CN102444987A - Dual-air-source gas hot water supply device - Google Patents
Dual-air-source gas hot water supply device Download PDFInfo
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- CN102444987A CN102444987A CN201010507013XA CN201010507013A CN102444987A CN 102444987 A CN102444987 A CN 102444987A CN 201010507013X A CN201010507013X A CN 201010507013XA CN 201010507013 A CN201010507013 A CN 201010507013A CN 102444987 A CN102444987 A CN 102444987A
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Abstract
The invention discloses a dual-air-source gas hot water supply device which comprises a nozzle, a combustor, an electric control fuel control valve, a fan, a main controller and a program chip, wherein the nozzle is communicated with the electric control gas control valve, and the main controller is electrically connected with the fan, the electric control gas control valve and the program chip. The dual-air-source gas hot water supply device is mainly technically characterized by also comprising a switch, more than two control programs corresponding to air sources are stored in the program chip, the switch selects to call a corresponding program in the program chip, the switch, the program chip and the main controller are electrically connected, and the electric control fuel control valve is an electric fuel proportional valve. The dual-air-source gas hot water supply device has the characteristics of capability of using the two air sources, no need of reconstruction of a fuel water heater during replacing of gas variety, convenience for use, and the like.
Description
Technical field: the present invention relates to a kind of gas heating water device of dual gas supply, it is adapted to combustion gas tools such as gas heater, gas-heating water heater.
Background technology: existing gas heating water device; Can only use single gas kind like gas heater; Along with implementing in full of several large projects such as transfering natural gas from the west to the east, gas east, river are sent, the East Sea construction of natural gas fields; Just great changes will take place for the source of the gas structure of National urban combustion gas, and natural gas just progressively replaces artificial coal gas, liquefied petroleum gas or emptyly mixes gas and become the leading source of the gas in city.Natural gas and artificial coal gas, liquefied petroleum gas or empty conversion work of mixing gas are launched just throughout the country in succession simultaneously, and corresponding is that gas heating water devices such as numerous artificial coal gas in all parts of the country, liquefied petroleum gas must face the difficult problem of stopping the supple of gas or steam and transforming.Existing burner is transformed, made it to become the natural gas burner, even drop into great amount of manpower and material resources, also difficult so huge burner transformation task of accomplishing in the short period of time, for example the gas replacement work in Beijing, Shanghai has all surpassed 15 years.Cause the gas kind that exists gas heating water device to use single, more the ventilation kind need be transformed gas heating water device, and then defective such as is inconvenient to use.For overcoming these defectives, the gas heating water device of dual gas supply is developed.
Summary of the invention: technical problem to be solved by this invention is the gas heating water device that a kind of dual gas supply will be provided, and it can use two kinds of sources of the gas, and more ventilation is planted and need do not transformed gas heating water device, and then convenient the use.
The technical scheme that the present invention solves its technical problem employing is: it comprises nozzle, burner, electric-controlled gas control valve, blower fan, master controller, program chip; Nozzle is communicated with the electric-controlled gas control valve; Described master controller and blower fan, electric-controlled gas control valve, program chip electrically connect; It also comprises switch, and described program chip stores more than two and the corresponding control program of source of the gas, and described switch is selected corresponding program in the caller chip; Described switch, program chip and master controller electrically connect, and described electric-controlled gas control valve is the electric-controlled gas proportioning valve.
Described switch is a slide switch.
Described switch is a toggle switch.
Described electric-controlled gas control valve is the electric-controlled gas proportioning valve.
The described cross-section area of nozzle is set by two kinds of low sources of the gas of source of the gas Wobbe index.
Described switch is an above switch element.
The present invention compares the beneficial effect that is produced with background technology: because the present invention adopts switch, program chip stores more than two and the corresponding control program of source of the gas, and switch is selected corresponding program in the caller chip; The structure that switch, program chip and master controller electrically connect does not need any transformation during the conversion source of the gas, only needs console switch; Just can realize the source of the gas conversion; So it can use two kinds of sources of the gas, more ventilation is planted and need do not transformed gas heating water device, and then convenient the use.
