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Backflow non-return valve and filter

A filter device and shut-off valve technology, applied in valve devices, transportation and packaging, control valves, etc., can solve the problems of high manufacturing cost, leakage, etc., achieve the effect of flexible installation and protection from hot exhaust gas damage

Active Publication Date: 2012-04-25
MANN HUMMEL GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these valves can withstand higher temperatures, they are relatively large and heavy, requiring high manufacturing costs
In addition, such valves can often only be installed in a predetermined orientation, because gravity acts on the heavy disc, which in unfavorable installation situations bears the load against the closing direction, resulting in the possibility of continuous leakage

Method used

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  • Backflow non-return valve and filter
  • Backflow non-return valve and filter
  • Backflow non-return valve and filter

Examples

Experimental program
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Embodiment Construction

[0038] figure 1Shown is a backflow shutoff valve, in particular a motor vehicle backflow shutoff valve 10 , a filter device 11 and an exhaust manifold 30 . The filter device 11 has a connection chamber 12 , a filter chamber 14 and a separation chamber 16 . Filter device 11 is provided, for example, in a motor vehicle (not shown). The filter device serves to filter a fluid, for example air, which is sucked in from the surroundings of the motor vehicle via an air supply 18 and delivered via an air discharge 20 to the internal combustion engine of the motor vehicle for the combustion process.

[0039] Exhaust gases from the combustion process are released to the surroundings through exhaust manifold 30 . The exhaust manifold 30 has a silencer 32 , an intermediate pipe 38 , an exhaust gas injector 34 and an exhaust pipe 36 . The exhaust branch pipe 30 communicates with the internal combustion engine through the exhaust gas delivery part 40 . The exhaust gas injector 34 communi...

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PUM

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Abstract

A vehicle backflow non-return valve (10) for preventing a filter from being damaged by hot waste heat comprises a valve body (65), a valve disk (76), an elastic element (70), and a guide pin (72), wherein the valve disk (76) comprises a sleeve (68) that encloses the guide pin (72), the valve disk is movable along the guide pin (72), prevents fluid from flowing through the valve body (65) along a checked direction, and allows fluid flowing through the valve body (65) along the other direction. The elastic element (70) applies closing force to the valve disk (76). The first sleeve portion (71) of the sleeve moves at a guide surface (75) of the guide pin (72) in a movable manner, and a second sleeve portion (69) surrounds the guide pin (72) and the elastic element (70) in radial direction.

Description

technical field [0001] The invention relates to a backflow shut-off valve, such as a motor vehicle backflow shut-off valve for protecting filters from hot exhaust gases. The invention also relates to a motor vehicle filter device comprising a backflow shut-off valve. Background technique [0002] Motor vehicle internal combustion engines require oxygen in order to burn power fuel. Oxygenated air is thus sucked in from the surroundings and cleaned with the aid of an air filter. Motor vehicle air filters have, for example, a filter body and a separation chamber. The filter body comprises, for example, a non-woven filter for adhering dirt particles from the air. Dirt accumulates in the separation chamber, which is filtered from the air during the pre-separation without adhering to the filter body. [0003] The separation chamber can be connected to an exhaust gas injector in the exhaust manifold of the motor vehicle in order to remove dirt from the separation chamber. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/08F16K15/02F16K17/04
CPCF02M35/10236F16K15/063F02M35/086Y02T10/16Y02T10/12Y10T137/7852Y10T137/7922Y10T137/7935
Inventor R·厄尔普克
Owner MANN HUMMEL GMBH