KR101582083B1 - Safe control method for the boiler thermostat switch failure - Google Patents

Abstract

The present invention relates to a safe control method for thermostat switch failure in a boiler, including: determining ″on″ state of a function button switch for boiler operation installed at a control unit at a predefined time interval (t1) at the control unit in microcomputer of thermostat in a switch standby mode; starting counting of ″on″ time of the boiler operation-related function button switch by a timer for determining failure of the operation-related switch when the boiler operation-related function button switch is at ″on″ state; determining ″on″ state of the boiler operation-related function button switch continuously during the operation of counting by the timer for determining failure of the operation-related switch; determining whether the counted time by the timer for determining failure of the operation-related switch is greater than a predefined time (t2) when ″on″ state of the boiler operation-related function button switch is continued; and deciding the corresponding operation-related function button switch is in failure state if the counted time by the timer for determining failure of the operation-related switch is greater than the predefined time (t2). The invention prevents fuel consumption waste due to undesired operation of the boiler and also accidents such as burning from unintended operation, and increases marketability and credibility as a safe boiler.

Description

Technical Field [0001] The present invention relates to a boiler thermostat,

The present invention relates to a safety control method for a switch-on failure of a boiler temperature regulator, and more particularly, to a safety control method of a boiler temperature regulator which is connected to a boiler body through wired / wireless communication, It is judged that the switch is turned on and the operation of the boiler can be stopped by the input of the other function button switch that operates normally so that the boiler can not be operated in accordance with the intention of the consumer It is possible to prevent it from being operated, and it is also invented so as not to suffer damage due to the burn.

Generally, a boiler uses hot oil, coal, and gas as fuels and burns it, or uses heat and heat generated by supplying electricity to a heater to supply water to various heating facilities In the case of a domestic boiler, hot water is supplied to the piping installed on the floor of the room or the like, and the hot water is supplied to the hot water through a water pipe.

When the heating mode is operated in the heating / hot water boiler, the circulation pump is operated to transfer the heating water, and the heating water is heated in the main heat exchanger to be supplied to the heating load (i.e., heating pipe) Heating is carried out.

In addition, the supply of the hot water blocks the path from the three-way valve to the heating load side and opens the path to the hot water heat exchanger side to transfer the heated water heated in the main heat exchanger to the hot water heat exchanger side, Heat exchange can be performed between the heating water and the hot water to be supplied to the user.

In recent years, the controller and the temperature controller for controlling the boiler have been made into a microcomputer (MICOM), so that the control technology has been supplemented to make it more stable and convenient.

Especially, as the temperature controller is designed as a microcomputer, the circuit is simplified and the size is reduced, and various functions are designed, so that the boiler can be used conveniently and safely as desired by the consumer.

Such a temperature controller is largely composed of an operation unit and a display unit. In this case, the operation unit mainly uses a function button switch related to the operation of the boiler such as an adjustment volume for changing the set value and a function button switch for selecting the function. As the state is input to the microcomputer, the function is immediately selected according to the input value or the set value is changed to start or stop the boiler.

Therefore, in the case where the processing of the value inputted by the operation unit is mistaken, it may directly damage to the consumer. Therefore, in order to prevent the boiler from malfunctioning or unnecessary driving or stopping due to noise, mistakes of the consumer, The boiler is operated only when the same input value is continuously read for a predetermined time without immediately processing.

However, although such a processing method can prevent a momentary malfunction, there is a problem in that it is impossible to perform the pure function in the case where an operation portion such as a control volume or a function button switch is broken.

On the other hand, the control volume of the thermostat or the function button switch is frequently used, so that it is likely to fail. Particularly, the failure of the function button switch can be divided into a continuous short circuit and a continuous short circuit.

In the case of the continuous disconnection, the function can not be selected even if the user presses the function button switch, so that the user can immediately perform the processing such as A / S. However, in the case of the continuous short circuit, The function is selected automatically and the boiler is operated or stopped arbitrarily.

If this happens, the consumer will have to spend a lot of time figuring out that there is something wrong with the boiler.

For example, if the "stop" function is broken or broken even though the consumer has selected the "heating" function, the boiler will automatically operate with the "stop" function selected over time.

In this case, the consumer will be able to grasp that the boiler and the thermostat have occurred abnormally only after experiencing the time when the floor is cold.

On the other hand, if the "heating" function is broken or broken even though the consumer has selected the "stop" function, the boiler will automatically operate the "heating" function after a certain amount of time, It takes time.

Of course, even if this happens, if the consumer is indoors, he / she can take actions such as calling an A / S driver. However, if the boiler automatically performs a "heating" Consumers will be affected by the power consumption.

