US20120247748A1 - Air control system - Google Patents

Air control system Download PDF

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Publication number
US20120247748A1
US20120247748A1 US13/395,280 US201013395280A US2012247748A1 US 20120247748 A1 US20120247748 A1 US 20120247748A1 US 201013395280 A US201013395280 A US 201013395280A US 2012247748 A1 US2012247748 A1 US 2012247748A1
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United States
Prior art keywords
absence
period
air conditioning
electric power
ventilating device
Prior art date
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Abandoned
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US13/395,280
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English (en)
Inventor
Atsushi Mise
Masaru Hashimoto
Izumi Usuki
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Corp
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Application filed by Panasonic Corp filed Critical Panasonic Corp
Publication of US20120247748A1 publication Critical patent/US20120247748A1/en
Assigned to PANASONIC CORPORATION reassignment PANASONIC CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HASHIMOTO, MASARU, MISE, ATSUSHI, USUKI, IZUMI
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. reassignment PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. ASSIGNMENT OF ASSIGNOR'S INTEREST Assignors: PANASONIC CORPORATION
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. reassignment PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. CORRECTIVE ASSIGNMENT TO CORRECT THE ERRONEOUSLY FILED APPLICATION NUMBERS 13/384239, 13/498734, 14/116681 AND 14/301144 PREVIOUSLY RECORDED ON REEL 034194 FRAME 0143. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Assignors: PANASONIC CORPORATION
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
    • F24F11/0001—Control or safety arrangements for ventilation
    • 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
    • F24F11/48—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling
    • 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
    • F24F11/66—Sleep mode
    • 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
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
    • F24F2005/0067—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy with photovoltaic panels
    • 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
    • F24F11/0001—Control or safety arrangements for ventilation
    • F24F2011/0006—Control or safety arrangements for ventilation using low temperature external supply air to assist cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/272—Solar heating or cooling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to an air-conditioning control system.
  • an air-conditioning control system that turns off air conditioning devices such as an air conditioner to seek energy saving when a dweller is absent within a home or turns on the air conditioner pursuant to a command from a cellular phone to maintain the home as a comfortable space before the dweller comes back home (see, e.g., Japanese Patent Application Publication No. 2008-138902).
  • the conventional air-conditioning control system essentially controls home appliances, and there has disclosed no system that can effectively use natural energy such as an ambient air to provide a comfortable indoor space to a home-coming family member while seeking energy saving.
  • a dweller is absent within a home for a short time period, e.g., about two or three hours. In other cases, a dweller does not exist within a home for a long time period, e.g., about two or three days.
  • an air conditioner needs to be differently controlled depending on the length of absence time period. However, the conventional air-conditioning control system remains silent on this point.
  • the present invention provides an air-conditioning control system capable of providing a comfortable indoor space to a home-coming family member while using natural energy to seek energy saving.
  • an air-conditioning control system including a ventilating device for performing ventilation between an indoor space and an outdoor space; an absence detecting unit for detecting absence of a human within the indoor space; and an air conditioning controller adapted to operate, when the absence of the human is detected by the absence detecting unit, the ventilating device during at least a part of an absence period to control a thermal environment within the indoor space.
  • the system may further include an air conditioning device for cooling or heating the indoor space.
  • the air conditioning controller may be adapted to operate, when the absence of the human is detected by the absence detecting unit, the ventilating device during at least a part of the absence period such that, when operating the air conditioning device next time, the thermal environment within the indoor space is controlled in such a way as to reduce a power consumption of the air conditioning device.
  • the absence detecting unit may be adapted to, when the absence of the human is detected by the absence detecting unit, make determination whether the absence period is a long period equal to or longer than a predetermined time period or a short period shorter than the predetermined time period, and the air conditioning controller is adapted to control the ventilating device in different control patterns depending on whether the absence period is the long period or the short period.
  • the air conditioning control throughout the absence period can be adaptively performed depending on whether the absence period is the long period or the short period.
  • the absence detecting unit may determine whether the absence period is the long period or the short period by comparing the length of the absence period with a threshold, and the threshold may be varied with at least one of year, month, day and hour at which the determination is made.
