Indoor Unit Control Box Layout for Separate AC Wiring Entry
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Solution Overview
Problem
Conventional air conditioning devices with ceiling-embedded duct type indoor units face challenges in individually leading strong and weak electricity wiring into a control box, especially when the control box is inverted, which can lead to noise interference and complicates wiring connections.
Innovation Solution
The indoor unit design includes a casing with adjustable flow ports and specifically formed leading ports on the control box's sides to allow individual entry of strong and weak electricity wiring, even when the control box is inverted, using guide paths and terminal blocks to facilitate easy wiring connections and reduce noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the control box is inverted to enable back surface suction configuration, then the indoor unit can achieve second configuration for air suction, but individual leading of strong and weak electricity wiring into the control box becomes difficult
Solution Approach 1:
The patent divides the wiring leading function into two separate locations: the casing is provided with first leading ports for receiving external wiring, and the control box is provided with second leading ports for transmitting wiring to components inside. This segmentation allows wiring to be led individually regardless of the control box orientation, resolving the contradiction between configuration adaptability and wiring ease.
Solution Approach 2:
The patent introduces an intermediary wiring path through the casing structure. External wiring is first received by first leading ports on the casing, then transmitted to the control box through second leading ports. This intermediary path decouples the wiring leading function from the control box orientation, enabling both front and back surface suction configurations while maintaining easy wiring access.
2Device complexity
If strong and weak electricity wiring are led through one common port, then the device structure is simplified, but noise interference occurs between wiring types
Solution Approach 1:
The patent segments the wiring entry points into separate first leading ports on the casing and separate second leading ports on the control box. This spatial segmentation allows strong and weak electricity wiring to be led through different ports, eliminating noise interference while maintaining clear wiring paths and avoiding complex routing within a single port.
Solution Approach 2:
The patent applies local quality by providing specific leading ports at different locations on the casing and control box. The first leading ports are positioned on the casing exterior, while second leading ports are positioned on the control box, creating localized wiring access points that enable separate routing of strong and weak electricity wiring to minimize electromagnetic interference.
3Adaptability or versatility
If the inspection port of the control box faces the inside of the casing, then the first configuration (lower surface suction) is enabled, but access to the control box interior becomes difficult
Solution Approach 1:
The patent segments the access function by providing separate first leading ports on the casing and second leading ports on the control box. This segmentation allows the inspection port to be oriented toward the casing interior for configuration compatibility, while wiring access is facilitated through the separately positioned leading ports, maintaining ease of repair without compromising configuration adaptability.
Data Source
AI summary
An indoor unit of an air conditioning system is provided. The indoor unit includes a fan, a control box that includes an inspection port on a first side surface, and a casing that houses the fan and the control box. The casing includes a first flow port in a bottom surface of the casing, a second flow port in a first side surface of the casing, and an opening opposed to the inspection port in a second side surface of the casing. The control box comprises a first leading port on each of a second side surface and a third side surface of the control box, the second side surface and the third side surface are opposed to each other and adjacent to the first side surface, and the first leading ports lead external wirings into the control box.