US1927617A - Piston engine or piston pump - Google Patents

Piston engine or piston pump Download PDF

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US1927617A
US1927617A US506926A US50692631A US1927617A US 1927617 A US1927617 A US 1927617A US 506926 A US506926 A US 506926A US 50692631 A US50692631 A US 50692631A US 1927617 A US1927617 A US 1927617A
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piston
casing
diaphragm
wall
pump
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US506926A
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Schmidt Rudolf
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/02—Diaphragms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2142—Pitmans and connecting rods
    • Y10T74/2144—Yieldable

Definitions

  • This invention relates to piston engines (piston stretching of the base of the corrugations and pumps) having a casing, provided with an inlet inclining the latter. From these strains can be 5 valve and an outlet valve and a piston reciprofound by theory the shape of the corrugations 6 cating within the said casing.
  • the object of for the smallest tension and at the greatest bendthe invention is the arrangement of an annular ing of the lamination. Annular laminations elastic diaphragm of undulated sheet metal, constructed in this way allow comparatively long clamped at its inner circumference to the outer strokes from A to 1 centimetre even in case'ot wall of the piston and at its outer circumfera. very small width of the annulus (in a prac- 6 ence to the inner wall of the casing. tical construction for instance 40 millimetres).
  • FIGs. 4a-4g show various forms of the diaillustrated by way of example on the accomphragm. panying sheet of drawing in which Figs. 1 and 2 The diaphragm illustrated by Fig. 4a is formed.
  • Fig. 3 is a detail view and Figs. the maximum M between the inner diameter d:- 4a to 4g show some constructions of the diaand'the middle diameter dm nearer to the latter phragm. and gradually decreasing to zero towards the The piston 1 reciprocating in. the casing inner diameter d; and towards the outer diam- 7 2, of the engine forms a working chamber 3 eter do. of the diaphragm ring. which is provided with an inlet valve 3 and an The diaphragm illustrated by Fig.
  • FIG. 4b is formed outlet valve 3.
  • the piston is packed by a with ring shaped corrugations and with a wavy diaphragm 4 with respect to the parts 2 and 5 line as cross section, with amplitudes, having the of the casing.
  • a crank mechanism comprismaximum M between the inner and the middle 3 ing a piston rod 6, a springy connecting rod '7 diameter nearer to the latter and decreasing little provided at its end with the crank-pin hearing or not towards the outer diameter. 8, serves for driving the reciprocating piston 1. .
  • the flywheel 10 is fixed to the crank-shaft 9 with ring shaped corrugations and with a wavy and carries a rubber-ring 11, which co-operates line as cross section, with amplitudes, having the 8 as a friction wheel with a friction roller 12, maximum in the middle diameter and gradually mounted on the shaft of a driving motor 13, decreasing to zero towards the inner and tohinged at 14 to the casing, and pressed down wards the outer diameter of the diaphragm ring.
  • the diaphragm illustrated by Fig. 4d is formed
  • the common diaphragm pumps are adapted with ring shaped corrugations and with'a wavy 9 for very little pressures having very small'strokes. line as cross section, with amplitudes, having the According to the present invention diaphragms maximum in the middle diameter and decreasing are used, which are adapted for great differences little or not towards the outer diameter but de- 6 of pressures. For this purpose the annular dia-v creasing to zero towards the inner diameter.
  • phragm 4 is provided with ring shaped corru-
  • a plurality of superposed diaphragms are em- 9 gations and is of such size that, in view of the ployed if it is desired to further reduce the thickdetormation, corresponding to the piston-stroke, ness or the several sheets and .to increase the the bending stress does not amount to more but stroke.
  • one diaphragm 46 also not to much less than. the halt of the stress sheet rests on the other, so that the strain is disto which the material is subjected. The ,deeper tributed to all diaphragms.
  • the diaphragm is formed with ring shaped corrugations a piston reciprocating within the casing, an annular elastic diaphragm clamped in a fluid tight manner at its inner circumference to the outerwall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations' and with a wavy line as cross section, with amplitudes, having the maximum between the inner and the middle diameter nearer to the latter and gradually decreasing to zero towards the inner and towards the outer diameter of the diaphragm ring.
  • a pump comprising a casing having an inlet valve and an outlet valve and provided with a piston reciprocating within the casing, an annular elastic diaphragm clamped in a fluid tight manner at its' inner circumference to the outer wall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations and with a wavy line as cross section, with amplitudes having the maximum between the inner and the middle diameter nearer to the latter and decreasing little or not towards the outer diameter.
  • a pump comprising a casing having an inlet valve and an outlet valve and provided with a piston reciprocating within the casing, an an nular elastic diaphragm clamped in a fluidtight manner at its inner circumference to the outer wall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations and with a wavy line as cross section, with amplitudes, having the maximum in the middle, diameter and gradually decreasing to 'zero towards the inner and towards the outer diameter of the diaphragm ring.
  • a pump comprising a casing having an inlet valve and an outlet valve and provided with apiston reciprocating within the casing, anannular elastic diaphragm clamped in a fluid tight manner at its inner circumference to the .outer wall of the piston and at its outer circumference to the inner wall of' the casing, said diaphragm being formed withring shaped corrugations and I "with a wavy line as cross section with amplitudes, having the maximum in the middle dimeter and decreasing little or not towards the manner at its inner circumference to the outerwall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations and with a wavy line as cross section, the corrugations having a curved or wavy middle line.
  • a pump comprising a casing having an inlet valve and an outlet valve and provided with a piston reciprocating within the casing, an annular elastic diaphragm clamped in a fluid tight manner at its inner circumference to the outer wall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations and with a wavy line as cross section, the corrugations having a curved or wavy middle line and being arranged symmetrically with respect to this middle. line.
  • a pump comprising a casing having an inlet valve and an outlet valve and provided with a piston reciprocating within the casing, an annular elastic diaphragm clamped in a fluid tight manner at its inner circumference to the outer wall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations, and with a wavy line as cross section, and composed o a plurality of superposed plates.
  • a pump comprising a casing having an inlet valve and an outlet valve and provided with a piston reciprocating within the casing, an annular elastic diaphragm clamped in a fluid tight manner at its inner circumference to the outer wall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations, and
  • a pump comprising a casing having an inlet valve and an outlet valve and provided with a piston reciprocating within the casing, an annular elastic diaphragm clamped in a fluid tight manner at its inner circumference to the outer sec wall of the piston and at its outer circumference

