Vacuum hot water boilers supply hot water of different temperatures and purposes, such as central air conditioning water, sanitary hot water, process hot water, etc. The lower half structure of a vacuum boiler is the same as that of a regular boiler, consisting of a combustion chamber and heat transfer tubes; The lower part is equipped with a heat medium (furnace water), and the upper part is a vacuum chamber, in which a U-shaped (or straight tube) heat exchanger is inserted. Due to the overall operation of the boiler under negative pressure, it is absolutely safe.

The heat medium (boiler water) inside the vacuum hot water boiler does not enter, exit, increase or decrease during the entire operation of the boiler. It is only enclosed in the vacuum chamber of the boiler and transfers heat between the heat transfer tubes and heat exchangers of the boiler.

The heat medium inside the furnace is completely deoxygenated pure water, which is non corrosive and free of scale, making the boiler life more than 20 years or even longer. In summary, the natural development trend of boilers with such performance is to replace traditional drum and shell boilers.

Technical characteristics of gas vacuum hot water boiler:

1. Boiler body: The combustion heating part of the vacuum phase change boiler body is made of high-quality Q235 plate and 20 # steel pipe material. The advantage is a large combustion chamber and a low heat load on the boiler furnace. The heating surface is large, the volume is small, the structure is compact, and the water capacity is small, resulting in a fast heating rate. In addition, the negative pressure evaporation chamber integrated in the upper part has stable performance and reliable operation. Due to the large space of the negative pressure evaporation chamber, the inserted heat exchanger can be manufactured according to the user's needs. Generally, horizontal boilers use straight tube heat exchangers, with detachable end heads and connecting pipes for easy maintenance and cleaning of the heat exchanger water pipes.

2. Manufacturing and construction of heat exchanger: The heat exchanger is made of stainless steel material, inserted into the negative pressure evaporation chamber in a bundle manner, and connected at both ends with flanges. Its advantages: easy disassembly, simple replacement, not easily corroded, easy maintenance and cleaning, durable.

3. Automation control: Advanced controllers are selected for the control part to automatically detect the temperature of the boiler water and the outlet water; Automatically detect faults inside the burner and furnace body; The combustion time can be controlled through program settings; Being able to automatically adjust the entire combustion process according to changes in load, reducing the number of starts and stops caused by changes in load, ensuring the normal operation of the boiler, and reducing the loss of blowing heat during start-up and shutdown.

4. Combustion equipment: Due to the special design of vacuum phase change boilers, various imported and domestic fuel and gas burners can be configured through dedicated installation plates according to fuel types and user needs.