US1709193A - Damper control for heat units - Google Patents

Description

April 16, 1929f 5 SCOTT 1,709,193

DAMPER GQNTROL FOR HEAT UNITS Filed Jan. 16, 1928 2 Sheets-Sheet l April 16, 1929. c. E. SCOTT DAMPER CONTROL FOR HEAT UNITS 2 Sheets-Sheet 2 zzwwzfi a 6/17 01 0 if Jam? Filed Jan. 16, 1928 gr/f/bflifc/zn 1.4 M

Patentfd Apr. 16, 1929.

UNITED STATES PATENT OFFICE.

CLIFFORD E. SCOTT, OF MINNEAPOLIS, MINNESOTA, ASSIGNOIR TO MCQUAY RADIATOR CORPORATION, OF MINNEAPOLIS, MINNESOTA, A CORPORATION 01 DELAWARE.

DAMPER CONTROL FOR HEAT UNITS.

Application filed January 16, 1928. Serial No. 247,160;

My present invention has for its object the provision of a simple and highly efiicient damper control for a heat unit in a heating system using any desired heat exchange medium such as vapor, steam or hot water. Said heat unit may be of the tubular or cellular type of radiator and, as is well known, very little heat exchange takes place from a radiator of this type without the use of either a natural or a forced draft. By the use of my damper control, this draft may be partially or entirely cut off so that the heat exchange that takes place may be controlled, at will.

To the above end, generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings:

Fig. v1 is a view principally in front elevation of a heat unit and cabinet therefor having the invention embodied theren;

Fig. 2 is a view partly in side elevation and partly in vertical section taken on the line 2-2 of Fig. 1 and further illustrating in diagram the wall and floor of a building; and

Fig. 3 is a perspective view of the heat unit removed from the cabinet.

The numerals 4 and 5 indicate, respectively and diagrammatically, the floor and wall of a building and the numeral 6 indicates a heat exchange unit of a heating system. This heat unit 6 is in the form of a cellular or tubular radiator supported on legs 7 from the floor 4 with its air passages Vertically arranged.

Surrounding the heat unit 6 is a sheet metal cabinet or stack 8. This heat unit 6 has at its lower end a cold air intake passage 9 which extends through the wall 5 at one side thereof. The legs 7 support the heat unit 8 with its bottom substantially at the same elevation as the top of the cold air intake passage 9.

The upper end portion of the heat cabinet 8 is curved laterally to aiford a hot air discharge passage 10 which opens through the upward through said unit. A grill 11 covers the hot air discharge passage 10 and is flush with the respective side of the wall 5.

The heat control which is the subject matter of thepresent invention, includes a damper 12 which, as shown, is in the form of a flat sheet metal plate hinged at 13 to the bottom of the heat unit 6- at the back thereof. This damper plate 12 is loosely hinged and normally hangs in an open position under the action of gravity. When the damper 12 is raised into horizontal position against the bottom of the heat unit 6, it completely closes the air passages therein and shuts off the draft through the cabinet 8.

For raising the damper plate 13 to artially or completely close the heat unit, tliere is provided a foot lever 14 intermediately pivoted by a nut-equipped bolt 15 to a bearing 16 on the under side of the heat unit 6 at the front thereof. The short or inner end of the foot lever 14 extends through a notch 17 in the free longitudinal edge portion of the damper plate 12 and is providedwith a crossed pin 18 arranged to engage the under side of the damper plate 12 when the inner end portion of said lever is raised to move the damper plate 12 from an open to a closed position. The outer end portion of the lever 14 extends obliquely outward through the air intake passage 9 so that the same may be engagcd by the foot of an operator and depressed to partially or completely close the damper 12. The pivotal action between the foot lever 14 and bearing 16 has sufficient friction to hold said foot lever where set. This friction, as shown, is produced by a spring washer 19 on the pivot bolt 15. Obviously, by depressing the outer end portion of the foot lever 14, the damper plate 12 may be partially or completely closed and the lever 14 will remain where set and thus hold the damper late 12.

mm the above description it is evident that by the use of the damper control the heat exchange from the heat unit may be controlled, at will.

What I claim is:

1. The combination with a heat unit having air passages and a stack leading therefrom, of a damper hinged to the heat unit for vertical swinging movement to and from a closed position in which it underlies the heat unit and closes the air passages, said damper plate being loosely hinged forswingingmovementinto an open position under the action of gravity, and a lever for raising the damper plate and holding the same where set.

2. The structure defined in claim 1 in which CLIFFORD E. SCOTT.

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