US2331958A

US2331958A - Booster fan and support

Info

Publication number: US2331958A
Application number: US398292A
Authority: US
Inventors: James L Breese; Hayter Bruce; Perry Stanley
Original assignee: OIL DEVICES
Current assignee: OIL DEVICES
Priority date: 1941-06-16
Filing date: 1941-06-16
Publication date: 1943-10-19
Anticipated expiration: 1960-10-19

Description

Oct. 19, 1943. J, BREESEl E1- AL 2,331,958

' BOOSTER FAN AND SUPPORT Filed June 16, 1941 I5 Sheets-Sheet 1 .fawzemraye @ucefager Y an y y ef-ffy Jafar/Myx Oct. 19, 1943. 1 -L BREESE ETAL Y 2,331,958

.BOOSTER FAN AND SUPPORT Filed June 16, 1941 3 Sheets-Sheet 2 3T 42 @MMM Oct. 19, 1943. J, l.. BREESE ETYAL BOOSTER FAN AND fSUPPORT Filed June 1e, 1941 s sheets-sheet s side elevation;

' thepot. The pot may,

lon a flange 1 desired, which Patented a. 19,y 194s UNITED STATE s PATE NT -ori-ICE 'Boos'rnn FAN am) surron'r James L. Breese and Bruce Hayter, Santa Fe,v

' N. Mex., and Stanley Perry, Chicago, lll.. as-

siinors to 'Oil Devices, Santa Fe, N. Mex.,-a limlgted partnership of Illinois4 ,i

application .Tune 1c, 1941, serial No. 3981292 l 113 Claims. (Cl. 230-117) lbooster motor andsupport therefor as may be removed from a pot type .l for example through an air inlet duct of readily inserted in and burner,

restricted cross sectional area.

'..Another purpose is the provision of an improved supporting and spacing means whereby the booster motor and its fan are automaticallyproperly positioned in relation to the burner pot.

Other purposes will appear-from time to ltime "1n the courseLof the specication and claims.

The invention fis illustrated more or'less diagrammatically in the accompanying drawings wherein:

Fig. 1 is a vertical axial section with parts in Fig12 is a similar section on an enlarged scale, illustrating a booster motor and fanin position: F1F13. 3 is a plan view of the structure shown in 8. l Fig. 4 is a similar plan view on a slightly smaller scale, of a variant form of the device Fig. 5 is a section on the line G+S of Fig. 4; Fig. 6 is a sectlonon the line 6 6 of Fig. 4;

Fig. 7 is a view similar to Fig. 3 of a variant form of the device; and v Fig. 8 is a section on the line 8- 8 of Fig. 7. Like parts are indicated by like symbols throughout the s iilcation and drawings.

Referring to the drawings,

air inlets 2 located at various levels. Any suit.- able means may be employed for admitting seciA generally indicates a burner pot having a plurality of primary' ondary air, but we illustrate herein a top row of t secondary air inlet apertures 3 of greater diam,-

eter and closer in spacing than the.primary air inlet apertures the top of the I not having a central aperture 5. 6 is an outer air housing or drum surrounding for example, be supported inwardly extending from the drum 6. The ,drum is preferably substantially air tight, except for anl aperture 8 in the drum bottom 8. 'I'he aperture 8 is aligned with the center of the bottom of the pot l, and the bottom- 8 is spaced suiilciently downwardly from the bottom of the pot ito permit the positioning therein ofthe fan structure below described.

`.An air inlet passage it maybe employed, if

may communicate with an en- 2. 4 is-any suitable nre ring at.

larges portion u secured' tc the bottom' of the drumri. It will be understood that, solar as the securing meansof the fan motor are concerned;

the members i0 and I I .may be omitted, but suchpassages or their equivalent are frequently 'employed in connection with pot type burner in. stallations in which booster fans are employed.

One of the problems is the ready insertion and removal of booster motors and fans without the necessity o'f the removal of such air ducts"as the ducts Iii.

