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Automatic power changing electric water heater controller

An electric water heater and variable power technology, which is applied in the field of household electric water heater controllers and electric water heater control devices, can solve problems such as unresolved electric water heater tripping and power outage, and avoid sudden tripping and power outage, avoiding tripping and powering off, Realize the effect of automatic and reasonable distribution

Active Publication Date: 2010-02-10
A O SMITH (CHINA) WATER HEATER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this new type of electric water heater does not solve the problem of tripping and power failure that may be caused by the operation of the electric water heater.

Method used

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  • Automatic power changing electric water heater controller
  • Automatic power changing electric water heater controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The automatic variable power electric water heater controller of this embodiment consists of figure 1 The sampling monitoring circuit and figure 2 The judgment control circuit constitutes.

[0014] figure 1 The sampling monitoring circuit includes a sampling circuit composed of a current transformer J1 installed at the input end of the user's power supply and a sampling processing chip U1 (PIC12F674). The transmitting circuit is used to transmit the sampling signal of the current transformer to the judgment control circuit, and the parallel battery pack DC1 and DC2 power supply circuit that provides electric energy to each part of the circuit. The output terminal of the current transformer J1 is connected to the 3 pin of U1, and then the 7 pin of the output terminal of the chip is connected to the 9 pin of the U2 chip as the input end of the wireless transmitting circuit, and the 7 and 8 pins of the U2 chip are connected to the transmitting antenna of the wireless tr...

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PUM

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Abstract

The disclosed controller is composed of sampling and monitoring circuit and judging control circuit. The said sampling and monitoring circuit includes current transformer installed on output end of user's power source, and signal circuit transferring signal sampled by the said current transformer to the said judging control circuit. The judging control circuit includes signal receiving and demodulating circuit, judging and processing circuit, and power inversion control circuit connected to electric heating equipment. The input end of signal receiving and demodulating circuit is connected to the signal transmission circuit in sampling and monitoring circuit, and the output end is connected to input end and control end of power inversion control circuit in judging control circuit. Simple and practical combination between outer monitoring circuit and inner control circuit arranges power in house reasonably so as to solve issue of trip and break caused by using electric water heater.

Description

technical field [0001] The invention relates to a control device for an electric water heater, in particular to a controller for a household electric water heater, and belongs to the technical field of household appliances. Background technique [0002] With the improvement of people's living standards, electric water heaters have become an indispensable household appliance in many families. However, since the power of the electric water heater is relatively large, usually several thousand watts, and the maximum power load of the household unit is fixed at present, when many household appliances are used at the same time, the automatic operation (starting) of the ordinary electric water heater often causes The power load suddenly increases and exceeds the rated power load, resulting in tripping and power failure, which brings a lot of inconvenience to users. [0003] The applicant noticed that in the process of continuous improvement of the automatic control of electric wat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H1/20F24H9/20
Inventor 丁威鞠平万华新邱步王晖
Owner A O SMITH (CHINA) WATER HEATER CO LTD
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