KR101758812B1 - Gas quantity calculation and a display method for the display boiler gas consumption - Google Patents

Abstract

The present invention relates to a method of calculating and displaying a gas amount for displaying a gas consumption amount of a boiler, and more particularly, Detecting an outside air temperature (Tout) using an outside air temperature detecting apparatus; Calculating a correction multiple Tgas according to the kind of the used gas by using an equation stored in the storage device; Detecting the number of revolutions of the current blowing fan or the current value of the proportional valve; Calculating a calorific gas amount (kW; Q1) corresponding to the rotational speed of the current blowing fan or the current value of the proportional valve; Calculating a corrected calorific value gas amount (kW; Q2) by multiplying the calorific gas amount (Q1) by a correction multiple (Tgas); And displaying the calculated calorific calorie gas amount Q2 in a display unit provided in the temperature regulating apparatus with a gas amount, and then returning to the step of detecting the outside air temperature Tout.
Therefore, it is possible to greatly improve the accuracy according to the indication of the gas consumption amount of the boiler to be provided to the consumer, and to accurately convert to the gas amount that is easy for the consumer to view, .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of calculating and displaying a gas amount for displaying a gas consumption amount of a boiler,

The present invention relates to a method of calculating and displaying a gas amount for displaying a gas consumption amount of a boiler. More specifically, the present invention relates to a method of calculating a gas amount for a boiler, The present invention relates to a method of calculating and displaying a gas amount for displaying a gas consumption amount of a boiler according to an embodiment of the present invention so that the accuracy of the gas consumption amount indication of the boiler can be greatly improved by correcting the gas amount using the outside air temperature detected by the detection device.

Generally, a boiler is installed to supply heating and hot water. It uses heat generated by burning various fuels to heat water, directly use heated water, or to be used for heating of a home or various buildings. And it is widely developed and used not only from small boiler used for household use to large boiler used for industrial use but also classified into oil boiler and gas boiler according to the fuel used and various kinds of boilers have been developed .

At this time, the gas boiler uses the gas, which is a clean fuel, as the fuel, burns it, heats the water using the heat generated in the burning process, circulates the heated water along the heating pipe in the room, And a function of supplying hot water to a sink or the like.

The operation of the conventional gas boiler will be briefly described. When the boiler is operated by the user, the gas valve (i.e., the proportional valve) is opened to supply the gas. The supplied gas is ignited after being introduced into the burner, Generates heat, and the generated high temperature heat rises while heating the heat exchanger.

The heating water circulates in the heat exchanger through the heating pipe, and is then forcedly circulated by the circulation pump. The exhaust gas passing through the heat exchanger is discharged through the exhaust pipe to the exhaust fan .

The heating water that circulates and radiates heat is returned to the boiler through the heat return pipe in a state where the temperature is relatively lower than the heating supply water, and the returned heating water passes through the water tank and then passes through the circulation pump again to the heat exchanger And then heated.

The temperature control function in the boiler operated as described above is performed by using a temperature controller attached to the boiler itself or by a remote controller installed indoors.

The remote control is configured to set the temperature of the heating water by the user to adjust the room temperature and to set the temperature within the range between the minimum temperature (20 ° C) and the maximum temperature (90 ° C) , It is possible to visually confirm the operating state of the boiler such as the reservation state, the heating, the hot water use state, and the combustion state by using the remote control key.

As described above, although the boiler is the most important and consumes the most energy, the remote control only shows the operation state of the boiler such as temperature and time, reserved state, heating, hot water use, The starting point and the heating point of the heating can not provide an environment in which the user can perceive and control the energy consumption of the device by only the sensory element of the user and empirical data so that the user can not manage the efficient use of energy Respectively.

In other words, it is impossible to know how much gas has been consumed to operate the boiler by controlling the boiler by temperature and time alone. As for the gas consumption amount when the gas consumption bill is released for one month, And the like, and were exposed to an environment that would cause undesired energy consumption.

