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Fast electric water heater heating control method compatible with emc

An electric water heater and heating control technology, applied in fluid heaters, lighting and heating equipment, etc., can solve problems such as inability to meet EMC compatibility, flickering lights, and affecting the normal operation of other home appliances

Active Publication Date: 2017-12-12
ARISTON THERMO (CHINA) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, in the existing technology, most of the fast electric water heaters that realize stepless temperature regulation adopt the method of cutting wave control, which cannot meet the requirements of EMC compatibility without adding additional electronic devices (filters, etc.)
There are also some instant electric water heaters, which can solve the problem of EMC compatibility through the conventional software full-wave control method, but for areas where the power supply is not very good, the lights in the home will flicker when the instant electric water heater is working, and affect other areas. Problems with appliances working properly

Method used

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  • Fast electric water heater heating control method compatible with emc
  • Fast electric water heater heating control method compatible with emc
  • Fast electric water heater heating control method compatible with emc

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] In view of the problem of EMC in the absence of safety devices such as large filters in the cut-wave control, and the problem of flicker in the conventional full-wave control, the present invention intends to provide a heating control method for a fast (instant heating) water heater, which can Overcome these two problems at the same time: in order to be compatible with EMC, the present invention adopts full-wave control, in order to test flicker problem, according to figure 1 The conditions shown are tested and obtained after field tests in different power consumption environments of different users (we have searched for harsh power consumption environments in many places at home and abroad). Figure 4-1 to Figure 4-26 Some waveforms are shown, these waveforms ensure that the lights do not flicker when the water h...

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Abstract

The invention relates to an EMC-compatible rapid heating control method for an electric water heater. The water heater and the lamp are connected in parallel to the AC mains, and full-wave control is adopted to test the voltage output waveforms at both ends of the two heating tubes when the water heater is working under different powers. Record multiple sets of waveform data when the light is not flashing; calculate the equivalent output power for each set of waveforms to form a basic power level; combine adjacent power levels to generate a combined power level to reduce the power between the levels When the water heater is working, the controller calculates the power P required for heating, and looks up the table to select the power that is greater than or equal to P and closest to P for heating. The invention optimizes and controls the control signal of the thyristor, so that the water heater can meet the EMC requirements without adding high-cost electronic components such as filters, minimize the impact of the water heater on the user's power consumption environment, and realize a nearly infinite Heating power regulation.

Description

technical field [0001] The invention relates to a heating control method for a fast electric water heater, in particular to a control method for a fast electric water heater compatible with EMC. Background technique [0002] At present, in the existing technology, most of the fast electric water heaters that realize stepless temperature regulation adopt the method of cutting wave control, which cannot meet the requirements of EMC compatibility without adding additional electronic devices (filters, etc.) . There are also some instant electric water heaters, which can solve the problem of EMC compatibility through the conventional software full-wave control method, but for areas where the power supply is not very good, the lights in the home will flicker when the instant electric water heater is working, and affect other areas. Problems with appliances working properly. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20
CPCF24H9/20F24H15/407F24H9/2028
Inventor 张长明薛磊明周杰许伟
Owner ARISTON THERMO (CHINA) CO LTD
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