematic illustration of an example of a drying device according various embodiments.
  • Fig. 7 is a schematic illustration of an example of a drying device according various embodiments.
  • Fig. 8 is a schematic illustration of an example of a hair dryer
  • Fig. 9 is a schematic illustration of an example of a hand dryer.
  • drying devices such as hand dryers and hair dryers.
  • the drying devices disclosed herein include features intended to improve the efficiency of such devices when compared to existing drying devices, and to improve the experience of a user of such devices, by generating less noise than existing drying devices.
  • a different type of fan than is traditionally used in such drying devices, namely a toroidal fan.
  • each blade extends from a central hub/axis to a blade tip. It is the tips of the blades that create drag and energy losses, and also generate noise as the fan rotates.
  • Each blade of a toroidal fan does not have a blade tip.
  • a blade of a toroidal fan may be considered to be equivalent to two adjacent axial flow fan blades merged together at their tips.
  • a blade of a toroidal fan may be connected to a hub portion, shaft or axis at two positions.
  • Each blade of a toroidal fan may be arch-shaped or n-shaped.
  • Existing drying devices include fans having a plurality of blades (e.g., twisted blades) attached to or extending from a central core or hub.
  • a motor is used to drive the fan, which causes the hub and the blades to rotate about a central axis.
  • a flow of air is generated, which helps to dry objects.
  • propellers such as propellers installed on boats and aeroplanes. As a propeller rotates, air is forced in one direction, causing movement of the propeller (and any object attached to the propeller) in the opposite direction.
  • a drying device includes a toroidal fan rather than a traditional fan.
  • Fig. 1 is a schematic illustration of an example of a drying device 100 according to various embodiments.
  • the drying device 100 comprises a housing 102 having an air inlet 104 via which air is received into the drying device and an air outlet 106 via which air is propelled from the drying device.
  • the drying device 100 further comprises a toroidal fan 108 disposed at least partially within the housing 102, the toroidal fan being configured to generate a flow of air along an airflow path towards the air outlet 106 of the housing.
  • the drying device 100 described herein with reference to the figures may include features other than those shown.
  • the drying device may include one or more components for supporting the toroidal fan 108 or other components relative to the housing 102 or relative to one another, an axis on which the toroidal fan can rotate, a mechanism for driving the toroidal fan, a power source or a mechanism for providing power to the toroidal fan, and so on.
  • the drying device 100 may further comprise a motor (not shown) configured to drive the toroidal fan 108.
  • the motor may be located next to (e.g., along the axis of) the toroidal fan 108, for example between the toroidal fan and the air inlet 104 or between the toroidal fan and the air outlet 106. In other embodiments, however, the motor may be located at least partially within the hub portion 110 of the toroidal fan 108. By locating the motor within the hub portion 110 of the toroidal fan 108, savings may be made in terms of space and volume occupied by components within the drying device 100, meaning the drying device can be smaller than if the motor is positioned next to the toroidal fan.
  • An advantage of using the toroidal fan 108 is that it is capable of generating an improved flow of air (e.g., more powerful) than a traditional fan, and may generate less noise.
  • the toroidal fan 108 can be driven at a slower rotational speed (e.g., a lower number of rotations per minute, RPM) while still achieving the same drying effect as a traditional fan used in existing drying devices.
  • RPM rotational speed
  • the toroidal fan 108 can be even quieter, and can be driven with less power (if driven at a lower RPM), potentially reducing running costs and energy usage, and providing a better user experience.
  • the toroidal fan 108 is disposed fully within the housing 102. However, in other examples, part of the toroidal fan 108 may extend partially outside of the housing 102.
  • One or both of the air inlet 104 and the air outlet 106 may include a grill or grating (not shown) configured to at least partially cover the air inlet and/or air outlet, to prevent objects (e.g., fingers) from being inserted into the housing 102 via the air inlet and/or air outlet.
  • a grill or grating may serve as a safety mechanism, reducing the likelihood that a person may be injured by placing their finger inside the drying device 100, and reducing the likelihood that other objects may be damaged by being inserted or falling into the drying device, where such fingers or objects could be struck by the toroidal fan 108 as it rotates.
