US1738196A

US1738196A - op winnipeg

Info

Publication number: US1738196A
Authority: US
Publication date: 1929-12-03
Anticipated expiration: 1946-12-03

Description

Dec. 3, 1929. J. c. ORR

DAMPER CONSTRUCTION Filed Jan. 5, 1928 l] HI Kill! Patented Dec. 3, 1929 UNITED STATES PATENT OFFIOE JAMES C. ORR, OF WINNIPEG, MANITOBA, CANADA. ASSIGNOB TO WILLIAM JOHN CHRISTIE, 0F WINNIPEG, CANADA DAMPER CONSTRUCTION Application filed January 5, 1928, Serial No. 244,740, and in Canada January 3, 1928.

The invention relates to improvements in damper construction and an object of the inveution is to provide a pipe sect-ion insertible within a smoke pipe and which is provided with an internal, damper controlled, return flow passage whereby the products of combustion can be retarded in their movement through the section and caused to travel in a circuitous path with the result that considerable heat is radiated instead of being lost up the flue or smoke stack.

A further object of the invention is to provide also a check damper to control the velocity of the draft through the passage.

A more specific object is to provide a pipe section having an open ended, centrally located, longitudinally extending passage therein formed by cross plates within the section, the ends of the plates being in staggered relation and dampers at the ends of the plates which when closed will cause a back flow of the products of combustion through the passage prior to escaping to the flue.

With the above more important objects in View, the invention consists essentially in the arrangement and construction of parts hereinafter more particularly described, reference being had to the accompanying drawing in which Fig. 1 is a side view of my invention.

Fig. 2 is a vertical sectional View at 22 Figure 1.

Fig. 3 is a vertical sectional view at 3-3 Figure 2.

Fig. l is an enlarged detailed horizontal sectional view at 4l l Figure 2.

In the drawing like characters oi reference indicate corresponding parts in the several figures.

In carrying out my invention, I utilize a pipe section 1 oi": the customary type which is adapted to be inserted in the smoke pipe leading from a heater such as a stove, furnace or the like.

The pipe section is provided with an internal centrally located and longitudinally entending passage 2 which is formed in the present instance by fastening two parallel spaced cross plates 3 and 4: within the pipe sec tion to provide the passage. The plates are herein shown as provided at their edges with inturned flanges fastened to the pipe section by bolts 5 and the plate 4: has an inturned flange 6 at its upper end and 3 has an inturned flange '7 at its lower end. It will be observed that the ends 0'? the plates are in staggered relation, that is to say, the upper end of the plate 41: extends considerably above the upper end of the plate 3 and the lower end of the plate 3 extends considerably below the lower end of the plate 4;.

An upper damper 8 is located in the pipe section adjoining the upper end of the plate a and overlying the upper end of the plate 3 and is carried by a damper rod 9 of the usual type which has one end thereof formed to provide a finger grip 10. It will be observed that the damper when closed or in the horizontal position as best shown in Figure 2 closes the area between the upper end of the plate l and the right hand side of the pipe section and has the inner edge thereoi underlying the flange 6 which acts as a stop for the damper. A lower damper 11 similar to 8 is provided adjoining the lower end of the Plate 3 and it also is carried by a controlling damper rod 12 and when in the closed or horizontal position closes the area between the lower edge of the plate 3 and the left hand side of the pipe section. The inner edge of the damper 11 engages with the inturned flange 7. The damper rods are both provided with coiled springs 13 as is usual, these restraining the turning movement of the damper rods.

According to the above construction, it will be apparent that when the dampers are closed, I have two side passages 1 and 15 and the central passage 2 in the pipe section and that when the said pipe section is inserted in the smoke pipe, the products of combustion will be caused to take apath of travel in the direction as indicated by the applied arrows in Figure 2. Obviously with the dampers set as shown, the passage 2 is a return flow passage for the products of combustion within the secti on and the length of the said passage will be determined by the existing conditions.

The side of the pipe section containing the passage 15 is provided with a check damper 16, this being herein shown as a rotary check damper of the well known type. Cold air in regulated quantities can be admitted to the passage 15 by opening the check damper a greater or less amount as will be readily understood. If a full draft is required through the smoke pipes, it is only necessary to turn the dampers 8 and 11 to a vertical position when the products of combustion can pass without interruption directly through the pipe section.

Obviously when the dampers are closed, the flow of the products of combustion will be retarded and they will be compelled to pass downwardly through the passage 2 before escaping to the pipe leading to the chimney.

With this type of damper construction, I

conserve a great proportion of the heat whichunder present conditions is allowed to escape to the chimney.

W'hat I claim as my invention is The combination with a pipe section, of a pair of centrally located spaced independent divisional plates crossing the section and extending lengthwise therein and having their edges flanged and permanently bolted to the section and their ends in staggered relation, said plates providing a central passage and two side passages within the section, a normally horizontally disposed upper damper extending between the upper end of one of the plates and the wall of the pipe section and overlying and spaced from the adjacent end of the other of the plates, a normally horizontally disposed lower damper extending between the lower end of the other of the plates and the wall of the pipe section and underlying and spaced from-the lower end of the other of the plates, and inturned stop flanges formed at the extending ends of the divisional plates and engageable with the dampers and stopping the dampers in their horizontal positions.

Signed at Winnipeg, this 12th day of December, 1927.

- JAMES C. ORR.