CN208703913U - A kind of energy-saving and environment-friendly premixing boiler - Google Patents

Abstract

A kind of energy-saving and environment-friendly premixing boiler, it includes furnace body, liner, heat exchanging pipe, smoke discharging pipe and air distribution device, the side wall of the furnace body is equipped with air pipe line, fuel gas pipeline, outlet pipe and water inlet pipe, sequentially connected air blower, mixing chamber and combustion chamber are equipped in furnace body, the fuel gas pipeline is connected to air blower；The middle and lower part of furnace body is arranged in the liner, and a part containing mixing chamber and combustion chamber and heat exchanging pipe inside liner, the combustion chamber and mixing chamber are in the middle position of liner；The heat exchanging pipe includes several end to end heat exchanger tubes, and heat exchanger tube is centered on combustion chamber around arrangement；The both ends of heat exchanging pipe are separately connected outlet pipe and water inlet pipe；The air distribution device includes interconnected air distribution ring, with air duct and with wind inlet.Above-mentioned premixing boiler enters mixing chamber by the air of air distribution device supplement preheating, can be improved the thermal efficiency, has the characteristics that combustion efficiency is good, energy saving.

Description

A kind of energy-saving and environment-friendly premixing boiler

Technical field

The utility model relates to heating equipment technical field, especially a kind of energy-saving and environment-friendly premixing boiler.

Background technique

Requirement due to society to environmental protection is increasingly stringent, and substitute products-gas fired-boiler as coal-burning boiler is with it The advantages that pollution is less, the thermal efficiency is high is gradually widely used.Premixed type gas boiler therein is due to that can burn sufficiently, effectively The content for reducing the harmful substances such as carbon monoxide, the nitrogen oxides in flue dust gradually expands in the enterprise of heat supply in need and answers With.It first passes through air blower in advance and is mixed in a certain ratio combustion gas and air using the mode of premixing inverted burning, passes through Metal net shaped burner burns downwards flame, and the temperature in furnace is high, effective heating heat exchanger.

But there are still some problems when in use for existing premixed type gas boiler, combustion chamber is extended downwardly at tubular, The combustion gas such as not effective supply of air in combustion, easily causes incomplete combustion to generate pernicious gas；For another example produced in furnace Raw amount of heat is directly emptied with flue gas there are also considerable thermal energy, is resulted in waste of resources in addition to a part heats heat exchanger tube And environmental pollution.

Utility model content

Technical problem to be solved in the utility model is to overcome the deficiencies of existing technologies, and is provided a kind of energy-saving and environment-friendly pre- Mixing boiler enters mixing chamber by the air of air distribution device supplement preheating, can be improved the thermal efficiency, good with combustion efficiency, Energy saving feature.

The technical issues of the utility model, is realized with following technical proposals:

A kind of energy-saving and environment-friendly premixing boiler, it includes furnace body, liner, heat exchanging pipe, smoke discharging pipe and air distribution device, The side wall of the furnace body is equipped with air pipe line, fuel gas pipeline, outlet pipe and water inlet pipe, is equipped with sequentially connected air blast in furnace body Machine, mixing chamber and combustion chamber, the fuel gas pipeline are connected to air blower；The liner is arranged in the middle and lower part of furnace body, in liner A part and combustion chamber and heat exchanging pipe of mixing chamber are contained in portion, and the combustion chamber and mixing chamber are in the middle position of liner；Institute Stating heat exchanging pipe includes several end to end heat exchanger tubes, and heat exchanger tube is centered on combustion chamber around arrangement；Heat exchanging pipe Both ends are separately connected outlet pipe and water inlet pipe；The air distribution device includes interconnected air distribution ring, with air duct and with wind inlet.

Above-mentioned energy-saving and environment-friendly premixing boiler, the air distribution ring are connected to the middle part of mixing chamber, air distribution ring and mixing chamber Diameter it is equal；Described to be divided into horizontal duct and vertical air duct two parts with air duct, horizontal duct is socketed in air distribution ring in a ring Outside, vertical air duct, which attaches, to be arranged on liner inner wall, and the bottom end in vertical air duct is with wind inlet；The air distribution inlet openings in Bottom of furnace body, and be connected to across furnace wall and liner with air duct.

Above-mentioned energy-saving and environment-friendly premixing boiler, the air distribution ring are the cylinder-like structure of both ends open, are evenly distributed on barrel Aperture.