That is, the temperature controller installed in the conventional boiler could not stop the operation of the boiler due to the will of the consumer when the operation-related function button switch during the boiler operation had an "On" failure (that is, a short-circuited failure).

Therefore, when the boiler is operated at the set temperature of high temperature, the operation of the function button switch (for example: heating related function button switch or hot water related function button switch, etc.) There is a problem that the consumer can not end the operation of the boiler arbitrarily, and therefore can suffer damage such as burns.

Korean Patent Publication No. 10-2005-0015036 (February 21, 2005)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a temperature controller connected to a boiler body through wired / wireless communication or directly installed in a boiler body, It is determined that the switch is turned "on" and the operation of the boiler can be stopped by the input of other function button switches that are operated normally. Thus, an image that can be generated due to the operation of the boiler The present invention is directed to a safety control method for a boiler temperature regulator which can prevent the damage of the boiler itself and prevent the damage of the boiler itself.

According to an aspect of the present invention, there is provided a method for controlling a boiler, the method comprising: an operation unit including an operation switch and a function button switch; a temperature controller connected to the boiler body via a wired or wireless connection; And a boiler main body having a microcomputer and controlling the operation of a load related to combustion / operation in response to a demand of the temperature regulator. In the safety control method for a switch-on failure in a temperature controller of a boiler, The microcomputer internal control unit of the temperature controller determines whether the boiler operation related function button switch provided on the operation unit is in an "on" state at a predetermined time interval t1; When the boiler operation-related function button switch is in the "on" state, starting to count the "on" time of the operation related function button switch through the operation-related switch failure judgment timer; Determining whether the boiler operation related function button switch is in the "on" state continuously during the count operation of the operation-related switch failure judgment timer; Determining whether the time counted by the operation-related switch failure determination timer is greater than a predetermined time (t2) if the boiler operation-related function button switch is in the "on" state; And determining that the operation-related function button switch is in a fault state if the "on" time of the corresponding operation-related function button switch counted by the operation-related switch failure judgment timer is greater than the predetermined time t2 do.

If the "on" time of the corresponding operation-related function button switch counted by the operation-related switch failure judgment timer is less than the predetermined time (t2) as a result of the microcomputer control unit of the temperature regulator, Returning to the previous step of determining whether the boiler operation related function button switch is "on" continuously during counting of the timer.

Also, after the "on" time of the corresponding operation-related function button switch counted by the operation-related switch failure judgment timer is greater than the predetermined time (t2), it is determined that the corresponding operation- The microcomputer internal control unit of the temperature controller continuously judges whether the key signal is inputted from the other switch; Determining whether the current heating mode of the boiler is "on" if a key signal is input from another switch; Transmitting a heating mode "off" signal to the boiler body side when the heating mode is "on "; Then, as in the case where the heating mode is already "off ", it is continuously judged whether all the switches are in the" off " And a step of returning to the step.

At this time, in the microcomputer control unit of the temperature controller, the predetermined time t1 interval for determining whether the boiler operation related function button switch provided on the operating unit is in the ON state is 10 to 20 ms, The predetermined time t2, which is compared with the "on" time of the function button switch counted by the boiler operation related function, is 10 to 15 seconds.

As described above, according to the safety control method for the switch-on failure of the boiler temperature controller according to the present invention, any one of function button switches among the function button switches related to the operation of the boiler in the temperature controller connected or directly connected to the boiler body via wired / If the switch is operated for a predetermined time continuously for a predetermined period of time, it is determined that the switch is "on", and the operation of the boiler is stopped by the input of other function button switches that operate normally. Thus, unnecessary fuel It is possible to prevent wastage and economic loss as well as to prevent damage such as burns that may occur due to the operation of the boiler not conforming to the intention of the consumer so as to secure the safety of the boiler itself, Product performance Very useful inventions, etc. that can significantly improve the road.

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

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

FIG. 1 is a schematic block diagram of a boiler and a temperature controller to which the method of the present invention is applied, and FIG. 2 is a flowchart illustrating the method of the present invention.

