US1632385A - Compressor - Google Patents

Description

June 14 y 1927., l ,632,385

C. W. VQLLMAN COMPRESSQR Filed Feb. 15, 1922 Fig L, Figa fr@ g,

vii/M lil lli

Patented .lune 14, 1927.

ITD STATES CARL w. voLLMANN, or MONTREAL, QUEBEC, (JA-Nana.

PATENT orF1cl=;.

COMPRESSOR.

Application led February 15, 1922. Serial No. 536,626.

This invention relates to ammonia compressors and compressors for compressing air, carbonio acid gas or any other gaseous fluid requiring compression for manufacturing purposes; while the invention relates more particularly to the type of compressor `n which flat steel springs are employed as sists of the construction, combination and.

particular arrangement vof the parts of thc suction and discharge valves of a compressor of the type defined, as described hereinafter. l

For full comprehension, however, of my invention reference must be had to the a'cuompanying drawings in which similar reference characters indicate the same parts and wherein:

Figure l is an axial sectional view of my improved suction valve with the valvular members indicatediin their open position;

Figure Q is a fragmentary view of the right half ofthe valve with the valvular' members closed;

Figure 3 is a transverse taken on line 3`3 Figure l;

Figure l is a transverse taken on line 4-4 Figure l;

Figure 5 is an axial sectional view of the discharge valve; l

Figure 6 is a fragmentary view showing the right half of the discharge valve with the valvular members closed; l

Figure 7 is a transverse sectional view taken on line 7 7 Figure 5;

Figure S is an axial sectional view taken on line 8-8 Figure 5; and i Figure 9 is an elevation of a front cylinder cover provided with my improved valves.

' The suction valve according to my invention consists of a hollow cylindricalintake memberb, one end of which is closed by a cap o and the opposite end (Z of which is tapered to present a hollow member of substantially truncated conical form with a closed end e, the interior ot' the member forming an in take chamber 1. This intake-member is sectional view section al view mounted in position upon a valve case y with the truncated corneal portion extending into the latter7 the exterior of the member having a shoulder conffstituting a seat adapted to engage the adjacent end of the valve case.

The opposite end of the valve case is as usual with valves of this nature inwardly converged as at it to be seated in the housV ings or seats 7c of the cylinder -cover of the con'ipressor. The truncated conical member d has a series of elongated ports in the form of slots m extending` from its closed end to within a short distance of the point where the conical portion merges into the cylindrical portion. These 'ports m are adapted to effect connnunication between the intake chamber'')1 and the uvalve chamber g1 and are controlled by an equal number of resilient check valves p clamped in place by" blocks o. These blocks are accommodated by an inwardly offset portion n of the intake member. The space provided Vby this inwardly offset portion is such that the surrounding face of the` valve case g fits tightly, over the blocks o and supplements they blocks in their clamping action, thus preventing displacement of the check valve even if their fastening means become loose. These blocks vary in number' according to the size of the compressor', the size illustrated having eight ports and the cone, consequently for convenience, having an octagonal eX- terior in cross section, each facet or side thus produced serving as an external'valve seat t. Each of the blocks o secures one of the check valves in place. The latter are equal in number to the number ofports and each consists of a flat steel spring of slightly greater width than yits port and of sullicient length to completely overlie the full length of the port. Each spring has one end bent at slightly greater4 than a right angle and fitted between one side 0f its block 0 and the portion a andthe face of the cone. These manner of clamping the springs avoids making holes therein or in any way weaken- `blocks are held in place by screws g located ing them. In order to prevent the valvularr springs from being unduly sprung when thrown open by the sucked Huid a series of beds s are cast upon or otherwise fastened to the interior of the valve chamber in juxtaposition with the springs and presenting faces conforming to the contour assumed by the spring when bent to open position.

My improved discharge valve consists of a@ combined cylindrical discharge member and valve Chamber or case t, Athe lower end o i which is seated uponra circular base u, the coniiguration of the latter' being convergedas at e to fit the usual seat on the cylindrical cover. The base hasr-afhollow taper-ed y member fw of substantially wedge form slotted to ,provide-elongated ports Cheelr` vaines in ithel aform of `tlat- `:steel spring val-1' vulanf members ysimilari toK the: valvulari members ,pgare clamped to this base near one end ot the slotsdiy ,clamping bars e.r Thesef` clamping. bars are aceommodated. Ibetweena the foot '2 lot the f cylindrical member. t and 1 the..outeriiiace ofthe wedgermember Thief: hollowewedgedike member is slightly dess u inflengthi than A`the .diameter Iof the vhousingt la, andproj eets from the lbase sa :asutcient distance tol locate lthe contiguous ends `ofi the f ports. im, ini close. communication; with -a fdischarge port 12,v Beds -for supportingthe i; valvularispnings whenthrown open inethe discharge ivalve'are indicated at i9.

