KR100427391B1 - Device for controlling antifreezing operation according to status of operation controller in boiler and method thereof to prevent freezing of boiler by automatically switching to antifreezing non-combustion operation or antifreezing combustion operation - Google Patents

Abstract

PURPOSE: An antifreezing operation controller and a method thereof are provided to prevent the freezing of a boiler by automatically switching to an antifreezing non-combustion operation or an antifreezing combustion operation according to the on/off of an operation controller. CONSTITUTION: A temperature from an external temperature sensor for a certain time and a temperature from an output water temperature sensor in a non-combustion status are detected. An on status of a water level sensor is checked continuously when the temperature from the external temperature sensor is under a certain temperature, the temperature from the output water temperature sensor is below a certain temperature and the temperature from the external temperature sensor is under a certain temperature. A water level error status is maintained when the water level sensor is off. In the on status of the water level sensor, a hot water exclusive mode is checked. In the hot water exclusive mode, a hot water function control is ignored. Otherwise, an antifreezing combustion function is operated. A temperature from the output water temperature sensor is detected during the operation of the antifreezing combustion function. The antifreezing combustion function is stopped and an initial detecting operation is performed again when the temperature from the output water temperature sensor is over the certain temperature. An on status of an operation controller is detected when the detected temperature of the output water temperature sensor is under the certain temperature. In maintaining an off status of the operation controller, the antifreezing combustion function is continued. In turning on the operation controller, the antifreezing combustion function is stopped and switched to a common operation. Thereby, the freezing of a heating system is prevented previously.

Description

Freezing prevention operation control device and method according to the operating condition of the boiler operation device

The present invention relates to a freeze protection operation control apparatus and a method according to the operating state of the operating device of the boiler, in particular, if the freeze protection temperature is detected according to whether the operation control device is "on" or "off", freeze protection non-combustion operation or The present invention relates to an anti-freezing operation control apparatus and a method according to the operating state of the operating device of the boiler to automatically switch to the anti-freezing combustion operation to protect the boiler from freezing under any circumstances.

Most boilers in the related art have only one of a freeze protection non-combustion operation function and a freeze protection combustion operation function. When the freeze protection temperature sensing element detects a freezing temperature, only one of the above operation functions is performed.

Therefore, if the operation control device is "off" or the operation control device is disconnected or short-circuited in a boiler equipped with only the freeze protection non-combustion operation function, the freeze protection non-combustion operation is performed even if the freezing prevention temperature sensing element detects the freezing temperature. There is a problem that it is not performed, and in a boiler equipped with only a freeze-proof combustion operation function, the water flow switch is in the "off" state when the water-only switch is selected when the operation control unit is "on" and the 24-hour mechanical timer is heated for a long time. In the case of the "off" indication, there is a problem that the freeze protection combustion operation is not performed even if the freeze protection temperature sensing element detects the freezing temperature.

An object of the present invention is to freeze the boiler under any circumstances by automatically switching to freeze protection non-combustion operation or freeze protection combustion operation depending on whether the operation control device is on or off when the freeze protection temperature sensing element is detected. It is to provide a freezing prevention operation control device and a method according to the operating state of the operating device of the boiler that can be prevented.

