Selectable Hard Start Capacitor Kit for Multi-Unit AC Replacement

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Solution Overview

Problem

Existing hard start capacitor replacement units are not adaptable to multiple air conditioning and cooling units, requiring repairmen to carry multiple kits or return to a shop for correct replacement parts, leading to inefficiencies and delays in repairs.

Innovation Solution

A hard start capacitor replacement unit with selectable capacitance values, designed to be adaptable to various air conditioning units, featuring a cylindrical container with multiple capacitors and a cover with common and capacitance value terminals, allowing for configuration at the repair site to match the required capacitance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If repairmen carry multiple hard start kits for different capacitance values, then they can service various air conditioning units, but the device complexity and portability are reduced

Engineering Contradiction:

Improveadaptability to multiple air conditioning unitsVSAvoidcomplexity of carrying multiple kits

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The hard start kit is designed with a universal structure that can accommodate multiple capacitance values within a single unit. The container holds several capacitors of different capacitances, and the cover provides multiple terminals that can be configured to connect any desired capacitor to the motor terminals, making one kit suitable for servicing various air conditioning units with different capacitance requirements.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The hard start kit is divided into separable components: a container holding multiple capacitors and a cover with multiple terminals. This segmentation allows the user to select and connect the appropriate capacitor based on the specific air conditioning unit being serviced, while keeping all components within a single portable kit.

Inventive Principle:

Principle #1Segmentation

2Reliability

If repairmen return to a shop for correct replacement parts, then they ensure proper capacitance matching, but the loss of time and productivity increase

Engineering Contradiction:

Improvecorrect capacitance matchingVSAvoidtime for repair completion

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The correct capacitor is selected and connected before the repair is completed. The kit contains multiple capacitors of different capacitance values, and the repairman can select the appropriate capacitor based on the air conditioning unit's requirements, configure the connections, and complete the repair immediately without needing to return to the shop.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If a single hard start kit serves multiple capacitance needs, then the adaptability improves, but the ease of operation and configuration may deteriorate

Engineering Contradiction:

Improvesingle unit for multiple capacitancesVSAvoidease of configuration at repair site

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The kit is segmented into a container with multiple capacitors and a cover with multiple terminals. This segmentation allows for easy configuration by simply connecting the appropriate terminals, making it simple to adapt to different capacitance needs without complex reconfiguration procedures.

Inventive Principle:

Principle #1Segmentation

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

Enables repairmen to complete repairs efficiently by providing a single unit that can be configured to match the capacitance needs of various air conditioning units, reducing the need for multiple kits and minimizing delays in restoring cooling system operation.

Implementation Method 1

A relay has a contact and means for opening and closing said contact in response to voltage across start and run windings of a single phase electric motor

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

Single phase induction motors of the type commonly used with air conditioner and cooling equipment compressors generally require some type of auxiliary start capacitor for starting the motor

Methodology Applied

Scientific EffectCapacitance: Capacitance

Data Source

PatentUS12224131B1Hard start kit for multiple replacement applications

Publication Date: 2025.02.11 RECTORSEAL LLC

AI summary

A hard start capacitor replacement unit has a plurality of capacitors in a container sized to fit in existing hard start capacitor space. The capacitors are 4 metallized film capacitors wound in a single cylindrical capacitive element. The container has a common terminal and capacitors value terminals for the plurality of capacitors, which may be connected singly or in combination to provide a selected capacitance. An electronic or other relay connects the selected capacitance in parallel with a motor run capacitor. The hard start capacitor replacement unit is thereby adapted to replace a wide variety of hard start capacitors.