CN103994581A - Fully-premixed combustion water heater with gas inlet device - Google Patents
Fully-premixed combustion water heater with gas inlet device Download PDFInfo
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- CN103994581A CN103994581A CN201410180547.4A CN201410180547A CN103994581A CN 103994581 A CN103994581 A CN 103994581A CN 201410180547 A CN201410180547 A CN 201410180547A CN 103994581 A CN103994581 A CN 103994581A
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Abstract
A fully-premixed combustion water heater with a gas inlet device comprises a combustor assembly, a fuel gas valve, a fan and a controller. The fuel gas valve and the fan are electrically connected with the controller, and the fully-premixed combustion water heater is mainly characterized in that the gas inlet device is arranged in an air inlet of the fan, a gas circuit of the fuel gas valve, a gas circuit of the gas inlet device, a gas circuit of the fan and a gas circuit of the combustor assembly are communicated, at least one air inlet is formed in the gas inlet device, an electric control valve is arranged on the at least one air inlet, the electric control valve is electrically connected with the controller, and the controller adjusts the air inlet quantity of the air inlet by controlling the electric control valve. The fully-premixed combustion water heater is suitable for a gas water heater or a fuel gas heating water heater, the load adjusting ratio of the fully-premixed combustion water heater can be increased, and the adjusting flexibility and use comfort of the water heater can be improved.
Description
Technical field
The invention belongs to gas heater or gas-heating water heater field, relate to particularly a kind of full premix combustion water heater with inlet duct.
Background technology
The defects such as the existing gas heater overwhelming majority is all the mode that adopts atmospheric burning type, and it is many that it has excess air, and the thermal efficiency is low; Excess air is little because having for the conventional full premix combustion of gas-heating water heater, CO and NOx content is low, thermal efficiency advantages of higher is widely used, and gas heater also starts to adopt the combustion system of full premix.Because being is referred from gas-heating water heater, there is the not high defect of load regulation rate in gas heater.
Particularly, the gas heater of full premix combustion enters burner and burns after combustion gas mixes with air, because not taking sectional combustion, therefore its gas mixture ratio example is stable, load regulation rate depends on blower fan and gas valve adjustable range, and also because being subject to technical limitations, the minimum speed of blower fan can not be too low, therefore load regulation rate is generally 4:1, this is enough for gas-heating water heater; But the improper direct shower for gas heater.For example: 8 liters/min of general water outlet of water heater amounts, summer, cold water temperature was 30 ℃, and shower water temperature is comparatively comfortable at 38 ℃, according to Load Regulation 4:1,10 liters of water heaters just meet the demands, if 16 liters of water outlet of water heater temperature reach 43 ℃, can feel to scald very much and are difficult to use.For overcoming the not high defect of full premix combustion water heater load regulation rate, spy develops having the full premix combustion water heater of inlet duct.
Summary of the invention
Technical problem to be solved by this invention is that a kind of full premix combustion water heater with inlet duct will be provided, and it can increase full premix combustion water heater Load Regulation ratio, improves the flexibility of water heater adjusting and the comfortableness of use.
The technical scheme that the present invention solves its technical problem employing is: a kind of full premix combustion water heater with inlet duct, comprise burner assembly, gas valve, blower fan, controller, gas valve, blower fan is electrically connected to described controller, the air inlet of blower fan is provided with inlet duct, gas valve, inlet duct, blower fan, burner assembly gas circuit communicates, on described inlet duct, also offer at least one air inlet, at least one air inlet place is provided with electrically-controlled valve, electrically-controlled valve is electrically connected to controller, controller regulates the air inflow of air inlet by controlling electrically-controlled valve.
According to an example of the present invention, described inlet duct is a hollow box or a hollow tube.
According to an example of the present invention, described inlet duct is comprised of lid and cover plate, is provided with spiral-shaped plenum duct in lid, and plenum duct arises from air inlet, terminates in the connector that is communicated with blower fan on cover plate.Utilize detouring of air-flow, to eliminate the noise of uttering long and high-pitched sounds of air-flow in combustion process, and be beneficial to air and mix with the even of combustion gas.
According to an example of the present invention, between described blower fan and inlet duct, be also provided with blender.Further to strengthen air, mix with the even of combustion gas, improve the thermal efficiency.
According to an example of the present invention, described air inlet comprises the first air inlet and the second air inlet.
According to an example of the present invention, the sectional area of the first air inlet is greater than the sectional area of the second air inlet, and electrically-controlled valve is arranged on the first air inlet place.To improve better load regulation rate.
