KR20000043544A - Method for controlling pump of gas boiler - Google Patents

Abstract

PURPOSE: A control method of a pump of a gas boiler is provided to perform prompt heating by lowering temperature to be able to perform heating combustion by rotating a pump at high speed for a certain time after fire extinguish and by rotating water in a hot water generation pipe piped in a boiler. CONSTITUTION: Gas is ignited by opening a gas valve and operating a transformer in a burner. Combustion is performed by a determined temperature and combustion is stopped by cutting off gas if temperature is not an extinguish level. Combustion gas in a heating chamber embedding a burner is discharged by driving a fan. By rotating a pump for a certain time, water circulates inside the heat pipe. The pump is stopped by cutting off power fed to the pump. If hot water is not used, a signal is transmitted to the ignition step if temperature is lowered sufficiently. If the temperature is not lowered sufficiently, a signal is transmitted to the step for stopping the pump. If hot water is used continuously, combustion is performed continuously. If the use of hot water is stopped, the pump is rotated at high speed to circulate water in a heating pipe. The rotation of the pump is maintained for about 2 minutes. If the temperature is a level for ignition, a signal is transmitted to the ignition step. If the temperature is not a level for ignition, a signal is transmitted to the step for stopping the pump.

Description

Pump control method of gas boiler

The present invention relates to a control method of a circulating pump of a gas boiler, and in particular, in case of extinguishing after using hot water, the pump is heated at a high speed for a predetermined time after extinguishing to prevent it from being burned in a heating mode immediately. The present invention relates to a pump control method of a gas boiler that can be performed by rapid heating by rotating the water of a heating water pipe piped to a boiler to lower the temperature at which heating and combustion can be performed.

In general, the domestic gas boiler looks at the structure of the domestic gas boiler, the interior of the gas boiler is piped into a gas pipe, heating supply pipe, heating return pipe, direct water pipe, hot water pipe, the gas pipe for controlling the supply of gas 109 is mounted, a heating unit 102 having a burner (not shown) integrated with the heat exchanger 101 to burn the gas introduced through the gas pipe to obtain heat, and also the combustion operation The fan 103 for smoothing is mounted.

And depending on the model, the water tank 107 may be mounted on the outside, there may be mounted on the inside of the boiler, the boiler is equipped with a water tank 107 inside the water tank (expansion tank) of the 107 The float switch 106 is mounted at the top to induce water replenishment in the water tank 107.

The boiler is equipped with a three-way valve 112 and the circulation pump 111, or a two-way pump 108 at the same time as the valve to control the flow of the heating water flowing to the heat exchanger (101). By forcibly circulating the heating water to obtain the necessary heating or hot water. In addition, the gas boiler is raised to a certain temperature during heating and extinguished, and the pumps 108 and 111 are stopped, and in order to ignite again, the gas boiler senses the heating temperature, and when the proper temperature is detected, the gas is heated again and stopped after using hot water. The pumps 108 and 111 are also stopped.

However, at this time, the temperature of the heating pipe of the boiler is increased by the use of hot water, and when the use of the hot water is again stopped to perform heating, the pumps 108 and 111 are stopped by the sensor 105 which senses the temperature of the heating combustion. Since there is a problem that the heating combustion is not performed immediately because the temperature of the elevated water is sensed, heating is performed after a certain time, that is, the temperature of the elevated water drops to the temperature of the heating combustion.

Therefore, the object of the present invention is to solve the above-mentioned drawbacks, if the fire extinguished after using hot water to increase the temperature to a constant temperature to prevent the combustion cannot be carried out in the heating mode immediately by rotating the pump at high speed for a certain time after the fire extinguishing The present invention provides a method of controlling a pump of a gas boiler that can be rapidly heated by lowering the temperature of a heating water pipe connected to a boiler to a temperature at which heating and combustion can be performed.

