CN106871445A - A kind of gas heater with smoke circulating system - Google Patents
A kind of gas heater with smoke circulating system Download PDFInfo
- Publication number
- CN106871445A CN106871445A CN201710137748.XA CN201710137748A CN106871445A CN 106871445 A CN106871445 A CN 106871445A CN 201710137748 A CN201710137748 A CN 201710137748A CN 106871445 A CN106871445 A CN 106871445A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- combustion chamber
- control valve
- fan
- flue gas
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Abstract
The present invention 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 is 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 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 of the cooling that exchanged heat is brought into by flue gas recirculation passage, electric control valve by combustion chamber, reduce the oxygen concentration in chamber temperature and dilute gas mixture, both improve hot water efficiency, also reduce the discharge of nitrogen oxides.
Description
Technical field
The present invention relates to gas heater technical field, more particularly to a kind of gas heater with smoke circulating system.
Background technology
Gas heater is a kind of using combustion gas as fuel, transfers heat to flow through heat exchange by combustion heating mode
A kind of gas appliance of the purpose of hot water is prepared in the cold water of device to reach.Existing gas heater can operationally be produced
NOx, especially NO under fired state under high load capacityxGrowing amount can be significantly improved.And in the prior art, what gas heater was produced
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, it is an object of the invention to provide a kind of energy utilization rate is high, nitrogen oxidation
Thing discharges few gas heater.
To achieve the above objectives, the present invention is adopted 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 is exchanged heat, and the water flowed out from secondary heat exchanger enters back into first-class heat exchanger to be carried out
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 controlling the passage aperture, and the electric control valve is connected with master controller.
Used as with improvement, the strong bulging 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 exhanst gas outlet of flue gas recirculation passage connects with the air outlet of strong drum DC fan
It is logical.
Used as with improvement, the first-class heat exchanger, secondary heat exchanger are all arranged on combustion chamber top and from top to bottom successively
Arrangement.
Used as with improvement, 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 invention are as follows：
First, the part of smoke of 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 improve, the discharge of nitrogen oxides is also reduced.
2nd, because the flue gas importeding into the air outlet of strong drum DC fan is the flue gas after cooling, be prevented effectively from high temperature,
Pinking, deflagration phenomenon that high pressure smoke backflow brings, it is safe and reliable.And the flue gas do not lowered the temperature is typically up to Baidu, directly draw
The danger caught fire in advance can occur, while the too high igniting of gas one of temperature will pinking when entering flue gas recirculation passage.
3rd, the aperture of electric control valve changes according to the difference of strong drum DC fan rotating speed size, and real-time regulation 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 the gas heater structural representation of present invention offer.
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.
Specific embodiment
Essence of the invention is more fully understood for convenience of those skilled in the art, below in conjunction with the accompanying drawings to of the invention specific
Implementation method is described in detail.
As shown in figure 1, a kind of gas heater with smoke circulating system, including：Combustion chamber 1, is connected with combustion chamber 1
Strong drum DC fan 2, first-class heat exchanger 3, secondary heat exchanger 4, the flue gas recirculation that secondary heat exchanger 4 is connected with combustion chamber 1 is led to
Road 5, is arranged on flue gas recirculation passage 5 for controlling the electric control valve 6 of the passage aperture, and rouse DC fan 2, electricity with strong
The master controller 7 of the connection of air control valve 6.
Wherein, the strong bulging 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 grades
The right side of heat exchanger 4, the exhanst gas outlet of flue gas recirculation passage 5 is connected with the air outlet of strong drum DC fan 2.
The gas heater with smoke circulating system that the present embodiment is provided, its operation principle is 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 entered back into and flowed out after first-class heat exchanger 3 is heated.When strong drum DC fan 2 is in run at high speed, combustion
Gas water heater is burnt under being in high load capacity, and the now control of master controller 7 electric control valve 6 is opened, and leader flue gas enters flue gas
Circulation canal 5, flue gas dilution is blended in the gas that strong drum DC fan is blasted, and reduces oxygen concentration, suppresses nitrogen oxides NOx
Generation.When gas heater burns at low load, strong drum DC fan rotating speed reduction, the now oxygen in air and combustion
Gas burning is relatively abundant, nitrogen oxides NOxGeneration is relatively low, and electric control valve is closed, and flue gas is not rebooted and enters combustion chamber.
A kind of gas heater with smoke circulating system that the present embodiment is provided 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, and 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 backflow is controlled by electric control valve when smoke backflow is guided
Amount, this electric control valve judges the size situation of whole machine burning load by strong drum DC fan rotating speed, except that can open and close,
Also aperture can be adjusted, mixed gas is burnt more abundant.When burning under high loads, electric control valve is opened and reaches maximum and opens
Degree；When burning load reduction, 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 does not reboot smoke backflow, and this kind of control form more effectively suppresses the generation of nitrogen oxides.
Above specific embodiment has been described in detail to essence of the invention, but can not be come to of the invention with this
Protection domain is limited.It should be evident that under the enlightenment of essence of the invention, the art those of ordinary skill can also enter
The many improvement of row and modification, such as set the condensing heat-exchange chamber being connected with combustion chamber, and the secondary heat exchanger is arranged on condensation and changes
In hot chamber etc..It should be noted that these are improved and modification all falls within claims of the invention.
