CN203067322U - 风扇 - Google Patents

风扇 Download PDF

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CN203067322U
CN203067322U CN201320030559XU CN201320030559U CN203067322U CN 203067322 U CN203067322 U CN 203067322U CN 201320030559X U CN201320030559X U CN 201320030559XU CN 201320030559 U CN201320030559 U CN 201320030559U CN 203067322 U CN203067322 U CN 203067322U
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fan
impeller housing
impeller
housing
lip ring
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A.F.阿特金森
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Dyson Technology Ltd
Dyson Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • B60H1/08—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator
    • B60H1/10—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator the other radiator being situated in a duct capable of being connected to atmosphere outside vehicle
    • B60H1/12—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant from other radiator than main radiator the other radiator being situated in a duct capable of being connected to atmosphere outside vehicle using an air blower
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/005—Sealing means between non relatively rotating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • 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
    • F04D29/08—Sealings
    • F04D29/083—Sealings 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal 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
    • F04D29/60—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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • 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

Abstract

一种风扇，包括外壳和叶轮壳体，外壳具有进气口和出气口，叶轮壳体被定位在外壳内。叶轮被提供在叶轮壳体内，用于产生沿从进气口延伸穿过叶轮壳体到出气口的路径的空气流。电机用于驱动叶轮，电机被定位在电机壳体内，电机壳体被连接到叶轮壳体。泡沫环形密封件被定位在叶轮壳体和座之间，以阻止空气在叶轮壳体和外壳之间泄漏。多个弹性支撑件被提供在叶轮壳体和座之间，以减少环形密封件上的负荷。

Description

风扇
技术领域
本实用新型涉及一种风扇。特别地，但不排他地，本实用新型涉及一种地面或桌上风扇，如桌扇，塔式风扇或落地风扇。
背景技术
传统的家用风扇通常包括安装为绕轴线旋转的叶片组或翼片组、以及用于旋转所述叶片组以产生空气流的驱动装置。空气流的移动和循环创造“风冷”或微风，因此，由于热量通过对流和蒸发消散，用户体验了降温效果。叶片被制造并定位在罩中，所述罩在防止用户在风扇使用期间与旋转中的叶片接触的同时允许空气流流经壳体。
WO2009/030879描述了一种不使用被罩收纳的叶片以从风扇组件中将空气吹出的风扇组件。替代地，该风扇组件包括圆柱形基部以及环形喷嘴，所述圆柱形基部收纳有电机驱动的叶轮，以将主空气流吸入基部中，所述环形喷嘴被连接至基部，且还包括环形出气口，通过所述出气口主空气流从风扇排出。喷嘴限定了中心开口，风扇组件所处局部环境中的空气被从出气口排出的主空气流抽吸通过该中心开口，放大主空气流。
WO2010/100452还描述了这样一种风扇组件。在基部内，所述叶轮被定位在叶轮壳体内，用于驱动叶轮的电机被定位在电机桶内，所述电机桶被安装在叶轮壳体上。所述叶轮壳体通过多个有角度间隔开的支撑件被支撑在基部内。每个支撑件转而被安装在相应的支撑表面上，所述支撑表面从基部的内表面径向向内延伸。为了在叶轮壳体和基部之间形成气密密封，唇形密封件被定位在叶轮壳体的外侧表面上用于接合基部的内侧表面。
实用新型内容
本实用新型提供了一种风扇，包括：
具有进气口和出气口的外壳；
被安装在定位在所述外壳内的环形座上的叶轮壳体；
被定位在叶轮壳体内用于产生沿从进气口延伸穿过叶轮壳体到出气口的路径的空气流的叶轮；
被连接到叶轮壳体的电机壳体；
被定位在电机壳体内用于驱动叶轮的电机；
与叶轮壳体和座密封接合的环形密封件；及
被定位在叶轮壳体和座之间用于减少施加到环形密封件的压缩负荷的至少一个弹性支撑件。
所述风扇组件由此包括在叶轮壳体和座之间的至少一个弹性支撑件和环形密封件，其中叶轮壳体被安装在座上。在叶轮壳体和座之间的环形密封件的压缩形成气密密封，所述气密密封阻止空气沿在外壳和叶轮壳体之间延伸的路径泄露返回到外壳的进气口，并由此迫使由叶轮产生的加压空气流流动到外壳的出气口。
环形密封件优选为泡沫环形密封件。由泡沫材料形成环形密封件，与弹性体或橡胶材料相比，可减少通过环形密封件传输到外壳的振动。一个或多个弹性支撑件也被配置在叶轮壳体和座之间以便承受叶轮壳体、叶轮、电机壳体和电机的总重量的一些，从而减少作用在环形密封件上的压缩负荷。这减少了环形密封件的变形程度；在叶轮壳体和座之间的环形密封件的过度压缩会导致从电机壳体通过环形密封件传输到外壳的振动的不期望的增加。
作用在环形密封件上的压缩力优选与表面的最大刚度的方向对准，振动要被从该表面（即风扇的外壳）隔离。在优选实施例中，这个方向平行于外壳的纵向轴线。所述环形密封件优选从外壳的内表面间隔开，以便振动不能从环形密封件向外径向传递到外壳。
除了在叶轮壳体和外壳之间形成气密密封外，环形密封件还可提供缓冲作用，用于在风扇组件使用期间减少一个或多个弹性支撑件的振动，且因而减少从电机壳体通过一个或多个弹性支撑件传输到外壳的振动。
环形密封件优选由在10%压缩量下呈现不超过0.01MPa的应力的材料形成。在优选实施例中，环形密封件由闭孔泡沫材料形成。泡沫材料优选由合成橡胶形成，比如EPDM(乙烯丙烯二烯单体)橡胶。
叶轮壳体可被提供具有凹入区段，所述凹入区段限定用于接收密封件的环形通道。叶轮壳体的凹入区段优选包括密封接合表面，例如凸缘，所述凸缘从叶轮壳体径向向外且大体平行于座延伸，且所述凸缘与密封件密封接合。
所述风扇可包括用于阻止密封件相对于叶轮壳体的旋转的装置。叶轮壳体的凹入区段和密封件两者的外周可为非圆形的或其他形状的，以阻止密封件在环形通道内的旋转。例如，叶轮壳体的凹入区段和密封件两者的外周可为带缺口的（scalloped）。替代地，或附加地，所述座可包括用于阻止密封件相对于叶轮壳体的旋转的装置。
