CN2197623Y - Water boiler with vertical circulating pipes - Google Patents

Abstract

The utility model relates to a normal pressure water heating boiler with higher thermal efficiency, which is characterized in that each rectangular section heating pipe in the high temperature zone of a hearth is connected with a circulating pipe, and the upper part of each circulating pipe is communicated with the upper part of a boiler body water jacket by conflux pipes. Thus, water in the water jacket can be continuously and circularly passed through the heating pipes, and temperature difference between the water and thermal source in the heating pipes is increased. Thermal conduction is accelerated, and thermal efficiency is enhanced. Simultaneously, the boiler is also provided with a sandwich layer smoke pipe with a hollow leaf of a larger heating area, and the temperature of the water in the sandwich layer rises by absorbing the residual heat of smoke gas. The hearth of the boiler is also provided with an outer connecting smoke opening which is convenient for further raise of heat efficiency and energy saving.

Description

Water boiler with vertical circulating pipes

The utility model belongs to heating cooking stove apparatus field, relates to a kind of normal-pressure hot-water boiler of energy savings, and it is mainly used in small-sized heating system.

The vertical type water heater boiler that existing small-sized heating system adopts, its basic pattern are that furnace water jacket constitutes boiler body, are burner hearth in it, and fuel heats the water in the water jacket in the burner hearth internal combustion.Some horizontal circles cross section heating tube is generally all arranged in the burner hearth of this boiler, the water jacket both sides are communicated with, the water in the pipe is heated in the burner hearth high-temperature region, helps to improve the thermal efficiency of boiler.But because the heating tube two ends mouth of pipe is at same horizontal level, the hydraulic pressure that is subjected to equates, the outflow of can not rising smoothly after water in the pipe is heated can only be after being warmed up to a certain degree, because volumetric expansion is extruded from the two ends mouth of pipe, the water in the water jacket just can add in the heating tube.Because the water in the heating tube is flow circuit continuously, make the not lower part of temperature in the whole water of boiler always of this part water, the relative temperature difference of water and furnace flame is always maximum, thereby makes heat conduction velocity can not reach possible maximum.So just limit the further raising of boiler thermal output, be unfavorable for energy savings more.

The purpose of this utility model provides a kind of vertical normal-pressure boiler that improves structure, water can constantly be heated circularly in the burner hearth high-temperature region, and adopt other aggregate measures further to improve boiler thermal output, energy savings.

The purpose of this utility model reaches as follows: upwards pick out a vertical circulation pipe at the middle part of each heating tube, the top of circulation pipe and a horizontal collecting pipe are connected, and collecting pipe two ends and water jacket are connected.The water that the water jacket temperature of lower is lower like this flows into heating tube, after being heated intensification, rely on gravitational difference upwards to flow into collecting pipe by circulation pipe automatically, flowed in the higher water of water jacket upper strata temperature by the collecting pipe two ends, the water that the water jacket temperature of lower is lower continues to flow into heating tube again.So the water that forms in the heating tube circulates continuously, makes the water relatively low part of temperature in the whole water of boiler always in the heating tube, thereby has strengthened the temperature difference with flame, has accelerated hot conduction, has improved the thermal efficiency.For the water in the heating tube can be heated rapidly, accelerate circulation rate, heating tube adopts the square-section, makes identical pipe internal volume, and than the big surperficial heating surface area of the circular section Guan Yougeng of present use, the water in it can heat up quickly.Discharge the waste heat of flue gas in order to make full use of boiler, this boiler has also increased by one section interlayer smoke pipe.Also be full of water in the interlayer, it respectively has a hot-water line to be communicated with water jacket top in two ends up and down, and the water in the water jacket enters the smoke pipe interlayer thus, after the absorption fume afterheat further heats up, by the delivery port inflow heating system on interlayer top.There are some hollow blades interlayer flue inside, thereby has increased the heating surface area of water in the interlayer, helps absorbing more waste heat.Interlayer flue and two hot-water lines all can dismounting, with convenient carrying.In order to be used with other stove and accessory, the burner hearth middle part also has an external mouth, can join with the exhaust opening of other stove and accessory, so both saved the chimney of other stove and accessory, heat in the flue gas that other kitchen range discharge also can partly be utilized, water in the heating boiler reaches the effect of synthesis energy saving.This external mouth not the time spent can block, do not influence the performance of boiler itself.

