HVAC Setpoint Dial Assembly for Simpler Thermostat Control
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Solution Overview
Problem
HVAC controllers often have complex designs with numerous parts, making assembly difficult and costly, necessitating a simpler and more cost-effective solution.
Innovation Solution
The design incorporates a simpler HVAC controller with a rotatable lens dial, a set point operator, and a mechanical movement to electrical signal converter, reducing the number of parts and using snap-fitted components to streamline assembly and manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional HVAC controller designs are used, then functionality is maintained, but device complexity and manufacturing cost increase due to numerous individual parts
Solution Approach 1:
The patent merges multiple functional components into integrated assemblies. The lens dial is integrally molded with the set point indicator as a single part. The upper housing integrates the scale plate, thermometer mounting, and lens dial mounting into one structure. The set point operator combines the annular portion, shaft portion, and engagement portion into a single component that performs multiple functions (rotational movement, electrical signal conversion, and engagement with the lens dial).
2Ease of manufacture
If traditional HVAC controller designs with many parts are used, then functionality is maintained, but ease of manufacture deteriorates due to complex assembly processes
Solution Approach 1:
Multiple components are merged into integrally molded parts. The lens dial and set point indicator are formed as one piece. The upper housing integrates multiple mounting functions into a single structure. The set point operator is a single component that performs multiple functions, eliminating the need for separate assembly of multiple smaller parts.
Solution Approach 2:
The controller is segmented into modular assemblies that can be manufactured separately and then easily assembled. The main segments are: (1) the integrally molded lens dial with set point indicator, (2) the upper housing with integrated scale plate and thermometer, (3) the set point operator assembly, and (4) the circuit board with centrally located potentiometer. This modular segmentation simplifies both manufacturing and assembly.
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 approach results in a more efficient and cost-effective HVAC controller with fewer parts, simplifying assembly and reducing production costs while maintaining functionality.
Implementation Method 1
a centrally located mechanical movement to electrical signal converter. The thermostat includes structure adapted to convert movement at the lens dial periphery into movement at the centrally located mechanical movement to electrical signal converter
Data Source
AI summary
An HVAC controller may include an upper housing having a front and a back, the back including a center. A lens dial including an engagement portion may be rotatably secured relative to the upper housing. A set point operator may include a first portion that is disposed about the upper housing center as well as a second portion that is adapted to interact with the lens dial engagement portion. A mechanical movement to electrical signal converter such as a potentiometer may be disposed within the HVAC controller such that the first portion of the set point operator communicates with the potentiometer.