CN201339977Y - Household gas oven with function of flue gas recirculation - Google Patents
Household gas oven with function of flue gas recirculation Download PDFInfo
- Publication number
- CN201339977Y CN201339977Y CNU2008202043092U CN200820204309U CN201339977Y CN 201339977 Y CN201339977 Y CN 201339977Y CN U2008202043092 U CNU2008202043092 U CN U2008202043092U CN 200820204309 U CN200820204309 U CN 200820204309U CN 201339977 Y CN201339977 Y CN 201339977Y
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- CN
- China
- Prior art keywords
- combustion chamber
- gas
- combustion
- flue
- flue gas
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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
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Abstract
The utility model discloses a household gas oven with a function of flue gas recirculation, a gas jet is connected with a burner by an ejector; the burner is arranged in a combustion chamber formed by oven walls; a discharge flue and a secondary air duct are arranged on the opposite end of the ejector in the combustion chamber; the combustion chamber is also provided with a steering angle which forms a re-circulation flue with the oven wall on the opposite end of the ejector; the re-circulation flue is communicated with the discharge flue on the upper end of the combustion chamber, and is communicated with the secondary air duct and a mixing duct on the lower end thereof. The utility model utilizes the density difference of the flue gas after combustion to realize the self circulation of the flue gas in the oven, reduces the incomplete combustion heat loss of fuel gas in the combustion chamber and the physical heat loss of flue gas emission, has simple system and little heat loss, can reduce the emission of NOx by high temperature and low oxygen combustion, and achieves the effect of efficient combustion of the fuel gas with low pollution.
Description
Technical field
The utility model relates to gas furnace, particularly a kind of home-use gas furnace with flue gas recirculation.
Background technology
Our home-use air suspended type stove and accessory that mostly is greatly at present, partly-premixed combustion system is adopted in its burning, and the part air can only be finished its basic burning, and it can not make the fuel after-flame, needs replenishing of auxiliary air, forms diffusion combustion and just can reach completing combustion.This partly-premixed air burning mode is entered in the burner cavity by gaseous-pressure nature injection air by injector, the flame temperature of fuel gas buring has only about 700 ℃-800 ℃, and this air hybrid mode and burned flame temperature make the air suspended type stove and accessory have certain incomplete combustion loss.
The air suspended type kitchen range heat the pot on the stove and accessory by the mode of gas radiation and Convective Heating, and this heat transfer type can make the air suspended type kitchen range because of fume high-temperature open discharge and the bigger physics heat loss of not enough generation of the time of staying.
Above reason makes the thermal efficiency of air suspended type kitchen range only be a bit larger tham 50% (national standard).
The utility model content
The purpose of this utility model is to overcome the shortcoming of prior art, provide a kind of simple in structure, heat loss is little, and can reduce the discharging of NOx by high-temperature and low-oxygen combustion, reaches the home-use gas furnace of fuel gas high efficiency combustion with reduced pollutants effect.
The utility model is achieved through the following technical solutions:
A kind of home-use gas furnace with flue gas recirculation, gas nozzle is connected with burner by injector; It is characterized in that burner is positioned at the combustion chamber that is made of furnace wall; The injector opposite end is provided with smokejack and secondary air duct in the combustion chamber, in the combustion chamber, also be provided with steering angle, form recirculating gas duct between the furnace wall behind steering angle and the gas furnace, recirculating gas duct is communicated with smokejack in the upper end, combustion chamber, is communicated with secondary air duct and mixing air channel in the lower end.
The box-structure that is made of furnace wall is preferably adopted in described combustion chamber.
The furnace wall of inboard, described combustion chamber preferably adopts the high temperature ceramic material by white to build up.
With respect to prior art, the utility model has following advantage and effect mutually:
(1) chamber structure of relative closure is adopted in the utility model combustion chamber, and help reducing heat and scatter and disappear, and the high temperature ceramic material of the adularescent combustion chamber in, can reduce heat radiation by reflecting heat, keep higher furnace temperature, the reduction incomplete combustion loss.
(2) the utility model is by being provided with steering angle in the combustion chamber, form recirculating gas duct with the back furnace wall, and the combustion chamber is provided with smokejack and the secondary air duct that is in communication with the outside, realize the recycle burning mode, this mode is the heavy position pressure reduction that utilizes the flue gas temperature difference to form, and realizes the self-loopa of partial fume, has utilized the part of waste heat of smoke evacuation, reduce the physics heat loss, improve the thermal efficiency.
(3) the utility model also reduces oxygen concentration in the combustion chamber by recycle burning, realizes reducing the generation of NOx in the combustion process, reduces environmental pollution.
Description of drawings
Fig. 1 is the structural representation with home-use gas furnace of flue gas recirculation.
Shown in the figure: furnace wall 11-secondary air duct 12-mixing air channel behind the 6-kitchen sink 7-steering angle 8-smokejack 9-recirculating gas duct 10-of 1-gas nozzle 2-injector 3-burner 4-furnace wall 5-combustion chamber
The specific embodiment
The utility model is further described below in conjunction with accompanying drawing.
