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
  • 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
  • F04B39/1073—Adaptations or arrangements of distribution members the members being reed valves

Definitions

• the invention relates to an automatic valve for a reciprocating compressor.
• Such reciprocating compressors are sufficiently known in different versions from the StdT such as DE 10 2014 111 526 A1, whereby a distinction is essentially made between two functional valves in reciprocating compressors, the valve through which air can flow into the displacement and the valve through which compressed air can be extracted the displacement is conveyed out.
• Reciprocating compressors are used in motor vehicles to supply a service brake operated with compressed air and / or an air suspension with compressed air, for example. Ambient air is sucked in by the compressor, compressed and cleaned of foreign components, such as oil and water, in other components of the compressed air supply device before use in the consumers.
• Valves for this purpose differ in essentially two types.
• a valve is known in which the movement of the closure lamella is limited by a catcher or a stop surface.
• the suction process can be described as follows:
• the pressure difference sets the valve lamella in an opening movement, with the movable section of the valve lamella being bent
• a failure of the valve lamella i.e. a break at any point in the lamella, leads directly to the failure of the compressor and fragments can damage the compressor.
• the invention is based on the object of proposing a valve plate with a valve lamella which represents an improvement on the StdT.
• a valve plate for installation in a reciprocating piston compressor which comprises a support area and a valve area, the valve area having a movable valve lamella with a valve seat, by means of which the passage channels for a controlled medium in a valve support plate can be closed, the valve area via webs on the support area engages the valve plate so that the valve lamella is fixed relative to the carrier area.
• the valve area has a web area which is fixed by means of the webs with respect to the carrier area, the valve lamella being flexibly connected to the web area.
• the valve seat is the area on the valve lamella that provides a sealing surface through which the passage channels can be sealed.
• a bending zone along a bending axis can be provided between the valve lamella and the web area.
• the bending load in the bending zone occurs when the piston is used in a reciprocating compressor when the piston moves in the displacement and a negative pressure is created in the displacement, whereby a medium, in particular air, is sucked out of a suction chamber through inlet openings in the valve plate. The flowing air acts on the valve lamella and bends it into the displacement.
• the opening angle can be changed so that the passage cross-section for the controlled medium and the
• valve plate or the valve area provision can be made for a web area with two bending zones to be provided along a respective bending axis, with one valve lamella being flexibly connected to each bending zone.
• the valve lamellae are preferably designed symmetrically.
• the bending zone comprises two or more bending sections via which the valve lamellae are flexibly connected to the web area. Due to the dimensions and the position of the bending sections, the bending forces in the bending sections can be influenced very advantageously and the bending can thus also be determined.
• One or more outlet openings for the controlled medium can also be provided in the valve area.
• the compressed air is conveyed out of the cubic capacity again through the outlet openings.
• valve plate has a sealing contour on at least one side through which the valve area is separated from other Functional areas is separated.
• the valve plate can take on other functions such as connecting channels of the compressor from the crankcase area to the cylinder head area in a fluid-tight manner or to separate chambers in the valve support plate from chambers or channels in the crankcase in a fluid-tight manner.
• the sealing contour can be a contour embossed in the valve plate or a sealing compound applied to the valve plate.
• Another design can be a valve plate with two or more valve areas, e.g. for a two-stage reciprocating piston compressor.
• valve plate as described above can advantageously be used as a suction valve in a compressor, the valve plate being clamped in the compressor between a valve support plate with through channels for the entry and exit of a controlled medium into and out of a pump chamber, and a crankcase.
• valve support plate and the crankcase can have channels and / or spaces, the valve plate having functional areas through which the channels and / or spaces are connected to one another in a fluid-conducting manner or separated from one another in a fluid-tight manner.
• air and cooling water can flow through the channels and / or spaces.
• FIG. 2 sectional view of the valve plate built into the compressor
• Figure 1 show a valve plate 1 with two valve areas 2a, 2b for a two-stage reciprocating compressor.
• the design or the contour of the Valve areas 2a, 2b are exemplarily adapted to the requirements of the individual stages and can also be designed differently.
• This figure shows a valve plate 1 from the direction of the displacement in which the first compressor stage can be seen at the top and the second compressor stage at the bottom. Furthermore, the kidney-shaped inlet channels 3 (dashed lines) are indicated in the area of the valve lamellas 5.
• the valve plate 1 is divided into several areas: the carrier area 8, the valve areas 2a, 2b, and the functional areas 15a to 15d. Both
• Functional areas are not explained separately for each part.
• the essential function of these functional areas is to either connect channels and spaces in the crankcase 10 and / or the valve support plate 9 or to separate them from one another.
• the individual areas 2a, 2b, 8 and / or functional areas 15a to 15d are applied by a sealing contour or also one
• Each valve area 2a, 2b can be divided into three further areas.
• the essential bending of the valve lamella 5 takes place in the bending zone, the valve lamella 5 forming a bending curve when it bends in the bending zone.
• the bending zone is divided into two or more bending sections, via which the valve lamellae 5 are flexibly connected to the web area 13. The bending sections thus form flexible ones
• the web area 13 is connected to the carrier area 8 via webs 7. Since the valve plate 1 and thus the support area 8 are firmly clamped in the installed state, the web area 13 is also fixed with the webs 7. The means that even when the valve lamellae 5 are bent, the web area remains essentially fixed in its position.
• valve regions 2a, 2b openings are also provided which form the outlet channels 4 through which compressed air can flow out of the displacement 11 again.
• FIG. 2 shows a sectional view of the valve plate 1 installed in the compressor.
• this is a concept that comprises a catcherless suction valve that is connected to the valve plate 1 via connection points, so that a so-called material-pair joint is formed.
• valve plate 1 is clamped between the valve support plate 8 and the crankcase 10.
• the sealing contour cannot be seen here, but it is applied at the appropriate points so that the fluid-tight shielding of the individual functional areas is achieved.
• valve lamellas function positions, suction and compression, are also shown.
• Valve lamella 5 is bent by the negative pressure generated by the piston and the resulting pressure difference in the direction of the piston.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Compressor (AREA)
• Check Valves (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=71266617

Family Applications (1)

Country Status (6)

Families Citing this family (1)

Family Cites Families (8)

• 2019
  • 2019-07-01 DE DE102019117634.4A patent/DE102019117634A1/de active Pending
• 2020
  • 2020-06-17 WO PCT/EP2020/066658 patent/WO2021001148A1/de unknown
  • 2020-06-17 CN CN202080048150.3A patent/CN114041024A/zh active Pending
  • 2020-06-17 US US17/624,401 patent/US20220356872A1/en not_active Abandoned
  • 2020-06-17 EP EP20735088.5A patent/EP3994378A1/de not_active Withdrawn
  • 2020-06-17 JP JP2021578128A patent/JP2022538661A/ja not_active Withdrawn

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