US2122333A

US2122333A - Liquid vaporizing device

Info

Publication number: US2122333A
Application number: US72438A
Authority: US
Inventors: Charles T Asbury
Original assignee: Individual
Current assignee: Individual
Priority date: 1936-04-02
Filing date: 1936-04-02
Publication date: 1938-06-28
Anticipated expiration: 1955-06-28

Description

June 28, 1938. Y c. T. AsBURY 2,122,333

Lv-IQUD VAPRIZING DEVICE Filed April 2, 1956 `2 Sheets-sheet 1 l Y June 28, 1938. C-T ASBURY 2,122,333

LIQUID VAPORIZING DEVICE Filed April 2, 1936 2 Sheets-Sheel. 2

Patented June` 28, 1938 Charles T. Asbury, Elkins Park, Pa Application April 2, 1936, Serial No. 72,438 v claiml.

This invention relates to new and useful improvements in liquid atomizing devices.

The principal object oi the present invention is to provide a device of the character set forth constructed and arranged toproduce maximum atomlzatlon of a liquid.

Another object of the invention is to providev a device of the stated character the parts of which may be readily and easily installed and removed for purposes of cleaning and repair.

A further obiectof the invention is to provide a 'device oi' the type described which is relatively small and compact and of simpIiied, inexpensive construction. 'I'heseand other objects of the invention and the features and details of construction 'thereof are set forth hereinafter and shown in the accompanying drawings, in which:

Fig. l.` is a view in elevation showing the invention in association with the hearth of a liquid Afuel burner.

Fig. 2 is an enlarged view in section vertically through the rotary distributing head.

Fig. 3 is a yfragmentary view in perspective of a portion of the periphery of the distributor head.

Fig. 4 is a view in section on line 4l, F18. 2. Fig. 5 is a View in section on line 5-5, Fig. 2'. 6 is a i ientary view in perspective showing a med form of one feature of the invention.

Fig. 'i is a view in. elevation partially in section showing another form of the invention and Fig. die a view in perspective of an atomizing disk 'or member embodying the present invenwhich extend a plurality of upwardly projecting radially disposed ribs or vanes 5 pressed, stamped or otherwise formed in said member 3 at predetermined substantially equally spaced interv 5o vals circumferentielly thereof. The radial ribs or vanas t gradually increase in height and width outwardlyfrom the channel 5 of the member 8, and are otherwise constructed and ar-` ranged so that the side lor wall thereof which 56 faces in the direction of rotationof the atomizer I. is substantially vertical as indicated at Fig. 'I of the drawings.

In addition tothe foregoing, the intermediate plate or disk-like member 3 is -provided with a 'lin radially projecting substantially horizontal ilange 5 or the like 8 which is offset downwardly below the plane of the radial extremities of the vanes 5. A plurality of relatively narrow legs or like elements 9 project vertically upward from the periphery of the ange 8 of the member 3 at A1o equally spaced intervals circumferentially thereof in approximate alignment with the upstanding vanas 6 of said member and have their upper end portions bent or turned outwardly at right angles lto said elements and tol form a plurality l5 of supporting surfaces In, the purpose for which will be described more in detail hereinafter.

The upper member 2 of the atomizer head I previously mentioned is provided with an annular depending beadI I, the diameter of which is pref- 20 erably slightly in excess of the diameter of the channel 5 in the intermediate member I, and the adjacent portion I2 of said member 2 preferably inclines at a slight angle outwardly to the side or wall portions I3 thereof' which diverge 25 downwardly and terminate at their lower edge in a relatively narrow peripheral ange I4, the outer circumference of which is substantially equal to that of the outer end edges -of the supporting surfaces I0 of the legs 9 of the inter- 3o mediate member 3. The top portion I2 of the upper member 2 of the head I is inclined outwardly from the bead II at a slight angle with respect to the horizontal so that when rotation of the distributor head I ceases, liquid remaining 35 on the inner surface thereof will flow inwardly and be intercepted' by the bead I I which causes said liquid to drop back into the lower member 3- and the oil channel 5 therein, and further for the purpose of facilitating atomization of certain 40 liquids, -it may be found desirable to provide the side'or wall portions I3 of the top member 2 of the head i with a substantially roughened or uneven innerl sui-face in the manner shown in Fig. 6 of the drawings. 45