In addition, the degree of use of the device is predicted by the installation year in which the operation time is ignored, so that the consumer and the technician do not know the proper state of the device.

Therefore, the applicant of the present invention can measure and display the consumption amount of the gas not only the temperature and the time, which are the basic control elements of the boiler, intuitively know the consumption amount of the gas, set the amount of gas to be consumed by the user, The boiler control apparatus and method capable of displaying and setting the gas consumption amount "has been developed in order to control the combustion of the boiler so as to save the energy by preventing the consumption of the unwanted gas, 1043894. < / RTI >

In addition, the "gas boiler and its method for guiding the consumption of gas", which calculates the consumption of gas consumed and the estimated gas cost during operation of the gas boiler and informs the user, is disclosed in Korean Patent Registration No. 10-1457176.

However, since the two boilers described above memorize the relationship between the amount of gas, the number of rotations of the blowing fan, or the current of the proportional valve, the amount of gas can be indirectly checked by the number of revolutions of the blowing fan or the current of the proportional valve. However, The current of the water or proportional valve is stored as the standard gas amount (gas amount corrected to 15 ° C gas temperature) by KS B 8101 (2011), Korean standard for "Test method of gas combustion device" There is a problem.

In other words, the amount of gas in the boiler is indicated by [total gas heat amount (101.3 kPa, 15 ℃, dry gas) corrected gas consumption amount] by KS B 8101 (2011), so the number of revolutions of the blowing fan or proportional valve The relation between the current and the gas amount is stored based on the temperature of 15 ° C in the above-mentioned contents. The gas amount can be indirectly confirmed by the number of revolutions of the blowing fan or the current of the proportional valve, but it has an error according to the gas temperature.

In addition, KS B 8101 (2011) uses the unit of calorific value (kW) to calculate the amount of gas in the boiler. In order to calculate the amount of gas, the actual amount of gas used is the volume of gas (㎥ / h) use.

However, the volume of the gas is expanded when the temperature rises and the volume is reduced when the temperature is lowered. Even if the same volume of gas (m 3) is measured, the calories per unit volume (kW / m 3) do.

Therefore, in KS B 8101 (2011), the gas temperature is always calibrated on the basis of 15 ° C according to the gas temperature, and the calculation is made with the same amount of gas, but the actual amount of the measured gas (m 3) varies depending on the temperature.

Therefore, in most conventional boilers, although the gas temperature is indirectly known to the reference temperature of 15 ° C, in reality, when the gas temperature exceeds 15 ° C in the boiler, the gas amount is recognized to be low. When the gas temperature is less than 15 ° C There is a problem that an amount of gas is recognized to be high and an error is generated.

Korean Registered Patent No. 10-0223302 (July 08, 1999) Korean Registered Patent No. 10-1043894 (June 16, 2011) Korean Registered Patent No. 10-1457176 (Oct. 27, 2014)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the related art, and it is an object of the present invention to provide a method and apparatus for calculating a standard gas amount according to a rotation speed of a blowing fan or a proportional valve, By correcting the gas amount (that is, the gas amount calculated on the basis of the gas temperature of 15 ° C) using the detected outside air temperature, it is possible to significantly improve the accuracy according to the gas consumption amount indication of the boiler, And a method for calculating and displaying a gas amount for displaying the gas consumption amount of a boiler which can be switched.

According to another aspect of the present invention, there is provided a method for controlling a boiler, comprising the steps of: Detecting an outside air temperature (Tout) using an outside air temperature detecting apparatus; Calculating a correction multiple Tgas according to the kind of the used gas by using an equation stored in the storage device; Detecting the number of revolutions of the current blowing fan or the current value of the proportional valve; Calculating a calorific gas amount (kW; Q1) corresponding to the rotational speed of the current blowing fan or the current value of the proportional valve; Calculating a corrected calorific value gas amount (kW; Q2) by multiplying the calorific gas amount (Q1) by a correction multiple (Tgas); And displaying the calculated calorific calorie gas amount Q2 in a display unit provided in the temperature regulating apparatus with a gas amount, and then returning to the step of detecting the outside air temperature Tout.

