Heat exchange arrangement

Patent 4056142 Issued on November 1, 1977. Estimated Expiration Date:

November 1, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

1020480

3354061

3483101

3560365

3798142

Heat exchange arrangement Patent #: 3951207
Issued on: 04/20/1976
Inventor: Baumann , et al.

Inventors

Assignee

GEA Luftkuhlergesellschaft Happel GmbH & Co. KG

Application

No. 05/643509 filed on 12/22/1975

US Classes:

165/133, WITH COATED, ROUGHENED OR POLISHED SURFACE165/134.1, WITH PROTECTOR OR PROTECTIVE AGENT204/196.06, With measuring, testing, or sensing means204/196.37Vessel protected (e.g., steam boiler, etc.)

Examiners

Primary: Lazarus, Ronald H.
Assistant: Richter, Sheldon J.

Attorney, Agent or Firm

Striker; Michael J.

Foreign Application Priority Data

1972-09-09 DT

Abstract

A heat exchange arrangement for use with chemically aggressive fluids has a source of direct current. Walls are provided which define a flow path for a fluid which is to undergo a temperature change, and at least a part of the walls is composed of a metallic material and connected to one of the terminals of the current source. The walls also form a chamber constituting a part of the flow path and having an opening which is closed by a cover. The cover is constituted as an electrode which is arranged in the flow path and is not in direct contact with the metallic part of the wall. This electrode is connected to the other terminal of the current source. The construction is effective for forming a protective coating on at least the metallic part of the wall when the current source is activated and fluid flows in the flow path. This protective coating prevents chemical attack of the metal by the fluid.