CN206637834U - A kind of gas heater with smoke circulating system - Google Patents
A kind of gas heater with smoke circulating system Download PDFInfo
- Publication number
- CN206637834U CN206637834U CN201720226593.2U CN201720226593U CN206637834U CN 206637834 U CN206637834 U CN 206637834U CN 201720226593 U CN201720226593 U CN 201720226593U CN 206637834 U CN206637834 U CN 206637834U
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- CN
- China
- Prior art keywords
- heat exchanger
- combustion chamber
- flue gas
- secondary heat
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of gas heater with smoke circulating system, including：Combustion chamber, strong drum DC fan, first-class heat exchanger, secondary heat exchanger with combustion chamber, and the master controller being connected with strong drum DC fan；The cold water flowed out in gas heater water inlet pipe is introduced into secondary heat exchanger and exchanged heat, and the water flowed out from secondary heat exchanger enters back into first-class heat exchanger and heated；Characterized in that, being externally provided with the flue gas recirculation passage by secondary heat exchanger and combustion chamber in combustion chamber, the electric control valve for being used for controlling the passage aperture is provided with flue gas recirculation passage, the electric control valve is connected with master controller.During real work, the part of smoke for the cooling that exchanged heat is brought into by flue gas recirculation passage, electric control valve by combustion chamber, the oxygen concentration in chamber temperature and dilute gas mixture is reduced, had both improved hot water efficiency, and also reduced the discharge of nitrogen oxides.
Description
Technical field
It the utility model is related to gas heater technical field, more particularly to a kind of gas and hot water with smoke circulating system
Device.
Background technology
Gas heater is a kind of using combustion gas as fuel, is transferred heat to by combustion heating mode and flows through heat exchange
To reach a kind of gas appliance for the purpose for preparing hot water in the cold water of device.Existing gas heater can produce at work
NOx, NO under fired state especially under high load capacityxGrowing amount can significantly improve.And in the prior art, caused by gas heater
Flue gas is mostly directly discharged in air again, causes air pollution, inadequate energy-saving and emission-reduction.
The content of the invention
For defect present in prior art, the purpose of this utility model is to provide a kind of energy utilization rate height, nitrogen
The few gas heater of emissions of oxides.
To achieve the above objectives, the utility model adopts the following technical scheme that.
A kind of gas heater with smoke circulating system, including：Combustion chamber, the strong drum direct current wind with combustion chamber
Machine, first-class heat exchanger, secondary heat exchanger, and the master controller being connected with strong drum DC fan；In gas heater water inlet pipe
The cold water of outflow is introduced into secondary heat exchanger and exchanged heat, and the water flowed out from secondary heat exchanger enters back into first-class heat exchanger progress
Heating；Characterized in that, being externally provided with the flue gas recirculation passage by secondary heat exchanger and combustion chamber in combustion chamber, followed in flue gas
Ring passage is provided with the electric control valve for being used for controlling the passage aperture, and the electric control valve is connected with master controller.
As with improvement, the strong drum DC fan is connected to the bottom of combustion chamber, the flue gas of the flue gas recirculation passage
Guiding port is arranged on the side of secondary heat exchanger, and the air outlet of the exhanst gas outlet of flue gas recirculation passage and strong drum DC fan connects
It is logical.
As with improvement, the first-class heat exchanger, secondary heat exchanger are all arranged on above combustion chamber and from top to bottom successively
Arrangement.
During real work, the master controller is opened according to the change electric control valve of different sizes of strong drum DC fan rotating speed
Degree, strong drum DC fan rotating speed is bigger, and the aperture of electric control valve is bigger, automatically controlled when strong drum DC fan rotating speed reaches maximum
The aperture of air valve also reaches maximum, and when strong drum DC fan rotating speed reaches minimum, electric control valve is closed.
The beneficial effects of the utility model are：
First, the part of smoke for the cooling that exchanged heat is brought into by flue gas recirculation passage, electric control valve by combustion chamber, dilution is mixed
The oxygen concentration in gas is closed, hot water efficiency had both been improved, and had also reduced the discharge of nitrogen oxides.
2nd, because the flue gas importeding into the air outlet of strong drum DC fan is the flue gas after cooling, effectively avoid high temperature,
Pinking that high pressure smoke backflow is brought, deflagration phenomenon, securely and reliably.And the typically up to upper Baidu of the flue gas not cooled, directly draw
The danger caught fire in advance can be occurred when entering flue gas recirculation passage, while the too high igniting of gas one of temperature will pinking.
3rd, the aperture of electric control valve changes according to the difference of strong drum DC fan rotating speed size, and regulation in real time enters combustion
The exhaust gas volumn of room, and then temperature, oxygen content during change burning are burnt, can more efficiently suppress the generation of nitrogen oxides.
Brief description of the drawings
Fig. 1 show gas heater structural representation provided by the utility model.
Description of reference numerals：
1：Combustion chamber, 2：Strong drum DC fan, 3：First-class heat exchanger, 4：Secondary heat exchanger, 5：Flue gas recirculation passage, 6：Electricity
Air control valve, 7：Master controller.
Embodiment
Essence of the present utility model is more fully understood for convenience of those skilled in the art, it is new to this practicality below in conjunction with the accompanying drawings
The embodiment of type is described in detail.
