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 vent hole cleaning method for cleaning a vent hole provided on a molding surface of a mold for vulcanizing a rubber product includes a step of detecting a shape of the molding surface; a step of calculating a position of the vent hole by comparing the shape of the molding surface obtained in the step of detecting with molding surface information stored in a controlling device in advance and including a position of the vent hole; a step of moving a cleaning means to the vent hole based on the calculated position of the vent hole; and a step of cleaning the vent hole by the cleaning means.

An apparatus and a method for cleaning a cavity filled with a liquid are disclosed. An apparatus (1) for applying pulses of electromagnetic radiation to a cavity (2) filled with a liquid (3) may comprise a source (4, 4) for generating a first pulse and a second pulse of electromagnetic radiation and a control unit (22) adapted to control a time between the first pulse and the second pulse as a function of a diameter D and/or a cross-sectional area of the cavity (2).

A surface cleaning apparatus includes an upright body and a base adapted for movement across a surface to be cleaned, a fluid delivery system, and a recovery system. The surface cleaning apparatus can be configured to clean multiple surfaces, including hard and soft surfaces, and for different cleaning modes, including wet cleaning, dry vacuum cleaning, and self-cleaning. Methods for self-cleaning a surface cleaning apparatus are also provided.

Methods and systems for removing a gel from wellbore equipment. An example method includes introducing a cleaning fluid into the wellbore equipment comprising the gel disposed therein or thereon. The cleaning fluid includes a brine having a total dissolved solids concentration of between about 30K ppm to about 300K ppm. The method further includes contacting the gel with the cleaning fluid in the wellbore equipment, and removing the gel and the cleaning fluid from the wellbore equipment.

The present disclosure provides a surface cleaning apparatus that includes a housing including a base adapted for movement across a surface to be cleaned, a fluid delivery system, and a recovery system. The surface cleaning apparatus can be configured to clean multiple surfaces, including hard and soft surfaces, and apparatus is provided with a base adapted for movement across a surface to be cleaned, a brushroll removably mounted within the base, and a brushroll latch for securing the brushroll to the base. The brushroll latch can be captured by a portion of a nozzle assembly to prevent unintended release of the brushroll.

The present disclosure provides a surface cleaning apparatus that includes a housing including a base adapted for movement across a surface to be cleaned, a fluid delivery system, and a recovery system. The surface cleaning apparatus can be configured to clean multiple surfaces, including hard and soft surfaces, and for different cleaning modes, including wet cleaning, dry vacuum cleaning, and self-cleaning. Methods for self-cleaning a surface cleaning apparatus are also provided.

The present disclosure provides a surface cleaning apparatus that includes a housing including a base adapted for movement across a surface to be cleaned, a fluid delivery system, and a recovery system. The surface cleaning apparatus can be configured to clean multiple surfaces, including hard and soft surfaces, and for different cleaning modes, including wet cleaning, dry vacuum cleaning, and self-cleaning. Methods for self-cleaning a surface cleaning apparatus are also provided.

Provided is a sterilization kit for a water treatment apparatus. The sterilization kit for a water treatment apparatus, which supplies hot water to the water treatment apparatus, in which raw water supplied from the outside is purified by passing through a filter and discharged after being cooled or heated as occasion demands, to sterilize the water treatment apparatus includes a water inlet passage into which the raw water is introduced from the outside, a hot water module including a hot water tank in which the raw water introduced through the water inlet passage is received, a heat generation unit heating the water received in the hot water tank, and a controller disposed to be spaced apart from the outside of the hot water tank to control the heat generation unit, and a water outlet passage through which hot water heated in the hot water module is discharged to the water treatment apparatus. At least a portion of the water inlet passage passes through the controller and is heat-exchanged with the controller.

Disclosed are methods for cleaning of devices, such as heat exchangers, in particular to methods wherein machine learning systems, such as trained neural networks are used for indicating the fouling status the during the cleaning processes.