US1612532A - Water heater - Google Patents

Description

@atented Eec. 25%, 192$.

PATENT OFFICE.

LESLIE E. PETERS, SAN FRANCISCO, CALIFORNIA, ASSZGNGR TO NEW WAY MANU- FACTURING COMPANY, 01 SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA.

warns HEATER.

Application filed March 1925. erial No. 17,562.

This invention relates to water heaters of the type adapted to automatically control, within itself, the amount of gas to be delivered thereto.

An object of this invention is to provide a water heater constructed in such a manner as to automatically control the amount of gas required for satisfactorily heating the water therein. v

Another object of this invention is b0 provide a water heater in which the pilot light is utilized for maintaining the heat in water in a thermostat control reservoir forming part of the heater.

Another object of the present invention is to provide a combined water heater and thermostat control reservoir, having asso ciated therewith a means adapted to proportionately regulate the amount of fuel to be used to the amount of heated water drawn therefrom. Y

Another object of this invention is to provide a water heater so constructed as to deliver the most efficiency for the least cost of operation.

With these and other objects which will present themselves hereinafter, my invention consists of certain novel features of construction described in detail herein and particularly set forth in the appended claims, ref ence being had to the accompanying drawings forming a part of this application, in which F 1 is a sectional view of my water heater showing in detail the various parts thereof and the manner in which they are assembled, and 4 2 is a top view of the water heater.

Referring to the drawings, the numeral 1 represents a cylindrical casing comprised of two metal cylinders between which and on the inside surface of the innermost of the said metal cylinders are asbestos layers adapted to retain the heat within the casing. The cylindrical casing 1 is provided with a top 2 having th rein an opening 3, and a bottom 4;. Above the top 2, is an inlet pipe 5, connected. to thermostat control reservoir 6, which extends into the casing 1 and secured to and projects through the top 2. The coil 7 encircles the reservoir 6 and is connected at one end *ith the said reservoir. while the other end. is provided with an steel or other suitable material, is located inside and projects above the upper end of a copper tube 10, the latter tube being securely held at its said upper end within a boss 2 located on the top 2 of casing l. The lower end of the copper tube 10 is open and it, together with the thermo rod 9 therein, extends into the reservoir 6 through the top part thereof.

The valve 11 is connected, by means of an upright rod 12 which passes through a protecting tube 13, to one end of a lifting bar 14, the said bar 14 being pivoted at its other end on bar 15. A lever 16 is pivoted on upright bar 17 which is secured to and sup ported by boss 2 and is so positioned that the projecting end of thermo rod 9 may press upwardly against the said lever, thereby affording a means when the thermo rod moves in an upward direction, for causing the valve 11 to become unseated from its seat 18.

The copper tube has a relatively high coefficient of expansion, and the thermo rod 9 has a relatively low coefficient of expansion, so by the application of cold to the heated tube 10, the latter contracts and the thermo rod 9 is forced in an upward direction. As water is withdrawn from outlet 8 the supply in reservoir 6 is replenished by water coming in through the top of the reservoir through inlet pipe 5. The comparatively cool water, coming into the reservoir through inlet pipe 5, and passing downwardly therein around the copper tube 10,

causes the said tube to become cooled, thereby causing it to contract and force the thermo rod in an upward d1rect1on. The thermo rod 9 upon movmg in an upward direction forces lever 16 against lifting bar 14, thereby causing the valve 11 to become unseated, which action allows gas to flow to the inside of the casing, as will be hereinafter explained.

if water ceases to be withdrawn from retervoir 6, the-supply entering inlet pipe 5 is stopped and the tube 10, together with thermo rod 9 become heated, as hereinafter explained, thereby allowing the said thermo rod to move downwardly within the said tube and cause the valve 11 to close. The gas supplying the fuel for heating the coils and reservoir, enters through pipe 19, which outlet 8. A thermo rod 9, made from cold is connected to valve chamber 20, and thereafter 3&32168 through lead 21 to burner 22, where it ignites and furnishes sufficient heat for the device. Connected to valve chamber and projecting through the bottom t into casing 1 is a pilot burner 23, which when lit, constantly heats the pipe 24: leading from the bottom of reservoir 6 through a hole in the casing to the outside thereof. The pipe 24 serves as a means for draining the reservoir as well as a means for keeping the water therein in a warm state, because of the heat being constantly applied thereto by pilot humor 23. The lead 21 is provided with a valve 25 whichpermits the shutting off of the gas going to the burner 22. The reservoir 6 not only serves as a means for retaining water heated through pilot burner 23, but also as a means for causing the thermostatic means operating the valve 11 to function, for by supplanting the warm water ordinarily located within the top of the reservoir with cool water entering through inlet pipe 5, the tube 10 contracts and causes the thermo rod to move in an upward direction, thereby providing means for allowing sufficient gas to enter burner 22.

Though I have shown and described a water heater of particular construction, I do not wish to be limited to the exact form shown, but desire to include within the limits of my invention any arrangement of parts substantially as set forth in the appended claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. A water heater comprising an enclosed casing provided at its bottom with a burner, a reservoir located inside the casing having a water inlet pipe connected to the top thereof, a coil connected to and encircling the reservoir, a thermostatic control means extending into the reservoir through the top thereof, which said thermostatic control means is operated by water entering the reservoir through the inlet pipe, means located on the top of the casing and connected to a valve for admitting fuel to the burner located at the bottom of the casing, which said means is operated to open and close the valve by the thermostatic control means, and a pilot burner located under the said reservoir, whereby the water in the said reservoir may be maintained in a heated state.

2. A water heater comprising, an enclosed casing provided at its bottom with a burner, a reservoir located inside the casing and provided. with a water inlet pipe at its top,

a coil connected to and encircling the reservoir, a thermostatic control means extending into the reservoir through the top thereof and actuated by water entering through the inlet pipe, means for admitting fuel to the burner, means connected to the top of the casing and operated by the thermostatic control means, for regulating the amount of fuel entering the burner, and a pilot burner adapted to maintain the water in the reser voir in a heated condition.

3. A water heater comprising an enclosed ca.-ing provided with a burner at its bottom, means for admitting gas to the burner, a valve located within the means, a reservoir located inside the casing, a coil connected to and encircling thereservoir, means attached to the casing and valve whereby the valve may be operated to regulate the flow of gas to the burner, a thermostatic control means located in the reservoir for actuating the means for operating the valve, a water inlet pipe for admitting water to the reservoir whereby the thermostatic control means is actuated, and a pilot burner for maintaining the water in the reservoir in a heated condition.

A water heater comprising an enclosed casing provided at its bottom with a burner, means for regulating the flow of gas to the burner, a reservoir located inside the casing and provided therein with a thermostatic control means for ac ting the means for regulating the flow or gas to the burner, a water inlet pipe connected to the reservoir adjacent the thermostatic control means, whereby the water entering the reservoir causes the thermostatic control means to operate, means connected to the reservoir for withdrawing the water therefrom and separate means for maintaining the water in the reservoir in a heated state.

5. A water heater comprising a casing having a burner located at the bottom thereof, means for delivering fuel to the burner, a reservoir located inside the casing and provided with means for admitting water thereto, a coil connected to and encircling the reservoir, athermostatic control means located inside the reservoir adapted to be actuated by the flow of water into the reservoir, means connected to the casing and operated by the thermostatic control means whereby the amount of fuel delivered to the burner may be automatically regulated, and means for both igniting the fuel delivered to the burner and for n'iaintaining the water in the reservoir in a heated condition.

LESLIE E. PETERS.

Images