Control method for electric water heater and electric water heater

A technology of an electric water heater and a control method, which is applied in the directions of fluid heaters, lighting and heating equipment, etc., can solve the problems of affecting the service life of the water heater, scale generation in the inner tank, and untimely maintenance, and is suitable for large-scale promotion and avoidance of use. The effect of long life and high degree of automation

Inactive Publication Date: 2017-03-01
QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER
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AI Technical Summary

Problems solved by technology

[0002] Electric water heaters are widely used due to the advantages of convenient temperature adjustment, clean sanitation, convenient installation, and no harmful gas. However, if the electric water heater is used for a long time, the inner tank will produce scale and the anode magnesium rod will be consumed. Cleaning and maintaining the liner and magnesium rod will seriously affect the service life of the water heater
[0003] The cleaning of the existing electric water heater liner and the replacement of anode magnesium rods generally rely on rough estimation of time, manual disassembly and inspection, and visual inspection to see if maintenance is required. This manual inspection method has the following disadvantages: 1. The inner tank cannot be automatically judged Whether maintenance and magnesium rods are needed; 2. Manual rough estimation of time leads to untimely maintenance; 3. Judging whether maintenance is required by manual disassembly is time-consuming and laborious

Method used

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  • Control method for electric water heater and electric water heater
  • Control method for electric water heater and electric water heater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This preferred embodiment provides a control method for an electric water heater. This method is used to judge whether the magnesium rod in the electric water heater needs maintenance, such as figure 1 It specifically includes the following steps:

[0033] Step 1. The control unit collects the temperature parameter tem 1 , water quality TDS detection parameter m 1 , and the cumulative working time parameter t of the heating tube 1 , among them, water quality TDS refers to the concentration of total dissolved substances in water, mainly reflecting the Ca 2+ , mg 2+ , Na + , K + Corresponding relationship between plasma concentration and water hardness and conductivity;

[0034] Step 2. According to formula Y 1 =A-f(tem 1 , m 1 , t 1 ) to calculate the maintenance index parameter Y 1 , where A is a constant, which is the preferred fitting value obtained after many experiments;

[0035] The preferred formula is:

[0036] Y 1 =3.6-m 1 *(0.0006)-(0.0004)*temp...

Embodiment 2

[0041] This preferred embodiment provides a control method for an electric water heater. This method is used to judge whether the inner tank of the electric water heater needs maintenance, such as figure 2 It specifically includes the following steps:

[0042] Step 1. The control unit collects the temperature parameter tem 2 , water quality TDS detection parameter m 2 , and the cumulative working time parameter t of the heating tube 2 , among them, water quality TDS refers to the concentration of total dissolved substances in water, mainly reflecting the Ca 2+ , mg 2+ , Na + , K + Corresponding relationship between plasma concentration and water hardness and conductivity;

[0043] Step 2. According to formula Y 2 =B-f(tem 2, m 2 , t 2 ) to calculate the maintenance index parameter Y 2 , where B is a constant, which is the preferred fitting value obtained after many experiments;

[0044] The preferred formula is:

[0045] Y 2 =4.8-m 2 *(0.0006)-(0.0003)*temp 2...

Embodiment 3

[0050] The preferred embodiment provides an electric water heater. The electric water heater adopts the control method described in the preferred embodiment 1 or 2. When the inner tank and / or the magnesium rod needs to be cleaned or replaced, timely and accurate reminders are made. It is judged that the best time for cleaning or replacement is missed and the service life is affected. The electric water heater has a longer service life and better user experience, and is suitable for large-scale promotion.

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Abstract

The invention discloses a control method for an electric water heater and the electric water heater and belongs to the field of water heater devices. The control method for the electric water heater and the electric water heater are designed for solving the problem that existing electric water heaters cannot automatically judge whether need to be maintained. The control method for the electric water heater comprises the steps that the maintenance index parameter value is obtained by calculating the temperature parameter and the water quality parameter of the interior of an inner container of the electric water heater and the working time parameter of a heating pipe, and whether the electric water heater needs to be maintained is judged according to the comparison result of the maintenance index parameter value and the working time parameter value of the electric water heater. The electric water heater provided by the invention adopts the control method. According to the control method of the electric water heater, whether the inner container and a magnesium rod need to be maintained can be automatically judged, and judgment is timely and precise. The electric water heater is longer in service life and better in user experience.

Description

technical field [0001] The invention relates to the field of water heater devices, in particular to a control method of an electric water heater and an electric water heater using the method. Background technique [0002] Electric water heaters are widely used due to the advantages of convenient temperature regulation, clean and hygienic, convenient installation, and no harmful gases. However, if the electric water heater is used for a long time, the inner tank will produce scale, and the anode magnesium rod will be consumed. Cleaning and maintenance of the inner tank and magnesium rod will seriously affect the service life of the water heater. [0003] The cleaning of the inner tank of the existing electric water heater and the replacement of the anode magnesium rod generally rely on rough estimation of time, manual disassembly and inspection, and visual inspection of whether maintenance is required. This manual inspection method has the following disadvantages: 1. It is im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H9/20
Inventor 张斌陈小雷李雪杨平薛祥玉
Owner QINGDAO ECONOMIC & TECHN DEV ZONE HAIER WATER HEATER
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