Heater Core Layout for Vertical Service in Compact HVAC Modules
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Solution Overview
Problem
The existing HVAC systems in vehicles face challenges in servicing the heater core without requiring extensive disassembly of the HVAC module or instrument panel, particularly due to limited horizontal clearance, which complicates the removal and installation of the heater core.
Innovation Solution
The heater core is designed to slide inward and be removed in a vertical direction orthogonal to its insertion, allowing for servicing without horizontal extraction, utilizing a locking rib and elastic material to maintain position and prevent air bypass, enabling vertical servicing within the module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the heater core is removed horizontally from the HVAC module, then the heater core can be serviced, but extensive disassembly of the HVAC module or instrument panel is required and horizontal space equivalent to the length of the heater core is needed
Solution Approach 1:
The heater core is designed to be removable in a vertical direction (Z-axis) rather than the traditional horizontal direction (X-axis). This dimensional change allows the heater core to be extracted through the bottom of the HVAC module without requiring disassembly of the instrument panel or extensive module disassembly, thereby resolving the contradiction between ease of repair and device complexity
2Volume of moving object
If the HVAC module is assembled in a side-to-side configuration, then space is optimized, but the heater core cannot be serviced vertically due to limited horizontal vehicle clearance
Solution Approach 1:
By changing the removal direction from horizontal to vertical, the system allows heater core servicing through the bottom of the module in the Z-axis direction. This enables the HVAC module to be assembled in a compact side-to-side configuration while maintaining full serviceability, as the vertical removal path does not conflict with horizontal vehicle clearance constraints
3Stability of the object's composition
If the heater core is held in position by a locking rib, then the heater core remains stable during normal use, but the heater core cannot be moved for servicing
Solution Approach 1:
The locking rib mechanism is designed to be dynamic rather than static. The locking rib can engage with the supporting cover to secure the heater core in its operational position, but can also be disengaged or overridden to allow the heater core to be moved vertically for servicing. This dynamic characteristic resolves the contradiction between stability during use and movability for maintenance
Data Source
AI summary
A method for servicing a heater core installed in a heating, ventilation, and air-conditioning (HVAC) assembly for a motor vehicle includes removing a sealing attachment from an interfacing connection interfacing with the heater core. The method includes sliding the heater core in a direction of insertion. The method includes disconnecting, from the heater core, the interfacing connection. The method includes removing the heater core in a direction of extraction, the direction of extraction being orthogonal to the direction of insertion.