CN201032250Y - Blue flare subsection air feed gas water heater - Google Patents
Blue flare subsection air feed gas water heater Download PDFInfo
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- CN201032250Y CN201032250Y CNU2006200119242U CN200620011924U CN201032250Y CN 201032250 Y CN201032250 Y CN 201032250Y CN U2006200119242 U CNU2006200119242 U CN U2006200119242U CN 200620011924 U CN200620011924 U CN 200620011924U CN 201032250 Y CN201032250 Y CN 201032250Y
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Abstract
The utility model relates to a water heater, in particular to the gas water heater of blue flame and subsection type wind supply. The utility model comprises a water inlet valve, a water inlet flow sensor, a gas valve, a pulse igniter, a plurality of lines of fire-row burners, a heat exchanger and a fan. The utility model is characterized in that the water heater is provided with a-n distributors; the gas valve is connected with an n-1 distributors through n-1 electromagnetic valves; one of n distributors is directly connected with the gas valve; each line of distributors are provided with a plurality of gas nozzles; each gas nozzle corresponds to the ignition hole of a fire-row burner; the fan is an n-speed fan. The air inlet channel is divided into a plurality of sections to be controlled; a multi-shift shifting fan is adjusted to be corresponding to the small, medium and large fire of the burner; the excessive air coefficient alpha in burning process is constantly maintained between the scopes of 1.5; thus the burner can reach the best state; the content of CO in the flue gas is below 300PPm; the thermal efficiency is higher than 88 percent.
Description
Technical field
The utility model relates to a kind of gas heater, and particularly a kind of combustion gas can clean-burning blue burning flare gas water heater.
Background technology
Gas heater is the widely used a kind of water heater of current family, it has, and volume is little, firing rate is fast, and the advantage of instant-heating is along with the sternness of ecological deterioration and energy problem, energy-conservation and the environmental protection theme that becomes international also becomes the developing trend of combustion technology.For gas heater, improving combustion thermal efficiency, reducing toxic emission is a target of updating for a long time.
Existing closed gas heater structure mainly comprises as shown in Figure 1: parts such as water intaking valve 1, flow of inlet water inductor 2, gas valve 3, pulse igniter (not shown), blast tube 4, multiple row fire row burner 5, heat exchanger 6, blower fan 7 and exhaust fume collecting hood 8 constitute.The water of running water pipe enters heat exchanger 6 through water intaking valve 1, flow of inlet water inductor 2 water pipe carries out heat exchange with the high-temperature flue gas that burning produces; Combustion gas (natural gas, artificial coal gas, liquefied petroleum gas) enters injector that each row fire arrange burner 5 through blast tube by nozzle ejection by gas valve 3, spurt into the combustion gas of burner injector and draw the suction primary air, and mix the flammable premix gas of formation with primary air and discharge by the fire hole of burner, light through igniter, studies show that primary air ratio generally gets 0.5-0.7, the amount that is to say primary air is 5/10ths to 7/10ths of a combustion gas completing combustion required air quantity, this combustion process will produce a large amount of carbon monoxide, therefore need use blower fan 7 to combustor blast simultaneously, air upwards enters the combustion chamber by the strip crevice between each row fire row burner becomes the auxiliary air that carbon monoxide is burnt.
During the gas heater normal combustion, flame should be limpid, transparent, is tangible blueness, and CO content in smoke must be lower than the standard limit value, can not tempering, from flame; When using reference gas Huang Yan can not be arranged.Blue flame when burning, sufficient combustion, thoroughly, pernicious gas content is low in high, the flue gas of the thermal efficiency.The structure and the blue flame of several key components and parts such as gas valve, nozzle, burner, heat exchanger, Forced discharge fan have substantial connection, and flame is limpid, transparent when being the gas heater normal combustion, and flame is the assurance of tangible blueness.
