CN107120837A - A kind of high effective flue gas circulatory system and its gas heater - Google Patents
A kind of high effective flue gas circulatory system and its gas heater Download PDFInfo
- Publication number
- CN107120837A CN107120837A CN201710314570.1A CN201710314570A CN107120837A CN 107120837 A CN107120837 A CN 107120837A CN 201710314570 A CN201710314570 A CN 201710314570A CN 107120837 A CN107120837 A CN 107120837A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- gas
- combustion chamber
- electric
- air inlet
- 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
- F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
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- 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
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- 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
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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 invention discloses a kind of high effective flue gas circulatory system, including the circulation air inlet pipeline between master controller, connection heat exchanger flue gas and combustion chamber, it is characterized in that, the circulation air inlet pipeline is the secondary heat exchanger for being connected to gas heater, be provided with electric-controlled valve on circulation air inlet pipeline, master controller with electric-controlled valve is automatically controlled couples.The invention also discloses a kind of gas heater with the high effective flue gas circulatory system.The present invention can reduce chamber temperature, prevent gas explosion, safe and reliable, can efficiently suppress the generation of nitrogen oxides, both improve hot water efficiency, also reduce the discharge of nitrogen oxides.
Description
Technical field
The present invention relates to combustion thermal technical field, led more particularly, to the smoke circulating system such as gas heater technology
Domain.
Background technology
Existing condensed type combustion gas water heater carries out secondary heat exchange to cold water using high-temperature flue gas, directly leads to after high-temperature flue gas heat exchange
Cross condensing heat exchanger exhaust opening to be discharged into air, the main pernicious gas in flue gas is NOx, pollutes air.
Also have what is utilized using circulation of tail gas, such as patent name is tail gas recycling utilization device for gas water heater
(CN201020134062.9), openly (announce) number is CN201662234U, the applying date to be：2010.03.15, openly (announce)
Day is 2010.12.01 patent of invention, and it is related to a kind of tail gas recycling utilization device for gas water heater, belongs to gas heater
Technical field, it includes combustion chamber, and the exhaust outlet of the combustion chamber is provided with offgas duct, and the offgas duct other end is passed through the combustion chamber
Second-time burning is carried out, the combustion chamber is additionally provided with secondary tail gas outlet, and tail gas access combustion chamber is carried out second-time burning by the present invention,
The content of carbon monoxide in tail gas, nitric oxide and unburned fuel gas is effectively reduced, the generation of poisoning is prevented,
But due to its access on the one hand flue-gas temperature it is too low, on the other hand its addition be uncontrollable, thus can influence combustibility,
Optimal effect can not be reached.
The content of the invention
Can be to carrying out secondary utilize to high-temperature flue gas the purpose of the present invention is to solve the shortcomings of the prior art providing one kind
The high effective flue gas circulatory system.
Another object of the present invention is to provide a kind of gas heater using the above-mentioned high effective flue gas circulatory system, make it
As real energy-saving and emission-reducing product.
In order to reach object above, patent of the present invention is adopted the following technical scheme that：
A kind of circulation between high effective flue gas circulatory system, including master controller, connection heat exchanger flue gas and combustion chamber is entered
Air pipe, it is characterised in that the circulation air inlet pipeline is the secondary heat exchanger for being connected to gas heater, circulates air inlet pipeline
On be provided with electric-controlled valve, master controller with electric-controlled valve is automatically controlled couples.
As a further illustration of the above scheme, the master controller is according to gas heater burning load situation, blower fan
Rotating speed and the oxygen concentration of combustion chamber control the opening and closing of electric-controlled valve；
The present invention a kind of gas heater with the high effective flue gas circulatory system, including first-class heat exchanger, secondary heat exchanger,
Strong drum DC fan, combustion chamber, master controller, strong drum DC fan are arranged in the air intake conduit of combustion chamber, its feature
It is, the circulation air inlet pipeline being provided between the flue gas of secondary heat exchanger and combustion chamber, is provided with circulation air inlet pipeline
Electric-controlled valve, master controller with electric-controlled valve is automatically controlled couples.
Further, the circulation air inlet pipeline is connected with air intake conduit.