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

1 is a block diagram of the apparatus of the present invention, in the microcomputer 200, the output signal of the tap water temperature sensor 19 installed at the heating water outlet of the heat exchanger and the external temperature sensor installed inside the boiler casing ( A detection temperature recognition unit 21 for receiving the output signals of the inputs 22 through the tapping temperature detector 20 and the external temperature detector 23, respectively, and recognizing them; A temperature detection comparison determination unit 24 which receives the output signal of the detection temperature recognition unit 21 and compares it with a freezing prevention temperature or the like; An operating device state recognizing unit 14 which receives an output signal of the operating manipulating device 100 through the data transmitting / receiving unit 4 and the operating device state determining unit 5 and recognizes a state of the operating operating device; A mode determination recognizing unit 15 which receives an output signal of the operation device state recognizing unit 14 and recognizes an operation mode of the boiler; A water flow recognition unit 8 that receives the output signal of the water flow switch 5 installed in the water pipe through the flow water detection unit 7 and recognizes the state of the water flow; A water level recognition unit 11 which receives the output signal of the water level sensor 9 installed in the water tank through the water level detection unit 10 and recognizes the water level; A timer 13 for receiving the output signal of the oscillator 12 and counting the time required by each unit; Under the control of the timer 13, the output signals of the temperature detection comparison determination unit 24, the mode determination recognition unit 15, the water flow recognition unit 8, and the water level recognition unit 11 are respectively input. An external input determination command unit 25 for determining a state of each unit and generating a predetermined control signal; A combustion operation driver 26 which receives a predetermined signal from the external input determination command unit 25 and performs combustion and operation functions; A mode transition / switch command unit 27 for receiving the output signals from the external input determination command unit 25 and the combustion operation driver 26 to generate transition and transition signals according to the freezing prevention mode and the normal combustion mode; A combustion control unit 28 which is controlled by the timer 13 and receives an output signal of the mode transition / switching command unit 27 and generates a predetermined control signal for each functional component necessary for combustion; A functional part control unit 18 under the control of the timer 13 and receiving the output signals of the mode transition / switch command unit 27 and the combustion control unit 28 to selectively drive respective functional parts; Control signal output for selectively outputting the signals output from the functional component control unit 18 to the burner 37, the circulation pump 31 and the three-sided 33 through the respective component drive unit (36, 30, 32) It is characterized by consisting of a group (29).

At this time, the operation control device 100 is provided with a driving on / off operation unit 3, a heating / hot water selection unit 2 and a 24-hour scheduled heating timer (1).

In addition, the tap water temperature sensor 19 and the external temperature sensor 22 mainly uses a dummyster having a characteristic of changing the resistance value according to temperature, and Th1 performs the freezing prevention temperature detection and burns during non-combustion. During operation, it is operated for detecting the tapping temperature, Th2 is for sensing the outside temperature, and the water level sensor 9 mainly uses a float switch that is turned on / off by buoyancy.

On the other hand, the method of the present invention, as shown in Figure 2, when the power cord is "on" detects whether the operating device 100 is in the "off" state, if the "off" state performs a freeze prevention combustion operation function " If the "on" state is characterized by consisting of the process of performing the freeze protection non-combustion operation function.

In the above-mentioned freezing prevention combustion operation function, the temperature detected by the external temperature sensor 22 for a predetermined time (X seconds) or more is a predetermined temperature (A ° C.) or less and the temperature detected by the tap water temperature sensor 19 during non-combustion. Detecting whether the temperature is less than the predetermined temperature (E ° C.) or the temperature detected by the external temperature sensor 22 is equal to or less than the predetermined temperature (B ° C.); Continuously detecting whether the level sensor 9 is in the " on " state if the above condition is satisfied, and maintaining the level error state in the " off "state; Detecting whether the level sensor 9 is in the "hot" state, and ignoring the hot water function control in the hot water only mode; Operating the freezing prevention combustion function if the hot water exclusive mode is not used; Detecting whether the temperature detected by the tap water temperature sensor 19 during the freezing prevention combustion function operation is equal to or higher than a predetermined temperature (E ° C.), and stopping the freezing prevention combustion function and returning to the initial detection process. ; If the detection temperature of the tap water temperature sensor 19 is less than a predetermined temperature (E ° C.), the operation control apparatus 100 detects whether the state is “on” and maintains the “off” state to keep the freezing prevention combustion function operation. Making a step; When the operation control device 100 is "on" it is characterized in that the step consisting of stopping the freezing prevention combustion operation function and switching to normal operation.

At this time, the freeze-proof combustion function operation, the heating and tapping temperature (Tset) is fixed to a predetermined temperature (F ℃) and the digestion time (T) in a fixed time (Z minutes) while the circulation pump 31 is It is characterized by consisting of a process that rotates continuously.

In addition, when performing the freeze-proof combustion function as described above, the three-way side 33 is fixed to move to the heating side, the combustion "off" indication signal of the 24-hour scheduled heating timer (1) and the "on" of the water flow switch (5) "The signal will activate the heating function while it is ignored.

