EP1719911A1 - Plaque d'étanchéité et procédé de la fabrication de ladite plaque - Google Patents

Plaque d'étanchéité et procédé de la fabrication de ladite plaque Download PDF

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Publication number
EP1719911A1
EP1719911A1 EP05405282A EP05405282A EP1719911A1 EP 1719911 A1 EP1719911 A1 EP 1719911A1 EP 05405282 A EP05405282 A EP 05405282A EP 05405282 A EP05405282 A EP 05405282A EP 1719911 A1 EP1719911 A1 EP 1719911A1
Authority
EP
European Patent Office
Prior art keywords
plate
sealing
bead
metal
groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05405282A
Other languages
German (de)
English (en)
Other versions
EP1719911B1 (fr
Inventor
Franz Lehmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE602005013367T priority Critical patent/DE602005013367D1/de
Priority to AT05405282T priority patent/ATE426097T1/de
Priority to PT05405282T priority patent/PT1719911E/pt
Priority to PL05405282T priority patent/PL1719911T3/pl
Priority to EP05405282A priority patent/EP1719911B1/fr
Application filed by Individual filed Critical Individual
Priority to DK05405282T priority patent/DK1719911T3/da
Priority to ES05405282T priority patent/ES2322278T3/es
Publication of EP1719911A1 publication Critical patent/EP1719911A1/fr
Application granted granted Critical
Publication of EP1719911B1 publication Critical patent/EP1719911B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1066—Valve plates
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1009—Distribution 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
    • F04B27/10—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B27/1036—Component parts, details, e.g. sealings, lubrication

