US20080178622A1 - Demand control system and method for multi-type air conditioner - Google Patents

Demand control system and method for multi-type air conditioner Download PDF

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Publication number
US20080178622A1
US20080178622A1 US12/017,610 US1761008A US2008178622A1 US 20080178622 A1 US20080178622 A1 US 20080178622A1 US 1761008 A US1761008 A US 1761008A US 2008178622 A1 US2008178622 A1 US 2008178622A1
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US
United States
Prior art keywords
wattage
air conditioner
demand control
estimated
consumption
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/017,610
Other languages
English (en)
Inventor
Han-Won Park
Sang-Chul YOUN
Duck-Gu JEON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JEON, DUCK-GU, PARK, HAN-WON, YOUN, SANG-CHUL
Publication of US20080178622A1 publication Critical patent/US20080178622A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F24F11/47—Responding to energy costs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/60—Energy consumption

Definitions

  • the present invention relates to a demand control system and method for a multi-type air conditioner.
  • a demand control regime for a multi-type air conditioner is a technique for controlling the consumption of electrical power by switching on/off an air conditioner randomly selected or selected among a plurality of air conditioners according to a pre-set cycle so as to control the operational efficiency of a multi-type air conditioner within the range of a permissible wattage (i.e., the amount of electrical power).
  • the demand control regime emphasizes electrical power control rather than a user's convenience, and operates to restrict the power consumption by sequentially switching off consumption loads of the electrical power.
  • the related art demand control system for a multi-type air conditioner has the following problem. That is, because the air conditioner to be provided or deprived of electrical power supply is selected without regard to the user's convenience, the user in an area where the air conditioner is forcibly controlled is located may feel substantially less comfortable.
  • the present invention is directed to provide a demand control system and a demand control method for a multi-type air conditioner which is capable of enhancing a user's comfort as well as of stably maintaining an electrical power, resulting from reducing a wattage consumption by controlling an air conditioner with changing an operation mode of the air conditioner when an estimated wattage exceeds a set wattage.
  • a demand control system for a multi-type air conditioner comprising: a wattage consumption sensing unit for calculating an estimated consumed wattage of a plurality of air conditioners of a building; and a demand control unit for changing an operation mode of at least one air conditioner among the plurality of air conditioners when the estimated wattage calculated by the wattage consumption sensing unit exceeds a set wattage value.
  • a demand control method for a multi-type air conditioner comprising: calculating an estimated wattage consumed by a plurality of air conditioners of a building; and changing an operation mode of at least one air conditioner among the plurality of air conditioners when the calculated wattage exceeds a set wattage value.
  • FIG. 1 is a schematic block diagram showing a demand control system for a multi-type air conditioner in accordance with the present invention.
  • FIG. 2 is a flowchart showing a control method of the demand control system of FIG. 1 .
  • the demand control system for a multi-type air conditioner in accordance with the present invention may include a wattage consumption sensing unit 10 for calculating an estimated wattage consumed by a plurality of air conditioners 50 of a building; and a demand control unit 20 for controlling an operational efficiency of the air conditioners 50 by changing an operation mode of at least one air conditioner 50 of the plurality of air conditioners 50 when the wattage consumption sensing unit notifies the demand control unit that the estimated wattage consumption exceeds the set wattage value.
  • the plurality of air conditioners 50 may each include an outdoor unit 51 and at least one indoor unit 52 connected to the outdoor unit 51 .
  • the wattage consumption sensing unit 10 may receive data with respect to the wattage measured from a watt-hour meter 71 by being connected with the watt-hour meter 71 connected with the plurality of air conditioners 50 so as to estimate the consumed wattage after a certain time duration. And then, the wattage consumption sensing unit 10 may sense whether the estimated wattage exceeds a pre-set demand wattage value so that the sensed information may be transferred to the demand control unit 20 .
  • the demand control unit 20 may be connected with the wattage consumption wattage sensing unit 10 and to each outdoor unit 51 and indoor unit 52 of the air conditioners 50 so that, when the estimated wattage exceeds the set wattage value, the operation mode of the air conditioners 50 may be sequentially changed so as to reduce the wattage consumption of the plurality of air conditioners 50 .
  • the demand control unit 20 may switch off the outdoor units 51 of the air conditioners so that the operation mode of the indoor unit 52 in a corresponding area may be changed into a blowing (fan only) mode for reducing the wattage consumption of the air conditioners 50 .
  • the demand control unit 20 may change the operation mode of the indoor units 52 into the blowing (fan only) mode by switching off the outdoor unit 51 , and also into another operation mode that can reduce the power consumption by changing into a dehumidifying mode, changing a blowing amount, controlling a circulation speed of a refrigerant, or the like.
  • changing the operation mode of the air conditioners 50 for reducing the wattage consumption can prevent the temperature in each area from suddenly being changed, comparing with abruptly shutting off the electrical power supply for the air conditioners 50 , and accordingly a user in the area where the forcibly controlled air conditioner 50 is located may feel comfortable for a longer time. Also, the time taken until the air conditioner 50 is restored from the forcibly controlled temperature to the prior temperature is shortened, thereby preventing unnecessary energy consumption.
  • the wattage consumption sensing unit 10 may sense whether the estimated wattage exceeds the pre-set wattage value by calculating the estimated wattage based on the information regarding the consumed wattage measured by the watt-hour meter 71 , and then transfer the thusly sensed information to the demand control unit 20 (S 1 ).
  • the demand control unit 2 may select at least one outdoor unit 51 (S 2 ).
  • the forcibly controlled outdoor unit 51 may be excluded.
  • the demand control unit 2 changes an operation mode of at least one air conditioner of the plurality of air conditioners. For example, the demand control unit 2 switches the at least one air conditioner into a blowing mode, switches the at least one air conditioner into a dehumidifying mode, changes a blowing amount of the at least one air conditioner, or changes a circulation speed of a refrigerant of the at least one air conditioner
  • the selected outdoor unit 51 may be switched off so that the operation mode of the indoor unit(s) 52 connected with the outdoor unit 51 may be changed into the blowing (fan only) mode (S 3 ). As such, the overall wattage consumption of the air conditioners may be reduced resulting from the switching off of the outdoor unit 51 .
  • the wattage consumption sensing unit 10 may sense the information that the estimated wattage falls short of the set wattage value, and then transfer such sensed information to the demand control unit 20 . Then, the demand control unit 20 may change the operation mode of the air conditioners controlled in the previous step into a cooling mode or a warming mode from the blowing mode, so that the operation mode of the air conditioners may be restored to their previous original state (S 4 ).
  • the demand control system and the demand control method for a multi-type air conditioner in accordance with the present invention operates to control the operational efficiency of the air conditioners by changing the operation mode of the air conditioners so as to reduce the wattage consumption of the air conditioners when the estimated wattage consumption exceeds a set wattage value, thereby enabling a user in the area where the controlled air conditioner is located to feel comfortable pleasant for a longer time.
  • the time taken until the air conditioner is restored from the forcibly controlled temperature to the prior desired temperature is shortened, thereby preventing unnecessary energy consumption.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)
US12/017,610 2007-01-26 2008-01-22 Demand control system and method for multi-type air conditioner Abandoned US20080178622A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020070008569A KR20080070438A (ko) 2007-01-26 2007-01-26 멀티에어컨의 디맨드 제어시스템 및 디맨드 제어방법
KR10-2007-0008569 2007-01-26

