Soldering Blower Baffle Layout for Uniform Hot Air Flow
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Solution Overview
Problem
Conventional soldering apparatuses experience nonuniform gas flow rates through blowing ports, leading to inadequate dispersion of hot air and increased pressure loss, which hinders uniform heating of electronic components on circuit boards.
Innovation Solution
The soldering apparatus incorporates a baffle plate configuration with a circular arc shape and strategically positioned second baffle plate to guide gas flow uniformly through the blowing ports, reducing pressure loss and ensuring consistent air distribution across the circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If gas is blown through a hole in the blower case without dispersion, then the structure is simple, but the flow rate of hot air blown through panel holes becomes nonuniform
Solution Approach 1:
A baffle plate is introduced as an intermediary component between the blower case and the panel. This baffle plate receives the gas flow from the blower and redistributes it uniformly across multiple small holes in the panel, transforming the nonuniform flow into uniform flow without requiring complex internal structures in the blower case itself.
2Manufacturing precision
If a baffle plate is added to disperse the gas flow, then the hot air flow rate uniformity improves, but pressure loss remarkably increases
Solution Approach 1:
The baffle plate is designed with a circular arc shape that matches the curvature of the gas flow from the blower. This curved geometry allows the gas to follow the natural flow path without abrupt changes in direction, reducing turbulence and pressure loss while still achieving uniform distribution across the panel holes.
3Device complexity
If the gas flow rate through the blower hole is nonuniform, then the blower structure is simple, but the hot air cannot be uniformly blown to the object to be heated
Solution Approach 1:
The single large hole in the blower case is segmented into multiple smaller holes in the panel. By dividing the gas flow path into multiple smaller channels, the system achieves more uniform flow distribution and better heating uniformity, while the segmentation occurs in the panel rather than complicating the blower case structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration achieves a more uniform gas flow rate across all positions in the blowing ports, enhancing the uniformity of hot air distribution and reducing pressure loss, thereby improving the soldering process efficiency.
Implementation Method 1
when the blade rotates in the blower, wind caused by the rotation of the blade hits the inner surface of the case, has a flowing direction changed by the inner surface, and is blown through the hole formed in the vertical surface to outside of the case
Implementation Method 2
this wind is dispersed by the baffle plate, passes through the heater and the large number of small holes formed in the panel, and is blown as hot air to an object to be heated
Implementation Method 3
passes through the heater and the large number of small holes formed in the panel, and is blown as hot air to an object to be heated
Data Source
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AI summary
A soldering apparatus is provided which is capable of blowing gas through a first blowing port (334) more uniformly than a conventional apparatus, at each position in the first blowing port. The soldering apparatus includes a blowing unit (300) that supplies gas to an object. The blowing unit (300) has a case (320) including a first blowing chamber (322), a fan (302) housed in the first blowing chamber to blow the gas in a centrifugal direction, a first baffle plate (380), and a heater (308) that heats the gas or a cooling unit (309) that cools the gas. The case (320) includes a first wall (326) that faces the fan in an axial direction of the fan, a second wall (328) that faces the first wall, and an inner wall (330) connecting the first wall and the second wall, the first wall, the second wall and the inner wall define the first blowing chamber (322). The first blowing port (334) is formed in the first wall (326), and the first baffle plate (380) is disposed in the first blowing chamber to guide part of the gas blown from the fan (302) to the first blowing port (334).