Yet,, need water heater that the hot water of different temperatures can be provided, and the hot water temperature is constant under the condition of different water consumptions for the user of water heater.The size of the solution of the existing gas heater inflow control combustion gas that to be the computer buttress sensed according to design temperature and flow of inlet water inductor reaches the control water temperature.Yet the change of combustion gas size will make the ratio of primary air ratio and auxiliary air change, and very difficult assurance is in the blue flare state of best combustion.
Summary of the invention
Technical problem to be solved in the utility model is, at the above-mentioned deficiency of prior art, and provides a kind of different water temperatures that can provide, and under the condition of different water consumptions the constant blue flare subsection air feed gas water heater of water temperature.
The technical scheme that realizes blue flare subsection air feed gas water heater of the present utility model is as follows:
A kind of blue flare subsection air feed gas water heater, comprise: water intaking valve, flow of inlet water inductor, gas valve, pulse igniter, multiple row fire row burner, heat exchanger and blower fan, wherein: be provided with a n distributor, described gas valve connects described n-1 distributor by n-1 magnetic valve, in the n distributor a road directly connects described gas valve, every distributor is provided with a plurality of gas nozzles, and each gas nozzle is over against the perforation of a fire row burner; Described blower fan is a n speed blower fan.
A kind of blue flare subsection air feed gas water heater, comprise: water intaking valve, flow of inlet water inductor, gas valve, pulse igniter, multiple row fire row burner, heat exchanger and blower fan, wherein: 3 distributors that are provided with one or two passage, described gas valve connects two passages of described 3 distributors by 2 magnetic valves, in 3 distributors a road are provided with 4 gas nozzles, another road in 3 distributors is provided with 7 gas nozzles, and each gas nozzle is over against the perforation of a fire row burner; Described blower fan is 3 fast blower fans.
A kind of blue flare subsection air feed gas water heater, comprise: water intaking valve, flow of inlet water inductor, gas valve, pulse igniter, multiple row fire row burner, heat exchanger and blower fan, wherein: be provided with one 3 passages, 7 distributors, described gas valve connects 3 passages of described 7 distributors respectively by 3 magnetic valves, in 3 distributors a road are provided with 4 gas nozzles, another road in 3 distributors is provided with 6 gas nozzles, another road again in 3 distributors is provided with 8 gas nozzles, and each gas nozzle is over against the perforation of a fire row burner; Described blower fan is 7 fast blower fans.
Except that above-mentioned essential features, in specific implementation process, also can replenish following technology contents:
Described blue flare subsection air feed gas water heater, wherein, described gas valve is the voltage stabilizing gas valve.
Described blue flare subsection air feed gas water heater, wherein, described gas valve is that the running parameter of voltage stabilizing gas valve is: when upstream pressure changed, the variation of downstream pressure was not more than 0.05 times specified back and presses and add 15Pa.
Described blue flare subsection air feed gas water heater, wherein, the angle of throat α of described nozzle is between 15 °～30 °.
Described blue flare subsection air feed gas water heater, wherein, the angle of throat α of described nozzle is 25 ° ± 5 °.
Described blue flare subsection air feed gas water heater, wherein, described multiple row fire row burner is to have a plurality of parallel arranged fire row burners to constitute, each fire row burner is flat box-like, its top is provided with row's fire hole, bottom, one side is provided with perforation, and described perforation is communicated with described top row's fire hole by the drainage tube of a ㄥ shape.
Described blue flare subsection air feed gas water heater, wherein, described combustor inlet primary air ratio is between 0.65～0.7.
Described blue flare subsection air feed gas water heater, wherein, the fire hole of burner is square fire hole, its length and width are of a size of (3～6) mm * (0.4～0.6) mm.
Described blue flare subsection air feed gas water heater, wherein, the knuckle radius R of the drainage tube corner of the ㄥ shape of burner is between 13～17mm, preferable is between 15～16mm; The angle of revolution of the drainage tube of ㄥ shape is 18～23 °.