On the other hand, the freeze protection non-combustion operation function, the step of continuing to detect whether the operation operation device 100 is converted to the idle state while performing the normal operation due to the "on" state; As a result of the above detection, if the boiler enters a rest state, the temperature detected by the external temperature sensor 22 is less than a predetermined temperature (B ° C) for a predetermined time (X seconds) or more, or in the tap water temperature sensor 19 in the rest state. Detecting whether the detected temperature is equal to or lower than a predetermined temperature (A ° C.); if the above condition is satisfied, detecting whether the level sensor 9 is in the " on " state and maintaining the level error state in the " off "Steps; Activating a freeze protection non-combustion function if the level sensor 9 is in the " on "state; As described above, whether the temperature detected by the external temperature sensor 22 is greater than or equal to the predetermined temperature (D ° C.) for a predetermined time (X sec) or more after the operation of the freezing prevention non-combustion function and the temperature detected by the hot water temperature sensor 19 is Detecting whether the temperature is equal to or higher than a predetermined temperature (C ° C.); When the condition is satisfied, characterized in that the step consisting of stopping the refrigeration non-combustion operation and returning to the initial condition detection step.

At this time, the freeze protection non-combustion function operation, while maintaining the rotation state of the circulation pump 31 to move the three-way (33) to the heating side for a predetermined time (Y minutes) to the hot water side for a predetermined time (X seconds) Will be moved.

In the above, the predetermined temperature AF has a size of A <B <C <D <E <F, A is about 2-4 ° C, B is about 5-7 ° C, and C is about 7-9 ° C. And D is about 9-11 ° C., E is about 11-13 ° C. and F is about 43-47 ° C.

Further, the predetermined (constant) time X-Z has a size of X &lt; Y &lt; Z, X is about 25-35 seconds, Y is about 4 minutes-5 minutes, and Z is 10-20 minutes.

As described above, the operation and effect of the present invention are as follows.

First, the main technology of the present invention automatically performs either of the freeze protection combustion operation and the freeze protection non-combustion operation function depending on whether the operating device 100 of the boiler is in an "off" or "on" state. This is to prevent damage to the inner pipe and heating pipe of the boiler due to freezing.

To this end, the operating device state recognition unit 14 in the microcomputer 200 receives an output signal of the operating device 100 input through the data transmission / reception unit 4 and the operating device state determination unit 5 and operates the current operation. Recognizing whether the operation on / off switch 3 in the device 100 is in the " off " state or the " on " state, the mode determination / recognition unit 15 and the external input determination command unit 25 perform mode transition / Since the output to the switching command unit 27 can perform the freeze prevention operation according to the state of the operation control device 100 in the mode transition / switching command unit 27.

That is, as a result determined by the mode transition / switch command unit 27, if the operation control device 100 is in the " off " state, the freezing prevention combustion operation function is performed. It is to perform the operation function.

At this time, when it is determined that the operation operation device 100 is "off" to perform the freezing prevention combustion operation function, first, the tapping temperature detection unit 20 and the external temperature detection unit 23 in the temperature detection comparison unit 24. The outside air temperature is inputted to the detection temperature recognition unit 21 and the output signals of the tap water temperature sensor 19 and the external temperature sensor 22 respectively for a predetermined time (X seconds) or more. And at the same time as the temperature of the tapping is kept below the predetermined temperature (E ° C), or it is continuously detected whether the tapping temperature is below the predetermined temperature (B ° C).

As a result, when any one of the above two conditions is satisfied and a predetermined output signal is generated from the temperature detection comparison determination unit 24, the external input judgment command unit 25 under the control of the timer 13 this time. Receives the output signal from the water level recognition unit 11 and continuously detects whether the water level sensor 9 installed in the water tank is in the "on" state. If the water level sensor 9 is in the "off" state, the water tank It recognizes that there is no water in the water and maintains the water level error.

However, when the state of the water level sensor 9 is detected by the external input determination command unit 25, if it is in the " on " state, it is recognized that the water is sufficiently fresh in the water tank, The output signal is input through the mode determination unit 15 to determine whether the mode is exclusively for hot water.

