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Method of applying lubrication to legs of a hairpin tube

A hairpin tube and leg technology, which can be used in engine lubrication, lubricating parts, hairdressing equipment, etc., and can solve problems such as time-consuming

Active Publication Date: 2014-04-09
BRAZEWAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is very time consuming and disadvantageous

Method used

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  • Method of applying lubrication to legs of a hairpin tube
  • Method of applying lubrication to legs of a hairpin tube
  • Method of applying lubrication to legs of a hairpin tube

Examples

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Embodiment Construction

[0019] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0020] The present disclosure provides methods and devices for applying lubricant to hairpins to be expanded. In particular, the present disclosure relates to methods and apparatus for providing an atomized, metered dose of lubricant to a hairpin in an automated fashion. Because the dosage of lubricant can be tightly controlled, the amount of lubricant required prior to expansion is greatly reduced, which greatly reduces the costs associated with producing coated (lubricated) hairpins. Additionally, although the amount of lubricant is greatly reduced, the reduced amount of lubricant does not negatively affect the expansion process. It should be understood that the present disclosure, while primarily concerned with the manufacture and production of hairpin tubes, should not be limited thereto. That is, the present disclosure applies to the manufacture and production of a...

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PUM

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Abstract

A method and system for manufacturing a hairpin tube. The method includes cutting a coil of tube to provide a plurality of lengths of tubes, and bending each length of tube to form a plurality of hairpin tubes. A lubricant is then atomized with an injector nozzle, and injected into at least one open end of each hairpin tube. After lubricating the hairpin tubes, the legs of each hairpin tube are expanded.

Description

technical field [0001] The present disclosure relates to a method and apparatus for applying lubricant to the legs of a hairpin. Background technique [0002] This section provides background information related to the present disclosure which is not necessarily prior art. [0003] HVAC systems use aluminum or copper pipes to carry heat exchange fluid. In the evaporator or condenser of an HVAC system, the tubes may be arranged to travel back and forth in a serpentine pattern. At the bends of the serpentine pattern, the hairpins of the tube that are present are usually fabricated separately and then brazed to shorter sections of the tube. The hairpins are expanded for proper tube to fin contact. Additionally, in order to ensure that the hairpin portion can be coupled to a shorter section of tube, the ends of the hairpin portion are expanded by using an expansion device. [0004] During the expansion of the hairpin, a lubricant is required to assist in the expansion proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16N7/32F16N27/00F16N21/02A45D8/14
CPCF16N27/00F16N21/02F16N7/32A45D8/14Y10T29/49391Y10T83/263B21D37/18B21D41/02B21D53/02B21J3/00
Inventor 大卫·W·斯克日普恰克维卡斯·索马尼布赖恩·J·克里斯藤
Owner BRAZEWAY