CN206771749U - Two backhaul indirect condensing hot-water boilers - Google Patents
Two backhaul indirect condensing hot-water boilers Download PDFInfo
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- CN206771749U CN206771749U CN201720465281.7U CN201720465281U CN206771749U CN 206771749 U CN206771749 U CN 206771749U CN 201720465281 U CN201720465281 U CN 201720465281U CN 206771749 U CN206771749 U CN 206771749U
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- shell
- water
- combustion chamber
- flue
- heat exchanger
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Abstract
The utility model discloses the backhaul indirect condensing hot-water boiler of one kind two in thermal apparatus field, flue is provided with the shell of its horizontal setting, flue inner chamber forms combustion chamber, and burner is connected with combustion chamber, some smoke pipes are provided with shell, in shell water cavity is left positioned at combustion chamber periphery and smoke pipe periphery, shell is provided with smoke box, is connected with flue on the upside of smoke box, burner is arranged on combustion chamber one end, the other end is provided with return combustion chamber, and smoke pipe connects return combustion chamber and smoke box；Air and flue are connected in the import of blower fan；The condensed device of flue connects air；Heat exchanger is provided with shell, leaving condenser water mouth connects heat exchanger tube pass import, and condenser water inlet is connected in heat exchanger tube pass outlet through heat user, water circulating pump, and shell top is provided with expansion tank.The recyclable partial fume of air intake of the boiler, the nitrogen content in combustion air is reduced, and realize the raising of EAT, it is final to realize environmental protection and energy-conservation.The device is mainly for the production of hot water.
Description
Technical field
It the utility model is related to a kind of hot water production device, more particularly to a kind of gas fired-boiler.
Background technology
In the prior art, there are a kind of backhaul type condensing normal pressure hot water boiler of integral type two, its number of patent application：
201220403775.X the applying date：2012-08-15, publication number：CN202902619U, publication date： 2013-04-24.The dress
Put using horizontal two return-stroke types structure, its burner is output to burner hearth left end, burner hearth right-hand member connection return combustion chamber, and return combustion chamber right-hand member is used
T connector connects bottom surface, and bottom surface is provided with spring type safety explosion proof door, and return combustion chamber connects front smoke box by convection bank to the left,
Front smoke box is located at condenser overhead upwardly through connection flue to condenser, condenser exhanst gas outlet；The steel combined with aluminum of condenser
Finned tube is in in-line or staggered arrangement, and steel-aluminum composite fin tube both ends are welded into aquaporin with condenser shell with L-shaped water collection sheet.
The horizontal two return-stroke types structure of the boiler and the setting rational in infrastructure of the steel-aluminum composite fin tube of condenser take full advantage of heat energy
Grade, fume afterheat, improve boiler efficiency to a certain extent so that boiler structure is more reasonable, and heat conductivility is more preferable, together
When improve boiler life.It is disadvantageous in that：The NOx emission of the boiler is higher, and the efficiency of utilization of flue gas is still relatively low；
Prolonged outer circulation uses so that stove water quality is poor, easy fouling.
Utility model content
The purpose of this utility model is to provide a kind of two backhaul indirect condensing hot-water boilers, can be directly by partial fume
Recycling, reach energy-saving purpose, meanwhile, boiler uses relatively reliable.