Above-mentioned energy-saving and environment-friendly premixing boiler, the transverse tube that the smoke discharging pipe stretches out furnace body tilt down setting, transverse tube Interior setting oxygen sensor.

Above-mentioned energy-saving and environment-friendly premixing boiler adds controller, and described controller one end connects oxygen sensor, another End is connected to air blower, and the air blower is frequency conversion air blower.

Above-mentioned energy-saving and environment-friendly premixing boiler, the combustion chamber are the tubular structure that weaving metallic fibers object is formed, cylinder Densely covered reticulated cell on wall.

The air distribution device that the utility model uses provides the air inlet outside another furnace for premixing boiler, mixed to supplement Indoor air capacity is closed, simultaneously because preheating to the air for entering mixing chamber, after heating with air duct setting in side wall of inner Secondary air distribution enter combustion chamber, on the one hand guarantee that air can be such that combustion gas fills than combustion gas surplus 20%-30% in mixed gas Divided combustion reduces the generation of the pernicious gases such as carbon monoxide, nitrogen oxides；On the other hand the temperature for improving mixed gas, avoids In the plain cylindrical furnace of cold environment work, cold air is directly entered furnace interior, absorbs heat in furnace body, increases boiler energy consumption The problem of；Due to making full use of thermal energy, reducing boiler heat loss, the utility model improves the heat of 10%-30% compared with plain cylindrical furnace Efficiency.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of the utility model air distribution device；

Fig. 3 is the structural schematic diagram of the utility model air distribution ring.

Each list of reference numerals in figure are as follows: 1, furnace body, 2, air pipe line, 3, fuel gas pipeline, 4, air blower, 5, mixing chamber, 6, combustion Burn room, 7, liner, 8, heat exchanging pipe, 9, oxygen sensor, 10, outlet pipe, 11, water inlet pipe, 12, smoke discharging pipe, 13, air distribution Road, 14, air distribution ring, 15, match wind inlet, 16, controller.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

As shown in Figure 1, the utility model includes furnace body 1, liner 7, heat exchanging pipe 8 and air distribution device, the sidewall of the furnace body To be equipped with the import of air pipe line 2 and fuel gas pipeline 3, middle part setting outlet pipe 10 and water inlet pipe 11, lower part be smoke exhaust pipe on top Road 12.Sequentially connected air blower 4, mixing chamber 5 and combustion chamber 6 are equipped in furnace body, the air pipe line 2 is connect with air blower, Fuel gas pipeline 3 is connected to the air outlet of air blower, and the air outlet of air blower 4 is connect with mixing chamber 5, the bottom of mixing chamber and burning Room is connected, and the combustion chamber is the tubular structure that weaving metallic fibers object is formed, reticulated cell of gathering on barrel.The liner 7 The middle and lower part of furnace body, the middle-lower part containing heat exchanging pipe 8, combustion chamber 6 and mixing chamber 5 in liner, the combustion chamber 6 are set With mixing chamber 5 in the middle position of liner.The heat exchanging pipe 8 includes several end to end heat exchanger tubes, and heat exchanger tube is to fire Around arrangement centered on burning room.The both ends of heat exchanging pipe are separately connected outlet pipe 10 and water inlet pipe 11, outlet pipe 10 and water inlet pipe 11 extended through liner 7 and furnace body 1 extends to outside furnace body.Smoke discharging pipe 12 is connected to liner and extends to outside furnace body.

The transverse tube that the smoke discharging pipe 12 stretches out furnace body tilts down setting, generates volume condensed water for collecting flue gas condensing And timing is discharged, and prevents it from backflowing in furnace body.Oxygen sensor 9 is set in the transverse tube of smoke discharging pipe, for monitoring flue gas In oxygen content.The utility model further includes controller 16, and 16 one end of controller connects oxygen sensor 9, other end connection To air blower 4, the air blower is frequency conversion air blower, control of the output power by controller 16.

