CN207035497U - 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
- CN207035497U CN207035497U CN201720501401.4U CN201720501401U CN207035497U CN 207035497 U CN207035497 U CN 207035497U CN 201720501401 U CN201720501401 U CN 201720501401U CN 207035497 U CN207035497 U CN 207035497U
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- CN
- China
- Prior art keywords
- flue gas
- gas
- combustion chamber
- electric
- air inlet
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- 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.)
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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]
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- Regulation And Control Of Combustion (AREA)
Abstract
The utility model 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 utility model can reduce chamber temperature, prevent gas explosion, securely and reliably, can efficiently suppress the generation of nitrogen oxides, both improve hot water efficiency, also reduce the discharge of nitrogen oxides.
Description
Technical field
Combustion thermal technical field is the utility model is related to, more particularly, to the smoke circulating system technology such as gas heater
Field.
Background technology
Existing condensed type combustion gas water heater carries out secondary heat exchange to cold water using high-temperature flue gas, directly logical 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, if patent name is tail gas recycling utilization device for gas water heater
(CN201020134062.9), openly (to announce) number be CN201662234U, the applying date is：2010.03.15, openly (announce)
Day is 2010.12.01 utility model patent, and it is related to a kind of tail gas recycling utilization device for gas water heater, belongs to combustion gas heat
Hydrophone 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
Burn room and carry out second-time burning, the combustion chamber is additionally provided with secondary tail gas outlet, and the utility model carries out tail gas access combustion chamber
Second-time burning, the content of carbon monoxide in tail gas, nitric oxide and unburned fuel gas is effectively reduced, prevent thing of being poisoned
The generation of part, but due to its access, on the one hand flue-gas temperature is too low, on the other hand its addition is uncontrollable, thus can influence
Combustibility, it is impossible to reach optimal effect.
Utility model content
The purpose of this utility model is to provide one kind in view of the shortcomings of the prior art can be secondary to being carried out to high-temperature flue gas
The high effective flue gas circulatory system utilized.
Another object of the present utility model is to provide a kind of gas heater using the above-mentioned high effective flue gas circulatory system,
Become real energy-saving and emission-reducing product.
In order to reach object above, the utility model patent adopts 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；
A kind of gas heater with the high effective flue gas circulatory system of the present utility model, including first-class heat exchanger, two level are changed
Hot device, DC fan, combustion chamber, master controller are roused by force, strong drum DC fan is arranged in the air intake conduit of combustion chamber, its
It is characterised by, the circulation air inlet pipeline being provided between the flue gas of secondary heat exchanger and combustion chamber, circulates and set on air inlet pipeline
Be equipped with 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 the utility model patent provides has the advantages that：
1st, prior art high temperature and high pressure flue gas, which is directly entered combustion chamber, easily causes 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, securely and reliably.
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 can efficiently suppress the generation of nitrogen oxides into the exhaust gas volumn of combustion chamber.
3rd, this smoke circulating system has carried out secondary use 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 present utility model.
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 the utility model patent.
As shown in figure 1, water heater of the present utility model mainly by first-class heat exchanger 2, secondary heat exchanger 1, electric control valve 6,
The part compositions such as strong drum DC fan 5, combustion chamber 3, master controller 4 exist, and strong drum DC fan 5 is arranged on the air of combustion chamber 3
On air inlet pipeline, the circulation air inlet pipeline 7 that is provided between the flue gas of secondary heat exchanger 1 and combustion chamber 3, air inlet pipeline 7 is circulated
On be provided with electric-controlled valve 6, 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 pipe
Road 7 is communicated with air intake conduit, and the opening and closing of the passage is controlled by electric control valve 6, and master controller 4 is fired according to gas heater
Load condition, rotation speed of fan and the oxygen concentration of combustion chamber 3 are burnt to control 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 mixed airway, in 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 reduces, now the oxygen in air and combustion gas combustion
Burn more abundant, nitrogen oxide NOx generation is relatively low, and electric control valve is closed, and does not reboot flue gas and enters combustion chamber, master controller 4 and
Blower fan electrically connects.
Inventive point of the present utility model is to be provided as a kind of heat exchanger of new structure, and by electric-controlled type air valve
The part of smoke of heat exchange cooling brings combustion chamber into, reduces the oxygen concentration in chamber temperature and dilute gas mixture.
Above-described is only preferred embodiment of the present utility model, it is noted that for the ordinary skill of this area
For personnel, on the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.
Claims (5)
- A kind of 1. circulation air inlet between high effective flue gas circulatory system, including master controller, connection heat exchanger flue gas and combustion chamber Pipeline, it is characterised in that the circulation air inlet pipeline is the secondary heat exchanger for being connected to gas heater, is circulated on 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 mixed airway, in flue gas dilution mixed gas, reduces oxygen concentration, suppression nitrogen oxide NOx Generation；When water heater burns at low load, rotation speed of fan reduces, and now the oxygen in air and fuel gas buring are more abundant, Nitrogen oxide NOx generation is relatively low, and electric control valve is closed, and is not rebooted flue gas and is entered 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 in two level The circulation air inlet pipeline being provided between the flue gas of heat exchanger and combustion chamber, circulate and be provided with electric-controlled valve on 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 Pipeline 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 master control Device processed 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, which is in, to run at high speed, water heater, which is under high load capacity, to burn, and air blast enhancing, oxygen content concentration is higher, now master control Device processed control electric control valve is opened, and leader flue gas enters mixed airway, in flue gas dilution mixed gas, drops oxygen concentration It is low, suppress the generation of nitrogen oxide NOx；When water heater burns at low load, rotation speed of fan reduces, now the oxygen in air Gas and fuel gas buring are more abundant, and nitrogen oxide NOx generation is relatively low, and electric control valve is closed, and is not rebooted flue gas and is entered combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720501401.4U CN207035497U (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 |
|---|---|---|---|
| CN201720501401.4U CN207035497U (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 |
|---|---|
| CN207035497U true CN207035497U (en) | 2018-02-23 |
Family
ID=61480023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720501401.4U Expired - Fee Related CN207035497U (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) | CN207035497U (en) |
Cited By (1)
| 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 |
-
2017
- 2017-05-06 CN CN201720501401.4U patent/CN207035497U/en not_active Expired - Fee Related
Cited By (1)
| 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 |
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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: 20180223 Termination date: 20200506 |