CN201081227Y

CN201081227Y - Instantaneous mini-type steam generator

Info

Publication number: CN201081227Y
Application number: CNU2007200567722U
Authority: CN
Inventors: 吴晓平; 陈家敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-04
Filing date: 2007-09-04
Publication date: 2008-07-02
Anticipated expiration: 2017-09-04

Abstract

The utility model provides an instantaneous heating micro type steam generator; the utility model is mainly characterized in that the upper part of a burner is provided with a water storage container which is provided with a water inlet and a steam outlet and provided inside with a plurality of heat conduction pipes passing through the container; the heat conduction pipes in the container are curved and have inlet ends covered above the burner; the container is provided outside with an exhaust fan of which an air intake is communicated with outlet ends of the heat conduction pipes. The utility model uses the exhaust fan to blow the thermal current generated by the fuel gas firing in the heat conduction pipes, so that the pipe diameter of the heat conduction pipes is relatively small, correspondingly, the volume of water storage container is markedly reduced; in addition, the curved shape of the heat conduction pipes can effectively enlarge the contact area between the heat conduction pipes and the water and prolong the flowing time of the thermal current in the heat conduction pipes; based on the improvements, the fire tube structure which is originally only applied to large equipments such as boilers can be applied to desk top type equipments, thereby resolving the incrustation problem existing in the prior instantaneous heating micro type steam generator.

Description

Instant heating type small-sized steam generator

Technical field

The utility model relates to steam generator, particularly can put on the table or hang Instant heating type small-sized steam generator on the wall, make fuel with combustion gas.

Background technology

At present knownly put on the table or hang Instant heating type small-sized steam generator on the wall, make fuel with combustion gas such as natural gas, coal gas, all be to adopt the waterpipe type structure, that is use the combustion gas heating pipe, while water is flowed be heated boiling to produce steam in water pipe.The disadvantage of this small-sized steam generator is to produce incrustation scale easily in water pipe, and severe patient also can stop up water pipe, so this class small-sized steam generator can only adopt soft water, and operating cost height, use inconvenience.Secondly, the discharge in the water pipe must be complementary with the firepower size, otherwise or because discharge too much makes the steam of ejection be mingled with a large amount of water droplets, or the water pipe end is out of shape because of hyperthermia and superheating because discharge is too small, even burn.Just because of there are these shortcomings, yet there are no the Instant heating type small-sized steam generator that can be in large-scale application in the market.

In order to solve the incrustation scale problem, what have in this class main equipment of boiler has adopted the fire tube structure.The characteristics of multitubular boiler are to have a bulk container that is filled with water, and arrange many thick fire tubes in the container, and the hot flue gas nature upwelling of burner hearth internal combustion generation is crossed fire tube, and fire tube is heated and makes the water boiling produce steam.This fire tube structure has solved the problem of incrustation scale blocking pipe well, but can not directly apply to the small-sized steam generator of making fuel with combustion gas.Because being the mode with free convection, the hot flue gas of multitubular boiler flows through fire tube, the caliber of fire tube is all bigger, correspondingly tank also must have bigger volume and just can admit many thick fire tubes, and be required usually to put on the table or hang on the wall with the small-sized steam generator that fuel is made in combustion gas, its volume and weight is limited, can not resemble and equip a big tank the boiler, also just can't in container, arrange many thick fire tubes.Just because of this, present someone as yet expects that the fire tube structure that will be applied in this class main equipment of boiler is incorporated in the small-sized steam generator.

Summary of the invention

The purpose of this utility model provides a kind of Instant heating type small-sized steam generator that can effectively solve the incrustation scale problem.

The utility model is achieved in that Instant heating type small-sized steam generator includes a plurality of combustion gas boccas, especially, above bocca, be provided with the container of water storage, container offers water inlet and steam outlet, steam outlet be positioned at container the highest water storage water level above, be provided with many heat pipes that run through container in the container, heat pipe is bending in container, the arrival end of heat pipe covers on the top of bocca, be provided with air exhauster in the container outside, the air inlet of air exhauster is communicated with the port of export of heat pipe.Air exhauster can adopt centrifugal or axial fan.Under the effect of air exhauster, the thermal current that fuel gas buring produces is inhaled into heat pipe, and the heat pipe temperature raises rapidly, and then makes the water boiling in the container produce steam, and last steam is from the steam outlet output of container.This shows, the thermal current that the utility model utilizes air exhauster to force fuel gas buring to produce enters heat pipe, make the caliber of heat pipe can do lessly, correspondingly tank also can significantly reduce, add heat pipe and in container, be bending, can effectively increase the contact area of heat pipe and water and prolong the flowing time of thermal current in heat pipe, these ameliorative measures make the fire tube structure that originally can only be applied in this class main equipment of boiler to be applied in the bench device, thereby have solved the incrustation scale problem of present Instant heating type small-sized steam generator.

