VENTILATION SYSTEM

• US 20130303074A1
• Filed: 05/07/2012
• Published: 11/14/2013
• Est. Priority Date: 05/12/2011
• Status: Active Grant

• Current Assignee: Daikin Industries Ltd
• Original Assignee: Daikin Industries Ltd
• Inventors: Eguchi, Akihiro, Yabu, Tomohiro, Sakai, Gakuto
• Granted Patent: US 9,228,753 B2
• Time in Patent Office: Days
• US Class Current: 454/256
• CPC Class Codes: F24F 11/0001 for ventilation F24F11/30 takes precedence
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/63 Electronic processing
• CPC Class Codes: F24F 11/77 by controlling the speed of ventilators
• CPC Class Codes: F24F 11/81 by controlling the air supply to heat-exchangers or bypass channels
• CPC Class Codes: F24F 11/84 using valves
• CPC Class Codes: F24F 11/86 by controlling compressors within refrigeration or heat pump circuits
• CPC Class Codes: F24F 2110/10 Temperature
• CPC Class Codes: F24F 2110/12 of the outside air
• CPC Class Codes: F24F 2110/20 Humidity
• CPC Class Codes: F24F 2110/22 of the outside air
• CPC Class Codes: F24F 2140/00 Control inputs relating to system states
• CPC Class Codes: F24F 2140/60 Energy consumption
• CPC Class Codes: F24F 3/1417 with liquid hygroscopic desiccants
• CPC Class Codes: F24F 3/147 with both heat and humidity transfer between supplied and exhausted air
• CPC Class Codes: F24F 7/06 with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
• CPC Class Codes: F25B 13/00 Compression machines, plants or systems, with reversible cycle defrosting cycles F25B47/02
• CPC Class Codes: F25B 2313/02741 using one four-way valve
• CPC Class Codes: F25B 2313/0293 related to the indoor fan, e.g. controlling speed
• CPC Class Codes: F25B 2313/0294 related to the outdoor fan, e.g. controlling speed
• CPC Class Codes: F25B 2600/0253 : with variable speed
• CPC Class Codes: F25B 2700/1931 : Discharge pressures
• CPC Class Codes: F25B 2700/1933 : Suction pressures
• CPC Class Codes: F25B 2700/21151 : at the suction side of the compressor
• CPC Class Codes: F25B 2700/21152 : at the discharge side of the compressor
• CPC Class Codes: F25B 41/34 : with the valve member being actuated by electric means, e.g. by piezoelectric actuators
• CPC Class Codes: Y02B 30/70 : Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

A ventilation system includes a connection determinator configured to determine that N-th, second, and sixth humidity controlling ventilation devices are connected to an identical second duct bank in a situation where when fans of the second and sixth humidity controlling ventilation devices are driven, and the rotational speed of a fan of the N-th humidity controlling ventilation device is changed, a power detector detects fluctuations in the power consumed by the fan of each of the second and sixth humidity controlling ventilation devices.

Claims

1. A ventilation system comprising:

a plurality of ventilation devices including at least one specific ventilation device and a determination ventilation device that each include an air blowing fan;

ducts to which the ventilation devices are connected;

a fan controller configured to control a rotational speed of the air blowing fan of each of the ventilation devices;

a power detector configured to detect a fluctuation in power consumed by the air blowing fan of each of the ventilation devices; and

a connection determinator configured to determine that the determination ventilation device and the specific ventilation device are connected to an identical one of the ducts in a situation where when the fan controller drives the air blowing fan of the specific ventilation device connected to a specific duct, and changes the rotational speed of the air blowing fan of the determination ventilation device, the power detector detects a fluctuation in the power consumed by the air blowing fan of the specific ventilation device, and determine that the determination ventilation device and the specific ventilation device are connected to different ones of the ducts in a situation where when the fan controller drives the air blowing fan of the specific ventilation device connected to a specific duct, and changes the rotational speed of the air blowing fan of the determination ventilation device, the power detector does not detect a fluctuation in the power consumed by the air blowing fan of the specific ventilation device.

2. The ventilation system of claim 1, wherein

the connection determinator is configured to determine that the determination ventilation device and the specific ventilation device are connected to an identical one of the ducts in a situation where when the rotational speed of the air blowing fan of the determination ventilation device is increased, the power consumed by the air blowing fan of the specific ventilation device decreases.

3. The ventilation system of claim 1, wherein

the connection determinator is configured to determine that the determination ventilation device and the specific ventilation device are connected to an identical one of the ducts in a situation where when the rotational speed of the air blowing fan of the determination ventilation device is decreased, the power consumed by the air blowing fan of the specific ventilation device increases.