Vapor-water mixed heating device

Abstract

The invention relates to a vapor-water mixed heating device, which comprises a vapor-water heating chamber. The wall of the vapor-water heating chamber is provided with a water inlet pipe with a flange, a vapor inlet pipe and a water outlet pipe. The vapor-water mixed heating device is characterized in that: a convergent nozzle is arranged in the water inlet pipe; a mixing pipe is arranged in the water outlet pipe; a mixing cavity with a taper inlet is formed in the pipe body of the mixing pipe; the outlet of the convergent nozzle is positioned in the taper inlet of the mixing pipe; and the outer pipe wall at the outlet of the convergent nozzle and the inner pipe wall of the taper inlet of the mixing pipe form an annular Rafael convergent nozzle. Water to be heated is depressurized and accelerated by the convergent nozzle, and injected into the mixing pipe; vapor flows through the annular Rafael convergent nozzle, is adiabatically expanded, is injected into the mixing pipe in the ultrasonic velocity, and is rapidly mixed with the water to be heated, so that latent heat of vapor is released and the vapor is condensed into water, and the water to be heated absorbs the latent heat of vapor and is heated. The vapor-water mixed heating device is reasonable in design, simple in structure, low in vapor and water mixing noise, stable in operation, wide in regulating amplitude, high in thermal efficiency and wide in application range.

Description

technical field [0001] The invention relates to other direct contact heat exchange equipment with state change and heat exchange medium of a liquid and a gas or steam, especially a steam-water mixing heating device. Background technique [0002] As we all know, the existing steam-water heating equipment can be divided into two categories according to the heat transfer properties: one is the surface heat exchanger, the steam and water are not directly mixed, but the heat of the steam is transferred on the metal surface to exchange heat with water. The advantage of the steam-water heating equipment is that the operation is relatively stable, but the disadvantage is that it consumes too much steel, the price is high, and the utilization rate of the heat source is low; the other is the steam-water mixing heater, whose steam is directly mixed with water. For example, a "jet-type steam-water mixing heat exchanger" disclosed in the CN2033887U Chinese utility model patent applicatio...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of poor operation stability and small adjustment range of the steam-water mixing heat exchanger in the prior art, the present invention provides a steam-water mixing heating device with simple structure, reasonable design, high thermal efficiency, low noise and wide application range

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