一个或多个弹性支撑件优选绕环形密封件延伸。风扇可包括单个环形弹性支撑件。替代地，风扇可包括多个弹性支撑件。弹性支撑件优选绕叶轮壳体有角度地间隔开。为了减少外壳的宽度，环形密封件的内周或外周可带缺口或以其他方式成形以形成多个凹部，所述凹部每个用于至少部分地容纳相应的弹性支撑件。替代地，环形密封件可被提供具有多个孔，其中每个弹性支撑件延伸穿过相应孔。
该或每个弹性支撑件可包括相应弹簧。替代地，每个弹性支撑件可由弹性材料形成。例如，单个环形弹性支撑件可被提供为绕叶轮壳体布置的波纹管支撑件的形式。在所述风扇包括多个弹性支撑件的情况下，每个支撑件可包括杆或柱，所述杆或柱由橡胶或其他弹性的或弹性体材料形成。
所述风扇优选包括用于阻止叶轮壳体相对于座(也就是绕叶轮的旋转轴)的角运动的装置。例如，风扇可包括用于阻止一个或多个弹性支撑件相对于座的角运动的装置。座可被提供具有一个或多个挡止构件，挡止构件用于接合一个或多个弹性支撑件以防止一个或多个弹性支撑件沿座的运动。挡止构件可为座的凸起或凹入区段的形式。风扇还可包括用于阻止一个或多个弹性支撑件相对于叶轮壳体的角运动的装置。例如，叶轮壳体可包括一个或多个挡止构件，所述挡止构件用于接合一个或多个弹性支撑件以防止一个或多个弹性支撑件沿叶轮壳体运动。在风扇包括多个弹性支撑件的情况下，叶轮壳体可包括多个安装件，每个安装件被连接到相应的弹性支撑件。
所述座可被连接到风扇的基部的上端，以便被定位在外壳内。然而，所述座优选被连接到外壳。所述座优选从外壳的侧壁径向向内延伸。
附图说明
现在将参照附图，仅通过实例对本实用新型的优选特征进行描述，在附图中：
图1是风扇的正视图；
图2是风扇的出气口的从上方观察的正透视图；
图3是风扇的体部的侧剖面图；
图4是风扇的下部部分的叶轮壳体、环形密封件和弹性支撑件的从下方观察的分解图；及
图5是如图4中所示的风扇的相同部件和外壳的体部的主体部区段的下部部分的从上方观察的分解图。
具体实施方式
图1是风扇10的正视图。风扇包括体部12，所述体部具有进气口14，进气口14为形成在体部12的外壳16中的多个孔的形式，主空气流被从外部环境穿过进气口抽吸进入体部12。环形喷嘴18被连接到体部12，环形喷嘴18具有出气口20，出气口20用于从风扇10排出主空气流。体部还包括用户界面，所述用户界面用于允许用户控制风扇10的操作。用户界面包括多个用户可操作按钮22、24和用户可操作拨盘26。
还如图2所示，喷嘴18包括连接到环形内壳体区段30且绕其延伸的环形外壳体区段28。喷嘴18的环形区段28、30绕开口32延伸且限定开口32。这些区段中每一个可由多个连接的部分形成，但是在此实施例中，外壳体区段28和内壳体区段30每个由各自的，单个模制部件形成。装配期间，外壳体区段28被插入被定位在内壳体区段30的前部的槽中，如图3和4所示。外壳体区段和内壳体区段28、30可使用施加于槽内的粘合剂连接在一起。外壳体区段28包括基部34，基部34被连接至体部12的外壳16的敞开的上端，且基部34具有用于接收来自体部12的主空气流的敞开下端。
外壳体区段28和内壳体区段30一起限定了环形内部通道，用于将主空气流传输至出气口20。该内部通道由外壳体区段28的内表面和内壳体区段30的内表面限定。外壳体区段28的基部34被成形为将主空气流传输进入喷嘴18的内部通道内。
出气口20被定位在喷嘴18的后部附近，且被布置为穿过开口32朝向风扇10的前方喷出主空气流。出气口20至少部分地绕开口32延伸并且优选包围开口32。出气口20通过分别使外壳体区段28的内表面和内壳体区段30的外表面的部分重叠或面对来限定，且为环形槽的形式，优选具有范围为0.5至5mm的相对恒定的宽度。在这个实例中，出气口的宽度约为1mm。间隔件可绕出气口20间隔开用于促使外壳体区段28和内壳体区段30的重叠部分分开，以保持出气口20的宽度在期望水平。这些间隔件可与外壳体区段28或内壳体区段30的任一个成一体。
