Mounting and securing air conditioner (AC) unit and AC cage being wall mounted on railway instrument house
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Solution Overview
Problem
Current air conditioner mounting and security solutions for railway communication and signal control houses are inefficient, lack maintenance accessibility, and are vulnerable to vandalism, with existing designs requiring cuts in insulation and plywood, necessitating multiple locks, and requiring personnel inside the house for installation and removal.
Innovation Solution
A mounting assembly featuring a threaded part, such as a rivet nut, integrated into the outer metal shell layer of the railway instrument house wall, allowing for secure and efficient installation and removal of air conditioner units from outside, along with an AC unit cage that has side and front doors locked by bolts, reducing the need for multiple locks and allowing maintenance without disassembling the cage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional mounting methods are used, then the AC unit can be installed, but installation and removal require personnel inside the house and multiple locks, increasing complexity and time
Solution Approach 1:
The mounting system is segmented into modular components: threaded parts integrated into the outer shell, mounting brackets with standardized holes, and cage sections with individual doors. This segmentation allows independent installation of each component from outside, eliminating the need for personnel inside the house and reducing overall system complexity.
Solution Approach 2:
Threaded parts are pre-integrated into the outer shell during manufacturing, and mounting brackets are pre-drilled with standardized hole patterns. This preliminary preparation enables quick installation from outside without requiring interior access or complex on-site assembly procedures.
2Reliability
If traditional security methods are used, then the AC unit is protected, but multiple locks are required and maintenance requires disassembling the cage
Solution Approach 1:
The cage is divided into sections with individual doors that can be opened independently. Each door has its own locking mechanism, allowing maintenance personnel to access specific components without disassembling the entire cage structure, thus maintaining security while facilitating easy maintenance.
Solution Approach 2:
The cage doors are designed to be dynamically accessible - locked during operation for security, but easily openable during maintenance. The side doors can be opened to provide access to the AC unit while the front door remains locked, creating a flexible security-maintenance balance.
3Ease of manufacture
If cuts are made in insulation and plywood for mounting, then the AC unit can be installed, but the integrity of the house structure is compromised
Solution Approach 1:
The mounting system uses separate threaded parts that attach to the outer shell without penetrating through the insulation and plywood layers. This segmentation allows the mounting function to be added without compromising the integrity of the house's thermal and structural layers.
Solution Approach 2:
Threaded parts serve as an intermediary element between the outer shell and the AC unit mounting brackets. These threaded inserts provide secure attachment points without requiring cuts or penetrations through the insulation and plywood, thus maintaining house structure integrity while enabling easy installation.
4Ease of operation
If residential wall mount units are used, then installation is simple, but the solution is temporary and unsatisfactory for railway applications
Solution Approach 1:
The mounting system uses standardized, modular components with precise hole patterns and threaded connections that provide both the installation simplicity of residential units and the robustness required for railway applications. The segmented design allows for reliable long-term service while maintaining ease of installation and future replacement.
Data Source
AI summary
A mounting assembly for mounting a wall mounted air conditioner (AC) unit on a railway instrument house is provided. The mounting assembly may include a house wall including an outer metal shell layer, a middle insulation layer and an inner plywood layer. The mounting assembly may further include a threaded part coupled to the outer metal shell layer. The threaded part is configured to receive an AC mounting hardware of the wall mounted air conditioner (AC) unit to secure the wall mounted air conditioner (AC) unit to the house wall such that the threaded part enables the wall mounted air conditioner (AC) unit to be installed or removed from outside of the railway instrument house. The mounting assembly may further include an AC unit cage for protecting the wall mounted air conditioner (AC) unit. The AC unit cage has at least two side doors and a front door such that each side door of the at least two side doors is locked within the front door by corresponding bolts or a quick lock. The AC unit cage is configured for mounting on the house wall.