Document NG1MjYa759kZ7x15Q6pXr2E4w

Air Fillers and Cleaners American AirJm intercompany Inc. * 1st Street and Central Avenue, Louisville, Ky. Representatives in Principal Cities ' J Dust Engineering--Dust Engineering is that branch of applied science which deals with the origin, nature and characteristics of the small solid air-borne particles called "dust," and the development, of "methods, processes and apparatus for its control or elimination. The American Air Filter Company, Inc., has had an important part in advancing the science of Dust Engineer ing. The efforts of its Re search and Engineering Staff for the past twelve years have been devoted exclusively to the study of dust problems and the development of a complete line of air cleaning equipment for modern air conditioning, building venti lation and the control of pro cess dust in industry. American Air Filter pro ducts, therefore, not only embody the knowledge ac cumulated from years of con stant research and the ex perience gained from design ing, building and applying thousands of air filters, but are backed by ample technical and financial resources to in sure their outstanding posi tion in the Dust Engineering field. Products--American Air Filters are available for every condition, with operating characteristics and efficiencies to suit specific problems. In Renu-Venl Filter Data Section under "Air Cleaners." Air filters are generally used for the removal of dust, dirt, bacteria and other foreign matter from the air and are -applied to general ventilation, modern air conditioning, pro cess dust control; for air com pressors and Diesel Engines; mill motors, turbo-generators and other electrical applica tions; and for air or gas under Automatic Multi-Pond Filter pressure to remove entrained oil, moisture and dirt. Air Filters in Air Con ditioning--Filtered air is today recognized as essential in modern air conditioning. There are other important factors which contribute to our comfort such as tempera ture, air movement and humidity, but science today emphasizes the prime neces sity of pure air for health and efficiency. Throway Air Filter Air cleaners have, of course, always been considered an integral part of large central systems. These are usually of the fully automatic type such as the Multi-Panel filter, illustrated in the accompany ing photograph. There are now available to manufacturers of unit air con ditioners moderate priced unit filters, such as the Re-Nu filter, the Drifilter and the Throway filter, illustrated herewith. The Re-Nu filter is an general, there are two dis tinct types based upon the "viscous film" and "dry mat" principles. Each entirely new departure in air filter construction. It ^consists of a permanent metal frame provided with type is made in several styles which differ in method of operation, servicing, space required and initial cost to meet the various conditions en countered in air cleaning problems. A discussion of various filter types will be found in the Technical Standard Vitcous Unit Filter 768 i American Air Filter Co., Inc. Air Filters and Cleaners a removable cover and renewable filter nad The cover is easily removed without th#vse of tools, and filter pad can be lifted out and replaced with a new one at very small expense in less than a minute's time. The Drifilter consists of the Airmat filtering media mounted on a supporting member and arranged in saw-tooth fashion, as illustrated. The filter media is reason able in price and can be easily replaced when desired. . The throway filter, as the name implies, is an inexpensively constructed unit de- signed to be discarded after it has served its maximum period of usefulness and re placed with a new filter unit. The filter pad is enclosed in a perforated cardboard container which makes it possible to dispose of the dirty filter by burning it in a furnace or incinerator. There is probably no single item which costs as little and may mean as much in the design of an air conditioner as air filtra tion. These units are furnished in any dimensions or shapes desired. They are usually built in units handling 400 c.f.m. and from 2 in. to 4 in. thick. They are usually made in the following sizes-- 20 x 20 in., 16 x 25 in. and 16 x 20 in. High cleaning efficiencies can be secured, with a resistance to air flow ranging from ^6 in. to % in. water gauge. Automatic Self-Cleaning Air Filters --The American line of automatic air filters is among the most complete that has ever been offered, the most popular types being Multi-Panel, Horizontal and Phoenix Filters. All types are furnished for either con tinuous or intermittent service and are available in sizes and set-ups suitable to any desired capacity or space condition. Standard Viscous Unit--The Ameri can Unit Air Filter incorporates the time tested unit principle of construction. Each unit consists of a standard steel frame and interchangeable cell equipped with automatic_ latches to facilitate removal for cleaning and recharging. Airmat Filter Dry Type--The filter ing media in this type is the Airmat sheet, a dry filter mat composed of thin sheets of gauzy, cellulose tissue. The Airmat sheets are supported in screen pockets mounted in a unit frame of box-like construction. These unit frames can be set up to meet any capacity requirement or space con dition. The Airmat sheets are renewable --their life depending on the dust con dition and hours of daily service. Airmat filters are used both for air con ditioning and industrial air conditioning. In the latter field they are particularly well adapted for the recovery of valuable dusts and for abating the dust nuisance which confronts so many industrial plants. Our standard data books and catalogues are to be found in most engineering files or libraries. We will be glad to furnish full data to engineers or manufacturers interested in this subject. i 769