Definitions

  • the invention concerns a sealing plate, in particular a valve plate, according to the preamble of claim 1, as well as a method for making the same.
  • Valve plates of this type are used in compressors for the cooling systems of refrigerators or in air conditioning systems of cars, for example.
  • a plate surface of an already known valve plate is provided with a circumferential groove surrounding a port of the valve plate, the material between said groove and the port forming a sealing bead. Its plate surfaces, including the sealing surfaces of the sealing beads, are flat grinded in order to ensure tight sealing. However, flat grinding is a rather expensive production process.
  • An object of the invention is to provide a sealing plate with one or more sealing beads having acurately shaped sealing surfaces and which can be produced at a lower cost.
  • Fig. 1 shows part of a sealing plate 1 in cross-sectional view, in a plane comprising the axis 2 of a port 3 through the plate.
  • the sealing plate consists of a metal which is soutable to be shaped by cold, plastic deformation, such as low carbon steel, copper or aluminum, for example.
  • This metal plate has essentially parallel plate surfaces 4, 5 and one or more ports extending through the plate, only one of which is shown in the drawing.
  • This port 3 is made with a stamping tool (not shown), the stamping direction of which is indicated by arrow 6.
  • One of the plate surfaces is depressed in a zone 7 around the port 3, preferably in an embossing process.
  • the displacement of plate metal from the depressed zone results in plate metal being upset on the opposite side of the plate, forming a metal bead 8 bordering the edge of the port 3.
  • This bead constitutes an elevation of the plate surface 4.
  • upset plate metal refers, in a broad sense, to an elevation of plate metal on a plate surface, formed by plastic deformation of the plate.
  • the upset metal is preferrably allowed to build up in a free flowing manner: It is not pressed against a surface of a shaping tool.
  • the top of the bead 8 is convex in cross-section.
  • this bead 8 is flat pressed, turning it into a sealing bead 9 with a flat sealing surface 10, as shown in Figs 3 and 4.
  • An embossing tool 11 which is preferably used for this flat pressing of the bead 8 is shown in Fig. 4.
  • edges 14, 15 of the pressed, flat sealing surface 10 are usually slightly rounded, in the shape of a flow curve, whereas they would necessarily be sharp if the bead was flat grinded.
  • the sealing bead 9 has a preferred width 12 of 0.3 mm to 2 mm and a preferred height 13 of 0.02 to 0.2 mm. These dimensional indications also apply to the sealing beads in the examples described hereinafter and will not be repeated.
  • Fig. 5 shows the sectional view of a sealing plate 1 with two parallel beads 16, 17 on each of the plate surfaces 4, 5. These beads are shown in cross-section.
  • Fig. 6 the shape of an embossing tool 18 which is used for forming the beads 16, 17 on one plate surface 4 is shown as well. It is of v-shaped cross-section, with a working surface 19, and is used to press a v-shaped groove 20 into a surface of the sealing plate.
  • plate metal is upset along the groove on both sides of the same, forming said beads 16, 17 which, together, constitute a dual bead seal.
  • the embossing tool Adjacent to the v-shaped working surface 19, the embossing tool has a flat abutment surface 21 which is brought in flat engagement with the plate surface during the embossing step.
  • the depth of the groove 20 is equal to the height 22 of the tip of the v-shaped working surface above the abutment surface 21.
  • the tool 18 has a recess 23 in order to allow free flowing upsetting of plate metal on both sides of the groove 20.
  • the identical v-shaped groove 24 on the opposite side of the plate is formed in the same way, and preferably at the same time, with a second embossing tool of the same kind (not shown).
  • Fig. 7 shows the sealing plate 1 of Fig. 5 with press-shaped, flat sealing surfaces on the sealing beads.
  • the flat embossing tool which is used to form these flat sealing surfaces is shown in Fig. 8.
  • This flat pressing methode and the characteristics of the resulting sealing surfaces correspond essentially to the flat pressing of a single bead seal as described with reference to Fig. 4.
  • the sealing plate is preferably pressed between two parallel flat embossing tools (only one of which is shown in Fig. 8), thereby forming all of the sealing surfaces simultaneously.
  • Fig. 7 further shows a possible application of the sealing plate, where it is mounted between two parts 56, 57, in tight engagement with their respective connection surfaces.
  • the grooves 20, 24 between the beads of the dual bead seals are closed by said connection surfaces of the parts 56, 57, forming chambers 57, 58.
  • pairs of grooves 20, 24, pressed into the plate surfaces of the sealing plate in opposite positions may be connected to one another by one or more conducts 26, thereby applying a certain pressure, created in one chamber 58 to a chamber 59 on the opposite side of the plate as well.
  • the conducts 26 may also be used to evacuate a liquid or a gas leaked through a first sealing line of a dual bead seal, in order to prevent it from leaking through the second sealing line of the same dual bead seal as well.
  • Fig. 9 shows, in sectional view, a portion of a metal plate 1, similar to the one shown in Fig. 5, but with only one groove 27 pressed into one of the plate surfaces.
  • Fig. 10 shows on an enlarged scale the shape of this groove, as well as the shape of an embossing tool 31 which is used to press the groove 27 into the plate surface.
  • the groove 27 has a first flank 28 which is perpendicular to the plane 30 of the plate and a second flank 29 which is inclined to the plane 30 of the plate.
  • the embossing tool 31 is shaped correspondingly with an embossing edge 32 and an inclined working surface 33.
  • the embossing process with an embossing tool of this kind is also called wedge embossing. In this process, sheet metal from the groove is displaced by said working surface 33 of the embossing tool and plate metal is thereby upset along the groove, forming a bead 34 bordering the inclined flank 29 of the groove.
  • the wedge shaped embossing tool shown in Fig. 10 has an abutment surface 35 defining the depth of the groove and a recess 36 between this abutment surface 35 and the working surface 33 which allows the free flowing upsetting of plate metal when the groove is pressed into the plate surface.
  • Fig. 11 shows the result of the second production step:
  • the bead 34 (Fig. 10) is provided with a pressed, flat sealing surface.
  • the embossing tool 11 which is used to press-form this sealing surface is shown in Fig. 12. This method and its results have already been described with reference to Fig. 4.
  • a dual bead seal with a v-shaped groove as shown in Fig. 7 could also be used on one of the plate surfaces only, while the single bead seal bordering a wedge-shaped groove as shown in Fig. 10 could also be provided on both sides of the sealing plate.
  • Fig. 13 shows in cross-section the outer border of a sealing plate with beads of upset plate metal provided along said border on each side of the plate.
  • Fig. 14 shows how these beads are formed: A tool 37 is laterally pressed against the border surface 38 of the sealing plate, whereby the plate is upset along its border.
  • the upset plate metal is not pressed into a certain shape by the press tool 37 or any other shaping tool during the action of this tool: the beads 39, 40 are formed by free flowing upsetting.
  • these beads are flat pressed in a subsequent step of the manufacturing process, providing them with pressed, flat sealing surfaces as already explained with reference to Fig. 4.
  • a part of the sealing plate with these sealing beads is shown in Fig. 15 and the press tools 11 which are used to press-shape these sealing surfaces are indicated in Fig. 16.
  • Fig. 17 shows a valve plate with sealing beads formed according to methodes described hereinbefore. Besides seven screw holes 40 provided along its periphery, this valve plate has seven inlet ports 41 and seven corresponding outlet ports 42. Each of these ports 40, 41 is individually surrounded on each of the plate surfaces by a dual bead seal 43 of the type shown in figures 7 and 8, separating it from neighbouring ports. Only the edges of the v-shaped groove 20 (see Fig. 7) of these dual bead seals 43 are shown in Fig. 17.
  • Fig. 18 shows the same valve plate in cross-sectional view.
  • the two encircled details XIX and XX are shown on an enlarged scale in Fig. 19 and Fig. 20 respectively.
  • the sealing beads 44, 45 of the dual bead seals 43 are shown in these views.
  • Valve seats 46, 47 are formed on opposite plate surfaces, bordering the edges of the valve ports 41 and 42 respectively. These valve seats are sealing beads formed according to the method described with reference to the Figs. 1 to 4.
  • the sealing surfaces of all the valve seats 46, 47 and all the other sealing beads 44 of this valve plate may be formed at once with the same flat pressing tool to ensure that all the sealing surfaces on the same side of the valve plate (or any other sealing plate) are in a common plane.
  • Fig. 21 shows another type of valve plate with a single valve port 48 and three screw holes 49. On both of the plate surfaces the valve port 48 is surrounded by a sealing bead 50.
  • the valve plate is of four-sided contour and has sealing beads on both plate surfaces along two opposite sides 51, 52 of its outer border.
  • Fig. 22 shows the valve plate of Fig. 21 in cross-section.
  • the two circled details XXIII and XXIV are shown at an enlarged scale in Figures 23 and 24 respectively.
  • a valve seat 53 bordering an edge of the port 48 is formed on one of the plate surfaces according to the method described with reference to Figures 1 to 4.
  • the sealing beads 50 are formed by wedge embossing and provided with pressed, flat sealing surfaces 54 as described with reference to Figures 9 to 12.
  • the sealing beads 55 along the side 52 of the valve plate's outer border (see Fig. 24), as well as identical sealing beads along the opposite side 51, are formed by lateral embossing as described with reference to the figures 13 to 16.
EP05405282A 2005-04-05 2005-04-05 Procédé de la fabrication de une plaque de soupape Not-in-force EP1719911B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT05405282T ATE426097T1 (de) 2005-04-05 2005-04-05 Herstellungsverfahren fur eine ventilplatte
PT05405282T PT1719911E (pt) 2005-04-05 2005-04-05 Processo de produção de um prato de válvula
PL05405282T PL1719911T3 (pl) 2005-04-05 2005-04-05 Sposób wytwarzania zaworu płytkowego
EP05405282A EP1719911B1 (fr) 2005-04-05 2005-04-05 Procédé de la fabrication de une plaque de soupape
DE602005013367T DE602005013367D1 (de) 2005-04-05 2005-04-05 Herstellungsverfahren für eine Ventilplatte
DK05405282T DK1719911T3 (da) 2005-04-05 2005-04-05 Fremgangsmåde til fremstilling af en ventilplade
ES05405282T ES2322278T3 (es) 2005-04-05 2005-04-05 Metodo para la fabricacion de una placa de valvula.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05405282A EP1719911B1 (fr) 2005-04-05 2005-04-05 Procédé de la fabrication de une plaque de soupape