Claims (4)
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 is 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 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 bulging DC fan is connected to combustion chamber
Bottom, the flue gas guiding port of the flue gas recirculation passage is arranged on the side of secondary heat exchanger, and the flue gas of flue gas recirculation passage goes out
Mouth is connected 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 mounted in combustion chamber top and successively from top to bottom.
4. gas heater according to claim 1, it is characterised in that the master controller turns according to strong drum DC fan
The aperture of the change electric control valve of different sizes of speed, strong drum DC fan rotating speed is bigger, and the aperture of electric control valve is bigger, strong drum
When DC fan rotating speed reaches maximum, the aperture of electric control valve also reaches maximum, when strong drum DC fan rotating speed reaches minimum, electricity
Air control valve is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710137748.XA CN106871445A (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 |
|---|---|---|---|
| CN201710137748.XA CN106871445A (en) | 2017-03-09 | 2017-03-09 | A kind of gas heater with smoke circulating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106871445A true CN106871445A (en) | 2017-06-20 |
Family
ID=59170130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710137748.XA Pending CN106871445A (en) | 2017-03-09 | 2017-03-09 | A kind of gas heater with smoke circulating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106871445A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120837A (en) * | 2017-05-06 | 2017-09-01 | 广东万家乐燃气具有限公司 | A kind of high effective flue gas circulatory system and its gas heater |
| CN110579022A (en) * | 2018-06-07 | 2019-12-17 | 芜湖美的厨卫电器制造有限公司 | gas water heater and anti-backfire control method thereof |
| CN110822705A (en) * | 2018-08-13 | 2020-02-21 | 芜湖美的厨卫电器制造有限公司 | Combustion heat exchange device, gas wall-mounted furnace and gas water heater |
| CN112682787A (en) * | 2019-10-17 | 2021-04-20 | 芜湖美的厨卫电器制造有限公司 | Combustion heat exchange assembly and gas water heater |
| CN114111047A (en) * | 2021-11-30 | 2022-03-01 | 何礼 | Gas wall-mounted furnace and combustion treatment method thereof |
| CN114608203A (en) * | 2022-03-31 | 2022-06-10 | 广东万和新电气股份有限公司 | Exhaust gas recirculation control method of water heater, water heater and storage medium |
Citations (5)
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| CN1177083A (en) * | 1996-09-14 | 1998-03-25 | 陈存祥 | Method for removing fume from boiler and fume-less boiler made by using same |
| CN201014751Y (en) * | 2007-01-19 | 2008-01-30 | 广东万家乐燃气具有限公司 | Wastewater afterheat recovering gas water heater |
| KR20090000360A (en) * | 2007-06-28 | 2009-01-07 | 전창준 | Heat blast apparatus by automatic combustion |
| CN106152479A (en) * | 2016-08-26 | 2016-11-23 | 芜湖美的厨卫电器制造有限公司 | Gas heater |
| CN206637834U (en) * | 2017-03-09 | 2017-11-14 | 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 CN201710137748.XA patent/CN106871445A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1177083A (en) * | 1996-09-14 | 1998-03-25 | 陈存祥 | Method for removing fume from boiler and fume-less boiler made by using same |
| CN201014751Y (en) * | 2007-01-19 | 2008-01-30 | 广东万家乐燃气具有限公司 | Wastewater afterheat recovering gas water heater |
| KR20090000360A (en) * | 2007-06-28 | 2009-01-07 | 전창준 | Heat blast apparatus by automatic combustion |
| CN106152479A (en) * | 2016-08-26 | 2016-11-23 | 芜湖美的厨卫电器制造有限公司 | Gas heater |
| CN206637834U (en) * | 2017-03-09 | 2017-11-14 | 广东万家乐燃气具有限公司 | A kind of gas heater with smoke circulating system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120837A (en) * | 2017-05-06 | 2017-09-01 | 广东万家乐燃气具有限公司 | A kind of high effective flue gas circulatory system and its gas heater |
| CN110579022A (en) * | 2018-06-07 | 2019-12-17 | 芜湖美的厨卫电器制造有限公司 | gas water heater and anti-backfire control method thereof |
| CN110822705A (en) * | 2018-08-13 | 2020-02-21 | 芜湖美的厨卫电器制造有限公司 | Combustion heat exchange device, gas wall-mounted furnace and gas water heater |
| CN110822705B (en) * | 2018-08-13 | 2021-08-20 | 芜湖美的厨卫电器制造有限公司 | Combustion heat exchange device, gas wall-mounted furnace and gas water heater |
| CN112682787A (en) * | 2019-10-17 | 2021-04-20 | 芜湖美的厨卫电器制造有限公司 | Combustion heat exchange assembly and gas water heater |
| CN112682787B (en) * | 2019-10-17 | 2022-10-04 | 芜湖美的厨卫电器制造有限公司 | Combustion heat exchange assembly and gas water heater |
| CN114111047A (en) * | 2021-11-30 | 2022-03-01 | 何礼 | Gas wall-mounted furnace and combustion treatment method thereof |
| CN114111047B (en) * | 2021-11-30 | 2023-08-22 | 陕西水墨江山能源科技有限公司 | Gas wall-mounted furnace and combustion treatment method thereof |
| CN114608203A (en) * | 2022-03-31 | 2022-06-10 | 广东万和新电气股份有限公司 | Exhaust gas recirculation control method of water heater, water heater and storage medium |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |
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| RJ01 | Rejection of invention patent application after publication |