Air conditioning system, floor blowing air conditioner, control method, and storage medium

A floor blowing air conditioner provided in an air conditioning system in a building, the building including a floor having blowing outlets, a ceiling, and a side wall, the building having a space surrounded by the floor, the ceiling, and the side wall, the space having a lower space closer to the floor than the ceiling,

• the floor blowing air conditioner being configured to blow floor warm air to an inside of the space from the blowing outlets,
• the floor blowing air conditioner comprising a blowing temperature controller configured to control a blowing temperature of the floor warm air blown out from the blowing outlets to the inside of the space on the basis of a lower part temperature at a position in the lower space, wherein
• the blowing temperature controller controls the blowing temperature of the floor warm air to be blown into the space from the blowing outlets in different operation modes, including a high-load mode and a low-load mode, which are different from each other depending on whether the air conditioning system is at a low load or at a high load,
• in the high-load mode, the blowing temperature of the floor warm air is controlled based on a first upper limit temperature of the blowing temperature, and the first upper limit temperature is a temperature obtained by adding 10° C. to the lower part temperature, and
• in the low-load mode, the blowing temperature of the floor warm air is controlled based on the first upper limit temperature of the blowing temperature until the lower part temperature reaches a predetermined temperature and thereafter, when the lower part temperature is above the predetermined temperature, the blowing temperature of the floor warm air is controlled based on a second upper limit temperature of the blowing temperature, and the second upper limit temperature is different from the first upper limit temperature.

A control method of an air conditioning system, the air conditioning system being provided in a building, the building including a floor having blowing outlets, a ceiling, and a side wall, the building having a space surrounded by the floor, the ceiling, and the side wall, the space having a lower space closer to the floor than the ceiling,

• the air conditioning system comprising a first indoor unit, a remote thermo-sensor, a second indoor unit, an outdoor unit, and a refrigerant pipe,
• the first indoor unit being configured to blow ceiling warm air from the ceiling to an inside of the space, the first indoor unit being configured to control a temperature of the inside of the space by controlling the blowing of the ceiling warm air, the first indoor unit including a suction temperature sensor configured to measure a suction temperature of air suctioned into the first indoor unit,
• the remote thermo-sensor installed on the side wall, the remote thermo-sensor being configured to measure a lower part temperature at a position in the lower space,
• the second indoor unit configured to blow floor warm air to the inside of the space from the blowing outlets on the basis of the lower part temperature measured by the remote thermo-sensor, the second indoor unit being configured to control the blowing of the floor warm air,
• the outdoor unit including a compressor, and the refrigerant pipe connecting the first indoor unit, the second indoor unit, and the outdoor unit, the refrigerant pipe connecting the first indoor unit and the second indoor unit in parallel,
• the control method comprising:
• a step of, by the first indoor unit, controlling a temperature of the inside of the space by controlling the blowing of the ceiling warm air to the inside of the space;
• and
• a step of, by the second indoor unit, controlling the blowing of the floor warm air from the blowing outlets to the inside of the space on the basis of the lower part temperature, wherein
• in the step of controlling the blowing of the floor warm air, the second indoor unit controls a blowing temperature of the floor warm air to be blown into the space from the blowing outlets in different operation modes, including a high-load mode and a low-load mode, which are different from each other depending on whether the air conditioning system is at a low load or at a high load,
• in the high-load mode, the blowing temperature of the floor warm air is controlled based on a first upper limit temperature of the blowing temperature, and the first upper limit temperature is a temperature obtained by adding 10° C. to the lower part temperature, and
• in the low-load mode, the blowing temperature of the floor warm air is controlled based on the first upper limit temperature of the blowing temperature until the lower part temperature reaches a predetermined temperature and thereafter, when the lower part temperature is above the predetermined temperature, the blowing temperature of the floor warm air is controlled based on a second upper limit temperature of the blowing temperature, and the second upper limit temperature is different from the first upper limit temperature.

A computer-readable non-transitory storage medium storing a program for a computer of an air conditioning system, the air conditioning system being provided in a building, the building including a floor having blowing outlets, a ceiling, and a side wall, the building having a space surrounded by the floor, the ceiling, and the side wall, the space having a lower space closer to the floor than the ceiling,

• the air conditioning system comprising a first indoor unit, a remote thermo-sensor, a second indoor unit, an outdoor unit, and a refrigerant pipe
• the first indoor unit being configured to blow ceiling warm air from the ceiling to an inside of the space, the first indoor unit being configured to control a temperature of the inside of the space by controlling the blowing of the ceiling warm air, the first indoor unit including a suction temperature sensor configured to measure a suction temperature of air suctioned into the first indoor unit,
• the remote thermo-sensor installed on the side wall, the remote thermo-sensor being configured to measure a lower part temperature at a position in the lower space,
• the second indoor unit configured to blow floor warm air to the inside of the space from the blowing outlets based on the lower part temperature measured by the remote thermo-sensor, the second indoor unit being configured to control the blowing of the floor warm air,
• the outdoor unit including a compressor, and
• the refrigerant pipe connecting the first indoor unit, the second indoor unit, and the outdoor unit, the refrigerant pipe connecting the first indoor unit and the second indoor unit in parallel,
• the program causing the computer of the air conditioning system to execute:
• a step of causing the first indoor unit to control a temperature of the inside of the space by controlling the blowing of the ceiling warm air from the ceiling to the inside of the space;
• and
• a step of causing the second indoor unit to control the blowing of the floor warm air from the blowing outlets to the inside of the space on the basis of the lower part temperature, wherein
• in the step of controlling the blowing of the floor warm air, the second indoor unit controls a blowing temperature of the floor warm air to be blown into the space from the blowing outlets in different operation modes, including a high-load mode and a low-load mode, which are different from each other depending on whether the air conditioning system is at a low load or at a high load,
• in the high-load mode, the blowing temperature of the floor warm air is controlled based on a first upper limit temperature of the blowing temperature, and the first upper limit temperature is a temperature obtained by adding 10° C. to the lower part temperature, and
• in the low-load mode, the blowing temperature of the floor warm air is controlled based on the first upper limit temperature of the blowing temperature until the lower part temperature reaches a predetermined temperature and thereafter, when the lower part temperature is above the predetermined temperature, the blowing temperature of the floor warm air is controlled based on a second upper limit temperature of the blowing temperature, and the second upper limit temperature is different from the first upper limit temperature.