US2630056A

US2630056A - Exhauster mechanism

Info

Publication number: US2630056A
Application number: US43909A
Authority: US
Inventors: Glascock Harry
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-08-12
Filing date: 1948-08-12
Publication date: 1953-03-03
Anticipated expiration: 1970-03-03

Description

x 0., m w o 6 n r T 2 mcd/nh s M L Q, l y V. M8 l QB Kw, P cm1 A 0H g ARQ @u LEu 5 ao n GWA J u 7. 29m Hmm a we A, am e n 6 llmn/lumn u nd 5.., a, 5 4*, 4 -4 .52 3 2 M W w 5 n f am .Y ya 4u 1, 5 j 3 0 .L Lm M on M J Patented Mar. 3, 1953 U-Nirsn i'Pix-r.eN-'r OFFICE .FThis invention rrelatesz'to fan 'orfblower zdnstallations, and more particularly'lto devioesof this' `character which `are .'adapted. tol `exhaust un- Wanted air.

It is onefobject'of this inventioneto'.provide` an' exhaust unit which is readily adaptable' tofexist ing structures without material alterations; and which is easily assembled and disassembled fwith out resorting' to special tools or theilike.

It is anothero'bject'of this'invention toffpro' vide' an exhaust unit entirely complete in` itself, and which mayv thus'beinstalled without requiring supplemental structures `or mechanisms.

The operationof ordinary exhaust mechanisms adapted for ceiling usehas been characterized by high velocity verticali-drafts "which create airtur'- bulence and which donot directlyxprovideifor a resultant movement or an exhaust of air from non-adjacent areas. in the. room... .It is accordingly a furtherobject of this invention to provide an. i improved exhauster i iunitrf-` 'which-P` `obviates these diiiiculties by exhaustingtfair-evenlyrand eiciently from allhorizontal directions at the ceiling level, thereby continually exhausting. the most contaminated air.

This invention-possesses many yother advantages, and has other objects'whichmay `bemade more clearly apparentrfrom a"considera.tionof one embodiment ofthe invention.`A :For this .purpose there is shown aform inl .th1drawingsac-.- companying andV forming part fof. thexpresent specification. 'IheA form will nowbe described in detail illustrating the general principlesoflthe invention; but it is'to"be"understood that" this detailed description is notltobettaken in a limiting sense since the scope,.of.this invention.- is best defined, by the appended claims.

Referringfto the drawings:

Figure 1 is a vertical elevation, partly in section, showing the exhauster unit in assembled position;

Fig. 2 is a plan view, with the dome defiector partly broken away;

Fig. 3 is an expanded pictorial view illustrating the cooperation and mode of assembly of the component parts of the structure;

Fig. 4 is a sectional view on an enlarged scale taken along the plane 4-4 of Fig. 1; and

Fig. 5 is a vertical elevation, partly in section, similar to Fig. 1, but showing a modified adaptation of the eXhauster unit to a ceiling.

A mounting base it is adapted to be secured over a hood I I, which forms the mouth of an air duct I2. This base IU is made of plywood or other suitable material and is secured to the ceil- 2 ingr :I3V by#appropriate` Vfastening means (not shown) to be either `iiush with the ceiling I3 or overlapping slightly as illustrated in Fig. 1. In the form illustrated in- Fig. 5, the air duct `I2 isv shown extending to the ceiling I3. In this instanceAv lthe entire structure is mounted beneath the ceiling I3. The mounting `base I0 is here mountedl on a frame 5U, which frameis substantially equivalent in function to the hood II.

' 'The mounting base I0 is provided with a circularropening I4i.through which part of, the blowerassembly I5 passes. This'assembly I5` includes anlouter'cylindrical shell or housing I5. The housing I5 provides an inlet end 54 and outlet end 55. for the passage of air through .the

y blower assembly I5. The'blower housing I5' is provided with a. shoulder. I6 .which abutsthe mounting structure "I0 'adjacent the opening I4 (see Fig; 4).

.In order to secureV the assembly to.. the structur'eIl), brackets "I1 areperipherally mounted on the housing I5 adjacent vthe. shoulder I6 as by bolts1l8. These brackets .have apertured ears contacting the mountingstructure ,I0. Passing through `each of kthese apertured ears are threaded Shanks 5I .of a knurledthumb screw I9; these Shanks. 5I, extendinto the .basel D and threadedly engage ,the nut 52, which isappropriat'ely provided against rotation in. a.recess.,53oi the ..base.|0.

.;Electric power is .suppliedtc the. blower assembly I5 .through the iiexible conduit .2li (as for examplc,. armored .ca-ble) appropriately brought into.theconineev of the. hood` I-I ofFig. l. or the frame' ofFig. 5; `the.junctiongboxI .receives the conduit 2.6. and. houses the mechanism which serves optionallyto connect the blower assembly lead' 22 to theconduitfZ .in themanner bereinafter` described.