Described blue flare subsection air feed gas water heater, wherein, the least significant end of the fin of heat exchanger is 100mm～200mm to the distance of burner combustion mouth, that preferable is 140mm～170mm, the thickness of fin is 0.2mm～0.4mm, material selects for use oxygen-free copper, soldering on heat-exchange tube, and the distance between fin and fin is 2mm～4.5mm.
Advantage of the present utility model is:
The utility model is divided into multistage control with inlet channel, in conjunction with little fire, moderate heat, the big fire of corresponding burner respectively of many grades of speed-changing draught fans, and .., the excess air coefficient α when making burning maintains in 1.5 scopes all the time, and burner is burnt with the state of the best all the time.
By innovative design to segmented distributor, nozzle, burner, heat exchanger, Forced discharge fan and the gas valve of gas heater, the air capacity that combustion gas air inflow and blower fan are blasted reaches optimal proportion, make fuel gas buring fully, thoroughly, combustion flame is tangible blueness, exhaust simultaneously is smooth and easy, harmful substance in the flue gas within the limits prescribed, heat exchange is abundant, thermal efficiency height.
By experimental test, water heater of the present utility model, combustion flame is limpid, transparent, be tangible blueness, and the content of CO is below 300PPm, below the 600PPm (forced-ventilated machine) of GB regulation in the flue gas; Heat exchange simultaneously is abundant, and the thermal efficiency is higher than 88%, is higher than 80% standard of GB regulation, exceeds 2%～5% than similar type, is blue flame burning truly.
For architectural feature of the present utility model and effect thereof are had further understanding, enumerate specific embodiment now and be described with reference to the accompanying drawings as follows.
Description of drawings
Fig. 1 is the structural representation of existing closed strong-ventilating gas water heater.
Fig. 2 is the structural representation of the utility model segmentation air feed gas heater.
Fig. 3 is the structural representation of the combustion gas pressure maintaining valve of the utility model gas heater.
Fig. 4 a is the concrete structure figure of a kind of embodiment (three section two channel distributor) of the distributor of the utility model gas heater.
Fig. 4 b is the schematic diagram of a kind of embodiment (three section two channel distributor) of the distributor of the utility model gas heater.
Fig. 4 c is the schematic diagram of the another kind of embodiment (seven sections triple channel distributors) of the distributor of the utility model gas heater.
Fig. 4 d is the schematic diagram of another embodiment (n section n channel distributor) of the distributor of the utility model gas heater.
Fig. 5 is the sectional view of Fig. 4 a distributor.
Fig. 6 is the cutaway view of nozzle, shows the angle of angle of throat.
Fig. 7 is the cutaway view of the utility model burner.
Fig. 8 is the vertical view of the utility model burner.
Fig. 9 is a kind of enforcement illustration of the how fast blower fan of the utility model.
The specific embodiment
The utility model is that the size that overcomes the inflow control combustion gas that existing gas heater sensed according to design temperature and flow of inlet water inductor reaches the control water temperature, exist the ratio of primary air ratio and auxiliary air to change, and can not guarantee to be in the blue flare of best combustion, and a kind of gas heater of segmentation air feed burning is proposed.The air capacity that combustion gas air inflow and blower fan are blasted reaches optimal proportion, make fuel gas buring fully, thoroughly, combustion flame is tangible blueness, exhaust simultaneously is smooth and easy, the harmful substance in the flue gas within the limits prescribed, heat exchange is abundant, thermal efficiency height.