According to an example of the present invention, described electrically-controlled valve is control valve or switch valve.
According to an example of the present invention, described air inlet arranges 1, and the electrically-controlled valve that this air inlet place is provided with is control valve.
According to an example of the present invention, described gas valve is electric-controlled gas proportioning valve.
According to an example of the present invention, described gas valve is gas control gas ratio valve, between gas control gas ratio valve and inlet duct, is provided with wireway, and wireway one end is communicated with gas control gas ratio valve, and the other end is near air inlet setting, and connection inlet duct.Can be by wireway the feedback to gas control gas ratio valve, regulate the gas pushing quantity of gas control gas ratio valve.
The present invention compares produced beneficial effect with background technology: because the present invention arranges inlet duct between gas valve and blower fan, and on described inlet duct, also offer at least one air inlet, at least one air inlet place is provided with electrically-controlled valve, electrically-controlled valve is electrically connected to controller, and controller regulates the air inflow of air inlet by controlling electrically-controlled valve.Therefore the present invention, by controlling air inlet amount, increases full premix combustion water heater Load Regulation ratio, improves the flexibility of water heater adjusting and the comfortableness of use.
Accompanying drawing explanation:
Fig. 1 is structural representation of the present invention, and wherein dotted portion represents electrical connection;
Fig. 2 is the side-looking structural representation of burner assembly 01 in Fig. 1, blower fan 03, inlet duct 05;
Fig. 3 is the blast three-dimensional structure diagram of inlet duct 05 in Fig. 1 or Fig. 2;
Fig. 4 is the other direction three-dimensional structure diagram of lid 51 in inlet duct 05 in Fig. 3;
Fig. 5 is the structural representation of another embodiment of the present invention;
Fig. 6 is the control graph of a relation of 04 pair of gas valve 02 of middle controller of the present invention, blower fan 03, electrically-controlled valve 06.
The specific embodiment: describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, wherein in each figure, identical label represents identical part.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the present invention, and be not understood to limitation of the present invention.
Embodiment mono-: as shown in Figure 1 and Figure 2, the full premix combustion water heater with inlet duct in the present embodiment, comprises burner assembly 01, gas valve 02, blower fan 03, controller 04, inlet duct 05, electrically-controlled valve 06, blender 08.
Gas valve 02, blower fan 03, electrically-controlled valve 06 are electrically connected to described controller 04, and described inlet duct 05 is arranged on the air inlet of blower fan 03, and gas valve 02, inlet duct 05, blender 08, blower fan 03, burner assembly 01 gas circuit communicate.Described gas valve 02 is electric-controlled gas proportioning valve.
On inlet duct 05, also offer at least one air inlet 54, and at least one air inlet 54 place is provided with electrically-controlled valve 06.In the present embodiment, on inlet duct 05, offer 2 air inlets 54, i.e. the first air inlet 541 and the second air inlet 542, and the sectional area of the first air inlet 541 is greater than the sectional area of the second air inlet 542, that is to say that the air inflow of the first air inlet in 541 unit interval is greater than the air inflow of the second air inlet in 542 unit interval, so can improve load regulation rate better.Described electrically-controlled valve 06 is arranged on the first air inlet 541 places, and wherein electrically-controlled valve 06 is control valve or switch valve.
As shown in Figure 3, Figure 4, inlet duct 05 is a hollow box or a hollow tube, it in the present embodiment, is a hollow box, and described hollow box is comprised of lid 51 and cover plate 52, in lid 51, be provided with spiral-shaped plenum duct 53, in other words, air-flow at lid 51 around flowing, air-flow in lid 51 around flowing a circle or more than a circle, when plenum duct 53 is provided with two circles when above, air-flow around flowing, can be one-way flow or two-way flow.Guiding air ring streams kinetic energy effectively to be eliminated and in combustion process, produces the air-flow noise of uttering long and high-pitched sounds, and air around flowing, contribute to air to mix with the even of combustion gas.In the present embodiment for detouring the unidirectional plenum duct 53 of a circle, in figure, dotted portion represents air-flow direction, plenum duct 53 arises from air inlet 54, terminate in the connector 55 that is communicated with blower fan 03 on cover plate 52, air inlet 54 is the first air inlet 541 and second air inlet 542 of contiguous setting mutually.
As shown in Figure 6, controller 04 is by controlling gas valve 02 to control gas inlet amount, rotating speed by controlling blower fan 03 controlling air flow amount, by controlling electrically-controlled valve 06 to control air inlet amount.