Before calculating the calorific calorie gas amount Q2 and displaying the calorific gas amount Q2 on the display unit provided in the temperature regulator, it is determined whether the selected display unit to be displayed on the display unit is a calorie gas quantity Q2, (KW / m3; Qc) depending on the type of gas used and if the display unit is not the calorie gas quantity Q2 (that is, the volume of gas is m3) (Q3) is calculated through the equation of dividing the calorific value gas amount Q2 by the amount of gas Q2 divided by the amount of gas Q2 And the correction volume gas amount Q3 is displayed.

At this time, the correction factor Tgas is calculated by an equation (Tgas = a 占 Tout + b) that multiplies the slope a of the relational expression by the outside temperature Tout and adds the offset value b having the determined value to the result thereof. .

The calorific value (kW / m < 3 >; c) to be corrected by the volume gas amount (m3) is calibrated according to the temperature in the caloric gas amount (kW) .

As described above, according to the gas amount calculation and display method for displaying the gas consumption amount of the boiler according to the present invention, after calculating the standard gas amount according to the number of revolutions of the blowing fan for supplying gas to the burner of the boiler or the current of the proportional valve, (That is, the gas amount calculated on the basis of the gas temperature of 15 DEG C) by using the outside air temperature detected by the outside air temperature detection device, thereby greatly improving the accuracy according to the gas consumption amount indication of the boiler provided to the consumer, Can be accurately converted to a gas amount that is easy to see, so that it is a very useful invention that the reliability of the boiler itself can be greatly improved according to the commerciality and the gas consumption amount indication.

1 is a schematic block diagram of a boiler to which the method of the present invention is applied;
2 is a flow chart for explaining the method of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is a schematic block diagram of a boiler to which the method of the present invention is applied, and FIG. 2 is a flow chart for explaining the method of the present invention.

According to the present invention,

(S1) of confirming the type of the used gas when the result of the determination by the controller (1) of the boiler is a combustion instruction signal;

(S2) of detecting the outside air temperature Tout by using the outside air temperature detecting device (3);

(A) and the offset value (b) are compared with the correction multiple calculation expression (a x Tout + b) stored in the storage device 12 so that the correction multiple Tgas corresponding to the type of the used gas Calculating (S3);

(S4) of detecting the rotational speed of the current blowing fan (41) or the current value of the proportional valve (51) flowing through the gas supply drive device (5) calculated through the current flowing through the fan drive device (4);

Calculating (S5) a calorific gas amount (kW; Q1) corresponding to the rotational speed of the current blowing fan (41) or the current value of the proportional valve (51);

(S6) of calculating a calorific value gas amount (kW; Q2 = Q1 X Tgas) by multiplying the calorific gas amount (Q1) by a correction multiple (Tgas);

Returning the calculated corrected calorific value gas amount Q2 to the display unit 21 provided in the temperature regulating device 2 in step S7 and then returning to step S2 of detecting the outdoor temperature Tout; .

Before the correction calorie gas amount Q2 is calculated (S6) and then displayed on the display unit 21 provided in the temperature regulating device 2 by the gas amount (S7)

It is determined whether the selected display unit to be displayed on the display unit 21 is the calorie gas quantity Q2 (S8)

If the selected display unit is not the calorie gas quantity Q2 (No at S8; that is, the volume of the gas is m3), the calorific value (kW / m3; Qc)

Q3 = Q2 / Qc is calculated (S10) by dividing the corrected calorific value gas amount (kW; Q2) by the calorific value (kW / m3; Qc)

(Q3) is displayed instead of the calorific calorie gas amount (Q2) when the display unit (21) provided in the temperature controller (2) displays the gas amount (S7).

The calorific value (kW / m3; c) for calibrating by the volume gas volume (m3) is calibrated according to the temperature in the caloric gas quantity (kW) .

