A ventilation system with: (i) a volumetric enclosure having an inlet and an outlet and for coupling to an interior of a building habitable by human occupants; (ii) a fan located within the volumetric enclosure and for drawing air exterior to the building and supplying the air to the interior of the building; (iii) a programmable control apparatus for enabling and disabling the fan in response to a plurality of parameters, at least some of the parameters relating to quality of air to me moved in response to the fan; and (iv) circuitry coupled between the inlet and the outlet for measuring a signal representative of a volume of air passing through the volumetric enclosure over a period of time.

An air conditioning system suppresses energy consumption by efficient shared use of air in a common space that is not subjected to air conditioning in an indoor area, among a plurality of air conditioners for the purpose of heat exchange. A plurality of air conditioners each include: a usage-side heat exchanger configured to carry out heat exchange with air in an air-conditioning target space; a heat source-side heat exchanger configured to carry out heat transfer to and from the usage-side heat exchanger; and a heat source-side fan configured to feed air from a common space to the heat source-side heat exchanger and to blow the air into the common space. The heat source-side heat exchangers of the air conditioners are disposed in the common space. A first ventilation fan whose airflow volume is changeable is disposed near an exhaust port through which air is discharged from the common space toward an outdoor area. A controller changes the airflow volume of the ventilation fan, based on information on an air temperature of the common space.

An air conditioning system suppresses energy consumption by efficient shared use of air in a common space that is not subjected to air conditioning in an indoor area, among a plurality of air conditioners for the purpose of heat exchange. A plurality of air conditioners each include: a usage-side heat exchanger configured to carry out heat exchange with air in an air-conditioning target space; a heat source-side heat exchanger configured to carry out heat transfer to and from the usage-side heat exchanger; and a heat source-side fan configured to feed air from a common space to the heat source-side heat exchanger and to blow the air into the common space. The heat source-side heat exchangers of the air conditioners are disposed in the common space. A first ventilation fan whose airflow volume is changeable is disposed near an exhaust port through which air is discharged from the common space toward an outdoor area. A controller changes the airflow volume of the ventilation fan, based on information on an air temperature of the common space.

This disclosure discloses a communication implementation method and device for air conditioning units, a storage medium and a processor. The method includes: acquiring a channel state of a current power line carrier channel used between units in an air conditioning system; and determining whether to switch the channel between the units from the current power carrier channel to a next power carrier channel according to the channel state, wherein the next power carrier channel is any one of power carrier channels other than the current power carrier channel in the air conditioning system.

This disclosure discloses a communication implementation method and device for air conditioning units, a storage medium and a processor. The method includes: acquiring a channel state of a current power line carrier channel used between units in an air conditioning system; and determining whether to switch the channel between the units from the current power carrier channel to a next power carrier channel according to the channel state, wherein the next power carrier channel is any one of power carrier channels other than the current power carrier channel in the air conditioning system.

An air conditioner indoor unit, comprising a casing, and a fan casing, an electric heating assembly and a heat exchanger assembly which are disposed in the casing. The fan casing has a return air inlet and an air outlet, the electric heating assembly and the heat exchanger assembly are both disposed at the air outlet of the fan casing, and the electric heating assembly is located between the fan casing and the heat exchanger assembly. Further disclosed are an air conditioner control method, an air conditioner, and a storage medium. Since the electric heating assembly is disposed at the air outlet of the fan casing and between the fan casing and the heat exchanger assembly, the fan casing and the heat exchanger assembly can isolate a fire source that may be generated by the electric heating assembly when the electric heating assembly has a blow or other accident.

An air conditioner indoor unit, comprising a casing, and a fan casing, an electric heating assembly and a heat exchanger assembly which are disposed in the casing. The fan casing has a return air inlet and an air outlet, the electric heating assembly and the heat exchanger assembly are both disposed at the air outlet of the fan casing, and the electric heating assembly is located between the fan casing and the heat exchanger assembly. Further disclosed are an air conditioner control method, an air conditioner, and a storage medium. Since the electric heating assembly is disposed at the air outlet of the fan casing and between the fan casing and the heat exchanger assembly, the fan casing and the heat exchanger assembly can isolate a fire source that may be generated by the electric heating assembly when the electric heating assembly has a blow or other accident.

An air-conditioning method suitable for reducing energy consumption is selected. A comparison unit 105 compares first operating efficiency, which is operating efficiency when only first air conditioning is performed, with second operating efficiency, which is operating efficiency when only second air conditioning is performed. The first air conditioning is air conditioning in an air-conditioning target space by an air conditioner, and the second air conditioning is air conditioning in the air-conditioning target space by supplying outdoor air without adjusting a temperature of the outdoor air to the air-conditioning target space. A decision unit 106 decides whether to perform the first air conditioning and whether to perform the second air conditioning, based on a result of comparison between the first operating efficiency and the second operating efficiency by the comparison unit 105.

An air-conditioning method suitable for reducing energy consumption is selected. A comparison unit 105 compares first operating efficiency, which is operating efficiency when only first air conditioning is performed, with second operating efficiency, which is operating efficiency when only second air conditioning is performed. The first air conditioning is air conditioning in an air-conditioning target space by an air conditioner, and the second air conditioning is air conditioning in the air-conditioning target space by supplying outdoor air without adjusting a temperature of the outdoor air to the air-conditioning target space. A decision unit 106 decides whether to perform the first air conditioning and whether to perform the second air conditioning, based on a result of comparison between the first operating efficiency and the second operating efficiency by the comparison unit 105.

A multifunction adaptive whole house fan system can include a whole house fan to pull large volume of air through a building structure. The whole house fan can pull air from a motorized window or damper into the building structure and expel air through an attic. The system can monitor the environment to operate the whole house fan when desired conditions are present in coordination with other systems of the building structure to reduce overall energy consumption.