US1299762A - Valve. - Google Patents

Description

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VALVE. APPLICATION man APR. s, 191s. Patented Apr. 8, 1919 z SHEETS-SHEET {wen/$624.? @www Tlveom S. T. `\ULSO\LV `MUIS.

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Patented Apr. 8, 1919.

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SVEN fr. NELSON', or CHICAGO, ILLINOIS, ASs'IGNoR To SULLIVAN MACHINERY p CCMPANY. oFfBosToN, MASSACHUSETTS, A CoaPoRATioN oir-MASSACHUSETTS,

` VALVE.

drawings, is a specification, like characters on the drawings representing likeI parts.

This invention relates toimprovements in valves and more particularly to automatically acting intake and discharge valves tor 'aseous fluid compressors. The objects and features of the invention will best be understood from the following description, taken in connection with the accompanying drawings, of a portion of a compressor equipped with intake and discharge valves embodying one form of in v invention and selected` tor the purpose of illustration, it being understood that the invention in its true scope is definitely set forth by the claims.

Figure 1 is a central longitudinal section of a portion of a. compressor provided with intake and discharge valves embodying in v invention Fig. a`section'al view on line ot Fig. 1, looking toward the left;

Fig. 3 is a sectional view on line 3-3 ot Fig. 1, looking towardthe right;

Fig. 4 is an elevation of Ihe discharge. valve;

Fig. 5 is an cle 'ation' of the intake valve;

` Fig. G is an elevation of the discharge valve viewed from the righthand side ot Fig. 4;

Fig. 7 is an elevation of -a guard or stop for the intake valve;

Fig. S is an elevation of the same vieii'ed from the right hand Side of Fig. 7;

Fig. 9 a -moditied' form ot' discharge valve Fig'. 10 is a modified torni of intake valve. Referring to Figs. 1 and 2 of the drawings, I have there shown a grscous fluid coinpressoiembodying one form of my invention selected for illustration, said compressor including a cylinder 2, within which a piston 4 works in theusual ina-iiner. The Icylinder head (lis herein .shown as comprising a main head 8 and a` supplementall head 10, secured to the eylinderbya plurality ot studs 12. This construction hasbeen selected by reason of greater convenience of.

manufacture and assembly it the parts.

Specification of Letters Patent.

. Application filed April 8, 1915. Serial No. 20,077.

The supplemental head l() isherein Shown' as chainbercd and partitioned to forni ansff intake chamber 14 and a discharge chamber municating directly with a discharge. pas-.i sage22 through one or more ports :24. Pret erably, the supplemental'cylinder head 1.()-

will be provided with cover plates 2G and 28 for chambers 14 and 1G, respectively, thus rendering they intake and discharge valves` readily accessible Jfor the purpose ot' ins'pec- 2 tion, without necessitating the removal ot the entire head. Herein, the'. coverplate 2G is preferably secured inplace by a series of screws 30, andthe cover .platelb b v a series ot screws 32. l

f The intake. and discharge valves may be, and herein. are, quite similar to each other;

but they differ in certain inspects,y owing.

principally to the'ditference'in requirement which necessitates variationsiin their valve' seat and in their nioiintiing.` f

As shown in Figs. luaiid 5, the intake.

valve includes a body 34, interposed between a valve seat 36 and a guard or stop 38,A said guard or stop serving to limit the opening movement of the valve.- In the form herein shown, the valve seat 3G is-in the for-m of'a plate ot generally segmental shape, secured receive the. screws 40, and within'its mar- A.

ginal portion the )late is-provided with a pliiralitv of slot-s Fig 5) indicated by the reference charactei- 's 44, 45, 4G, 48, 50, 52,54,

56, 5S, (it), (S2. (t4 and forming tongues 66./ (3S, .70, 72, 74, 7G, 78, 80, 82, 84, 8G.

