KR100291488B1 - Emergency operation of gas boiler - Google Patents

Abstract

According to the present invention, when the user cannot perform normal combustion operation due to an abnormality in the system of the remote controller or the gas boiler, the system performs a minimum emergency operation with only the components in the currently operable system to receive the service. A method of providing heating and hot water by preventing the off.

Conventional gas boilers have been operated in an error mode of a system until they are serviced when a malfunction of the system occurs, for example, a disconnection between the remote controller and the main body. Therefore, if the gas boiler system is treated as an error in the cold winter, there is a problem that the heating of the user's home is impossible due to the inoperability of the system.

Emergency operation method of the gas boiler according to the present invention, the user recognizes that there is an error in the system of the gas boiler operating the emergency operation switch, judging the necessity of emergency operation by the self-diagnosis of the microcomputer, if after the determination If emergency operation is not necessary, perform normal operation, and if it is determined that it is necessary, set heating temperature and hot water temperature to a predetermined target temperature (Teset), and self-diagnosing the components of the gas boiler system using a response signal. Determining whether there is a problem in the remaining components except the thermistor among the components of the diagnosed gas boiler, if there is a problem, performing the error mode and flashing the emergency operation lamp alternately from red to green to indicate that emergency operation is impossible. , If there is no abnormality in the judgment, the heating supply water temperature is mounted on the supply water side Normal combustion by controlling the temperature difference (ΔT) of supply water and return according to the set target temperature (Teset) by detecting the temperature measured from thermistor 1 for detecting the degree and thermistor 2 for detecting the heating return temperature Performing an operation, integrating time for performing the emergency operation for a predetermined time (X), and stopping the emergency operation and turning off the system when the accumulated time becomes more than the predetermined time (X). Characterized in that it comprises a step.

Description

Emergency operation of gas boiler

The present invention relates to a method of emergency operation of a gas boiler, and more particularly, the user has only a component in the system that is currently operable when the user cannot perform normal combustion operation due to an error in the remote control or the gas boiler system itself. The present invention relates to a method of providing heating and hot water by preventing the system from turning off for a time until receiving a service by performing an emergency operation.

In general, a conventional gas boiler is performed in an error mode of a system until a service is received when a malfunction of the system occurs, for example, a disconnection between the remote controller and the main body. Therefore, if the gas boiler system is treated as an error in the cold winter, there is a problem that the heating of the user's home is impossible due to the inoperability of the system.

In addition, the conventional gas boiler system has only one thermistor for detecting the water temperature of the heating and hot water to operate by mounting only one thermistor on the heating supply side, there is a problem that the heating is not possible due to the error of the system when the thermistor is broken.

The present invention has been made to solve the problems of the prior art operating as described above, the main object of the present invention is a system in the case of a disconnection of the remote control and the main body or one of the two thermistors used in the gas boiler system failure The present invention provides a method for enabling emergency operation of heating and hot water for a predetermined time by performing an emergency operation of the system for a predetermined time without being driven in an error mode of.

1 is a block diagram showing the entire system of a gas boiler applied to the present invention.

2 (a), (b) and 2 (c) are flowcharts for explaining emergency operation of the gas boiler according to the preferred embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

Thermistor 1: TH1 Thermistor 2: TH2

The emergency operation method of the gas boiler of the present invention recognizes that the user has an abnormality in the remote control, and after operating the emergency operation switch to determine the necessity of the emergency operation by the self-diagnosis of the microcomputer after the normal operation if the emergency operation is not necessary, If it is determined that it is necessary, the heating temperature and the hot water temperature are set to a predetermined target temperature (Teset). After the self-diagnosis of the components of the system by using the response signal, it is determined whether there is an error in the diagnosed components. If there is a problem, the system is operated in error mode, and the emergency operation lamp flashes alternately from red to green. The temperature difference between the supply water and the return water according to the set target temperature Teset by detecting the temperature measured from the thermistor 1 mounted to detect the heating supply water temperature and the thermistor 2 mounted on the return side to detect the heating return temperature. Perform normal combustion by control. In addition, it is preferable that the time is accumulated so that the emergency operation can be performed for a predetermined time, and when the accumulated time becomes more than the predetermined time (X), the emergency operation is preferably stopped and the system is turned off.