During work, controller 04 is controlled gas valve 02, blower fan 03, electrically-controlled valve 06 work, and gas valve 02 is sent combustion gas into inlet duct 05, and blower fan 03 starts, and user is according to controlling electrically-controlled valve 06 to control air inlet amount.Under the effect of blower fan 03, air is inhaled into inlet duct 05 from the first air inlet 541 and the second air inlet 542, and the spiral-shaped plenum duct 53 of flowing through, so can effectively eliminate the noise of uttering long and high-pitched sounds of Air Flow, and be beneficial to air and mix with the even of combustion gas.Air and combustion gas enter blender 08, blower fan 03 after mixing inlet duct 05 is interior, finally send into burner assembly 01 and take fire.
In the present embodiment, what need to further lay down a definition is, when controller 04 control electrically-controlled valve 06 is opened the first air inlet 541, the first air inlet 541 and the second air inlet 542 enter air simultaneously, when the rotating speed of blower fan 03 reaches maximum, be maximum heating load, take 30kW as example, now thermic load is 30kW, when the rotating speed of blower fan 03 reaches minimum, thermic load is 7.5kW, and load regulation rate is that 30kW:7.5kW is 4:1; While now closing the first air inlet 541 by controller 04 control electrically-controlled valve 06, control gas valve 02 simultaneously and adjust suitable throughput assurance full premix combustion, during the minimum speed of blower fan 03, thermic load becomes 5kW, during the maximum (top) speed of blower fan 03, thermic load becomes 20kW, load regulation rate is also that 20kW:5kW is 4:1, but total load regulation rate is 30kW:5kW becomes 6:1, so increase full premix combustion water heater Load Regulation ratio, thereby improved the comfortableness that water heater is used.
Embodiment bis-, as shown in Figure 5, the present embodiment and above-described embodiment difference are: in the present embodiment, gas valve 02 is gas control gas ratio valve, between gas control gas ratio valve and inlet duct 05, be provided with wireway 07, wireway 07 one end is communicated with gas control gas ratio valve, the other end arranges near air inlet 54, and is communicated with inlet duct 05.
In the present embodiment, when controller 04 control electrically-controlled valve 06 is opened the first air inlet 541, the first air inlet 541 and the second air inlet 542 enter air simultaneously, by the feedback of 07 pair of gas control gas ratio valve of wireway, when the rotating speed of blower fan 03 reaches maximum, be maximum heating load, take 30kW as example, now thermic load is 30kW, when the rotating speed of blower fan 03 reaches minimum, thermic load is 7.5kW, and load regulation rate is that 30kW:7.5kW is 4:1; Now by controller 04, control the passage that electrically-controlled valve 06 is closed the first air inlet 541, simultaneously by the feedback of 07 pair of gas control gas ratio valve of wireway, during the minimum speed of blower fan 03, thermic load becomes 5kW, during the maximum (top) speed of blower fan 03, thermic load becomes 20kW, load regulation rate is also that 20kW:5kW is 4:1, but total load regulation rate is 30kW:5kW becomes 6:1, so increased full premix combustion water heater Load Regulation ratio, thereby improved the comfortableness that water heater is used.
Above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, modification, replacement and modification.Described various variations, modification, replacement and modification are all in protection scope of the present invention.
Claims (10)
1. a full premix combustion water heater with inlet duct, comprise burner assembly (01), gas valve (02), blower fan (03), controller (04), gas valve (02), blower fan (03) is electrically connected to described controller (04), it is characterized in that: the air inlet of blower fan (03) is provided with inlet duct (05), gas valve (02), inlet duct (05), blower fan (03), burner assembly (01) gas circuit communicates, on described inlet duct (05), also offer at least one air inlet (54), at least one air inlet (54) locates to be provided with electrically-controlled valve (06), electrically-controlled valve (06) is electrically connected to controller (04), controller (04) regulates the air inflow of air inlet (54) by controlling electrically-controlled valve (06).
2. the full premix combustion water heater with inlet duct according to claim 1, is characterized in that described inlet duct (05) is a hollow box or a hollow tube.
3. the full premix combustion water heater with inlet duct according to claim 2, it is characterized in that described inlet duct (05) is comprised of lid (51) and cover plate (52), in lid (51), be provided with spiral-shaped plenum duct (53), plenum duct (53) arises from air inlet (54), terminates in the upper connector (55) that is communicated with blower fan (03) of cover plate (52).
4. the full premix combustion water heater with inlet duct according to claim 3, is characterized in that being also provided with blender (08) between described blower fan (03) and inlet duct (05).
