CN102878113A - Fan - Google Patents

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Publication number
CN102878113A
CN102878113A CN2012104228268A CN201210422826A CN102878113A CN 102878113 A CN102878113 A CN 102878113A CN 2012104228268 A CN2012104228268 A CN 2012104228268A CN 201210422826 A CN201210422826 A CN 201210422826A CN 102878113 A CN102878113 A CN 102878113A
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CN
China
Prior art keywords
housing
fan
provided
air
wind
Prior art date
Application number
CN2012104228268A
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Chinese (zh)
Inventor
李起武
Original Assignee
李起武
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.)
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Application filed by 李起武 filed Critical 李起武
Priority to CN2012104228268A priority Critical patent/CN102878113A/en
Publication of CN102878113A publication Critical patent/CN102878113A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/08Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14Jet 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
    • F04F5/16Jet 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

Abstract

The invention discloses a fan. The fan comprises a shell and a fan blade fixed in the shell and also comprises an air outlet device which is arranged on the shell, is used for wind discharge and is not provided with the fan blade. As the shell of the fan is provided with the air outlet device, air in the fan can be blown out from the air outlet device, the air outlet device is not internally provided with the fan- blade, users are avoided to be hurt because the fan blade rotates when the fan is in use, and then the users can securely use the fan, and is not worried about the fan blade.

Description

—种风扇 - kind of fan

技术领域 FIELD

[0001 ] 本发明涉及家用电器领域,更具体的说,涉及一种风扇。 [0001] The present invention relates to the field of household appliances, more particularly, to a fan.

背景技术 Background technique

[0002] 人们日常用的风扇大多为两种,一种是吊扇,吊扇的扇叶完全暴露在外面,没有任何的保护件,有很大的危险性;另一种是台式风扇,台式风扇一般都设置有保护罩,扇叶放置在保护罩内,以免伤害到使用者,但是保护罩上有很多空隙,如果使用者的手指,尤其是小孩子的手指伸入到保护罩内,就有可能被扇叶伤害。 [0002] everyday fan used mostly two, one is a ceiling fan, ceiling fan blades completely exposed, without any protection member, there is great danger; the other is a desktop fan, desktop fan in general are provided with a protective cover, fan placed in the protective cover, so as not to injure a person, but there are many gaps protective cover, if the user's fingers, especially a child's finger extends into the protective cover, it is possible injured fan.

发明内容 SUMMARY

[0003] 本发明所要解决的技术问题是提供一种扇叶对使用者造成伤害减少或避免扇叶对使用者造成伤害的风扇。 [0003] The present invention solves the technical problem is to provide a user causes the blade to reduce or avoid damage to the fan blade damage to a user.

[0004] 本发明的目的是通过以下技术方案来实现的:一种风扇,包括壳体以及固定在壳体内的扇叶,所述风扇还包括设置在壳体上用于出风的无扇叶的出风装置。 [0004] The object of the present invention is achieved by the following technical solutions: A fan comprising a fan housing and secured within the housing, said fan further comprising a fan disposed for non-wind on the housing the air outlet device.

[0005] 优选的,所述壳体上设有用于进风的进风口,所述出风装置上设有用于出风的出风口。 [0005] Preferably, the air inlet is provided for the inlet of the housing provided with the said means for the wind outlet of the wind. 从而出风装置从出风口处将从进风口输送的风吹出,实现出风装置内无扇叶设置,避免因扇叶旋转而伤害到使用者。 So that the wind from the air outlet means from the inlet conveyor wind, the wind to achieve a bladeless apparatus is provided to avoid damage to the blade rotation user.

[0006] 优选的,所述出风装置设置在壳体的顶部,所述出风装置和壳体之间设置有用于出风的风道。 [0006] Preferably, said air outlet means disposed at the top of the housing, the air between the device and a housing provided for the air duct. 在出风装置和壳体之间设置风道,通过风道将从壳体内扇叶产生的风输送到出风装置内,从而吹出风;将出风装置设置在壳体的顶部可增强壳体的稳定性,且方便人们使用。 Air outlet means disposed between the housing and the duct, the wind generated by the fan duct from the inner housing into the air delivery means so that the wind blowing; the air outlet means disposed at the top of the housing can be enhanced housing stability, and easy for people to use.