The setting of the predetermined temperature may include detecting an operation signal jumping from a low level to a high level according to the operation of the emergency operation switch, and if the operation signal is detected, the emergency operation lamp blinks green. Determining that there is an abnormality in the remote control by the self-diagnosis of the microcomputer to control the; and determining the abnormality of the thermistor 1 by using a response signal, and if there is no abnormality determines the abnormality of the thermistor 2 When the thermistor 1 has an error, performing an emergency operation using the thermistor 2, and if there is an error in the thermistor 2, the method further comprises performing an emergency operation using the thermistor 1.

The emergency operation by using thermistor 2 when the thermistor 1 has an error may include displaying the abnormal state as a red blinking of the emergency operation lamp, and a predetermined return control target temperature Tfset in the thermistor 2 in advance. ), The self-diagnosis of components of the system through the response signal, and if there is a problem with the components of the system, it performs in error mode, and the emergency operation lamp flashes red and green alternately and then performs emergency operation. Stopping, and if there is no abnormality, performing the return temperature control combustion by the return control target temperature Tfset, and accumulating time for the operation by the return control target temperature Tfset for a predetermined time Y. Determining whether the emergency operation time by the return control target temperature has reached a predetermined time (Y), and when the predetermined time reaches the return control target Exit combustion control according to Figure (Tfset) and constitutes the further step of Red on the emergency lamp operation.

In addition, when there is an error in the thermistor 2, the step of performing emergency operation using the thermistor 1 includes displaying the emergency operation lamp as a red flashing, and predetermined supply water control target temperature Tgset to the thermistor 1 in advance. Setting the step, self-diagnosing the components of the system through the response signal, and if there is an error in the components of the system, perform the error mode, and the emergency operation lamp flashes red and green alternately and then performs the emergency operation. Stopping, and if there is no abnormality, performing the feed water temperature control combustion by the feed water control target temperature Tgset, and the time required to operate the feed water control target temperature Tgset for a predetermined time. And determining whether the emergency operation time by the supply water control target temperature has reached a predetermined time (Z), and when the predetermined time is reached, supply water The control target temperature Tgset is further configured to end the control combustion and to turn on the emergency operation lamp red.

The set temperature becomes a target temperature (Teset)> supply water control target temperature (Tgset)> return control target temperature (Tfset) for controlling the temperature difference (ΔT) of the supply water and the return water, and the predetermined temperature for performing the emergency operation. The time is configured to be an emergency operation execution time (X seconds)> return water temperature control execution time (Y seconds)> supply water temperature control execution time (Z seconds) for controlling the temperature difference (ΔT) between the feed water and the return water.

The step of terminating the emergency operation may include terminating the normal combustion of the temperature difference during the emergency operation time (X) for controlling the temperature difference (ΔT) of the predetermined supply water and the return water, and if the level is detected to be down, the emergency operation may be performed. Turning on the lamp green, turning off the emergency operation switch after the user recognizes that the emergency operation is finished by looking at the green light, and according to the off operation of the emergency operation switch, the operation signal is lowered from the high level to the low level. And detecting the off, and turning off the emergency driving lamp and terminating it.

The emergency operation lamp is composed of a bi-directional lamp, and is displayed as flashing, lighting and turning off, and is represented by alternating red, green, and respective colors, so as to inform the user of the state of the system for emergency operation.

The invention can be variously modified and can take various forms and only the specific examples thereof are described in the following detailed description of the invention. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the following description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood that.

Referring to the operation of the present invention configured as described above are as follows.

1 shows a gas boiler 1 to which the control method of the present invention is applied, which is installed in a casing 2 of the gas boiler 1 to combust a gas to heat hot water for heating or hot water supply. ), A water tank 20 for storing heating circulation water, and a secondary heat exchanger 30 having different paths for circulation of hot water and cold water.

At this time, a burner group 12 including a plurality of burners is formed in the casing 11 of the combustor 10, and a primary heat exchanger 14 is installed in the upper direction thereof to prevent overheating and the water passing therethrough. The burner group 12 is heated, and a blower 13 for supplying combustion air is installed at the bottom of the combustor casing 11, and the burner group 12 is provided near the burner group 12. A spark rod plug 15 for ignition and a frame rod 16 for detecting ignition of the burner group are installed, and an exhaust portion 18 for discharging exhaust gas is provided on the upper surface of the combustor casing 11. It is formed through the casing 2 of 1).

In addition, a gas pipe 50 for supplying gas is installed below the burner group 12, wherein two electron valves 51 and 52 for passing the gas at the time of energization and a proportional valve for adjusting the gas supply amount are provided. 53 is provided upstream of the gas pipe 50 with respect to the gas supply path.