  • the absence detecting unit may determine whether the absence period is the long period or the short period by estimating an end time of the absence period, and the air conditioning controller may be adapted to continuously operate the ventilating device throughout the absence period if the absence period is the short period, and start an operation of the ventilating device a specified time earlier than the end time of the absence period if the absence period is the long period.
  • the ventilating device is not operated throughout the entire absence period but is operated for a minimum period immediately before a family member comes home. This makes it possible to prevent an unnecessary power consumption through the absence period and to effectively perform the control of the thermal environment within the home using the ventilating device.
  • the system may further include a photovoltaic power generating device for generating electric power by using sunlight to supply the electric power to the air conditioning device and the ventilating device.
  • the air conditioning controller may be adapted to operate the air conditioning device and the ventilating device throughout the absence period if the absence period is the long period and the electric power generated by the photovoltaic power generating device is equal to or greater than a predetermined value, and operate the ventilating device a specified time earlier than the end time of the absence period regardless of the magnitude of the electric power generated by the photovoltaic power generating device.
  • the air conditioning device and the ventilating device are operated to control the thermal environment within the home beforehand in such a way as to make the home comfortable. This makes it possible to more effectively operate the ventilating device immediately before a family member comes home.
  • the system may further include a photovoltaic power generating device for generating electric power by using sunlight to supply the electric power to the air conditioning device and the ventilating device; a battery for storing the electric power generated by the photovoltaic power generating device and supplying the electric power to the air conditioning device and the ventilating device; and a reverse power flow control unit for reversely supplying the electric power generated by the photovoltaic power generating device to a commercial power supply system.
  • the air conditioning controller may be adapted to control, if the absence period is the long period, the reverse power flow control unit to reversely supply the electric power generated by the photovoltaic power generating device to the commercial power supply system instead of supplying the electric power to the battery.
  • the DC power generated by the photovoltaic power generating device is charged to the battery throughout the absence period.
  • the absence period is the long period, the power loss is increased due to the discharge of the battery.
  • the DC power generated by the photovoltaic power generating device is reversely supplied and sold to other consumers, whereby the generated power can be effectively used in case of the long-term absence.
  • the absence detecting unit may estimate an end time of the absence period and make determination whether the absence period is a short period shorter than a first predetermined time period, a first long period equal to or longer than the first predetermined time period but shorter than a second predetermined time period, or a second long period longer than the second predetermined time period, and the air conditioning controller may be adapted to continuously operate the ventilating device throughout the absence period if the absence period is the short period, to start an operation of the ventilating device a specified time earlier than the end time of the absence period if the absence period is the first long period or the second long period, and control the reverse power flow control unit to reversely supply the electric power generated by the photovoltaic power generating device to the commercial power supply system instead of supplying the electric power to the battery if the absence period is the second long period.
  • the present invention is capable of providing a comfortable indoor space to a home-coming family member while using natural energy to seek energy saving.
  • FIG. 1 shows the configuration of an air-conditioning control system in accordance with first and second embodiments.
  • FIG. 2 shows the configuration of an air-conditioning control system in accordance with a third embodiment.
  • FIG. 3 shows the configuration of an air-conditioning control system in accordance with a fourth embodiment.
  • FIG. 1 shows the configuration of an air-conditioning control system for houses in accordance with the present embodiment.
  • the air-conditioning control system includes an air conditioning controller 1 for performing an air conditioning control within a home; an air conditioning device 2 having an air conditioner and designed to cool or heat the home; a ventilating device 3 for performing ventilation between the home and the outside; a human sensor 4 for detecting a human existing within the home; a setting unit 5 operated by a family member; a temperature sensor 6 for measuring a temperature within the home; a photovoltaic power generating device 7 for generating an electric power with sunlight; a battery 8 for storing the electric power generated by the photovoltaic power generating device 7 and supplying the electric power to the air conditioning device 2 and the ventilating device 3 ; and a heat accumulator 9 for accumulating heat using the electric power generated by the photovoltaic power generating device 7 .
