Control Signal Routing Connector Layout to Prevent HVAC Wiring Errors

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Solution Overview

Problem

The routing of control signals in HVAC systems is prone to wiring errors, which can lead to injuries, equipment damage, and unsafe operating conditions due to manual electrical connections.

Innovation Solution

A control signal routing apparatus featuring a substrate with multiple electrical conductors and routing connectors, each with multiple terminals, to systematically route control signals through a series of switches, reducing the likelihood of human error.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual electrical connections are used to route control signals through pressure switches, then the system can be assembled and repaired with flexible wiring configurations, but wiring errors occur leading to injuries, equipment damage, and unsafe operating conditions

Engineering Contradiction:
Improveflexibility in wiring configurationVSAvoidwiring error prevention
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The routing connector is divided into multiple portions, with each portion adapted to receive a specific plug connector (e.g., pressure switches, contactors). This segmentation allows flexible configuration while ensuring proper connections through dedicated interfaces for each component type.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The routing connector serves as an intermediary device between the control signal source and various switches/contactors. It provides a standardized interface that eliminates direct manual wiring between components, thereby preventing wiring errors while maintaining configuration flexibility.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If hand-wired electrical connections are used for control signal routing, then custom wiring configurations can be created for different system layouts, but the complexity and risk of wiring errors increase

Engineering Contradiction:
Improvecustom wiring configuration capabilityVSAvoidwiring error risk
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The routing connector is designed with multiple portions that can accommodate different plug connectors (pressure switches, contactors, control devices). This universal interface allows the same routing connector to serve various system configurations without requiring custom wiring for each setup.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The routing connector is pre-configured with multiple portions and electrical terminals before installation. This preliminary preparation ensures that the correct connections are established in advance, eliminating the need for complex on-site wiring decisions and reducing the risk of errors during installation.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If multiple pressure switches are used to route control signals, then safety controls can be implemented, but the number of manual connections and potential wiring errors increases

Engineering Contradiction:
Improvesafety control implementationVSAvoidnumber of electrical connections
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

Multiple pressure switches and control devices are merged into a single routing connector assembly through standardized plug connections. This consolidation reduces the number of separate manual wiring connections while maintaining all necessary safety controls through the integrated connector system.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS9281577B2Control signal routing apparatus
Publication Date: 2016.03.08 LENNOX IND INC
  • US9281577B2 patent drawing
  • US9281577B2 patent drawing
  • US9281577B2 patent drawing

AI summary

A disclosed control signal routing apparatus includes a substrate, a routing connector having multiple electrical terminals and multiple portions, and multiple electrical conductors on or in the substrate. The terminals are arranged within a housing cavity. The conductors connect terminals of different portions of the routing connector. Each portion of the routing connector is adapted to receive a plug connector and includes two or more terminals. Another embodiment of the apparatus includes the substrate, multiple routing connectors, and a first and second set of conductor(s) on or in the substrate. Each routing connector includes a first, a second, and a third terminals, and two portions each adapted to receive a plug connector. The first set of conductor(s) connects the first terminals of routing connectors and sequential next routing connectors. The second set of conductor(s) connects third terminals of routing connectors to second terminals of sequential next routing connectors.