Reference numeral 11 denotes an arithmetic unit provided in the control device 1, 22 denotes a unit switching device provided in the temperature control device 2, 6 denotes a heating water supply temperature detection device 7 is an ignition device, and 8 is a flame detection device.

The operation and effect of the method according to the present invention will now be described with reference to FIGS. 1 and 2. FIG.

First, in the method of the present invention, the gas amount calculated on the basis of the gas temperature of 15 ° C is corrected to the outside air temperature (Tout) detected by the outside air temperature detecting device 3 to minimize the error when displaying the gas consumption amount of the boiler .

To this end, the relationship between the number of revolutions of the blowing fan 41 or the amount of caloric gas amount (kW) by the current value of the proportional valve 51 is input to the storage device 12 provided in the control device 1, (Tgas = a 占 Tout + b) according to the gas temperature based on the drainage "1.0" is inputted to the storage device 12. However, there are various kinds of gas used as the fuel for the boiler, Since the volume change is different depending on the temperature, the correction multiple relation is prepared in advance for each gas type and inputted in the memory device 12 in advance.

On the other hand, in the boiler control apparatus 1 to which the present invention is applied, the type of the used gas is checked (S1) when there is a normal combustion instruction signal, and the outside air temperature Tout is detected through the outside air temperature detection device 3 (S2).

The control device 1 then calculates the slope a and the offset value b of the outside air temperature and the related equation detected through the outside air temperature detection device 3 in accordance with a predetermined correction multiple calculation expression a × Tout + b), a correction multiple Tgas corresponding to the type of the used gas is calculated (S3).

That is, the correction multiple Tgas through the calculation formula (Tgas = a 占 Tout + b) that multiplies the slope a of the relational expression by the outside temperature Tout and adds the offset value b having the again determined value to .

Here, "Tgas = a × Tout + b" is a value obtained by multiplying the ratio of the volume of gas (m 3) by the gas temperature, which is the same calorific gas amount (kW) calculated on the basis of the gas temperature of 15 ° C., Quot; a "is the slope of the relational expression, and" b "is the offset value of the relational expression.

For example, in order to have a gas volume of 40 kW, 3.48 m 3 / h should be supplied at a gas temperature of 15 ° C., 3.39 m 3 / h at a gas temperature of 0 ° C. and 3.57 m 3 / When / h is supplied, the gas volume becomes 40 kW.

Therefore, assuming that the gas amount is 3.48 m 3 / h when the gas temperature is 15 ° C and the corrected drainage is 1.00, the gas amount is 0.97 and 1.03 when the gas temperature is 0 ° C and 30 ° C, respectively. The relationship of the correction multiple can be represented by the expression "Tgas = a 占 Tout + b ", wherein the slope " a" and the offset value "b"

As described above, the correction multiples Tgas are calculated by the control device 1 so as to detect the rotational speed of the current blowing fan 41 through the current flowing in the fan driving device 4, (KW; Q1) is calculated by using the rotational speed of the blowing fan 41 or the current value of the proportional valve 51 by detecting the current value of the proportional valve 51 flowing through the exhaust fan 41 Calculation (S5) is performed and then the corrected calorific value gas amount (kW; Q2) is calculated (S6) by a method of multiplying the calorific gas amount (Q1) by the correction multiple Tgas previously calculated (i.e., Q1 X Tgas) .

Then, in the control device 1, the calorific calorie gas amount Q2 calculated so as to allow the consumer to easily know the gas use amount is displayed on the display unit 21 provided in the temperature regulating device 2 with the gas amount (S7) The process returns to step S2 of detecting the outside temperature Tout and repeats the subsequent steps.

In the present invention, before the control device 1 calculates the calorific calorie gas quantity Q2 (S6) and then displays the calorific gas quantity Q2 in the gas quantity on the display unit 21 provided in the temperature regulating device 2 (S7) It is determined whether the selected display unit to be displayed on the display unit 21 is the calorie gas quantity Q2 (S8).

