US1806942A

US1806942A - hendricks

Info

Publication number: US1806942A
Authority: US
Publication date: 1931-05-26
Anticipated expiration: 1948-05-26

Description

May 26, 1931- B. A. HENDRlcKs 1,806,942

FUEL OIL HEATER Filed sept. 12 ,1927

ATTORN EY Patented May 26, 1931 PATENT, QFFICE BENJAMIN A. HENDRICKS, Ol' SEATTLE, WASHINGTON FUEL on. mmm

Application iiled September 12, 1927. Serial No. 218,998.

This invention relates to an electric liquid heater and is designed, more especially, for heating fuel oil in connection with an oil burner.

The object of the invention, generally is to provide a heater of this character which will be economical in the consumption of electricity and effectual in operation.

A specific object is to provide an electric oil heater wherein an electric heating element is most advantageously employed to utilize a maximum amount of the produced heat to the oil for raising its temperature, and afford a liquid containing heating chamber which is proportioned and arranged with respect to its oil supply and delivery pipe connections that the heating of the oil is performed regularly and etiiciently.

The invention consists in the novel construction, adaptation, and combination oi' parts hereinafter described and claimed.

ln the accompanying drawings, Figure 1 is a longitudinal section on line 1 1 of Fig. 2, and llig. 2 a transverse section on line 2-2 of Fig.. 1 showing an embodiment of the present invention. p

ln said drawings, the reference numeral 5 represents a metal tubular oil receptacle to the ends of which are secured heads 6 and 7 provided with centrally disposed screw threaded openings within which are engaged oil feed and discharge pipes 8 and 9, respectively, of smaller diameter than said receptacle. if

Mounted upon the receptacle 5 are two annuiar plates 1G which extend into the ends of a cylindrical tube 11 and are secured thereto as by means of screws 12. The tube 11 and the end plates 1() constitute the casing of the heater. Within the casing and surrounding the receptacle 5 is an electric heating element comprising a winding of a resistance wire13 located between two sheets 14 and 15 of mica or other suitable electric insulating and refractory material. 16 represents leading-in wires for said resistance wire and which desirably are protected from injury by the provision of a pipe conduit 17 therefor which is secured to one of' the casing ends as shown in Fig. 1. The space surrounding the outer sheet or wrapping 15 of mica, -within said casing is filled with a suitable heat insulating material 18 such as asbestos.

In use, the heater is used in a horizontal position, and for an oil burner of known construction is included in the fuel supply line 8-9 in close proximity to the furnace in which the burner is installed. The operation of the heating element with respect to the oil within the receptacle is obvious, but the arrangement of the element with respect to a receptacle which is relatively of large diameter compared with the fuel feed an delivery pipe and its horizontal arrangement differs from'other heaters which have come to myl notice. The purpose of the large diameter of' the receptacle a'ords capacity for a large volume of oil in the receptacle and which volume is heated from its periphery inwardly toward the longitudinal axis of the oil bodyU The rela1 tively cold oil is supplied centrally into one end of such oil volume and not against the relatively hot surface of the receptacle;

while the delivery of oil centrally from the other end of such volume ensures an equable temperature of fuel to a burner. Such an arrangement of a drum, as it were, in the pipe line 8 9 tends to ensure uniformity as to temperature and iuidity of the oil which is delivered from my heater, resulting in a practically constant and even nozzle dame when associated with an oil burner.

What l claim, is,-

1. An electric oil heater consisting of a horizontally disposed cylindrical casing having its opposite ends centrically apertured, a cylindrical oil receptacle of uniformV diameter throughout its length extending through the apertures of the respective ends, said receptacle being of a length exceeding that of the casing to project exteriorly of both ends, oil supply and discharge pipes of less diameter than the receptacle connected to respective extremities and axially of the same, tubular members comprising sheets of electric insulating material disposed concentrically about the outer periphery of the receptacle and in spaced relatlons, one with 2 1,soe,e4a

another, an electric heating device comprising a coil of resistance wire provided in the space between said tubular members, and a mass of insulating materlal surrounding the 5 outer of said tubular members, said o1l receptacle being unobstructed to ermit a free circulation to the oil passing t erethrou h. y 2. An electricoil heater consisting. o a horizontally disposed cylindrical casing having its opposite ends centrically apertured, Aa cylindrical oil rece tacle ofuni orm di ameter throughout lts length extending through the apertures of the respective ends, said reeeyliltacle being of a length exceedin that of t e casing to prc'ect exteriorly o both ends, oil supply an discharge pipes of less diameter than the receptacle connected to respective extremities and axially of the same, an electric heating device comprisl f ing a coil of resistance wlre rovided exteriorly of said receptacle, an a mass of insulating material surrounding said resistance wire, said oil receptacle being unobstructed to permit a free circulation to the oil passing therethrough.

Signed at Seattle, Washington, this 18th day of August 1927.

a BENJAMIN A. HENDRICKS.