US1756060A - Compressor valve - Google Patents

Description

-April- Z9, 1930. A. s'. HAwKs I COMPRESSOR VALVE Filed July 7, 1925 'Patented Apr. 29, 1930 UTED STATES PATENTv HCE ARTHUR S. HAWKS, OF ST. LOUIS, MSSOURE, SSLG-NOR TO BUSC-SULZER BROS.- DIESEL ENGINE COMPANY, F ST. LOUIS,` MISSOURI, A CORPORATION OF MIS- SOURI COMPRESSOR VALVE Application filed J'uly. 7,

The invention relates to plate valves for air or gas compressors and consists in the structurel and organization of the cap and seat members thereof and the means and manner of confining the valve plates therein, as

below described.

The preferred form of the invention is illustrated in the drawings, wherein Figure l is a longitudinal section through the assembled valve structure.

Figure 2, a plan of the inner face of the cap member of said structure.

Figure 3, a similar Aview of the seat member thereof.

Figure il, a partial plan of the seat member with the valve plates in 'position thereon; and

Figure 5, a cross section in the plane of one of the port slots.y

`Thevalve comprises an oblong, or rectanguiar, sea-t member l having its outer face marked 2, shaped flat or otherwise formed to Y be clamped or-connected in any suitable way to the port opening ofv an air compressor or the like. The cap member 3 is bolted or otherwise clamped to the inner face of the seat member 1 forming therewith a valve chamber for the valve plates. The outer face l of the cap member can also be connected to the port opening of a compressor, when the valve is to be used as the inlet instead of the outlet of the compressor. The valve plates 5 are rectangular, flexible steel plates preferably of about the dimensions indicated although they may be thinner than shown.

The seat member l is formed with a plurality of port slots 6 with intermediate parallel port bars 7, and its inner face is dressed off perfectly flat, except for a longitudinal shallow recess 8,which is parallel with the row of port slots but spaced slightly from I them. |This flat inner face of the seat member l is adapted to form a tight joint with the cap member, and those parts of said face which immediately surround the port slots I? constitute the individual valve seats for the valve plates 5, against which the latter are adapted to close to stop flow of fluid. The seat member l is also drilled with two rows of holes marked 9 and l0 respectively, each 5@ hole being in line with one of the port bars 1925. Serial N0. 41,2140.

.7 at opposite ends thereof and one row of holes l0 being located in the shallow recess 8.

Round pins ll are driven into these holes and frictionally retained therein and the tops of all the-pins are dressed oil' to a common plane as indicated. These pins are the separators and guides for the valve plates, keeping them from lateral or edgewise displacement.

The cap member 3 is formed with a series of flowl slots l2 with intermediate parallel backstop bars 13 which register with the centers of the port slots 6 when the two members are clamped together. rlheir purpose is to limit the movement of the valve plates 5, and form a support for them in their open positions, which is indicated in Figs. l and 5. The inner face of the cap member is dressed off flat to fit the seat member around its periphery, and its interior part is formed as a flat bottomed recess 14 of a depth about equal to the projection of the spacer pins 1l from the plane of the valve seats. This recess constitutes a. shallow valve chamber in which the valve plates operate.

The cap-member is further provided with a longitudinal shallower recess l5, the function of which is to contain the ends of the valve plates. This plate-holding recess is only slightly deeper than the thickness of the valve plates themselves, so that when the latter are in position, as illustrated in Fig. 5, their ends which are in the recess will be loosely confined therein. AThe major part of each plate will lie over and be adapted to close its corresponding port slot 6 and a part of the length of each plate, between its confined end and its slot-closing portion and substantially coinciding with the location of the recess 8, is available to accommodate the flexing of the plate from its closed to its open position, in which it rests flat against its back-stop bar.

The clearance recess 8 accommodates any reverse llexure of the valve plates and allows them perfect freedom to lit tightly on their seats.

lt will be seen that the width of the spacer pins ll is approximately equal to the separation between adjacent valve plates and the latter are thus kept incentralized registration with their respective port slots. They are retained against en-dvvise displacement by the rlongitudinal Walls of the valve chanc-` ber recess. Obviously the pins 11 could be supported in either valve member and obviv ously also the valvermember recess 14 could be formed in either.

` the slots and bars of one series being offset Y Claim: f Y

In a platevalve, the combination offseat andy 'capmembers clamped one to the other and each having a series of slots and bars,

in relation to the slots and bars ofthe other series, a flat depression-in the inner facev of one of said members iforming a valve cham ber Wall parallel with the inner face `o the second member, a plurality of independent valve plates in said chamber one for each ofthe slots of one of said series7 means for. i yiocating the individual plates' With reference to the slots andbars, a shallovvrecess for receiving and loosely confining said plates at one end thereof, and a longitudinal recess the inner face ofsaid second member intermediate said shallow receiving recess and the yslots* to accommodate flexing of the plates adjacent the conned ends thereof.

In testimony whereof,y I have signed this speciication.

i v ARTHUR S. HAWKS.

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