A kitchen hood has a first housing and a second housing that slides into and out of the first housing to adjust a length of the kitchen hood. The first housing has a fan to suction air, an outlet, and an air quality sensor assembly to continuously detect air quality in a kitchen. The second housing has an inlet and suction grill through which air is suctioned, a steam cleaning assembly to automatically steam clean an interior of the kitchen hood, and a height sensing assembly to sense a height of cookware seated on a cooktop surface below the second housing. The kitchen hood may be lengthened or shortened based on the sensed height of the cookware, and a speed of the fan and the height of the kitchen hood may be automatically adjusted based on detections by the air quality sensor assembly.

In one embodiment, a method for controlling air quality in an unenclosed kitchen environment by a ventilation system includes determining an environmental state of the kitchen environment based on sensor data from sensors associated with the ventilation system, determining a current air quality of the kitchen environment based on the sensor data, determining adjustments for system-boundaries or air-manipulating devices associated with the ventilation system based on the current air quality and the environmental state, wherein the adjustments are configured to facilitate a target air quality of the kitchen environment; and adjusting the system-boundaries or air-manipulating devices associated with the ventilation system based on the determined adjustments.

A portable hood may include a base, a head, a column, and a roll filter unit. The roll filter unit may include a purification filter installed in the head and discharged to an outside of the head after moving past a suction inlet. Accordingly, one of purification filters, for example, an oil mist filter, may be provided as a roll filter, so cleanliness, maintenance, and replacement of the filter is easy.

The present invention discloses a lifting mechanism for a moving component of a range hood and a range hood with the same, which comprises a mounting frame, a moving component, a motor, a transmission mechanism, two lifting rods, a connecting member and two guide rails. The transmission mechanism moves the connecting member up and down along the guide rails, so that the lifting rods and the moving component are allowed to move up and down. The power for the lifting motion is provided by the transmission mechanism, the guide rails on two sides ensure the stability of the lifting motion, and the lifting rods fixed on two sides of the connecting member further transfers the motion downward to the smoke guide plate, so that the lifting motion of the smoke guide plate is very stable.

A portable hood may include a base, a head, a column, and a fan. The head may introduce air thereinto and discharge the introduced air to the outside. The column may be coupled eccentrically to a side of the head in a horizontal direction. Further, the fan may be located inside of the head such that the fan is eccentric to the head toward the column.

A kitchen hood has a first housing and a second housing that slides into and out of the first housing to adjust a length of the kitchen hood. The first housing has a fan to suction air, an outlet, and an air quality sensor assembly to continuously detect air quality in a kitchen. The second housing has an inlet and suction grill through which air is suctioned, a steam cleaning assembly to automatically steam clean an interior of the kitchen hood, and a height sensing assembly to sense a height of cookware seated on a cooktop surface below the second housing. The kitchen hood may be lengthened or shortened based on the sensed height of the cookware, and a speed of the fan and the height of the kitchen hood may be automatically adjusted based on detections by the air quality sensor assembly.

A range hood includes a body having a space formed therein, and multiple grooves are formed in the inside of the space. The body includes an opening in the underside thereof. The opening communicates with the space. A case includes multiple rails which are slidably located in the grooves. A frame is located in the space and includes a blower. A driving unit is located in the space and connected to the case so as to lift and lower the case by moving the rails along the grooves.

An exhaust canopy comprising: a stationary portion adapted for mounting on a stationary object, above cooking equipment; an exhaust portion for removing or filtering cooking effluent or fluids, the exhaust portion being adjustably connected, directly or indirectly, with the stationary portion or the stationary object; and an adjustment mechanism for moving the exhaust portion with respect to the stationary portion or the stationary object; wherein the exhaust canopy is adjustable between a first configuration in which the exhaust portion is raised, retracted or withdrawn and a second configuration in which the exhaust portion is lowered, protracted, or extended.

Disclosed is an induction ventilation system for air supply and exhaust, including: an upper plate that has an induction heating portion thereon and a lift hole in a rear portion thereof; a vertically movable unit that moves up and down through the lift hole and is equipped with a filter; an air suction and discharge unit including a chamber with an oil drain hole, a flexible duct connected between the vertically movable unit and the chamber, an air suction fan, and a discharge pipe through which indoor air drawn by the air suction fan is discharged outside; a grease tray installed under the chamber to collect grease that is condensed on the surface of an air suction passage; and an air supply hood that guides the indoor air to the air suction passage by supplying air to the upper plate using an air supply fan.

A hood system including a main body comprising an exhaust duct, a fan configured to generate airflow in the exhaust duct, an arm including an intake port and configured to allow air to be sucked into the intake port so as to pass through the arm and thereafter in the exhaust duct, a driving unit configured to be driven to move the arm, a sensor module configured to sense an environmental state of the hood system, and at least one processor configured to control driving of the driving unit based on the sensed environmental state to move the arm and thereby position the intake port based on the sensed environmental state.