KR19990017392A - Gas boiler hot water temperature control method - Google Patents

Abstract

The present invention relates to a method for controlling a hot water temperature of a gas boiler, and more particularly, a multi-stage control for controlling a hot water temperature to approach a set temperature quickly in a gas boiler having a function of setting hot water temperature to high, medium, and low three. Gas boiler hot water temperature control method of the type, in particular when the indirect control of the hot water temperature by measuring the heating water temperature.

The gas boiler hot water temperature control method of the multi-stage control system of the present invention includes a microcomputer 26 for controlling the entire stroke, a gas valve 4 controlled to supply a predetermined amount of gas to the burner 28, and a heating water temperature. In the gas boiler having a temperature detection unit 10 for measuring the temperature and the room cone 24 having a function of setting hot water temperature to high, medium and low, when the hot water use mode is sensed by the microcomputer 26, it is set by the user. A first step of reading the hot water temperature and measuring the temperature of the heating supply water from the temperature sensing unit 10; A second step of comparing the measured heating supply water temperature and the set temperature with the microcomputer 26; A third step of controlling in the microcomputer 26 to burn with a maximal force when the comparison result is the heating water temperature (set temperature-10 ° C.); A fourth step of controlling in the microcomputer 26 to burn at a maximum heating power of 3/4 when the heating water temperature (the set temperature is 5 ° C.); If the heating water temperature ≤ the set temperature, it is composed of a fifth step of controlling by the microcomputer 26 so as to burn with a maximum power of 1/4 and the heating water temperature exceeds the set temperature.

Description

Gas boiler hot water temperature control method

The present invention relates to a method for controlling a hot water temperature of a gas boiler, and more particularly, a multi-stage control for controlling a hot water temperature to approach a set temperature quickly in a gas boiler having a function of setting hot water temperature to high, medium, and low three. Gas boiler hot water temperature control method of the type, in particular when the indirect control of the hot water temperature by measuring the heating water temperature.

Gas boilers are increasingly being used because of the use of clean fuel gas, which reduces pollutants and reduces environmental pollution. 1 and 2 is a schematic configuration and block circuit diagram of a conventionally used gas boiler has a heating mode for performing indoor heating and a hot water mode for supplying hot water to the bathroom or sink. Referring to Figures 1 and 2 will be described briefly the operating state.

As shown in FIG. 1, the gas boiler controls the gas valve 4 to supply a predetermined amount of gas to the burner 28 while igniting and burning it in the burner 28 and using high temperature heat generated at this time. to be. The ignition in the burner 28 applies a high voltage to the igniter 22 after the gas is supplied and ignites the gas by the spark generated at this time. The hot heat generated by the ignition rises and heats the heat exchanger 30 installed on the upper side of the burner 28. The detection of the ignition state is detected by the salt voltage detection unit 12 by transmitting the ignition state data to the microcomputer 26. In the heat exchanger 30, heating water and direct water flow, respectively. Direct water flows in through the direct water supply pipe 2a, passes through the heat exchanger 30, and is discharged through the other end of the direct water supply pipe 2a after the water temperature is elevated by heat exchange with the heating water.

On the other hand, the heating water passes through the supply pipe 38 is moved to the pipe (not shown) installed indoors. At this time, the movement to the water tank 34 or the circulation pump 20 by the three-way side 36 is blocked. The heat is deprived of heat while passing through the heating pipe installed in the room, and the temperature of the heated water is introduced into the water tank 34. The water tank 34 is a temporary storage of the heating return water and is also connected to the automatic refill water valve 18 for replenishing insufficient heating water. The automatic refill water valve 18 is connected to the direct water supply pipe 2a to replenish water when the water tank 34 lacks water. The heating water introduced into the water tank 34 passes through the three-way valve 36-the circulation pump 20-the return pipe 40 and then enters the heat exchanger 30 to be heated up, and then through the supply pipe 38. Repeat the cycle.

Among the conventional gas boilers configured as described above, a low-cost gas boiler configured to set hot water temperature setting to high, medium, and low in the room cone 24 is used. The hot water temperature setting is mainly used in low-cost boilers because the user can easily set the hot water temperature and a complicated circuit is not required. However, in the boiler, since the hot water temperature range is set in a predetermined range, the hot water response speed is slow, causing inconvenience in hot water supply. In particular, the indirect control method in which the heating water temperature is measured and controlled by assuming a corresponding temperature as the hot water temperature has caused a problem that the hot water temperature does not reach the set temperature accurately.

The present invention has been made to solve the above problems, an object of the present invention is to quickly approach the hot water set temperature in the gas boiler having a function of setting the hot water temperature to the three heating water temperature of high, medium, low It is to provide a gas boiler hot water temperature control method of a multi-stage control method to control to.

Gas boiler hot water temperature control method of the multi-stage control method of the present invention for achieving the above object is a microcomputer 26 for controlling the entire stroke, and the gas valve 4 is controlled to supply a predetermined amount of gas to the burner 28 And a gas boiler having a temperature sensing unit 10 for measuring a heating water temperature and a room cone 24 having a function of setting hot water temperature to high, medium and low, the hot water use mode is detected by the microcomputer 26. A first step of reading the hot water temperature set by the user and measuring the temperature of the heating supply water from the temperature sensing unit 10; A second step of comparing the measured heating supply water temperature and the set temperature with the microcomputer 26; A third step of controlling in the microcomputer 26 to burn with a maximal force when the comparison result is the heating water temperature (set temperature-10 ° C.); A fourth step of controlling in the microcomputer 26 to burn at a maximum heating power of 3/4 when the heating water temperature (the set temperature is 5 ° C.); If the heating water temperature ≤ the set temperature, it is composed of a fifth step of controlling by the microcomputer 26 so as to burn with a maximum power of 1/4 and the heating water temperature exceeds the set temperature.

