US20100096467A1 - Method for controlling heating apparatus - Google Patents

Method for controlling heating apparatus Download PDF

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Publication number
US20100096467A1
US20100096467A1 US12/531,060 US53106008A US2010096467A1 US 20100096467 A1 US20100096467 A1 US 20100096467A1 US 53106008 A US53106008 A US 53106008A US 2010096467 A1 US2010096467 A1 US 2010096467A1
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United States
Prior art keywords
temperature
heating
room temperature
heating apparatus
user
Prior art date
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Abandoned
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US12/531,060
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English (en)
Inventor
Si-hwan Kim
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Kyungdong One Corp
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Kyungdong Network Co Ltd
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Publication date
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Assigned to KYUNGDONG NETWORK CO., LTD. reassignment KYUNGDONG NETWORK CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, SI-HWAN
Publication of US20100096467A1 publication Critical patent/US20100096467A1/en
Assigned to KYUNGDONG ONE CORPORATION reassignment KYUNGDONG ONE CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). Assignors: KYUNGDONG NETWORK CO., LTD.
Abandoned legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller

Definitions

  • the present invention relates to a method of controlling a heating apparatus, and more particularly, to a method of controlling a heating apparatus that is capable of minimizing a difference between a room temperature set by a user and a room temperature measured when the heating apparatus operates.
  • a heating apparatus means an apparatus that supplies hot water to a heating device.
  • the heating apparatus burns fuel, such as gas, in the heating apparatus, heats water using heat of combustion generated by the burning, and circulates the heated water through piping that is laid in floors of rooms to heat the rooms or supplies hot water using the heated water.
  • a control method that allows a heating apparatus to maintain a room temperature at a temperature set by a user, there are the following methods: a method that measures a room temperature and turns on/off the heating apparatus; a method that measures a temperature of heated water and turns on/off a heating apparatus; and a method that operates a heating apparatus during a period of time set by a user and stops the operation of the heating apparatus during a predetermined period of time.
  • the control method that measures the room temperature and turns on/off the heating apparatus is a control method that compares a room temperature measured by a temperature sensor attached to a room temperature controller and a room temperature set by a user and then correspondingly turns on/off a heating apparatus.
  • the process of controlling the heating apparatus using the control method is shown in FIG. 1 .
  • FIG. 1 is a graph illustrating a variation process of a room temperature according to a method of controlling a heating apparatus according to the related art.
  • a user sets a desired room temperature using a room temperature controller that is installed indoor.
  • the set room temperature becomes T — set
  • a heating-off temperature T — off and a heating-on temperature T — on are respectively set to have predetermined upper and lower temperature ranges on the basis of the room temperature T — set set by the user.
  • the heating-off temperature T — off and the heating-on temperature T — on are values that are input to the room temperature controller in advance.
  • the heating-off temperature T — off may be set to 26° C. and the heating-on temperature T — on may be set to 24° C. such that upper and lower temperature ranges are maintained within 1° C. on the basis of the room temperature of 25° C.
  • the room temperature increases. At this time, the room temperature is detected by a temperature sensor that is installed in the room temperature controller. If the room temperature detected by the temperature sensor reaches a temperature of 26° C. that is the heating-off temperature T — off , it is determined that the temperature reaches the room temperature set by the user, and the operation of the heating apparatus is stopped.
  • the heating apparatus stops its operation to decrease the room temperature and the room temperature reaches the heating-on temperature of 24° C., the heating apparatus operates again.
  • the heating apparatus since the heating apparatus operates, heat is transferred to heating piping that is laid in the floors of the rooms, but a predetermined amount of time is needed until the temperature at the floors of the rooms increases to the room temperature set by the user.
  • the room temperature decreases to a temperature (for example, 23° C.) that is lower than the heating-on temperature T — on and then increases again.
  • this is called undershoot.
  • the present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a method of controlling a heating apparatus that is capable of automatically controlling a heating-off temperature T — off and a heating-on temperature T — on according to an operation environment of the heating apparatus such that upper and lower variations of a room temperature set by a user are reduced on the basis of the room temperature, thereby allowing the user to feel comfortable.
  • a temperature when the heating apparatus is operated to increase the room temperature and the operation of the heating apparatus is stopped is set as a temperature that is obtained by subtracting a heating-off temperature at a cycle immediately before a current cycle by a compensation value determined according to overshoot that has occurred at the cycle immediately before the current cycle
  • a temperature when the operation of the heating apparatus is stopped to decrease the room temperature and the heating apparatus is operated is set as a temperature that is obtained by adding the heating-on temperature at the cycle immediately before the current cycle and a compensation value determined according to undershoot that has occurred at the cycle immediately before the current cycle, such that a difference between the measured room temperature and the room temperature set by the user is minimized.