Said

tongues are connected at their free ends by a band 8S, said tongues themselves thus constituting bands extending from said marginal Aportion` 42 to said connecting band 88.

In the intake valve, the marginal portion 42 l I extends all around thetongu'e'sor bands 66,

(5,8, 86, but that fportion of said marginal portion 42 which. is adjacent the A110` Patented Apr. s, i919. e

Thissheet or plate is herein provided connecting band SS is separated from the latter by a slot 90, connected at either end to the slots 41. and 6-1, respectively.

The tongues or bands constitute elastic valves which overlie and normally close Silita'bly formed apertures in the valve seat 36. If desired, there may be a plurality of apertures foreach tongue or band, as hereinafter described in connection with the discharge valve; but for the purpose of illustrating two desirable forms of valve seats, the valveseat 36 is herein shown as being provided such connection otl the with a plurality of apertures. 92. 94, 96, 98, 100` 101, 102, 10-l. 106, 168. and 110, generally corresponding' with the tongues or bands otl the valve bod' as to shape and location. though somewhat smaller than said tongues or hands in order that the marginal portions ot' the latter may normally rest againstthe valve-seat about the margins of said apertures.

It is tovbe noted that as the tongues or bands 66, 68, L H6. are all connected at one end to the rectilinear part of the marginal portion l2 of the 'alve body and at their other ends to the connecting` hand SS. said tongues. or bands will all buckle or flex together about saidrectilinear portion ot' the marginal portion 12. that is to say, by joining the free ends of the tongues a single plate or valve is formed. having unbroken portions to cover the passages ,or openings in the valve lseat and intermediate broken or removed portions. alld adapted to buckle or fiex as a whole about the rectilinear part of the marginal portion 42 ot' the valvebody. The construction has this advantage, among others. that. the tongues or bands 66. 6H. 7() S6 heilig' connected at both ends,

there. would be no loose or broken parts.

should any of said tongues or bands break. '.lhis might be ot' considerable importance, particularly in the ease of large compressors. The guard or stop 3S. Fig. 7, lnay be and herein is identically outlined with the valve body and comprises a marginal portion 112 suitably perforated to receive the screws 40, and a plurality of slots 114, 116, 11S, 120. 122, 12J., 126, 12s, 1:30, 132, 134. and 136, forming tongues or bands 13S, 140, 142, 14:4, 116, 148, 150,."152, 154. 156 and 15S, corresponding to zthe tongues or bands of the valve body just described and connected at their free ends by a connecting band 166, similar to the band 88 of the free, ends of the tongues 0r bands of said guardis not essential.

The, valve guard differs. however, from the valve body described, in that it is relatively thick and inflexible', ,in order that its tongues or bands may act as stops for the tongues or bandsof the valve body. It is to be noted also that the tongues of the guard or stop are bent. or curved out of the plane 'alve body, but` of the marginal portion of the guard, in order to permit the necessary opening movement of the tongues or bands of the valve body. This construction is illustrated in detail in Fig. 7.

Owing to the described form and arrangement of the valve, a relatively large ei'ective area of the intake is assured.

In order to provide for the passage of the gaseous fluid from the intake valve into the c vjlindeuitself, the main head S is appropriately apertured, and preferably is provided with a multiplicity of simili perforations 162, so Athat in case'of breakage in the, valve the pieces will not become lodged in the end ot' the cylinder and cause damage. The main head S is provided with a recess 164 into which the tongues or bands of the guard or stop project, and it' the free ends of said bands are connected by a connecting band, such as 160 above referred to, the main head will of course be provided with a corrcspondingly shaped recess to receive said band.