出气口20被成形为将主空气流引导经过内壳体区段30的外表面上方。内壳体区段30的外表面包括科恩达表面36（该表面被定位在出气口20附近并且出气口20引导自风扇10排出的空气经过该表面上方），扩散器表面38（该表面被定位在科恩达表面36的下游），和引导表面40（该表面被定位在扩散器表面38的下游）。扩散器表面38被布置为成锥形地远离开口32的中心轴线X，通过这样的方式以帮助自风扇10排出的空气的流动。扩散器表面38与开口32的中心轴X之间所夹的角在5°到25°的范围内，并且在此例中大约为15°。引导表面40被布置为相对扩散器表面38成角度，以进一步帮助冷空气流自风扇10的有效输送。引导表面40优选被布置成与开口32的中心轴线X基本平行，以向从出气口20排出的空气流呈现基本平坦和基本平滑的表面。具有视觉吸引力的锥形表面42被定位在引导表面40的下游，终止在末端表面44处，该末端表面44与开口32的中心轴线X大致垂直。锥形表面42和开口32的中心轴线X之间所夹的角度优选为约45°。
图3示出了穿过风扇10的体部12剖取的侧剖面图。体部12包括基本圆柱形的主体部区段50，主体部区段50被安装在基本圆柱形的下体部区段52上。主体部区段50和下体部区段52优选由塑料材料形成。该主体部区段50以及下体部区段52优选具有基本相同的外径，以使得主体部区段50的外表面基本和下体部区段52的外表面平齐。
主体部区段50包括进气口14，主空气流穿过该进气口14进入风扇组件10。在该实施例中，进气口14包括形成在主体部区段50中的孔的阵列。替代地，进气口14可包括一个或多个格栅或网格，其被安装在形成于主体部区段50内的窗口部内。主体部区段50在其上端敞开（如图所示），以提供出气口54，主空气流穿过该出气口54从体部12排放到喷嘴18。
主体部区段50可相对于下体部区段52倾斜，以调整主空气流被从风扇组件10排出的方向。示例性地，下体部区段52的上表面以及主体部区段50的下表面可设置有互相连接的特征结构部，这些特征结构部允许主体部区段50相对于下体部区段52运动，同时阻止主体部区段50被从下体部区段52提起。示例性地，下体部区段52以及主体部区段50可包括互锁的L形构件。
下体部区段52被安装在基部56上，基部56用于接合该风扇组件10所处其上的表面。下体部区段52包括上述用户界面和控制电路(通常指示在58处)，控制电路用于响应用户界面的操作控制风扇10的各种功能。下体部区段52还容纳有用于使下体部区段52相对于基部56摆动的机构。摆动机构的运行由控制电路58响应于用户压下按钮24而控制。下体部区段52相对于基部56的每一次摆动周期的范围优选地在60°至120°之间，且摆动机构被布置执行约3至5个摆动周期每分钟。用于供应电力到风扇10的主电源线(未显示)延伸穿过形成在基部56中的孔。
主体部区段50容纳有叶轮60，用于抽吸主空气流通过进气口14并进入体部12内。叶轮60被连接到旋转轴62，该旋转轴62自电机64向外延伸。在这个实施例中，电机64为DC无刷电机，其速度可被控制电路58响应于拨盘26的用户操作进行变动。电机64的最大速度优选地在从5000至10000rpm的范围内。
电机64被容纳在电机壳体内。电机壳体包括下部区段66和上部区段68，下部区段66支撑电机64，上部区段68被连接到下部区段66。轴62突出穿过形成在电机壳体的下部区段66中的孔，以允许叶轮被连接到轴62。电机64在上部区段68被连接到下部区段66之前被插入电机壳体的下部区段66中。上部区段68包括环形扩散器70，该扩散器70具有多个叶片，用于接收从叶轮64排放的主空气流且用于引导该空气流到主体部区段50的出气口54。罩72被连接到叶轮60的叶片的外边缘。
电机壳体通过叶轮壳体74被支撑在主体部区段50内。叶轮壳体74为大体截头锥形形状，且包括进气口76和出气口78，进气口76位于叶轮壳体74的相对小的向外扩口的下端(如所示)处，用于接收主空气流，出气口78位于叶轮壳体74的相对大的上端(如所示)，当电机壳体被支撑在叶轮壳体74内时，该叶轮壳体74被定位在扩散器72的直接上游。叶轮60、罩72和叶轮壳体74被成形以便当叶轮60由叶轮壳体74支撑时，罩72紧密靠近但没有接触叶轮壳体74的内表面，且叶轮60与叶轮壳体74是基本同轴的。