A kind of high effective flue gas circulatory system that patent of the present invention is provided has the advantages that：
1st, prior art high temperature and high pressure flue gas is directly entered combustion chamber and is easily caused detonation, and after flue gas heat exchange cooling again by
Electric control valve guiding part of smoke enters combustion chamber, reduces chamber temperature, prevents gas explosion, safe and reliable.
2nd, the open and close of electric control valve are determined according to the height of complete machine thermic load, pass through detection blower fan rotating speed.Control
System enters the exhaust gas volumn of combustion chamber, can efficiently suppress the generation of nitrogen oxides.
3rd, this smoke circulating system has carried out secondary utilization to high-temperature flue gas, has both improved hot water efficiency, has also reduced nitrogen
The discharge of oxide.
Brief description of the drawings
Fig. 1 is operation principle structural representation of the invention.
Description of reference numerals：1st, secondary heat exchanger 2, first-class heat exchanger 3, combustion chamber 4, by force master controller 5, bulging direct current
Blower fan 6, electric control valve 7, circulation air inlet pipeline.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to patent of the present invention.
As shown in figure 1, the water heater of the present invention is main by first-class heat exchanger 2, secondary heat exchanger 1, electric control valve 6, strong drum
The parts such as DC fan 5, combustion chamber 3, master controller 4 composition exists, and strong drum DC fan 5 is arranged on the air inlet of combustion chamber 3
On pipeline, the circulation air inlet pipeline 7 being provided between the flue gas of secondary heat exchanger 1 and combustion chamber 3 is circulated and set on air inlet pipeline 7
Electric-controlled valve 6 is equipped with, the flue gas guiding port of circulation air inlet pipeline 7 is arranged on the right side of secondary heat exchanger 1, circulates air inlet pipeline 7
Communicated with air intake conduit, the opening and closing of the passage is controlled by electric control valve 6, master controller 4 is burnt according to gas heater
The oxygen concentration of load condition, rotation speed of fan and combustion chamber 3 controls the opening and closing of electric-controlled valve 6.
Operation principle:
Water heater working burns, and high-temperature flue gas first exchanges heat when reaching secondary heat exchanger 1 to the cold water in water pipe, hot water
Enter back into after first-class heat exchanger 2 is heated and flow out.When blower fan, which is in, to run at high speed, water heater, which is under high load capacity, to burn,
Air blast strengthens, and oxygen content concentration is higher, and being burnt in the case of oxygen-enriched easily produces nitrogen oxides, and now master controller 4 controls electricity
Air control valve 6 is opened, and leader flue gas enters in mixed airway, flue gas dilution mixed gas, reduces oxygen concentration, suppresses nitrogen oxygen
Compound NOx generation.When water heater burns at low load, rotation speed of fan reduction, the now oxygen in air and combustion gas combustion
Burn more abundant, nitrogen oxide NOx generation is relatively low, electric control valve is closed, flue gas do not rebooted and enters combustion chamber, master controller 4 with
Blower fan is electrically connected.
The inventive point of the present invention is to be provided as a kind of heat exchanger of new structure, and by electric-controlled type air valve having exchanged heat
The part of smoke of cooling brings the oxygen concentration in combustion chamber, reduction chamber temperature and dilute gas mixture into.
Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (5)
1. the circulation air inlet between a kind of high effective flue gas circulatory system, including master controller, connection heat exchanger flue gas and combustion chamber
On pipeline, it is characterised in that the circulation air inlet pipeline is the secondary heat exchanger for being connected to gas heater, circulation air inlet pipeline
Be provided with electric-controlled valve, master controller with electric-controlled valve is automatically controlled couples.
2. the high effective flue gas circulatory system according to claim 1, it is characterised in that the master controller is according to gas and hot water
Device burning load situation, rotation speed of fan and the oxygen concentration of combustion chamber control the opening and closing of electric-controlled valve；Transported at a high speed when blower fan is in
When turning, water heater, which is under high load capacity, to burn, and air blast enhancing, oxygen content concentration is higher, now main controller controls electric control valve
Open, leader flue gas enters in mixed airway, flue gas dilution mixed gas, reduces oxygen concentration, suppress nitrogen oxide NOx
Generation.When water heater burns at low load, rotation speed of fan reduction, now the oxygen and fuel gas buring in air relatively fill
Point, nitrogen oxide NOx generation is relatively low, and electric control valve is closed, and flue gas is not rebooted and enters combustion chamber.