  • the air conditioning controller 1 includes an absence detecting unit 1 a serving as an absence detecting unit for detecting the absence of a human within the home, the human sensor 4 and the setting unit 5 being connected to the absence detecting unit 1 a; a control pattern determining unit 1 b for determining operation control patterns of the air conditioning device 2 and the ventilating device 3 , the temperature sensor 6 being connected to the control pattern determining unit 1 b; and a control signal transmitting unit 1 c for transmitting control signals to the air conditioning device 2 and the ventilating device 3 pursuant to the control patterns determined by the control pattern determining unit 1 b.
  • the human sensor 4 transmits a human sensing signal to the air conditioning controller 1 .
  • the absence detecting unit 1 a of the air conditioning controller 1 determines that a human exists within the home and outputs an existence signal to the control pattern determining unit 1 b.
  • the control pattern determining unit 1 b determines, e.g., a control pattern in which the air conditioning device 2 is operated, if necessary, in combination with the ventilating device 3 .
  • the control signal transmitting unit 1 c Upon receiving the control pattern, the control signal transmitting unit 1 c transmits control signals corresponding to the control pattern to the ventilating device 3 and the air conditioning device 2 , thereby controlling the startup operations of the ventilating device 3 and the air conditioning device 2 . In this manner, the air conditioning controller 1 performs an air conditioning control to cool the home.
  • the measured temperature of the temperature sensor 6 is feedback controlled to become equal to a target temperature (26° C. in the present embodiment) set by a user through the use of the setting unit 5 .
  • the absence detecting unit 1 a of the air conditioning controller 1 determines that a human does not exist within the home and outputs an absence signal to the control pattern determining unit 1 b . Responsive to the absence signal, the control pattern determining unit 1 b determines, e.g., a control pattern in which the air conditioning device 2 is stopped throughout an absence period and the ventilating device 3 is operated to ventilate the home during at least a part of the absence period.
  • the control signal transmitting unit 1 c Upon receiving the control pattern, the control signal transmitting unit 1 c transmits control signals corresponding to the control pattern to the ventilating device 3 and the air conditioning device 2 , thereby controlling the startup operations of the ventilating device 3 and the air conditioning device 2 . In this manner, the air conditioning controller 1 performs an air conditioning control.
  • the ventilating device 3 performs ventilation throughout the absence period by which the indoor air heated to a high temperature within the closed home is exchanged with the outdoor air having a temperature lower than that of the indoor air.
  • the thermal environment is controlled in such a way as to reduce the indoor temperature.
  • the power consumption of the ventilating device 3 is lower than the power consumption of the air conditioning device 2 that performs cooling. As compared with a case where the air conditioning device 2 is operated throughout the absence period, it is therefore possible to save energy.
  • the human sensor 4 transmits a human sensing signal to the air conditioning controller 1 .
  • the air conditioning controller 1 performs again an air conditioning control to cool the home using the air conditioning device 2 , if necessary, in combination with the ventilating device 3 .
  • the thermal environment within the home is controlled in such a way as to make the home comfortable (e.g., to reduce the indoor temperature in summer) using the outdoor air as natural energy.
  • the air conditioning device 2 restarted by a home-coming family member can perform a cooling operation to make the indoor temperature equal to a target temperature.
  • FIG. 1 the air-conditioning control system of the present embodiment is shown in FIG. 1 .
  • the same components as those of the first embodiment will be designated by like reference symbols and will not be described.
  • the absence detecting unit 1 a serves not only as an absence detecting unit but also as an absence period determining unit for estimating the end time of the absence period (i.e., the home-coming time) and then determining whether the absence period is a long period equal to or longer than a predetermined time period or a short period shorter than the predetermined time period.
  • the process of estimating the home-coming time and the process of determining the long period or the short period are performed based on the settings inputted by a family member through the setting unit 5 before the family member leaves home.
  • the setting unit 5 includes a unit for inputting the length of the absence period or the expected home-coming time.
  • the home-coming time is estimated from the length of the absence period or the expected home-coming time thus inputted.
  • the absence period equal to or longer than the predetermined time period is determined as the long period.
  • the absence period shorter than the predetermined time period is determined as the short period.
