Heat exchanger having a heat transfer block with a screen arranged thereon

Patent metadata

Field	Value
Publication number	US-10107571-B2
Application number	US-201514852929-A
Country	US
Kind code	B2
Filing date	Sep 14, 2015
Priority date	Sep 12, 2014
Publication date	Oct 23, 2018
Grant date	Oct 23, 2018

Abstract

A gas-cooled heat exchanger, in particular a direct intercooler, for cooling of a fluid which flows through the heat exchanger, with a heat transfer block featuring a plurality of flow channels, with a first collection chamber and a second collection chamber. The collection chambers are fluidically connected with one another via the flow channels and the outside of the heat transfer block can be perfused by gas. In the direction of the perfusion, a screen is arranged in front of the heat transfer block for the prevention of flow in certain areas around the flow channels of the screen. One of the collection chambers features a vent for discharge of condensate of the fluid which can be sealed from or released into the surrounding area of the heat exchanger.

First claim

What is claimed is:

1. A gas-cooled heat exchanger for cooling of a fluid flowing through the heat exchanger, the heat exchanger comprising:
a heat transfer block having a plurality of flow channels, an outside of the heat transfer block being perfused by a gas;
a first collection chamber;
a second collection chamber positioned downstream of the first collection chamber, the first and second collection chambers being fluidly connected with one another via the flow channels,
a screen being arranged on the heat transfer block in a direction of the perfusion in front of the heat transfer block for prevention of flow of the gas around at least one of the flow channels;
a vent being arranged in the second collection chamber for discharge of condensate of the fluid into the surrounding area of the heat exchanger,
a first mounting device provided on the first collection chamber and a second mounting device provided on the second collection chamber, and
a retaining rod having a first end fixed to the first mounting device and a second end fixed to the second mounting device,
wherein the screen is angled along a length thereof, such that the screen has a vertex, a first sloped surface and a second sloped surface, the first sloped surface and the second sloped surface extending from opposing sides of the vertex in a direction towards the heat transfer block, and wherein the distal ends of the first sloped surface and the second sloped surface are positioned closer to the heat transfer block than the vertex, and
wherein an inner surface of the vertex of the screen is positioned on the retaining rod.

2. The heat exchanger according to claim 1 , wherein the second collection chamber is situated downstream from the heat transfer block in a flow direction of the fluid.

3. The heat exchanger according to claim 1 , wherein the vent is arranged at a lower end of the second collection chamber and is spaced at a distance from a lowest positioned flow channel of the heat transfer block.

4. The heat exchanger according to claim 1 , wherein the vent is a check valve, wherein a fluid stream is releasable from the second collection chamber into the surrounding area through the vent.

5. The heat exchanger according to claim 1 , wherein the second collection chamber has a funnel-shaped inner contour that forms a slope in a direction towards the vent.

6. The heat exchanger according to claim 1 , wherein the vent is controllable as a function of a pressure difference between pressure in the second collection chamber in which the vent is located and pressure outside of the second collection chamber, wherein a pressure sensor is provided to sense the pressure in the second collection chamber and a pressure sensor is provided to sense the pressure outside of the second collection chamber.

7. The heat exchanger according to claim 1 , wherein the screen covers at least a lowest positioned flow channel of the heat transfer block or the lowest positioned flow channel and a flow channel positioned directly above the lowest positioned flow channel.

8. The heat exchanger according to claim 1 , wherein the screen reduces a cooling performance of the heat exchanger by between 40% and 95%.

9. The heat exchanger according to claim 1 , wherein the screen is fused or clipped or bonded or screwed together or clamped with the heat exchanger.

10. The heat exchanger according to claim 1 , wherein the gas-cooled heat exchanger is a direct intercooler.

11. The heat exchanger according to claim 1 , wherein the first sloped surface is sloped towards the heat transfer block in an upward direction and the second sloped surface is sloped towards the heat transfer block in a downward direction.

12. The heat exchanger according to claim 6 , wherein the vent is a check valve.

Assignees

• Mahle Int Gmbh

Inventors

• Augenstein Claus
• Oberlechner Christian
• Reck Markus
• Reeb Wolfgang
• Weise Stefan

Classifications

• F28D2021/0082

  Charged air coolers · CPC title

• F28F19/002

  by using inserts or attachments · CPC title

• F28F2009/222

  Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit · CPC title

• F28F19/006

  Preventing deposits of ice · CPC title

• F28F27/00

  Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus (control arrangements in general G05) · CPC title