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Pumps (AREA)

Description

Sept, 19,1933, RSCHMIDT 1,927,617
PISTON ENGINE OR PISTON PUMP Filed Jan. 6, 1951 I" a I v a r (\V I y v .ANvEn/fO/Q 7 ?uooLF Scrlw/zor A-r'r DRIVE f3 Patented Sept. 19, 1933 I v I I UNITED STATES PATENT. OFFlCE PISTON ENGINE OR PISTON PUMP Rudolf Schmidt, Vienna, Austria Application January s, 1931, Serial No. 506,926, and in Austria January 15,. 1930 9 Claims. (01. 103-150) I have filed an application in Austria on Janface and from a radial bending stress produced uary 15,1930. by deformation and pressure, and further by This invention relates to piston engines (piston stretching of the base of the corrugations and pumps) having a casing, provided with an inlet inclining the latter. From these strains can be 5 valve and an outlet valve and a piston reciprofound by theory the shape of the corrugations 6 cating within the said casing. The object of for the smallest tension and at the greatest bendthe invention is the arrangement of an annular ing of the lamination. Annular laminations elastic diaphragm of undulated sheet metal, constructed in this way allow comparatively long clamped at its inner circumference to the outer strokes from A to 1 centimetre even in case'ot wall of the piston and at its outer circumfera. very small width of the annulus (in a prac- 6 ence to the inner wall of the casing. tical construction for instance 40 millimetres).
One mode of carrying out the invention is Figs. 4a-4g show various forms of the diaillustrated by way of example on the accomphragm. panying sheet of drawing in which Figs. 1 and 2 The diaphragm illustrated by Fig. 4a is formed.
' 1 are two vertical sectional views, the sections bewith ring shaped corrugations and with a wavy 7 ing taken at planes which are vertically disposed line as cross section, with amplitudes, having to each other. Fig. 3 is a detail view and Figs. the maximum M between the inner diameter d:- 4a to 4g show some constructions of the diaand'the middle diameter dm nearer to the latter phragm. and gradually decreasing to zero towards the The piston 1 reciprocating in. the casing inner diameter d; and towards the outer diam- 7 2, of the engine forms a working chamber 3 eter do. of the diaphragm ring. which is provided with an inlet valve 3 and an The diaphragm illustrated by Fig. 4b is formed outlet valve 3. The piston is packed by a with ring shaped corrugations and with a wavy diaphragm 4 with respect to the parts 2 and 5 line as cross section, with amplitudes, having the of the casing. A crank mechanism, comprismaximum M between the inner and the middle 3 ing a piston rod 6, a springy connecting rod '7 diameter nearer to the latter and decreasing little provided at its end with the crank-pin hearing or not towards the outer diameter. 8, serves for driving the reciprocating piston 1. .The diagram illustrated by Fig. 4c is formed- 30 The flywheel 10 is fixed to the crank-shaft 9 with ring shaped corrugations and with a wavy and carries a rubber-ring 11, which co-operates line as cross section, with amplitudes, having the 8 as a friction wheel with a friction roller 12, maximum in the middle diameter and gradually mounted on the shaft of a driving motor 13, decreasing to zero towards the inner and tohinged at 14 to the casing, and pressed down wards the outer diameter of the diaphragm ring.
by its weight or by suitable auxiliary weights G. The diaphragm illustrated by Fig. 4d is formed The common diaphragm pumps are adapted with ring shaped corrugations and with'a wavy 9 for very little pressures having very small'strokes. line as cross section, with amplitudes, having the According to the present invention diaphragms maximum in the middle diameter and decreasing are used, which are adapted for great differences little or not towards the outer diameter but de- 6 of pressures. For this purpose the annular dia-v creasing to zero towards the inner diameter.
phragm 4 is provided with ring shaped corru- A plurality of superposed diaphragms are em- 9 gations and is of such size that, in view of the ployed if it is desired to further reduce the thickdetormation, corresponding to the piston-stroke, ness or the several sheets and .to increase the the bending stress does not amount to more but stroke. In case of compression, one diaphragm 46 also not to much less than. the halt of the stress sheet rests on the other, so that the strain is disto which the material is subjected. The ,deeper tributed to all diaphragms. Either all diacorrugations are forced from the clamping zones, phragms are fixed to the casing and piston and where the greatest bending moments of presprevented from rubbing on one another by insure and deformation are present, towards the terposed lubricants, or only the first diaphragm 50 middle where no bending moment is present, beis fully clamped in order to close the working cause the radial stresses additionally subject to chamber, while the other diaphragmsare gradu- 1 bending the base of the corrugations. The ex: ally shortened towards the zone or the greatest act shape of the corrugations results from the bending stress by reducing their outer diameter,