Characteristics of the present utility model are with advantage: owing to be connected circulation pipe on heating tube, the water that just flows through the boiler high temperature district is whole minimum relatively parts of temperature in the water always, have increased the temperature difference with thermal source, have accelerated hot conduction, have improved the thermal efficiency.This utility model has also comprehensively adopted the square-section heating tube, and inside has the interlayer smoke pipe of hollow blade, and structures such as external mouth have further improved boiler thermal output, energy savings.Owing to thermal efficiency height, boiler volume can reduce, weight can alleviate, and has reduced manufacturing cost simultaneously.

Below in conjunction with accompanying drawing concrete structure of the present utility model is described in further detail:

Accompanying drawing 1 is the longitudinal profile schematic diagram of vertical circulation pipe boiler.

Fig. 2 is the cutting plane schematic diagram along A-A line among Fig. 1.

Fig. 3 is the cutting plane schematic diagram along B-B line among Fig. 1.

Identical label is represented same structure member among each figure.

Among Fig. 1,＜1〉is furnace water jacket, and＜2〉are the burner hearth in it, and＜3〉are fire grate, and＜4〉are the boiler feed water mouth, and it is connected with the heating system return pipe.＜5〉for being arranged in the rectangle heating tube of burner hearth＜2〉high-temperature region, its two ends are communicated with water jacket＜1 〉.The center of heating tube＜5〉is connecting circulation pipe＜6 〉, and the upper end of each circulation pipe＜6〉is communicated with collecting pipe＜7 〉, and collecting pipe＜7〉two ends are communicated with water jacket＜1〉top.From Fig. 3, water jacket＜1〉as can be seen, heating tube＜5 〉, the connected relation between the circulation pipe＜6 〉.The lower water of water jacket＜1〉temperature of lower like this, enter in the heating tube＜5 〉, after the high-temperature region of burner hearth＜2〉is heated, by circulation pipe＜6 〉, collecting pipe＜7〉flows in the higher water of water jacket＜1〉upper temp, and the lower water of lower floor's temperature adds in the heating tube＜5〉in the water jacket＜1 〉, forms circulation continuously, thereby has realized major function of the present utility model.For utilizing fume afterheat further to improve the thermal efficiency, burner hearth＜8〉suitable for reading locates also removably to overlap then interlayer smoke pipe＜9 〉, the water on water jacket＜1〉top enters the interlayer of smoke pipe＜9〉by two hot-water lines＜10 〉, absorbs the waste heat back of further heating up and enters heating system by delivery port＜11 〉.Hollow blade＜12〉on the interlayer smoke pipe＜9〉increases heating surface area, helps fume afterheat and conducts to the water in the interlayer smoke pipe＜9 〉.As can be seen from Figure 2 the shape of the hollow blade＜12〉in the interlayer smoke pipe＜9〉for ease of dismounting interlayer smoke pipe＜9 〉, all is equipped with detachable connector＜13〉on two hot-water lines＜10 〉.＜14〉be the external mouth at burner hearth＜2〉middle part, be used to connect the outlet flue of other stove and accessory, can save the chimney of other stove and accessory, can utilize the fume afterheat of other stove and accessory again.External mouth＜14〉can block up when not using, and does not influence the use of boiler.

Claims (4)

1, a kind of with furnace water jacket＜1〉be the hot-water boiler of body, it is characterized in that burner hearth＜2〉in, two ends and water jacket＜1〉each heating tube＜5 that are communicated with on be connected circulation pipe＜6, each circulation pipe＜6〉top and collecting pipe＜7 be communicated with, and collecting pipe＜7 two ends and water jacket＜1 top is communicated with.

2, the hot-water boiler of stipulating by claim 1,＜8〉suitable for reading that it is characterized in that burner hearth＜2〉locate removably to overlap the interlayer smoke pipe＜9〉that then has hollow blade＜12 〉, and hot-water line＜10〉is communicated with water jacket＜1〉by detachable connector＜13〉with interlayer smoke pipe＜9 〉.

3, by the hot-water boiler of claim 1 regulation, the cross section that it is characterized in that heating tube＜5〉is a rectangle.

4,, it is characterized in that burner hearth＜2〉middle part has an external mouth＜14〉by the hot-water boiler of claim 1 regulation.

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