[0007] 优选的,所述出风装置设置在壳体的边侧,所述出风装置和壳体之间设置有用于出风的风道。 [0007] Preferably, said air outlet means provided on the housing side, is provided between the air outlet device and the housing for the air duct. 在出风装置和壳体之间设置风道,通过风道将从壳体内扇叶产生的风输送到出风装置内,从而吹出风;将出风装置设置在壳体边侧是设置出风装置的另一种方式。 Air outlet means disposed between the housing and the duct, the wind generated by the fan duct from the inner housing into the air delivery means so that the wind blowing; means disposed at the air outlet side of the casing is provided an air another embodiment of the apparatus.

[0008] 优选的,所述壳体包括前壳和后壳,所述前壳和后壳对应扇叶位置分别设置有进风口。 [0008] Preferably, the housing includes a front shell and a rear shell, the front and rear covers are provided corresponding to the position of the blade inlet. 这是设置进风口的一种具体方式,这样在前壳和后壳上分别设置进风口,从而增大空气的进入量,进而增加扇叶为出风装置输送的风量,使风扇吹出的风增大。 This is a specific set of air inlet, an air inlet arranged so that the front and rear covers, respectively, thereby increasing the amount of air entering, thereby increasing the air flow for the blades of wind means of transport, the wind blown by the fan Big.

[0009] 优选的,所述进风口为条形结构且均布在壳体上。 [0009] Preferably, the air inlet structure and a stripe are distributed on the housing. 这是设置进风口的一种具体结构,条形结构的进风口对应扇叶设置,从而使空气进入壳体内的效果更佳。 This air inlet is provided in a particular configuration, the air inlet structure corresponding blade strip is provided, so that the air within the housing into the better effect.

[0010] 优选的,所述壳体上设有垂直所述进风口的加强筋。 [0010] Preferably, the housing is provided perpendicular to the intake air of the bead. 设置加强筋主要是为了增强进风口处的强度,防止因设置进风口而导致进风口处的结构受损。 Reinforcing ribs is mainly to enhance the strength of the air inlet, to prevent damage caused by setting the air inlet structure at the air inlet.

[0011] 优选的,所述壳体底部设有用于支撑风扇的支撑架。 [0011] Preferably, the housing is provided with a bottom support bracket for supporting the fan. 设置支撑架方便人们使用风扇,而且防止壳体直接与放置物接触,从而避免其受到摩擦而受损。 A fan disposed bracket facilitate people, but also to prevent objects placed in direct contact with the housing, thereby preventing damage thereof by friction.

[0012] 优选的,所述壳体底部设有用于进风的底部进风口。 [0012] Preferably, the bottom of the housing is provided with a bottom inlet for the intake of air. 由于壳体底部设置有用于支撑壳体的支撑架,则壳体在放置过程中与放置物之间有一定的距离,从而在壳体底部上设置底部进风口就可增大进入壳体内的空气量,从而增加扇叶为出风装置输送的风量,使风扇吹出的风增大。 Since the housing is provided with a bottom support frame for supporting the housing, the housing is placed at a certain distance with the placement process was set so that the bottom of the air inlet on the bottom of the housing can increase the air entering the casing amount, thereby increasing the air flow for the blades of wind means of transport, the fan blowing air increases.

[0013] 优选的,所述底部进风口为圆形且均布在壳体底部,形成矩形结构。 [0013] Preferably, the bottom air inlet is circular and are distributed in the bottom of the housing, forming a rectangular structure. 这是设置底部进风口的一种具体结构,这样设置方便制造。 This is a particular structure is provided at the bottom of the air inlet, so that ease of manufacture is provided.

