A method of controlling an electric water heater

A technology for electric water heaters and control methods, applied to fluid heaters, lighting and heating equipment, etc., can solve problems such as scalding users and insufficient hot water, and achieve the effect of satisfying bathing experience, improving water safety and water experience

Active Publication Date: 2021-09-17
VATTI CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the circulation process, there will be hot water flowing through the tap water pipe. When the cold water tap is turned on after preheating, hot water will flow out. If the temperature of the circulating hot water is too high, the user will be scalded; if the target heating temperature of the electric water heater is set too low , there will be insufficient hot water when bathing

Method used

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  • A method of controlling an electric water heater
  • A method of controlling an electric water heater
  • A method of controlling an electric water heater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 2 As shown, a control method for an electric water heater, the electric water heater 1 includes a box body 10, an upper liner 11, a lower liner 12, a water inlet pipeline 13, a water outlet pipeline 14 and an electric control assembly 15, and the box body 10 is provided with The upper inner tank 11 and the lower inner tank 12 are connected to each other, the upper inner tank 11 is arranged directly above the lower inner tank 12 and its water temperature T4 is not less than the water temperature T3 of the lower inner tank 12 . A water pump 131 , a temperature detection device 132 and a water flow detection device 133 are provided on the water inlet pipeline 13 . The water outlet pipeline 14 includes a first water outlet pipe 141 and a second water outlet pipe 142. The upper end of the first water outlet pipe 141 vertically penetrates the bottom of the box body 10 and then extends into the lower inner container 12 for discharging the lower inner container ...

Embodiment 2

[0053] The difference between this embodiment and Embodiment 1 is that the control method for continuously judging whether to end the hot water circulation is different. Specifically, in step S7, it is continuously judged whether to end the hot water cycle, which continuously judges whether the working time t of the water pump 131 reaches the preset time value ts, and determines whether to end the hot water cycle based on the judgment result.

[0054] In this embodiment, the electronic control unit 15 is integrated with a timer, and the timer starts counting t when the water pump 131 starts working. If the working time t=the preset time value ts, it indicates that the hot water circulation needs to be ended. If the working time t

[0055] It can be seen that by detecting and judging whether the working time t of the w...

Embodiment 3

[0057] The difference between this embodiment and embodiment 1 or embodiment 2 is that the control method for continuously judging whether to end the hot water circulation is different. Specifically, in step S7, it is continuously judged whether to end the hot water circulation, and the water flow increase value ΔQ of the water inlet pipeline 13 is sampled once at a continuous interval time Δt, and it is judged whether the water flow increase value ΔQ is greater than or equal to the preset water flow rate Qs , and decide whether to end the hot water circulation based on the judgment result.

[0058] In this embodiment, the electronic control component 15 is integrated with a timer. When the water pump 131 or the lower heating device 121 starts to work, the timer starts counting. If the water flow increase value △Q of the water inlet pipeline 13 is greater than or equal to the preset water flow rate Qs, it indicates that the user is using hot water during the hot water circulat...

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PUM

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Abstract

The invention discloses a control method for an electric water heater, comprising: S2: entering the hot water circulation mode; S4: detecting the water temperature T1 of the water inlet pipeline; S5: judging whether the water temperature T1 is less than or equal to the first temperature threshold Ts1, and if so, entering the step S6, if not, return to step S4; S6: turn on the first switch, turn off the second switch, and then start the water pump; S7: continue to judge whether to end the hot water cycle, if so, go to step S8; S8: turn off the water pump. In the control method of the electric water heater of the present invention, the water temperature of the upper inner tank is designed to be not less than the water temperature of the lower inner tank, and the water is switched to the lower inner tank when the hot water is circulating, so as to ensure that even if the user uses cold water at the water end It will not be scalded, which improves the user's water safety and water experience; in the normal working mode, switch to the water outlet from the upper inner tank to ensure that the user has enough hot water when bathing, and better satisfy the user's bathing experience.

Description

technical field [0001] The invention relates to the technical field of electric water heaters, in particular to a control method for electric water heaters. Background technique [0002] In order to solve the problem that users have to put a period of cold water before using hot water every time, a gas water heater product with "zero cold water" function has been developed. However, due to the higher installation adaptability of electric water heaters, especially in the third-, fourth-, and fifth-tier markets, the installation and usage of electric water heaters is much higher than that of gas water heaters. In order to improve the bathing water experience when using an electric water heater, it is urgent to develop an electric water heater product with a "zero cold water" function. [0003] In order to achieve the "zero cold water" effect, most users need to use tap water pipes and hot water pipes to form a circulation loop through a one-way valve. During the circulation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H9/20
CPCF24H9/2014
Inventor 梁添杰杨世恩邓飞忠仇明贵潘叶江
Owner VATTI CORP LTD
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