I2 generally indicates' ax motor supporting plate, with which is associated a motor housing il. The details of themotor do riot` form part of the present invention. It will be understood," j however, that any suitable motor means, for example an alternating current motor, may be enclosed within' the housing i2, andmay `be .pro-

vided with an exterior fan shaft i5, which carries Va hub i6. Extending outwardlyfrom the hub I6 are'any suitable generally radial fanblades I1. I8 is any suitable Vjunction box, the details of winch do not formpart of the present invention. It may also be secured to the plate' I2. The plate'p motor, junction box and fan are of. such overall dimensions as to permit their insertion through the end of the conduit i0. The operator may then thrust the assembly so formed up toward the aperture 9.

In orderto provide more accurate positioning and securing of the motor and fan assembly in the aperture 8, the following structure is provided: Radiating from a central securing plate 20 fare a plurality of wire fingers 2|, notched as at 22 and secured at their lower ends, s at 23, to the plate I2. A third finger` 24 i notched, as at, and ,is provided with anA inwardly extending offset 28 guided in' any suit- 4 A movement `or ilexure of the linger 24 in response to the thrust of the spring 26. 'I'he ilngersll and are soproportioned, and the notches 22 and 25 are so spaced, that the notches receive the edges oi" the aperture 9. The spring 26"pejr mits the finger 24 to recede yielding'ly toward the center of the fan, so that the fingers may be thrust up through the aperture 9. The outward bends bly through the aperture .l .and serve as cams to' Similarly of the ngers below thei notches 22 limitv4 the upwardmovement of the supporting assemresponse to the expansion of the spring 26, once the upper portion of the supporting assembly has been thrust up through the aperture 9.

. In use the operator may first position the assembly as shown in Fig. 1, with the notch 2u abutting against the edge of the aperture 9. He then pivots the assembly until it is in the position of Fig. 2. 'I'he spring 26 and the ilexure of the finger 24 permit the securing assembly to` be snapped into the position in which it isshown in Fig. 2, and the spring thereafter keeps Vthe finger 24 spread out in securing position. However, ify the operator wishes to remove the assembly, all he has to do is to thrust inwardly against the assembly, which causes the notches of the arms 2| to clear the edge'of the aperture 9. He can thentilt the assembly down into the position in which it is shown in Fig. -1 and withdraw it through the passage I8. It will be understood that any changes in detail may be made. Illustrated for example, in Figs. 4

and following, is a form in which fingers 40 are provided, with a loop 40a, which interlocks with the free end 41a of the opposite finger 4I, which 'has a bottom loop, as at 42, and performs the function of the spring 26 of Fig. 2. All three fingers have securing notches, as at 43. Ineach case the parts are so proportioned that. -whe'n the device or assembly is sprung into place, the fan shaft l5 is vertically aligned with the 'desired point in the bottom of the pot I, preferably the center thereof.

With the fan vanes located in the space between the drum bottom 8 and the bottom of the pot I, air is delivered radially outwardly and may rise in the space between the side wall of the,

pot I and the drum wall 6, thus providing the necessary air supply for combustion going on within the pot.

It will be understood that any suitable means for energizing the motor circuit may be employed, not herein shown. The motor maybe operated either continuously or intermittently, depending upon the circuit used and the need of the particular installation. Any suitable pilot .means may be employed for the pot, including a pilot nozzle 50, which serves also as means for delivering fuel at all stages of the re. 5| is a liquid fuel line extending to a source of liquid fuel not herein shown. It will be understood that it may be controlled by any suitable valve means not herein shown.

- It -will be realized that, whereas we have described and illustrated a practical and operative device, nevertheless many changes may be made in the size, shape, number and disposition of parts without departing from the spirit of the invention. We therefore wish our description and drawings to be taken as in a broad sense illustrative or diagrammatic, rather than as limiting us to our precise showing.

It will be understood, for example, that, where-I as it may be advantageous to position the booster unit adjacent or in vertical alignment with the bottom of the pot, it is also practical to locate it elsewhere, for example at the inlet of or along the length of the passage I0.

