Water boiler with double preheating modes

Abstract

The invention discloses a water boiler with double preheating modes. The water boiler comprises a water boiling tank, a water preheating tank and a cold water tank. The cold water tank is arranged above the water preheating tank and used for supplementing water to the water preheating tank. The water boiling tank is parallel and adjacent to the water preheating tank. According to the water boiler, the three water tanks are adopted, the water boiling tank generates boiled water of 100 DEG C, the water preheating tank generates hot water of 80 DEG C, and the cold water tank supplements the water when the level of the water in the water preheating tank is low. When the water preheating tank is heated, steam generated by water boiling enters a steam exhausting pipe, and as the level of cold water in the cold water tank is higher than the steam exhausting pipe, in the process of exhausting the steam in the steam exhausting pipe in a circulating mode, generated heat preheats the cold water in the cold water tank; meanwhile, as the temperature of the water in the water preheating tank is 80 DEG C, when the water boiler does not carry out heating and is in a standby state, the cold water tank continues to absorb the heat generated by the hot water in the water preheating tank for preheating the cold water. By means of the two modes, the water boiler can effectively recover and utilize the lost heat in the heating and standby processes, energy is saved, and consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of water boilers, in particular to a double preheating water boiler. Background technique [0002] The structure of existing water boiler is as figure 1 As shown, it includes a power switch, an insulated water tank, a heating unit, a temperature detection unit, a water injection unit, a water level detection unit, a control unit and a water outlet unit. Wherein the heat preservation water tank is respectively connected with the heating unit, the temperature detection unit, the water injection unit, the water level detection unit and the water outlet unit, and the control unit is respectively connected with the power switch, the heating unit, the temperature detection unit, the water injection unit and the water level detection unit. After the installation of the water boiler is completed, at first the water injection unit is used to inject water into the heat preservation water tank, then the power switch i...

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Problems solved by technology

[0003] However, when water is taken continuously, cold water enters the heat preservation water tank and mixes with the boiling water inside, and mixed water (yin and yang water) appears; Calcium, magnesium and other metal components and nitrite content are very high, often drinking this kind of water will interfere with human intestinal and gastric functions, causing temporary diarrhea and abdominal distension

Moreover, due to repeated heating, a lot of useless work has been done, and the energy consumption is high.

[0004] Moreover, no matter what the control principle is for the current water boiler products, it is the process of heating from normal temperature water to 90-100 degrees of boiling water, and the temperature rise process is between 75-85 degrees. The water volume is large. In order to meet this requirement, the water boiler adopts the method of increasing the volume of the boiling water tank and increasing the power of the heating tube, generally at 12KW, which has high energy consumption, high cost, and long heating time. Unable to use, the only way to increase the number of water boilers

[0005] In addition, tap water will inevitably produce secondary pollution during long-distance pipe network transportation; similarly, in areas with high hardness water quality, the water quality is too hard, and water-alkali scale will be generated when heated. These drinking water are endangering our health all the time.

Scale is generated in the heating part of the water boiler, which also leads to slow heating efficiency, increased maintenance and electricity costs, and what is more serious is that when the scale in the heating part increases, there will be safety hazards

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