公开(公告)号：US06461233B1

公开(公告)日：2002-10-08

申请号：US09932142

申请日：2001-08-17

Applicant: Kevin C. Gilkison ,  Larry G. Hambleton ,  Gary P. Roepke ,  Yu Rich Ma ,  Kermit W. Dyer

Inventor： Kevin C. Gilkison ,  Larry G. Hambleton ,  Gary P. Roepke ,  Yu Rich Ma ,  Kermit W. Dyer

IPC: B08B1502

CPC classification number: B08B15/023

Abstract: A low air volume exhaust hood is based on the concept of zone laminar flow through the hood as the hood sash is raised to different levels. Laminar flow is achieved through a plurality of plenum zones constructed at the rear of the cabinet. Preferably the zones are created by utilizing different sized openings in a rear baffle of the cabinet which presents the plenum chamber. Alternatively, distinct independent plenums may be formed and coupled with a common exhaust structure. By utilizing laminar flow which is directed through different zones corresponding to different open positions of the sash, a lower volume of air can be moved through the hood while achieving desired levels of evacuation. Performance of the hood is further enhanced by a novel air foil design at the floor of the hood which promotes a sweeping flow of air across the floor. Turbulent flow is further reduced by a sash handle design which allows air to flow beneath the terminal edge of the sash at the same velocity as air entering the hood through the primary sash opening. A directional baffle for bypass air moving down the inside of the sash helps to control air flow in the upper portion of the hood.

Abstract translation: 低风量排气罩是基于通过罩的区域层流的概念，因为发动机罩框架升高到不同的水平。 通过在机柜后部构造的多个增压区实现层流。 优选地，通过在柜的后挡板中利用不同尺寸的开口来形成这些区域，所述后挡板呈现增压室。 或者，可以形成独立的独立气室并且与普通排气结构联接。 通过利用层流被引导通过对应于窗扇的不同打开位置的不同区域，可以将较低体积的空气移动通过罩，同时达到期望的抽空水平。 通过在发动机罩的地板处的新颖的气翼设计进一步增强了发动机罩的性能，其促进空气横跨地板的清扫流动。 湍流通过窗扇手柄设计进一步减少，这样可以使空气以与通过主窗扇开口进入发动机罩的空气相同的速度流过窗扇的末端边缘。 用于旁路空气向下移动的方向挡板可帮助控制罩的上部空气流动。

公开(公告)号：USD286324S

公开(公告)日：1986-10-21

申请号：US507762

申请日：1983-06-27

Applicant: James D. Parks ,  Charles A. Moss ,  Kermit W. Dyer ,  James F. Corn

Designer： James D. Parks ,  Charles A. Moss ,  Kermit W. Dyer ,  James F. Corn

公开(公告)号：US4534281A

公开(公告)日：1985-08-13

申请号：US535639

申请日：1983-09-26

Applicant: James D. Parks ,  Charles A. Moss ,  Kermit W. Dyer

Inventor： James D. Parks ,  Charles A. Moss ,  Kermit W. Dyer

IPC: B08B15/02 ,  F23J11/00

CPC classification number: B08B15/023 ,  B08B2215/003

Abstract: An improved laboratory fume hood is the subject of the present invention. A cabinet structure presents an enclosed work area defined by sidewalls, a back wall, and an access opening. Each of the sidewalls presents first and second planar surfaces disposed in spaced parallel planes and interconnected by a third surface disposed at an acute angle relative to the plane of one of the first two surfaces. This third surface provides a mounting area for hose connectors which increases the effective work area and reduces the danger of clothing catching on the hose connectors. A vertically mounted sash covers the access opening and is movable between a lowered closed position and a raised open position. A fixture mounted in front of the sash provides means for mounting a light source. A removable cover on the side of the sash opposite the work area cooperates with the sash to define an air duct for directing add air into the access opening. In this regard, air foils are presented for directing the air into the opening at an angle of approximately 90.degree. relative to the plane of the opening. These same openings are utilized to draw in outside air which passes over the top of the sash when the latter is partially closed.

Abstract translation: 改进的实验室通风柜是本发明的主题。 柜体结构呈现由侧壁，后壁和进入开口限定的封闭工作区域。 每个侧壁呈现设置在间隔开的平行平面中的第一和第二平面，并且通过相对于前两个表面之一的平面以锐角设置的第三表面互连。 该第三表面为软管连接器提供了一个安装区域，从而增加了有效的工作区域，并降低了软管接头上的衣服卡住的危险。 垂直安装的窗扇覆盖进入开口，并可在降低的关闭位置和升高的打开位置之间移动。 安装在窗框前面的灯具提供了安装光源的装置。 与工作区域相对的窗框一侧的可移除的盖与窗框配合以形成用于将空气引导到进入开口中的空气管道。 在这方面，提供空气箔以相对于开口的平面以大约90度的角度将空气引导到开口中。 这些相同的开口用于吸引外部空气，当外部空气被部分关闭时通过窗扇的顶部。