Daikin Industries, Ltd.

Daikin Europe N.v.

Kousuke Hirai

Gakuto Sakai

Tooru Fujimoto

Yoshitaka Matsugi

Akiyoshi Yamamoto

Masaya Nishimura

David Steen

Keiya Nagahara

Takayuki Sunayama

Shougo Ohta

Jan Vanooteghem

Kenta Kobayashi

An air conditioning and ventilating system including: an air conditioning device including a heat exchanger configured to generate conditioned air by heat exchange with a refrigerant; a ventilation device communicatively connected to the air conditioning device and including a supply air fan and/or an exhaust fan; an airflow volume detection unit configured to detect an airflow volume equivalent value of the ventilation device; and a control unit. On determination that the airflow volume equivalent value acquired from the airflow volume detection unit is equal to or less than a first predetermined value, the control unit sets an operation of the air conditioning device to a stop state.

Air conditioning and ventilating system

A system includes an air conditioning device with a heat exchanger that sends conditioned air to an air conditioned space, a ventilation device that ventilates the air conditioned space, a refrigerant sensor that detects a concentration of a refrigerant in the air conditioned space, and a control unit that controls operations of the air conditioning device and ventilation device. On determination that the refrigerant concentration acquired from the refrigerant sensor exceeds a first predetermined value, the control unit sets an operation of a compressor of the air conditioning device to a stop state and sets the ventilation device to an operating state. On determination that the refrigerant concentration that has exceeded the first predetermined value becomes equal to or less than the first predetermined value, the control unit continues the stop state of the compressor and operating state of the ventilation device until a predetermined timing.

Air conditioning and ventilating system that enhance ventilation in response to a refrigerant leakage

A controlling unit controls a refrigerant circuit and a flow path switching mechanism to perform a first humidity control operation or a second humidity control operation. In the first humidity control operation, a bypass passage is closed, and outside air is supplied into a room through one of first and second adsorption heat exchangers, and room air is exhausted to outside through the other of the first and second adsorption heat exchangers. In the second humidity control operation, the bypass passage is opened, and the outside air is supplied into the room through one of the first and second adsorption heat exchangers and the bypass passage, and room air is exhausted to outside through the other of the first and second adsorption heat exchangers.

Humidity control apparatus with dual heat exchangers and bypass passage

In a system where a plurality of ventilation devices () are provided in one room, a control device () is provided to control, for the ventilation devices () operating, the number of the ventilation devices so that the detected values of the carbon dioxide sensors () are lower than the reference value.

Ventilation system

Internal control devices (A toD) included respectively in air conditioners (A toD) in an air conditioning system () are communicably connected one by one correspondingly to external control devices (A toD). Each of the external control devices (A toD) is configured to execute command generating operation of generating an operation command to a corresponding one of the air conditioners (A toD). The external control devices (A toD) constitute an external control system (). In the external control system (), one of the external control devices (A) functions as a master control device configured to execute the command generating operation whereas remaining ones of the external control devices (A toD) other than the external control device (A) functioning as the master control device function as sub control devices configured not to execute the command generating operation.

Air-conditioning system including a master and slave configuration

An air conditioning system includes: an air conditioner that generates conditioned air by heat exchange with a refrigerant and supplies the conditioned air to an air conditioning target space; a refrigerant sensor that detects refrigerant leakage; a ventilator that ventilates the air conditioning target space; and a controller. The ventilator includes: a total heat exchanger; a first air supply path and a first air exhaust path that connect the air conditioning target space and an outside of the air conditioning target space via the total heat exchanger; a second air supply path that connect the air conditioning target space and the outside of the air conditioning target space without passing through the total heat exchanger; an air supply fan that supplies air from the outside of the air conditioning target space into the air conditioning target space via the first air supply path and the second air supply path.

Growing community of inventors

Osaka, Japan

Kousuke Hirai