5. according to the full premix combustion water heater with inlet duct described in any one in claim 1 ~ 4, it is characterized in that described air inlet (54) comprises the first air inlet (541) and the second air inlet (542).
6. the full premix combustion water heater with inlet duct according to claim 5, it is characterized in that the sectional area of the first air inlet (541) is greater than the sectional area of the second air inlet (542), electrically-controlled valve (06) is arranged on the first air inlet (541) and locates.
7. the full premix combustion water heater with inlet duct according to claim 6, is characterized in that described electrically-controlled valve (06) is for control valve or switch valve.
8. according to the full premix combustion water heater with inlet duct described in any one in claim 1 ~ 4, it is characterized in that described air inlet (54) arranges 1, and the electrically-controlled valve (06) that this air inlet (54) is located to be provided with is control valve.
9. according to the full premix combustion water heater with inlet duct described in any one in claim 1 ~ 4, it is characterized in that described gas valve (02) is electric-controlled gas proportioning valve.
10. according to the full premix combustion water heater with inlet duct described in any one in claim 1 ~ 4, it is characterized in that described gas valve (02) is gas control gas ratio valve, between gas control gas ratio valve and inlet duct (05), be provided with wireway (07), wireway (07) one end is communicated with gas control gas ratio valve, the other end arranges near air inlet (54), and is communicated with inlet duct (05).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410180547.4A CN103994581B (en) | 2014-05-04 | 2014-05-04 | Fully-premixed combustion water heater with gas inlet device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410180547.4A CN103994581B (en) | 2014-05-04 | 2014-05-04 | Fully-premixed combustion water heater with gas inlet device |
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| CN103994581A true CN103994581A (en) | 2014-08-20 |
| CN103994581B CN103994581B (en) | 2017-01-18 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105571131A (en) * | 2014-10-13 | 2016-05-11 | 银川艾尼工业科技开发有限公司 | Condensation-type gas heating hot water boiler electronically controlling gas mixture ratio |
| CN103994581B (en) * | 2014-05-04 | 2017-01-18 | 广东万和新电气股份有限公司 | Fully-premixed combustion water heater with gas inlet device |
| CN109682071A (en) * | 2019-01-23 | 2019-04-26 | 浙江双菱戴纳斯帝电气有限公司 | Condensing captation and wall-hung boiler with condensing captation |
| CN109838808A (en) * | 2019-03-26 | 2019-06-04 | 广东万和新电气股份有限公司 | Heat load adjusting device and fully pre-mixing gas combustion water heater |
| CN110594855A (en) * | 2019-07-16 | 2019-12-20 | 华帝股份有限公司 | Control method of gas heating stove with variable bathing heat load and gas heating stove |
| CN111947296A (en) * | 2020-07-21 | 2020-11-17 | 华帝股份有限公司 | Fully-premixed gas water heater and control method |
| CN112128985A (en) * | 2019-06-25 | 2020-12-25 | 芜湖美的厨卫电器制造有限公司 | Gas water heater's gas adjusting device and gas water heater that has it |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994581B (en) * | 2014-05-04 | 2017-01-18 | 广东万和新电气股份有限公司 | Fully-premixed combustion water heater with gas inlet device |
| CN105571131A (en) * | 2014-10-13 | 2016-05-11 | 银川艾尼工业科技开发有限公司 | Condensation-type gas heating hot water boiler electronically controlling gas mixture ratio |
| CN109682071A (en) * | 2019-01-23 | 2019-04-26 | 浙江双菱戴纳斯帝电气有限公司 | Condensing captation and wall-hung boiler with condensing captation |
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| CN109838808B (en) * | 2019-03-26 | 2024-06-11 | 广东万和新电气股份有限公司 | Heat load adjusting device and full-premix gas water heater |
| CN112128985A (en) * | 2019-06-25 | 2020-12-25 | 芜湖美的厨卫电器制造有限公司 | Gas water heater's gas adjusting device and gas water heater that has it |
| CN110594855A (en) * | 2019-07-16 | 2019-12-20 | 华帝股份有限公司 | Control method of gas heating stove with variable bathing heat load and gas heating stove |
| CN110594855B (en) * | 2019-07-16 | 2021-07-16 | 华帝股份有限公司 | Control method of gas heating stove with variable bathing heat load and gas heating stove |
| CN111947296A (en) * | 2020-07-21 | 2020-11-17 | 华帝股份有限公司 | Fully-premixed gas water heater and control method |
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| CN103994581B (en) | 2017-01-18 |
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