  • the air inlet 104 may, for example, be configured to receive ambient air from outside the housing 102.
  • the air may, for example, be drawn into the air inlet 104 by the rotation of the toroidal fan 108.
  • the air may then be propelled along an airflow path indicated by the arrows A towards the air outlet 106.
  • Air propelled out of the air outlet 106 of the drying device 100 may be directed towards an object that is to be dried, such as air or hands of a user.
  • the toroidal fan 108 may take many different forms, but in general may include a hub portion 110 and at least one blade 112. In the example shown in Fig.
  • the toroidal fan 108 includes a first blade 112a, a second blade 112b, a third blade 112c and a fourth blade 112d. In other examples, however, the toroidal fan 108 may include more or fewer blades.
  • the hub portion 110 serves as a core, to which the or each blade 112 is connected or from which the or each blade extends.
  • Fig. 2 is an illustration of an example of a toroidal fan 108’.
  • the toroidal fan 108’ is a variation of the toroidal fan 108 shown in Fig. 1. While generally the toroidal fan 108, 108’ may include at least one blade 112, the toroidal fan 108’ shown in Fig. 2 includes a hub portion 110 and a single blade 112’ (e.g., the first blade). Each blade of the at least one blade (e.g., the first blade 112’) is connected to the hub portion 110 at a first connection position and at a second connection position, such that a space is formed between the at least one blade (e.g., the first blade in this example) and the hub portion. As with the example shown in Fig. 1, the first blade 112’ of the toroidal fan 108’ may have a curved formation or may be arch-shaped, such that a space is formed between the hub portion 110 and the part of the first blade between the first connection position and the second connection position.
  • the at least one blade may comprise a first blade 112a and a second blade 112b.
  • the first connection position is at a first distance along a length of the hub portion
  • the second connection position is at a second distance along the length of the hub portion.
  • the first connection position and the second connection position are at different distances along the length of the hub portion.
  • the two ends of a blade 112 are connected at different distances along the length of the hub portion 110.
  • One or more of the blades 112 may be arch-shaped, such that the ends of the blade are connected to (e.g., formed integrally with or attached to) the hub portion 110, and the part of the blade between the ends is spaced apart from the hub portion.
  • the drying device 100 may be used to dry an object using ambient (e.g., cold) air.
  • air may be heated by the drying device before it is propelled through the air outlet 106 towards the object to be dried.
  • the air may be heated, for example as it is propelled by the toroidal fan 108.
  • air may be heated actively by a heater or heating device, so that the air propelled from the air outlet 106 of the drying device 100 is warmer than the air drawn into the air inlet 104 of the drying device.
  • the drying device 100 may, in some embodiments, further comprise at least one heat source 302 disposed at least partially within the housing 102, the at least one heat source configured such that heat generated by the at least one heat source is transferred to the flow of air generated by the toroidal fan 108.
  • the heat source 302 may be positioned at various locations within the housing 102, depending on the size and shape of the drying device 100 and on the amount of space available within the housing 102.
  • Fig. 3 is a schematic illustration of an example of the drying device 100 having a heat source 302 at a first position.
  • the at least one heat source 302 may be located concentrically around the hub portion 110.
  • the at least one heat source 302 may be substantially ring-shaped or annular, having a centre point that lies on a central axis of the hub portion 110.
  • the at least one heat source 302 may be located at least partially within the space formed between the at least one blade 112 and the hub portion 110.
  • a ring-shaped heat source 302 e.g., a coil annulus
  • Such a heat source may be attached to the hub portion 110 at a region that does not rotate during use.
  • the at least one heat source 302 may, in some embodiments, be positioned within the space or volume formed between a blade 112 and the hub portion 110. In this way, as the toroidal fan 108 rotates, the blades 112 of the toroidal fan propel warm air (i.e., air that has been heated by the at least one heat source 302) towards the air outlet 106.
  • the at least one heat source 302 may have a size and/or shape based on the clearance between the blades 112 and the hub portion 110, such that, as the toroidal fan 108 rotates, the blades are not obstructed by the at least one heat source.
  • multiple heat sources may be provided within the space formed between the blades 112 and the hub portion 110.