What the purpose of this utility model was realized in：A kind of two backhaul indirect condensing hot-water boilers, including shell, shell
Interior to be provided with flue, flue inner chamber forms combustion chamber, and burner is connected with combustion chamber, is provided with some smoke pipes in shell, in shell
Leave water cavity positioned at combustion chamber periphery and smoke pipe periphery, shell is provided with smoke box, is connected with flue on the upside of smoke box, the shell and
The horizontal setting in combustion chamber, burner are arranged on combustion chamber one end, and the combustion chamber other end is provided with return combustion chamber, and some smoke pipes are set
On the outside of flue, return combustion chamber and smoke box are connected in the both ends of smoke pipe；Burner is connected with the air outlet of blower fan, and the import of blower fan has two
Road, connects air all the way, and another way connects flue through cigarette airduct；Flue upwardly extends the gas approach for connecting condenser, condensation
The exhanst gas outlet of device connects air；Heat exchanger is provided with positioned at the overall top of smoke pipe and flue in shell, heat exchanger includes some
Heat exchanger tube, heat exchanger tube are horizontally through shell, and leaving condenser water mouth connects heat exchanger tube pass import, and heat exchanger tube pass outlet is used through heat
Family, water circulating pump connect condenser water inlet, and shell top is provided with expansion tank.
The boiler of the structure is by the way that heat user is circulated between condenser, heat exchanger with water, by shell
Stove water is isolated with heat user with water tank, on the one hand, the stove water storage in shell is few, is easy to the acid-base value of stove water to adjust, to keep away
Exempt from fouling and corrosion；On the other hand, can be straight to user due to by the way of indirect heating, the quality of user's water can be improved
Supply soft water is connect, avoids the harmful effect for carrying ion in stove water secretly.In addition, by cigarette airduct, return the air intake of blower fan
Receiving portions flue gas, this configuration mode, primarily serve the effect of two aspects：(1) normal combustion required air quantity, with high temperature cigarette
Gas is mixed, and reduces the nitrogen content in combustion air, and NO is reduced so as to realizeXDischarge.(2) refluxing portion heat smoke（240~270
℃）With normal temperature air（25℃）It is sufficiently mixed, forms hot-air needed for burner combustion（60~80 DEG C）.So as to realize into wind-warm syndrome
The raising of degree, realize higher efficiency of combustion；, finally can be by boiler NO using the Burner Technology of flue gas recirculationXDischarge
Concentration drops to 30mg/Nm3Hereinafter, after by energy-saving appliance, the exhaust gas temperature of boiler is reduced within 80 DEG C, and design thermal efficiency is up to
96%, flue gas is in two drawback movements, and environmental protection and energy-conservation can be achieved.The device is mainly for the production of hot water.
As further improvement of the utility model, control is respectively equipped with the air intlet of the blower fan and on cigarette airduct
Valve.The aeration ratio of flue gas and air can be controlled by control valve, the control valve preferred proportion regulating valve.
As further improvement of the utility model, the cigarette airduct is provided with corrugated connection.Corrugated connection adapts to heat
The change of swollen shrinkage, Blower Housing is avoided by larger internal stress.
As further improvement of the utility model, the heat exchanger is double back pass heat exchanger.The double back pass heat exchanger is
One kind of shell style heat exchanger, the water (flow) direction of its half heat exchanger tube and second half heat exchanger tube is on the contrary, by by a termination
It is isolated into water and goes out hydrospace and be achieved, its tube side import and tube side outlet is arranged on same one end, and the heat exchanger tube external space is
The water cavity of shell.
For ease of the acid water being condensed out in flue gas is discharged, the condenser bottom is provided with condensed water discharge outlet.
As further improvement of the utility model, the flue is in the horizontal direction in corrugated.Corrugated flue tool
There is adaptation to expand with heat and contract with cold, avoid the occurrence of excessive internal stress, ensure that the use of device is reliable.
As further improvement of the utility model, the blower fan may be provided at shell top or be arranged under shell side
Portion.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the utility model.
Fig. 2 is Fig. 1 left view.
Fig. 3 is another structural representation of the present utility model.
Wherein, 1 shell, 2 flues, 3 blower fans, 4 burners, 5 cigarette airducts, 6 smoke boxes, 7 heat exchanger tubes, 8 flues, 9 condensers, 10
Leaving condenser water mouth, 11 condenser water inlets, 12 exhanst gas outlets, 13 water circulating pumps, 14 expansion tanks, the outlet of 15 tube sides, 16 pipes
Journey import, 17 heat exchangers, 18 return combustion chambers, 19 smoke pipes, 20 water cavities, 21 combustion chambers, 22 condensed water discharge outlets, 23 control valves, 24 is empty
Gas import, 25 corrugated connections.