[0014] 本发明由于在风扇壳体上设置一出风装置,风扇内的风就可从出风装置内吹出,而出风装置内并无扇叶,从而避免风扇在工作时因扇叶的旋转而伤害到使用者,这样使用者就可以放心的使用,而不用担心扇叶的问题。 [0014] Since the present invention is provided an air outlet device on the fan casing, the fan air can be blown from the air outlet means, the blades out of the wind is no means to avoid due to the fan blade at work rotation of harm to the user, so that the user can safely use without worrying about the problem blades.

附图说明 BRIEF DESCRIPTION

[0015] 图I是本发明实施例一所述风扇的结构示意图; [0015] FIG. I is a schematic structural diagram of a fan of the embodiment of the present invention;

[0016] 图2是本发明实施例一所述风扇另一视角的结构示意图。 [0016] FIG. 2 is a perspective schematic view of another embodiment of the fan according to the present invention, one case.

[0017] 其中:1、如壳;11、电源控制开关;2、后壳;21、进风口;22、加强筋;23、插孔;24、 支撑架;25、底部进风口;3、出风装置;31、出风口。 [0017] wherein: 1, such as the housing; 11, power control switch; 2, the rear housing; 21, air inlet; 22, stiffeners; 23 jack; 24, support frame; 25, a bottom air inlet; 3, the wind means; 31, outlet.

具体实施方式 Detailed ways

[0018] 下面结合附图和较佳的实施例对本发明作进一步说明。 The drawings and the preferred embodiments of the present invention will be further described [0018] below in conjunction.

[0019] 本发明公开一种风扇,包括壳体以及固定在壳体内的扇叶,作为本发明所述风扇实施例一,如图I和图2所示,壳体上设置有用于进风的进风口21,外界空气就可通过进风口21进入壳体内,然后从出风口处将风吹出;所述风扇还包括设置在壳体上用于出风的出风装置3,出风装置3上设置有用于出风的出风口31,从而风扇内的产生的风就由出风装置3中吹出;另外,所述出风装置3内无扇叶,从而避免风扇在工作时因扇叶的旋转而伤害到使用者,这样使用者就可以放心使用,而不用担心扇叶的问题。 [0019] The present invention discloses a fan comprising a fan housing and is fixed in the housing, as the embodiment of the present invention, a fan, as shown in FIGS. I and 2, is provided for the inlet of the housing air inlet 21, ambient air can enter through inlet 21 within the housing, and then to the outlet from the air blowout; further includes the fan out of the wind for the wind devices 3 in the housing, the wind device 3 is provided for a wind outlet 31, resulting in the wind by the fan 3, the air blowing means; Further, the air outlet means without the blades 3, due to the rotation of the fan blades so as to avoid at work the injury to the user, so that the user can be assured, without worrying about the problem blades.

[0020] 本实施例中,如图I所示,所述出风装置3设置在壳体的顶部,所述出风装置3和壳体之间设置有用于出风的风道,在出风装置3和壳体之间设置风道,通过风道将从壳体内扇叶产生的风输送到出风装置3内,从而吹出风;将出风装置3设置在壳体的顶部可增强壳体的稳定性,且方便人们使用。 [0020] In this embodiment, as shown in FIG. I, the air outlet means disposed at the top of the housing 3, said means has an air duct for the air between the housing 3 and arranged in the wind means disposed between the air duct and the housing 3, the wind generated by the fan blade within the housing from the duct to an air conveying device 3, so that the wind blowing; the air outlet means disposed at the top of the housing 3 can be enhanced housing stability, and easy for people to use.