Embodiment one
Its structure of blue flare subsection air feed gas water heater provided by the utility model as shown in Figure 2, it mainly comprises: water intaking valve 1, flow of inlet water inductor 2, gas valve 3, pulse igniter, multiple row fire row burner 5, heat exchanger 6 and blower fan, be with the difference of existing gas heater: the blast tube position at existing gas heater is provided with one 3 distributors 9, described gas valve connects described 3 distributors 9 by 2 magnetic valves, described 3 distributors are made up of 2 road blast tubes, 2 road blast tubes in 3 distributors 9 connect described gas valve by magnetic valve respectively, each road of distributor is provided with a plurality of gas nozzles 91 (as Fig. 4 a, Fig. 4 b, shown in Figure 5), each gas nozzle 91 is over against the perforation 51 (referring to Fig. 7) of a fire row burner 5; Arbitrary solenoid valve conduction constitutes corresponding one section or two sections burner ventilation burnings, and 2 equal conductings of magnetic valve then constitute complete section (or claiming the 3rd section) ventilation burning; Described blower fan is 3 fast blower fans 10.
Be the concrete structure of 3 distributors shown in Fig. 4 a, Fig. 5 is its sectional view, and Fig. 4 b is a schematic diagram.Described 3 distributors 9 are the flat case of a sealing, lower side is provided with 2 air admission holes 92, two air admission holes connect gas valve 3 by gas electromagnetic valve respectively, upper side is provided with a plurality of outgassing nozzles 91, one dividing plate 93 is separated into two blast tubes 94,95 with box body, and each blast tube has an air admission hole 92 and portion nozzle 91, in the diagram specific embodiment, blast tube 94 has 4 nozzles 91, and blast tube 95 has 7 nozzles 91.When blast tube 94 ventilations, 5 burnings of 4 row fire row burners are then arranged, be referred to as one section burning; When blast tube 95 ventilations, 5 burnings of 7 row fire row burners are then arranged, be referred to as two sections burnings; When if blast tube 94,95 is all ventilated, 5 burnings of then whole 11 row fire row burners are referred to as three sections burnings.Since the amount difference of three sections required auxiliary airs of burning, so the used blower fan of the utility model is three fast blower fans, and described three fast blower fans are to set three kinds of different rotating speeds according to three sections required auxiliary air amounts of burning.Excess air coefficient when making burning maintains in 1.5 scopes all the time, and burner is burnt with the state of the best all the time.
In the present embodiment, described gas valve is the voltage stabilizing gas valve, plays stable gaseous-pressure.
During the gas heater normal combustion, when optimal values, burn fullest, thoroughly of excess air coefficient, the thermal efficiency is the highest, and therefore, the ratio of air capacity and gas quantity remains unchanged substantially during best combustion.And air capacity is made up of primary air and auxiliary air two parts, under the situation that the composition parts of water heater are fixed, the primary air soakage depends on the gas flow rate of nozzle exit, auxiliary air is determined by rotation speed of fan, under the situation that the blower fan capacity remains unchanged substantially, require gas quantity also must remain unchanged.But because the supply gas pressure of combustion gas often is subjected to the influence of extraneous factor and often changes; therefore; the water heater of no pressure maintaining valve is the variation because of air pressure through regular meeting; air demand changes; excess air coefficient changes when making burning; therefore make burning insufficient, produce Huang Yanhuo during burning from the flame phenomenon, pernicious gas content obviously increases in the flue gas.For addressing this problem, the used gas valve of the utility model is the combustion gas pressure maintaining valve, its structure as shown in Figure 3, be on valve body 31, to be provided with valve pocket with air admission hole 32 and venthole 33, be provided with a valve plug 34 in venthole 33, valve plug 34 connects a flexible membrane 36 by a connecting rod 35, is provided with the spring 37 of adjustable pressure in the outside of flexible epithelium, can regulate the gaseous-pressure of discharging pressure maintaining valve by the pressure of adjusting nut 38 regulating springs 37, and it is stable to keep-up pressure.Its course of work is: under the constant condition of gaseous-pressure, epithelium remains in certain position under the acting in conjunction of gaseous-pressure and spring pressure, the open gap that keep a certain size between valve plug and the gas outlet this moment.If supply gas pressure reduces, spring pressure is greater than supply gas pressure, and epithelium moves up, and then under the spring pressure effect, the gap between valve plug and the gas outlet is strengthened, and output pressure improves; Otherwise if supply gas pressure improves, the gap between valve plug and the gas outlet reduces, and output pressure reduces; Therefore can keep the combustion gas output pressure stable, play pressure stabilization function.When upstream pressure changed, the variation of downstream pressure should be not more than 0.05 times specified back and press and add 15Pa.
