Dual-Cavity Electric Control Box for Sealed Heat Dissipation
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Solution Overview
Problem
Air conditioning systems face challenges in maintaining the airtightness of electric control boxes, leading to potential damage from impurities like water and dust entering through heat dissipation holes, which can compromise the integrity of electronic components.
Innovation Solution
The design incorporates a dual-cavity electric control box with separate air vents and a heat dissipation member, where a cooling fan drives air flow to enhance heat dissipation while maintaining airtightness by using a mounting plate to separate the air flow paths and prevent impurities from entering the mounting cavity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat dissipation hole is defined in the box body to cool down the electric control box, then heat dissipation is improved, but airtightness deteriorates and impurities can enter the mounting cavity
Solution Approach 1:
The mounting cavity is divided into a first cavity and a second cavity by the mounting plate, with the first cavity serving as a heat dissipation chamber and the second cavity as a sealed chamber for electronic components. This segmentation allows the heat dissipation hole to be located only in the first cavity, enabling heat dissipation while maintaining airtightness in the second cavity where electronic components are housed.
Solution Approach 2:
The mounting plate acts as an intermediary structure that separates the heat dissipation function from the electronic component housing function. It creates a barrier that prevents impurities entering through the heat dissipation hole from reaching the electronic components in the second cavity, while still allowing heat to be dissipated from the first cavity.
2Temperature
If a heat dissipation hole is defined in the box body, then heat dissipation is improved, but electronic components may be damaged by entering impurities
Solution Approach 1:
The mounting cavity is segmented into a first cavity for heat dissipation and a second cavity for housing electronic components. The heat dissipation hole is positioned only in the first cavity, creating a physical separation that prevents impurities from reaching the electronic components in the second cavity while maintaining effective heat dissipation.
Solution Approach 2:
The mounting plate serves as a protective intermediary barrier between the heat dissipation hole and the electronic components. It allows the heat dissipation hole to exist in the first cavity without exposing the electronic components in the second cavity to harmful impurities that may enter through the heat dissipation hole.
3Reliability
If air tightness is maintained in the control box, then electronic components are protected, but heat dissipation deteriorates
Solution Approach 1:
The mounting cavity is divided into a first cavity with heat dissipation functionality (containing the heat dissipation hole) and a second cavity with sealed airtight construction for housing electronic components. This segmentation enables the box body to maintain overall airtightness for protecting electronic components while the first cavity provides dedicated heat dissipation pathways.
Solution Approach 2:
The mounting plate acts as an intermediary that allows the box body to simultaneously achieve airtightness and heat dissipation. It creates a separated first cavity that can have heat dissipation holes without compromising the airtightness of the second cavity, thus enabling both functions to coexist.
4Reliability
If the mounting cavity is sealed to protect electronic components, then reliability is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The mounting cavity is segmented into a first cavity that can be opened for heat dissipation and a second cavity that remains sealed to protect electronic components. This segmentation allows the sealed second cavity to protect electronic components from impurities while the first cavity provides heat dissipation pathways through its heat dissipation hole.
Solution Approach 2:
The mounting plate serves as a protective intermediary that enables the second cavity to remain sealed and protected while the first cavity handles heat dissipation. This intermediary structure allows the system to maintain protection of electronic components while providing adequate heat dissipation capability through the separated first cavity.
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 effectively cools the electric control box while maintaining airtightness, protecting electronic components from damage and improving the overall efficiency of heat dissipation within the air conditioning system.
Implementation Method 1
a cooling fan, configured to supply air to drive air in the first cavity to flow into the second cavity through the first air vent
Implementation Method 2
an electronic element, received in the second cavity and thermal-conductively connected to the heat dissipation member
Implementation Method 3
a heat dissipation member, at least partially received in the first cavity
Data Source
AI summary
The electric control box includes a box body, a mounting plate, a heat sink, an electronic component and a heat dissipation fan. The box body is provided with a mounting cavity. The mounting board is arranged in the mounting cavity to form a first chamber and a second chamber located on two sides of the mounting board. A first air vent and a second air vent are arranged on the mounting board and are spaced apart. The first air vent and the second air vent are connected to the first chamber and the second chamber. The heat sink is at least partially arranged in the first chamber. The electronic component is arranged in the second chamber and in thermally conductive connection with the heat sink. The heat dissipation fan is used for blowing air and from the first chamber into the second chamber via the first air vent.