Daikin Industries, Ltd.

Kouji Tatsumi

Yasunori Okamoto

Naotoshi Fujita

Masaaki Kawagishi

Yoshiteru Nouchi

Shuuichi Tanaka

Shinya Umase

Ryouta Suzuki

Taishi Nakashima

Akira Komatsu

Toru Fujimoto

The present disclosure controls the supply of conditioned air to moderate the energy consumption by the heat source side in the supply of conditioned air using ducts in an air conditioning system. A heat exchanger unit includes a use side heat exchanger. A plurality of ducts distribute conditioned air that has passed through the use side heat exchanger of the heat exchanger unit. A plurality of fan units suction the conditioned air from the heat exchanger unit through the plurality of ducts, and supply the conditioned air to an air conditioned space. Each fan unit includes a fan motor that acts as an actuator configured to change an individual air supply amount of the conditioned air. A controller controls the plurality of fan motors to control the respective air supply amounts of the plurality of fan units.

Air conditioning system

An air supply system moderates excess energy consumption occurring in fans. A second unit includes a second fan that supplies first air to a target space. A duct sends the first air sent from a first unit by a first fan to the second unit. A remote sensor acting as a first detector detects information about second air in the target space. A main controller acting as a first controller communicates with the second unit and the remote sensor. The second unit includes a second detector that detects the air flow volume sent by the second fan, and a sub-controller acting as a second controller that controls the rotation speed of the second fan. The main controller determines a target air flow volume of the second unit on the basis of the information about the second air acquired from the remote sensor, and transmits an instruction indicating the target air flow volume to the sub-controller. The sub-controller controls the rotation speed of the second fan such that the air flow volume detected by the second detector approaches the target air flow volume.

Air supply system

A control load is reduced in a fan unit capable of controlling air flow volume. The rotation speed of a fan can be changed. An air flow volume detector detects air flow volume of the fan or equivalent air flow volume that is a physical quantity corresponding to the air flow volume of the fan. A unit casing houses, therein, the fan and the air flow volume detector. A fan controller, which is a controller, controls the rotation speed of the fan. The fan controller controls the rotation speed of the fan on the basis of a command value of the air flow volume of the fan given from outside the unit and a detected value of the air flow volume or the equivalent air flow volume detected by the air flow volume detector.

Fan unit, fan unit system, and air treatment system

In an air-conditioning system including an outside air processing device and an air-conditioning device, an operation of either one of the outside air processing device or the air-conditioning device is stopped if a temperature/humidity state that is at least either the temperature or humidity of air in a target space is within a predetermined range and if the load factor of at least one of the outside air processing device or the air-conditioning device is below a predetermined lower limit.

Air-conditioning system

Provided is an air conditioning system that uses ducts to supply conditioned air to a plurality of places inside a building, and is configured to counteract air backflow that occurs in ducts. A heat exchanger unit () includes a use side heat exchanger (). A plurality of ducts () are connected to the heat exchanger unit (). A plurality of fan units () suction conditioned air from the heat exchanger unit (), and supply the conditioned air to a plurality of air outlets () through the plurality of ducts (). A differential pressure sensor () acting as a detection device detects air backflow proceeding from at least one air outlet () among the plurality of air outlets () toward the heat exchanger unit () in a plurality of distribution flow paths including the plurality of ducts (), the plurality of fan units (), and the air outlets () of a plurality of outlet units ().

When an outdoor air handler performs a heating humidifying operation and an air conditioner performs a cooling operation, a control device adjusts at least one of a to-be-supplied air temperature of the outdoor air handler, a to-be-supplied air flow rate of the outdoor air handler, a to-be-supplied water flow rate of the outdoor air handler, and a cooling temperature that is a temperature at an air heat exchanger of the air conditioner. The control device adjusts the to-be-supplied air temperature and the cooling temperature on the basis of dehumidification information, operation information, temperature information, and humidity information. The operation information is information regarding an operating state of the air conditioner.

It is an object of the present disclosure to collectively control an outdoor air handler and an air conditioner optimally. An air-conditioning system () includes an outdoor air handler () configured to adjust a temperature and a humidity of taken-in outdoor air and supply the air to a target space (SP, SP), an air conditioner () configured to adjust a temperature of air in the target space (SP, SP), and a control unit (). The control unit () is configured to, in a case where one of the outdoor air handler () and the air conditioner () is in a non-temperature adjusting state in which the temperature of the air is not adjusted, change an air conditioning capacity of the other one of the outdoor air handler () and the air conditioner () compared with a case where the outdoor air handler () and the air conditioner () are in a temperature adjusting state in which the temperature of the air is adjusted.

Provided is an air conditioning system that achieves energy conservation and comfortableness. In the air conditioning system (), an outdoor-air conditioner () sucks outdoor-air (OA) and supplies the outdoor-air as supply air (SA) from an air handling unit (). An indoor-air conditioner () cools or heats indoor-air (IA) that is an air inside a target space (SP) by using an indoor unit () and supplies the air to the target space (SP). A general control unit () controls performs cooperative load control in which an operating capacity of the outdoor-air conditioner () and an operating capacity of the indoor-air conditioner () are controlled in cooperation in accordance with a status of the outdoor-air (OA), a status of the indoor-air (IA), an operation status of the outdoor-air conditioner (), and/or an operation status of the indoor-air conditioner (). The general control unit () controls, in the cooperative load control, at least one of a parameter of the outdoor-air conditioner () and a parameter of the indoor-air conditioner () such that a temperature or humidity of the indoor-air (IA) approaches a set value and also a total amount of power consumption of the outdoor-air conditioner () and power consumption of the indoor-air conditioner () is reduced.

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Osaka, Japan

Kouji Tatsumi