In addition, the water tank 20 has a high water level detection sensor 21 for detecting the quantity of water in the water tank, an overflow pipe 22 for discharging excess water, and a low water level detection for detecting whether water is empty in the pipeline. The sensor 32, the heating return pipe 24 in which the water separator 23 is installed, and the water supply pipe 25 for supplying water to the primary heat exchanger 14 by recovering the heating water rotated on the floor. A circulation pump 26 for adjusting the circulation of water is installed downward.

On the other hand, the secondary heat exchanger (30) discharges the water through the tap water, thermistor 1 (TH1) for detecting the direct heating tapping side temperature of the hot water supplied to the user and thermistor 2 (TH2) for detecting the heating return side temperature The hot water discharge tube 31 is attached, the cold water from the outside of the gas boiler flows into the water flow switch 33 for detecting the presence or absence of water flow and a certain amount of water according to the direct water temperature to obtain a stable temperature characteristics The direct inflow pipe 34 and the water supply pipe 25 having a mechanical automatic quantity control device are connected to the heating hot water supply pipe 37 through which water for heating passes through the three-way valve 36.

In addition, between the heating return pipe 24 and the direct water inlet pipe 34 is provided with a tap water supply side 35 for replenishing water when the water tank 20 is insufficient, clogging of the heating filter, heating distributor The bypass pipe 38 is installed to prevent the pressure from rising inside the gas boiler 1 and to circulate the flow of water by making an internal closed circuit of the gas boiler 1 when the heating pipe is blocked. The low temperature sensing thermistor TH3 is formed in the casing 2 of the gas boiler 1.

2 (a), (b) and 2 (c) show a flow chart for explaining the emergency operation method of the gas boiler of the present invention.

First, the user recognizes that the gas boiler does not operate even though the user operates the remote controller, and operates the emergency operation switch to perform heating in the home for a time that can be received after applying for the service (S10). Then, after detecting that the operation signal jumps from the low level to the high level according to the operation of the emergency operation switch (S12), the emergency operation lamp flashes green to inform the user that the system is performing emergency operation (S14).

In a preferred embodiment of the present invention, the emergency operation lamp in the present invention can be implemented as a two-way lamp, it can be displayed as flashing, lit and turned off, represented by alternating red and green and each color respectively for emergency operation The status of the system can be informed to the user in a variety of ways.

When the emergency operation switch is turned on, the microcomputer receives the emergency operation signal and checks where there is an error through the self-diagnosis. At this time, it is determined whether the remote controller is abnormal by the self-diagnosis operation of the microcomputer controlling the system (S16). Then, it is determined whether or not thermistor 1 is abnormal by using a response signal (S22). If there is no error, it is determined whether or not thermistor 2 is abnormal (S24). If there is an error in thermistor 1, emergency operation is performed using thermistor 2. If the thermistor 2 has an error, emergency operation is performed using the thermistor 1.

If there is no abnormality in the remote control after checking the system (S18), the normal operation lamp is turned off (S20). If the thermistor 1 and thermistor 2 have no abnormality and only the remote controller has an abnormality, the heating temperature and the hot water temperature are set to a predetermined target temperature Teset set in advance (S26). Then, the components of each system are self-diagnosed using the response signal (S28). If there is an error in the components other than the diagnosed thermistor (S30), if there is an error, the emergency operation is impossible, the error mode is performed, and the emergency operation lamp flashes alternately from red to green, and the emergency operation ends.

In addition, if there is no problem in components other than thermistor, it detects the temperature measured from thermistor 1 (TH1) mounted on the supply water side to detect the heating water supply temperature and thermistor 2 (TH2) mounted on the return side to detect the heating return temperature. By performing the normal combustion by controlling the temperature difference (ΔT) of the supply water and the return water according to the set target temperature (Teset) (S36). At this time, the temperature is calculated by subtracting the temperature of thermistor 2 (TH2) from the temperature of thermistor 1 (TH1) and controlling the amount of combustion according to the value.

In order for emergency operation using the temperature difference from these two thermistors TH1 and TH2 to be performed for a predetermined time input in advance (Count) (S38), the accumulated time is more than a predetermined time (X). In this case (S40), normal combustion by the temperature difference (ΔT) control of the predetermined supply water and return water is terminated (S42), and the emergency operation lamp is turned on green (S44). In response to the green light, the user recognizes that the emergency operation is finished and turns off the emergency operation switch (S46), and detects that the operation signal falls from the high level to the low level according to the off operation of the emergency operation switch (S48). ) And turn off the emergency operation lamp (S50).