Publications (1)

Publication Number Publication Date
US20080178622A1 true US20080178622A1 (en) 2008-07-31

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US12/017,610 Abandoned US20080178622A1 (en) 2007-01-26 2008-01-22 Demand control system and method for multi-type air conditioner

Country Status (4)

Country Link
US (1) US20080178622A1 (ko)
EP (1) EP1953473B1 (ko)
KR (1) KR20080070438A (ko)
CN (1) CN101231020A (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015203544A (ja) * 2014-04-16 2015-11-16 株式会社日立製作所 空調機器管理システム

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8290628B2 (en) * 2010-07-23 2012-10-16 Lg Electronics Inc. Air conditioner and method for controlling the same
DE102010052699A1 (de) * 2010-11-26 2012-05-31 Liebherr-Hausgeräte Ochsenhausen GmbH Verfahren zum Betrieb eines Kühl- und/oder Gefriergeräts und Kühl- und/oder Gefriergerät
FR2976654B1 (fr) * 2011-06-15 2013-07-12 Voltalis Dispositif de chauffage, ventilation et/ou climatisation a gestion d'alimentation ciblee.
CN115667809A (zh) * 2020-06-18 2023-01-31 三菱电机株式会社 空调系统和对空调系统的电力量进行控制的方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6171185B1 (en) * 1998-11-27 2001-01-09 Samsung Electronics Co., Ltd. Power saving operational control method of air conditioner
US20040255601A1 (en) * 2003-06-19 2004-12-23 Lg Electronics Inc. Central control system of air conditioners and method for operating the same
US20050097902A1 (en) * 2003-11-11 2005-05-12 Lg Electronics Inc. Central control system of air conditioners and method for operating the same
US20060191275A1 (en) * 2005-02-25 2006-08-31 Lg Electronics Inc. Multi-air conditioner central control system and power control method thereof
US20060207269A1 (en) * 2005-02-25 2006-09-21 Lg Electronics Inc. Multi-air conditioner peak power control system and control method thereof
US20060287774A1 (en) * 2005-02-24 2006-12-21 Lg Electronics Inc. Multi-air conditioner central control system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6346330A (ja) * 1986-08-11 1988-02-27 Sekisui Chem Co Ltd ヒ−トポンプ式熱交換装置
JPH01118051A (ja) * 1987-10-30 1989-05-10 Matsushita Seiko Co Ltd 電力デマンド制御装置
JP4217092B2 (ja) * 2003-03-26 2009-01-28 三菱電機エンジニアリング株式会社 空調機のデマンド制御装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6171185B1 (en) * 1998-11-27 2001-01-09 Samsung Electronics Co., Ltd. Power saving operational control method of air conditioner
US20040255601A1 (en) * 2003-06-19 2004-12-23 Lg Electronics Inc. Central control system of air conditioners and method for operating the same
US7287393B2 (en) * 2003-06-19 2007-10-30 Lg Electronics Inc. Central control system of air conditioners and method for operating the same
US20050097902A1 (en) * 2003-11-11 2005-05-12 Lg Electronics Inc. Central control system of air conditioners and method for operating the same
US20060287774A1 (en) * 2005-02-24 2006-12-21 Lg Electronics Inc. Multi-air conditioner central control system
US20060191275A1 (en) * 2005-02-25 2006-08-31 Lg Electronics Inc. Multi-air conditioner central control system and power control method thereof
US20060207269A1 (en) * 2005-02-25 2006-09-21 Lg Electronics Inc. Multi-air conditioner peak power control system and control method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015203544A (ja) * 2014-04-16 2015-11-16 株式会社日立製作所 空調機器管理システム

Also Published As

Publication number Publication date
EP1953473A1 (en) 2008-08-06
CN101231020A (zh) 2008-07-30
EP1953473B1 (en) 2017-07-12
KR20080070438A (ko) 2008-07-30

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Date Code Title Description
AS Assignment

Owner name: LG ELECTRONICS INC., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:PARK, HAN-WON;YOUN, SANG-CHUL;JEON, DUCK-GU;REEL/FRAME:020396/0211

Effective date: 20080111

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION