TW201317521A - Heating control method for gas combustion apparatus - Google Patents

Abstract

A heating control method for a gas combustion apparatus comprises the following steps: A. reading a first data from a database; B. performing heating according to the first data; C. calculating the heating efficiency of the gas combustion apparatus; D. determining whether the heating efficiency of the gas combustion apparatus is lower than a predetermined efficiency; repeating steps B to C if not,; reading a second data from the database and performing heating according to the second data if yes. As such, the improvement of heating efficiency can be achieved through the above design and reading according to different data.

Description

Heating control method for gas burning appliance

The present invention relates to a gas burner, and more particularly to a method of heating control of a gas burner.

With the advancement of industrial technology, gas burners such as water heaters and fireplaces have become more and more popular in various households, and more and more safety devices related to gas appliances have been used in order to enable people to use gas burning appliances in safety. Or the automation of the regulation method came out, pray that when the heating efficiency of the gas burner is not ideal, the heating efficiency of the gas burner can be improved by adjusting the amount of water, air or gas, so as to increase the safety of the gas appliance. It can make the user safer when using gas burning appliances.

When refining gas, the various combustible gases in the gas are usually not separately extracted. Therefore, after the gas is filled, the barrel gas usually contains two or more combustible gases (such as propane, butane, etc.). In general, since propane is lighter than butane, butane is easily deposited on the bottom of the tank, when the gas burner is used in the barrel gas, it is usually heated by burning propane, and after a while, the propane is gradually burned. At the end of the day, it was gradually changed to heating with burning butane. However, when testing the best data of air-fuel ratio or water ratio, the industry usually only burns a single combustible gas or a plurality of combustible gases in a specific proportion, which will make the conventional control method usually only for one of the combustible gases, or The optimal air-fuel ratio or water ratio of a plurality of combustible gases mixed in a specific ratio is regulated by heating efficiency, and the control result is not ideal. For example, the industry usually uses the first propane gas that is burned in the barrel gas as the basis for adjusting the heating efficiency. However, when the propane is gradually burned and gradually changed to burn with butane, it is still calculated as propane. The optimal air-fuel ratio or water ratio is controlled by the heating efficiency, which not only makes the adjustment of the heating efficiency inaccurate, but also makes it possible to cause the butane combustion to be incomplete when the air is supplied to the butane by the optimum air-fuel ratio of propane. The situation of carbon monoxide, which in turn jeopardizes the safety of users. Therefore, in summary, it can be known that the conventional control methods are still not perfect, and there is still room for improvement.

In view of this, the main object of the present invention is to provide a heating control method for a gas burner, which can change the air-fuel ratio or the water supply ratio according to the difference of the combustible gas to achieve the purpose of improving the heating efficiency.

In order to achieve the above object, the method for controlling heating of a gas burning appliance provided by the present invention comprises the following steps:

A. reading a first data from a database;

B. heating according to the first data;

C. Calculating the heating efficiency of the gas burner;

D. comparing whether the heating efficiency of the gas burner is lower than a preset efficiency; if not, repeating step B to step C; if so, reading a second data from the database, and according to the second data The data is heated.

According to the above concept, in step B, the amount of gas supplied to the gas burner is adjusted according to a predetermined first air-fuel ratio stored in the first data.

According to the above concept, in step D, the amount of gas supplied to the gas burning appliance is adjusted according to a predetermined second air-fuel ratio air-fuel ratio stored in the second data material for heating.

According to the above concept, in step B, the amount of air supplied to the gas burner is adjusted according to a predetermined first air-fuel ratio stored in the first data.

According to the above concept, in step D, the amount of air supplied to the gas burner is adjusted according to a predetermined second air-fuel ratio stored in the second data.

According to the above concept, in step B, the amount of water supplied to the gas burning appliance is adjusted according to a predetermined first water supply amount ratio stored in the first data.

According to the above concept, in step D, the amount of water supplied to the gas burning appliance is adjusted according to a predetermined second water supply amount ratio stored in the second data.

According to the above concept, in step C, the heating efficiency of the gas burner is calculated by measuring the concentration of carbon dioxide generated after heating.

According to the above concept, in step C, the heating efficiency of the gas burner is calculated by measuring the water temperature before and after heating and comparing the supplied heat energy.

Thereby, through the above design, the gas burning appliance can change the data data read by the gas burning appliance according to the difference of the combustible gas, and then the air-fuel ratio or the water supply ratio can be changed to achieve the purpose of improving the heating efficiency.

In order that the present invention may be more clearly described, the preferred embodiments are illustrated in the accompanying drawings.