Referring now more. particularly to Fig. l. the discharge valve. in the form illustrated in said tigure, consists preferably of a plate of relatively thin, flexible. and preferably elastic sheet material, which in practice, as inthe casef'of the intake valve, is made of tempered spring steel. This plate. is pro vided with slots 166, 16S, 170, 172, 171, 176 178. 180. 182 and 184, thus forming a plurality of tongues 186. 18S, 190, 192, 194, 196. 198. 200. 202 20-1, and 206, said tongues pro- `iectiug from a marginal portion 20S and being joined together at their otherends h v a connecting band 210. 'lhe marginal portion 20S is perforated to receive a plurality of screws 212. This valve. body is herein interposed between a valve Seat 21-1, constituting a part ofthe main head S. and a stop or guard 216. The valve body and the guard are secured in place b v the screws 212, in coperation with a clamping bar 211 The va'lve seat 214 is provided with aprpropriate apertures. which the tongues or bands 186, 18S 206, overlie, and in this instancel there is provided-a vplurality of perforations for each ot' Said tongues or bands. This construction is preferredto that of the slots described in connection with the intake.

valve. for the reason that, where each Yalve.

port is made up of'a number of small perforations, a better support is provided for the alve tongues or bands and there is less likelihood of breakage than where each tongue or band is supported only at its margin on the valve seat. In the. construction shown there are several rows of such perfor-ations, herein designated by the reference characters 220. 222, 221, 22e, 22s, 230, 231, 23e, 23s', and 240, one series or row 'for each valve tongue.

-lt will be seen that in the case of the portions separated by intermediate broken ont or removed portions; a valve seat provided with apertures which said unbroken portions overlie and normally close; means to secure said plate in fixed relation to said valvel seat along a single line, the construction and arrangement being such that said plate will buckle or flex as a. whole about said line.

In a valve for permitting the flow ot' fluid in one direction but preventing its flow in the opposite direction, the combination ot an elastic val\' 'bo l v adapted to be flexed by the pressure ofthe fluid and provided with slots forming bands extending from a marginal portion and joined at their other ends and, beingseparated by said slots; a valve seat provided with apertures which said bands over'lie and normally close; and a stop or guard similarly provided with slots forming bands joined at both ends to marginal portions and respectively overlying the bands of the valve-body` the latter being 'Iiiterposed between said seat and said stop.

l. In a valve for permit-ting the tlow of fluid in one direction but preventing its flow in the opposite direction, the combination of an elastic valve-body adapted to be flexed by the pressure of the fluid and provided with slots forming hands extending from a marginal portion and joined at their otherI ends, said bands being separated by said slots and progressively decreasing in length trom one point toanother: a valve .seat provided with apertures which said bauds overlie and normally close: and a stop or guard similarlyprovided with slots torming` bands joined at both ends to marginal portions and respiaftively overlying the bands ot the valve-body` the latter being interposed between said seat and said stop.

5. ln a valve lor permitting the flow ot fluid in one direction but prevt-nting its flow in the. opposite direction. the Combination ot an elastic valve-body adapted to be flexed by the pressure ot the fluid and provided with slots forming bands extending trom a Amarginal portion and joined at than,I other ends. said bands being` separated b v said slots; a valve seatprovided with a plurality ot' series ot' jwrtorations, one series for eaeh band. which said bands overlie and norn'ially close; and a stop or guard similarly provided with slots forming bands joined at both ends to marginal portions and respectively overlying the bands olI the valve-bmly, the latter being interposed between said seat and said stop. Y

6.4 l'n a valve for permitting the flow of fluid in one direction but preventing its flow in` the opposite direction`r 'in combination, an elastic valve-body7 ol generally segmental form adapted to be flexed by thel pressure ot' the fluid and provided with slots forming bands extending` t'rom a marginal portion and joined at their other ends` said 4flow in the opposite,`

,elastic valve-body having tion and provided with slots forming a series bands being separated by said slots; a valve seat provided wit-h aperturesvhieh said bands overlie and normally close; and a stop or guard similarly provided with slots forming bands joined to marginal portions at both ends and respectively overlying` the bands of the valve-body, the latter being interposed between' said seat and said stop.