Features of the present invention for achieving the above object, the gas valve is opened by the operation of the transformer in the burner to open the gas valve, the ignition step of sending a signal to the heating combustion step; A combustion combustion step of burning at a set temperature and transmitting a signal to a heating digestion temperature determination step; A heating fire extinguishing temperature determination step of determining whether the heating fire extinguishing temperature is reached and sending a signal to the fire extinguishing step when the heating fire extinguishing temperature is reached; An extinguishing step of interrupting combustion by cutting off gas and sending a signal to a post purge step; A post purge step of driving a fan to discharge combustion gas in the burner-embedded heating chamber, rotating the pump for a predetermined time, further circulating the heating water, and sending a signal to the pump stop step; A pump stopping step of stopping the driving of the pump by cutting off the power applied to the pump and transmitting a signal to the hot water use determination step; If it is determined that the hot water is used, the signal is sent to the heating ignition temperature determination step, and if it is determined that the hot water is used, the hot water use determination step of transmitting a signal to the hot water combustion step; A heating ignition temperature determination step of detecting whether the temperature is low enough for heating combustion and sending a signal to the ignition step if it is low enough, and sending a signal to the pump stop step again if it is not low enough; A hot water combustion step of performing combustion in the heating unit of the boiler to supply hot water at a temperature set by the user, and sending a signal to the hot water stop determination step; If it is determined that the use of hot water is not stopped, sending a signal to the hot water combustion step to continue the combustion operation, and if it is determined that hot water is stopped, the hot water stop determination step of sending a signal to the pump rotation step; A pump rotating step of rotating the pump at a high speed to generate circulation of water in the heating pipe, and sending a signal to the set time elapsed determination step; A set time elapsed determination step of maintaining the rotation of the pump for about two minutes and transmitting a signal to the heating ignition temperature determination step; And a heating ignition temperature determination step of transmitting a signal to the ignition stage when the heating ignition temperature is reached and sending a signal to the pump stop step if the heating ignition temperature is not reached. .

1A and 1B are schematic circuit diagrams illustrating an internal piping state of a conventional gas boiler equipped with a general circulation pump and a 2-way pump, respectively.

2 is a block diagram showing essential components for implementing the method of the present invention,

3 is a flow chart for implementing a method for pump control of a gas boiler in accordance with the present invention.

* Explanation of symbols on the main parts of the drawings *

S1 ... ignition stage S2 ... heating combustion stage

S3 ... heating extinguishing temperature judgment stage S4 ... extinguishing stage

S5 ... post purge step S6 ... pump stop step

S7 ... Determination step of using hot water S8 ... Determination step of heating ignition temperature

S9 ... hot water combustion step S10 ... hot water stop determination step

S11 ... Pump rotation stage S12 ... Set time elapsed judgment stage

S13 ... Determination step of heating ignition temperature

In order to implement the method of controlling the pump of the boiler according to the present invention, the control unit (a) which calculates the set values shown in FIG. 2 and controls each operation unit, the combustion unit (b) generating the necessary heat, and the driving unit ( C) and a time detector (D) and a temperature detector (E) must be essentially configured. Referring to FIG. 3, the present invention including such a component is described as follows.

In the first ignition step (S1), the fan is driven, the gas valve is opened to eject the gas to the burner and at the same time the gas is ignited by the operation of the transformer, and sends a signal to the heating combustion step (S2).

In the heating combustion step (S2) by the signal of the ignition step (S1) in the heating mode, the combustion at the temperature set by the user, and sends a signal to the heating fire extinguishing temperature determination step (S3).

In the heating fire extinguishing temperature determination step (S3) by the signal of the heating combustion step (S2), the heating fire temperature is reached by determining whether the heating combustion temperature rises above the temperature set by the user, that is, the heating fire extinguishing temperature. If the signal is sent to the fire extinguishing step (S4), and if the heating fire extinguishing temperature is not reached, the signal is sent to the heating combustion step (S2) to continue heating combustion.

In the fire extinguishing step (S4) by the signal of the heating fire extinguishing temperature determination step (S3), combustion is stopped by closing the gas valve to shut off the gas ejected to the burner, and sends a signal to the post purge step (S5).

In the post purge step S5 according to the signal of the extinguishing step S4, the fan is driven to discharge the combustion gas in the heating chamber in which the burner is built, and the pump is rotated for a predetermined time to further circulate the heating water, and the pump stop step. The signal is sent to S6.

In the pump stop step (S6) by the signal of the post purge step (S5) to stop the drive of the pump by cutting off the power applied to the pump, and sends a signal to the hot water use determination step (S7).

Hot water use determination step (S7) detects whether the flow of water occurs in the flow sensor, if the flow of water is not detected, sends a signal to the heating ignition temperature determination step (S8), if the flow of water is detected hot water combustion step The signal is sent to S9.

