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Valve equipment for venting liquid tanks

A valve and equipment technology, applied in the field of valve equipment, can solve the problem of increasing the risk of fluid passing through, and achieve the effect of preventing liquid from entering

Inactive Publication Date: 2021-07-30
PLASTIC OMNIUM ADVANCED INNOVATION & RES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These known float valves can be made short and wide, but because the height at which the valve closes becomes closer to the height of the exhaust opening, the risk of fluid passing through before the valve closes increases

Method used

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  • Valve equipment for venting liquid tanks
  • Valve equipment for venting liquid tanks
  • Valve equipment for venting liquid tanks

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Embodiment Construction

[0045] The present invention provides a valve device for venting a liquid storage tank. In a particular embodiment, the valve device of the invention may be used in a fuel tank of a motor vehicle. The valve arrangement of the present invention can operate as a roll over valve (ROV) or a fill limit vent valve (FLVV).

[0046] "Fuel" is understood to mean a mixture of liquid or liquefied hydrocarbons, such as are commonly used to power internal combustion engines, including fuels known as gasoline, diesel, ethanol, and the like. The valve arrangement according to the invention is particularly suitable for venting fuel tanks containing fuel with a relatively high vapor pressure, such as gasoline.

[0047] Fuel tanks used in conjunction with the present invention are preferably made of plastic.

[0048] The walls of the fuel tank may comprise a single thermoplastic layer or two layers. One or more other possible additional layers may advantageously comprise a layer made of a ma...

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PUM

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Abstract

The invention proposes a valve device for use in a liquid tank, comprising: - a housing (201) defining a main chamber (202) having an inlet opening (203) and at least one an outlet opening (204); - extraction means (208) comprising at least one wall member extending generally through said main chamber and adapted to extract the liquid present from said liquid tank via said inlet droplets in the vapor flow opening into said main chamber; - a float (209) comprising a closing element (210) capable of closing said outlet opening, said float being slidable along said at least one wall member installed.

Description

technical field [0001] The invention relates to a valve arrangement for venting a liquid tank, in particular a fuel tank which may be equipped with a motor vehicle. Background technique [0002] In fuel systems, it is known to use float valves to avoid allowing significant quantities of liquid fuel to enter the vent line to the vapor storage tank. [0003] It is known to use float valves equipped with baffles (or walls) to reduce the risk of liquid being carried into the tank. Such baffles are generally designed to separate liquid droplets carried by the vapor flow. An example of a known float valve equipped with a baffle is described in patent document US 6,405,747. These known float valves are bulky and are not suitable for placement in the interior area of ​​the tank where the height between the tank bottom and the tank top is the smallest and the height between the tank's full liquid level and the tank top is also the smallest. middle. These known float valves can be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K15/035B60K15/03
CPCB60K2015/03289B60K15/035B60K2015/03509F16K31/18F16K24/042
Inventor 多米尼克·马杜朱勒-约瑟夫·范夏夫汀根
Owner PLASTIC OMNIUM ADVANCED INNOVATION & RES SA