US2184110A - Air conditioning system - Google Patents

Description

Dec. 19, 1939.

S. M. ANDERSON AIR CONDITIONING SYSTEM Filed Oct. 1, 1937 2 Sheets-Sheet 1 BY o:

ATTORNEY.

19, 1939. s ANDERSON 2,184,110

' AIR CONDITIONING SYSTEM Filed Oct. 1, 1937 ZSheets-Sheet 2 EP a4 INVENTOR. SRMUEL. M fllvasesow ATTORNEY.

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atented cc. 1, W39

QJSQJN l CONDITIUNING SYSTEM Samuel M. Anderson, Sharon, Mass, assignor to B. F. Sturtevant Company, Boston, Mass.

Application flctober 1,

2 Claims.

This invention relates to ventilators and relates more particularly to ventilators which may be used in air conditioned passenger vehicles.

Ventilators are used in railway passenger cars for exhausting. what might be called used air from the cars. This invention provides exhaust ventilators which incorporate the following features: The larger volumes of air resulting from evaporative cooling and from pressure ventilating are provided for. The ventilators include balanced dampers which prevent outside air from entering the car through the ventilators and which adjust themselves to pass out any volume of indoor air. They are adaptable to late designs of rounded roofs. They include means for preventing rain water from entering the car. They may be used to ventilate the space between the car ceiling with cooler air from the passenger space. ()utlets in the car ceiling communicate with the dampers and contain adjustable dampers.

An object of the invention is to provide an improved exhaust ventilator for railway passenger cars.

Other objects of the invention will be apparent from the following description taken together with the drawings.

The invention will now be described with reference to the drawings, of which:

Fig. 1 is a plan view looking upwardly, with a portion in section, at the ceiling of a railway passenger car embodying the present invention;

Fig. 2 is a sectional view along the lines 2-4 of Fig. 1;

Fig. 3 is a view looking from the outside of the balanced dampers of Fig. 2;

Fig. 4 is a sectional view along the lines #4 of Fig. 3;.

Fig. 5 is an end view with a portion in section of the eliminatcrs of Fig. 2, and

Fig. 6 is a plan view looking upwardly upon the eliminator of Fig. 5.

Referring first to Fig. l which illustrates the lay-out of a complete air conditioning system embodying this invention, the blowers it draw fresh air through the vestibule inlet ii and re circulated air through the inlet it, pass it over the coils l3 and it and then force it into the longitudinal duct i5.

As shown by Fig-2, the duct I5 is mounted between the ceiling id and roof ll of the car and has the outlets it which extend through the ceiling it to discharge the air into the lower duct is from which it is discharged through the outlets it into the passenger space.

1937, Serial No. 166,805 (Ci. 98-19) Cold air from the passenger space passes upwardly through the grilles 2i mounted in the ceiling it, past the dampers 22 having hand operated handles 39, into the passages 23 which extend between the walls id and 25 through the 5 mod ll of the car.

The curved hoods 26 extend over the passages v 23 and down over the roof of the car and form with the bottom plates 27, the passages 28 which extend into the atmosphere. The outer end of each hood is turned up to provide the'gutter 313. The plates 2i are in recesses below the roof line ill and terminate at their inner ends at the walls 2t and are slanted downwardly to provide drainage for the passages 28.

In the passages 2d are mounted substantially vertical frames it which contain the plurality of superimposed dampers 38 which are pivoted at 29 and which over-lap to close oh the passages 28. Each set of dampers 33 is mounted along a I line tilted towards the center of the car as shown by Fig. 2 so that the weight of the dampers tends to maintain them closed. The dampers 38 are so adjusted that the air through the passages 23, when the blowers it are operating, move the dampers towards open position to permil; the escape of this air. Air tending to enter the car as under wind pressure, through the passage 28 automatically closes the dampers 38.

In the outer portions of the passages 38 are 30 mounted the eliminators ii, the details of which are shown by Figs. 5 and 6. These eliminators contain the plurality of upwardly extending, zigzag plates 32 provided with hooks 33, which catch entrained water such as rain water at- 35 tempting to enter the car, which water drains down the eliminator plates onto the plate 21 and thence from the car.

Normally in the heating season only five hundred cubic feet of air per minute will be discharged from the car and as the exhaust ventilators are designed to exhaust much larger volumes of air, the plates 3% (Figs. 5- and 6) are provided to be mounted on the back sides of the eliminators 3! for plugging up substantially two-thirds of the air outlet area.

In the cooling season, an air washer may be employed for evaporative cooling, in which case all outside'air and no recirculated air would be passed through the system, in which case several times as much air will be exhausted from the exhaust ventilators as during the heating season. The plates 3% are removed and the dampers it automatically adjust themselves for the greatly increased air volume.

Likewise, the exhaust ventilators oi the invention may be used in pressure ventilation systems in which relatively large volumes of air are exhausted from the car.

It may be desired to have the cool exhaust air from the passenger space, cool the space between the ceiling l6 and roof I1, and cool the duct it by passing over and around it, in which case the walls 24 and 25 may be omitted. While one embodiment of the invention has been described for the purpose of illustration, it should be understood that the invention is not limited to the exact apparatus and arrangement of apparatus described, as many departures therefrom may suggest themselves to those skilled in the art without departing from the spirit of the invention.

What is claimed is: a g 1. An exhaust air ventilator for a railway passenger car having a roof and having an opening in the roof to one side of the center thereof for the exhaust of air from said car, comprising a curved hood having one'end terminating at said roof adjacent the inner edge of said opening, said hood extending over said roof down along same towards the side of said car nearest said opening and having its other end, spaced from said root to form an air outlet to the atmosphere, and a substantially flat member having one end terminating adjacent the outer edge of said opening and having its other end at a lower level, said member extending under-. neath said hood and forming with same, an exhaust air passage above said roof, said other end of said hood being turned upwardly to form a gutter.

2. An exhaust air ventilator for a railway passenger car having a roof and having an opening in the root to one side of the center thereof for the exhaust of air from said car, comprising a curved hood having one end terminating at said roof adjacent the inner edge of said opening, said hood extending over said roof down along same towards the side of the car nearest said opening and forming at its other end an exhaust outlet above said roof, and means forming an upwardly curved gutter on the upper edge of said other end of said hood.

SAMUEL M. ANDERSON.

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