KR101393406B1 - Automatic control method of boiler using outdoor air temperature sensor - Google Patents

Abstract

The present invention relates to a method of automatically controlling a boiler using an outside temperature sensor, and more particularly, to a method of controlling a boiler using an outside temperature sensor, comprising the steps of: determining whether an automatic function switch installed in a room control is turned on by a user's operation; If the automatic function switch is turned "on ", firstly detecting a stagnated outside air temperature for a predetermined period of time through the outside air temperature sensor; Driving a blowing fan; A second step of detecting an outside air temperature which is forcibly supplied for a predetermined period of time through an outside air temperature sensor; Driving the blowing fan to determine whether the second detected outside air temperature is lower than a reference temperature; Determining whether the difference between the first and second detected outside air temperatures is less than a predetermined value if the second detected outside air temperature is lower than the reference temperature; Determining that the difference between the first and second detected outside air temperatures is less than a predetermined value as a result of the determination and applying a predetermined table value inputted to the controller; If the difference between the second detected outside air temperature is equal to or higher than the reference temperature or the difference between the first and second detected outside air temperatures is equal to or greater than a predetermined value while driving the blowing fan in the above, it is determined to be the outside air temperature range of the FF system, And applying a table value.
As described above, in the present invention, if the supply air temperature at the time of operating the blowing fan is in the range of the reference temperature or more, which does not require great precision for the heating control, the control temperature region of the FF system, If the supply air temperature at the time of starting the blowing fan is in the range below the reference temperature requiring great accuracy for the heating control, the difference in the outside air temperature before and after the blowing fan is operated. If the temperature difference is large, If the temperature difference is not large, the control temperature range of the FE system is applied and the automatic temperature sensor installed on the air supply side is operated according to the installation conditions of the boiler so that the automatic function of the boiler itself can be performed, Can be greatly improved.

Description

[0001] The present invention relates to an automatic control method of a boiler using an outdoor temperature sensor,

The present invention relates to a method of automatically controlling a boiler using an outside air temperature sensor, and more particularly, to a method of controlling an outside temperature range of a control temperature region The present invention can smoothly perform the AUTO function operation even under different installation conditions of the boiler such as the FF system and the FE system in which the temperature difference of the supply unit occurs.

Generally, a boiler is used to heat water by using combustion heat and heat generated by burning it using fuel, coal or gas as fuel, or supplying electricity to a heater, and supplying hot 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 is used for supplying hot water through a water pipe or the like.

When the heating mode is operated in the normal 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 and transferred to a heating load (i.e., heating pipe) Heating is done.

In the above, the respective rooms constituting the heating load are provided with respective valves for controlling whether or not the heating water is supplied to the respective rooms, and the amount of opening and closing is controlled by a user or by a separate controller, It is possible to selectively heat the room only.

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 heated water heated in the main heat exchanger to the hot water heat exchanger side, Heat exchange can be performed between the water and the hot water can be supplied to the user.

The boiler having such a construction is installed with the capacity of the boiler being determined according to the appropriate level of the place where the heating is required. That is, if there are several rooms requiring heating, the capacity of the boiler is determined so that the heating can be supplied based on the entire room.

In general, the heating control system of the boiler controls the amount of heat corresponding to the heating set temperature set by the consumer at the time of burning, and when the actual heating water tank temperature measured by the thermistor or the like is higher than the user's heating set temperature, When the temperature reaches a high cut temperature (for example, a set temperature + 5 ° C) or reaches a second high cut temperature (for example, 88-90 ° C), which is an absolute temperature for preventing the boiling point from reaching, When the actual heating water temperature of the hot water tank measured by a thermistor or the like reaches the first reheater temperature (a temperature lower than a predetermined temperature) during the extinguishing process as described above, the control for repeating the operation for repeating the combustion is performed have.