  • the threshold used in determining whether the absence period is the long period or the short period varies depending on the air conditioning characteristics of a building and the capacity of the ventilating device 3 . As an example, the threshold is set equal to about two hours.
  • the absence detecting unit 1 a may store a history of past absence periods.
  • the absence detecting unit 1 a may estimate the length of the absence period based on the absence occurring time and day in the absence period history and may perform, pursuant to the length of the absence period, the process of estimating, the home-coming time and the process of determining whether the absence period is the long period or the short period.
  • the threshold which is compared with the length of the absence period to determine whether the absence period is the long period or the short period, may vary with at least one of the year, month, day and hour indicating the seasons and the time zone at which the determination is made. This makes it possible to set the threshold based on the life pattern of family members which varies depending on the seasons and the time zone.
  • the control pattern determining unit 1 b changes the control pattern of the ventilating device 3 throughout the absence period.
  • the air conditioning control throughout the absence period can be adaptively performed depending on whether the absence period is the long period or the short period.
  • the control pattern determining unit 1 b performs, throughout the entire absence period, the air conditioning control by which the air conditioning device 2 is stopped and the ventilating device 3 is operated to ventilate the home as in the first embodiment.
  • the control pattern determining unit 1 b stops the operations of the air conditioning device 2 and the ventilating device 3 after detecting the absence state.
  • the air conditioning device 2 is kept stopped throughout the entire absence period.
  • the ventilating device 3 is controlled to start its operation a specified time (e.g., two hours) earlier than the home-coming time of a family member.
  • the ventilating device 3 is not operated throughout the entire absence period but is operated for a minimum period immediately before a family member comes back home. This makes it possible to prevent unnecessary power consumption throughout the absence period and to effectively perform the control of the thermal environment within the home using the ventilating device 3 .
  • the control relying on the electric power generated by the photovoltaic power generating device 7 is added to the thermal environment control of the second embodiment.
  • the same components as those of the second embodiment will be designated by like reference symbols and will not be described.
  • the air conditioning controller 1 of the present embodiment includes a power measuring unit 1 d for measuring the electric power generated by the photovoltaic power generating device 7 .
  • the value of the generated power measured by the power measuring unit 1 d is outputted to the control pattern determining unit 1 b.
  • the control pattern determining unit 1 b changes the control pattern of the ventilating device 3 throughout the absence period, depending on whether the absence period is the long period or the short period.
  • the control pattern determining unit 1 b performs, throughout the entire absence period, the air conditioning control by which the air conditioning device 2 is stopped and the ventilating device 3 is operated to ventilate the home.
  • the control pattern determining unit 1 b controls the operations of the air conditioning device 2 and the ventilating device 3 depending on the value of the generated power measured by the generated power measuring unit 1 d, for example. Specifically, if the value of the generated power is smaller than a predetermined value, the control pattern determining unit 1 b stops the air conditioning device 2 and the ventilating device 3 . If the value of the generated power becomes equal to or greater than the predetermined value, the control pattern determining unit 1 b operates the air conditioning device 2 and the ventilating device 3 .
  • the surplus power of the photovoltaic power generating device 7 is measured. If the generated power has no surplus, the control pattern determining unit 1 b stops the air conditioning device 2 and the ventilating device 3 . If the generated power is surplus, the control pattern determining unit 1 b operates the air conditioning device 2 and the ventilating device 3 through the effective use of the surplus power and controls the thermal environment within the home beforehand in such a way as to make the home comfortable.
  • the surplus power of the photovoltaic power generating device 7 referred to herein means the electric power excluding the power charged to the battery 8 , the power supplied to the heat accumulator 9 and the power used in operating the home appliances.
  • the power measuring unit 1 d can measure not only the value of the generated power but also the power charged to the battery 8 , the power supplied to the heat accumulator 9 and the power used in operating the home appliances. Accordingly, it is possible to calculate the surplus power.
