Enamel glaze powder and enamel liner of water heater

A kind of enamel glaze and water heater technology, which is applied in the direction of fluid heater, lighting and heating equipment, etc., can solve the problems of corrosion, water leakage, weight loss in boiling water, brittle enamel, etc., and achieve improved acid resistance and strength, lower weight loss in boiling water, and lower Effect of protection current

Active Publication Date: 2017-06-09
QINGDAO HAIER NEW ENERGY ELECTRIC APPLIANCE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, air bubbles or needle holes are likely to occur during the production process of the enamel liner. At the same time, the enamel is relatively brittle, and vibrations and collisions are prone to scale explosions.
In addition, enamel will gradually dissolve and peel off in hot water, which is technically called "boiling water weight loss". Over time, enamel falling off will pollute water quality, rust and leak.
Existing enamel liner water heater

Method used

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  • Enamel glaze powder and enamel liner of water heater
  • Enamel glaze powder and enamel liner of water heater

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Embodiment Construction

[0016] The enamel glaze powder for water heater enamel liner of the embodiment of the present invention can be made of following components (proportioning by weight): 45-47 parts of SiO 2 , 0.1-0.2 parts of Al 2 o 3 Nanoparticles, 12-13 parts of B 2 o 3 , 0.6-0.7 parts of Fe 2 o 3 , 11-12 parts of Na 2 O, 4.5-5.5 parts of K 2 O, 3.1-3.4 parts of NaF, 3-3.5 parts of CoO, 1.5-2 parts of NiO, 0.25-0.3 parts of MnO 2 , 2.2-2.8 parts of Li 2 O, 1-2 parts of CaO.

[0017] In the embodiment of the present invention, the Al in the enamel glaze powder 2 o 3 It is an essential ingredient to improve the chemical stability of the enamel glaze layer. Al added in the enamel glaze powder in the prior art 2 o 3 The size is usually on the order of tens to hundreds of microns, while Al 2 o 3 The content is usually 5-7%, or about 2-3%. Prior to the present invention, those skilled in the art had not realized that Al 2 o 3 The size of the enamel layer has an impact on the perfor...

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Abstract

The invention provides enamel glaze powder and an enamel liner of a water heater. The enamel glaze powder is used for the enamel liner of the water heater and is prepared from the following raw materials in parts by weight: 45 to 47 parts of SiO2, 0.1 to 0.2 part of Al2O3 nanoparticle, 12 to 13 parts of B2O3, 0.6 to 0.7 part of Fe2O3, 11 to 12 parts of Na2O, 4.5 to 5.5 parts of K2O, 3.1 to 3.4 parts of NaF, 3 to 3.5 parts of CoO, 1.5 to 2 parts of NiO, 0.25 to 0.3 part of MnO2, 2.2 to 2.8 parts of Li2O and 1 to 2 parts of CaO. The enamel liner of the water heater, which is prepared from the enamel glaze powder, can be subjected to 1 million times of pulse impacting tests (with rated pressure of 0.85MPa), and the utilization requirements of commercial-grade water heater products are met.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to an enamel glaze powder and an enamel liner for a water heater. Background technique [0002] At present, the inner tanks of water storage water heaters on the market are mainly stainless steel inner tanks and enamel inner tanks. The manufacturing process of the stainless steel liner is relatively complicated, and its corrosion resistance, acid and alkali resistance are poor, and it is easy to scale. The welding part is easy to oxidize and rust when exposed to high temperature, which will eventually lead to water leakage in the water tank or even the scrapping of the entire water heater. The enamel liner is made by coating the enamel shaft on the steel plate after proper treatment and firing at high temperature. It has the stability of steel (compression resistance, sufficient strength) and the excellent performance of glass enamel, such as corrosion resistance and non-toxi...

Claims

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Application Information

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IPC IPC(8): C03C8/06C22C38/14F24H9/00
Inventor 赵增奎陈炳泉李文东柴树昌
Owner QINGDAO HAIER NEW ENERGY ELECTRIC APPLIANCE
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