US1166424A

US1166424A - Water-heater.

Info

Publication number: US1166424A
Application number: US84600314A
Authority: US
Inventors: Charles A Backstrom
Original assignee: PITTSBURG WATER HEATER Co
Current assignee: PITTSBURG WATER HEATER Co
Priority date: 1914-06-19
Filing date: 1914-06-19
Publication date: 1916-01-04
Anticipated expiration: 1933-01-04

Description

C. A, BACKSI-ROM.

WATER HEATER.

APPLICATION FILLD JUNE 29, I914. A

1,166,424, I Patk uted Jun. :1, I916.

WITNESSES i To all whom it may concern.

CHARLES A. IBACKSTROM', OF GRAFTON, PENNSYLVANIA, ASSIGNOR T PITTSBURG' WATER HEATER COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

Be it known that I,'CHARLEs STROM, a citizen of the United States, residing at Grafton, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in lrVater- Heaters, of which the following is a specification.

The invention relates to water heaters, and particularly to that type having a vertical coil. The invention has for its primary objects (1) the provision of an improvement involving the use of a baflie of novel construction whereby the efliciency of the heater, is materially increased, (2) the provision of a baflle of cheap and simple construction adapted to retard the upward movement of the body of heated gas at the center of the coil and to direct such body of gas laterally across the water carrying coils whereby a maximum heating efi'ect is secured.

One embodiment of the invention is illustrated in the accompanying drawing where- 1n:

The figure is a longitudinal section through a heater built in accordance with my invention.

In the drawings 1 is the casing of the heater and 2 and 3 are concentric vertical sets of coils connected to the inlet header 4 and the outlet header 5. Two sets of coils are illustrated but any number of coils might be employed. Beneath the coils is a gas burner 6 which may be of any improved type. The heated gases escape from the heater through the outlet flue or passage 7.

Located inside of'the innercoil of the heater is a baflie plate 8 bent into the form of a spiral and preferably extending substantially from one end of the coils to the other. The plate is held suspended in place by means of a wire 9 passing around they coil and through the plate. The use of this helical baffle plate I have found to increase the ciiiciency of the heater about 5 per cent.

as compared' withtheaters provided with other baffles of the most approved type as heretofore used in the art. This increase in eiiiciency is due, first, to the fact that the ,helix forces the heated gases at thecenter of the heater to follow a longer path than Specification of Letters Patent.

, WATER-HEATER.

A Patented J an. 4., 1916.

Application filed June 19, .1914. Serial No. 846,003.

would otherwise be the case, and second, to the fact that the curves of the plate tend to distribute the gases laterally across the water coils. A maximum reduction in the temperature of the heated gases is secured and consequently a maximum heating eflect upon the water in the coils. The pitch of the helical baffle 1 plate. is preferably made relatively steep, as illustrated, so that the gases will, not be too greatly retarded in their upward movement, and an that only a portign of the gases will be deflected across the lower turns of the coil; the remaining portion following the baflie plate upward and being deflected across the upper 7 turns of the coil. The battle plate can be very easily and'cheaply made and applied without difiiculty to substantially all types of vertical coilwater heaters. The oregoing and other advantages will be readily apparent to those skilled in the art.

It will be understood that by the term vertical coil is meant an upright coil in which the turns of the coil are arranged so as to providea substantially vertical or upright,-passageway inside the turns of the coil for the-passage of a current of heated gas, the upright bafile plate in the passage: way under this condition being effective to accomplish the function of distributing, the ascending heated gas laterally across the turns of the coil. I a

What I claim is-: In combination in a water heater, a vertical casing, a burner at the lower end thereof, a vertical helical coil in the casingto .permit the passage of gases laterally therebetween, and a helical bafile plate having a relatively steep pitch extending upward through the coil and adapted to retard the upward movement of the gases and deflect a portion thereof laterally across the turns of the coil. I v

In testimony whereof I have hereunto signed my name in the presence of the two subscribed witnesses. i a

(MAKES A. BAOKSTROM. a. 8-]

Witnesses: A I

Jon'N BOURKE, CATHERINE T. BOURKE.