  • multiple heat sources 302 may be connected to spokes extending from part of the hub portion 110 that does not rotate during use.
  • alternative arrangements may be used to provide one or more heat sources 302 within the space formed between the blades 112 of the toroidal fan 108 and the hub portion 110 of the toroidal fan.
  • the heat source(s) may be stationary relative to the toroidal fab 108 as it rotates.
  • the heat source 302 may be connected to a static or stationary part of the hub portion 110.
  • an internal part of the hub portion 110 may remain static (e.g., not rotating with the blades of the toroidal fan 108), and this may support the heat source 302 or provide a connection to the heat source.
  • the hub portion 110 may include a split or gap between the positions where the blades 112 are connected to the hub portion, and the heat source 302 may be connected to a connector within the split or gap-
  • Positioning the at least one heat source 302 within the footprint or volume of the toroidal fan 108 can help to reduce the overall size the drying device 100, since the at least one the source does not need to be placed next to the toroidal fan in this embodiment.
  • arranging the at least one heat source 302 in this way may lead to improvements in efficiency of the drying device 100 since, as the air is heated by the at least one heat source, the air expands and may therefore be propelled at a greater speed through the air outlet 106.
  • the at least one heat source 302 may take any suitable form for providing heat to the surrounding air.
  • the at least one heat source 302 may comprise a coil heater, a “zigzag” heater, a ceramic heater, a ceramic ring, or the like.
  • the at least one heat source 302 may be located between the toroidal fan 108 and the air inlet 104 or between the toroidal fan and the air outlet 106. In some embodiments, a first heat source 302 may be located between the toroidal fan 108 and the air inlet 104 and a second heat source may be located between the toroidal fan and the air outlet 106.
  • Fig. 4 is a schematic illustration of an example of the drying device 100 in which the heat source 302 is located between the toroidal fan 108 and the air outlet 106.
  • the toroidal fan 108 may propel air towards and through or past the heat source 302 such that the temperature of the propelled air increases as it passes the heat source.
  • the heat source 302 may be configured such that air is able to pass through it or past it without significantly being impeded.
  • the heat source 302 may be located next to or outside the air pathway along which areas propelled by the toroidal fan 108, so that the air is heated as the propelled air passes the heat source. In this way, a fast and/or powerful flow of air may be propelled from the drying device 100.
  • Fig. 5 is a schematic illustration of an example of the drying device 100 in which the heat source 302 is located between the air inlet 104 and the toroidal fan 108.
  • the heat source 302 may heat air drawn into the drying device via the air inlet 104, such that the temperature of the air is increased before it is propelled towards the air outlet 106 by the toroidal fan 108.
  • multiple heat sources 302 may be provided within a drying device 100.
  • a first heat source 302 may be provided in the location shown in Fig. 4 and a second heat source may be provided in the location shown in Fig. 5.
  • the at least one heat source 302 may be located at least partially within the hub portion 110 of the toroidal fan 108.
  • Fig. 6 is a schematic illustration of an example of the drying device 100 in which the heat source 302 is located within the hub portion 110.
  • the heat source 302 may be configured to heat the hub portion 100 and therefore the toroidal fan 108 and/or air surrounding the hub portion.
  • a toroidal fan 108 helps to reduce the noise generated compared to a traditional fan.
  • the noise generated may be reduced further by configuring the drying device 100 such that the toroidal fan rotates at least partially within a channel.
  • Fig. 7 is a schematic illustration of a further example of the drying device 100 in which a channel is formed to aid with the reduction of noise generated by the toroidal fan 108.
  • the housing 102 of the drying device 100 may comprise a wall, and the wall may comprise a recessed channel 702 configured to receive part of the at least one blade of the toroidal fan 108.
  • a recessed channel 702 configured to receive part of the at least one blade of the toroidal fan 108.
  • the recessed channel 702 may be ring-shaped.
  • the recessed channel 702 may be positioned concentrically around the hub portion 110.
  • the toroidal fan 108 may be positioned such that an end or tip of each blade 112 is within the recessed channel 702. In this way, amount of noise that is generated at the end or tip of each blade 112 of the toroidal fan 108 is reduced, due to the interaction of soundwaves with walls of the recessed channel.
