公开(公告)号：EP0197346B1

公开(公告)日：1989-10-25

申请号：EP86103365.2

申请日：1986-03-13

Applicant: BOWLES FLUIDICS CORPORATION

Inventor： Stouffer, Ronald Denton ,  Boone, Otho

IPC: B60S1/54

CPC classification number: B60H1/3414 ,  B05B1/08 ,  B60S1/54 ,  F15C1/22

公开(公告)号：EP0197346A3

公开(公告)日：1987-04-22

申请号：EP86103365

申请日：1986-03-13

Applicant: BOWLES FLUIDICS CORPORATION

Inventor： Stouffer, Ronald Denton ,  Boone, Otho

IPC: B60S01/54

CPC classification number: B60H1/3414 ,  B05B1/08 ,  B60S1/54 ,  F15C1/22

Abstract: A defrost/defog air supply system for issuing a sweeping jet of air upon a windshield (W) or other surface to be defrosted or defogged comprises a fluidic oscillator (10) having a power nozzle (15) coupled to receive the defrost/defog air and an outlet for issuing a sweeping stream of defrost/defog air onto the surface. The fluidic oscillator is short in length (in the preferred embodiment the distance from the power nozzle (15) to the end (18) of the outlet is less than twice the width of the power nozzle) and has a pair of control ports (16L, 16R) immediately adjacent the downstream side of the power nozzle of the fluidic and a continuous inertance loop (14) interconnecting the control ports - (16L, 16R) with the continuous inertance loop being of a length and cross-section such as to maintain the frequency of oscillation below about 12Hz to thereby avoid mixing with ambient air prior to impingement upon the surface to be defrost. The downstream edges of the control ports (16L, 16R) are set back to permit ambient air to enter the control port when the defrost/defog air issuing from the nozzle (15) is at the opposite sides. Flow straighteners (40, 41, 42, 43) are provided upstream of the power nozzle (15) and just as the air exits from the manifold or supply to assure uniform and symmetrical flow velocity profile in the power nozzle. Sweep angle enhancers (32, 34, 35, 36) are provided at the outlet so that very short diverging sidewalls (17L, 17R) reduce the amount of underdash space required. The continuous inertance loop (14) is shaped and packaged so as to provide a form factor which likewise reduces the amount of underdash volumetric space occupied by the defrost nozzle. Since the fluidic is more sensitive to the inertance cross-sectional area than the length, care is taken to assure that there is no abrupt changes in cross-section or cross-sectional area of the inertance.

公开(公告)号：EP0197346A2

公开(公告)日：1986-10-15

申请号：EP86103365.2

申请日：1986-03-13

Applicant: BOWLES FLUIDICS CORPORATION

Inventor： Stouffer, Ronald Denton ,  Boone, Otho

IPC: B60S1/54

CPC classification number: B60H1/3414 ,  B05B1/08 ,  B60S1/54 ,  F15C1/22

Abstract: A defrost/defog air supply system for issuing a sweeping jet of air upon a windshield (W) or other surface to be defrosted or defogged comprises a fluidic oscillator (10) having a power nozzle (15) coupled to receive the defrost/defog air and an outlet for issuing a sweeping stream of defrost/defog air onto the surface. The fluidic oscillator is short in length (in the preferred embodiment the distance from the power nozzle (15) to the end (18) of the outlet is less than twice the width of the power nozzle) and has a pair of control ports (16L, 16R) immediately adjacent the downstream side of the power nozzle of the fluidic and a continuous inertance loop (14) interconnecting the control ports - (16L, 16R) with the continuous inertance loop being of a length and cross-section such as to maintain the frequency of oscillation below about 12Hz to thereby avoid mixing with ambient air prior to impingement upon the surface to be defrost. The downstream edges of the control ports (16L, 16R) are set back to permit ambient air to enter the control port when the defrost/defog air issuing from the nozzle (15) is at the opposite sides. Flow straighteners (40, 41, 42, 43) are provided upstream of the power nozzle (15) and just as the air exits from the manifold or supply to assure uniform and symmetrical flow velocity profile in the power nozzle. Sweep angle enhancers (32, 34, 35, 36) are provided at the outlet so that very short diverging sidewalls (17L, 17R) reduce the amount of underdash space required. The continuous inertance loop (14) is shaped and packaged so as to provide a form factor which likewise reduces the amount of underdash volumetric space occupied by the defrost nozzle. Since the fluidic is more sensitive to the inertance cross-sectional area than the length, care is taken to assure that there is no abrupt changes in cross-section or cross-sectional area of the inertance.

Abstract translation: 一种用于在挡风玻璃（W）或其他待除霜或除雾的表面上发出扫气射流的除霜/除雾空气供应系统包括具有动力喷嘴（15）的流体振荡器（10），动力喷嘴（15）被连接以接收除霜/除雾空气 以及一个用于向表面喷出除霜/除雾气流的出口。 流体振荡器的长度短（在优选实施例中，从动力喷嘴（15）到出口端部（18）的距离小于动力喷嘴宽度的两倍）并且具有一对控制端口（16L ，16R）紧邻流体的动力喷嘴的下游侧;以及连续的惯性环路（14），其将控制端口 - （16L，16R）与连续的惯性环路相互连接，其具有长度和横截面，以便维持 振荡频率低于约12Hz，从而避免在撞击待除霜表面之前与环境空气混合。 当来自喷嘴（15）的除霜/除雾空气处于相对侧时，控制口（16L，16R）的下游边缘被放回以允许环境空气进入控制口。 整流器（40,41,42,43）设置在动力喷嘴（15）的上游，正如空气离开歧管或供应源一样，以确保动力喷嘴中的均匀和对称的流动速度分布。 扫气角增强器（32,34,35,36）设置在出口处，使得非常短的扩张侧壁（17L，17R）减少了所需的下潜空间量。 连续的惯性环路（14）被成形和封装以提供形状因子，该形状因子同样减少了除霜喷嘴所占据的下游体积空间的量。 由于流体对惯性截面积比长度更敏感，因此要注意确保惯性的横截面或横截面面积不存在突变。