GB191011819A - Improvements in and relating to the Cooling and Purification of Air. - Google Patents

Abstract

11,819. Stone & Co., J., [Shelley, A. D. G.]. May 12. [Cognate Application, 24,568/10.] Moistening; washing.-Relates to devices for cooling, disinfecting, purifying, perfuming, or humidifying the air supplied to buildings, railway coaches, hospitals, &c., in which the air is caused to pass over, or through, or make contact with an absorbent screen damped with water or other liquid, disinfectant solutions, or perfume. According to the invention, the screen is supported in a framing constructed with one or more of its members hollow, or with the top member in the form of a trough or tank, the hollow members being adapted for the direct reception and storage of liquid from a suitable supply, or for the reception of a porous container. The edges of the screen, or stands thereof, or wicks or feeders connected to the screen, enter holes or slots in the hollow members and convey the liquid by capillary attraction, various means being provided for preventing the dripping of the liquid. The screen is preferably composed of a woven fabric of loose texture such as castor-oil wicking, and the feeders of a thicker and more closely woven material such as lamp wicking or thick towelling. Fig. 1 shows a rectangular tubular frame a enclosing anabsorbent screen d kept moist by water which soaks through absorbent filling in the slots of the frame. Suitable air escape valves are provided on the frame to enable it to be readily filled with liquid. Fig. 2 shows one method of closing the slot in the tubing so as to prevent leakage, the wick or feeder c connected to the screen d being doubled at g and folded back upon itself at h. In other methods (1) a tubular wick receives a core which prevents the wick from passing through the slot and enables the wick to be adjustably pressed against the borders of the slot; (2) the core is surrounded by a band enveloped by the tubular wick, and means, such as a screw coupling-device, are provided for adjusting the distance between the end of the band so as to vary the pressure upon the core and wick; (3) instead of devices for pressing upon the wicks, the screen is put under tension; thus, if the screen is suspended from a water container, tensioning - devices may be attached to the lower frame member. This lower member may be constructed as, or provided with, a drip-catching trough. Figs. 11 and 12 illustrate how a framework is built up by bolting together similar halves c. Members of the framework which do not contain liquid are constructed with webs perforated at intervals for enabling the screen to be secured thereto. Fig. 15 illustrates the combination with a screen d, of a fan 9 and a tubular casing lined with absorbent material 12 adapted to catch drip or leakage from the screen. Screens suitable for use in a railway-carriage window are mounted on pivots and provided with set-screws or other means for holding them in any adjusted position.