The intalrefport is indicated iat 10inFa'rg-n urel and theidfiseharge port-atrlvin Fig uree5.Kv Communication is eitected :between theiintalrememberzb andthedntak'e port 1() through anaperture-.15V yin theiside not -fcylin-i- 'drical i member, bi and communication leffectedbetween,the valive i chamber t fand: i dischangeport 12 by an i outlet ,opening E16. i

Infvoridery to .increase the-effective :closing 5 ofthe values the=clampingfbloclrsio and bars .e `have @the :springs1.countersunlritherein tol rslightly less `.thanwtheifullotliliclrnesszof sueh i springs@ This r countersinlring; also x acts 1 to prevenu displacement of the i, springs.` from their proper:engagingaposition: relatively ito o thefports The flat topgotthe wedgeflilrefmembertfw has a screw-.threadediholeQO to permit azboltz to -i be :screwed .1 intoit! for 1, tlie purposes of:

lifting; the f valves rom= its, case- The-.hollow tapered members flandifia witliltheiin elongated -.ports impart :toi ther valves z the advantage fot thriving-f maximum i y capaeity for the flow .within .valvesnot S'given dimensionsqi y The outletsvalive` is le not` claimed herein.; speeiticallyfas the sameorlns thetsubject-V i matterfof :a separate application Operation,

the large intake port `10 these valvular springs in opening are presented and supported substantiallyparallel to the line of flow as shown by the arrows in this Figure thus offering minimum resistance.` The r valvular members y of the discharge valve are also thrown. open ,to'positions substantially parallel to the line of 'flow and offer minimum resistance, the supports 9 preventing these valvular members from being unduly ,sprungl .These supports for the valvular springs andiithefmanner of attaching-the` springs with theirfatta'ched'ends:'upon the clamp their. clamping devices, increase the= dur-f ability i of 1 thel valves' :and ensure r the more etlicient working vthereotf;I 'while the par-fA ticular Varrangement fot these fvalves "actingif upon the f outside of. *thea lconical Vmember 'fd f' and theoutside ot the wedge-mernber'wl permits the fvalve seats ito *A be readily ma chinedand 1a: perfectly itighti joint tobe f se-.- cured between ieaoh valvular ispringy'and its i seats,V thus,v with. the particularl arrangement of the valve mounting7 securingijmaximum.: eiiieiency :in woperati'on. Another important advantage `=is `that the di reet inwardy and out# ward iowifrom tlie\=suetio1r port y'10 to the ports'zmwand thesport's toithe dischargev' port l12' affords yrelatively ygreater capacityi than can be secured without the use of the hollo'ivi f truncated: conicali` member l and wedgeiw or their equivalents."

Although I have lillustrated and described* the lpreferredlembodimentfot myinvention 10U many changes maybe made in specific detail? design and parti-'cular arrangement 'of '1devices-land the relative 5dimensions thereof withoutdepartingL from the spirit of my: inventions f What fl claimiisasfollows:

1. In a compressor for gaseous"fluid, V an intake memberot"circular cross-section at its upper portion andi. having anl intake-` openingin'itsi'sidefandfits top permanently 11u closed, the member beingjreducedfin 'diams' eter at Iiits'lower portion formingt a shoulder, the lower portion consistingfolia hollowli member of" truncated conical f form" and closed at its truneatedlower end and havingili a surrounding seriesfo'f longitudi'nal -p'o'rtsj radiallyopening, avvalve' case equal indi'amL eter to the upper liortioniot` the intake' member 4and seated'against the shoulder and en'- closing the truncatedconicalA member, a plu 120 fralityV ot separate vand `distinct checlrvalves equal in number tothey number of the open# Y ings and of uniform widtlr throughout their length and controlling the ports7 eaclrvalve" independently7 controlling #only one ot the i125 portsyand lmeans'tor securingrthe:valves at the ends 'of the ports Ltromnvhi'chi thefitlowl passes therethrough and permitting them to open in the direction ofthe tlow.A

V2. Anintake-member for a gas com- 130 pressor, such as claimed in claim 1, the valves in place, means for fastening the means for securing the valves whereof in blocks and the Valve case locking fastening place consisting of the truncated conical means and clamping blocks against dis- 10 member being constructed and arranged to placement. :form an encircling space Within the valve In testimony whereof I llave signed my case, ay circumferential series of segmental name to Athis specication.

blocks 'within the space and clamping the y CARL l/V. VOLLMANN.

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