The structural representation that the air outlet 11 of blower fan 4 was communicated with the air inlet 12 of burner 2 when description of drawings: Fig. 1 was the electric-controlled gas proportioning valve for electric-controlled gas control valve 3 among the present invention.
Fig. 2 is the structural representation of master controller 5.
The structural representation that the air inlet 10 of blower fan 4 was communicated with the outlet flue 13 of exhaust fume collecting hood 7 when Fig. 3 was the electric-controlled gas proportioning valve for electric-controlled gas control valve 3 among the present invention.
Fig. 4 is the structural representation of gas-heating water heater for the present invention.
The specific embodiment:
Embodiment one: shown in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3; Present embodiment comprises nozzle 1, burner 2, electric-controlled gas control valve 3, blower fan 4, master controller 5, exhaust fume collecting hood 7, heat exchanger 8, stores the program chip 9 of controlling heat production outlet capacity program, the switch 6 of selecting corresponding program in the caller chip 9; Described switch 6, program chip 9 are arranged on the master controller 5, and program chip 9 can be PIC16F73, PIC16F74, ATmega8L or ATmega16L or the like.Electric-controlled gas control valve 3 one ends with advance Gas Pipe and be communicated with, the other end of electric-controlled gas control valve 3 is communicated with nozzle 1, master controller 5 electrically connects with blower fan 4, electric-controlled gas control valve 3, program chip 9, switch 6.
Double-source gas water heater with liquefied petroleum gas/natural gas is an example, and liquefied petroleum gas is the 20Y liquefied petroleum gas, standard component 75% propane and 25% butane; Natural gas is the 12T natural gas, standard component 100% methane.
Gas heater is example with 20kW, presses following equation and each source of the gas calorific value calculation:
CH
4+2O
2＝CO
2+2H
2O；C
3H
8+5O
2＝3CO
2+4H
2O；C
4H
10+6.5O
2＝4CO
2+5H
2O。
CH
4Low heat value 34.016MJ/m
3, C
3H
8Low heat value 87.9951MJ/m
3, C
4H
10Low heat value 116.4767MJ/m
3
The gas heater of 20kW needs 12T natural gas 2.1167m
3, the required oxygen 4.2334m of theoretically complete combustion
3The gas heater of 20kW needs 20Y liquefied petroleum gas 0.757m
3, the required oxygen 4.0688m of theoretically complete combustion
3, both only differ in 4% by required oxygen.For this reason, the fan performance of this double-source gas water heater can directly general two kinds of sources of the gas, but thermal efficiency basically identical.Because the burner of this double-source gas water heater is to adopt the multifuel burner (multifuel burner is meant the burner that can be applicable to the two or more sources of the gas that calorific value and combustion characteristics differ greatly respectively) that is applicable to two or more sources of the gas; The thermic load that realizes two kinds of sources of the gas is basic identical, can guarantee the stable and good of combustion conditions.
The calculation of Heat Load of gas heater is: Q=Hi*Lg=0.0035*Hi*u*d
2* (H/S)
1/2,
Q in the formula---round nozzle thermic load (kW),
Hi---combustion gas low heat value (MJ/m
3),
Lg---round nozzle throughput (m
3/ h),
U---nozzle orifice coeficient,
D---round nozzle diameter (mm),
Gaseous-pressure (Pa) before H---the nozzle,
S---combustion gas relative density,
According to following formula, make the thermic load of two kinds of sources of the gas identical, i.e. Q
(20Y)=Q
(12T),
0.0035*Hi then
(20Y)* u
(20Y)* d
(20Y) 2* (H
(20Y)/ S
(20Y))
1/2=0.0035*Hi
(12T)* u
(12T)* d
(12T) 2* (H
(12T)/ S
(12T))
1/2
The cross-section area of nozzle of double-source gas water heater can be set according to the source of the gas that heat stress index is lower in two kinds of sources of the gas, promptly presses the 12T natural gas and sets, and nozzle diameter is identical, and following formula is reduced to:
Hi
(20Y)*(H
(20Y)/S
(20Y))
1/2＝Hi
(12T)*(H
(12T)/S
(12T))
1/2。
Be W
(20Y)* (H
(20Y))
1/2=W
(12T)* (H
(12T))
1/2
W in the formula
(20Y)---20Y liquefied petroleum gas low heat loads index (73.3417MJ/m
3).