Please refer to FIG. 1 , which is a gas-fired appliance using the heating and regulating method of the present invention. In the embodiment, the gas burning appliance is a strong attack type water heater, but not limited thereto. The gas burner includes a heater 10, a gas line 11, a gas conditioning device 12, a blower 13, a sensor 14, a storage device 15, and a controller 16. Wherein: the heater 10 is disposed under a water pipe 100 for heating the water in the water pipe 100, and the gas generated by heating the heater 10 is discharged by an exhaust pipe 110.

The gas line 11 is in communication with a gas tube 120 for transporting gas stored in a barrel of gas to the heater 10.

The gas adjusting device 12 is a gas proportional valve in the present embodiment, and is connected to the gas line 11 and has the effect of adjusting the amount of gas supplied to the heater 10 to adjust the heating performance of the heater 10. The gas proportional valve The "gas flow rate control valve" shown in the U.S. Patent Publication No. 20090206291A1, which is incorporated by the applicant, utilizes a current supply to cause the valve to be proportionally opened, that is, when the current supply is increased, the valve opening degree is proportionally increased. The gas flow rate provided is also proportionally increased. Of course, the design of other mechanisms, such as the rotary dislocation opening method, can be utilized as long as the control of the gas quantity can be controlled and calculated.

The blower 13 is disposed under the heater 10 for introducing external air to the heater 10, thereby mixing with the gas to achieve the effect of assisting combustion, thereby achieving the purpose of adjusting the heating performance of the heater 10; as is known in the art, The rotational speed of the blower 13 is proportional to the amount of air supplied, that is, the higher the rotational speed of the blower 13, the more air is supplied, and the lower the rotational speed of the blower 13, the less the amount of air supplied.

In this embodiment, the sensor 14 is a carbon dioxide sensor disposed on the exhaust duct 110 for measuring the concentration of carbon dioxide in the gas generated by the heater 10 after being heated.

The storage device 15 stores a database, and the database has a first data file and a second data file. Wherein, the first air data has a first air-fuel ratio and a second air-fuel ratio, wherein the first air-fuel ratio is an optimal air-fuel ratio of a first combustible gas (such as propane); and the second air-fuel ratio is The optimum air-fuel ratio of a second combustible gas such as butane.

The controller 16 is electrically connected to the gas adjusting device 12, the blower 13, the sensor 14, and the storage device 15, and is heated and regulated by the following method. Referring to FIG. 2, the method includes the following steps:

A. reading the first data from the database;

B. heating according to the first data data; in this embodiment, controlling the gas adjustment device 12 to adjust the amount of gas supplied to the heater 10 according to the first air-fuel ratio stored in the first data, for heating, The heater 10 can be maintained at a higher heating efficiency; of course, in addition to controlling the gas regulating device 12, the blower 13 can be controlled to adjust the amount of air supplied to the heater 10 according to the first air-fuel ratio, and Alternatively, the gas adjusting device 12 is controlled to adjust the amount of gas supplied to the heater 10 in accordance with the first air-fuel ratio, and the air blower 13 is controlled to adjust the amount of air supplied to the heater 10 for heating.

C. Calculating the heating efficiency of the gas burner; in this embodiment, the sensor 14 is used to sense and measure the humidity of the water gas generated after heating to calculate the heating efficiency of the gas burner; taking propane as an example When propane is burned and reacts with oxygen, its chemical formula is as follows:

C3H8+5O2→4H2O+3CO2

According to the above chemical formula, when the product of the combustion of propane and oxygen is water gas, carbon dioxide and heat of a predetermined size, the carbon dioxide concentration of the exhaust pipe 110 can be measured through the sensor 14. The change is to infer whether propane is completely burned, and thus achieve the purpose of calculating the heating efficiency of the gas burner.

D. comparing whether the heating efficiency of the gas burner is lower than a preset efficiency; if not, repeating step B to step D; if so, it indicates that the first combustible gas in the barrel gas has gradually burned out and will gradually The second combustible gas is burned for heating, and at this time, the second data is read from the database, and heated according to the second air-fuel ratio of the second data.

In this embodiment, step D is to control the gas adjustment device 12 to adjust the amount of gas supplied to the heater 10 according to the second air-fuel ratio in the second data, but not limited thereto, and may also be controlled. The blower 13 adjusts the amount of air supplied to the heater 10 for heating, or simultaneously controls the gas adjusting device 12 to adjust the amount of gas supplied to the heater 10, and controls the blower 13 to adjust the air supplied to the heater 10. The amount is heated to achieve the same purpose.

Therefore, through the above design, the gas burning appliance can change the data data read by the gas burning appliance according to the difference of the combustible gas, and then the heating efficiency can be improved by changing the corresponding air-fuel ratio.