Publications (2)

Publication Number Publication Date
EP1719911A1 true EP1719911A1 (fr) 2006-11-08
EP1719911B1 EP1719911B1 (fr) 2009-03-18

Family

ID=34942958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05405282A Not-in-force EP1719911B1 (fr) 2005-04-05 2005-04-05 Procédé de la fabrication de une plaque de soupape

Country Status (7)

Country Link
EP (1) EP1719911B1 (fr)
AT (1) ATE426097T1 (fr)
DE (1) DE602005013367D1 (fr)
DK (1) DK1719911T3 (fr)
ES (1) ES2322278T3 (fr)
PL (1) PL1719911T3 (fr)
PT (1) PT1719911E (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60220276A (ja) * 1984-04-12 1985-11-02 Matsushita Electric Ind Co Ltd 圧縮機の弁板製造方法
US4759556A (en) * 1987-10-27 1988-07-26 Ishikawa Gasket Co., Ltd. Metal gasket with auxiliary bead
US4834399A (en) * 1986-11-10 1989-05-30 Ishikawa Gasket Co., Ltd. Steel laminate gasket
US5122214A (en) * 1988-07-18 1992-06-16 Fel-Pro Incorporated Method of making a rubber laminated gasket
JPH09242874A (ja) * 1996-03-12 1997-09-16 Nok Corp ガスケット
US6186514B1 (en) * 1997-01-08 2001-02-13 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Gasket for sealing a refrigerant compressor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60220276A (ja) * 1984-04-12 1985-11-02 Matsushita Electric Ind Co Ltd 圧縮機の弁板製造方法
US4834399A (en) * 1986-11-10 1989-05-30 Ishikawa Gasket Co., Ltd. Steel laminate gasket
US4759556A (en) * 1987-10-27 1988-07-26 Ishikawa Gasket Co., Ltd. Metal gasket with auxiliary bead
US5122214A (en) * 1988-07-18 1992-06-16 Fel-Pro Incorporated Method of making a rubber laminated gasket
JPH09242874A (ja) * 1996-03-12 1997-09-16 Nok Corp ガスケット
US6186514B1 (en) * 1997-01-08 2001-02-13 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Gasket for sealing a refrigerant compressor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 077 (M - 464) 26 March 1986 (1986-03-26) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 01 30 January 1998 (1998-01-30) *

Also Published As

Publication number Publication date
DK1719911T3 (da) 2009-06-15
ES2322278T3 (es) 2009-06-18
ATE426097T1 (de) 2009-04-15
EP1719911B1 (fr) 2009-03-18
PT1719911E (pt) 2009-05-29
DE602005013367D1 (de) 2009-04-30
PL1719911T3 (pl) 2009-08-31

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