An indoor unit includes: a blow-out port through which air is blown into a space to be air-conditioned; a refrigerant flow path through which flammable refrigerant gas flows; and a refrigerant detection sensor that detects the flammable refrigerant gas that leaks out of the refrigerant flow path. The refrigerant detection sensor faces the space. The refrigerant detection sensor includes a casing. The casing includes a gas intake port that takes in the flammable refrigerant gas. An outside-air-flow-area part of the refrigerant detection sensor is disposed outside of an air flow area through which the air blown through the blow-out port passes. The gas intake port is disposed on the outside-air-flow-area part.

Provided is an air conditioner including a variable air volume control device. The air conditioner includes: an indoor unit main body including a main outlet through which air is discharged; a blower placed in the indoor unit main body and blowing air toward the main outlet; and a controller adjusting a second discharge rate of air in an air cleaning mode independently of a first discharge rate of air in a heating or cooling mode, wherein the second discharge rate of air is varied within a range different from a range in which the first discharge rate of air is varied.

A wind direction adjusting apparatus of an air-conditioning blowout port is equipped with: a face plate portion which is disposed in the front of the air-conditioning blowout port from which the air conditioned by an air conditioner is blown out, and receives the air blown from the air-conditioning blowout port; a mounting portion which mounts the face plate portion forward of the air-conditioning blowout port; and an antibacterial member which is mounted to the face plate portion. The antibacterial member has: an antibacterial agent which is a material having bactericidal properties; a bag body which contains the antibacterial agent in a bag material with pores on the entire surface; and a housing which contains the bag body and has a vent hole that limits the ventilation volume of air blown out from the air-conditioning blowout port and passing through the bag body.

An air cleaning or purifying system includes a main air cleaner or purifier having an upper seating surface that is at least partially flat and at least one portable air purifier having a base configured to be seated on re lifted from the upper seating surface. The main air purifier and the portable air purifier may each have a filter and a fan. The air main and portable air purifiers may operate together. The portable air purifier may be moved to another room, or may be seated on the main air purifier such that various combinations of air purifying modes and air purifying capacities may be performed.

An air cleaning or purifying system includes a main air cleaner or purifier having an upper seating surface that is at least partially flat and at least one portable air purifier having a base configured to be seated on re lifted from the upper seating surface. The main air purifier and the portable air purifier may each have a filter and a fan. The air main and portable air purifiers may operate together. The portable air purifier may be moved to another room, or may be seated on the main air purifier such that various combinations of air purifying modes and air purifying capacities may be performed.

When a service technician or the like performs maintenance of a mechanism in an indoor unit, the service technician may accidentally detach a refrigerant gas sensor and the refrigerant gas sensor may be broken. To prevent this, communication pipes (regulating members) configured to regulate the detachment of a refrigerant gas sensor are provided on the side toward which the refrigerant gas sensor is detached (front side) when a casing provided on the side toward which the refrigerant gas sensor is detached (front side) is open.

Provided is an air conditioner including a variable air volume control device. The air conditioner includes: an indoor unit main body including a main outlet through which air is discharged; a blower placed in the indoor unit main body and blowing air toward the main outlet; and a controller adjusting a second discharge rate of air in an air cleaning mode independently of a first discharge rate of air in a heating or cooling mode, wherein the second discharge rate of air is varied within a range different from a range in which the first discharge rate of air is varied.

An air processing device includes: a casing; a component detachably provided on a body of the casing; and an imaging device that acquires image data of at least one predetermined object to be imaged in the casing. The imaging device is supported by the component so as to be located at a position at which the imaging device can image the object to be imaged.

An air processing device includes: a casing; a component detachably provided on a body of the casing; and an imaging device that acquires image data of at least one predetermined object to be imaged in the casing. The imaging device is supported by the component so as to be located at a position at which the imaging device can image the object to be imaged.

An air-conditioning apparatus indoor unit includes: a plastic design panel that includes a front panel part having a rectangular shape in front view and a flange part projecting toward a back surface from one longitudinal edge of the front panel part; and a reinforcement member that has a shape extending in the longitudinal direction of the front panel part across a middle part of the design panel and is fixed to the design panel so as to be in contact with a back surface of the front panel part and an inner surface of the flange part.