HEAT EXCHANGER TUBE

• US 20090223656A1
• Filed: 04/20/2006
• Published: 09/10/2009
• Est. Priority Date: 06/06/2005
• Status: Abandoned Application

• Current Assignee: Calsonic Kansei Corporation
• Original Assignee: Calsonic Kansei Corporation
• Inventors: Hiyama, Jinichi, Koyama, Sachio
• Application Number:
  US11/916,738
• Publication Number:
  US 20090223656A1
• Time in Patent Office: Days
• US Class Current: 165/181
• CPC Class Codes: B21C 37/151 Making tubes with multiple passages
• CPC Class Codes: B21C 37/158 Protrusions, e.g. dimples
• CPC Class Codes: F28D 1/0391 a single plate being bent to form one or more conduits
• CPC Class Codes: F28F 1/022 with multiple channels
• CPC Class Codes: F28F 3/044 the deformations being pontual, e.g. dimples
• CPC Class Codes: F28F 3/046 the deformations being linear, e.g. corrugations

Abstract

Disclosed is a heat exchanger tube (10) which is arranged so that air flow passes in an external circumference along a width direction thereof, and in which an internal passage (13) is divided by a partition wall (14) into an upstream side passage (13a) located on the upstream side of an air flow and a downstream side passage (13b) located on the downstream side of the air flow. The partition wall (14) is provided in the location such that a width (W1) of the upstream side passage (13a) is wider and a width (W2) of the downstream side passage (13b) is narrower.

Claims

1. A heat exchanger tube arranged in a direction across an air flow such that air flows in an external circumference along with a width direction of the heat exchange tube, the heat exchanger tube comprising:

an upstream side passage located on an upstream side of the air flow;

a downstream side passage located on a downstream side of the air flow; and

a partition wall for partitioning the upstream side passage and the downstream side passage,

wherein the partition wall is arranged such that a width of the upstream side passage is larger than a width of the downstream side passage.

2. The heat exchanger tube according to claim 1, wherein the upstream side passage is provided with a projecting portion which projects from at least one side of an external wall portion.

3. The heat exchanger tube according to claim 2, wherein the projecting portions are provided at a plurality of locations with intervals therebetween along a longitudinal direction.

4. The heat exchanger tube according to claim 3, wherein the projecting portion is formed into a rectangular shape.

5. The heat exchanger tube according to claim 3, wherein the projecting portion is formed into an elliptic shape.