公开(公告)号：US06595744B2

公开(公告)日：2003-07-22

申请号：US09883730

申请日：2001-06-18

申请人： Robert Van Houten

发明人： Robert Van Houten

IPC分类号： F04D2938

CPC分类号： F04D29/582 ,  F04D29/164 ,  F04D29/384 ,  F04D29/545 ,  Y10S416/02 ,  Y10S416/05

摘要： High efficiency and low noise is achieved in an automotive engine-cooling fan assembly by flaring the inlet to the shroud barrel, and shaping the tips of the fan blades to conform to the shape of the inlet. Separation of the flow entering the fan is reduced by extending the flare over the axial extent of the blade tip, and tip clearance losses are reduced by controlling recirculation along the entire blade tip. Blade rake is used to minimize fan deflection, thereby allowing the use of small tip clearances, which further enhance performance.

公开(公告)号：US5297931A

公开(公告)日：1994-03-29

申请号：US52811

申请日：1993-04-28

申请人： Martin G. Yapp ,  Robert Van Houten ,  Robert I. Hickey

发明人： Martin G. Yapp ,  Robert Van Houten ,  Robert I. Hickey

IPC分类号： F01D1/04 ,  F01D5/14 ,  F04D29/16 ,  F04D29/32 ,  F04D29/38 ,  F04D29/44 ,  E01D1/02

CPC分类号： F04D29/164 ,  F01D5/141 ,  F04D29/326 ,  F04D29/386 ,  Y02T50/673

摘要： An improvement to forwardly skewed axial fans whereby blade camber and rake are coordinated with skew. The blades are characterized in that a line defined by the points of maximum chordwise camber (f.sub.max) as a function of changing radial position (r) is on the leading edge side of the mid-chord line (M.sub.CL) at values of r toward the root of the blade, and is less forwardly skewed than the leading edge (LE), the mid-chord line (M.sub.CL), and the trailing edge (TE) of said blade; the blade is raked forwardly so that the trailing edge of the blade tip is axially forward of the trailing edge at the blade root; rake (k) increases monotonically as radial position r increases from 0.75R to 1.0R, R being the fan radius; the blade has a relatively large pitch ratio (P/D); and rake is corrected to reflect the chordwise position of maximum camber. As a result, the fan produces a flow that is generally in radial equilibrium having a reduced component of flow normal to the2 desired axial flow and normal to the tangential flow. The coordinated fan can be (but need not be) combined with a housing/band configuration for controlling airflow that recirculates (i.e., counter to the desired axial airflow) in a channel formed between the band and housing.

摘要翻译： 前进倾斜的轴流风扇的改进，其中叶片外倾和耙子与偏斜协调。 叶片的特征在于，作为随着径向位置（r）的变化而变化的最大和弦倾斜点（fmax）所限定的线在中弦线（MCL）的前缘侧上以r向r 并且不如前述边缘（LE），中弦线（MCL）和所述叶片的后缘（TE）向前倾斜; 叶片向前倾斜，使得叶片尖端的后缘在叶根处沿着后缘的轴向向前; 随着径向位置r从0.75R增加到1.0R，耙子（k）单调增加，R是风扇半径; 叶片具有相对较大的间距比（P / D）; 并且耙子被校正以反映最大弯度的弦向位置。 结果，风扇产生通常处于径向平衡状态的流动，其具有垂直于所需的轴向流并垂直于切向流的流动分量。 协调的风扇可以（但不必须）与壳体/带配置结合，用于控制在带和壳体之间形成的通道中再循环（即，与期望的轴向气流相反）的气流。

公开(公告)号：US4917572A

公开(公告)日：1990-04-17

申请号：US197226

申请日：1988-05-23

申请人： Robert Van Houten

发明人： Robert Van Houten

IPC分类号： F04D17/16 ,  F04D29/42

CPC分类号： F04D29/4226 ,  F04D17/16

摘要： A centrifugal blower with rearwardly curved impeller blades positioned in a housing between two housing faces that are spaced apart along the impeller axis. One of the housing faces defines a housing inlet. The housing is substantially closed off with the exception of the inlet and an outlet. The blower is generally characterized in that the: (a) clearance between the impeller blades and at least one of the housing faces is greater than 30% of the impeller blade depth; (b) the impeller diameter is at least 70% of the housing dimension along that diameter; and (c) area of the blower outlet is greater than 70% of the area of a section of the housing taken perpendicular to the direction of airflow along the impeller axis.

摘要翻译： 离心鼓风机，其具有向后弯曲的叶轮叶片，其定位在沿着叶轮轴线间隔开的两个壳体表面之间的壳体中。 一个壳体面限定了壳体入口。 除了入口和出口之外，外壳基本封闭。 鼓风机的特征在于：（a）叶轮叶片与至少一个壳体面之间的间隙大于叶轮叶片深度的30％; （b）叶轮直径为沿该直径的壳体尺寸的至少70％; 和（c）鼓风机出口的面积大于垂直于沿着叶轮轴线的气流方向截取的壳体的一部分面积的70％。