Figure 2 (c) shows the emergency operation performed when the thermistor 1 is broken. Referring to FIG. 2 (b), the abnormal state of the thermistor 1 is displayed as red blinking of the emergency operation lamp (S52), and then the predetermined return control target temperature Tfset previously inputted to the thermistor 2 is shown. To set (S54). Then, the self-diagnostic component other than the thermistor of the system through the response signal (S56).

If there is an error in the components except the thermistor of the system (S58), it is performed in error mode (S60) and the emergency operation lamp flashes red and green alternately (S62) to inform the user that emergency operation is impossible and then perform emergency operation. If there is no abnormality, the return temperature combustion control by the return control target temperature Tfset is performed (S64).

In order to perform the operation by the return control target temperature Tfset for a predetermined time Y input to the microcomputer in advance (Count) (S66), the emergency operation time by the return control target temperature is predetermined. After determining whether the time (Y) has reached (S68), when a predetermined time is reached, the combustion control according to the return control target temperature (Tfset) is terminated (S70) and the emergency operation lamp is turned on in red to notify the user that the emergency operation is completed ( S72).

Figure 2 (b) shows the emergency operation method performed when there is a problem in thermistor 2. Referring to FIG. 2 (b), when there is an error in thermistor 2, emergency operation using the thermistor 1 displays the emergency operation lamp as flashing red (S74), and then supplies a predetermined input to the thermistor 1 in advance. The water control target temperature Tgset is set (S76). Then, other components except the thermistor of the system through the response signal to self-diagnose (S78).

If there is an error in other components of the system (S80) to perform in error mode (S82) flashing the emergency operation lamp red and green alternately (S84) to inform the user that emergency operation is impossible and then stop emergency operation. If there is no abnormality, the feed water temperature combustion control by the feed water control target temperature Tgset is performed (S86).

In addition, in order to operate by the supply water control target temperature Tgset for a predetermined time Z previously input to the microcomputer, the time is accumulated (S88) and the emergency operation time is a predetermined time Z. When the predetermined time is determined (S90), the supply water control target temperature (Tgset) combustion control is terminated (S92) and the emergency operation lamp is turned on red to notify the user that the emergency operation is completed (94).

Thermistor 1 and thermistor 2 have an error setting in order of the target temperature Teset for controlling the temperature difference ΔT of the feed water and the return water among the set temperatures in the order of the feed water control target temperature Tgset and the return water control target temperature Tfset. The temperature is determined in order of maintaining the highest hot water and heating temperature when not in use, and then controlling by the measuring temperature of the heating water supply and the measuring temperature of the heating return water.

In addition, the predetermined time is set to the emergency operation execution time for controlling the temperature difference (ΔT) of the feed water and the return water (X seconds)> the return water temperature control execution time (Y seconds)> the supply water temperature control execution time (Z seconds) If thermistor 1 (TH1) and thermistor 2 (TH2) can be used for the longest time, but if any one of the thermistors is abnormal, the execution time is shortened for the safety of the system.

In the present invention operating as described above, the effects obtained by the representative ones of the disclosed inventions will be briefly described as follows.

If there is an error in the gas boiler, if the user perceives an abnormal operation state, the system can provide heating and hot water of the house until the service is received by performing minimal emergency operation without putting the system into an error state.

In addition, by using two thermistors in the system, even if one of the thermistors fails, the other one can be used for emergency operation for a predetermined time.

In addition, it is obvious that it is a very advantageous invention that the user can recognize and cope with the situation by displaying the emergency driving situation using the two-way lamp, respectively.