Fig. 6 illustrates, the used nozzle arrangements of the utility model, and the design of gas nozzle has directly determined the air consumption of burner, thereby has determined the thermic load of burner, and the angle of nozzle passage has determined the energy loss of gas flow and the variation of the preceding pressure of nozzle.Test shows, the angle of throat α of nozzle in the time of 15 °～30 °, the discharge coefficient maximum of nozzle, when promptly gas-flow is crossed nozzle, resistance minimum, energy loss minimum.The used nozzle convergence angle α of the utility model has guaranteed that at 25 ° ± 5 ° gas flow is lost in the minimum scope.But because the difficulty of processing, existing nozzle convergence angle α has increased the nozzle energy loss about 60 °.
Fig. 7 Fig. 8 is the structure chart of the row fire row burner in the used multiple row fire of the utility model blue flare subsection air feed gas water heater row burner, and multiple row fire row burner is made of a plurality of parallel arranged fire row burners, each fire row burner is flat box-like, its top is provided with row's fire hole 51, bottom, one side is provided with perforation 52, and described perforation is communicated with described top row's fire hole 51 by the drainage tube 53 of ㄥ shape.
Described combustor inlet primary air ratio is between 0.65～0.7.
The fire hole of burner is square fire hole, and its length and width are of a size of (3～6) mm * (0.4～0.6) mm, are preferably 4.5mm * 0.52mm.
The knuckle radius R of the drainage tube corner of the ㄥ shape of burner is between 13～17mm, and preferable is between 15～16mm; The angle of revolution of the drainage tube of ㄥ shape is 18～23 °.
Heat exchanger carries out exchange heat, requires exchange heat thoroughly, rapidly, require simultaneously the heat exchanger smoke evacuation smooth and easy, do not stop up, do not produce the yellow flame of contact, carbon distribution not.The least significant end of the fin of the used heat exchanger of the utility model is 100mm～200mm to the distance of burner combustion mouth, that preferable is 140mm～170mm, the thickness of fin is 0.2mm～0.4mm, material selects for use oxygen-free copper, soldering on heat-exchange tube, and the distance between fin and fin is 2mm～4.5mm.Blue flare subsection air feed gas water heater of the present utility model, fin thickness are thin more, and heat exchanger effectiveness is high more, and the thermal efficiency is reduced, the therefore best fin of selecting 0.3mm for use.Oxygen-free copper fin heat exchange simultaneously is good, and the soldering corrosion resistance is strong.The used heat exchanger of the utility model had both guaranteed the efficient of heat exchange, had guaranteed that again flue gas is unobstructed, and was not blocked.
By test of many times checking, not tempering of burner of the present utility model, from flame, Huang Yan, CO content in smoke below 300PPm, combustion flame is limpid, transparent, is tangible blue flame burning.
On gas heater, the correct air feed of organizing is in order to satisfy combustion gas completing combustion in the combustion chamber with the least possible air quantity, to make the imperfect combustion product C O volume fraction in the flue gas drop to very low level.Test shows, air feed is crossed conference and caused flame from flame on forced-ventilated water heater, and CO content in smoke obviously rises, and the thermal efficiency descends.
The blower fan of forced-ventilated gas water heater is single speed in the market, and wind speed is non-adjustable.When the air inflow of combustion gas increased or reduces, because wind speed is constant, so excess air coefficient changes, CO content in smoke raise, and it is insufficient to burn, and the thermal efficiency descends.
