CN2305604Y

CN2305604Y - Phase change type water boiler

Info

Publication number: CN2305604Y
Application number: CN 97221688
Authority: CN
Inventors: 苏俊林; 王震坤; 郝玉福
Original assignee: Jilin University of Technology
Current assignee: Jilin University of Technology
Priority date: 1997-07-21
Filing date: 1997-07-21
Publication date: 1999-01-27
Anticipated expiration: 2007-07-21

Abstract

The utility model relates to a phase change type water boiler adopting a phase change heat pipe. A combustion device of the utility model is arranged at the bottom of a boiler body (7), the water jacket (6) is arranged at the surrounding of the boiler body (7), an inner liner (10) is added in the boiler body (7), a plurality of phase change heat-transfer pipes (8) are installed on a base plate (9) of the inner liner, a cooling section of the phase change heat-transfer pipe (8) is arranged in the inner liner (10), a heating section is arranged in a boiler chamber, and communicating pipes (12), (19) communicated with the water jacket (6) are respectively arranged at the upper part and the lower part of the inner liner (10).

Description

The phase-change type hot-water boiler

The utility model relates to a kind of phase-change type hot-water boiler that adopts the phase-change heat transfer pipe.

At present, extensively adopt traditional minitype vertical type hot-water boiler heating or produce hot water in units such as every family or office, school, restaurant, hotels.But mostly the type of furnace have that the thermal efficiency is low, heat supply speed slow, unreasonable structure, problem such as metal consumption is big and the life-span is short.

The purpose of this utility model be to provide a kind of novel structure, simple, the consumption steel is few, volume is little, the thermal efficiency is high, the fireballing New-type phase change formula of heat supply hot-water boiler.

The purpose of this utility model is achieved in that the burner of this phase-change type hot-water boiler is arranged on the bottom of body of heater (7), water jacket (6) be arranged on body of heater (7) around, in body of heater (7), add inner bag (10), on the base plate (9) of inner bag (10) some phase-change heat transfer pipes (8) are housed, the cooling section of phase-change heat transfer pipe (8) is in inner bag (10), bringing-up section is respectively equipped with communicating pipe (12), (19) that are communicated with water jacket (6) in the upper and lower of inner bag (10) in burner hearth.

High-temperature flue gas after the burner burning passes pipe (8) with heat transferred heat-transfer surface water jacket (6), inner bag (10) and phase transformation, by them the heat transferred water that absorbs is made it heating then.Phase-change heat transfer pipe (8) is the critical component of this hot-water boiler.It is a kind of enclosed two-phase thermal siphon with heat pipe principle work.Vacuumize and fill the working solution that produces phase transformation in the pipe.When thermal source during to the heating of the hypomere (bringing-up section) of its pipe, the working solution boiling back evaporation of being heated, steam is dirty in epimere (cooling section) at differential pressure action, emits latent heat and condenses into liquid phase in this section.Lime set is returned bringing-up section by gravity, circulation so repeatedly, and heat just constantly passes to cold section from hot arc.Because inner bag (10) is communicated with water jacket (6), guarantee good water circulation.

Because this hot-water boiler adopted high-performance heat transfer components phase-change heat transfer pipe, and carried out above-mentioned reasonable structural design, make it have novel structure, simple, characteristics such as the consumption steel is few, volume is little, the thermal efficiency is high, heat transfer rate is fast.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is the profile according to the phase-change type hot-water boiler that the utility model proposes.

Fig. 2 is the A-A profile of Fig. 1.

Below in conjunction with details and the working condition of accompanying drawing detailed description according to the concrete boiler that the utility model proposes.

The boiler foot is grey chamber, and coal ash is removed by ash door (1).In support (2) fire grate (3) is housed, its top is the combustion chamber, is to improve burning, and chamber wall is the adiabatic circle of refractory concrete (4).Coal is put into fire grate (3) burning from fire door (5), is gaseous fuel or liquid fuel as fuel, and burner is corresponding burner.High-temperature flue gas after the burning and heat-transfer surface water jacket (6), inner bag (10) and high efficient heat exchanging face phase-change heat transfer pipe (8) carry out heat exchange, the water in heat transferred water jacket (6), the inner bag (10).For improving the hydrodynamic force circulation of inside of boiler (10), its top is provided with communicating pipe (12) and the bottom is provided with communicating pipe (19).Phase-change heat transfer pipe (8) is contained on the base plate (9) of inner bag (10), and its cooling section is in inner bag (10), and its bringing-up section is in burner hearth.Be further augmentation of heat transfer, on the bringing-up section of phase-change heat transfer pipe (8), be provided with longitudinal fin (18).Working solution in the bringing-up section of high-temperature flue gas heating phase-change heat transfer pipe (8), bringing-up section is heated boiling and evaporates, and this process is the boiling heat transfer phase transition process from the liquid phase to the gas phase.Steam flows to cooling section under differential pressure action, emit latent heat at this section and give the water in the inner bag and condense into liquid phase, and lime set is back to the bringing-up section of bottom by the gravity effect.Phase-change heat transfer pipe (8) has been strengthened the diabatic process of boiler greatly.Hot water in the boiler flows out by outlet pipe (13), and the moisturizing in the boiler flows into by water inlet pipe (20).Flue gas after the heat release enters smoke stack emission in atmosphere through flue (16).(17) be ring flange on the flue.

Claims

1. phase-change type hot-water boiler, its burner is arranged on body of heater (7) bottom, water jacket (6) is arranged on body of heater (7) on every side, it is characterized in that adding in the body of heater (7) inner bag (10), on the base plate (9) of inner bag (10) some phase-change heat transfer pipes (8) are housed, the cooling section of phase-change heat transfer pipe (8) is in inner bag (10), and bringing-up section is respectively equipped with communicating pipe (12), (19) that are communicated with water jacket (6) in the upper and lower of inner bag (10) in burner hearth.

2. phase-change type hot-water boiler according to claim 1 is characterized in that the bringing-up section of phase-change heat transfer pipe (8) is provided with longitudinal fin.

3 phase-change type hot-water boilers according to claim 1 and 2, what it is characterized in that filling in the phase-change heat transfer pipe (8) is the distilled water that has added organic media and corrosion inhibiter.