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Phase change water heater and control method thereof

A control method and water heater technology, which can be applied to heat storage heaters, fluid heaters, lighting and heating equipment, etc., can solve problems such as the reduction of heat exchange efficiency of heat exchangers, and achieve sufficient heat exchange, cost reduction, and energy improvement. The effect of utilization

Active Publication Date: 2019-08-13
WUHU MIDEA KITCHEN & BATH APPLIANCES MFG CO LTD
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  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a phase change water heater and its control method, aiming to solve the technical problem that the heat exchange efficiency of the heat exchanger is reduced due to the heat dissipation of the existing phase change water heater through the cooling fins

Method used

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Examples

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no. 1 example

[0082] Based on the first embodiment, a second embodiment of the control method of the phase change water heater of the present invention is proposed. In this embodiment, after step S120, the control method of the phase change water heater further includes:

[0083] Step S140, when the temperature of the first water outlet is lower than the set temperature, and the temperature of the first water outlet is lower than the temperature of the phase change point of the phase change material, determine the temperature of the water inlet and the temperature of the first water outlet Whether the temperature difference between the temperatures is smaller than a first preset temperature difference, wherein the first preset temperature difference is smaller than the phase transition point temperature;

[0084] Step S150, when the temperature difference is greater than or equal to the first preset temperature difference, control the operation of the heater based on the maximum power.

[0...

no. 6 example

[0108] Based on the above embodiments, the sixth embodiment of the control method for the phase change water heater of the present invention is proposed. In this embodiment,

[0109] Step S220, when the water flow rate is greater than the preset flow rate and the duration of the water flow rate greater than the preset flow rate is longer than a third preset time length, acquire the second water outlet temperature of the inner tank;

[0110] Step S230, determining whether the temperature of the second water outlet is lower than the temperature of the phase transition point;

[0111] Step S240, when the temperature of the second water outlet is lower than the temperature of the phase transition point, determine whether the temperature of the second water outlet is lower than a first preset temperature, wherein the first preset temperature is lower than the phase transition temperature point temperature;

[0112] Step S250, when the temperature of the second water outlet is grea...

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Abstract

The invention discloses a phase change water heater and a control method thereof. The phase change water heater comprises a liner, a heater, a water pump, a three-way valve, one-way valve, and a phasechange material for heat storage; a water outlet of the liner is provided with a water outlet temperature sensor for detecting the water temperature; a water inlet of the liner is provided with a water inlet temperature sensor for detecting the water temperature; and one end of the one-way valve communicates with a second branch port of a water inlet pipe, and the other end communicates with a third branch port of a pipeline between the three-way valve and the water outlet of the liner. The heater and the water pump are controlled according to detecting results of the water inlet temperaturesensor and the water outlet temperature sensor, so that the failure of phase change materials caused by higher temperature of the phase change materials due to secondary heat absorption of the phase change materials can be effectively prevented, meanwhile, the full heat exchange of the phase change water heater can be guaranteed to the greatest extent, and the energy utilization rate is increased.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a phase change water heater and a control method thereof. Background technique [0002] Due to its small size and novel appearance, phase change water heaters are slowly moving towards the market. Phase change water heaters rely on the transformation of the physical state of phase change materials to store and release heat. During the heat absorption process of the phase change material, if the temperature of the phase change material is too high, the phase change material will fail. [0003] At present, in the relevant phase change water heater, in order to avoid the temperature of the phase change material from being too high, the phase change material is dissipated by adding cooling fins during the heat absorption process of the phase change material. However, since the phase-change material is filled in the body of the phase-change water heater provided with the heat ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H7/04F24H9/20
CPCF24H7/04F24H9/2007
Inventor 李硕
Owner WUHU MIDEA KITCHEN & BATH APPLIANCES MFG CO LTD
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