fact that, incase of an even plate, the tension similarly to the several plates of a plate-spring,
, results at every point from a circumferential 'used for instance as a vehicle-spring (Fig. 3).
bendingstressproducedbythecwvature otthe Inordertoattainthe rreatestpossiblestroke of the diaphragm at a given thickness of the sheet metal, according to Figs. 4c, 4f and 49 the diaphragm is formed with ring shaped corrugations a piston reciprocating within the casing, an annular elastic diaphragm clamped in a fluid tight manner at its inner circumference to the outerwall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations' and with a wavy line as cross section, with amplitudes, having the maximum between the inner and the middle diameter nearer to the latter and gradually decreasing to zero towards the inner and towards the outer diameter of the diaphragm ring.
- 2. In a pump comprising a casing having an inlet valve and an outlet valve and provided with a piston reciprocating within the casing, an annular elastic diaphragm clamped in a fluid tight manner at its' inner circumference to the outer wall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations and with a wavy line as cross section, with amplitudes having the maximum between the inner and the middle diameter nearer to the latter and decreasing little or not towards the outer diameter.
3. In a pump comprising a casing having an inlet valve and an outlet valve and provided with a piston reciprocating within the casing, an an nular elastic diaphragm clamped in a fluidtight manner at its inner circumference to the outer wall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations and with a wavy line as cross section, with amplitudes, having the maximum in the middle, diameter and gradually decreasing to 'zero towards the inner and towards the outer diameter of the diaphragm ring.
4. In a pump comprising a casing having an inlet valve and an outlet valve and provided with apiston reciprocating within the casing, anannular elastic diaphragm clamped in a fluid tight manner at its inner circumference to the .outer wall of the piston and at its outer circumference to the inner wall of' the casing, said diaphragm being formed withring shaped corrugations and I "with a wavy line as cross section with amplitudes, having the maximum in the middle dimeter and decreasing little or not towards the manner at its inner circumference to the outerwall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations and with a wavy line as cross section, the corrugations having a curved or wavy middle line. I
6. In a pump comprising a casing having an inlet valve and an outlet valve and provided with a piston reciprocating within the casing, an annular elastic diaphragm clamped in a fluid tight manner at its inner circumference to the outer wall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations and with a wavy line as cross section, the corrugations having a curved or wavy middle line and being arranged symmetrically with respect to this middle. line.
7. In a pump comprising a casing having an inlet valve and an outlet valve and provided with a piston reciprocating within the casing, an annular elastic diaphragm clamped in a fluid tight manner at its inner circumference to the outer wall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations, and with a wavy line as cross section, and composed o a plurality of superposed plates.
8. In a pump comprising a casing having an inlet valve and an outlet valve and provided with a piston reciprocating within the casing, an annular elastic diaphragm clamped in a fluid tight manner at its inner circumference to the outer wall of the piston and at its outer circumference to the inner wall of the casing, the said diaphragm being formed with ring shaped corrugations, and
with a wavy line as cross section, and composed of a plurality of superposed .plates, becoming gradually'shorter in the manner of a plate spring.
9. In a pump comprising a casing having an inlet valve and an outlet valve and provided with a piston reciprocating within the casing, an annular elastic diaphragm clamped in a fluid tight manner at its inner circumference to the outer sec wall of the piston and at its outer circumference
US506926A 1930-01-15 1931-01-06 Piston engine or piston pump Expired - Lifetime US1927617A (en)

