US2382579A - Condensation drain - Google Patents

Description

Aug- 14, 1945. w. QUEIROLO 2,382,579

CONDENSATION DRAIN 1 Filed Feb. 5, 1944 TIE-1 BY 0 Patented Aug. 14, 1945 UNITED STATES PATENT OFFICE 2 Claims.

This invention relates to a condensation drain, particularly one intended to be used in a stack carrying wet gases from a fuel burner.

In the operation of a fuel burner, water is necessarily present in the products of combustion, due to the oxidation of hydrogen present in the fuel to form water. Particularly in those instances where the burner gases are conducted through relatively light pipes having little heat retaining capacity, so the atmosphere can quickly cool gases in the pipe, water condenses and collects. Instances are known where the water has actually filled an elbow, cutting oil gas flow through the pipe. Other instances are known where the collected water has drained back and has put out the fire.

It is in general the broad object of the present 7 invention to provide a simple condensation drain In the drawing accompanying and forming a part hereof, Figure l is a side elevation partly in section illustrating a condensate drain of this invention employed between adjacent pipe sections.

Figure 2 is a plan view of the condensate drain of this invention.

Referring to the drawing, I have shown adjacent pipe sections 5 and 6. These can comprise any of the usual sheet-metal or composition pipes usually employed to carry wet gases. These pipes are ordinarily f the same internal and external diameter and: are usually connected together by some form of coupling, or by brazing.

In accordance with this invention I provide a condensate drain in the form a frustum of a cone, as indicated generally by numeral 1 in the drawing. This structure is usually made of sheet metal and is larger adjacent itsbase 8 than at the top portion 9, so that the top portion fitswithin pipe 5 while the bottom portion 8 slips over the top of pipe 6. To permit condensate collecting in pipe 5 to collect and drain out of the stack I preferably corrugate the top section 9 as I have the outside of the stack. If desired, a rim 12 can.

be formed on the base of the drain to collect the condensate, and if desired, the condensate collecting in the rim l2 can be led away through a suitable drain pipe, not shown.

While I have disclosed that the drain is positioned in a vertical pipe, it will also operate satisfactorily in angularly positioned pipes. In addition, it can be used to provide a connection between pipes 5 and 6 even though they are not on the same longitudinal axis.

In addition to acting as a condensate drain, the device of the present invention assists the draft through the stack provided by pipes 5 and 6, permitting air to enter and create a draft through pipe 5. The presence of the condensate drain in the stack also tends to offset a gust of wind blowing back down the stack and putting out a burner flame.

While I have so far described the device asa condensate drain only in connection with burner gases it is not limited to this application. For example, it can be used to advantage in a fume vent line from a ventilated hood to separate grease or other condensate from the gas and prevent it from running back toward the gas source.

Condensate is collected in the rim I2, as I have mentioned. This rim can be turned in toward the base 8 or it can even be formed at a suitable angle to the base to permit the drain to be fastened to a roof to provide a roof flange for supporting the drain and pipe section 5.

I claim;

1. In combination, a first pipe adapted to lead from a wet gas source. a second pipe extending beyond said first pipe, and means connecting said pipes and comprising a frustum of a cone, one end being of larger diameter than the first pipe and positioned over an end of the first pipe and extending into an end of the second pipe, the side wall of said frustrum being corrugated to provide a plurality of liquid passages from said second pipe to the atmosphere.

2. A flue pipe construction comprising a first vertical flue pipe, a second vertical flue pipe above the first pipe, and a connection joining said pipes comprising a frustum of a cone having a corrugated side wall, one end of said Icone frustum being of a larger diameter than the first pipe, said connection being positioned with said wall over the end of the first pipe and extending into the second pipe, said corrugations being of such depth and extent as to provide a plurality of liquid passages from the second pipe to the atmosphere when the connection is in that position in which it joins said pipes together.

WILLIAM QUEIROLO.

Images