W
(12T)---12T natural gas low heat loads index (45.8616MJ/m3).
According to following formula, the thermic load of double-source gas water heater is directly proportional with the sqrt of the preceding gaseous-pressure of low heat loads exponential sum nozzle of each source of the gas.Setting pressure according to the 12T natural gas is that 250Pa～1250Pa can know that the setting pressure of 20Y liquefied petroleum gas is 98Pa～489Pa, thereby the thermic load that can realize two kinds of sources of the gas is basic identical.
Above parameter is stored in the program chip 9, through the adjustment switch 6 different conditions come in the caller chip 9 with the corresponding control program of source of the gas, just can realize the conversion of two kinds of sources of the gas.
As shown in Figure 1, the air outlet 11 of blower fan 4 is communicated with the air inlet 12 of burner 2, and this moment, blower fan 4 was necessary for the blower fan of ability speed governing, and blower fan 4 is generally 220V, 36V or 24V; Burner 2 can be half harmonica-type burner, T type burner or all-premixing burner, and switch 6 can be slide switch or toggle switch etc.
As shown in Figure 3, the air inlet 10 of blower fan 4 is communicated with the outlet flue 13 of heat exchanger 8, this moment blower fan 4 can be can speed governing blower fan or blower fan that can not speed governing, blower fan 4 is generally 220V, burner 2 can be half harmonica-type burner.
Electric-controlled gas control valve 3 is the electric-controlled gas proportioning valve in the present embodiment, and the air inlet 10 of blower fan 4 is communicated with the outlet flue 13 of exhaust fume collecting hood 7, and blower fan 4 is the 24V blower fan of ability speed governing, and burner 2 is half harmonica-type burner, and switch 6 is a toggle switch.
Nozzle 1 sectional area is to set by the lower source of the gas of heat stress index in two kinds of sources of the gas in the present embodiment: like two kinds of 20Y liquefied petroleum gas and 12T natural gases, the diameter that then sets by the 12T natural gas is the nozzle 1 of 1.35mm.
When the switch 6 when using a certain combustion gas on (like the 20Y liquefied petroleum gas) master controller 5 is in a certain state; In the master controller 5 caller chips 9 with the corresponding control program of source of the gas (like the control program of 20Y liquefied petroleum gas); Control program is through the size of current of control electric-controlled gas control valve 3 (electric-controlled gas proportioning valves); And then the unlatching of valve is big or small in the control electric-controlled gas control valve 3; Thereby the pressure before the control nozzle 1 (like 98Pa～489Pa), finally control it and get into the gas quantity in burner 2, reaches the purpose of completing combustion.
When using another kind of combustion gas (like the 12T natural gas); The switch 6 that is provided with on the master controller 5 by hand is in another state; In the master controller 5 caller chips 9 with the corresponding control program of source of the gas (like the control program of 12T natural gas); Control program is through the size of current of control electric-controlled gas control valve 3 (electric-controlled gas proportioning valves), and then the unlatching size of valve in the control electric-controlled gas control valve 3, thereby the pressure before the control nozzle 1 is (like 250Pa～1250Pa); It gets into the gas quantity in the burner 2 final control, reaches the purpose of completing combustion.
Through switching the state of switch 6 on the master controller 5; Just can select the corresponding program in the caller chip; Like gas source is corresponding control programs such as 20Y liquefied petroleum gas, 12T natural gas, and under the identical situation of parts such as nozzle 1, burner 2, blower fan 4, the type of same structure only needs the state through configuration switch 6 just can call different and the corresponding control program of source of the gas; Thereby realize the source of the gas conversion; So it can use two kinds of sources of the gas, more ventilation is planted and need do not transformed gas heating water device, and then convenient the use.
Embodiment two: shown in accompanying drawing 4, accompanying drawing 4 is the structural representation of gas-heating water heater for the present invention, and its course of work and operation principle and embodiment one are similar, repeat no more at this.