The upper and intermediate members 2 and 3 oi' the head I are preferably permanently secured together by welding or other suitable means at the several points circumferentially of each of said members where the peripheral'ilange It 5o of said top member 2 rests upon the supporting surface portions I0 of the vertical legs 9 of said intermediate member 3, and a plurality of substantially radially extending angularly disposed blades or vanes I5 are formed in any suitable 55 manner in those portions of said peripheral ilange I4 of the top member 2 that reside intermediate said vertical legs 9 of the intermediate member 3,

The previously mentioned lower disk like member 4 is of .annular form and the inner diameter thereof is preferably slightly in excess of the diameter of the channel 5 of the intermediate member 3 while its outer diameter is somewhat less than the outer diameter of the flange 8 of said intermediate member 3. Asshown the member 4 is substantially horizontal and yprovided with a plurality of upstanding vertical legs or the like. I6 located at substantially equally spaced intervals circumferentially thereof, the upper end portions of said legs I6 being bent or turned outwardly at right angles to the legs I6 to form toes or surfaces I1r by means of which.

the lower member 4 is preferably permanently secured in any suitable manner such as welding to the underside of the flange 8 of the intermediate member 3 and made a component part of the head I. In addition to the foregoing the lower member 4 is provided with a plurality of angularly' disposed upstanding vertical blades or vanes I8 formed intermediate the inner and outer circumferential edges of said member by stamping or pressing out portions thereof in the usual manner, although such blades or vanes I 3 may be independently provided and permanently secured to the upper surface of the member 4 if desired. v

In the present instance the lower disk member 4 has been shown and described as being permanently secured to the under side of the ange 8 of the intermediate diskmember 3. However, in installations of larger size it may beldesirable to secure said disk member 4 to the under side `lin said member 3 as of the disk member 3'in such manner that the former may be readily removed and re-attached to the under side of the disk 3 in inverted position with the vanes I8 thereof extending downwardly from the under side. in-which position said blades or vanes have been found to 'provide a greater quantity of air for discharge into contact with the fully latomized liquid.

A boss or the like Isis secured centrally at the under side of the top member 2 of the head I. and provided with a tapered bore 28 arranged to receive the similarly tapered upper end 2| of the shaft 22 of a motor or other source of rotative power (not shown), the upper end of said shaft 22 being tapped as indicated at 23 to receive a screw or the like 24 for securing the distributor head I to the shaft 22 for rotation therewith. A supply pipe 23 extends vertlcally upward through the central openings in the head members 3 and 4 and has lits upper end directed inwardly of the annular channel indicated by reference.

numeral 23. l

Under certain conditions of operation of a liquid fuel burner'having a rotary `distributor head of the present ttype, it may be found de' sirable to mount one or more hoods orthe like 21 thereon for the purpose of protecting and insulating said memberA 2 from-the excessive temperatures of .the surrounding combustion chamber and reducing carbonization of the fuel and the formation of soot on the under side thereof to a minimum, and ifdesired apertures may be provided inwardly adjacent' the head 'I of the top-member -2 andthe periphery 4oi! such hood members 21 as indicated at 23 and 23 respectively to provide openings for the circulation of air within thespace therebetween. It

also be advisable under various operating condi-- tions to provide fins or blades 21a at the under side of the hood 21 for the purpose of augmenting the circulation of air between the latter and the upper head member 2 by drawing air inwardly oi' the openings 28 and discharging the 'same outwardly through the openings 29 therein.l