3. a kind of gas heater with the high effective flue gas circulatory system, including first-class heat exchanger, secondary heat exchanger, strong drum direct current wind
Machine, combustion chamber, master controller, strong drum DC fan are arranged in the air intake conduit of combustion chamber, it is characterised in that at two grades
Electric-controlled valve is provided with the circulation air inlet pipeline being provided between the flue gas of heat exchanger and combustion chamber, circulation air inlet pipeline, it is main
Controller with electric-controlled valve is automatically controlled couples.
4. the gas heater of the high effective flue gas circulatory system according to claim 3, it is characterised in that the circulation air inlet pipe
Road is connected with air intake conduit.
5. the gas heater of the high effective flue gas circulatory system according to claim 3 or 4, it is characterised in that the main control
Device controls the opening and closing of electric-controlled valve according to gas heater burning load situation, rotation speed of fan and the oxygen concentration of combustion chamber；When
Blower fan is in when running at high speed, and water heater is in burning under high load capacity, and air blast enhancing, oxygen content concentration is higher, now main control
Device control electric control valve is opened, and leader flue gas enters in mixed airway, flue gas dilution mixed gas, reduces oxygen concentration,
Suppress the generation of nitrogen oxide NOx.When water heater burns at low load, rotation speed of fan is reduced, now the oxygen in air
More abundant with fuel gas buring, nitrogen oxide NOx generation is relatively low, and electric control valve is closed, and flue gas is not rebooted and enters combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710314570.1A CN107120837A (en) | 2017-05-06 | 2017-05-06 | A kind of high effective flue gas circulatory system and its gas heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710314570.1A CN107120837A (en) | 2017-05-06 | 2017-05-06 | A kind of high effective flue gas circulatory system and its gas heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107120837A true CN107120837A (en) | 2017-09-01 |
Family
ID=59727769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710314570.1A Pending CN107120837A (en) | 2017-05-06 | 2017-05-06 | A kind of high effective flue gas circulatory system and its gas heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107120837A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111023556A (en) * | 2019-11-20 | 2020-04-17 | 中山百得厨卫有限公司 | Gas water heater capable of realizing hot air circulation |
| CN111853784A (en) * | 2019-04-30 | 2020-10-30 | 芜湖美的厨卫电器制造有限公司 | Combustion assembly and wall-mounted furnace |
| WO2020221367A1 (en) * | 2019-04-30 | 2020-11-05 | 芜湖美的厨卫电器制造有限公司 | Burner and gas water heater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160146455A1 (en) * | 2014-11-21 | 2016-05-26 | Honeywell International Inc. | Fuel-air-flue gas burner |
| CN106152479A (en) * | 2016-08-26 | 2016-11-23 | 芜湖美的厨卫电器制造有限公司 | Gas heater |
| 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 |
| CN207035497U (en) * | 2017-05-06 | 2018-02-23 | 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 |
-
2017
- 2017-05-06 CN CN201710314570.1A patent/CN107120837A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160146455A1 (en) * | 2014-11-21 | 2016-05-26 | Honeywell International Inc. | Fuel-air-flue gas burner |
| CN106152479A (en) * | 2016-08-26 | 2016-11-23 | 芜湖美的厨卫电器制造有限公司 | Gas heater |
| 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 |
| CN207035497U (en) * | 2017-05-06 | 2018-02-23 | 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853784A (en) * | 2019-04-30 | 2020-10-30 | 芜湖美的厨卫电器制造有限公司 | Combustion assembly and wall-mounted furnace |
| WO2020221366A1 (en) * | 2019-04-30 | 2020-11-05 | 芜湖美的厨卫电器制造有限公司 | Combustion assembly and wall-mounted stove |
| WO2020221367A1 (en) * | 2019-04-30 | 2020-11-05 | 芜湖美的厨卫电器制造有限公司 | Burner and gas water heater |
| CN111023556A (en) * | 2019-11-20 | 2020-04-17 | 中山百得厨卫有限公司 | Gas water heater capable of realizing hot air circulation |
| CN111023556B (en) * | 2019-11-20 | 2023-09-26 | 中山百得厨卫有限公司 | Self-heated air circulation gas water heater |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170901 |
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| WD01 | Invention patent application deemed withdrawn after publication |