US1619889A

US1619889A - Oil-burner boiler

Info

Publication number: US1619889A
Application number: US6910A
Authority: US
Inventors: Lewis L Scott
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-02-04
Filing date: 1925-02-04
Publication date: 1927-03-08
Anticipated expiration: 1944-03-08

Description

8 1927. March L. SCOTT OIL BURNER BOILER.

Filed Feb. 4;. 1925 2 Sheets-Sheet 1 AL; 'ATTORNEYJY a ch L. scoTT OIL BURNER BOILER 2 Sheets-Sheet 2 Filed Feb. 4, 1925 travel, means LEWIS L. SQO'IT, OF ST. LOUIS, MISSOURI.

OIL-BURNER BOILER.

Application filed February This invention relates to improvements in hot water or steam boilers and particularly. to boilers of that type provided with an oil burning equipment.

An object of the invention is to provide a boiler of compact arrangement while, at the same time, obtaining a maximum travel ofthe products of combustion along paths or channels where it will contact with the walls of the water containing portions of the boiler.

A further object is to secure a uniform heating of the water throughout the boiler, this being. accomplished by the provision of a plurality of ducts through which uniform quantities of the products of combustion being provided for securing a uniform distribution of said products to the several ducts or fiues, regardless of the varying distances between the several fiues and the stack or discharge outlet for the products of combustion.

With these and other objects in view, the invention consists in certain novel details and combinations of parts, all as will hereinatter be more fully described and the novel features thereof particularly pointedout in the appended claims.

In the accompanying drawings,

Figure 1 is a vertical sectional view of a boiler embodying the present improvements.

Fig. 2 is a transverse sectional view on the I line 2-2 of Fig. 1.

Fig. 3 is a similar view on the line 3-3 of Fig. l.

The present construction preferably embodies an oil burner torhcating the water, this oil burner equipment comprising a motor l for operating aituel pump 2 and a blower wheel that is enclosed in the casing 3. Fuel is brought trom any source by the pump 2through the pipe 4 and is discharged by said pump through a pipe 5 to the fuel s ray nozzle 6 located. within the boiler.

uei sprayed from nozzle 6 is ignited by the spark plug 7 and air from the air blower 3 is' conducted into the air receiver 8 where it is mixed with the fuel from nozzle 6. The nozzle and spark plug are located at the top of the boiler and the entire mixture after being i nited is conducted downwardly through a ame director 9 into the main portion ot the combustion chamber 10 which is netcrably cylindrical in cross section.

I the present instance the boiler com- 4, 1925. Serial No. 6,910.

prises inner and outer shells 11, 20, the space between the two shells constitutin the water space or boiler and the space wit in the inner shell 11 constituting the combustion chamber. lhe bottom portion of the boiler is formed by a base casting 17 having an em space therein above a water space 16, the partition between the airspace and water space constituting the bottom wall of the combustion chamber 10. Water is supplied to the boiler through a pipe 26, in which there is a pressure control or reducing valve such as disclosed in prior U. S. Patent No. 1,353,844., the water being supplied from said pipe to the bottom water space 16 from whence it can flow to the water space 18 between the two shells by way of a series of supplies, such as indicated at 21. Preferably, the boiler is made up of three sections, the base section 17, an intermediate section, and a top section, the water space between the two shells in the two upper sections being substantially continuous by reason of the provision of aseries of nipples 25 at the junction of the two upper'sections. Steam or water is taken on from the'upper end of the water space 18 through the outlet pipe 33 and the return pipe opening, indicated at 32, is located in the base section 17. With a structure as thus far described,

the downward travel of the burning mixture along the inner shell 11 will result in raismg the temperature of the water in space 18 to the temperature desired and it will be noted that the partially cooled gases will impinge upon the bottom of the combustion chamber and efi'ect a rise in the temperature of therelativcly cold, freshly supplied water in the base section.

To further guard against the loss of any of the heat units, however, there is provided a series of fines for carr ing ed the products of combustion, these use extending upwardly from the airspace in the base section through the water space 18 in the two u per sections. Each of said fines is locate entirely within said water space 18 and is totally surrounded, throughout its length b water in said space, so that practically all the heat of the productsoii combustion is utilized in heatingthc water.

Preferably saidflues are arranged around the boiler in pairs, there being three

pairs

36, 36 and 36 in the present instance and the dues of each pair are connected to a stack or discharge opening 37 for the prod lltlh ill lEi

b'il

till

note of combustion. As the gases passing through the two fines 36 farthest from stack 37 contact with a larger heat absorbing area and travel a longer and more tortuous path than those passing through lines 36 nearest said stack, it is apparent that in the absence of any re blatmg means there will be an uneven distribution of gases through the several sets of tube, larger quantities of gases passing through fines 36 than through he others. For this reason, means are provided for securing a uniform distribution of the roducts of combustion flowing through the dues from the bottom of the combustion chamber. While this might be accomplished in other ways, the preferred construction is to raduate the openings between the fines and stack, the fines 36 nearest the stack communicating therewith through a relatively narrow opening 39 atthe end of space 33 to which fines 36 connect; fines 36 farthest from the stack communicating therewith through a relatively large opening 42 at the end of the space into which those fines merge; and the intermediate lines 36 communicating with said stack through a space 40 and opening 41 which is of a sure substantially the mean of openings 39 and 4:2. This is the referred arrangement where three sets of ues are present but it will be understood that the openings through which the intermediate fines connect with the stack will be graduated in accordance with the number of dues used.