Embodiment
Embodiment 1
As shown in Figure 1-2, it is a kind of two backhaul indirect condensing hot-water boilers, is provided with flue 2 in its shell 1, flue 2 is in water
Square upwards in corrugated, the inner chamber of flue 2 forms combustion chamber 21, and burner 4 is connected with combustion chamber 21, if being provided with shell 1
Dry smoke pipe 19, shell 1 is interior to leave water cavity 20 positioned at the periphery of combustion chamber 21 and the periphery of smoke pipe 19, and shell 1 is provided with smoke box 6, smoke box 6
Upside is connected with flue 8, the 21 horizontal setting of the shell 1 and combustion chamber, and burner 4 is arranged on the one end of combustion chamber 21, combustion chamber
21 other ends are provided with return combustion chamber 18, and some smoke pipes 19 are arranged on the outside of flue 2, and the He of return combustion chamber 18 is connected at the both ends of smoke pipe 19
Smoke box 6；Burner 4 is connected with the air outlet of blower fan 3, and blower fan 3 sets the side lower part of shell 1, and the import of blower fan 3 has two-way, all the way
Air is connected, another way connects flue 8 through cigarette airduct 5；Flue 8 upwardly extends the gas approach for connecting condenser 9, condenser 9
Exhanst gas outlet 12 connect air, the bottom of condenser 9 is provided with condensed water discharge outlet 22；It is whole positioned at smoke pipe 19 and flue 2 in shell 1
The top of body is provided with heat exchanger 17, and heat exchanger 17 includes some heat exchanger tubes 7, and heat exchanger tube 7 is horizontally through shell 1, leaving condenser water
Mouth 10 connects the tube side imports 16 of heat exchanger 17, and the tube side of heat exchanger 17 outlet 15 is connected condenser through heat user, water circulating pump 13 and entered
The mouth of a river 11, the top of shell 1 are provided with expansion tank 14.Heat exchanger 17 is double back pass heat exchanger 17.The double back pass heat exchanger 17 is
One kind of shell style heat exchanger, the water (flow) direction of its half heat exchanger tube and second half heat exchanger tube is on the contrary, by by a termination
It is isolated into water and goes out hydrospace and be achieved, its tube side import 16 and tube side outlet 15 is arranged on same one end, the outer space of heat exchanger tube 7
Between be shell 1 water cavity 20.
The boiler of the structure is by the way that heat user is circulated between condenser 9, heat exchanger 17 with water, by shell 1
Interior stove water is isolated with heat user with water tank, on the one hand, and the stove water storage in shell 1 is few, is easy to the acid-base value of stove water to adjust,
To avoid fouling and corrosion；On the other hand, due to by the way of indirect heating, the quality of user's water can be improved, can to
Soft water is directly supplied at family, avoids the harmful effect for carrying ion in stove water secretly.In addition, by cigarette airduct 5, make the air intake of blower fan 3
With recovery section flue gas, this configuration mode, the effect of two aspect can be primarily served：(1) normal combustion required air quantity, with
High-temperature flue gas is mixed, and reduces the nitrogen content in combustion air, and NO is reduced so as to realizeXDischarge.(2) refluxing portion heat smoke（240
~270 DEG C）With normal temperature air（25℃）It is sufficiently mixed, forms burner 4 and burn required hot-air（60~80 DEG C）.So as to realize
The raising of EAT, realize higher efficiency of combustion；, finally can be by boiler using the technology of burner 4 of flue gas recirculation
NOXConcentration of emission drops to 30mg/Nm3Hereinafter, after by energy-saving appliance, the exhaust gas temperature of boiler is reduced within 80 DEG C, designs thermal effect
Rate is up to 96%, final to realize environmental protection and energy-conservation.The device is mainly for the production of hot water.