The utility model has the advantages that: 1, solved the incrustation scale problem of Instant heating type small-sized steam generator, no longer imposed use soft water, reduced operating cost, used more conveniently, made Instant heating type small-sized steam generator can be able to large-scale promotion application; 2, output steam is pure, not with water droplets, and the quality of steam height; 3, compare with the Instant heating type small-sized steam generator of existing employing water pipe structure, the heat transfer efficiency height can save energy 40%～50%; 4, the elevated temperature heat air-flow of fuel gas buring generation can drop to below 90 degrees centigrade through the temperature behind the heat pipe, helps improving operating environment.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

The specific embodiment

Referring to Fig. 1, Instant heating type small-sized steam generator includes many row's combustion gas boccas 1, is commonly called as " fire row ".Above bocca 1, be provided with the container 2 of water storage.Container 2 offers water inlet and steam outlet, and water inlet is connecting water intaking valve 3, and steam outlet is connecting steam valve 4.The position of steam outlet is higher than the highest water storage water level of container 2, flows out from steam outlet to avoid the water in the container.Be provided with many heat pipes 5 that run through container up and down in the container 2.The arrival end of heat pipe 5 covers on the top of bocca 1.The top of container 2 is provided with air exhauster 6, and the air inlet of air exhauster 6 is facing to the port of export of heat pipe 5.For under the prerequisite of the caliber that does not increase heat pipe 5, the entrance section that can increase heat pipe 5 as much as possible is long-pending, hot gas in the hope of collection container 2 below fuel gas burings generations most effectively, the arrival end of each the bar heat pipe 5 in the present embodiment is branched into many arm 5a, and the arrival end of each bar arm 5a all covers on the top of bocca 1.The shape of cross section of heat pipe 5 can be various shapes of being convenient to make processing such as circle, rectangle.Heat pipe 5 crooked shape in container 2 can be various curved shapes such as scroll.But as a kind of embodiment preferably, heat pipe 5 is the serpentine trend as shown in the figure container 2 planted agents, can effectively prolong the time of thermal current through heat pipe 5 like this.Further, the bending part of serpentine trend is the right angle preferably, as shown in the figure, so both can effectively prolong the time of thermal current through heat pipe 5, can not increase the flow resistance of thermal current in heat pipe 5 too much again.During steam generator work, combustion gas bocca 1 upwards sprays combustion gas, fuel gas buring produces the elevated temperature heat air-flow, the air exhauster 6 of container 2 tops forces the elevated temperature heat air-flow to enter heat pipe 5 from the arm 5a of each bar heat pipe 5 lower end, discharge from the upper end of heat pipe 5, thermal current is through heating heat pipe 5 in the process of heat pipe 5, again by the water in heat pipe 5 heating containers 2 again, make the water boiling produce steam, last steam is outwards exported through steam valve 4 from the steam outlet at container 2 tops.

In order to improve the security of Instant heating type small-sized steam generator, present embodiment also is provided with blast switch 7, level switch 8, Temperature Detector 9, steam pressure safety valve 10, blowout protection device (not shown), and fully automatic electric sub-controller 11.Blast switch 7 is used to monitor the running status of air exhauster 6, guarantees only just to allow under the situation that air exhauster 6 runs well igniting, otherwise auto extinguishing.Level switch 8 is used to monitor the water level in the container 2, has only the igniting of just allowing when water level is higher than minimum design water level, otherwise auto extinguishing is realized water cut-off protection; When water level is higher than the highest design water level, closes water intaking valve 3 and stop into water; When water level is between minimum design water level and the highest design water level, open water intaking valve 3 automatically, realize automatic water supplement.Temperature Detector 9 is used to monitor the gas flow temperature that flows out from heat pipe 5, and when gas flow temperature raise unusually, Temperature Detector 9 auto extinguishings were realized overheated, overtemperature prote, to avoid because of certain fortuitous event (for example water level detecting inefficacy) the dry combustion method accident taking place.Steam pressure safety valve 10 plays the effect of overvoltage protection, and when the steam pressure in the container 2 surpassed safety value, steam pressure safety valve 10 was opened pressure release automatically, to ensure safety.The blowout protection device plays the effect of accident extinguishing protection, and when causing accident extinguishing because of certain reason, blowout protection device automatic self-closing gas valve is in case the gas leakage accident takes place.Above-mentioned these control procedures are all coordinated control by fully automatic electric sub-controller 11.Fully automatic electric sub-controller 11 can adopt single-chip microcomputer to realize controlling function, can also realize status display function further.For the ease of clean container 2, present embodiment also is connected with blowoff valve 12 in the bottom of container 2.

Above embodiment only is to indicative explaination of the present utility model; not to restriction of the present utility model; on this basis multiple variation or distortion can also be arranged; for example; outside container 2, also can wrap up insulation material; and so on, all have covered the variation of the described technical characterictic of claim or have been out of shape and have all belonged to protection domain of the present utility model.

Claims

1. Instant heating type small-sized steam generator, comprise a plurality of combustion gas boccas, it is characterized in that: the container that above bocca, is provided with water storage, container offers water inlet and steam outlet, steam outlet be positioned at container the highest water storage water level above, be provided with many heat pipes that run through container in the container, heat pipe is bending in container, the arrival end of heat pipe covers on the top of bocca, be provided with air exhauster in the container outside, the air inlet of air exhauster is communicated with the port of export of heat pipe.

2. Instant heating type small-sized steam generator as claimed in claim 1 is characterized in that: the arrival end of heat pipe is branched into many arms, and the arrival end of each bar arm all covers on the top of bocca.

3. Instant heating type small-sized steam generator as claimed in claim 1 is characterized in that: heat pipe is the serpentine trend in container.

4. Instant heating type small-sized steam generator as claimed in claim 3 is characterized in that: the bending part of described serpentine trend is the right angle.