According to the present invention,

An operation unit 11 provided with an operation switch 111 and function button switches 112 and a temperature controller 10 having a display unit 12 and a micom 13 and connected to the boiler body 20 in a wired or wireless manner, ; And a boiler body (20) having a micom (21) and controlling the driving of the combustion / operation related load (30) in response to the demand of the temperature controller (10) In constructing the control method,

The control unit 133 of the microcomputer 13 of the temperature controller 10 in the switch input standby state sets the boiler operation related function button switch 112 provided in the operating unit 11 to the ON state at a predetermined time interval t1 "(S1) < / RTI >

(S2) of counting the "on" time of the operation related function button switch through the operation-related switch failure judgment timer 131 when the boiler operation-related function button switch 112 is in the "on" state;

A step (S3) of determining whether the boiler operation related function button switch 112 is in the "on" state continuously during the count operation of the operation-related switch failure judgment timer 131;

(S4) determining whether the time counted by the operation-related switch failure determination timer (131) is greater than a predetermined time (t2) if the boiler operation related function button switch is in the "on" state;

If the "on" time of the corresponding operation-related function button switch 112 counted by the operation-related switch failure judgment timer 131 is greater than the predetermined time t2, the corresponding operation-related function button switch 112 is in a failure state (S5). ≪ / RTI >

At this time, as a result of the determination by the controller 133 in the microcomputer 13 of the temperature controller 10,

If the "ON" time of the corresponding operation-related function button switch 112 counted by the operation-related switch failure judgment timer 131 is smaller than the predetermined time t2, the count of the operation-related switch failure judgment timer 131 The operation returns to the previous step S3 in which it is determined whether the boiler operation related function button switch 112 is in the "on" state continuously during operation.

Also, since the "on" time of the corresponding operation-related function button switch 112 counted by the operation-related switch failure judgment timer 131 is larger than the predetermined time t2, the corresponding operation-related function button switch 112 (S5), the controller (133) of the microcomputer (13) of the temperature controller (10) continues to determine whether a key signal is inputted from another switch (S6);

A step (S7) of judging whether the current heating mode of the boiler is "on" when a key signal is inputted from another switch;

(S8) a heating mode "off" signal to the boiler body 20 side if the heating mode is "on ";

Subsequently, as in the case where the heating mode is already in the "OFF" state (No in S7), it is continuously judged whether all the switches are in the "OFF" state (S9) (S1) in the same manner as when the " off "state (No in S1 and S3).

At this time, the control unit 133 of the microcomputer 13 of the temperature controller 10 sets the predetermined time t1 for determining whether the boiler operation related function button switch 112 provided on the operation unit 11 is in the " The interval is 10 to 20 ms,

The predetermined time t2, which is compared with the "on" time of the boiler operation related function button switch 112 counted by the operation-related switch failure judgment timer 131, is 10 to 15 seconds.

Reference numeral 132 denotes an input unit that receives a key signal output from the operation unit 11 and transmits the key signal to the control unit 133. Reference numeral 134 denotes a communication unit for wired or wireless communication with the boiler body 20. Reference numeral 211 denotes a boiler body 20 is a control unit that is provided in the microcomputer 21 and controls driving of the combustion / operation-related load 30, and 212 is a communication unit for wired or wireless communication with the temperature controller 10. [

The operation and effect of the method of the present invention having the above steps will be described as follows.

First, the boiler to which the method of the present invention is applied includes an operation unit 11 having an operation switch 111 and function button switches 112 and a display unit 12, and includes an operation-related switch failure determination timer 131 and an input unit 132 ) Corresponding to the request of the temperature controller 10 including the communication unit 212 as well as the temperature controller 10 having the microcomputer 13 having the control unit 133 and the communication unit 134, And a boiler main body 20 provided with a microcomputer 21 provided with a control unit 211 for controlling the driving of the associated load 30.

The control unit 133 of the microcomputer 13 of the temperature controller 10 of the boiler having the above-described structure controls the operation unit (not shown) at a predetermined time t1 (for example, 10 to 20 ms) (S1) whether the boiler operation-related function button switch 112 provided in the boiler operation-related control unit 11 is in the "on" state.

As a result of the determination by the control unit 133 in the microcomputer 13 of the temperature controller 10, the boiler operation related function button switch 112 provided in the operation unit 11 of the temperature controller 10 is turned on Quot; on "time of the operation related function button switch through the operation-related switch failure judgment timer 131 provided in the microcomputer 13 (S2).

In this way, the controller 133 in the microcomputer 13 of the temperature controller 10 continuously counts the "on" time of the operation related function button switch through the operation-related switch failure judgment timer 131, It is determined whether the function button switch 112 is in the "on" state (S3).

As a result of the determination, if the "on" state of the function button switch related to the boiler operation is continued, the "on" duration time of the corresponding boiler operation related function button switch counted by the operation- Is greater than a predetermined time t2 (for example, 10 to 15 seconds) (S4).

The control unit 133 of the microcomputer 13 of the temperature controller 10 determines whether the corresponding operation button switch 112 counted by the operation-related switch failure judgment timer 131 is on (No in S4), it is determined whether or not the boiler operation related function button switch 112 is in the "on" state continuously during count operation of the operation-related switch failure determination timer 131 The process returns to step S3 to repeat the steps thereafter.