[0021] 如图I和图2所示,所述壳体包括前壳I和后壳2,前壳I与后壳2通过螺丝固定在一起,所述前壳I和后壳2对应扇叶位置分别设置有进风口21 ;这是设置进风口21的一种具体方式,这样在前壳I和后壳2上分别设置进风口21,从而增大空气的进入量,进而增加扇叶为出风装置3输送的风量,使风扇吹出的风增大。 [0021] FIG. I and 2, the housing includes a front shell and a rear case I 2, I and the front shell rear case 22 secured together by a screw, the front case and a rear case I 2 corresponding to the blade positions are respectively provided with inlet 21; this is set to a specific inlet 21, the inlet 21 are arranged so that the upper case and the rear case 2 front I, thereby increasing the amount of air entering, thereby increasing the blade is air volume air delivery means 3, so that air blown by the fan is increased. 本实施例在前壳和后壳上分别设置有进风口,然而,本实施例也可以单独在前壳上或单独在后壳上设置进风口,都能够实现进风的效果。 The present embodiment are each provided with an air inlet on the front case and the rear case, however, the present embodiments may also be separate or separately provided on the front air inlet casing in the rear case, we are able to achieve the effect of the inlet air.

[0022] 在本实施例中,所述壳体底部设有用于支撑风扇的支撑架24,设置支撑架24方便人们使用风扇,而且防止壳体直接与放置物接触,从而避免其受到摩擦而受损;在本实施例中,所述支撑架24设置两个且位于壳体底部两侧,并相对设置。 [0022] In the present embodiment, the housing is provided with a bottom support frame for supporting the fan 24, the support frame 24 is provided to facilitate people to use a fan, but also to prevent objects placed in direct contact with the housing, thereby preventing by friction by which loss; in the present embodiment, the support frame 24 is provided and located on two sides of the bottom of the housing, and disposed opposite. 如图2所示,在所述支撑架24之间设置有用于进风的底部进风口25,由于壳体底部设置有用于支撑壳体的支撑架24,则壳体在放置过程中与放置物之间有一定的距离,从而在壳体底部上设置底部进风口25就可增大进入壳体内的空气量,从而增加扇叶为出风装置3输送的风量,使风扇吹出的风增大。 As shown, provided with a bottom for the supply air inlet 25 between the support frame 24, since the support frame is provided for supporting the housing bottom of the housing 24, the housing during placement and was placed 2 between certain distance, thereby setting a bottom air inlet 25 increases the amount of air can enter the housing on the bottom of the housing, thereby increasing the air flow conveyed to the blades of the wind device 3, so that air blown by the fan is increased. 在本实施例中,所述底部进风口25为圆形且均布在壳体底部,形成矩形7结构,这是设置底部进风口25的一种具体结构,这样设置方便制造。 In the present embodiment, the bottom air inlet 25 is circular and are distributed in the bottom of the housing 7 is formed a rectangular structure, which is a specific configuration of the bottom of the air inlet 25 is provided, so that ease of manufacture is provided. 然而也可设置成其他结构,比如设置成环形结构,底部进风口一环绕一环,这样设置也是可以的。 However, other configurations can also be provided, such as provided in a ring configuration, an air inlet surrounding a bottom ring, arranged such are possible.

[0023] 如图I所示,所述前壳2上设置一用于控制风扇开、关的电源控制开关22,在本实施例中,所述电源控制开关22为按压开关,按压一次打开电源,按压两次关闭开关,然后,循环开、关,使用方便。 [0023] As shown in FIG I, the front housing 2 is provided on a fan for controlling the opening and closing the power control switch 22, in the present embodiment, the power supply controlling switch 22 is a push switch, is pressed once to open the power , off switch is pressed twice, then cycle on and off, and easy to use. 所述壳体在按压开关处设置有用于增加按压开关周围强度的加强筋,从而防止因压力过大而使壳体损坏。 The housing is provided with a reinforcing rib for increasing the strength of the push switch around in the push switch, thereby preventing excessive pressure due to damage to the housing.

