US1855187A - Oil burner - Google Patents

Description

April 26, 1932- F. HvosLEF 1,855,187 OIL BURNER l Filed Dec. 27, 1928 2 Sheefs-Shee(l l /N V5 NTO@ April 26, 1932.

F. HVOSLEF OIL BURNER Filed Deo. m2 /Sheets-S'heet 2 Patented Apnze, 1932 UNITED STA rnnnnrx w. HvosLEr, or DEARBOBN, MICHIGAN, AssIGNon To THE TmirEN SILENT AUTOMATIC COMPANY, or Imfrnorr,l MICHIGAN, A ConronA'rroN or mcHmAN vOIIII'IB URNER Myv .invention relates to oil .burners and has for its principal object a burner that is simple `and compact in construction, that provides a thoroughly atomized fuel and an y"bustion thereof, that regulates the flow of air so as to prevent excessive whirling and eddying thereof and that simply and effectively takes care of any leakage of oil from the atomizing pump. The invention coni sistsprincipally in the oil burner, in the device for preventing' leakage of fuel from the atomizing pump and in the parts and combinations and arrangements vof. parts hereinafter described and claimed.

In the accompanying drawings,

Fig. 1 is a part side elevation, part sectional view of an oil vburner embodying my invention,

Fig. 2 vis a top plan view,a portion'of the casing being broken away, and Fig. 3 is a cross-sectional View on the line 3 3 in Fig. 1. y

' A housingl has a nosing 2 secured tothe z5 front end thereof as by screws 3.v Spac ed away from the rear end of the housing 1 by lugs 4 and secured thereto as by screws 5 is an end wall member 6, two mounting -legs 7 being secured to said end wall member and a third 8 to said nosing. Secured to said rear end of said housing 1 as by screws 9 and forced away therefrom by means of coil v springs 10 on said screws is a cover plate 11.

By adjusting the distance of said cover plate 11 from the end of the housing 1, the amount of air entering the housing may be regulated.

The interior 'of the housing 1 is provided with a plurality (six. being thev preferred A number) of equiangularly spaced radial fins l2 that extend lengthwise of the housing and support at their inner front end portions an annular member 13 having at its center a tubular bearing portion14 through which extends a shaft 15. The rear end portion 16 of said tubular bearing member 14 itself constitutes the bearing for the rear end of said shaft 15 and a suitable bushing 17 is provided for the forward endof said shaft 15. A packing 18 is provided for the body portion of said shaft and said bushing 17 has agroove 19 in its upper surface that communicates` with a radial passageway 204 throughsaid annular memberVv 13, whereby 15 is a pump rotor 21, the pump body 22 being.

mounted against the forward face of said annular member 13 and the pump cover 23 being secured to said pump body 22. U T he pump cover 23 is provided with a pro-v jectmg stem 24 that has a longitudinal bore i lubricant may 'be supplied for said packing adequate supply of air to support the com- 18. z l

Mounted on the forward end of said shaft 25 communicating with a transverse bore 26 in said cover which has a small longitudinal .bore 27 at its end communicating with the interior of the pump body 22; so Ithat atomized fuel leaving the pump traverses a substantially Z-shaped path. The end ofsaid projecting stem 24Ais threadedv and a burner tip or nozzle 28 is screwed thereon. Secured to said projecting stem 24 as by a set screwv 29 is a conical shell 30 that projects beyond the end of the nozzle 28 and is provided with a plurality of 'slotted openings 31 about in line with the end ofv said nozzle. A spark plug. 32 for igniting fuel is secured to said nosing 2 and its points 33 project into the interior thereof a little in front of saidconical-burner shield 30. T Rigidly mounted on said bearing member ,14 is the armature 34 of an electric motor whose rotary field 35 is secured to a support j 36 that is mounted on the rear endv of said shaft 15, said rear end of said shaft and the bore of said support' being tapered sot-hat the two may be firmlv secured together by means ofa nut 37 on the end of the shaft.

Secured to the field support 36 as by screws v38 are fan blad-es 39 that force `air through the housing and into the nosing. The outside diameter of said fan is slightly less than the inside diameter of said housingand the fan is disposed adjacent to the rear ends of said fins 12. The air from the fan would normally have a whirling motion which would inter-- f ere with combustion, but the radial fins prevent this whirling motion of the air and I cause it to flowstraight through the-housing 1 and nosing 2. The conical shield 30 in which 2o 44 and by reason of the suction of the pump the nozzle is disposedprotects the flame from excessive Vair currents. c

Fuel oil is supplied to the atomizing pump by means of a' supply .line including a mag` netic valve 40 of suitable constructionV and a feed pipe 41 that terminates in an opening in the pump body22 Air enters the pump the cross portv to communicate with said4 -groove'44. Thus if any -oil should vescape from the pump it would enter said groove wouldpass back through said air passageway 42 and said lcross port 43 into the body of the pump.

iAny suitable electric' control set may be provided for the motor and for the spark plug, the drawings showing diagrammatically a control box 45 and a transformer box 46 n struction, the shortjmoto'r sha for the spark plug.

