Apparatus for discharging water in exhaust fluid and silencer for fuel cell vehicle

Patent metadata

Field	Value
Publication number	US-10865673-B2
Application number	US-202016843167-A
Country	US
Kind code	B2
Filing date	Apr 8, 2020
Priority date	Dec 15, 2016
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

An apparatus for discharging water in exhaust fluid is disclosed. The apparatus includes a body having an inlet disposed on an exhaust path for exhausting exhaust fluid exhausted from a fuel cell stack to the outside and through which the exhaust fluid is introduced, an outlet communicating with the outside, an interior space allowing the inlet and the outlet to communicate each other, and a discharge passage communicating with the outside to discharge water in the interior space. The apparatus further includes a first resistance unit disposed on a flow path along which the exhaust fluid flows in the interior space and having first fine holes through which at least a portion of the exhaust fluid passes, and a second resistance unit disposed on a discharge path along which the water in the interior space is discharged through the discharge passage and having second fine holes through which the water passes.

First claim

What is claimed is:

1. A silencer for a fuel cell vehicle, comprising:
a main body having an inlet disposed on an exhaust path for exhausting exhaust fluid exhausted from a fuel cell stack to an outside of the vehicle and through which the exhaust fluid is introduced, an outlet communicating with the outside, and an interior space allowing the inlet and the outlet to communicate each other;
a first filter disposed on a flow path along which the exhaust fluid flows in the interior space of the main body, separating the interior space into a first space that is adjacent to the inlet and a second space that is adjacent to the outlet, and having first fine holes through which at least a portion of the exhaust fluid passes from the first space to the second space, wherein the first fine holes are sized to provide a resistance against passage of water in the exhaust fluid such that at least a portion of the water in the exhaust fluid is separated from the exhaust fluid while the exhaust fluid passes through the first fine holes; and
a noise absorbing unit provided in the second space to reduce noise by the exhaust fluid.

2. The silencer of claim 1 , wherein the main body further includes:
a discharge passage communicating with the outside to discharge the water in the interior space.

3. The silencer of claim 2 , further comprising:
a second filter disposed on a discharge path along which the water in the interior space is discharged through the discharge passage and having second fine holes through which the water passes,
wherein the second fine holes are sized to provide a resistance against passage of the water when the water passes through the second fine holes.

4. The silencer of claim 3 , wherein the second fine holes are sized to allow passage of water when a pressure which the exhaust fluid applies to the water towards the discharge passage is a reference pressure or higher.

5. The silencer of claim 3 , further comprising:
an upper support connected to at least one of inner surfaces of the main body to support an upper side of the first filter, and
a lower support connected to at least one of the inner surfaces of the main body to support a lower side of the first filter.

6. The silencer of claim 5 , wherein the lower support includes an extension extending towards the outlet in a direction away from the inlet,
wherein the first space includes:
a storage space defined by the extension and at least one of the inner surfaces of the main body which faces the extension, wherein the discharge passage is provided on a side that is close to the storage space, and
wherein the water in the interior space is stored in the storage space before being discharged through the discharge passage.

7. The silencer of claim 6 , further comprising:
a baffle unit extending in a direction crossing a flow of the exhaust fluid in the second space to induce collision with the water in the exhaust fluid,
wherein the extension has a connection hole allowing the water dropping to the lower side due to the collision to be introduced into the storage space.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Na Sung Wook
• Park Hun Woo
• Jung Myung Ju
• Park Hyun Young
• Jang Ju Chan
• Jang Jun Ho

Classifications

• Y02E60/50

  Fuel cells · CPC title

• Y02T90/12

  Electric charging stations · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• Y02T10/12

  Improving ICE efficiencies · CPC title