Claims (10)
1. the gas heating water device of a dual gas supply; It comprises nozzle (1), burner (2), electric-controlled gas control valve (3), blower fan (4), master controller (5), program chip (9); Nozzle (1) is communicated with electric-controlled gas control valve (3); Described master controller (5) and blower fan (4), electric-controlled gas control valve (3), program chip (9) electrically connect, and it is characterized in that it also comprises switch (6), and described program chip (9) stores more than two and the corresponding control program of source of the gas; Described switch (6) is selected corresponding program in the caller chip (9), and described switch (6), program chip (9) electrically connect with master controller (5).
2. the gas heating water device of dual gas supply according to claim 1 is characterized in that described switch (6) is a slide switch.
3. the gas heating water device of dual gas supply according to claim 1 is characterized in that described switch (6) is a toggle switch.
4. according to the gas heating water device of each described dual gas supply of claim 1～3, it is characterized in that described electric-controlled gas control valve (3) is the electric-controlled gas proportioning valve.
5. according to the gas heating water device of each described dual gas supply of claim 1～3, it is characterized in that described nozzle (1) sectional area is by two kinds of sources of the gas settings that the source of the gas Wobbe index is low.
6. the gas heating water device of dual gas supply according to claim 4 is characterized in that described nozzle (1) sectional area is by two kinds of sources of the gas settings that the source of the gas Wobbe index is low.
7. according to the gas heating water device of each described dual gas supply of claim 1～3, it is characterized in that described switch (6) is an above switch element.
8. the gas heating water device of dual gas supply according to claim 4 is characterized in that described switch (6) is an above switch element.
9. the gas heating water device of dual gas supply according to claim 5 is characterized in that described switch (6) is an above switch element.
10. the gas heating water device of dual gas supply according to claim 6 is characterized in that described switch (6) is an above switch element.
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|---|---|---|---|
| CN201010507013XA CN102444987A (en) | 2010-10-06 | 2010-10-06 | Dual-air-source gas hot water supply device |
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|---|---|---|---|
| CN201010507013XA CN102444987A (en) | 2010-10-06 | 2010-10-06 | Dual-air-source gas hot water supply device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705995A (en) * | 2012-06-12 | 2012-10-03 | 美的集团有限公司 | Control method of gas water heater automatically adapting to multiple gas sources |
| CN104566375A (en) * | 2014-12-31 | 2015-04-29 | 罗红卫 | Fully premixed proportional control infrared burner |
| WO2019129281A1 (en) * | 2017-12-29 | 2019-07-04 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and parametric code transformation method and apparatus therefor |
| CN115264956A (en) * | 2022-07-20 | 2022-11-01 | 广东万家乐燃气具有限公司 | Control method of gas water heating equipment, gas water heating equipment and storage medium |
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| CN201811448U (en) * | 2010-10-06 | 2011-04-27 | 广东万和新电气股份有限公司 | Double-gas source fuel hot water supply device |
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Patent Citations (7)
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705995A (en) * | 2012-06-12 | 2012-10-03 | 美的集团有限公司 | Control method of gas water heater automatically adapting to multiple gas sources |
| CN102705995B (en) * | 2012-06-12 | 2014-11-26 | 美的集团股份有限公司 | Control method for gas water heater for automatically adapting to multiple gas sources |
| CN104566375A (en) * | 2014-12-31 | 2015-04-29 | 罗红卫 | Fully premixed proportional control infrared burner |
| WO2019129281A1 (en) * | 2017-12-29 | 2019-07-04 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and parametric code transformation method and apparatus therefor |
| CN109990478A (en) * | 2017-12-29 | 2019-07-09 | 芜湖美的厨卫电器制造有限公司 | The conversion method of gas heater and its parameter codes, device |
| CN109990478B (en) * | 2017-12-29 | 2020-06-30 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and method and device for converting parameter codes thereof |
| EP3653948A4 (en) * | 2017-12-29 | 2020-11-04 | Wuhu Midea Kitchen And Bath Appliances Mfg. Co, Ltd. | Gas water heater and parametric code transformation method and apparatus therefor |
| CN115264956A (en) * | 2022-07-20 | 2022-11-01 | 广东万家乐燃气具有限公司 | Control method of gas water heating equipment, gas water heating equipment and storage medium |
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Application publication date: 20120509 |