Variable Speed Motor Profile Editing for Spa Water Flow Control

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Solution Overview

Problem

Existing spa and hot tub systems lack customization options for water circulation and heating, due to limitations in motor and control system capabilities, restricting user control over water flow and temperature adjustments while maintaining efficient operation.

Innovation Solution

A motor control system that includes a processing device, memory device, display device, and input device, allowing users to select, edit, and store motor profiles, which control the operation of a variable speed motor, enabling customization of water flow amplitude and pulsing frequency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional motor control systems are used in spa applications, then the system structure is simple and cost-effective, but the customization capability for water circulation patterns is limited

Engineering Contradiction:
Improvecustomization capabilityVSAvoidcontrol system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The control system is segmented into distinct functional modules: motor control unit, user interface module, profile storage unit, and communication interface. This modular segmentation enables enhanced customization capabilities while managing system complexity through organized functional separation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system implements dynamic motor profile adjustment allowing real-time modification of water circulation patterns, jet pulsing frequencies, and flow rates. The control system transitions from static predetermined patterns to dynamically adjustable parameters, enabling customization without requiring complete system redesign.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If basic motor control is implemented, then the system is easy to operate, but the ability to provide varied water circulation patterns is restricted

Engineering Contradiction:
Improvewater circulation pattern varietyVSAvoiduser control complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system pre-configures multiple motor profiles with different water circulation patterns, jet pulsing frequencies, and flow rates. These profiles are stored in memory and can be selected by users without requiring complex real-time adjustments. This preliminary configuration approach provides pattern variety while maintaining ease of operation through simple profile selection.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system creates and stores multiple copies of motor control profiles, each representing a different water circulation pattern. Users can select from these pre-copied profiles or create custom profiles by copying and modifying existing ones, thereby accessing varied circulation patterns without needing to understand complex control parameters.

Inventive Principle:
Principle #26Copying

3Ease of operation

If fixed motor profiles are used, then the control system is simple, but the user comfort and therapeutic effectiveness are limited

Engineering Contradiction:
Improveuser comfortVSAvoidprofile management capability
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The system enables users to create, edit, and customize their own motor profiles through an intuitive interface. Users can adjust parameters such as circulation rate, jet pulsing patterns, and session duration according to their personal comfort preferences. This self-service capability enhances user comfort while the system automatically manages the complexity of profile storage and retrieval.

Inventive Principle:
Principle #25Self-service

4Use of energy by moving object

If variable speed motor control is implemented, then energy efficiency can be improved, but the system complexity increases compared to traditional induction motors

Engineering Contradiction:
Improvemotor energy efficiencyVSAvoidmotor control system complexity
Core Design Contradiction:
Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The system controls motor speed and power consumption by dynamically changing operational parameters based on selected profiles and user preferences. The variable speed motor adjusts its rotational speed and torque output according to real-time requirements, optimizing energy efficiency. The control system manages this parameter variation through programmable logic, balancing energy savings with acceptable system complexity.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS8473110B2Systems and methods for controlling operation of a motor
Publication Date: 2013.06.25 REGAL BELOIT AMERICA INC
  • US8473110B2 patent drawing
  • US8473110B2 patent drawing
  • US8473110B2 patent drawing

AI summary

A method for editing a motor profile is described. The method includes receiving a stored motor profile selection via a user interface, and receiving user inputs via the user interface. The user inputs include instructions relating to an edit of the selected motor profile. The method also includes storing the edited motor profile.