Embodiment two
Be the another kind of embodiment of the utility model blue flare subsection air feed gas water heater, present embodiment and embodiment one are basic identical, comprise equally: water intaking valve 1, flow of inlet water inductor 2, gas valve 3, pulse igniter, multiple row fire row burner 5, heat exchanger 6 and blower fan 7, its difference is the distributor difference: the used distributor of present embodiment is 3 passages, 7 distributors, its structure is shown in Fig. 4 c, described gas valve connects 3 passages of described 7 distributors respectively by 3 magnetic valves, in 3 distributors a road are provided with 4 gas nozzles, another road in 3 distributors is provided with 6 gas nozzles, another road again in 3 distributors is provided with 8 gas nozzles, and each gas nozzle is over against the perforation of a fire row burner; Described blower fan is 7 fast blower fans.
The quantity of the fire row burner of described 7 distributor correspondences is as follows:
4 gas nozzles of one section first via solenoid valve conduction, 4 row fire row burner combustion;
6 gas nozzles of two section second way solenoid valve conducting, 6 row fire row burner combustion;
8 gas nozzles of three sections Third Road solenoid valve conductions, 8 row fire row burner combustion;
10 gas nozzles of four sections first and second way solenoid valve conductings, 10 row fire row burner combustion;
12 gas nozzles of five section first and third way solenoid valve conducting, 12 row fire row burner combustion;
14 gas nozzles of six sections second and third way solenoid valve conductings, 14 row fire row burner combustion;
18 gas nozzles of seven sections first, second and third way solenoid valve conductings, 18 row fire row burner combustion.
Compare with embodiment one, present embodiment has more segmentation, and the quantity of the fire row burner between each section differs less, can obtain the hot water of more different temperatures.
Embodiment three
Present embodiment and embodiment one, two is basic identical, comprise equally: water intaking valve 1, flow of inlet water inductor 2, gas valve 3, pulse igniter, multiple row fire row burner 5, heat exchanger 6 and blower fan 7, its difference is the distributor difference: the used distributor of present embodiment is a n passage n distributor, its structure is shown in Fig. 4 d, described gas valve connects n-1 passage of described n distributor respectively by n-1 magnetic valve, in the n distributor a road directly connects described gas valve, every distributor is provided with a plurality of gas nozzles, and each gas nozzle is over against the perforation of a fire row burner; Described blower fan is a n speed blower fan.
Present embodiment is more general, and the hot water of more different temperatures can be provided.
Claims (10)
1. blue flare subsection air feed gas water heater, comprise: water intaking valve, flow of inlet water inductor, gas valve, pulse igniter, multiple row fire row burner, heat exchanger and blower fan, it is characterized in that: be provided with a n distributor, described gas valve connects described n-1 distributor by n-1 magnetic valve, in the n distributor a road directly connects described gas valve, every distributor is provided with a plurality of gas nozzles, and each gas nozzle is over against the perforation of a fire row burner; Described blower fan is a n speed blower fan.
2. blue flare subsection air feed gas water heater, comprise: water intaking valve, flow of inlet water inductor, gas valve, pulse igniter, multiple row fire row burner, heat exchanger and blower fan, it is characterized in that: 3 distributors that are provided with one or two passage, described gas valve connects two passages of described 3 distributors by 2 magnetic valves, in 3 distributors a road are provided with 4 gas nozzles, another road in 3 distributors is provided with 7 gas nozzles, and each gas nozzle is over against the perforation of a fire row burner; Described blower fan is 3 fast blower fans.
3. blue flare subsection air feed gas water heater, comprise: water intaking valve, the flow of inlet water inductor, gas valve, pulse igniter, multiple row fire row burner, heat exchanger and blower fan, it is characterized in that: be provided with one 3 passages, 7 distributors, described gas valve connects 3 passages of described 7 distributors respectively by 3 magnetic valves, in 3 distributors a road are provided with 4 gas nozzles, another road in 3 distributors is provided with 6 gas nozzles, another road again in 3 distributors is provided with 8 gas nozzles, and each gas nozzle is over against the perforation of a fire row burner; Described blower fan is 7 fast blower fans.