  • a minimum heating-off temperature is set as a temperature that is a predetermined temperature higher than the room temperature set by the user
  • a maximum heating-on temperature is set as a temperature that is a predetermined temperature lower than the room temperature set by the user.
  • a control operation may be performed to reduce the amount of heat produced by the heating apparatus.
  • a control operation it is preferable that a control operation be performed to reduce the amount of heat produced by the heating apparatus in proportion to the amount of overshoot.
  • the method of controlling a heating apparatus it is possible to automatically control a heating-off temperature and a heating-on temperature according to an operation environment of the heating apparatus such that upper and lower variations of a room temperature are reduced, thereby providing a comfortable indoor environment for a user who uses the heating apparatus.
  • FIG. 1 is a graph illustrating a variation process of a room temperature according to a method of controlling a heating apparatus according to the related art.
  • FIG. 2 is a graph illustrating a variation process of a room temperature when a heating apparatus operates according to a method of controlling a heating apparatus according to an embodiment of the present invention.
  • FIG. 3 is a flowchart illustrating a method of controlling a heating apparatus according to an embodiment of the present invention.
  • FIG. 4 is a graph illustrating a control method that reduces the amount of heat according to an embodiment of the present invention.
  • FIG. 5 is a graph illustrating a variation of a room temperature according to a method of controlling a heating apparatus according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram illustrating an example of a heating system to which a method of controlling a heating apparatus according to an embodiment of the present invention is applied.
  • FIG. 2 is a graph illustrating a variation process of a room temperature when a heating apparatus operates according to a method of controlling a heating apparatus according to an embodiment of the present invention.
  • FIG. 3 is a flowchart illustrating a method of controlling a heating apparatus according to an embodiment of the present invention.
  • the present invention relates to implementing a method of controlling a heating apparatus that, when the heating apparatus is turned on/off according to a compared result that is obtained by comparing a room temperature measured by a temperature sensor installed in a room temperature controller and a room temperature set by a user, enables heating to be maintained such that there is a minimal temperature difference on the basis of the room temperature set by the user.
  • a user sets a desired room temperature using a room temperature controller installed indoor (S 101 ).
  • the set room temperature is represented as T — set in FIG. 2 , and may become, for example, 25° C.
  • a first heating-off temperature T — off1 and a first heating-on temperature T — on1 are respectively set to have predetermined upper and lower temperature ranges on the basis of the room temperature T — set (S 103 ).
  • the first heating-off temperature T — off1 may become 25.5° C.
  • the first heating-on temperature T — on1 may become 24.5° C.
  • the room temperature increases.
  • the heating apparatus continuously operates until the room temperature reaches the first heating-off temperature T — off1 (S 105 ).
  • the temperature sensor measures a maximum temperature T — max1 of the room temperature that increases due to overshoot, and a control unit computes a difference between the maximum temperature T — max1 and the first heating-off temperature T — off1 , that is, the amount of overshoot, and defines a computed value as A 1 .
  • a compensation value is determined according to the overshoot that has occurred at the first cycle, and a heating-off temperature T — off2 at a next cycle is determined using the determined compensation value.
  • the compensation value that is determined according to the overshoot that has occurred at the first cycle is defined as (A 1 /2), and a value that is obtained by subtracting the first heating-off temperature T — off1 by the compensation value is defined as a heating-off temperature at a next cycle.
  • a compensation value may be defined as having various values, such as (A 1 /2) or (A 1 /3).
  • the room temperature decreases. If the operation of the heating apparatus is stopped, the room temperature decreases. If the room temperature reaches the first heating-on temperature T — on1 (S 111 ), the heating apparatus operates again (S 113 ).
  • the room temperature does not immediately increase due to specific heat of indoor air but becomes lower than the first heating-on temperature T — on1 , which causes undershoot.
  • the temperature sensor measures a minimum temperature T — min1 of the room temperature that decreases due to the undershoot, and the control unit computes a difference between the minimum temperature T — min1 and the first heating-on temperature T — on1 , that is, the amount of undershoot, and defines a computed value as B 1 .
  • a compensation value is determined according to undershoot that has occurred at the first cycle, and a heating-on temperature T — on2 at a next cycle is determined using the determined compensation value.
  • the compensation value that is determined according to the undershoot that has occurred at the first cycle is defined as B 1 /2, and a value that is obtained by adding the first heating-on temperature T — on1 and the compensation value is defined as a heating-on temperature at a next cycle.
  • the compensation value may be defined as having various values, such as B 1 /2 or B 1 /3.
  • the heating apparatus operates and the room temperature increases again.
  • the temperature sensor detects that the room temperature reaches the heating-off temperature (that is, T — off2 determined in Equation 1) at the second cycle, the operation of the heating apparatus is stopped (S 115 and S 117 ).
  • the operation of the heating apparatus is stopped at the temperature that is obtained by subtracting the first heating-off temperature by the compensation value A 1 /2 determined according to the amount of overshoot A 1 that has occurred at the first cycle.