In the heating ignition temperature determination step (S8) by the signal of the hot water use determination step (S7) detects whether the temperature is low enough for heating combustion, if the temperature is sufficiently low, send a signal to the ignition step (S1) and ignite again If it is not sufficiently low, the signal is sent to the pump stop step (S6) again.

In the hot water combustion step (S9) according to the signal of the hot water use determination step (S7) to perform the combustion in the heating unit of the boiler to supply hot water of the temperature set by the user, the signal to the hot water stop determination step (S10) Send the.

In the hot water stop determination step (S10) by the signal of the hot water combustion step (S9), if it is determined that the hot water is not stopped by the flow sensor by detecting the flow of water, by sending a signal to the hot water combustion step (S9) If the combustion operation is continued, and it is determined that the use of hot water is stopped, the signal is sent to the pump rotating step S11.

In the pump rotation step (S11) by the signal of the hot water stop determination step (S10) to rotate the pump at a high speed to generate a circulation of water in the heating pipe, and sends a signal to the set time elapsed determination step (S12). At this time, the reason for the water circulation is that when the water having an elevated temperature is stopped in the heating pipe in the boiler due to the use of hot water, heating cannot be performed even if the temperature of each room where the heating pipe is piped is low.

By the signal of the pump rotation step (S11) in the set time elapsed determination step (S12) to maintain the rotation of the pump for about 2 minutes, and sends a signal to the heating ignition temperature determination step (S13). The set time is a time at which water in the heating pipe can sufficiently circulate.

In the heating ignition temperature determination step (S13), when the heating ignition temperature is reached using a temperature sensor, the signal is sent to the ignition step (S1) to perform heating by the signal of the set time elapsed determination step (S12), If the heating ignition temperature is not reached, send a signal to the pump stop step (S6) to check whether the hot water is used again.

As described above, according to the present invention, by rotating the pump at a high speed for a predetermined time after the fire extinguishing effect by reducing the temperature to the temperature capable of performing the heating combustion by rotating the water in the heating water pipes piped to the boiler. There is.

Claims (1)

In gas boilers, An ignition step (S1) of opening the gas valve to ignite the gas by the operation of the transformer in the burner and sending a signal to the heating combustion step (S2); Combustion at a set temperature, and the heating combustion step (S2) for transmitting a signal to the heating fire extinguishing temperature determination step (S3); It is determined whether the heating fire extinguishing temperature is reached, when the heating fire extinguishing temperature is reached, a signal is sent to the fire extinguishing step (S4). Determination step S3; A fire extinguishing step S4 for interrupting combustion by cutting off the gas and sending a signal to the post purge step S5; A post purge step S5 of driving a fan to discharge combustion gas in a burner-embedded heating chamber, rotating the pump for a predetermined time to further circulate the heating water, and sending a signal to the pump stop step S6; A pump stop step (S6) of stopping the driving of the pump by cutting off the power applied to the pump and sending a signal to the hot water use determination step (S7); If it is not determined that the use of hot water sends a signal to the heating ignition temperature determination step (S8), and if it is determined that the use of hot water sends a signal to the hot water combustion step (S9) (S7); The heating ignition temperature which detects whether the temperature is low enough for heating combustion and sends a signal to the ignition step S1 if it is low enough, and sends the signal to the pump stop step S6 again if it is not low enough. Determination step S8; A hot water combustion step (S9) of performing combustion in the heating unit of the boiler to supply hot water at a temperature set by the user, and sending a signal to the hot water stop determination step (S10); If it is determined that the use of hot water is not interrupted, it sends a signal to the hot water combustion step (S9) to continue the combustion action, and if it is determined that the use of hot water is stopped, use the hot water to send a signal to the pump rotation step (S11) Stop determination step (S10); A pump rotating step (S11) of rotating the pump at high speed to generate circulation of water in the heating pipe, and sending a signal to the set time elapsed determination step (S12); A set time lapse determination step S12 of maintaining the rotation of the pump for about two minutes and transmitting a signal to the heating ignition temperature determination step S13; And When the heating ignition temperature is reached, the signal is sent to the ignition step (S1), and if the heating ignition temperature is not reached, the heating ignition temperature determination step (S13) that sends a signal to the pump stop step (S6) includes a Pump control method of gas boiler.