环形入口构件80引导来自外壳16的进气口14的空气流到叶轮壳体74的进气口76。盘状泡沫消声构件82被定位在主体部区段50内，叶轮壳体74的进气口76的下方。环形泡沫消声构件84被定位在电机壳体中。
还参考图4和5，叶轮壳体74被定位在主体部区段50内，以便叶轮60的旋转轴线与主体部区段50的纵向轴线基本共线。叶轮壳体74被安装在环形座86上，该座86被定位在主体部区段50内。该座86从主体部区段50的内表面径向向内延伸，以便座86的上表面与叶轮60的旋转轴线基本正交。
环形密封件88被定位在叶轮壳体74和座86之间。环形密封件88优选为泡沫环形密封件，且优选由闭孔泡沫材料（closed cell foam material）形成。在这个实例中，环形密封件88由EPDM(乙烯丙烯二烯单体（ethylenepropylene diene monomer）)橡胶形成，但环形密封件88可由其它闭孔泡沫材料(优选在10%压缩量下呈现不超过0.01MPa的应力)形成。环形密封件88的外径优选小于主体部区段50的内径，以便环形密封件88从主体部区段50的内表面间隔开。
环形密封件88具有下表面和上表面，该下表面与座86的上表面密封接合，该上表面与叶轮壳体74密封接合。在这个实例中，叶轮壳体74包括凹入式密封接合区段90，凹入式密封接合区段90绕叶轮壳体的外壁延伸。叶轮壳体74的密封接合区段90包括凸缘92，凸缘92限定了环形通道94，用于接收环形密封件88。凸缘92从叶轮壳体74的外表面径向向外延伸以便凸缘92的下表面与叶轮60的旋转轴线基本正交。凸缘92的周向唇部96的内周边和环形密封件88的外周边优选带缺口或为其他形状，以限定多个凹部98,100，从而阻止在叶轮壳体74和环形密封件88之间的相对旋转。
座86包括孔102，以使电缆(未显示)能够从控制电路58行进到电机64。叶轮壳体74的凸缘92和环形密封件88每个成形以限定相应凹部104、106，用于容纳电缆的一部分。一个或多个垫圈或其他密封构件可被绕电缆提供，以阻止空气在凹部104、106和主体部区段50的内表面之间和通过孔102的泄漏。
多个弹性支撑件108还被提供在叶轮壳体74和座86之间用于支撑电机64、电机壳体、叶轮60和叶轮壳体74的重量的一部分。弹性支撑件108从主体部区段50的纵向轴线等距地间隔开且绕主体部区段50的纵向轴线等距地间隔开。弹性支撑件108每个具有第一端部和第二端部，第一端部被连接到定位在叶轮壳体74的凸缘92上的相应的安装件110，第二端部被接收在形成在座86中的凹部112内，以阻止弹性支撑件108沿座86且绕主体部区段50的纵向轴线的运动。在这个实例中，弹性支撑件108每个包括弹簧114和橡胶脚116，弹簧114被定位在相应安装件110上，橡胶脚116被利用相应凹部112定位。替代地，弹簧114和橡胶脚116可被由橡胶或其他弹性或弹性体材料形成的杆或柱替代。作为另一替代，多个弹性支撑件108可由绕环形密封件88延伸的单个环形弹性支撑件替代。在这个实施例中，环形密封件88的外周进一步带缺口或以其他方式成形以形成多个凹部118，该凹部118每个用于至少部分地接收相应的弹性支撑件88。这允许弹性支撑件88在没有减少环形密封件80的径向厚度或增加主体部区段50的直径的情况下被定位为更靠近主体部区段50的纵向轴线。
为了操作风扇10，用户按下用户界面的按钮22，响应于此，控制电路58激活电机64以旋转叶轮60。叶轮60的旋转导致主空气流经过进气口14被吸入体部12内。用户可通过操控拨盘26来控制电机64的速度，且由此控制空气通过进气口14被吸入体部12内的速率。根据电机64的速度，由叶轮60产生的主空气流量可在每秒20到30升之间。