The junction box 2l is mounted on the mounting 'base I0 and is provided with a cover plate 23. A conventional type plug 24 having prongs 25 is secured to the lead 22, these prongs being detachalbly received in the socket 26. The pull chain or cord 2'I operates the circuit controller 28 for optionally -controlling the electrical connection to the assembly I5. The circuit controllerl may be a standard type toggle switch having a. stem tiltable by operation of the chain or cord 21. A pilot light 29 is mounted on the cover plate 23 and is so connected in the circuit that it will glow when the switch 28 has been operated to establish an electrical connection between the conduit 2U and the socket 26. The pilot light 29 thus serves to indicate when the blower is in operation. An

air deiiector, in the form of a dome shaped structure 3D, made of thin material, is hollow and is adapted substantially to surround the end portion of the blower housing (I5'), the concave portion of the deflector 30 facing the inlet end 54 of the housing I5' and spaced therefrom. For the purpose of mounting the dome 3B adjacent the inlet end 54 of the housing I5', a plurality of spring fingers 3! are attached to the inner hollow portion of the dome 36. These spring fingers are adapted resiliently to engage an annular lip or flange 32 on the blower assembly housing I5', thus holding the donne 39 firmly in place; the spring fingers 3l can be released from the ange 32 upon the exertion of a slight outward pressure on one of the spring iingers 3| for purposes of disassembly for cleaning, repair, or replacement. 'I'he spring fingers 3l can be caused to engage the ange 32 upon the exertion of a small upward force on the dome 36.

The annular lip portion 33 of the dome 30 is of greater diameter than the diameter yof the blower housing I5'; thus when the blower assembly I5 is operative, air flows horizontally at the ceiling level from all directions over the lip 33 into the hollow interior of the dome 35, and thence upwardly through the blower assembly I5 and the air duct I2, which path is clearly indicated byV the arrows of Figs. 1 and 2. The dome 3E! thus confines the air so that it enters from a direction transverse to the axis of -the blower assembly I5, thereby preventing high velocity drafts and pre-- venting turbulence in the surrounding air by guiding the iiow oi air for smooth and eflicient exhaust at the ceiling level, the level at which heat, smoke and grease are most dense. The dome 39 also provides for the collection of dust, or other debris that may fall from the blower assembly I5 or from the air duct I2, thereby preventing contamination of objects in the space below.

The exliauster unit as described permits ready replacement of the various parts. Thus, for instance, the blower assembly may be removed as a unit without disturbing any permanent electrical connections. The plug 24 may be detached from the Isocket 26, and the entire housing removed after loosening the knuiled thumb screws II. The ow assembly unit may thus be serviced and/or replaced with a minimum of difficulty.

The inventor claims:

1. In an exhauster mechanism: an apertured support; an electrically operated blower assembly comprising a blower and a tubular housing member passing through the aperture in the support; said housing member having an end edge; a hollow dome-like deiiector member having an outer edge; the concave side of said hollow member being disposed toward the edge of the housing member, and the edge of the deflector member being .4 larger in diameter than the edge of the housing member; and means mounting said delector on said housing so that said deflector substantially completely overlies said housing member to dene a radial air flow path to said blower, comprising: a flange on one edge directed toward the other edge, and spring fingers mounted on said other edge for detachably engaging said flange.

2. In an exhauster mechanism: a support having an edge defining an aperture; an electrically operated blower assembly comprising a blower and a tubular housing member passing through the aperture in the support; said housing member having a shoulder intermediate its length contacting one side of the support at said aperture dening edge; a plurality of angularly spaced brackets carried by the housing member for holding the housing member to the support on that side of the support that is next to the shoulder; and a deflector member detachably mounted on that extremity of the housing which is on the said side of the support.

3. In an exhauster mechanism; an apertured support; an electrically operated blower assembly comprising a blower and a tubular housing member passing through the aperture in the support; said housing member having a shoulder intermediate its length contacting one side of the support; a plurality of angularly spaced brackets carried by the housing member for holding the housing member to the support on that side of the support that is next'to the shoulder; a hollow dome-like reector member having its concave side directed toward the end of the housing member; said end having a ange; and spring fingers mounted on the edge of the delector member for detachably gripping said ange.

. .v HARRY GLASCOCK.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 703,897 Cooksey July 1, 1902 1,767,988 Knapp June 24, 1930 2,048,985 Akester July 28, 1936 2,049,856 Mueller Aug. 4, 1936 2,134,142 Orear Oct. 25, 1938 2,157,609 Hopkins May 9, 1939 2,225,349 Morse Dec. 17, 1940 2,232,225 Grant, Jr Feb. 18, 1941 2,278,581 Dexter Apr. 7, 1942 l FOREIGN PATENTS Number Country Date 367,051 Germany Jan. 16, 1923 375,862 vGreat Britain July 4, 1932