Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
  • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
  • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
  • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
  • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
  • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
  • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
  • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
  • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
  • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
  • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
• • 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
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K15/00—Check valves
  • F16K15/14—Check valves with flexible valve members
  • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
• • 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
  • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
  • F16K27/00—Construction of housing; Use of materials therefor
  • F16K27/02—Construction of housing; Use of materials therefor of lift valves
  • F16K27/0209—Check valves or pivoted valves
• • 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
  • Y10T137/00—Fluid handling
  • Y10T137/7722—Line condition change responsive valves
  • Y10T137/7837—Direct response valves [i.e., check valve type]
• • 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
  • Y10T137/00—Fluid handling
  • Y10T137/7722—Line condition change responsive valves
  • Y10T137/7837—Direct response valves [i.e., check valve type]
  • Y10T137/7838—Plural
  • Y10T137/7839—Dividing and recombining in a single flow path
  • Y10T137/784—Integral resilient member forms plural valves
• • 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
  • Y10T137/00—Fluid handling
  • Y10T137/7722—Line condition change responsive valves
  • Y10T137/7837—Direct response valves [i.e., check valve type]
  • Y10T137/7879—Resilient material valve
  • Y10T137/7888—With valve member flexing about securement
  • Y10T137/789—Central mount

Definitions

• the invention relates to a vacuum pump, in particular a vane pump, with a pump housing, in which a suction chamber is provided, and an opening into the suction pump housing breakthrough, wherein in the pump housing opening into the open or in an external vacuum chamber opening suction check valve is arranged, which in a cup-shaped valve housing is housed and the cup-shaped valve housing has a housing bottom and a housing shell.
• a vacuum pump with such a structure has become known.
• air is sucked out of a vacuum space, for example a brake booster, whereby the suction space inside the vacuum pump is formed by vane cells.
• the vacuum pump is equipped with a suction check valve, which is arranged in a pump housing breakthrough.
• This suction-check valve is sleeve-like and has a cup-shaped valve housing with a housing shell and a housing bottom, wherein the housing bottom is inserted into the pump housing of the vacuum pump.
• the sealing of the suction check valve in the pump housing breakthrough takes place for example by means of sealing elements, for example O-rings.
• a holding body is used in the housing shell of the suction check valve, which serves to hold the valve body.
• the invention has for its object to provide a vacuum pump, in particular a suction check valve, which or which is easy to manufacture and can be easily maintained.
• the invention thus relates to a vacuum pump or a suction check valve, wherein the housing bottom is formed as a separate component, in particular as a holding body for the valve body. During assembly, the housing bottom is equipped with the appropriate valve body and connected to the housing shell.
• the housing bottom is releasably connectable to the housing shell.
• both the assembly and disassembly is considerably simplified by the housing bottom is clipped onto the housing shell.
• an automated assembly is possible.
• the housing shell has at its, the housing bottom receiving free end a flange.
• This flange is integrally formed on the housing shell and thus can absorb high forces.
• the flange In order to fix the housing bottom in any rotational position on the housing shell, the flange is formed circumferentially. Thus, it requires no special orientation of the housing bottom in a predetermined rotational position.
• a simple and easily automated to be performed Verclipsung by pressing the housing bottom to the housing shell is inventively achieved in that the housing bottom at your, the housing shell end facing at least two, the flange engaging fingers.
• the fingers are evenly distributed over the circumference arranged on the housing bottom.
• An optimal hold is achieved by the fingers engage behind the flange.
• the fingers protrude parallel to the longitudinal axis of the suction check valve from the housing bottom and have a section extending radially away from the center of the housing bottom. In this way, the fingers are resilient in both the radial and axial directions.
• the fingers have radially inwardly projecting latching hooks. This latching hook engages behind the flange and abuts against it with prestressing.
• Figure 1 is a side view of a suction check valve, which is inserted into a suggestively illustrated housing of a vacuum pump;
• Figure 2 is an enlarged exploded view of the suction check valve of Figure 1;
• FIG. 3 shows a further exploded view of the suction check valve according to FIG. 1.
• FIG. 1 shows an indication of a pump housing, designated as a whole by 10, of a vacuum pump 12, where 14 denotes the inner peripheral surface of a suction chamber 16.
• a suction check valve 24 is used, on whose free end 26 a (not shown) suction hose can be pushed.
• the suction check valve 24 has a valve housing 28, which is cup-shaped and is essentially formed by a housing shell 30 and a housing bottom 32.
• the housing shell 30 has a housing bottom 32 facing free end 34, to which the housing bottom 32 is attached.
• the suction check valve 24 is provided with a circumferential groove 36.
• an elastic valve body 40 is still shown, which is arranged between the housing shell 30 and the housing bottom 32 and is held by the housing shell 30.
• the embodiment of the housing bottom 32 can be seen, which has a total of six fingers 42 which are arranged radially around the center of the housing bottom 32.
• the fingers 42 have a radially extending first portion 44 and a parallel to the longitudinal axis 46 of the suction check valve 24 extending second portion 48, which ends in latching hook 50.
• These snap hooks 50 engage behind mounted suction check valve 24 has a radially projecting shoulder 52 of a flange 54 which is formed by the free end 34. This shoulder 52 completely turns around, so that the housing bottom 32 can be clipped in any rotational position.
• the apertures 56 between the fingers 42 serve to pass the fluid which undergoes no directional change, i. in the direction of the longitudinal axis 46, the housing bottom 32 can flow through.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Applications Or Details Of Rotary Compressors (AREA)
• Rotary Pumps (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44510969

Family Applications (1)

Country Status (5)

Families Citing this family (3)

Family Cites Families (22)

• 2010
  • 2010-08-16 DE DE201010039343 patent/DE102010039343B4/de active Active
• 2011
  • 2011-08-16 US US13/817,118 patent/US8997781B2/en active Active
  • 2011-08-16 WO PCT/EP2011/064064 patent/WO2012022732A2/de active Application Filing
  • 2011-08-16 CN CN201180039623.4A patent/CN103261764B/zh active Active
  • 2011-08-16 EP EP11748624.1A patent/EP2606236A2/de not_active Withdrawn

Non-Patent Citations (1)

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