' ing a groove or channel 34 in the upper face thereof circumvents said hearth 30 inwardly adjacent the previously mentioned refractory structure 32, said groove being arranged to receive a coil of wire 35 or other relatively open heatl impervious structure such as screening or the like, the convolutions or strands of which are relatively spaced for the purpose of further distributing and breaking down the vaporized fuel and greatly decreasing the time required for vthe ignition of said fuel as it is discharged from the head Ir To operate. the device. the distributor head I comprising the members 2, 31 and 4-is rotatably driver by the shaft v22 in a counter-clockwise direction with respect to the drawings hereof and liquid deposited in the channel 5 of the member 3 from the pipe 28 is forced radially outward over the upper surface of said member 8 between the upstanding ribs or vanes 8 thereof, the centrifugal force created by rotation of the head I causing the greater portion of said liquid to im pinge'against, the substantially vertical forward y or leading face 1 of the ribs or vanes 8 and be partially atomized and-vaporized during its-outward movement. said partial vaporization being effected by contact of the liquid with air which during operation of the distributor head aspirates upwardly through the opening surrounded by the channel l of the intermediate disk 3 and outwardly over the latter intermediate the up# standing vanes 3 thereon. When the partially atomized and vaporized liquid reaches the radial extremities of the ribs orvanes 8 it is discharged or flung against the inner surface of =the out- .wardly spaced side or wall portions I3 of the upper member 2 with sufficient impact to effect substantially complete atomization and vaporisation of said liquid which is aided or enhanced by reason of the differential between the respective peripheral velocities of the radial extremi# ties of the vanes 8 of the intermediate member 3 and the outwardly spaced inner surface of the side or wall portions I3 of the'top member 2.

During continued rotation of the head I the blades or vanes I3 of the lower member 4 ofthe head I and further discharged at a substantial velocity radially. outward through the smaller relatively closely spaced blades or vanes Il which function to-increase still further the atomization and vaporization of the liquid which is then discharged outwardly from the' head I and uni- 8,182,888 formly distributed throughout the combustion chamber of the burner in the form of a fine mist or Afog which,` prior to ignition, falls upon the relatively opencoil or screening Il located at'theV periphery of the hearth structure where it is quickly ignited and the flame rapidly distributed uniformly around said hearth causing the liquid -thereafter discharged from the head I to burn more or less in suspension 4above the hearth, whereby carbonization and the formation of soot within the burner chamber and distributor head i is substantially eliminated. In addition to the foregoing, the relatively open coil or screening I5 functions` tofretaln the hot gases of combustion adjacent the peripherall area ofthe combustion chamber so that ,said gases may pass olf upwardly along the side wall area of said chamber whereby a more uniform distribution of the products of combustion tlnoughout the chamber is effected and the efiiciency lof the burner materially in- "provided with radially disposed ribs or vanes .a

pressed, stamped or otherwise formed in said member 3a at substantially predetermined equally spaced intervals circumferentially thereof, said radial ribs or vanes ia being of gradually increasing height and widthloutwardly of the member 3a and otherwise constructed and arranged so thatthe side or wall thereof which faces in the direction of rotation of said member is substantially vertical as indicated atla in Fig.

8 of the drawings.

In addition to the foregoing, the plate or disk member 3a is provided with a peripheral flange '36 which extends parallel to the axis of said member to a point beyond the ends of the radial ribs or vanes .6a in Voutwardly spaced relation with respect to the radial extremities lthereof, and has its inner surface corrugated or ribbed as at 31. A plate or like guard member Il may be secured in any suitable manner such as by welding to the outer end portions of each of the radially extending ribs or vanes 6a to overlie the latter and eliminate as far as possible the formation of soot or carbon on the surfaces of said ribs Baas a result ofthe intense heat of combustion when said atomizing device is employed in liquid fuel burners and the like.

VIn the present instance, the plate or disk member 3a is provided with a central bore or opening 20a to receive` the end of a shaft 22a of a motor or other'source of rotative power M, said member la being iixedly secured on said shaft 22a for rotation therewith. As shown, the shaft 22a `oi' the motor M is provided -with an axial bore 3l connecting at one end with a transverse bore 40 l which opens on to the central portion of the `theshaftf22u of the motor M and is located intermediate the latter and the plate or disk member 75 3a. A casing, housing or like structure designated generally as 4I substantially encloses the fan 4| and is provided with a ilange 44 which extends p; allel to the shaft 22a and the flange of disk la in outwardly spaced relation with respect to said flange to a point substantially in register with the outer peripheral edge of the latter. A partition member 4i sub-divides said housing or casing 43 into an air chamber 46, having a plurality of circumferentially spaced-fair inlet openings 'l'thereto, and a fan chamber 4B, said partition member 45 having an opening 49 centrally` therein for the ingress of air to the fan 42 from said air chamber 4l.