1 is a schematic configuration diagram of a gas boiler conventionally used;

2 is a block circuit diagram of the gas boiler of FIG.

3 is a flowchart for explaining the method of the present invention.

Explanation of symbols for the main parts of the drawings

2: flow switch, 4: gas valve,

6: fan rotation speed detection unit, 8: water level detection unit,

10: temperature detection unit, 12: salt voltage detection unit,

14: exhaust fan, 16: power supply,

18: automatic refill water valve, 20: circulation pump,

22: igniter, 24: room cone,

26: micom, 28: burner,

30: heat exchanger, 32: exhaust hood,

34: water tank, 36: triangulation,

38: return pipe, 40: supply pipe.

Hereinafter, a method of the present invention will be described with reference to the accompanying drawings.

The present invention is a method applied to the boiler to set the hot water temperature in a limited range, such as high, medium, low in advance, the hot water supply method that takes a lot of time to reach the conventional set temperature using the heating water temperature. Multi-stage control is a multi-stage control gas boiler hot water temperature control method with improved response speed.

The method of the present invention as described above comprises the following steps: when the hot water use mode is detected in the microcomputer 26, a first reading the hot water temperature set by the user and measuring the temperature of the heating supply water from the temperature sensing unit 10; step; A second step of comparing the measured heating supply water temperature and the set temperature with the microcomputer 26; A third step of controlling in the microcomputer 26 to burn with a maximal force when the comparison result is the heating water temperature (set temperature-10 ° C.); A fourth step of controlling in the microcomputer 26 to burn at a maximum heating power of 3/4 when the heating water temperature (the set temperature is 5 ° C.); And a fifth step of controlling the microcomputer 26 to burn at 1/4 maximum thermal power if the heating water temperature ≤ a set temperature and to burn at a minimum force if the heating water temperature exceeds the set temperature.

In the method of the present invention, the microcomputer 26 determines whether the boiler is in the hot water mode. When the heating mode is detected, the microcomputer 26 operates in the heating mode. If it is determined that the hot water mode, the microcomputer 26 measures the temperature of the heating water supply using the temperature sensor 10a of the temperature sensing unit 10. The heating water temperature measured by the temperature sensor 10a becomes a reference temperature assuming hot water temperature. In other words, the boiler measures the heating water temperature and accordingly assumes the hot water temperature and uses it for control.

At the same time when the hot water mode is confirmed, the microcomputer 26 reads the hot water temperature set by the user. For example, if the hot water temperature is high, the heating water temperature is 85 ℃, the heating water temperature is 75 ℃, and if it is low, the heating water temperature is 65 ℃, which depends on the type and size of the boiler. It will be apparent to those skilled in the art that the present invention may be changed.

As described above, when the set (heating water) temperature is read by the user and the heating water temperature is detected from the temperature sensor 10a, the microcomputer 26 compares the two temperature data. As a result of the comparison, if the heating water temperature (set temperature-10 ° C) is low, the microcomputer 26 controls the combustion to maximize the hot water temperature in order to quickly increase the hot water temperature. Therefore, the hot water temperature rises rapidly.

If the combustion power is maximized or the measured heating water temperature satisfies the heating water temperature (set temperature-5 ° C), the microcomputer 26 controls to burn at 3/4 maximum fire power. This is to approach the hot water temperature to the set temperature without using excessive gas consumption because the heating water temperature is approaching the set (heating water) temperature.

If the heating water temperature ≤ the set temperature, the microcomputer 26 outputs a control signal to the gas valve 4 so as to burn at a 1/4 maximum thermal power. Again, this is because the heating water temperature approaches the set (heating) temperature, so that the hot water temperature approaches the set temperature without using excessive gas consumption. And when the heating water temperature exceeds the set temperature is controlled by the microcomputer 26 to burn to the minimum force value.

By adjusting the combustion state in this way, the hot water temperature can approach the hot water temperature set by the user for the shortest time. In addition, since the hot water temperature set by the user does not exceed much, the consumption of fuel is prevented. As described above, the hot water temperature is controlled until the hot water mode is released.

As described above, according to the present invention, there is an advantage of controlling the hot water temperature to approach the set temperature quickly in the gas boiler having the function of setting the hot water temperature to three heating water temperatures of high, medium and low.

Although the invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that modifications and variations can be made within the spirit and scope of the invention, and such variations or modifications will be within the scope of the appended claims. .

Claims (1)

The microcomputer 26 for controlling the entire stroke, the gas valve 4 controlled to supply the gas of the predetermined amount to the burner 28, the temperature sensing unit 10 for measuring the heating water temperature, and the hot water temperature. In the gas boiler having a room cone 24 having a function of setting high, medium, and low, when the hot water use mode is detected in the microcomputer 26, the hot water temperature set by the user is read and the heating supply water is supplied from the temperature sensing unit 10. Measuring a temperature of the first step; A second step of comparing the measured heating supply water temperature and the set temperature with the microcomputer 26; A third step of controlling in the microcomputer 26 to burn with a maximal force when the comparison result is the heating water temperature (set temperature-10 ° C.); A fourth step of controlling in the microcomputer 26 to burn at a maximum heating power of 3/4 when the heating water temperature (the set temperature is 5 ° C.); And a fifth step of controlling the microcomputer 26 to burn at a maximum power of 1/4 if the heating water temperature ≤ a set temperature and to burn at a minimum force if the heating water temperature exceeds the set temperature. Gas boiler hot water temperature control method.