On the other hand, when the automatic function is selected in the conventional boiler having the automatic function, the blowing fan of the boiler is operated to read the temperature of the outside air temperature sensor installed in the air supply unit, and the heating set temperature and the hot water set temperature , The function of automatically controlling the heating combustion and the extinguishing time to increase the convenience of consumers.

The temperature range read by the FF method in which the air outside the building is burnt according to the installation conditions of the boiler having such an automatic function and the outdoor temperature sensor installed in the FE-based supply unit which is burnt with the air inside the building, It is impossible to control the automatic function and the freeze prevention operation in the same manner. Therefore, it is necessary to set the control temperature region in consideration of the above installation conditions.

That is, in a boiler that performs an automatic function and an anti-freeze function using an outside temperature sensor installed in a conventional supply unit, the temperature difference between the inside of the boiler room and the outside air is large in winter, It is a reality that control of different temperature range is necessary compared with boiler.

1. Korean Registered Patent No. 10-0621665 (August 31, 2006) 2. Korean Registered Patent No. 10-0767183 (October 08, 2007) 3. Korean Patent Publication No. 1995-0006658 (April 27, 1994)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the related art, and it is an object of the present invention to provide an air conditioner in which, when a supply air temperature for operating a blowing fan is in a range of a reference temperature or higher, If the supply air temperature at the time of operating the blowing fan is in a region below the reference temperature which requires a high accuracy for the heating control, the difference in the outside air temperature before and after the blowing fan is operated is compared with the temperature If the difference is large, the control temperature range of the FF system is applied. If the temperature difference is not large, the control temperature range of the FE system can be applied to perform smooth automatic function by using the outside temperature sensor installed on the supply side according to the installation conditions of the boiler The present invention provides an automatic control method of a boiler using an outside temperature sensor.

According to an aspect of the present invention, there is provided a method of controlling a remote control system, the method comprising: determining whether an automatic function switch installed in a room controller is turned " on " If the automatic function switch is turned "on ", firstly detecting a stagnated outside air temperature for a predetermined period of time through the outside air temperature sensor; Driving a blowing fan; A second step of detecting an outside air temperature which is forcibly supplied for a predetermined period of time through an outside air temperature sensor; Driving the blowing fan to determine whether the second detected outside air temperature is lower than a reference temperature; Determining whether the difference between the first and second detected outside air temperatures is less than a predetermined value if the second detected outside air temperature is lower than the reference temperature; Determining that the difference between the first and second detected outside air temperatures is less than a predetermined value as a result of the determination and applying a predetermined table value inputted to the controller; If the difference between the second detected outside air temperature is equal to or higher than the reference temperature or the difference between the first and second detected outside air temperatures is equal to or greater than a predetermined value while driving the blowing fan in the above, it is determined to be the outside air temperature range of the FF system, And applying a table value.

In addition, it is determined that the outdoor temperature region is the FE or FF mode and the predetermined table value input to the controller is applied. Then, the indoor temperature is detected through the room temperature sensor installed in the room controller. The heating control unit sets the heating set temperature, the hot water set temperature, the heating burn time and the heating fire duration, which are set in correspondence with the indoor temperature value detected through the FE system or FF system, The method comprising the steps of:

At this time, the predetermined time for detecting the first and second outside air temperatures is one minute or less.

It is also preferable that the reference temperature is set to any one of 18 to 22 ° C and the predetermined value to be compared with the difference between the first and second detected outside air temperatures is set to any one of ± 8 to ± 10 .

When the automatic function switch is turned " off "by the user during the execution of the above steps, the process returns to the step of stopping the function of the corresponding step and determining whether the first automatic function switch is turned" on ".

As described above, according to the present invention, if the supply air temperature at the time of operating the blowing fan is in the range of the reference temperature or more, which does not require great accuracy for the heating control, If the supply air temperature when operating the blower fan is in the range below the reference temperature that requires great accuracy for the heating control, compare the difference in the outside air temperature before and after the blower fan is operated. If the temperature difference is large, If the temperature difference is not large, the control temperature range of the FE system is applied. By using the outside temperature sensor installed on the air supply side according to the installation condition of the boiler, smooth automatic function can be performed, It is a very useful invention that the reliability according to the driving can be greatly improved.