In operation of the device, the fan 42 and the plate or disk atomizer 3a are rotatably driven by the shaft 22a and motor M and liquid fed through the bore 39 of said shaft from pipe 4| discharges through the transverse bore 40 on to the ribbed or vaned face or surface of said member 3a and is forced radially outward over the upper surface thereof between the upstanding ribs or vanes 6a..l

the centrifugal force caused by rotation of said member .causing the greater portion of said liquid to impinge against the substantially vertical forward or leading face 1a of said ribs or vanes where it is partially atomized during such radially outward movement. When the partially atomized liquid reaches the radial extremities of the ribs or vanes 6a it is discharged or flung '3a' with sufficient `impact to effect substantially complete atomization of said liquid due to the diil'erentialexisting between the respective peripheral velocities of the radial extremities of the vanes 6a and the inner surface of the outwardly spaced ilangeli as well as said corrugated or ribbed inner surface formation of the latter.

-During continued rotation ofthe member la the atomizedliquid passes along the inner cor-v rugated or ribbed surface of the ange 38 to the outer peripheral edge thereof from which it is discharged `into contact with the blast of air from the fan or the like 42 emerging through the space between said flange 38 of said member 3a and the flange portion 44 of the housing or casing 43. As an alternate construction of the present form of the invention, the flange 36 which ex- -tends parallel to the axis of rotation of the disk la may be entirely eliminated and the liquid Vdischarged from the extremities of the radial ribs 6a by centrifugal force allowed to impact directly against the inner surface of the outer portion of the flange 44 of the stationary fan casing 43, where it is thoroughly atomized and immediately vaporized by the blast of air discharging outwardly'between said flange 5B and the periphery of the disk 3a. from the fan 62.

Although' the description of the present invenl `tion has been set forth more particularly with shall be precisely limited thereto but thatl changes and vmodifications may be incorporated where within the scope of the annexed claims.

I claim; 1. In a device of the character described, a centrally apertured rotatable disk imperforate between its inner and outer peripheries and having ribs on its imperforate portion disposed at centrally apertured rotatable disk imperforate between its inner and outer peripheries and having ribs on its imperforate portion disposed at substantially equally spaced intervals lcircumferentially thereof,- means for feeding a liquid onto said disk, means for rotating the disk to cause the iiquid to vbe discharged outwardly thereor by centrifugal force, impacting means rotatable with the disk arrangedin outwardly spaced relation with respect to the ribs for atomizing the liquid discharged therefrom, means operatively associated with said impacting means to still 4further atomize said liquid after the saine contacts the impacting means, and means operable to direct air into contact with said atomized liquid to thoroughly vaporize the same.

3, In a device of the character described, a centrally apertured rotatable disk imperforate between its inner and outer peripheries and having ribs on its imperioratel portion disposed at substantially equally spaced intervals circumferentially thereof, means for feeding a liquid onto said disk, means for rotating the disk vto 4 cause the liquid to be discharged outwardly thereof by centrifugal force, impacting means rotatable with the disk arranged in outwardly spaced relation with respect to the ribs for atomizing the liquid discharged therefrom, means operatively associated with said impacting means to still further atomize said liquid after the same contacts the impacting means, a fan rotatable with the disk, and a casing having air inlet openings substantially enclosing said fan, said casingbeing constructed and arranged to direct air from said fan into contact -with the atcmized liquid discharged from said impacting means to vaporize ,the same.