  • the operation of the ventilating device 3 is started a specified time (e.g., two hours) earlier than the home-coming time of a family member. Regardless of existence of the surplus power, the thermal environment within the home is controlled by the ventilating device 3 in such a way as to make the home comfortable immediately before the home-coming of a family member. If the generated power of the photovoltaic power generating device 7 is surplus immediately before the home-coming of a family member, the air conditioning device 2 is also operated in combination with the ventilating device 3 .
  • the air conditioning device 2 and the ventilating device 3 were operated by the surplus power throughout the absence period, it is possible to more effectively operate the ventilating device 3 immediately before the home-coming of a family member. Moreover, immediately before the home-coming of a family member, the air conditioning device 2 can be operated through the effective use of the surplus power so as to effectively improve the thermal environment.
  • the reverse power flow control of the photovoltaic power generating device 7 is added to the thermal environment control of the second embodiment.
  • the same components as those of the second embodiment will be designated by like reference symbols and will not be described.
  • the air-conditioning control system includes a power conditioner 10 for converting the DC power generated by the photovoltaic power generating device 7 to an AC power.
  • the air-conditioning control system has a function (a reverse power flow unit) of causing the generated power to reversely flow toward a commercial power supply system.
  • the air conditioning controller 1 includes a reverse power flow control unit le for controlling the reverse power flow operation of the power conditioner 10 .
  • the absence detecting unit 1 a assorts the absence period into three patterns, e.g., a short period corresponding to the absence period of less than one hour, a first long period corresponding to the absence period of not less than one hour but less than two days, and a second long period corresponding to the absence period of not less than two days.
  • the thresholds i.e., one hour and two days
  • the control pattern determining unit 1 b changes the control pattern of the ventilating device 3 throughout the absence period, depending on whether the absence period is the short period, the first long period or the second long period.
  • the control pattern determining unit 1 b performs, throughout the entire absence period, the air conditioning control by which the air conditioning device 2 is stopped and the ventilating device 3 is operated to ventilate the home.
  • the control pattern determining unit 1 b stops the operations of the air conditioning device 2 and the ventilating device 3 after detecting the absence state.
  • the air conditioning device 2 is kept stopped throughout the entire absence period.
  • the ventilating device 3 is controlled to start its operation a specified time earlier than the home-coming time of a family member.
  • the reverse power flow control unit 1 e operates the power conditioner 10 to reversely supply the DC power generated by the photovoltaic power generating device 7 to the commercial power supply system instead of the battery 8 and the heat accumulator 9 .
  • the DC power generated by the photovoltaic power generating device 7 is charged to the battery 8 and thermally accumulated in the heat accumulator 9 throughout the absence period.
  • the absence period is the second long period, i.e., the longest period
  • the power loss is increased due to the discharge of the battery 8 or the heat dissipation of the heat accumulator 9 .
  • the DC power generated by the photovoltaic power generating device 7 is reversely supplied and sold to other customers, whereby the generated power can be effectively used during the long-term absence.
  • a summer cooling operation has been taken as an example to describe the configuration of providing a comfortable indoor space to a home-coming family member while using the outdoor air as natural energy to seek energy saving.
  • a winter heating operation it is equally possible to obtain the same effect by using the outdoor air having a temperature higher than the indoor temperature.
  • An outdoor temperature measuring unit may be provided to measure the outdoor temperature.
  • the ventilating device 3 may be operated if a human does not exist within the home and the indoor temperature measured a specified time earlier than the expected home-coming time is higher than or lower than the manually-set target temperature and the outdoor temperature.
  • the ventilating device 3 may not be operated in other cases. This is to keep the ventilating device 3 stopped when the indoor temperature is lower than the outdoor temperature in summer or when the indoor temperature is higher than the outdoor temperature in winter. It may also be possible to stop the ventilating device 3 when the indoor temperature reaches a target temperature.
  • the ventilating device 3 is a ventilating fan.
  • the ventilating device 3 may include other devices capable of introducing the outdoor air into the home, e.g., an electric window.
  • the air-conditioning control system is installed in a house by way of example.
  • the air-conditioning control system may be installed in any place where the indoor space and the outdoor space are divided, e.g., in a residential complex, an apartment, an office, a shopping arcade and a factory.