The above described oil burner has numerous advantages. The motor, fan and pump are all enclosed in a housing which j, protects them from injury and from unnecessary tampering, the motor is cooled bythe passage of air thereover, the air fan andfuel'pump balance each other, the compact arrangement makes for simplicity and inex ensive con-` t eliminates the necessity for universal joints, leakage of, fuel oil from the pump is prevented by simple L and effective means and the burneris very quiet and iseconomical in operation. Ob-

viously numerous changes might be made.

' vwithout departing from the invention and I do not wish to be limited to the precise construction shown. x

WhatIclaimis:l -1 1. An oil burner comprising a housing including a nosing portion and having an air opening at, the rear end thereof, an annular mounting member disposed centrally of said housing, fins in said housing extendin lengthwise .thereof and supporting sai mounting member, a tubular bearing member extending lengthwise of the housing and supj ported by-said annular'mounting member, a

' shaft extending through said bearing member,a pumprotor on the forward endof said shaft, apump body secured to said mounting member, a pump coversecured to said body and having a fuel passageway opening into the interiorof said pump body, a burner nozzle secured to said p umpcoverl and commu nicating with said fuel passageway thereof, means 'for supplying oil and air to the intelintensi' rior of said pump body, a fanat the rear end of said shaft and a motor between said fan and pump for rotating said shaft.

2. An oil burner comprising ahousing including a 'nosing portion and having an air opening at the rear end thereof, an annular mounting member disposed centrally of said housing, fins in said housing extending lengthwise thereof and supporting said.'

mounting member, a tubular bearing member extending lengthwise of the housing and supported by said annular mounting member, a shaft extending through saidbe'aring member, a pump rotor on the forward end of said shaft, a pump body secured tosaid mounting member, a pump cover secured to said body Aand having a fifel passageway a burner nozzle secured to said pump cover, land communicating with said fuel passageopening. into the interior of said pump body,

way thereof means for supplying oil and air v tothe interior of said pump body, a fan at the rear. end of said shaft, a motor between said fan and pump for rotating said shaft,

a conical shield-member mounted on said pump cover over said burner nozzle and proecting beyond said burner nozzle and means in said nosing beyond the end of said conical shield member for igniting'fuel.

a 3. An oil burner comprising a housing including a nosing portion and having an air opening at the rearend thereof, an annular Y mounting member disposed centrally of said housing, fins in said' housing extending Y lengthwise thereof, and supportingl said mounting member, a tubular bearing mem-` ber extending lengthwise of the housing and supportedby said annular mounting' mem-` ber, a shaft extending through said bearing member, a pump rotor on the forward vend of said shaft, a pump'body secured to said" mounting member, a pump cover secured to said body and having a fuel passageway opening intol the interior vof said pump body, a burner nozzle secured to said pump cover and communicating with said'l fuel passageway thereof, -means for supplying oil and air to the interior yofsaid pump body, a fan at the rear end of said shaft, al

motor'. between said fan and pump for rotating said shaft, a conical shield member mounted on said pump cover'over said burner' nozzle and projecting beyond said burner nozzle, said shield having holes therethrough about in line with the-forward ond of said burner nozzle and means inA said nosing bevond the end of saidconical `shield member for igniting fuel. I

4. lAn oil burner comprising a housing in cluding a nosing portion and having an/air opening at the rear end thereof, an annular mounting member'disposed'centrally of said housing, a tubular bearing member extending lengthwise of the housing.v and supportefdf o bysaid annular mounting member, la sha extending throughlsaid bearing membenal pump rotor on the forward end of said shaft,

avpump body secured to said mounting memr, a pump cover secured to said body and having a fuel passageway opening into the i interior of saidpump body, a burner nozzle secured to said pump cover anc'lcommunicating with said fuel passageway thereof, an oil. supply pipe opening into the interior of said pump body, said annular mounting member having an airpassageway therethrough opening into the interior of said! pump body, a fan at the rear end of saidshaft and amotor between said fan and pump for rotating said shaft.

5. An oilburner comprising a housing including a. nosing portion'land havingan air opening at the rear end thereof, a plurality of equian member extending lengthwise of the housing and supportedV` by said annular mounting member, a shaft extending through lsaid bearing member, a pump'rotor on the forward end of said shaft, a pump body secured to Vsaid mounting member, a pump cover'secured to said body and having a fuel passage- 'way opening into'the interior of saidpump body, a burner nozzle secured to said pump cover and communicating with said fuel passagewayA thereof, separate oil and air passageways leading to said pump body, a fan l at the rear end of saidv shaft, an electric mov tor armature fixed on said tubular bearing member, a rotary motor field mounted on a supportha-ying a beveled bore in which tits the tapered re'ar end portion of said shaft, a nut for securing said field support to `said shaft and fan blades secured-to said field support.

Signed at Detroit', llfichgan", this 20thv day i of December, 1'928. A

FREDRI'K HVOSLEF.

larly spaced ns extending lengthwise o said housing, an annular mounting l 'member disposed centrally Iofv said housing and supported by said fins, a tubular bearing

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