[0024] 如图2所示,所述后壳3上设置一用于充电的插孔23,所述插孔23设置在壳体的下端且位于所述后壳2上的进风口21中部,从图中可以看到,后壳2上设有垂直所述进风口21的加强筋22,加强筋22将进风口21分成等长的两部分,插孔23刚好设置在加强筋22处,从而这样设置可增强插孔23处的强度,防止插孔23受损;另外,设置加强筋22也能够增强进风口21处的强度,防止因设置进风口21而导致进风口21处的结构受损。 [0024] As shown in FIG. 2, the rear jack 233 provided on a casing for charging, the insertion hole 23 provided in the middle of the lower end of the housing and the rear air inlet located on the housing 221, can be seen from the figure, the rear housing 2 is provided with vertical reinforcing ribs of the air inlet 21 and 22, the bead 22 inlet 21 into equal length two parts, the jack 23 is provided just at the bead 22, so that such settings can reinforce the strength of the receptacle 23, prevent damage to jack 23; Further, the rib 22 can be provided to enhance the strength of the air inlet 21, air inlet 21 is provided to prevent damage caused by the structure 21 at inlet . 本实施例中,所述壳体上设有垂直所述进风口21的加强筋22,如图I所示,则前壳I上也设有垂直于所述进风口21的加强筋22,从而加强筋22能够增强进风口21处的强度,防止因设置进风口21而导致进风口21处的结构受损。 In this embodiment, the reinforcing ribs provided perpendicular to the air inlet 21 of the housing 22, as shown in FIG. I, then I is also provided on the front housing perpendicular to the inlet 21 of the reinforcing ribs 22, thereby 22 can enhance the strength of the reinforcing ribs 21 at the air inlet, the air inlet 21 is provided to prevent the lead inlet 21 of the structural damage. ·[0025] 在本实施例中,所述出风口31设置在出风装置的前端。 * [0025] In the present embodiment, the air outlet 31 is provided at the front end of the wind device.

[0026] 作为本发明风扇的实施例二与实施例一的区别在于,所述出风装置设置在壳体的一侧,这是设置出风装置的又一种具体方式,这样设置方便人们在睡觉时候使用,方便控制风向。 [0026] As an embodiment of the present invention, the fan and the difference between two of the first embodiment in that the air outlet means disposed in a side of the housing, and which is provided illustrating a specific means of wind, so that people are arranged to facilitate sleep time use, easy to control the wind.

[0027] 作为本发明风扇的实施例三与实施例二的区别在于,所述壳体的另一侧也设置有出风装置,即壳体的两侧分别设置有出风装置,所述两侧的出风装置对应设置,这样设置就可以增大风扇吹风的控制范围,这样设置即方便使用,而风量又不会太大,尤其适合使用者在睡觉的时候使用。 [0027] As an embodiment of the present invention is a fan with three differences according to the second embodiment in that the other side of the housing is also provided with air outlet means, i.e., sides of the housing are respectively provided with air outlet means, the two air outlet means provided corresponding side, arranged so that the control range can be increased blowing fan so disposed that is easy to use, and the air volume is not too large, particularly suitable for use when the user is sleeping.

[0028] 本发明所述的出风装置直接固定在壳体上与壳体一体连接,这样设置方便制造。 [0028] The air outlet device according to the present invention is integrally connected to the housing directly fixed to the housing, so that ease of manufacture is provided.

[0029] 本发明所述的出风装置也可设置在壳体底部,其中,在壳体底部设置一较高的支撑架,在支撑架之间设置出风装置,同样可以实现出风装置内无扇叶。 [0029] The air outlet device according to the present invention may also be provided at the bottom of the housing, wherein the housing is provided at the bottom of a high support frame, the support frame is provided between the air outlet means, may be implemented within the same air outlet device no blades.

[0030] 以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明,不能认定本发明的具体实施只局限于这些说明。 [0030] The above contents with the specific preferred embodiments of the present invention is further made to the detailed description, specific embodiments of the present invention should not be considered limited to these descriptions. 对于本发明所属技术领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干简单推演或替换,都应当视为属于本发明的保护范围。 Those of ordinary skill in the art for the present invention, without departing from the spirit of the present invention, can make various simple deduction or replacement, should be deemed to belong to the scope of the present invention.

