Mesh filter for fuel supply system of vehicle

Patent metadata

Field	Value
Publication number	US-12220653-B2
Application number	US-202318126569-A
Country	US
Kind code	B2
Filing date	Mar 27, 2023
Priority date	Jul 24, 2019
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

A mesh filter for a fuel system of a vehicle may include: a frame for maintaining a shape thereof; a mesh member coupled to the frame so as to remove foreign substances contained in fuel, where the mesh member includes a first mesh member and a second mesh member; and an opening unit for opening and closing a fuel path in the first mesh member. In particular, the second mesh member has a mesh size smaller than a mesh size of the first mesh member such that the mesh filter inhibits clogging of the mesh filter with paraffin wax.

First claim

What is claimed is:

1. A mesh filter for a fuel system of a vehicle, comprising:
a frame for maintaining a shape thereof;
a mesh member coupled to the frame and configured to remove foreign substances contained in fuel, wherein the mesh member includes: a first mesh member, and a second mesh member, where the second mesh member has a mesh size smaller than a mesh size of the first mesh member; and
an opening unit for opening and closing a fuel path in the first mesh member,
wherein the opening unit includes:
a temperature-sensitive switch, which is turned on/off depending on a temperature of the fuel; and
a dielectric elastomer actuator mounted on a lower end of the frame and configured to open the fuel path in the first mesh member upon application of power from a battery through the temperature-sensitive switch and to close the fuel path in the first mesh member upon interruption of application of the power from the battery.

2. The mesh filter of claim 1 , wherein the first mesh member is positioned at a lower end of the mesh filter.

3. The mesh filter of claim 1 , wherein the first mesh member is disposed at a bottom area of the mesh filter.

4. The mesh filter of claim 2 , wherein an introduction pipe extends into an inside of the mesh filter through an upper end of the frame, and the fuel that has passed through the mesh member is introduced into the introduction pipe.

5. The mesh filter of claim 1 , wherein the mesh size of the first mesh member is in a range of 200 μm to 400 μm.

6. The mesh filter of claim 5 , wherein the first mesh member has a mesh size greater than 200 μm.

7. The mesh filter of claim 5 , wherein the first mesh member has a mesh size of less than 400 μm.

8. The mesh filter of claim 1 , wherein the dielectric elastomer actuator includes:
a plate-shaped rubber valve for selectively opening or closing the fuel path in the first mesh member by deformation thereof; and
compliant electrodes attached to both surfaces of the plate-shaped rubber valve, the compliant electrodes serving to selectively deform the plate-shaped rubber valve so as to open and close the fuel path in the first mesh member by application and interruption of the power from the battery via the temperature-sensitive switch.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp

Inventors

• Lee Hyun No
• Kim Dong Lim

Classifications

• B01D43/00

  Separating particles from liquids, or liquids from solids, otherwise than by sedimentation or filtration (flotation processes B03D1/00; drying solid materials or objects F26B) · CPC title

• B01D35/30

  Filter housing constructions · CPC title

• B60K2015/03236

  characterised by special filters, the mounting thereof · CPC title

• B60K15/03

  Fuel tanks · CPC title

• F02M37/50

  Filters arranged in or on fuel tanks · CPC title