As a result, the hot water exclusive mode is ignored, and if it is not the hot water exclusive mode, a predetermined control signal is output to the combustion operation driver 26 and the mode transition / switch command unit 27. The burner drive unit 36, the circulation pump drive unit 30, and the three way through the combustion control unit 28, the functional part control unit 18, and the control signal output group 29 controlled by the timer 13 in the command unit 27. The control unit 32 outputs a predetermined control signal according to the freezing prevention combustion function operation.

Therefore, the heating and tapping temperature Tset is fixed at a predetermined temperature (F ° C.) and the extinguishing time T is fixed at a constant time (Z minutes) while the circulation pump 31 continuously rotates to minimize combustion conditions. By preventing the freezing of the heating system is activated by the use of anti-freeze combustion function to minimize the use of fuel, when the freeze-proof combustion function is activated in this way, the three-way side 33 is fixed to move to the heating side, the operation control device The combustion " off " indication signal generated by the 24 hour reserved heating timer 1 of " 100 " and the &quot; on &quot; signal of the water flow switch 5 are enabled by activating the heating function in a neglected state.

The reason for disregarding the "off" instruction of the 24-hour reserved heating timer 1 and the "on" instruction of the water flow switch 6 is that when the freeze-proof combustion operation is stopped due to the "commission" instruction of the scheduled heating, the heating is stopped. Freezing of the system part may occur, and when the three-way valve 33 is fixed in the hot water direction due to the "on" indication of the water flow switch 6, the heating water heated by the freeze-proof combustion operation does not circulate to the heating system part, and thus freezing may occur. It is an operation to solve a problem that may occur.

In addition, the temperature detection comparison determination unit 24 detects the temperature detected by the external temperature sensor 22 through the detection temperature recognition unit 21 even during the operation of the anti-freezing combustion function as described above. If the outside air temperature in the boiler rises above a predetermined temperature (E ° C.), the freezing prevention combustion function is temporarily stopped to return to the initial detection process while suppressing excessive consumption of fuel.

However, if the detection temperature of the external temperature sensor 22 is less than the predetermined temperature (E ° C.), the operation control apparatus 100 rechecks whether it is “on” and maintains the “off” state. If the operation operation apparatus 100 is "on" as a result of the detection, the freezing prevention combustion operation function is stopped and the operation is switched to normal operation.

On the other hand, as a result of detecting the state of the operation control device 100 in the mode transition / switching command unit 27, it is determined that the "on", and converted to the hot water only mode during the normal operation or a 24-hour scheduled heating timer In order to perform the freezing prevention non-combustion operation function because the heating-off instruction is lowered by the idle state, first, the tapping temperature detector 20 and the external temperature detector of the idle state are detected in the temperature detection comparison unit 24. 23, the output temperature of the tap water temperature sensor 19 and the external temperature sensor 22, which are input to the detection temperature recognition unit 21, is input, respectively, and the outside temperature is set to the predetermined temperature (X seconds) or more. It is continuously detected whether the temperature is less than B ° C) or the tapping temperature is lower than the predetermined temperature (A ° C).

As a result, when any one of the two conditions is satisfied and a predetermined output signal is generated from the temperature detection comparison determination unit 24, the water level is determined by the external input determination command unit 25 under the control of the timer 13. The output signal of the recognition unit 11 is input to detect whether the water level sensor 9 installed in the water tank is in the "on" state. Similarly, water level error is maintained.

However, when the external input determination command unit 25 detects the state of the water level sensor 9, if it is in the " on " state, it recognizes that the water is sufficiently fresh in the water tank and shifts the mode to the combustion operation driver 26. As a predetermined control signal is output to the / switch command unit 27, the combustion control unit 28 and the functional part control unit 18 under the control of the timer 13 in the mode transition / switch command unit 27 and The control signal output group 29 outputs a predetermined control signal to the circulation pump driving unit 30 and the three-way driving unit 32 according to the freezing prevention non-combustion function operation.

Therefore, the circulation pump 31 maintains the rotational state and the three-way valve 33 is operated for freezing prevention non-combustion function to move to the heating side for a predetermined time (Y minutes) and to the hot water side for a predetermined time (X seconds). It prevents freezing of the heating system.

