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Fuel filter and process for producing a fuel filter

A technology for fuel filters and filter parts, which is applied in chemical instruments and methods, membrane filters, fixed filter element filters, etc., can solve the problems of increased cost, no filtering effect, high cost, etc., and achieves a simple manufacturing solution Effect

Inactive Publication Date: 2009-04-01
CONTINENTAL AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this fuel filter is that the filter has a welded edge which only increases the outer dimensions of the fuel filter but does not perform a filtering function, which is relatively expensive to manufacture.
Furthermore, the processing of the soft filter cloth after injection molding up to welding of the edges significantly increases the costs in the manufacture of fuel filters

Method used

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  • Fuel filter and process for producing a fuel filter
  • Fuel filter and process for producing a fuel filter
  • Fuel filter and process for producing a fuel filter

Examples

Experimental program
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Embodiment Construction

[0028] FIG. 1 shows a sectional illustration of a filter cloth web 1 which is fed as a continuous material from a reel to a not shown injection molding machine. The direction of movement of the filter cloth web is oriented in the plane of the drawing.

[0029] FIG. 2 shows the filter cloth web 1 after leaving the injection molding machine. In an injection molding machine, the two filter elements 2 , 3 are injection-molded onto the filter cloth web 1 adjacent to each other and thus perpendicularly to the direction of movement of the filter cloth web 1 in such a way that the filter cloth 1 substantially covers the filter elements 2 , 3 respective upper surfaces.

[0030] At the same time, the injection-molded pump connection 4 for the subsequent connection to the suction connection of the fuel pump is injected onto the filter element 3 . The region of the two filter elements 2 , 3 lying below the filter cloth web 1 forms the subsequent carrier of the fuel filter 5 .

[0031] ...

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Abstract

The invention relates to a fuel filter 5 and to a process for producing a fuel filter, the fuel filter consisting of a filter fabric 1, a support body 2, 3 which consists of plastic and has a pump connection stub 4 attached thereto, the support body consisting of a first filter part 2 and a second filter part 3, the two filter parts 2, 3 each having a peripheral edge 8, 9 which accommodates a filter fabric 1, and connecting elements 15, 16, 18-22 being arranged on the two filter parts 2, 3 such that, when the two filter parts 2, 3 are adjoined, the surfaces 6, 7 of the two filter parts 2, 3 facing away from the filter fabric 1 come to rest on one another, such that the connecting elements 15, 16, 18-22 of the two filter parts 2, 3 interact with one another.

Description

technical field [0001] The subject of the invention is a fuel filter consisting of a filter cloth and a support body made of plastic and a pump connection arranged on the support body, as well as a method for producing a fuel filter, in which the support body injects Injection molding (anspritzen) onto the filter cloth and the filter cloth is then folded into the final shape. The fuel filter is used for filtering liquid fuel, preferably as a pre-pump filter of a fuel pump in a fuel tank. Background technique [0002] Such a fuel filter is known from EP 0 400 170 A1. First punch out the filter cloth to the outer dimension. At the same time, the suction opening is punched out in the area of ​​the pump connection. Next, the filter cloth is inserted into an injection molding machine, and the carrier body with the pump connection is injection molded. After removal from the injection molding machine, the filter cloth is folded around the carrier into its final shape and welded...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D35/027
CPCB01D35/0273B01D29/111B01D2201/4084B01D29/15B01D35/027B01D39/00
Inventor 奥托·科尔斯特爱德华-西格弗里德·桑登
Owner CONTINENTAL AUTOMOTIVE GMBH
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