In addition, in addition to the above design, please refer to FIG. 3, which is another gas burning appliance using the heating regulation method of the present invention, which is also a strong attack type water heater, and is different from the above embodiment in the gas burning appliance. Further comprising a water volume adjusting device 20, a water inlet temperature sensor 21 and an outlet water temperature sensor 22, and the first data data and the second data data in the database respectively have one of corresponding different combustible gases. a first water supply ratio and a second water supply ratio, wherein the water volume adjusting device 20 is disposed at the water inlet end of the water pipe 130 of the gas burning appliance for adjusting the amount of water supplied to the water pipe 130, and the water inlet temperature The sensor 21 and the water outlet temperature sensor 22 are respectively installed at the water inlet end and the water outlet end of the water pipe 130 for respectively measuring the water temperature before and after heating.

In this way, through the above design, and through the following methods for heating regulation:

A. reading the first data from the database;

B. heating according to the first data; in the embodiment, controlling the water amount adjusting device 20 to adjust the amount of water supplied to the gas burning device according to the first water supply amount ratio stored in the first data;

C. Calculating the heating efficiency of the gas burner; in the embodiment, the water temperature sensor 21 and the water temperature sensor 22 are used to measure the water temperature before and after heating and compare the heat energy supplied to calculate The heating efficiency of the gas burner;

D. comparing whether the heating efficiency of the gas burner is lower than a preset efficiency; if not, repeating step B to step D; if so, it indicates that the first combustible gas in the barrel gas has gradually burned out and will gradually The second combustible gas is burned to be heated, and at this time, the second data is read from the database, and heated according to the second water supply amount of the second data.

Thereby, through the above design, the gas burning appliance can change the data data read by the gas burning appliance according to the difference of the combustible gas, and then the heating energy efficiency can be improved by changing the corresponding water supply amount.

In addition, in addition to the above-mentioned two-stage adjustment method, a plurality of data materials corresponding to different combustible gases or a plurality of combustible gases may be added to the database, and the effect of multi-stage adjustment is made, so that the above-mentioned The heating regulation method can maintain the heating efficiency of the gas burner more than a certain efficiency.

The above description is only for the preferred embodiments of the present invention, and the equivalent method variations of the present invention and the scope of the patent application are intended to be included in the scope of the present invention.

10. . . Heater

11. . . Gas pipeline

12. . . Gas adjustment device

13. . . Blower

14. . . Sensor

15. . . Storage device

16. . . Controller

100. . . Water pipe

110. . . Exhaust pipe

120. . . Gas tube

20. . . Water volume adjustment device

twenty one. . . Inlet water temperature sensor

twenty two. . . Outlet temperature sensor

130. . . Water pipe

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a gas burner for use in the heating control method of the present invention.

2 is a flow chart of a heating regulation method of the present invention.

Figure 3 is another gas burner using the heating control method of the present invention.

This figure is a flow chart, so there is no component symbol.

Claims (9)

A heating control method for a gas burning appliance comprises the following steps: A. reading a first data data from a database; B. heating according to the first data data; C. calculating a heating efficiency of the gas burning appliance; Comparing whether the heating efficiency of the gas burner is lower than a preset efficiency; if not, repeating step B to step D; if so, reading a second data from the database, and according to the second data Heat up. The method for controlling the heating of a gas burner according to claim 1, wherein in step B, the amount of gas supplied to the gas burner is adjusted according to a predetermined first air-fuel ratio stored in the first data. The method for controlling the heating of a gas burning appliance according to claim 1, wherein in step D, the amount of gas supplied to the gas burning appliance is adjusted according to a predetermined second air-fuel ratio air-fuel ratio stored in the second data. heating. The method for controlling the heating of a gas burner according to claim 1, wherein in step B, the amount of air supplied to the gas burner is adjusted according to a predetermined first air-fuel ratio stored in the first data. The method for controlling the heating of a gas burner according to claim 1, wherein in step B, the amount of air supplied to the gas burner is adjusted according to a predetermined second air-fuel ratio stored in the second data. The method for controlling the heating of a gas burner according to claim 1, wherein in step B, the amount of water supplied to the gas burner is adjusted according to a predetermined first water supply amount stored in the first data. The method for controlling the heating of a gas burner according to claim 1, wherein in step D, the amount of water supplied to the gas burner is adjusted according to a predetermined second water supply amount stored in the second data. The heating control method of the gas burner according to claim 1, wherein in the step C, the heating efficiency of the gas burner is calculated by measuring the concentration of carbon dioxide generated after the heating. The heating control method of the gas burner according to claim 1, wherein in the step C, the heating efficiency of the gas burner is calculated by measuring the water temperature before and after the heating and comparing the supplied heat energy.