Embodiment 2
As shown in figure 3, for another two backhaul indirect condensing hot-water boilers, it is with the difference of embodiment 1, the dress
Blower fan 3 in putting is arranged on the top of shell 1；Control valve 23 is respectively equipped with the air intlet 24 of blower fan 3 and on cigarette airduct 5, is led to
The aeration ratio of flue gas and air can be controlled by crossing control valve 23, and the control valve 23 is ratio adjusting valve, and ripple is additionally provided with cigarette airduct
Line joint 25.
The utility model is not limited to above-described embodiment, on the basis of technical scheme disclosed in the utility model, this
The technical staff in field is according to disclosed technology contents, it is not necessary to which performing creative labour can is special to some of which technology
Sign makes some and replaces and deform, and these are replaced and deformed in the scope of protection of the utility model.
Claims (7)
1. a kind of two backhaul indirect condensing hot-water boilers, including shell, shell is interior to be provided with flue, and flue inner chamber forms combustion chamber,
Burner is connected with combustion chamber, some smoke pipes are provided with shell, is located at combustion chamber periphery in shell and water is left in smoke pipe periphery
Chamber, shell are provided with smoke box, flue are connected with the upside of smoke box, it is characterised in that：The horizontal setting of the shell and combustion chamber, burning
Device is arranged on combustion chamber one end, and the combustion chamber other end is provided with return combustion chamber, and some smoke pipes are arranged on the outside of flue, and the two of smoke pipe
The logical return combustion chamber of termination and smoke box；Burner is connected with the air outlet of blower fan, and the import of blower fan has two-way, connects air all the way, separately
All the way flue is connected through cigarette airduct；Flue upwardly extends the gas approach for connecting condenser, and the exhanst gas outlet of condenser is connected greatly
Gas；Heat exchanger is provided with positioned at the overall top of smoke pipe and flue in shell, heat exchanger includes some heat exchanger tubes, and heat exchanger tube is laterally worn
Shell is crossed, leaving condenser water mouth connects heat exchanger tube pass import, and condensation is connected in heat exchanger tube pass outlet through heat user, water circulating pump
Device water inlet, shell top are provided with expansion tank.
2. two backhauls indirect condensing hot-water boiler according to claim 1, it is characterised in that：The air intlet of the blower fan
Control valve is respectively equipped with place and cigarette airduct.
3. two backhauls indirect condensing hot-water boiler according to claim 2, it is characterised in that：The cigarette airduct is provided with ripple
Line joint.
4. the two backhaul indirect condensing hot-water boilers according to claim any one of 1-3, it is characterised in that：The heat exchanger
For double back pass heat exchanger.
5. the two backhaul indirect condensing hot-water boilers according to claim any one of 1-3, it is characterised in that：The condenser
Bottom is provided with condensed water discharge outlet.
6. the two backhaul indirect condensing hot-water boilers according to claim any one of 1-3, it is characterised in that：The flue exists
In corrugated in horizontal direction.
7. the two backhaul indirect condensing hot-water boilers according to claim any one of 1-3, it is characterised in that：The blower fan is set
Put on shell top or be arranged on shell side lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720465281.7U CN206771749U (en) | 2017-04-28 | 2017-04-28 | Two backhaul indirect condensing hot-water boilers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720465281.7U CN206771749U (en) | 2017-04-28 | 2017-04-28 | Two backhaul indirect condensing hot-water boilers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206771749U true CN206771749U (en) | 2017-12-19 |
Family
ID=60635175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720465281.7U Active CN206771749U (en) | 2017-04-28 | 2017-04-28 | Two backhaul indirect condensing hot-water boilers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206771749U (en) |
-
2017
- 2017-04-28 CN CN201720465281.7U patent/CN206771749U/en active Active
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