In addition, after operating the freeze protection non-combustion function as described above, the temperature detection comparison unit 24 detects each of the tap water temperature sensor 19 and the external temperature sensor 22 through the detection temperature recognition unit 21. The temperature is continuously compared with the predetermined temperature (D ℃, C ℃) and the freezing prevention non-combustion operation is continued when the outside temperature and the tapping temperature are respectively above the predetermined temperature (D ℃, C ℃) for a predetermined time (X seconds). By stopping and returning to the initial condition detection step, it is possible to prevent the heating system from freezing even if the boiler enters the idle state in the “on” state of the operation control device 100.

As described above, according to the present invention, if the freezing prevention operation temperature is detected by the freezing prevention temperature detecting element (that is, the heating water tapping temperature sensor and the outside temperature sensor), the freezing prevention ratio is determined depending on whether the operation control device is on or off. Combustion operation or freeze prevention Since combustion operation is automatically switched and performed, it is possible to prevent the heating system from freezing even if the operation control device is in any state.

1 is a block diagram of an apparatus of the present invention.

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

Explanation of symbols used in the main part of the drawing

1: 24-hour reservation heating timer 2: Heating / hot water selection unit

3: operation on / off control unit 4: data transmission / reception unit

5: operation device state determination unit 6: water flow switch

7: water flow detection unit 8: oscillator

9: water level detector 10: water level detector

11: water level recognition unit 12: oscillator

13: Timer 14: operation unit status recognition unit

15: mode judgment recognition unit 18: functional parts control unit

19: hot water temperature sensor 20: hot water temperature detection unit

21: external temperature detector 22: external temperature detector

23: negative temperature detection unit 24: temperature detection comparison determination unit

25: external input judgment command unit 26: combustion operation driving unit

27: mode transition / conversion command unit 28: combustion control unit

29: control signal output group 31: circulation pump

33: three-way 37: burner

100: operating operation device 200: microcomputer

Claims (7)

