Bonding Head Heater Assembly With Porous Gas Cooling
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Solution Overview
Problem
Existing bonding head heater assemblies fail to uniformly cool the entire region of the heater, leading to temperature differences and potential thermal deformation and reduced lifespan.
Innovation Solution
A heater assembly with a porous block that distributes cooling gas uniformly across different heat generation regions, using varying porosity and thickness configurations to ensure consistent cooling, and optionally includes a baffle to further regulate gas flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling channels of different lengths are used to cool the heater, then the heater can be cooled, but the cooling is not uniform across the entire heater region
Solution Approach 1:
The patent applies porous material (porous block) as a cooling gas distributor to replace the traditional cooling channel structure. The porous block has uniformly distributed pores throughout its volume, allowing cooling gas to be distributed evenly across all heat generation regions of the heater simultaneously, achieving uniform cooling without the need for channels of different lengths
Solution Approach 2:
The porous block provides localized cooling gas distribution to each heat generation region according to its specific thermal requirements. Each region receives cooling gas through the porous structure at the appropriate location, enabling differentiated local cooling while maintaining overall uniformity through the homogeneous porous material structure
2Temperature
If cooling gas is sprayed directly to the heater, then the heater can be cooled, but temperature differences are generated in different regions
Solution Approach 1:
The porous block serves as an intermediary device between the cooling gas source and the heater. It receives cooling gas from the cooling gas inlet and distributes it uniformly across all heat generation regions through its porous structure, preventing direct localized spraying that would cause temperature differences and thermal deformation
Solution Approach 2:
The porous block is made of homogeneous material with uniformly distributed pores throughout its structure. This homogeneity ensures that cooling gas is distributed evenly to all regions of the heater, preventing temperature differences and the associated reliability issues such as thermal deformation and reduced lifespan
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
The solution achieves uniform cooling of the entire heater region, preventing temperature differences and thermal damage, thereby extending the heater's lifespan.
Implementation Method 1
a porous block disposed in the accommodation space of the housing... the porous block may be configured to pass a cooling gas received from the cooling gas inlet and supply a plurality of cooling gas flows of the cooling gas to the plurality of heat generation regions, respectively
Implementation Method 2
The first porous member may have more pores per unit volume than the second porous member... supply a plurality of cooling gas flows of the cooling gas to the plurality of heat generation regions, respectively
Data Source
AI summary
A heater assembly includes a housing having an accommodation space therein and having a cooling gas inlet communicating with the accommodation space, a heater coupled to the housing, and a porous block disposed in the accommodation space.