Claims (9)

An emergency operation method of a gas boiler, the method comprising: a first step of a user recognizing an abnormality in a gas boiler system and operating an emergency operation switch; A second step of judging the necessity of emergency driving by self-diagnosis of the microcomputer; If it is determined that emergency operation is not necessary after the determination, a third step of setting a heating temperature and a hot water temperature to a predetermined target temperature Teset if determined to be necessary; A fourth step of self-diagnosing the components of the gas boiler system using the response signal; The fifth component for determining that there is an error in the components other than the thermistor among the diagnosed gas boilers in case of an error and performing an error mode and flashing the emergency operation lamp alternately from red to green to indicate that emergency operation is impossible. step; If there is no abnormality in the determination, the temperature measured from the thermistor 1 mounted on the supply water side to detect the heating supply water temperature and the thermistor 2 mounted on the return side to detect the heating return temperature are sensed to the set target temperature Teset. According to the sixth step of performing normal combustion by controlling the temperature difference ΔT between the feed water and the return water; A seventh step of accumulating time so that the emergency operation can be performed for a predetermined time (X); And an eighth step of stopping the emergency operation and turning off the system when the accumulated time exceeds the predetermined time (X). The method of claim 1, wherein the second step comprises: detecting that an operation signal jumps from a low level to a high level according to an operation of the emergency operation switch; Flashing the green emergency driving lamp when the operation signal is detected; Determining that there is an abnormality in the remote control by the self-diagnosis of the microcomputer controlling the system; Determining whether the thermistor 1 is abnormal using a response signal; If there is no error, determine whether there is an error of thermistor 2, and if there is an error in thermistor 1, performing emergency operation using thermistor 2; The emergency operation method of the gas boiler, characterized in that further comprising the step of performing an emergency operation using the thermistor 1 if there is an error in the thermistor 2. The method of claim 2, wherein the emergency operation using the thermistor 2 when the thermistor 1 has an error comprises: displaying the abnormal state as a red blink of the emergency operation lamp; Setting a predetermined return control target temperature Tfset in the thermistor 2; Self-diagnosing components of the system other than thermistors through the response signals; If there is a problem with the components of the system, it executes in error mode and the emergency operation lamp flashes red and green alternately to inform the user that emergency operation is impossible, and then stops emergency operation. Performing a return temperature controlled combustion by; Integrating time for operation by the return control target temperature (Tfset) for a predetermined time (Y); Determining whether the emergency operation time by the return control target temperature has reached a predetermined time (Y); Ending the control combustion according to the return control target temperature (Tfset) when a predetermined time, the emergency operation method of the gas boiler further comprising the step of turning on the emergency operation lamp red. The method of claim 2, wherein the emergency operation using the thermistor 1 when the thermistor 2 has an error comprises: displaying the emergency operation lamp as a red flashing light; Setting a predetermined supply water control target temperature (Tgset) to the thermistor 1 in advance; Self-diagnosing components of the system other than thermistors through the response signals; If there is an error in the components of the system, it is executed in error mode and the emergency operation lamp flashes red and green alternately to inform the user that emergency operation is impossible, and then stops emergency operation. Performing combustion of the feed water temperature control system according to the present invention; Integrating time for operation by the supply water control target temperature (Tgset) for a predetermined time (Z); Determining whether the emergency operation time by the supply water control target temperature has reached a predetermined time (Z); And a step of ending the supply water control target temperature (Tgset) control combustion when the predetermined time is reached and turning on the emergency operation lamp red. The target temperature (Teset)> supply water control target temperature (Tgset)> return control target temperature (Tfset) for controlling the temperature difference (ΔT) of the supply water and the return water. Emergency operation method of the gas boiler, characterized in that the. The method according to any one of claims 1 to 4, wherein the predetermined time is the emergency operation execution time (X seconds) for controlling the temperature difference (ΔT) between the feed water and the return water> the return water temperature control execution time (Y seconds)> supply water Emergency operation method of the gas boiler, characterized in that the temperature control execution time (Z seconds). The method of claim 1, wherein the eighth step comprises: integrating time for performing temperature difference (ΔT) control of the feed water and the return water during a predetermined emergency operation time (X); Determining whether the emergency operation time by controlling the temperature difference ΔT between the feed water and the return water has reached a predetermined time (X); Terminating control of the temperature difference [Delta] T between the supply water and the return water when a predetermined time comes; Illuminating the emergency driving lamp to notify the user that the emergency operation is finished; Recognizing that the emergency operation is finished, turning off the emergency operation switch; Detecting an operation signal falling from a high level to a low level according to an off operation of the emergency operation switch; When the level down detection for the operation signal, the emergency operation method of the gas boiler further comprises the step of turning off the emergency operation lamp and terminated. The emergency operation method of any one of claims 1 to 4, wherein the emergency operation lamp is a bidirectional lamp. The method of claim 8, wherein the two-way lamp is flashing, lit and turned off, and the red and green and the alternating colors, respectively, to indicate to the user the status of the system for emergency operation, the emergency operation method of the gas boiler .