  • the toroidal fan 108 is shown to be narrower than (e.g., not as wide as) the toroidal fan shown in the other figures.
  • a narrower fan may be used when it is intended to keep the size of the drying device 100 small.
  • the drying device 100 disclosed herein may be suitable for drying any object, but may be configured to at least partially dry a body part of a user.
  • the drying device 100 may comprise a hair dryer or a hand dryer.
  • Fig. 8 is a schematic illustration of an example of a hair dryer 800
  • Fig. 9 is a schematic illustration of an example of a hand dryer 900.
  • the hair dryer 800 may comprise the drying device 100 and further comprises a handle 802 to be held by a user during use.
  • the handle 802 may include one or more controls, such as buttons or switches that the user may use to operate the hair dryer 800, for example to switch the hairdryer on and off, to adjust the speed of rotation of the toroidal fan 108 and/or to adjust the temperature to which air is to be heated by the heat source 302.
  • the hand dryer 900 may comprise the drying device 100, and may be configured such that a user positions their hands beneath the air outlet 106 to be dried.
  • Other configurations of the drying device 100 may be implemented into devices used to dry other items.
  • a drying device that can provide an improved user experience due to reduced noise generation (e.g., as a result of using a toroidal fan instead of a traditional noisier fan) and that is capable of effectively and efficiently drying an object.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Selon un aspect, l'invention concerne un dispositif de séchage (100) comprenant un boîtier (102) ayant une entrée d'air (104) par l'intermédiaire de laquelle de l'air est reçu dans le dispositif de séchage et une sortie d'air (106) par l'intermédiaire de laquelle de l'air est expulsé à partir du dispositif de séchage ; et un ventilateur toroïdal (108) disposé au moins partiellement à l'intérieur du boîtier, le ventilateur toroïdal étant configuré pour générer un flux d'air le long d'un trajet d'écoulement d'air en direction de la sortie d'air du boîtier.
PCT/EP2024/078179 2023-10-17 2024-10-08 Dispositif de séchage Pending WO2025082783A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23204031.1A EP4541223A1 (fr) 2023-10-17 2023-10-17 Dispositif de séchage
EP23204031.1 2023-10-17

Publications (1)

Publication Number Publication Date
WO2025082783A1 true WO2025082783A1 (fr) 2025-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/078179 Pending WO2025082783A1 (fr) 2023-10-17 2024-10-08 Dispositif de séchage

Country Status (2)

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EP (1) EP4541223A1 (fr)
WO (1) WO2025082783A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20250198417A1 (en) * 2023-12-18 2025-06-19 The Boeing Company Vehicle fan installation assembly

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Publication number Priority date Publication date Assignee Title
US2466915A (en) 1946-07-12 1949-04-12 Stanley R Shields Hair drier
US20110010958A1 (en) 2009-07-16 2011-01-20 Wayne Clark Quiet hair dryer
KR20110075761A (ko) 2009-12-29 2011-07-06 윤근수 사방향 냉온풍기
CN202370869U (zh) 2011-10-12 2012-08-08 张天文 一种洁净空气冷热扇
CN104314845A (zh) 2014-04-07 2015-01-28 彭萍芳 蜂窝热式冬夏轴流风扇
CN108999796A (zh) 2017-06-06 2018-12-14 深圳市联创电器实业有限公司 自然风/暖风两用电循环扇
EP3896287B1 (fr) 2020-04-14 2022-07-13 Shenzhen Lianchuang Technology Group Co., Ltd Ventilateur de circulation à canal variable pour le refroidissement et le chauffage
CN116202123A (zh) 2021-11-30 2023-06-02 广东美的环境电器制造有限公司 取暖器
CN116255352A (zh) 2023-05-11 2023-06-13 中国空气动力研究与发展中心低速空气动力研究所 一种防冰风扇组件以及防冰风扇系统

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466915A (en) 1946-07-12 1949-04-12 Stanley R Shields Hair drier
US20110010958A1 (en) 2009-07-16 2011-01-20 Wayne Clark Quiet hair dryer
KR20110075761A (ko) 2009-12-29 2011-07-06 윤근수 사방향 냉온풍기
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