Referring tothe vform of Figs. 7 and 8, 8 indicates any suitable drum bottom or skirt, or the like, with an aperture of the proper size 9'.- The.

motor and fan unit is identical with that shown in the other figures except that it employs a plurality of guard wires 15, which need n'ot have a spring function and which have an inwardly offset portion 16 terminating in an upward projection 11, which may be connectedY by a member 18 to provide a firm structure. In the other forms the fan guard wires themselves serve as locking means for locking the unit in place. In the form 5 of Figs. 7 and 8, however, we illustrate a bale 80 of wire or the like, which is pivoted as at 8l on Ithe plate 8 and which may be. swung into the latching positionnshown in full line in Fig. 8, at which time it engages a notch 83 in a latch element or cam 82 on the housing I3. The bale is preferably of spring 'stock and it is stretched fby the cam portion of the member 82 sufficiently to have a'rm locking action when it seats in the notch 83. It is prevented from traveling over lf, center by the outward or downward projection 84.

The use and operation of our invention 'are as We provide a booster unit 'in which a motor fan, fan guard and unit securing means are associated in 'such fashion that the unit may readily be applied or removed. Where it is desired to locate the unit adjacent the pot, it may be made .of such size in relation to the duct i0, or the diameter of the duct I0 is so proportioned, that 25, the unit may readily be thrust inwardly through the duct and snapped into place, as shown in Fig. l. A wire clip is eective to secure the unit in -position in any aperture,4such as the aperture in the partition 8. Y While we illustrate the unit as clipped in place in the central aperture of the partition 8, it will be understood, of course, that the device may be located at any point along the air duct i0 and may, for example, be conveniently clipped into position at the inlet end of the duct I0.

One of the purposes of the wire structure is the provision of a fan guard. The fan is of necessity a rather delicate part or instrument and must be protected. It will be observed that the fan guard is built on a radius rather than being on a. vertical plane. In other words, the fan structure extends upwardly about the fan and then inwardly toward the axis of rotation of the fan at a level above the fan. This protects the fan from being damaged in the insertion of the un'it and in practice the unit can be in a sense rolled into position without causing the delicate vanes of the fan to contact the edges ofthe aperture through which the fan is inserted.

It will be understood that in all forms of the device herein shown, the fan and motor unit can be mounted in any suitable abutment member or plate, which may for convenience be aligned with the bottom of the pot, but need not be so. In

located'at any point below or adjacent the pot or in the line of delivery of air to the pot is suffin cient. In the form of Figs. 1 to 6, the wire fan 'guards serve also as locking means for locking the motor and fan unit inv position. In the forms of Figs. 7 and 8 we illustrate a mechanism in which the bale may. be mounted on the air skirt or apertured plate, and the wire fan guards 15 serve v merely as centering and positioning means and` other words, any suitable air skirt or member f in which the unit is positioned.

partition,including a plurality of notched fingers upwardly extending from said plate about said fan, one or more of said ngers being yieldingly movable inwardly towardv the other fingers, wherebyl to permit the insertion of the supporting assembly in said'aperture, the vanes of said fan being located above the notches of said fingers whereby, when the assembly is in position, the motor is located at one side o'f the supporting partition and the fan on the other.

2. In abooster motor and fan assembly, a supporting plate, a motor housing, a motor mounted on said supporting plate, a fan shaftA extending upwardly from said motor housing and plate, a

fan on said fan shaft, and a supporting assembly lng limitingfoifsets adapted' removably to engage the edges of any aperture inwhich theunit is 3. In a booster fan unit'for burners and means for removably supporting it in an aperture, a fan motor, a fan shaft extending from said motor, a fan on said shaft, and a combined fan guard and supporting means for the unit, including a plurality of guard members upwardly extending from said` motor about said fan, the upper ends of said Vguard members extending generally radially inwardly toward the axis of the fari, said guard members having locking. o'sets adapted removably to engage the edges of any aperture in which the unit is positioned, said members being inwardly exible, and means for urging them outwardly and for thereby maintaining said locking offsets in locking contact with the edges of any aperture in which the unit is positioned. f

rality of guard members upwardly extending from said motor about said fan, said guard memh Ybers having locking osets adapted removably to engage the edges .of any aperture in which the unit is positioned, said members being inwardly flexible, and means for urging them outwardly' and for thereby maintaining said locking offsets in locking contact with the edges of any aperture 5. In a booster fan unit for burner and means for removably supporting if; in an aperture, afan motor, a fan shaft extending from said motor, a

f an on said shaft, a combined fanguard Vand 60 centering means for `the unit, including a plurality of guardmembers extending from said motor and about said fan, said guard members having limiting offsets adapted removably to engage f the' edges of any aperture in which the 'unit is positioned, and vmeans vfor locking the unit inl wnfan"ori'sa. id shaft, a combined fan guard and centering meanssfor lthe unit, including'a plurality of guard members extendingv from said motor and about said fan, said guard members havpositioned, and means for locking the unit in po'- sition with said limiting offsets in engagement with the edges of said aperture, including a bale mounted adjacent saidaperture.