  • a maximum temperature T — max2 of the room temperature becomes lower at the second cycle. Accordingly, it is possible to resolve the problem according to the related art in that a variation in room temperature is large.
  • the temperature sensor measures the maximum temperature T — max2 of the room temperature that increases due to overshoot at the second cycle, and the control unit computes a difference between the maximum temperature T — max2 and the second heating-off temperature T — off2 , that is, the amount of overshoot, and defines a computed value as A 2 .
  • a compensation value A 2 /2 is determined according to the overshoot that has occurred at the second cycle, and a heating-off temperature T — off3 at a next cycle is determined using the determined compensation value.
  • the room temperature decreases. In this case, if the room temperature reaches the second heating-on temperature T — on2 , the heating apparatus operates again (S 119 and S 121 ).
  • the temperature sensor measures a minimum temperature T — min2 of the room temperature that decreases due to the undershoot at the second cycle, and the control unit computes a difference between the minimum temperature T — min2 and the second heating-on temperature T — on2 , that is, the amount of undershoot, and defines a computed value as B 2 .
  • a compensation value B 2 /2 is determined according to the undershoot that has occurred at the second cycle, and a heating-on temperature T — on3 at a next cycle is determined using the compensation value.
  • the amounts of overshoot and undershoot that occur when the heating apparatus operates depend on an installation environment of the heating apparatus. Thus, it is difficult to accurately predict the amounts of overshoot and undershoot at the time of designing the heating apparatus. Accordingly, if using the compensation values that are determined according to the amounts of overshoot and undershoot measured by using the above-described method, it becomes possible to automatically set the heating-off temperature T — off and the heating-on temperature T — on , which reduce a variation in the room temperature.
  • Equations 1 to 8 that compute the heating-off temperature and the heating-on temperature may be represented by the following general Equations.
  • T — off(n) T — off(n ⁇ 1) ⁇ ( A (n ⁇ 1) /2)
  • T — on(n) T — on(n ⁇ 1) +( B (n ⁇ 1) /2)
  • (n) indicates a value at a current controlled cycle
  • (n ⁇ 1) indicates a value determined at a cycle immediately before the current controlled cycle
  • the heating-off temperature needs to be controlled to be higher than the room temperature T — set set by the user, and the heating-on temperature needs to be controlled to be lower than the room temperature T — set set by the user.
  • the heating-off temperature is preferably controlled to be higher than the minimum heating-off temperature T — off—min that is higher than the room temperature T — set set by the user by a predetermined temperature.
  • the minimum heating-off temperature T — off—min may be defined as 25.2° C.
  • the heating-on temperature is preferably controlled to be lower than the maximum heating-on temperature T — on—max that is lower than the room temperature T — set set by the user by a predetermined temperature.
  • the maximum heating-on temperature T — on—max may be defined as 24.8° C.
  • FIG. 4 is a graph illustrating a control method that reduces the amount of heat according to an embodiment of the present invention.
  • the control unit controls a gas valve (not shown in the drawings) that controls the amount of gas supplied and reduces the pressure of gas supplied (that is, reduces the amount of heat), thereby preventing overshoot from occurring.
  • the amount of heat may be decreased in proportion to the amount of overshoot, as shown in FIG. 4 . That is, when the overshoot does not occur, the amount of heat is controlled to become 100%, and when the overshoot ratio exceeds a predetermined ratio, the amount of heat is controlled to become 50%.
  • the overshoot ratio may be defined as A/(T — off ⁇ T — set ).
  • FIG. 5 is a graph illustrating a variation of a room temperature according to a method of controlling a heating apparatus according to an embodiment of the present invention.
  • FIG. 5 if controlling a heating apparatus using the method of controlling a heating apparatus according to the embodiment of the present invention with the above-described structure, upper and lower variations of the room temperature can be reduced.
  • a graph having small amplitude is formed on the basis of the room temperature T — set set by the user.
  • FIG. 6 is a schematic diagram illustrating an example of a heating system to which a method of controlling a heating apparatus according to an embodiment of the present invention is applied.
  • the heating system includes a heating apparatus 110 that supplies water heated by burning fuel, a heated water distributing unit 120 that distributes the heated water supplied by the heating apparatus 110 into individual rooms, a valve 130 that controls supply and stop of the heated water distributed by the heated water distributing unit 120 to the individual rooms, a valve controller 140 that controls driving of the valve 130 , and a room temperature controller 150 that is connected to the valve controller 140 and sets a predetermined room temperature for each of the rooms.
  • the valve 130 may be an on/off-typed valve or a proportional control valve that controls the amount of heated water supplied.
  • the heating apparatus 110 , the valve controller 140 , and the room temperature controller 150 are connected to each other through communication lines, and exchange necessary data with each other.
  • the valve controller 140 transmits a signal to the heating apparatus 110 , and drives the valve 130 to increase the temperature of a corresponding room.
  • a method of controlling the temperature of each room in a district heating system and a central heating system that externally supply heated water also controls overshoot and undershoot using the above-described control method, and can help to provide a comfortable indoor environment for the user.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
US12/531,060 2007-03-15 2008-03-10 Method for controlling heating apparatus Abandoned US20100096467A1 (en)