叶轮60通过电机64旋转产生振动，该振动经过电机壳体和叶轮壳体74向座86传递。被定位在叶轮壳体74和座86之间的环形密封件88在电机壳体、电机64、叶轮60以及叶轮壳体74的重量作用下被压缩，使得它与座86的上表面和叶轮壳体74的凸缘92的下表面密封接合。环形密封件88由此不仅防止主空气流沿在主体部区段50的内表面和叶轮壳体74的外表面之间延伸的路径返回叶轮壳体74的进气口76，而且还减少这些振动到座86且由此到风扇10的体部12的传递。在叶轮壳体74和座86之间存在弹性支撑件108阻止随着时间过去环形密封件88的任何过度压缩，其否则会增加经过环形密封件88传输到座86的振动。弹性支撑件108的柔性允许弹性支撑件相对于座86轴向地和径向地弯曲，其减少了经过弹性支撑件88传输到座86的振动。环形密封件88用于缓冲弹性支撑件108相对于座86的弯曲运动。
主空气流依次在叶轮60和叶轮壳体74之间穿过、穿过扩散器72，然后穿过体部12的出气口54且进入喷嘴18。在喷嘴18内，主空气流被分成两股空气流，其沿相反的方向环绕喷嘴18的开口32行进。当空气流经过喷嘴18时，空气通过出气口20被排出。由出气口20排出的主空气流被引导越过喷嘴18的科恩达表面36，导致来自外部环境（特别是来自出气口20附近，以及来自喷嘴18的后部附近的区域）的空气的卷吸所产生的次空气流。次空气流流动穿过喷嘴18的中心开口32，其在该中心开口32处和主空气流汇合，以产生总空气流，或气流，从喷嘴18向前喷出。

Claims (16)

1.一种风扇，其特征在于，该风扇包括：
外壳，具有进气口和出气口；
叶轮壳体，被安装在定位在所述外壳内的环形座上；
叶轮，被定位在叶轮壳体内，用于产生沿从进气口延伸穿过叶轮壳体到出气口的路径的空气流；
电机壳体，被连接到叶轮壳体；
电机，被定位在电机壳体内，用于驱动叶轮；
环形密封件，与叶轮壳体和该座密封接合；及
至少一个弹性支撑件，被定位在叶轮壳体和该座之间，用于减少施加到环形密封件的压缩负荷。
2.如权利要求1所述的风扇，其特征在于，所述座被连接到外壳。
3.如权利要求2所述的风扇，其特征在于，所述座从外壳的侧壁径向向内延伸。
4.如权利要求1所述的风扇，其特征在于，所述叶轮壳体包括凹入区段，所述凹入区段限定了用于接收所述密封件的环形通道。
5.如权利要求4所述的风扇，其特征在于，所述凹入区段包括密封接合表面，所述密封接合表面从叶轮壳体的侧壁径向向外且平行于所述座延伸。
6.如权利要求1所述的风扇，其特征在于，该风扇包括用于阻止密封件相对于叶轮壳体的旋转的装置。
7.如权利要求1所述的风扇，其特征在于，该风扇包括用于阻止叶轮壳体相对于所述座的角运动的装置。
8.如权利要求1所述的风扇，其特征在于，所述至少一个弹性支撑件包括多个弹性支撑件。
9.如权利要求8所述的风扇，其特征在于，所述弹性支撑件绕叶轮壳体有角度地间隔开。
10.如权利要求8所述的风扇，其特征在于，所述密封件的外周表面被成形以便形成多个凹部，所述凹部每个用于至少部分地接收相应的弹性支撑件。
11.如权利要求8所述的风扇，其特征在于，所述叶轮壳体包括多个安装件，所述安装件每个被连接到相应的弹性支撑件。
12.如权利要求8所述的风扇，其特征在于，所述环形密封件包括多个凹部，所述凹部每个用于接收相应的弹性支撑件。
13.如权利要求8所述的风扇，其特征在于，所述弹性支撑件每个包括相应的弹簧。
14.如权利要求1至13中任一项所述的风扇，其特征在于，所述环形密封件为泡沫环形密封件。
15.如权利要求1至13中任一项所述的风扇，其特征在于，所述环形密封件由闭孔泡沫材料形成。
16.如权利要求1至13中任一项所述的风扇，其特征在于，所述环形密封件从外壳的内侧表面间隔开。
CN201320030559XU 2012-01-19 2013-01-21 风扇 Withdrawn - After Issue CN203067322U (zh)

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GB2498547B (en) 2015-02-18
CN103216456A (zh) 2013-07-24
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US9328739B2 (en) 2016-05-03
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