Vehicle HVAC Sliding Door Rail and Seal Assembly
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Solution Overview
Problem
Conventional vehicle air conditioners face difficulties in assembling the sliding-type door due to the lack of space within the air conditioning case.
Innovation Solution
The air conditioner design includes a rail part in the air conditioning case to guide the sliding door, and a separate assembly that forms a sealing surface with the door, allowing for easier assembly and preventing air leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sliding-type door is used to control the air passage opening degree, then the temperature control precision is improved, but the assembly difficulty increases due to lack of space in the air conditioning case
Solution Approach 1:
The air conditioning case is divided into multiple sections with separate air passages for cold and warm air. The sliding door is segmented to control different air passages independently, allowing precise temperature control while simplifying assembly through modular construction
Solution Approach 2:
The sliding door is designed to be nested within the air conditioning case structure, with the door body fitting into grooves and channels already formed in the case. This nesting approach eliminates the need for separate assembly space while maintaining the door's sliding functionality for precise air passage control
2Volume of moving object
If the sliding door is made thin to reduce space occupation, then the space efficiency is improved, but the sealing performance deteriorates
Solution Approach 1:
The sliding door utilizes thin film sealing elements and flexible sealing strips attached to the door edges. These thin sealing components maintain the door's thin profile while providing effective sealing against air leakage, ensuring reliable temperature control without increasing door thickness
Solution Approach 2:
The sealing solution moves from the door thickness dimension to the door edge dimension. Sealing channels and grooves are created in the horizontal plane at the door periphery, allowing thin doors to achieve adequate sealing through extended edge structures rather than increased thickness
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 enhances the assembly process of the door and provides a sealing function, ensuring proper airflow and temperature control within the vehicle.
Implementation Method 1
an evaporator 20 which is a cooling heat exchanger
Implementation Method 2
an indoor condenser 30 which is a heating heat exchanger
Data Source
AI summary
In a structure in which a door and a case sealing part are in surface contact with each other at the downstream side in an air flow direction, an air conditioner for a vehicle that enabling easier assembly of the door is disclosed. The air conditioner includes: an air conditioning case in which an air passage and a plurality of air discharge ports are formed; a cooling heat exchanger and a heating heat exchanger sequentially arranged in the air passage of the air conditioning case in an airflow direction; and a sliding-type door for adjusting the opening degree of the air passage, wherein a rail part is formed in the air conditioning case to guide the sliding of the door, and a separate assembly is coupled to the air conditioning case and is in close contact with the door inserted into the rail part to form a sealing surface.