Applications Claiming Priority (3)

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KR1020070025403A KR100820650B1 (ko) 2007-03-15 2007-03-15 난방장치 제어방법
KR1020070025403 2007-03-15
PCT/KR2008/001344 WO2008111780A1 (en) 2007-03-15 2008-03-10 Method for controlling heating apparatus

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EP (1) EP2129971B1 (ru)
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KR (1) KR100820650B1 (ru)
CN (1) CN101680665B (ru)
WO (1) WO2008111780A1 (ru)

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US20100326646A1 (en) * 2008-06-27 2010-12-30 Yong-Bum Kim Method for controlling a hot water temperature using low flux in hot water supply system
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CN102252364B (zh) * 2011-04-29 2015-03-25 江丛兴 一种集中供热热网采暖温度补偿调节方法
KR20130080737A (ko) * 2012-01-05 2013-07-15 엘지전자 주식회사 공기조화기 및 공기조화기의 홈-리브 운전방법
EP2713233A3 (de) * 2012-09-26 2015-12-09 Gordon Seiptius Verfahren zur Regelung einer Raumtemperatur, Regler für eine Kühlvorrichtung und Kühlvorrichtung
CN104515194B (zh) * 2013-09-26 2017-08-01 珠海格力电器股份有限公司 供暖系统的控制方法及装置
CN104833040B (zh) * 2014-02-12 2017-09-15 珠海格力电器股份有限公司 空调系统的温度控制方法及温控器
CN103912914B (zh) * 2014-04-22 2016-10-05 珠海格力电器股份有限公司 一种地暖的控制方法
CN110553365B (zh) * 2019-09-17 2022-04-15 广东美的制冷设备有限公司 空调器的控制方法、空调器及存储介质
CN111351227B (zh) * 2020-02-13 2021-10-19 青岛经济技术开发区海尔热水器有限公司 具有零冷水循环功能的热水器控制方法及热水器
CN111981547B (zh) * 2020-05-22 2022-03-04 太原大四方节能环保股份有限公司 一种集中供热换热站室内温度直接调控装置与调控方法

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EP2129971A4 (en) 2014-07-02
KR100820650B1 (ko) 2008-04-08
WO2008111780A1 (en) 2008-09-18
JP2010521647A (ja) 2010-06-24
JP5146850B2 (ja) 2013-02-20
EP2129971B1 (en) 2016-12-21
CN101680665B (zh) 2012-04-25
EP2129971A1 (en) 2009-12-09

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