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NL60478A NL32963C (en) 1930-01-15 1932-03-09

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567637A (en) * 1947-01-31 1951-09-11 Hartford Nat Bank & Trust Co Hot gas piston apparatus with flexible crank coupling
US2607322A (en) * 1946-04-26 1952-08-19 Little Inc A Expansion engine
US2751935A (en) * 1954-12-13 1956-06-26 Cutler Hammer Inc Diaphragm elements
US3262335A (en) * 1963-03-01 1966-07-26 Bosch Gmbh Robert Connecting rod transmissions for compressors and the like
DE2916847C2 (en) * 1979-04-26 1982-12-16 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Device made up of piston and connecting rod
US4632082A (en) * 1984-09-12 1986-12-30 Toyota Jidosha Kabushiki Kaisha Device for driving a rotary valve
US4753578A (en) * 1986-11-26 1988-06-28 Morrison Donald R Abrasive fluid pumping apparatus
US5607292A (en) * 1995-07-19 1997-03-04 Rao; Dantam K. Electromagnetic disk pump
EP1022465A3 (en) * 1999-01-19 2000-12-27 LEWA Herbert Ott GmbH + Co. Hydraulically driven diaphragm pump
WO2006058801A1 (en) * 2004-11-30 2006-06-08 Robert Bosch Gmbh Diaphragm pump and diaphragm for a diaphragm pump

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607322A (en) * 1946-04-26 1952-08-19 Little Inc A Expansion engine
US2567637A (en) * 1947-01-31 1951-09-11 Hartford Nat Bank & Trust Co Hot gas piston apparatus with flexible crank coupling
US2751935A (en) * 1954-12-13 1956-06-26 Cutler Hammer Inc Diaphragm elements
US3262335A (en) * 1963-03-01 1966-07-26 Bosch Gmbh Robert Connecting rod transmissions for compressors and the like
DE2916847C2 (en) * 1979-04-26 1982-12-16 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Device made up of piston and connecting rod
US4632082A (en) * 1984-09-12 1986-12-30 Toyota Jidosha Kabushiki Kaisha Device for driving a rotary valve
US4753578A (en) * 1986-11-26 1988-06-28 Morrison Donald R Abrasive fluid pumping apparatus
US5607292A (en) * 1995-07-19 1997-03-04 Rao; Dantam K. Electromagnetic disk pump
EP1022465A3 (en) * 1999-01-19 2000-12-27 LEWA Herbert Ott GmbH + Co. Hydraulically driven diaphragm pump
US6327960B1 (en) 1999-01-19 2001-12-11 Lewa Herbert Ott Gmbh & Co. Diaphragm pump with a hydraulically driven diaphragm
WO2006058801A1 (en) * 2004-11-30 2006-06-08 Robert Bosch Gmbh Diaphragm pump and diaphragm for a diaphragm pump

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