' A. boiler oil this construction operates very eficiently but in instances where it is desired to provide hot water in the top of the boiler in a very short period of time a wa ter coil 12 is arranged in the combustion chamber 10. The coil is supported in chamber 10 b spacers such as 13 in order that the pro nets of combustion will impinge against the wall of the water space as well as against the coil and the ends of said coil are connected to the lower water chamber 16 as at 15 and to the upper end of the main water space as at 14:.

As safety elementsthe boiler is provided at its up or end with a gage and at its lower on with a reliet valve 29 by a pipe 30., This valve is connected bya pipe 31 to a sewer. lln the base section there is also a small passageway or duct 35 through which unburned fuel is conducted to the exterior of the boiler. These last two elements form no art of the present invention and need not he further described here. (They are fully described in my prior patent hereinbefore referred to.)

This arrangement, provides a boiler in which is embodied what is commonly known as the contra-flow principle, the eatest amount of heat being at the top of t e combustion. chamber 10 and after the gases are T gradually reduced in temperature during neiaeee their downward travel in said chamber they come in contact with the comparatively cold water supply in chamber 17, partially heat 1. In a boiler, the combination with a shell so havipjg a combustion chamber therein, of a plur ity of fines of different lengths communicating with said chamber and with a discharge outlet for the products of combustion, the openings of communication between the flues and said outlet being grad noted in size according to the length or the due, the opening of the shortest flue being smaller as compared with the opening from the longest flue.

2. .ln a beiler, the combination with a shell havin a combustion chamber therein, of a plura ity of dues oi diderent lengths commumcatin with the lower end of said chamber and coding upwardly therefrom to a discharge outlet for the products of combustion, and openings of communication between the fines and said outlet being graduated in size according to the length of the due, the opening from the shortest due being smaller as compared with the opening from the longest flue, whereby the products of combustion from the combustion chamber fire uniformly distributed to the several ues.

3. lln a boiler, a combination with a shell having a combustion chamber therein, of a plurality oft fines communicating with said chamber and with a discharge outlet for the products of combustion, said dues being of varying length, andmeans for governing the proportionate quantity or volume of products of combustion passing through the individual fines causing the said products of combustion to be uniformly distributed through the several dues regardless of the difierences in the length of the respective does.

t, in a boiler, the combination with a shell having a combustion chamber therein, of a, lurahty oil fines communicating with the ower end of said chamber and leading up-' wardly therefrom to a dischar e outlet for the roducts oil combustion, sa-i dues being oi? ide'rent lengths, and means for determining the draft conditions in the individualdues to govern the proportionate volume of products at combustion passing through the individual lines whereby said products of combustion are uniformly distributed 'llli through the several flues re rdless of the differences in the length of t e several flues.

5. In a boiler, the combination with a shell having a combustion chamber therein, of a plurality of flues of different len hs arranged in pairs around said cham r and wmmunicating with the lower end thereof, each flue leading to a discharge outlet for the products of combustion, the opening between said outlet and the shortest pan of flues being comparatively narrow, the open ing between said outlet and the longest pair of flues being comparatively large, and the opening between the outlet and the remaining pair of flues bein substantially the mean of the width of t e o enings of the other pairs of fines.

6. A boiler comprising a combustion chamber, the wall of which constitutes a portion of the surface of a water circulating space surrounding the combustion chamber, a connect-ion for supplyin water to a water chamber in the bottom 0 the boiler, said cham-.

ber communicating with said water space and forming the bottom of the combustion chamber, an outlet connection at the top of i said water space, means for initially directpartially spent products of combustion will ing the products of combustion downwardly in contact with the surface of the water space and the water chamber in the bottom of the combustion chamber, whereby the affect the relatlvely cold fresh supply of water in said bottom water chamber, a plurality of flues extending from the bottom of the products of combustion, said flues surrounding the combustlon chamber, a connection for supplying water to a water chamber in the bottom 0 the boiler, said chamber communicating with said water space and forming the bottom of the combustion chamber, an outlet connection atthe top'of said water space, means for initially directing the products of combustion downwardly in contact with the surface of the water space and the water chamber in the bottom of the combustion chamber, whereby the artially spent roducts of combustion wi affeet the relatively cold fresh supplyof water in said bottom water chamber, a plurality of flues extendin from the bottom of the, combustion cham r upwardly throu h the water space to adischarge opening or the. product of combustion, said flues being of varying lengths and the several flues havin graduated outlets communicating with said discharge opening for uniformly discharging the products of combustion flowing from the bottom of the combustion chamber to the indivi a fines LEWIS L $00