As shown in Figure 2 and Figure 3, the air distribution device includes air distribution ring 14, with air duct 13 and with wind inlet 15, the air distribution Ring 14 is connected to the middle part of mixing chamber 5, and air distribution ring is equal with the diameter of mixing chamber, and air distribution ring is the cylindric knot of both ends open Structure, uniformly distributed aperture on barrel.Described to divide with air duct 13 for horizontal duct and vertical air duct two parts, horizontal duct is socketed in a ring On the outside of air distribution ring, vertical air duct, which attaches, to be arranged on liner inner wall, and the bottom end in vertical air duct is with wind inlet 15.The air distribution Import 15 is opened on bottom of furnace body, and is connected to across furnace wall and liner 7 with air duct.It is connected on furnace wall with wind inlet The intake of wind inlet is matched in controllable register, the angle adjustment by rotating controllable register.Horizontal duct and air distribution with air duct 13 Structure can be such that air more uniformly enters in mixing chamber to ring 14 in a ring, and air and the combustion gas for being conducive to preheating are sufficiently mixed It closes, improves the efficiency of combustion of combustion gas.

The course of work of the utility model is described further below:

In use, opening fuel gas pipeline 3 and water inlet pipe 11, start air blower 4, air and natural gas are preliminary in mixing chamber Mixing, enters combustion chambers burn.Air distribution device is opened, rotation controllable register to opening state, secondary air distribution is from wind inlet 15 enter in furnace body, rising naturally and go upward to air distribution ring 14 along with air duct 13 under the action of exhausting, uplink in the process by Heat radiation is heated in furnace body, and the high-temperature gas of formation enters mixing chamber and natural gas is secondary is sufficiently mixed.

Mixed gas enters combustion chamber and generates one layer of light blue flame on barrel, since barrel temperature is very high, shape At hyperthermia radiation source.Cold water enters the intracorporal heat exchanger tube of furnace through water inlet pipe 11, and the heat that flame combustion generates directly heats surrounding Heat exchanging pipe, be heated into after hot water to be flowed out by outlet pipe 10 and use.The exhaust gas generated after burning is discharged via smoke discharging pipe 12. Oxygen sensor such as detects that oxygen content is excessively high, and report adjusts the electric current of air blower, make its low-power to controller, controller Operating.

Claims (6)

1. a kind of energy-saving and environment-friendly premixing boiler, which is characterized in that it include furnace body (1), liner (7), heat exchanging pipe (8), The side wall of smoke discharging pipe (12) and air distribution device, the furnace body is equipped with air pipe line (2), fuel gas pipeline (3), outlet pipe (10) With water inlet pipe (11), sequentially connected air blower (4), mixing chamber (5) and combustion chamber (6), the fuel gas pipeline are equipped in furnace body (3) it is connected to air blower；The liner (7) is arranged in the middle and lower part of furnace body, a part inside liner containing mixing chamber (5) and Combustion chamber (6) and heat exchanging pipe (8), the combustion chamber and mixing chamber are in the middle position of liner；The heat exchanging pipe (8) includes Several end to end heat exchanger tubes, heat exchanger tube is centered on combustion chamber around arrangement；The both ends of heat exchanging pipe are separately connected out Water pipe (10) and water inlet pipe (11)；The air distribution device include interconnected air distribution ring (14), with air duct (13) and air distribution into Mouth (15).

2. energy-saving and environment-friendly premixing boiler according to claim 1, which is characterized in that the air distribution ring (14) is connected to The middle part of mixing chamber (5), air distribution ring are equal with the diameter of mixing chamber；It is described to be divided into horizontal duct and vertical air duct with air duct (13) Two parts, horizontal duct are socketed in a ring on the outside of air distribution ring, and vertical air duct, which attaches, to be arranged on liner inner wall, vertical air duct Bottom end is with wind inlet (15)；The air distribution inlet openings are connected to air distribution in bottom of furnace body, and across furnace wall and liner (7) Road.

3. energy-saving and environment-friendly premixing boiler according to claim 2, which is characterized in that the air distribution ring (14) is both ends The cylinder-like structure of opening, uniformly distributed aperture on barrel.

4. energy-saving and environment-friendly premixing boiler according to claim 3, which is characterized in that the smoke discharging pipe stretches out furnace body Transverse tube tilt down setting, oxygen sensor (9) are set in transverse tube.

5. energy-saving and environment-friendly premixing boiler according to claim 3, which is characterized in that it adds controller (16), it is described Controller one end connects oxygen sensor (9), and the other end is connected to air blower (4), and the air blower is frequency conversion air blower.

6. energy-saving and environment-friendly premixing boiler according to claim 1-5, which is characterized in that the combustion chamber It (6) is the tubular structure of weaving metallic fibers object formation, reticulated cell of gathering on barrel.