Claims (10)

1. 一种风扇,包括壳体以及固定在壳体内的扇叶,其特征在于,所述风扇还包括设置在壳体上用于出风的无扇叶的出风装置。 1. A fan, comprising a blade housing and secured within the housing, wherein the fan further comprises an air outlet means arranged to wind without blades on the housing.
2.如权利要求I所述的风扇,其特征在于,所述壳体上设有用于进风的进风口,所述出风装置上设有用于出风的出风口。 2. The fan according to claim I, wherein the air inlet is provided on the housing for the inlet, the outlet is provided with a means for the wind to the wind.
3.如权利要求2所述的风扇,其特征在于,所述出风装置设置在壳体的顶部,所述出风装置和壳体之间设置有用于出风的风道。 The fan according to claim 2, wherein said air duct is provided between the wind at the top of the housing means is provided, said air outlet means and the housing for the wind.
4.如权利要求2所述的风扇,其特征在于,所述出风装置设置在壳体的边侧,所述出风装置和壳体之间设置有用于出风的风道。 The fan according to claim 2, wherein said air outlet passage means disposed between the air side of the casing is disposed, said housing means and air outlet for the wind.
5.如权利要求2所述的风扇,其特征在于,所述壳体包括前壳和后壳,所述前壳和后壳对应扇叶位置分别设置有进风口。 The fan according to claim 2, wherein said housing includes a front shell and a rear shell, the front and rear covers are provided corresponding to the position of the blade inlet.
6.如权利要求5所述的风扇,其特征在于,所述进风口为条形结构且均布在壳体上。 6. The fan according to claim 5, characterized in that said air inlet and a stripe structure on the housing uniformly distributed.
7.如权利要求6所述的风扇,其特征在于,所述壳体上设有垂直所述进风口的加强筋。 7. The fan according to claim 6, wherein said reinforcing ribs provided perpendicular to the air inlet of the housing.
8.如权利要求2所述的风扇,其特征在于,所述壳体底部设有用于支撑风扇的支撑架。 8. The fan according to claim 2, characterized in that the supporting frame is provided for supporting the bottom of the fan housing.
9.如权利要求8所述的风扇,其特征在于,所述壳体底部设有用于进风的底部进风口。 9. The fan according to claim 8, characterized in that the bottom is provided for the intake air inlet of the housing bottom.
10.如权利要求9所述的风扇,其特征在于,所述底部进风口为圆形且均布在壳体底部,形成矩形结构。 10. The fan according to claim 9, characterized in that the bottom inlet is circular and uniformly distributed in the bottom of the housing, forming a rectangular structure.
CN2012104228268A 2012-10-30 2012-10-30 Fan CN102878113A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56167897A (en) * 1980-05-28 1981-12-23 Toshiba Corp Fan
CN101825096A (en) * 2009-03-04 2010-09-08 戴森技术有限公司 Fan assembly
CN201650890U (en) * 2010-03-09 2010-11-24 许国范 Bladeless fan
CN201687781U (en) * 2010-06-04 2010-12-29 蔡炳照 Fan with no fan blade
CN201739198U (en) * 2010-05-27 2011-02-09 李德正 Bladeless electric fan
AU2011101166A4 (en) * 2007-09-04 2011-10-13 Dyson Technology Limited A fan
GB2479659A (en) * 2009-03-04 2011-10-19 Dyson Technology Ltd Tilting fan with an interlocking mechanism using rails

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56167897A (en) * 1980-05-28 1981-12-23 Toshiba Corp Fan
AU2011101166A4 (en) * 2007-09-04 2011-10-13 Dyson Technology Limited A fan
CN101825096A (en) * 2009-03-04 2010-09-08 戴森技术有限公司 Fan assembly
GB2479659A (en) * 2009-03-04 2011-10-19 Dyson Technology Ltd Tilting fan with an interlocking mechanism using rails
CN201650890U (en) * 2010-03-09 2010-11-24 许国范 Bladeless fan
CN201739198U (en) * 2010-05-27 2011-02-09 李德正 Bladeless electric fan
CN201687781U (en) * 2010-06-04 2010-12-29 蔡炳照 Fan with no fan blade

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