Abstract: Proposed are a directional airflow device and an air cleaner with the same. The directional airflow device includes: a cylindrical fan accommodating portion (140) including a fan assembly (150) that is configured to generate a flow of air; and a cylindrical guide accommodating portion (160) integrally formed on the fan accommodating portion (140), and including an airflow forming member (170) that is configured to discharge air suctioned by the fan assembly and guided to an airflow forming space, through a discharge port, wherein the airflow forming member is configured such that at least two helical bodies having different pitches are arranged in the airflow forming space along a circumferential direction of the guide accommodating portion, so that a part of the helical bodies forms a directional airflow having straightness, and a remaining part discharges air radially.

Abstract: A centrifugal fan is provided that includes a main plate configured to be rotated about a rotational axis, a shroud, having a suction opening, and a plurality of blades arranged in a circumferential direction between the main plate and the shroud to allow air suctioned in through the suction opening to flow from a front edge to a rear edge of each blade. Assuming a first cross section, a second cross section, a third cross section, and a fourth cross section of each blade sequentially taken at layers from the shroud to the main plate, a front edge of the first cross section is located farther from the rotational axis than a front edge of the fourth cross section, and a rear edge of the first cross section is located closer to the rotational axis than a rear edge of the fourth cross section.

Abstract: A centrifugal fan is provided that includes a main plate configured to be rotated about a rotational axis, a shroud, having a suction opening through which air is suctioned in, and a plurality of blades arranged in a circumferential direction between the main plate and the shroud to allow the air suctioned in through the suction opening to flow from a front edge to a rear edge of each blade. Assuming a first cross section, a second cross section, a third cross section, and a fourth cross section of each blade sequentially taken at layers from the shroud to the main plate, a front edge of the first cross section is located farther from the rotational axis than a front edge of the fourth cross section, and a rear edge of the first cross section is located closer to the rotational axis than a rear edge of the fourth cross section.

Abstract: The present invention relates to a ventilating apparatus and to a method for controlling the ventilating apparatus. More particularly, the present invention relates to a ventilating apparatus comprising a humidifying unit having an antibiotic function, as well as to a method for controlling the ventilating apparatus.

Abstract: A ventilation device and a controlling method of the same are provided. The ventilation device may include a humidifier having improved humidification efficiency and improved durability.

Abstract: The present invention relates to a ventilating apparatus and to a method for controlling the ventilating apparatus. More particularly, the present invention relates to a ventilating apparatus comprising a humidifying unit having an antibiotic function, as well as to a method for controlling the ventilating apparatus.

Abstract: The present invention may relate to a humidifying unit. More particularly, the present invention may relate to a humidifying unit with improved humidifying efficiency and increased durability, and to a ventilating apparatus comprising the same.

Abstract: A ventilation device and a controlling method of the same are provided. The ventilation device may include a humidifier having improved humidification efficiency and improved durability.