As shown in figure 1, a kind of gas heater with smoke circulating system, including：Combustion chamber 1, it is connected with combustion chamber 1
Strong drum DC fan 2, first-class heat exchanger 3, secondary heat exchanger 4, secondary heat exchanger 4 is led to the flue gas recirculation that combustion chamber 1 connects
Road 5, it is arranged on and is used for the electric control valve 6 for controlling the passage aperture on flue gas recirculation passage 5, and DC fan 2, electricity is roused with strong
The master controller 7 that air control valve 6 connects.
Wherein, the strong drum DC fan 2 is connected to the bottom of combustion chamber 1.The first-class heat exchanger 3, secondary heat exchanger 4
All it is arranged on the top of combustion chamber 1 and arranges successively from top to bottom.The flue gas guiding port of the flue gas recirculation passage 5 is arranged on two level
The right side of heat exchanger 4, the exhanst gas outlet of flue gas recirculation passage 5 connect with the air outlet of strong drum DC fan 2.
The gas heater with smoke circulating system that the present embodiment provides, its operation principle are as follows：
When gas water heater working burns, secondary heat exchanger 4 first exchanges heat to the cold water in gas heater water inlet pipe,
Hot water after heat exchange, which is entered back into after first-class heat exchanger 3 is heated, to flow out.When strong drum DC fan 2, which is in, to run at high speed, combustion
Gas water heater, which is under high load capacity, to burn, and now master controller 7 controls electric control valve 6 to open, and leader flue gas enters flue gas
Circulation canal 5, flue gas dilution are blended in the gas that strong drum DC fan blasts, reduce oxygen concentration, suppress nitrogen oxides NOx
Generation.When gas heater burns at low load, strong drum DC fan rotating speed reduces, the now oxygen in air and combustion
More abundant, the nitrogen oxides NO of gas burningxGenerate it is relatively low, electric control valve close, do not reboot flue gas and enter combustion chamber.
A kind of gas heater with smoke circulating system that the present embodiment provides has following two benefits：1) using high
Warm flue gas carries out heating to cold water and enters back into first-class heat exchanger heating, dual-heated, improves hot water efficiency.2) dropped significantly after exchanging heat
Low cigarette temperature, smoke backflow to combustion chamber will not also produce pinking.And controlled and flowed back by electric control valve when guiding smoke backflow
Amount, the size situation that this electric control valve judges complete machine burning load by rousing DC fan rotating speed by force, except that can open and close,
Also aperture can be adjusted, makes mixed gas burning more abundant.When burning under high loads, electric control valve is opened and reaches maximum and opens
Degree；When burning load reduces, strong drum DC fan spin down, electric control valve aperture diminishes；Burnt when with minimum load, it is automatically controlled
Air valve is closed, and is not rebooted smoke backflow, such a control form, is more effectively suppressed the generation of nitrogen oxides.
Essence of the present utility model is described in detail above embodiment, but can not be come with this to this reality
Limited with new protection domain.It should be evident that under the enlightenment of the utility model in essence, the common skill of the art
Art personnel can also carry out many improvement and modification, for example set the condensing heat-exchange chamber being connected with combustion chamber, the secondary heat exchanger
It is arranged on condensing heat-exchange intracavitary etc..It should be noted that these are improved and modification all falls in claim of the present utility model
Within protection domain.
Claims (3)
1. a kind of gas heater with smoke circulating system, including：Combustion chamber, strong drum DC fan with combustion chamber,
First-class heat exchanger, secondary heat exchanger, and the master controller being connected with strong drum DC fan；Flowed out in gas heater water inlet pipe
Cold water be introduced into secondary heat exchanger and exchanged heat, the water flowed out from secondary heat exchanger enters back into first-class heat exchanger and added
Heat；Characterized in that, the flue gas recirculation passage by secondary heat exchanger and combustion chamber is externally provided with combustion chamber, in flue gas recirculation
Passage is provided with the electric control valve for being used for controlling the passage aperture, and the electric control valve is connected with master controller.
2. gas heater according to claim 1, it is characterised in that the strong drum DC fan is connected to combustion chamber
Bottom, the flue gas guiding port of the flue gas recirculation passage are arranged on the side of secondary heat exchanger, and the flue gas of flue gas recirculation passage goes out
Mouth connects with the air outlet of strong drum DC fan.
3. gas heater according to claim 1, it is characterised in that the first-class heat exchanger, secondary heat exchanger are all pacified
Arrange from top to bottom above combustion chamber and successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720226593.2U CN206637834U (en) | 2017-03-09 | 2017-03-09 | A kind of gas heater with smoke circulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720226593.2U CN206637834U (en) | 2017-03-09 | 2017-03-09 | A kind of gas heater with smoke circulating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206637834U true CN206637834U (en) | 2017-11-14 |
Family
ID=60252119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720226593.2U Expired - Fee Related CN206637834U (en) | 2017-03-09 | 2017-03-09 | A kind of gas heater with smoke circulating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206637834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871445A (en) * | 2017-03-09 | 2017-06-20 | 广东万家乐燃气具有限公司 | A kind of gas heater with smoke circulating system |
-
2017
- 2017-03-09 CN CN201720226593.2U patent/CN206637834U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871445A (en) * | 2017-03-09 | 2017-06-20 | 广东万家乐燃气具有限公司 | A kind of gas heater with smoke circulating system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 Termination date: 20200309 |