US1656525A

US1656525A - Regulating device for central heating installations

Info

Publication number: US1656525A
Application number: US100194A
Authority: US
Inventors: Lewinsky Erik Julius; Lewinsky Anders Vilhelm Viggo
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-11-13
Filing date: 1926-04-06
Publication date: 1928-01-17
Anticipated expiration: 1945-01-17

Description

. v 1,656,525 E. J. LEWINSKY ET AL V REGULATING DEVICE FOR CENTRAL HEATING INSTALLATIONS Jan. 17, 1928.

' Filed April 6, 1926 Patented Jan. 17, 1923.

. UNITED STATES 1,t-5fi,525

PATENT OFFICE.

ERIK JULIUS LEYVINSKY AND ANDERS VILHELM VIGGO LEWINSKY, 013 COPENHAGEN, DENMARK.

REGULATING DEVICE FOR CENTRAL HEATING INSTALLATIONS.

Application filed April 6, 1526, Serial No. 100,194, and in Denmark November 13, 1924.

between the outletand inlet pipes of the boiler, or on the expansion of a fluid enclosed in a casing.

The regulating pipes or" the first group must be 'ather long, it their longitudinal variations by small alterations of temperature shall be suiiiciently large, and during their mounting the heating installation must be emptied from water, and the arrangements of the second group cannot be relied upon after the use of some time.

Our invention relates to a. regulating device which is acted upon directly by the temperature of the boiler water, as the arrangements of the former group, and at the same time is placed directly on the boil-er, as the arrangements of the latter group of known regulators.

Our invention is illustrated in the accompanying drawing, in which Figure 1 shows the regulating device in side-view;

l' ig. Q the same in irontwicw; and

ll 8 the same in vertical section.

Arcoriling to our invention a. pipe ll. placed in oi near the top of the boiler and furnished with a cover 52 havin an air valve 3. The pipe 1 surrounds a concentric inner pipe i, the upper part of which does not reach quite up to the cover 2, while its lower end projects with a piece into the boiler. The larger this piece is, the more sensitive becomes the regulating device. Connected to the upper end of the outer pipe 1 is the upper end 5 of a casing 6. The lower end 7 of easing 6 is open and loosely surrounds the pipe 1.

The lower end 7 of casing 6 has knife-edges 8 directed downward and lodged in a iorlo shaped piece 10 of a lever 9. Under the branches of the said fork 10 is afirin plate 11 having upwardly directed knife-edges 12, the knife-edges 8 and 12 being displaced from one another. The lever 9 further has a downwardly directed knife-edge 13, being displaced with respect to a knife-edge 15 lodged in an arm 14:, and carried by a rod 16, which is connected with the damper or air valve of the fire-place.

Our regulating device acts in the following manner:

By alterations of temperature in the boiler water a circulation in the water-filled pipe 1, caused by the length of the inner return pipe, will take place indicated by arrows, and thus the outer pipe will always have the temperature of the water, and will change its length owing to the alteration of the temperature. The movement caused by this alteration is transmitted to the casing 6, so that the lever 9 will be lifted or sunk, which movement again will bring about a a swinging or": the rod 16, to the end of which the damper or valve in well-known manner is connected by means of a chain or the like.

Our device may be made in relatively small dimensions, an alteration of a millimeter of the lengthot the pipe 1 causing a considerable oscillation of the rod 16, which is counterbalanced in such amanner, that the damper has overweight.

The regulating device can be screwed on water filled boilers of every kind, and no special pipeconnections or other mountings are. needed.

For the knife-edge 13 two notches are furr12, nished in the rod 16, so that it, by means o't an adjusting screw, can be shifted according to the connection oil the rod with the damper.

Having thus described our invention, We claim:

In regulating devices for ccntral-hoating installations, in which a member expanding and contracting by alterations of temper ature adjusts a damper for air supply by means of a leverand lniitc-cdgc-connection, 3% the combination, with a boiler, of an outer pipe mounted at the top of the boiler and communicating at the lower end with the interior of the same, an inner return pipe surrounded by and separated from the said outer pipe and projecting into the boiler to effect a circulation of water through the pipes, a cover placed at the upper end or" the said outer pipe, a casing surroundingthe said pipes and connected to the outer pipe,