4. according to claim 1 or 2 or 3 described blue flare subsection air feed gas water heaters, it is characterized in that described gas valve is the voltage stabilizing gas valve.
5. according to claim 1 or 2 or 3 described blue flare subsection air feed gas water heaters, it is characterized in that the angle of throat α of described nozzle is between 15 °～30 °.
6. according to claim 1 or 2 or 3 described blue flare subsection air feed gas water heaters, it is characterized in that, described multiple row fire row burner is to have a plurality of parallel arranged fire row burners to constitute, each fire row burner is flat box-like, its top is provided with row's fire hole, bottom, one side is provided with perforation, and described perforation is communicated with described top row's fire hole by the drainage tube of a ㄥ shape.
7. according to claim 1 or 2 or 3 described blue flare subsection air feed gas water heaters, it is characterized in that described combustor inlet primary air ratio is between 0.65～0.7.
8. according to claim 1 or 2 or 3 described blue flare subsection air feed gas water heaters, it is characterized in that the fire hole of burner is square fire hole, its length and width are of a size of (3～6) mm * (0.4～0.6) mm.
9. according to claim 1 or 2 or 3 described blue flare subsection air feed gas water heaters, it is characterized in that the knuckle radius R of the drainage tube corner of burner is between 13～17mm, preferable is between 15～16mm; The angle of revolution of drainage tube is 18～23 °.
10. according to claim 1 or 2 or 3 described blue flare subsection air feed gas water heaters, it is characterized in that, the least significant end of the fin of heat exchanger is 100mm～200mm to the distance of burner combustion mouth, the thickness of fin is 0.2mm～0.4mm, material selects for use oxygen-free copper, soldering on heat-exchange tube, and the distance between fin and fin is 2mm～4.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200119242U CN201032250Y (en) | 2006-12-09 | 2006-12-09 | Blue flare subsection air feed gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200119242U CN201032250Y (en) | 2006-12-09 | 2006-12-09 | Blue flare subsection air feed gas water heater |
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| CN201032250Y true CN201032250Y (en) | 2008-03-05 |
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| CNU2006200119242U Expired - Lifetime CN201032250Y (en) | 2006-12-09 | 2006-12-09 | Blue flare subsection air feed gas water heater |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173821B (en) * | 2006-10-30 | 2010-05-26 | 海尔集团公司 | Blue flare subsection air feed gas water heater |
| CN103148591A (en) * | 2013-03-28 | 2013-06-12 | 天津福天石油装备有限公司 | Combustion chamber for main heating water tank |
| CN106949619A (en) * | 2017-03-24 | 2017-07-14 | 广东万家乐燃气具有限公司 | The gas heater of wake air during a kind of adjustable combustion |
| CN107313984A (en) * | 2017-06-30 | 2017-11-03 | 广东万家乐燃气具有限公司 | Gas heater and guiding device |
| CN107525277A (en) * | 2017-08-25 | 2017-12-29 | 万家乐热能科技有限公司 | A kind of low nitrogen wall-hung condensing gas furnace and its application process |
-
2006
- 2006-12-09 CN CNU2006200119242U patent/CN201032250Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101173821B (en) * | 2006-10-30 | 2010-05-26 | 海尔集团公司 | Blue flare subsection air feed gas water heater |
| CN103148591A (en) * | 2013-03-28 | 2013-06-12 | 天津福天石油装备有限公司 | Combustion chamber for main heating water tank |
| CN106949619A (en) * | 2017-03-24 | 2017-07-14 | 广东万家乐燃气具有限公司 | The gas heater of wake air during a kind of adjustable combustion |
| CN107313984A (en) * | 2017-06-30 | 2017-11-03 | 广东万家乐燃气具有限公司 | Gas heater and guiding device |
| CN107525277A (en) * | 2017-08-25 | 2017-12-29 | 万家乐热能科技有限公司 | A kind of low nitrogen wall-hung condensing gas furnace and its application process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080305 Effective date of abandoning: 20061209 |