Also, as described above, the control unit 133 of the microcomputer 13 of the temperature controller 10 determines whether or not the "on" duration time of the corresponding boiler operation related function button switch counted by the operation- On time of the corresponding operation-related function button switch 112 counted by the operation-related-switch-failure judgment timer 131 is determined to be equal to or greater than a predetermined time t2 (for example, 10 to 15 seconds) If it is greater than the time t2, it is determined that the corresponding operation-related function button switch 112 is in a fault state and the operation is determined (S5).

On the other hand, since the "on" time of the operation related function button switch 112 counted by the operation-related switch failure judgment timer 131 is larger than the predetermined time t2, the corresponding operation-related function button switch 112 The control unit 133 of the microcomputer 13 of the temperature controller 10 which has determined that it is in a fault state inputs a key signal from any other switch other than the operation related function button switch 112 (S6).

As a result of checking the other switch states other than the operation related function button switch 112, if the key signal is inputted from any other switch, it is determined whether the heating mode of the boiler is currently on (S7) .

As a result of the determination of the heating mode by the controller 133 in the microcomputer 13 of the temperature controller 10, if the heating mode is "on ", the heating mode" Thereby forcing the heating mode of the boiler operating in the current heating mode to be "off".

Accordingly, it is possible to prevent unnecessary waste of fuel and economic loss due to the operation of the boiler not corresponding to the intention of the consumer, and also to prevent the damage such as burns that may occur due to the operation of the boiler in the heating mode, The safety of the boiler itself can be secured and the reliability of the boiler itself in terms of merchandise and operation can be greatly improved.

The control unit 133 of the microcomputer 13 of the temperature controller 10 determines whether the heating mode is already in the "off" state (No in S7) (S8), and then continuously determines whether all the switches are in the "off" state (S9). The heating mode "off"

As a result of continually judging whether all the switches are in the "off" state, it is recognized that the operation related function button switch 112 is not in the " As in the case where the switch 112 is in the "off" state (No in S1 and S3), the process returns to the initial step S1 so as to receive the signals of the switches again.

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

10: Thermostat
11:
111: Operation switch 112: Function button switch
12:
13: Microcomputer
131: Operation-related switch fault diagnosis timer
132: input unit 133:
134:
20: boiler body
21: Microcomputer
211: control unit 212:
30: Load related to combustion / operation

Claims (5)

An operation unit having an operation switch and a function button switch, a temperature controller having a display unit and a microcomputer and connected to the boiler body through a wired or wireless connection; And a boiler body provided with a microcomputer and controlling the operation of a load related to the combustion / operation in response to a demand of the temperature controller. In the safety control method for a switch-on failure in a temperature controller of a boiler,
Determining whether the boiler operation-related function button switch provided on the operating unit is in an ON state at a predetermined time interval (t1) in the microcomputer control unit of the temperature controller in a switch input wait state;
When the boiler operation-related function button switch is in the "on" state, starting to count the "on" time of the operation related function button switch through the operation-related switch failure judgment timer;
Determining whether the boiler operation related function button switch is in the "on" state continuously during counting of the failure judgment timer;
Determining whether the time counted by the operation-related switch failure determination timer is greater than a predetermined time (t2) if the boiler operation-related function button switch is in the "on"state;
Determining that the corresponding operation-related function button switch is in a fault state if the "on" time of the corresponding operation-related function button switch counted by the operation-related switch failure judgment timer is greater than a predetermined time t2;
After determining that the corresponding operation-related function button switch is in a fault state, continuing to determine whether a key signal is input from other switches in the microcomputer control unit of the temperature regulator;
Determining whether the current heating mode of the boiler is "on" if a key signal is input from another switch;
And generating a heating mode "off" signal to the boiler body side when the heating mode is "on ".
The method according to claim 1,
If the " on "time of the operation related function button switch counted by the operation-related switch failure judgment timer is less than the predetermined time t2 as a result of the microcomputer control unit of the temperature controller,
And returning to a previous step of determining whether the boiler operation related function button switch is in the "on" state continuously during the counting operation of the failure judgment timer.
delete The method according to claim 1,
In the microcomputer control section of the temperature regulator which generates the heating mode "off" signal on the boiler body side,
As in the case where the heating mode is already in the "off" state, it is continuously judged whether all the switches are "off" Wherein the step of returning to the boiler temperature regulator is further performed.
The method according to claim 1,
In the microcomputer control unit of the temperature controller, the predetermined time t1 interval for determining whether the boiler operation related function button switch provided on the operation unit is in the ON state is 10 to 20 ms,
And the predetermined time (t2) compared with the "on" time of the boiler operation related button switch counted by the operation-related switch failure judgment timer is 10 to 15 seconds. .

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