As shown in Figure 1, the home-use gas furnace that the utlity model has flue gas recirculation is a kind of box-structure, comprises gas nozzle 1, injector 2, burner 3, furnace wall 4, combustion chamber 5, the kitchen sink 6, steering angle 7, smokejack 8, recirculating gas duct 9, back furnace wall 10, secondary air duct 11 and mixes air channel 12.Gas nozzle 1 is connected with burner 3 by injector 2, and burner 3 is positioned at the box-structure combustion chamber 5 that is made of furnace wall 4.Combustion chamber 5 is positioned at injector 2 opposite ends and is provided with smokejack 8 and secondary air duct 11, in combustion chamber 5, also be provided with steering angle 7, steering angle 7 is connected with the furnace wall 4 of both sides, front and back, and form recirculating gas duct 9 between the furnace wall 4 of injector 2 opposite ends, 5 upper ends are communicated with smokejack 8 recirculating gas duct 9 in the combustion chamber, are communicated with secondary air duct 11 and mixing air channel 12 in the lower end.Secondary air duct 11 connects and mixes air channel 12, mixes the burner 3 that air channel 12 connects in the combustion chamber, realizes the outer side contacts of secondary wind and burner.
Home-use gas furnace with flue gas recirculation forms combustion gas premix combustion systems, flue gas discharge and recirculating system and secondary wind and diffusion combustion system.The combustion gas of the gas nozzle 1 of combustion gas premix combustion systems enters injector 2, and injector 2 links to each other with burner 3, and is placed in the combustion chamber 5, and burning back flue gas is to pot heat release on the kitchen sink 6.Flue gas is discharged and recirculating system, and high-temperature flue gas part through steering angle 7 after is introduced smokejack 8 and discharged, and the recirculating gas duct 9 of another part between steering angle 7 and back furnace wall 10 sent back in the combustion chamber 5 with mixing air channel 11.Secondary wind is connected with secondary air duct 11 in the diffusion combustion system and mixes air channel 12, mix air channel 12 and connect combustion chamber 5, the secondary wind and the burner 3 outer side contacts that form because secondary wind at this moment is the high-temperature low-oxygen air, can realize the high-efficiency low-pollution diffusion combustion of combustion gas.
The furnace wall 4 of 5 inboards, combustion chamber is white high temperature ceramic material, and tool reflect heat function can reduce heat radiation by reflecting heat, keeps higher furnace temperature, can place the cooking pot above the kitchen sink 6.
The combustion chamber 5 that the utility model furnace wall 4 constitutes also can be designed to other shape of other relative closure easy to use except that adopting above-mentioned box-structure.
During use, the combustion gas of band pressure is in gas nozzle 1 ejection at a high speed, injector effect 2 times, suck primary air, make combustion gas form premixed combustion at burner 3, burner 3 is placed in the combustion chamber 5, insulation of wall in the combustion chamber 5 and reflect heat structure make can improving efficiency of combustion and reducing radiation loss of flue gas, most of heats by radiation and heat convection mode pass on the kitchen sink 6 cooking with the pot, high-temperature flue gas after the heat release is divided into two-way through steering angle 7, one route smokejack 8 is discharged, another part through mixing with the fresh air of secondary air duct 11 at cycle flue 9 after after mixing flue 12 as the auxiliary air of burner 3 burning, this auxiliary air has the temperature height, the characteristics that the oxygen amount is low make the diffusion combustion of burner 3 peripheries reach the effect of high-efficiency low-pollution.
Claims (3)
1. home-use gas furnace with flue gas recirculation, gas nozzle is connected with burner by injector; It is characterized in that burner is positioned at the combustion chamber that is made of furnace wall; The injector opposite end is provided with smokejack and secondary air duct in the combustion chamber, in the combustion chamber, also be provided with steering angle, form recirculating gas duct between the furnace wall behind steering angle and the gas furnace, recirculating gas duct is communicated with smokejack in the upper end, combustion chamber, is communicated with secondary air duct and mixing air channel in the lower end.
2. the home-use gas furnace with flue gas recirculation according to claim 1 is characterized in that: the box-structure of described combustion chamber for being made of furnace wall.
3. the home-use gas furnace with flue gas recirculation according to claim 1 and 2 is characterized in that: the furnace wall of inboard, described combustion chamber serve as reasons white high temperature ceramic material build up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202043092U CN201339977Y (en) | 2008-12-01 | 2008-12-01 | Household gas oven with function of flue gas recirculation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202043092U CN201339977Y (en) | 2008-12-01 | 2008-12-01 | Household gas oven with function of flue gas recirculation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201339977Y true CN201339977Y (en) | 2009-11-04 |
Family
ID=41235524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202043092U Expired - Fee Related CN201339977Y (en) | 2008-12-01 | 2008-12-01 | Household gas oven with function of flue gas recirculation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201339977Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485897A (en) * | 2016-01-29 | 2016-04-13 | 青岛全能节能环保锅炉有限公司 | Water-tube boiler achieving internal circulation of flue gas and low-nitrogen combustion control method |
| 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 |
-
2008
- 2008-12-01 CN CNU2008202043092U patent/CN201339977Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485897A (en) * | 2016-01-29 | 2016-04-13 | 青岛全能节能环保锅炉有限公司 | Water-tube boiler achieving internal circulation of flue gas and low-nitrogen combustion control method |
| CN105485897B (en) * | 2016-01-29 | 2018-08-28 | 青岛全能节能环保锅炉有限公司 | Circulating water pipe boiler and low nitrogen burning control method in flue gas |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20101201 |