External Microcontroller Switch for Hot Water Pump Smart Conversion
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Solution Overview
Problem
Existing systems for continuously circulating hot water in households often require new pump installations, which are costly and inefficient, especially in areas where hot water is needed instantly at various taps, and there is a need for a solution that can upgrade existing 'dumb' pumps to smart pumps without replacing them entirely.
Innovation Solution
An external microcontroller-operated switch is connected between the power source and the pump, capable of programming usage data and temperature sensing to operate the pump in Smart Mode, providing instantaneous hot water only during usage periods, thus minimizing energy loss and extending the life of existing pump systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous hot water circulation is implemented, then hot water availability at taps is improved, but energy loss increases
Solution Approach 1:
The patent implements periodic circulation of hot water through the use of a timer-controlled pump that operates in cycles (e.g., 15 minutes on, 45 minutes off) rather than continuously. This periodic operation maintains hot water availability in the system while dramatically reducing energy consumption and heat loss during the off-periods, directly resolving the contradiction between reliability and energy loss.
2Productivity
If a smart pump with internal microcontroller is installed, then pump operation efficiency is improved, but system cost increases
Solution Approach 1:
The patent divides the control function into two separate components: an existing 'dumb' pump that handles the mechanical pumping function, and a separate external control unit with microcontroller that handles the intelligent control functions. This segmentation allows the smart functionality to be added without replacing the entire pump system, reducing overall system cost while maintaining improved operation efficiency.
Solution Approach 2:
The patent introduces an external control unit as an intermediary device that sits between the power source and the existing pump. This intermediary contains the microcontroller and temperature sensor, providing smart control capabilities without requiring modification to the pump itself, thus avoiding the need to replace expensive pump units while still achieving efficient operation.
3Extent of automation
If existing dumb pump is replaced with smart pump, then control intelligence is improved, but installation complexity increases
Solution Approach 1:
The external control unit is designed as a universal device that can work with various types of existing pumps without requiring pump-specific modifications. It provides multi-functionality by combining power control, temperature sensing, timing functions, and learning capabilities in a single external unit, making it easy to install with any standard pump system while delivering advanced control intelligence.
Solution Approach 2:
By positioning the smart control functionality in an external intermediary unit rather than inside the pump itself, the patent simplifies installation. The external unit can be independently installed and configured without disassembling or modifying the existing pump, reducing installation complexity while still providing full control intelligence.
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 solution allows for efficient operation of small pumps, reducing energy consumption by limiting hot water circulation to actual usage times, maintaining instant hot water availability and minimizing heat loss, especially in winter, while being compatible with sporadically used systems.
Implementation Method 1
a temperature sensor is connected to the microcontroller in the switch unit, in order to sense a temperature change, such as when a hot water tap in a hot water system is turned on, by measuring an increase in temperature
Data Source
AI summary
An external control unit to be connected between a power source and an electrically driven pump to act as a smart switch to convert a “dumb” pump into a smart pump. The control system of this invention comprises a microcontroller-operated switch, located between the power source and the pump, or other fluid flow control device to be operated by electricity, and which can be programmed to record usage data of, e.g., hot water, by the household; it sets up the operating times in accordance with such usage. A temperature sensor is connected to the microcontroller to sense a temperature change, in a hot water system is turned on, by measuring an increase in temperature to indicate flow through the hot water pipe, and to record such data. This will determine, in the context of a hot water system, when the pump should be activated to bring up hot water.