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  • 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)
  • Air Conditioning Control Device (AREA)
  • Ventilation (AREA)
US13/395,280 2009-09-11 2010-08-30 Air control system Abandoned US20120247748A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2009210851A JP5330940B2 (ja) 2009-09-11 2009-09-11 空調制御システム
JP2009-210851 2009-09-11
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US20150136378A1 (en) * 2012-06-22 2015-05-21 Mitsubishi Electric Corporation Air-conditioning system
US20150345817A1 (en) * 2013-01-30 2015-12-03 Mitsubishi Electric Corporation Control device, control system, control method, and program
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WO2016056827A1 (fr) * 2014-10-07 2016-04-14 Samsung Electronics Co., Ltd. Procédé et appareil de gestion de chauffage, de ventilation et de climatisation
RU2595976C1 (ru) * 2014-02-12 2016-08-27 Мицубиси Электрик Корпорейшн Система кондиционирования воздуха
US9612586B2 (en) 2011-04-21 2017-04-04 Panasonic Intellectual Property Management Co., Ltd. Energy management apparatus and energy management system
US9869482B2 (en) 2012-10-05 2018-01-16 Mitsubishi Electric Corporation Ventilation system, ventilation method, ventilation control device, and non-transitory computer-readable recording medium
US10344996B2 (en) 2014-04-04 2019-07-09 Samsung Electronics Co., Ltd. Method and apparatus for controlling energy in HVAC system
US20200056424A1 (en) 2018-08-14 2020-02-20 Marvin Lumber And Cedar Company, D/B/A Marvin Windows And Doors Fenestration assembly and building service control with the same
WO2022045900A1 (fr) * 2020-08-31 2022-03-03 Itronics Limited Unité de ventilation et système de ventilation d'un espace intérieur
US20220128256A1 (en) * 2019-03-26 2022-04-28 Panasonic Intellectual Property Management Co., Ltd. Air conditioning system controller
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US20130019747A1 (en) * 2010-03-31 2013-01-24 Stuart Martin Innes Super Integrated Security and Air Cleansing Systems (SISACS)
US9612586B2 (en) 2011-04-21 2017-04-04 Panasonic Intellectual Property Management Co., Ltd. Energy management apparatus and energy management system
US20150136378A1 (en) * 2012-06-22 2015-05-21 Mitsubishi Electric Corporation Air-conditioning system
US9869482B2 (en) 2012-10-05 2018-01-16 Mitsubishi Electric Corporation Ventilation system, ventilation method, ventilation control device, and non-transitory computer-readable recording medium
US20140097257A1 (en) * 2012-10-09 2014-04-10 Mitsubishi Electric Corporation Temperature adjustment system, temperature adjustment method, system controller, and non-transitory computer-readable recording medium
US20150345817A1 (en) * 2013-01-30 2015-12-03 Mitsubishi Electric Corporation Control device, control system, control method, and program
US10054328B2 (en) * 2013-01-30 2018-08-21 Mitsubishi Electric Corporation Operational conditioning based on environmental components
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RU2595976C1 (ru) * 2014-02-12 2016-08-27 Мицубиси Электрик Корпорейшн Система кондиционирования воздуха
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WO2016056827A1 (fr) * 2014-10-07 2016-04-14 Samsung Electronics Co., Ltd. Procédé et appareil de gestion de chauffage, de ventilation et de climatisation
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US11976839B2 (en) 2018-05-30 2024-05-07 Mitsubishi Electric Corporation Ventilation system, air-conditioning system, and method of installing air-conditioning system
US20200056424A1 (en) 2018-08-14 2020-02-20 Marvin Lumber And Cedar Company, D/B/A Marvin Windows And Doors Fenestration assembly and building service control with the same
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US11976833B2 (en) * 2019-03-26 2024-05-07 Panasonic Intellectual Property Management Co., Ltd. Air conditioning system controller
WO2022045900A1 (fr) * 2020-08-31 2022-03-03 Itronics Limited Unité de ventilation et système de ventilation d'un espace intérieur

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SG179142A1 (en) 2012-04-27
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CN102639942A (zh) 2012-08-15

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