1 is a schematic block diagram of a boiler to which the method of the present invention is applied;
2 is a flow chart for explaining the method of the present invention.
FIG. 3 is a graph showing the temperature difference between the supply air temperature of the FF system and the supply air temperature of the FE system.
4 is a table showing an example of table application according to the outside air temperature range of the FF system and the FE system.

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 to which the method of the present invention is applied. FIG. 2 is a flow chart for explaining the method of the present invention. FIG. 4 is a table showing an example of table application according to the outside air temperature range of the FF system and the FE system.

According to the present invention,

A step (S1) of judging whether the automatic function switch 31 provided in the room controller 3 is turned on by the user's operation in the control unit 1;

When the automatic function switch 31 is turned on, a step (S2) of detecting a stagnant state of the outside air temperature for a predetermined time (t) through the outside air temperature sensor 2;

(S3) driving the blowing fan (42) in the combustion section (4);

(S4) a secondarily detecting an outside air temperature which is forcibly supplied during a predetermined time (t) through the outside temperature sensor (2);

(S5) of driving the blowing fan (42) and determining whether the second detected outside air temperature is lower than a reference temperature (Tref);

A step (S6) of judging whether the difference between the first and second detected outside air temperatures is below a predetermined value when the second detected outside air temperature is lower than the reference temperature Tref;

(S7) determining that the difference between the first and second detected outdoor air temperatures is less than the predetermined value and determining the outdoor air temperature range of the FE system and applying the predetermined table value input to the controller;

If the outside air temperature detected secondarily by driving the blowing fan 42 is equal to or higher than the reference temperature Tref (No at S5) or the difference between the first and second detected outside air temperatures is equal to or higher than the predetermined value (No at S6) (S8) judging that the outdoor temperature region is the FF method, and applying a predetermined table value inputted to the control unit.

(S7) (S8), the room temperature sensor 32 (32) provided in the room controller (3) determines whether the room temperature is outside the temperature range of the FE system or the FF system (S9) of detecting an indoor temperature through the indoor unit;

The heating set temperature, the hot water set temperature, the heating burn time and the heating fire time set corresponding to the indoor temperature value detected through the FE or FF system outside air temperature and the room temperature detected by the above-mentioned room temperature and the room temperature 3 are set as predetermined table values, (S10) of automatically controlling the unit (4).

In this case, the predetermined time (t) for detecting the first and second outside air temperatures is within 1 minute.

The reference temperature Tref is set to any one of 18 to 22 ° C, and a predetermined value to be compared with the difference between the first and second detected outside air temperatures is set to any one of ± 8 to ± 10 .

When the automatic function switch is turned " off "by the user during the execution of the above steps S2-S10, the process returns to the step of stopping the function of the corresponding step and judging whether or not the first automatic function switch is turned & .

Here, a description 5 is an outside air temperature control region judging unit, 6 is an outside temperature first and second detection timings, 7 is a circulating pump, 8 is a heating temperature sensor, and 9 is a frame load.

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

First, the method of the present invention is implemented in a boiler, in which the automatic function switch 31 installed in the room con- dens 3 is turned on by the user's operation in the control unit 1, which performs overall control functions according to the heating and hot water modes, When the automatic function switch 31 is turned on, the air conditioner 1 is kept in a stagnant state for a predetermined time (for example, one minute) via the outside air temperature sensor 2 provided on the air supply side or the like (I.e., the temperature of the boiler room) of the boiler room (step S2).

The control unit 1 then drives the blowing fan 42 in the combustion unit 4 and drives the blowing fan 42 by the blowing fan 42 for a predetermined time t through the outside air temperature sensor 2 The outside air temperature which is forcibly supplied is detected secondarily (S4).

Next, the control unit 1 drives the blowing fan 42 as described above, and the outside air temperature detected secondarily is converted into the reference temperature Tref (for example, any one of 18 to 22 ° C (S5). If the second detected outside air temperature is less than the reference temperature Tref, the difference between the first and second detected outside air temperatures is set to a predetermined value (e.g., ± 8 to ± 10 (S6). ≪ tb > < TABLE >

If it is determined that the difference between the outdoor air temperatures detected over the first and second orders is less than the predetermined value, if the difference is less than the predetermined value, it is determined that the outdoor air temperature range is the FE system as shown in the table of FIG. 4, The table value is applied (S7).

However, if the outside air temperature detected secondarily by driving the blowing fan 42 is equal to or higher than the reference temperature Tref (No at S5) or the difference between the first and second detected outside air temperatures is equal to or greater than the predetermined value No), it is judged to be the outside air temperature region of the FF system as shown in the table of Fig. 4, and the predetermined table value inputted to the control unit is applied (S8).

Then, the control unit 1 determines that the outdoor temperature region is the FE system or the FF system as described above, and applies the predetermined table value input to the control unit (S7) (S8) (S9) through the installed room temperature sensor 32 and, as shown in the table of Fig. 4, the indoor temperature detected by the FE system or FF system and the room temperature detected through the room controller 3 The heating set temperature, the hot water set temperature, the heating burn time, and the heating fire duration are set to predetermined table values, respectively, and the combustion unit 4 is automatically controlled in accordance with the set values.

FIG. 4 is a table showing an example of table application according to the outside air temperature range of the FF system and the FE system. Referring to FIG. 4, for example, when the outside air temperature detected secondarily by driving the blowing fan 42 is the reference temperature Tref (For example, any one of 18 to 22 ° C) and the difference between the first and second detected outside air temperatures is less than a predetermined value (for example, between ± 8 and ± 10), the outside air temperature range is, for example, 11 To 15 deg. C and the room temperature detected through the room temperature sensor 32 installed in the room con- dens 3 is, for example, between 5 and 20 deg. C, it is recognized that the exhaust system of the boiler is the FF system, Is automatically set to 65 ° C, the hot water set temperature is automatically set to 48 ° C, the heating combustion time is automatically set to 25 minutes, the heating and extinguishing time is automatically set to 5 minutes, 4) is automatically controlled.

Of course, if the difference in the outside air temperature between the first and second detected temperatures is less than the reference temperature Tref (for example, any one of 18 to 22 ° C) and the outside air temperature detected secondarily by driving the blowing fan 42 as described above For example, 11 to 15 占 폚 while the outside air temperature range is less than a predetermined value (for example, any value within the range of 占 8 to 占 10), and is detected through the room temperature sensor 32 installed in the room- When the temperature is in the range of 25 to 40 ° C, for example, it is recognized that the exhaust method of the boiler is the FF system as described above. The heating set temperature is automatically set to 45 ° C, the hot water set temperature is automatically set to 38 ° C, The combustion time is automatically set to 5 minutes, and the combustion unit 4 is automatically controlled in response to the automatic function program with the heating and extinguishing time being automatically set to 25 minutes.

On the other hand, when the outside air temperature detected secondarily by driving the blowing fan 42 is equal to or higher than the reference temperature Tref (for example, 18 to 22 ° C) or the difference between the first and second detected outside air temperatures is a predetermined value The room temperature detected through the room temperature sensor 32 installed in the room con- troller 3 is set to the room temperature (for example, the room temperature is within the range of ± 8 to ± 10) For example, if it is between 5 and 20 ° C, it is recognized that the exhaust system of the boiler is the FE system. The heating set temperature is automatically set to 65 ° C, the hot water set temperature is automatically set to 48 ° C, And the combustion unit 4 is automatically controlled in response to the automatic function program in a state in which the heating and extinguishing time is automatically set to 5 minutes.

If the outside air temperature detected secondarily by driving the blowing fan 42 is equal to or higher than the reference temperature Tref (for example, any one of 18 to 22 占 폚) or the outside air temperature detected first and secondarily Is detected through the room temperature sensor 32 provided in the room controller 3 while the difference in the outside air temperature range is, for example, between 19 and 20 ° C at a predetermined value (for example, a value of ± 8 to ± 10) The heating set temperature is automatically set to 45 deg. C, and the hot water set temperature is automatically set to 38 deg. C, for example, when the room temperature is between 25 and 40 deg. , The heating combustion time is automatically set to 5 minutes, and the combustion unit 4 is automatically controlled in accordance with the automatic function program with the heating and extinguishing time being automatically set to 25 minutes.

On the other hand, when the user turns off the automatic function switch 31 during the execution of each of the steps S2-S10, the function of the corresponding step is automatically stopped and the first automatic function switch 31 is turned on And returns to step S1 to determine whether or not it is.

As described above, in the present invention, if the supply air temperature at the time of operating the blowing fan 42 is in the region below the reference temperature Tref requiring a high accuracy for the heating control, the difference in the outside air temperature before and after the blowing fan 42 is operated is compared If the temperature difference is large, the control temperature range of the FF system is applied. If the temperature difference is not large, the control temperature range of the FE system is applied. By using the outside temperature sensor 2 installed on the air supply side according to the installation conditions of the boiler, Function of the boiler itself can greatly improve the reliability of the boiler itself in terms of its merchantability and automatic function operation.

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.

1:
2: Outside temperature sensor
3: Roommon
31: Automatic function switch 32: Room temperature sensor
4: Combustion part
41: blower fan driving part 42: blower fan
5: Outside temperature control area judging unit
6: Outdoor temperature first and second detection timer
7: circulation pump
8: Heating temperature sensor
9: Frame load

Claims (5)

Determining whether the automatic function switch installed in the room controller is "on"
If the automatic function switch is turned "on ", firstly detecting a stagnated outside air temperature for a predetermined period of time through the outside air temperature sensor;
Driving a blowing fan;
A second step of detecting an outside air temperature which is forcibly supplied for a predetermined period of time through an outside air temperature sensor;
Driving the blowing fan to determine whether the second detected outside air temperature is lower than a reference temperature;
Determining whether the difference between the first and second detected outside air temperatures is less than a predetermined value if the second detected outside air temperature is lower than the reference temperature;
Determining that the difference between the first and second detected outside air temperatures is less than a predetermined value as a result of the determination and applying a predetermined table value inputted to the controller;
If the difference between the second detected outside air temperature is equal to or higher than the reference temperature or the difference between the first and second detected outside air temperatures is equal to or greater than a predetermined value while driving the blowing fan in the above, it is determined to be the outside air temperature range of the FF system, And applying the table value to the automatic control of the boiler using the outdoor temperature sensor.
The method according to claim 1,
FE mode or FF mode, and the predetermined table value inputted to the control unit is applied. Then, the indoor temperature is detected through the room temperature sensor installed in the room controller.
The heating control unit sets the heating set temperature, the hot water set temperature, the heating burn time and the heating fire duration, which are set in correspondence with the indoor temperature value detected through the FE system or FF system, The method according to any one of claims 1 to 3, further comprising the steps of:
The method according to claim 1,
Wherein the predetermined time for detecting the first and second outside air temperatures is within one minute.
The method according to claim 1,
Wherein the reference temperature is set to any one of 18 to 22 ° C and a predetermined value to be compared with the difference between the first and second detected outside air temperatures is set to any value between ± 8 and ± 10 Automatic control method of boiler using outside temperature sensor. The method according to any one of claims 1 to 3,
Wherein when the automatic function switch is turned " off "by the user during the execution of each of the steps, the function returns to the step of stopping the function of the corresponding step and judging whether the first automatic function switch is turned" on " Automatic control method of boiler used.

Images