r 4;..In a device of the character described, a centrally apertured rotatable disk imperforate between itsinner and outer peripheries and hav-- ingribs V on its imperforate portion disposed at substantially equally spaced intervals circumferentlslly thereof, means fc-r feeding a liquid onto said disk, meansfor rotating the -disk to cause the liquid to be discharged voutwardly thereof 'ey centrifugal force, impacting means rctatable with the disk arranged in outwardly spaced relation with respect to the ribs for atomizing the lliquid discharged therefrom, means operatively associated with said impacting means to still further atomize said liquid after the same contects the impacting means, means operable to .direct into contact with said atomized liquid to thoroughly vaporize the same, a fan rotatablewlth the disk, and acasing having lair inlet openings substantially enclosing said fan, said casing having a portion surrounding` said impacting :means in spaced .relation with-v respect thereto sir from said ian'is directed into conwith the atomised liquid dischred from thoroughly vaporise the 5. In a device'ofA the character described, a

liquid fuel distributor including a centrally apertured disk having a liquid receiving channel outwardly adjacent said aperture and upstanding vanes extending raally outward from said channel at predetermined spaced intervals circumferentially of said disk, means for feeding a liquid Y into the channel, means for rotating the disk to cause said liquid to collect adjacent one face of the vanes by centrifugal force, a secondv disk having a portion arranged in outwardiy spaced relation with respect to the varies of the rst disk and in the path of discharge of the liquid therefrom so that said iiquid will impact against said portion and atomige, means projecting outwardly from the impacting portion of said second disk operable te still further atomize the liquid after the same contacts said impmting portion, and a thdrd disk rotatable with said rst and second disk, said third disk having means constructed and arranged. to direct an air current into contact with-said atomized fuel to vaporize and discharge the same outwardly of the distributor substantially in the form of a fog. l

6. In a device of the character described, a centrallyv apertured disk imperforate between its inner and outer peripheries and having substantially radial ribs on its imperforate portion at equally spaced intervals lcircumferentially thereof, means for feeding a liquid onto the ribbed surface of the disk, mear-ts for rotating said disk to cause the liquid to move outwardly thereof between the ribs and be discharged from the disk by centrifugal' force, a flange on said disk extending in outwardly spaced relation with respect to the extremities of said ribs and arranged for engagement by the liquid discharged from the disk with s ulcient impact to thoroughly atomize the same priorto discharge from said flange, a fan rotatable with said disk, and a; casing having inner and outer peripheries and having substan' tially radial ribs on its imperforate portion at equally spaced intervals circumferentially thereof, said ribs being of gradually increasing height *and4` width outwardly of said disk, means for feeding a liquid onto the ribbed surface of the disk, means for rotating said disk to cause the liquid tomove outwardly thereof `between the ribs and be discharged from the disk by centrifugal force, a flange on said disk extending in outwardly spaced relation with respect to the extremities of said ribs. and arranged for engagement by the liquid discharged from the disk with sumcient impact to thoroughly atomize the same prior to discharge from said flange, a fan rotateble with said disk, and a'casing having air inlet i openings thereto substantially enclosing said fan,4

said casing having an open ended flange portion surrounding the ilrst mentioned flange in spaced relation with respect toftlie latter wherebyair.r

from the' fan is directed into contact with the atomized liquid discharged from said i'irst flange to thoroughly vaporize the said liquid.

8. a device of the character described, a i centmlly apertured disk of substantially frustoconical form imperforate between its inner and 'louter peripheries and having substantially radial ribs on its'imperiorate 'portion at equally spaced intervals circumferentially' thereof, said ribs be ing o! gradually increasing height and width outwardly .of said disk, means for feeding a liquid onto the ribbed surface ot tlie disk, means for rotating said disk to cause the liquid to move outwardly thereof between the ribs and be discharged from the disk by centrifugal vforce, a

flange on said disk extending in outwardly spaced relation with respect to the extremities of said ribs and arranged for engagement by the liquid l spect to the latter whereby air from the .tan is directedl into contact with the atomized liquid discharged from said ilrst ilange to thoroughly l0 vaporize the said liquid.

v CHARLES T. ASBURY.