7. ln a valve for permitting the flow ol' fluid in one direction but prevent-ing its' direction, in combination, an elastic valve-body adapted to be flexed by the pressure of the fluid and provided with slots forming bands extending from a marginal portion and joined at their other ends, said bands being separated by said slots; a valve seat provided with apertures which said bands ovelie and normally close; a stop or guard similarly provided with slots forming bands joined at both ends to marginal portions and respectively overlying the bands of the valve-body, the latter being interposed between said seat and said stop; and an apertured mounting for said val've-body and stop, said mounting being recessed to receive said stop.

S. ln a valve t'or permitting the flow ot' fluid in one direction but preventing its flow in the. opposite direction, in combiinltion` an a marginal porot elastic bands projecting from said marginal portion and joined at their other ends, said bands being entirely surrounded by said marginal portion and being adapted to be flexed by the pressure of5 the tluid; means for securing` said marginal portion; a valve seat provided with apertures which said bands overlie and normally close; and means -for limiting the opening movement o'tl said valve-body bands.

t). As a. new article ot manufacture, a valve-body consistingv of a relatively thin elastic plate ot' generally segmental .form having a marginal portion and a plurality of bands connected at one end to said marginal portion and at the other end to a cur`v viliuear connecting band. i

1t). AS a new article of manufacture, a valve-body consisting ot a relatively thin elastic plate ot' generally segmental form having a marginal portion and provided with a plurality of slots forming a group ot bands entirely7 surrounded by said marginal portion and joined thereto and to a eonneet-ing band.

l. ln a valve for permitting the low of fluid in one direction but preventing its fl0w in the opposite direction` the combination of an elastic valve-body adapted to be flexed by the pressure of the fluid and provided with slots forming bands joined at both ends and separated-by said slots, said bands progres` sively decreasing in length from one point to another; and a valve seat provided with apertures which said Sbands oveilife and no1.'- lnally close.

12. ln a Valve lier permitting tlie tionT of fluid in one direction lont preventing its liew in tlie opposite direction, in combination, an elastic valvebody olf generally segmental forni adapted to be flexed by the 1pressure ot the fluid and provided with slots 'forming bands extending 'frointhe marginal portion of said valve-body and connected at their other ends, said bands being separated by said slots; and a valve Seat provided with apertures which said bands overlie and normally close.

13. ln a valve for permitting;- the liow of fluid in one direction but neventing its flow in the opposite direction, in combination, an elastic valve-bodyliaving; a marginal por-- tion and provided with slots forming a, series of elastic bands projecting from Said inar- `ginal portion and'conneeted at their other ends, said bands being adapted to be flexed in unison oy the pressure of the fluid and being completely surrounded by said niarginal portion; means for securing said man ginal portion; and a Valve seat provided with apertures which said'bands overlie and normally close.

11i. As a new article of manufacture, a Valve-body Aconsisting of a nlativelyv thin elastic plate of generally segmental torni having a plurality of bands projecting from said .marginal portion and joined at their other ends.

15. As a new article of manufacture, a valve-body consisting of a relativelyv thin elastic plate of generally ,segmental form l.. a marginal portion and provided with a nlinrality of slots veri-:ely sai/il plate and oiiniit is pre e jeetinggg from said nn rginal petition end connected to canse tlieni to move together in the oi eration of the valve. 1S. its a new artiele va' ii-body consisting et elastic plate et ei'fll'i' li: fing; 'with a iinral 'versely valve-nodi l elastic plate having; .i niovifled 'with a pini? traneveselif of said l 'projecting' iom said marginal pei connected to canse 'them to nieve, te

operation o" tlie valve. 18. is a new a'tiele oii valve-body eonsieting of a 1. elastic plate timing margine provided wit-li a plurality oit' sl@ J e transvei'se j; oi said `plate and connected to them t1 ino: the operation of tlie valve. in testimer l' naine to tl'iis oit two sneserilail e Hanegem:

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