公开(公告)号：US20140207218A1

公开(公告)日：2014-07-24

申请号：US14224304

申请日：2014-03-25

Applicant: SMITHS MEDICAL ASD, INC.

Inventor： JOSEPH PIERRE ,  RACHEL STARR ,  DAVID G. ROOME

IPC: A61F7/00

CPC classification number: A61F7/0097 ,  F04D29/663

Abstract: To reduce the noise level of an air convective warmer, the air filter of the warmer is fitted with an air intercept mechanism to disrupt the flow of air that traverses inside the interior cavity of the air filter. By thus disrupting the air flow, the noise that otherwise would have been generated due to a non-interrupted air stream flow is lowered. The air intercept mechanism may be in the form of at least one partition positioned inside the interior cavity of the air filter. Alternatively, double-ended open tubes may be used, so long as the interior cavity of the filter is sealed, with only the tubes providing the passages for air to output from the air filter. Yet a third embodiment of the air reduction filter has an air impermeable material covering at least one portion of the surface area of the filtering material to prevent the inflow air from directly entering into the interior cavity of the air filter through the covered surface area.

Abstract translation: 为了降低空气对流加热器的噪音水平，暖风机的空气过滤器配有空气截流机构，以破坏穿过空气过滤器内腔的空气流动。 通过这样破坏空气流，由于不间断的空气流流动而产生的噪音将会降低。 空气截流机构可以是位于空气过滤器的内部空腔内的至少一个分隔板的形式。 或者，可以使用双端开放管，只要过滤器的内腔被密封，只有管提供用于空气从空气过滤器输出的通道。 空气还原过滤器的第三实施例具有覆盖过滤材料的表面区域的至少一部分的不透气材料，以防止流入空气通过被覆盖的表面区域直接进入空气过滤器的内腔。