'L In a motor and fan assembly unit and means for removably supporting it in an aperture, a

support, a motor mounted onsaid support, a, fan

shaft'extending'ffrom said motor, f an vanes on said fan shaft, and securing means for-securing said unit in an aperture, with the `fan vanes located on the opposite -side of said aperture from the motor support, which includes securing elements extending outwardly from said support and about saidfan shaft and fan vanes, said elements having positioning portions adapted removably to engage the edges ofsuchan aperture, and x the relationship between the motor and fan unitand the v walls of the aperture.

8. In a motor and fan assembly unit and means for removably supporting it in .an aperture, a

support, a motor mounted on said support, a fan shaft extending from said motor,- .fan'vanes on said fan shaft, and securing means' for securing said unit in an aperture, with. the fan lvanes located on ,the opposite sideI of said aperture from the motor support, which includessecuring ele- Y supporting means for the unit, including a pluon said fan shaft, and securing means for securmotor.

ments extending outwardly from said support and about said fan shaft and fan. vanes, said elements having positioning portions adapted removably to engage the edges of such anaperture, and fix the relationship between the motor and fan unit and the walls of the aperture, said positioning portions including oifsets in said elements;

9. In a, motor and fan-assembly unit and means for removably supporting it in an aperture, a

support, a motor mounted on said support, a fan shaft extending from said motor, fan vanes on said fan shaft, and securing means for securing said unit in an aperture, with'the fan vanes lo- 10. In a motor and fan assembly unit and means for removably supporting it in an aperture, a support, a motor mounted on said support, afan shaft extending from said motor, fan vanes ing saidl unit in an aperture, with the fan vanes located on the opposite side ofsaid aperture from the motor support, which includes securing elements extending outwardly from said support and about said fan shaft and fan vanes, said elee ments having positioning portions adapted removably to engagethe edges of such an aperture,

and x the relationship between the motor and fan unit and thewalls of the aperture, said positioning portions including notches in said elements, said elements being in yielding association with each other whereby said notches are normally yieldingly thrust against the edges ofthe aperture.

" 11. In a motor-and fanassembly unitarid' means for removablysupporting it in an u aperture, a support, a motor mounted on said support, a fan shaft extending from said motor, fanvanes on said fan shaft, and securing means for securing said unit in an aperture, with the fan vanes located on the opposite side of said aperture from the motor support, which includes securing elements extending outwardly from said support and about said vfan shaft and fan vanes, said elements having positioning portions adapted removably to engage the edges of such an aperture, and fix the relationship between the motor and fan unit and the walls of the aperture, said elements including portions adapted to surround and serve as guard' means for the fan vanes. f

12. In a .motor and fan assembly unit and means for removably supporting it in an aperture, a support, a motor mounted on said support, a fan shaft extending from said motor, fan vanes on said fan shaft. and securing means for securing said unit in an aperture, with the fan vanes located on the opposite side of said aperture from the motor support, which includes securing elements extending. outwardly' from said support and about said fan shaft and fan vanes, said elements having positioning portions adapted re movably to engage the edges of such an aperture, and fix the relationship between the motor I with the walls of said aperture.

a fan shaft extending from said motor, fan vanesY on said fan shaft, and securing means for securing said unit in an aperture, with the fan vanes located on the vopposite side of said aperture from the motor support, which includes securing elements extending outwardiy from said support and about said fan shaft and fan vanes, said elements having positioning portions adapted re.

movably to engagethe edges of such an aperture, and fix the relationship between the motor and fan unit and the walls of the aperture, said elements including a plurailty of wires secured at one end in relation to the motor and secured at their opposite ends to each other.

JAIWES L. BREESE. BRUCE HAYTER. STANLEY PERRY.