The microcomputer 200 outputs the output signal of the tap water temperature sensor 19 installed at the heating water outlet of the heat exchanger and the output signal of the external temperature sensor 22 installed inside the boiler casing, respectively. A detection temperature recognition unit 21 which is input through the detection unit 23 and recognizes them; A temperature detection comparison determination unit 24 which receives the output signal of the detection temperature recognition unit 21 and compares it with a freezing prevention temperature or the like; An operating device state recognizing unit 14 which receives an output signal of the operating manipulating device 100 through the data transmitting / receiving unit 4 and the operating device state determining unit 5 and recognizes a state of the operating operating device; A mode determination recognizing unit 15 which receives an output signal of the operation device state recognizing unit 14 and recognizes an operation mode of the boiler; The planting part 8 which receives the output signal of the water flow switch 5 installed in the water pipe through the water flow detector 7 and recognizes the state of the water flow: and the output signal of the water level sensor 9 installed in the water tank. A water level recognition unit 11 that receives the water level detection unit 10 and recognizes the water level state; A timer 13 for receiving the output signal of the oscillator 12 and counting the time required by each unit; Under the control of the timer 13, the output signals of the temperature detection comparison determination unit 24, the mode determination recognition unit 15, the water flow recognition unit 8, and the water level recognition unit 11 are respectively input. An external input determination command unit 25 for determining a state of each unit and generating a predetermined control signal; A combustion operation driver 26 which receives a predetermined signal from the external input determination command unit 25 and performs combustion and operation functions; A mode transition / switch command unit 27 for receiving the output signals from the external input determination command unit 25 and the combustion operation driver 26 to generate transition and transition signals according to the freezing prevention mode and the normal combustion mode; A combustion control unit 28 which is controlled by the timer 13 and receives an output signal of the mode transition / switching command unit 27 and generates a predetermined control signal for each functional component necessary for combustion; A functional part control unit 18 under the control of the timer 13 and receiving the output signals of the mode transition / switch command unit 27 and the combustion control unit 28 to selectively drive respective functional parts; Control signal output for selectively outputting the signals output from the functional component control unit 18 to the burner 37, the circulation pump 31 and the three-sided 33 through the respective component drive unit (36, 30, 32) Freezing prevention operation control device according to the operating state of the operating device of the boiler, characterized in that consisting of a group (29). When the power cord is "on", the operation control device 100 detects whether the "off" state and if the "off" state to perform the freeze protection combustion operation function, if the "on" state to perform the freeze protection non-combustion operation function Freezing prevention operation control method according to the operating state of the operating device of the boiler, characterized in that consisting of. According to claim 2, wherein the freeze protection combustion operation function, the temperature detected by the external temperature sensor 22 for more than a predetermined time (X seconds) is less than the predetermined temperature (A ℃) and the non-combusted tap water temperature sensor ( Detecting whether the temperature detected at 19) is below a predetermined temperature (E ° C) or whether the temperature detected at the external temperature sensor 22 is below a predetermined temperature (B ° C); Continuously detecting whether the level sensor 9 is in the " on " state if the above condition is satisfied, and maintaining the level error state in the " off "state; Detecting whether the level sensor 9 is in the "hot" state, and ignoring the hot water function control in the hot water only mode; Operating the freezing prevention combustion function if the hot water exclusive mode is not used; Detecting whether the temperature detected by the tap water temperature sensor 19 during the freezing prevention combustion function operation is equal to or higher than a predetermined temperature (E ° C.), and stopping the freezing prevention combustion function and returning to the initial detection process. ; If the detection temperature of the tap water temperature sensor 19 is less than a predetermined temperature (E ° C.), the operation control apparatus 100 detects whether the state is “on” and maintains the “off” state to keep the freezing prevention combustion function operation. Making a step; When the operation control device 100 is "on" freeze prevention operation control method according to the operating state of the operation device of the boiler, characterized in that the step of stopping the freeze protection combustion operation function and switching to normal operation. The method of claim 2, wherein the freeze protection non-combustion operation function comprises the steps of: continuously detecting whether the operation operation device (100) has been switched to a rest state during the normal operation due to the " on "state; As a result of the above detection, if the boiler enters a rest state, the temperature detected by the external temperature sensor 22 is less than a predetermined temperature (B ° C) for a predetermined time (X seconds) or more, or in the tap water temperature sensor 19 in the rest state. Detecting whether the detected temperature is equal to or lower than a predetermined temperature (A ° C.); if the above condition is satisfied, detecting whether the level sensor 9 is in the " on " state and maintaining the level error state in the " off " state. Steps; Activating a freeze protection non-combustion function if the level sensor 9 is in the " on "state; As described above, whether the temperature detected by the external temperature sensor 22 is greater than or equal to the predetermined temperature (D ° C.) for a predetermined time (X sec) or more after the operation of the freezing prevention non-combustion function and the temperature detected by the hot water temperature sensor 19 is Detecting whether the temperature is higher than a predetermined temperature (C ° C.), and stopping the freezing prevention non-combustion operation and returning to the initial condition detection step if the condition is satisfied. Prevention operation control method. The circulating pump according to claim 3, wherein the anti-freezing combustion function is operated by fixing the heating tapping temperature (Tset) to a predetermined temperature (F ° C) and extinguishing time (T) for a predetermined time (Z minutes). 31 is a freezing prevention operation control method according to the operating state of the operating device of the boiler, characterized in that the process consisting of a continuous rotation. The method of claim 3, wherein when performing the freeze protection combustion function, the three-way valve 33 moves to the heating side, and the combustion " off " indication signal of the 24-hour reserved heating timer 1 and the water flow switch 5 Freezing prevention operation control method according to the operating state of the operating device of the boiler, characterized in that the heating function is operated in a state that the "on" signal is ignored. 5. The method of claim 4, wherein the freeze protection non-combustion function maintains the rotation state of the circulation pump 31 and moves the three-way valve 33 to the heating side for a predetermined time (Y minutes) and then the predetermined time (X seconds). During the freezing prevention operation control method according to the operating state of the operating device of the boiler, characterized in that for moving to the hot water side.

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