VALVE PLATE HAVING VALVE LAMELLAE

Abstract

A valve plate for installation in a reciprocating compressor includes a carrier region and a valve region. The valve region has a movable valve lamella having a valve seat for sealing passage channels for a controlled medium in a valve carrier plate. The valve region engages the carrier region of the valve plate via webs so that the valve lamella is fixed relative to the carrier region. The valve region has a web region, which is fixed by the webs relative to the carrier region, and the valve lamella is flexibly attached to the web region. A compressor with a valve plate is also provided.

Claims

1-10. (canceled)

11. A valve plate for installation into a reciprocating piston compressor, the valve plate comprising: a carrier region and a valve region; said valve region having a movable valve lamella with a valve seat for closing passage ducts in a valve carrier plate for a controlled medium; said valve region having webs acting on said carrier region and causing said valve lamella to be fixed relative to said carrier region; and said valve region having a web region being fixed by said webs relative to said carrier region, said valve lamella being attached flexibly to said web region.

12. The valve plate according to claim 11, which further comprises a bending zone provided along a bend axis between said valve lamella and said web region.

13. The valve plate according to claim 12, which further comprises another bending zone and another valve lamella, each of said bending zones in said web region being disposed along a respective bend axis, and each of said valve lamellae being attached flexibly to a respective one of said bending zones.

14. The valve plate according to claim 13, wherein said valve lamellae have a symmetrical shape.

15. The valve plate according to claim 13, wherein said bending zones include two or more bending portions at which said valve lamellae are attached flexibly to said web region.

16. The valve plate according to claim 11, wherein said valve region has one or more outlet openings for the controlled medium.

17. The valve plate according to claim 11, which further comprises functional regions separated from said valve region, and a seal contour disposed on at least one side of the valve plate.

18. The valve plate according to claim 11, which further comprises at least one further valve region.

19. A compressor, comprising: a piston-swept chamber; a valve carrier plate having passage ducts for an inflow and an outflow of a controlled medium into and from said piston-swept chamber; a crankcase; and a valve plate according to claim 11 acting as an intake valve and being clamped between said valve carrier plate and said crankcase.

20. The compressor according to claim 19, wherein said valve carrier plate and said crankcase have at least one of ducts or spaces, and the valve plate has functional regions fluid-tightly connecting said at least one of ducts or spaces to one another or disconnecting said at least one of ducts or spaces from one another.

Description

[0025] FIG. 1 shows a valve plate 1 with two valve regions 2a, 2b for a two-stage reciprocating piston compressor. The design or the contour of the valve regions 2a, 2b is adapted by way of example to the requirements of the individual stages, and can also be of different design.

[0026] This depiction shows a valve plate 1 from the direction of the piston-swept chamber, in the case of which the first compressor stage can be seen at the top and the second compressor stage can be seen at the bottom. Furthermore, the kidney-shaped inlet ducts 3 (dashed lines) are indicated in the region of the valve lamellae 5.

[0027] The valve plate 1 is divided into a plurality of regions: the carrier region 8, the valve regions 2a, 2b, and the functional regions 15a to 15d. An explanation of each part separately is dispensed with in the case of the functional regions. The essential function of said functional regions is either to connect or to disconnect ducts and spaces in the crankcase 10 and/or the valve carrier plate 9. The individual regions 2a, 2b, 8 and functional regions 15a to 15d are separated from one another by way of a seal contour or else an applied sealing compound.

[0028] Each valve region 2a, 2b can be divided into three further regions: the web region 13 and the two lamella regions 14 which are separated by way of the bend axes 6, the direct region along the bend axis also being called a bending zone. The essential bending of the valve lamella 5 takes place in the bending zone, the valve lamella 5 forming a bending curve in the bending zone during the bending.

[0029] In order to set the required bending forces, the bending zone is divided into two or more bending portions, via which the valve lamellae 5 are attached flexibly to the web region 13. The bending portions therefore form flexible connecting webs.

[0030] The web region 13 is attached via webs 7 to the carrier region 8. Since the valve plate 1 and therefore the carrier region 8 are clamped in fixedly in the installed state, the web region 13 with the webs 7 is likewise fixed. This means that the web region remains substantially fixed in its position even in the case of bending of the valve lamellae 5.

[0031] Furthermore, openings are provided in the valve regions 2a, 2b, which openings form the outlet ducts 4, through which compressed air can flow out of the piston-swept chamber 11 again.

[0032] FIG. 2 shows a sectional illustration of the valve plate 1 which is installed in the compressor. This is generally a concept which comprises a catcher-less intake valve which is connected via connecting points to the valve plate 1, with the result that what is known as an integrally paired joint is formed.

[0033] The valve plate 1 is clamped in between the valve carrier plate 8 and the crankcase 10. The seal contour cannot be seen here, but it is applied at the corresponding points, with the result that the fluid-tight shielding of the individual functional regions is achieved.

[0034] Furthermore, the two valve lamella functional positions of intake and compression are shown: for one thing the basic position, in the case of which the inlet duct 3 is closed by way of the valve lamella 5, and for another thing the open position, in the case of which the valve lamella 5 is bent in the direction of the piston by way of the vacuum which is generated by the piston and the pressure difference which is produced.

[0035] The illustration and explanation of the further components are dispensed with, since they are not relevant for the comprehension of the invention.

LIST OF DESIGNATIONS

[0036] 1 Valve plate

[0037] 2a, b Valve region

[0038] 3 Inlet duct

[0039] 4 Outlet duct

[0040] 5 Valve lamella

[0041] 6 Bend axis

[0042] 7 Web

[0043] 8 Carrier region

[0044] 9 Valve carrier plate

[0045] 10 Crankcase

[0046] 11 Piston-swept chamber

[0047] 12 Seal contour

[0048] 13 Web region

[0049] 14 Lamella region

[0050] 15a, . . . Functional region

[0051] 16 Duct

[0052] 17 Space

[0053] 19 Inlet space