If the consumer determines that the selected display unit to be displayed on the display unit 21 is the calorific gas quantity Q2 in step S8 as a result of the determination, the calorific calorie gas quantity Q2 is immediately provided to the temperature regulating device 2 If the selected display unit is not the calorific gas amount Q2 (No in S8), that is, the volume gas amount (m3), the calorific value kW / (Q3) through a method (Q2 / Qc) in which the calorific gas amount (kW; Q2) is divided by the calorific value (kW / m3; Qc) The corrected calorific value gas amount Q2 is displayed instead of the calorific calorie gas amount Q2 when the gas amount is displayed on the display unit 21 provided in the temperature regulating device 2 in step S7.

Q2 ", which is the calorific value gas amount (kW), is displayed on the display unit 21 of the temperature regulating device 2 and the amount of the volumetric gas (kW) 3) is calculated by dividing the corrected calorific value gas amount (kW; Q2) by the calorific value (kW / m3; Qc) corresponding to the gas type and calculating the corrected calorific value gas amount (m3; Q3) And is displayed on the display unit 21 of the adjusting device 2. [

Therefore, it is possible to greatly improve the accuracy according to the indication of the gas consumption amount of the boiler provided to the consumer, and to accurately convert the gas amount into a convenient gas amount for the consumer, will be.

The calorific value (kW / m3; Qc) for calibrating by the volume gas amount (m3) is calibrated according to the temperature in the caloric gas amount (kW) will be.

It should be noted that the unit of "kW" and the unit of volume "m3" of the calorific gas amount are merely one example, and other calorific units and volumetric units can be used, and the calorific value units .

Although the preferred embodiments of the present invention have been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. Which will be apparent to those skilled in the art.

1: Control device
11: computing device 12: storage device
2: Thermostat
21: display unit 22: unit switching device
3: Outside temperature detector
4: fan drive device 41: blowing fan
5: gas supply drive device 51: proportional valve
6: Supply temperature detection device
7: Ignition device
8: Flame detector

Claims (4)

As a result of the determination by the control device, if there is a combustion instruction signal,
Confirming the kind of the used gas;
Detecting an outside air temperature (Tout);
Calculating a correction multiple Tgas according to the kind of the used gas by using an equation stored in the storage device;
Detecting the number of revolutions of the current blowing fan or the current value of the proportional valve;
Calculating a calorific gas amount (kW; Q1) corresponding to the rotational speed of the current blowing fan or the current value of the proportional valve;
Calculating a corrected calorific value gas amount (kW; Q2) by multiplying the calorific gas amount (Q1) by a correction multiple (Tgas);
Displaying the calculated calorific calorie gas amount Q2 by a gas amount on a display unit provided in the temperature regulating apparatus, and then returning to the step of detecting the outside air temperature Tout,
The correction multiple (Tgas)
Is calculated by an equation (Tgas = a 占 Tout + b) that multiplies the slope (a) of the relational expression by the outside air temperature (Tout) and adds the offset value (b) having a predetermined value to the result thereof. Calculation and display of gas quantities for consumption indication.
The method according to claim 1,
After calculating the calorific calorie gas amount Q2, before displaying the calorific calorie gas amount Q2 in the display unit provided in the temperature controller,
It is determined whether the selected display unit desired to be displayed on the display unit by the consumer is the calorific gas quantity Q2,
If the selected display unit is not the calorie gas quantity (Q2), check the calorific value (kW / m3; Qc)
(Q3) by dividing the calorific value calorie gas amount (kW; Q2) by the calorific value (kW / m3; Qc)
And the corrected calorific value gas amount (Q2) is displayed instead of the corrected calorific value gas amount (Q3) when the gas amount is displayed on the display unit provided in the temperature regulating device.
delete The method of claim 2,
The calorific value (kW / m3; c) for correcting to the volume of gas (m3)
Wherein the calorific value (kW / m3; Qc) based on the gas temperature of 15 DEG C is used for the correction of the calorific gas amount (kW) according to the temperature.

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