ZKNS/gas (vacuum) boiler, vacuum phase change boiler (), vacuum pan

    The structure of the vacuum hot water boiler is shown in the figure, which is composed of a combustion chamber, a water pipe, a negative pressure steam chamber, a heat exchanger, and heat medium water. The inside of the furnace body is in a vacuum state, which is isolated from the outside air and forms an airtight state. The heat medium water covers the furnace and water pipes and is sealed inside the furnace body. Because the pressure in the negative pressure steam chamber is kept below atmospheric pressure, when the heat medium water in the airtight interior is burned and heated, it immediately boils, producing the same temperature as the heat medium water. steam at the same temperature. During the rising process, the steam generated in the furnace touches the surface of the heat exchanger arranged in the negative pressure steam chamber. Since the water temperature in the heat exchanger is lower than the temperature of the steam, the steam will condense on the surface of the heat exchanger and release a large amount of heat of vaporization. , to heat the water or other media in the heat exchanger, and the condensed water returns to the heat medium water under the action of gravity. Therefore, the heat medium water is constantly circulating in the closed furnace body of "boiling=evaporation=condensation=heat medium water". There is no need to replenish condensate, and there is no danger of empty burning. The water (medium) in the heat exchanger is heated and sent to users for air conditioning and sanitary hot water or other purposes.

    Zhengzhou Fenglan

Safe and reliable heating system

    The vacuum water heater works under negative pressure, strictly monitors and controls the temperature, pressure and liquid level, implements multiple protections, and has no danger of explosion.

long life

    Since the interior of the vacuum boiler is an airtight whole, during operation, the oxygen in the intermediate water is precipitated and discharged out of the furnace. Oxygen corrosion will not occur in the furnace for a long time. A small amount of heat medium water is added at one time. The calcium and magnesium ions do not increase or decrease during operation, so no scaling occurs inside the boiler, which increases the service life of the boiler, and the designed service life exceeds 15 years.

One machine with multiple functions, strong applicability

    Due to the design and structure of the vacuum boiler, one machine can be used for multiple purposes. At the same time, it can provide multiple channels of hot water with different temperature differences to meet the various needs of users for air conditioning, heating, sanitary hot water, swimming pools, hotels and other hot water supply. It can also be used for various types of boilers. Industrial and mining enterprises provide process water.

Energy efficient

    The vacuum boiler adopts vacuum hot water boiler technology. The boiler operates in a vacuum state, with low boiling point and latent heat of vaporization (condensation latent heat) heat exchange, which effectively improves thermal efficiency and has good heat exchange performance; horizontal three-pass structure, threaded smoke pipe, disturbance The flow sheet and the front smoke box of the semi-humid back chamber make the thermal efficiency of the boiler reach more than 90%.

Compact structure, easy installation

    The modular design of the vacuum boiler, high-performance heat exchange components, and the small size of the unit make the product easy to transport and install. In a small space, multiple units can be used in parallel.

automation control

    Automatic detection of furnace water temperature and outlet water temperature. Automatic detection of burner and furnace internal faults. The burning time can be controlled by programming. According to the change of load, it can automatically adjust the whole combustion process of the first-stage fire and the second-stage fire, reduce the number of starts and stops caused by load changes, and make the boiler run normally.

Eliminate the complicated approval and annual review procedures

    The vacuum boiler unit operates in a vacuum state, which simplifies the procedures for approval and annual review of pressure vessels, and no license is required for operation.

low investment

    The vacuum boiler heating system does not require secondary heat exchange and primary circulation system, so the overall heating system investment is reduced.

low running cost

    Due to the high efficiency of the boiler, no fouling, no corrosion and the reduction of system equipment, the system operation and maintenance costs are low.

The coal-fired vacuum boiler adopts a reverse-burning double-layer grate structure. The air enters through the coal feeding door and passes through the coal seam. The volatile matter and CO and the coal falling from the upper grate are respectively in the space above the lower grate and the lower grate. After being burned up, the burned flue gas enters the convection flue and is exchanged with the convection heating surface and is discharged from the chimney. The reverse burning furnace has the following notable features:

Since the combustible components can be fully burned, the thermal efficiency of the boiler is higher.

Double-layer reverse combustion is adopted, and the effect of boiler smoke and dust removal is good.

No drum, induced draft fan, fast heating speed of the boiler, no noise, and obvious energy saving and environmental protection effects.

The boiler does not need softened water equipment, no scaling, no water corrosion, and the boiler has a long service life.

The boiler does not need to be reported for installation, nor does it require annual inspection.