公开(公告)号：US4016809A

公开(公告)日：1977-04-12

申请号：US596267

申请日：1975-07-16

Applicant: Philip R. Austin

Inventor： Philip R. Austin

IPC: B25H1/20 ,  F23J11/00

CPC classification number: B25H1/20 ,  Y10S55/18 ,  Y10S55/29

Abstract: Apparatus providing a work area at which one or several people can perform tasks requiring ultra-high efficient air filtration. The work area includes an air passageway throughwhich laminar flow of air occurs from a HEPA filter. The apparatus has a leading edge around the work area from which a certain of air flows in an enclosing and parallel relationship to the laminar flow air to extend the laminar air zone a distance beyond the work surface of the apparatus. The curtain air is passed through a HEPA filter prior to discharge. Dual air blowers supply air for the laminar flow air and the enclosing air curtain. The passageways for the two sources of air are in communication so that if necessary, one blower can be the source for both the laminar flow air and the air curtain. When both sources are in operation the communication means also serves to eliminate undesirable harmonics that might originate from either blower if it were to operate alone. The apparatus provides illumination of the work area, and the passageway for the air providing the air curtain serves as a heat transfer means for cooling the illuminating means.

Abstract translation: 提供一个工作区域的设备，一个或几个人可以执行需要超高效空气过滤的任务。 工作区域包括空气通道，空气通过HEPA过滤器发生空气层流。 该设备具有围绕工作区域的前缘，一定的空气从该空气以与层流空气的封闭和平行关系流动，以将层流空气区域延伸超过设备的工作表面一段距离。 放电前，帘式空气通过HEPA过滤器。 双重鼓风机为层流空气和封闭气帘供应空气。 两个空气源的通道是通信的，因此如果需要，一个鼓风机可以是层流空气和气幕两者的来源。 当两个源都在运行时，如果单独操作，通信装置还用于消除可能源于鼓风机的不期望的谐波。 该设备提供工作区域的照明，并且用于提供气幕的空气通道用作用于冷却照明装置的传热装置。