An air conditioner unit may include a housing, an outdoor heat exchanger assembly, an indoor heat exchanger assembly, a compressor, and a sterilization light assembly. The housing may define an indoor portion and an outdoor portion. The housing may further define an exhaust outlet downstream from the indoor portion to exhaust air therefrom. The sterilization light assembly may be disposed within the housing to transmit an ultraviolet light emission thereto. The sterilization light assembly may include a support board, an ultraviolet C (UVC) light source, and a lens casing. The UVC light source may be mounted to the support board and configured to emit radiation between 200 to 280 nanometers. The lens casing may be disposed over the support board and seal the UVC light source to prevent moisture from contacting the UVC light source.

An air conditioner unit may include a housing, an outdoor heat exchanger assembly, an indoor heat exchanger assembly, a compressor, and a sterilization light assembly. The housing may define an indoor portion and an outdoor portion. The housing may further define an exhaust outlet downstream from the indoor portion to exhaust air therefrom. The sterilization light assembly may be disposed within the housing to transmit an ultraviolet light emission thereto. The sterilization light assembly may include a support board, an ultraviolet C (UVC) light source, and a lens casing. The UVC light source may be mounted to the support board and configured to emit radiation between 200 to 280 nanometers. The lens casing may be disposed over the support board and seal the UVC light source to prevent moisture from contacting the UVC light source.

An air conditioner unit includes a housing defining an outdoor portion and an indoor portion. A makeup air intake duct and a makeup air exhaust duct are disposed above the housing. The air conditioner unit also includes an air to air heat exchanger. The air to air heat exchanger includes a first inlet side attached to the makeup air intake duct, a second inlet side, a first outlet side, and a second outlet side attached to the makeup air exhaust duct. The air to air heat exchanger also includes one or more alternating top layers and bottom layers. The one or more top layers are in fluid communication with the first inlet side and the first outlet side, and the one or more bottom layers are in fluid communication with the second inlet side and the second outlet side.

An air conditioner unit includes a housing defining an outdoor portion and an indoor portion. A makeup air intake duct and a makeup air exhaust duct are disposed above the housing. The air conditioner unit also includes an air to air heat exchanger. The air to air heat exchanger includes a first inlet side attached to the makeup air intake duct, a second inlet side, a first outlet side, and a second outlet side attached to the makeup air exhaust duct. The air to air heat exchanger also includes one or more alternating top layers and bottom layers. The one or more top layers are in fluid communication with the first inlet side and the first outlet side, and the one or more bottom layers are in fluid communication with the second inlet side and the second outlet side.

A turbo fan includes a hub for coupling a rotating shaft of a motor, a shroud, and a plurality of blades. Each blade includes an inner insertion portion disposed between the hub and the shroud, and an outer extension portion extending from the inner insertion portion and protruding beyond an outer circumference of the hub. Each blade has a positive pressure surface that includes a front surface facing toward a rotational direction and has a convex shape, and a negative pressure surface that includes a rear surface facing toward an opposite direction to the rotational direction and has a concave shape. Each blade further includes a first flow guide protrusion protruding from the positive pressure surface and arranged at an outer end of the outer extension portion, and extends from one side to the other side of the outer end of the outer extension portion in an axial direction.

An air conditioner unit includes a housing defining an outdoor portion and an indoor portion. A makeup air intake duct and a makeup air exhaust duct are disposed above the housing. The air conditioner unit also includes an air to air heat exchanger. The air to air heat exchanger includes a first inlet side attached to the makeup air intake duct, a second inlet side, a first outlet side, and a second outlet side attached to the makeup air exhaust duct. The air to air heat exchanger also includes one or more alternating top layers and bottom layers. The one or more top layers are in fluid communication with the first inlet side and the first outlet side, and the one or more bottom layers are in fluid communication with the second inlet side and the second outlet side.

An air conditioner unit may include a housing, an outdoor heat exchanger assembly, an indoor heat exchanger assembly, a compressor, a sterilization light assembly, and a flow sensor. The housing may define an indoor portion and an outdoor portion. The housing may further define an exhaust outlet downstream from the indoor portion to exhaust air therefrom. The sterilization light assembly may be disposed within the indoor portion to transmit an ultraviolet light emission thereto. The flow sensor may be disposed within the indoor portion upstream from the exhaust outlet. The flow sensor may be operably coupled to the sterilization light assembly and configured to activation of sterilization light assembly in response to detecting a predetermined airflow within the indoor portion.

An air conditioner unit may include a housing, an outdoor heat exchanger assembly, an indoor heat exchanger assembly, a compressor, a sterilization light assembly, and a flow sensor. The housing may define an indoor portion and an outdoor portion. The housing may further define an exhaust outlet downstream from the indoor portion to exhaust air therefrom. The sterilization light assembly may be disposed within the indoor portion to transmit an ultraviolet light emission thereto. The flow sensor may be disposed within the indoor portion upstream from the exhaust outlet. The flow sensor may be operably coupled to the sterilization light assembly and configured to activation of sterilization light assembly in response to detecting a predetermined airflow within the indoor portion.

An air conditioner unit may include a housing, an outdoor heat exchanger assembly, an indoor heat exchanger assembly, a compressor, and a sterilization light assembly. The housing may define an indoor portion and an outdoor portion. The housing may further define an exhaust outlet downstream from the indoor portion to exhaust air therefrom. The sterilization light assembly may be disposed within the housing to transmit an ultraviolet light emission thereto. The sterilization light assembly may include a support board, an ultraviolet C (UVC) light source, and a lens casing. The UVC light source may be mounted to the support board and configured to emit radiation between 200 to 280 nanometers. The lens casing may be disposed over the support board and seal the UVC light source to prevent moisture from contacting the UVC light source.

An air conditioner unit may include a housing, an outdoor heat exchanger assembly, an indoor heat exchanger assembly, a compressor, and a sterilization light assembly. The housing may define an indoor portion and an outdoor portion. The housing may further define an exhaust outlet downstream from the indoor portion to exhaust air therefrom. The sterilization light assembly may be disposed within the housing to transmit an ultraviolet light emission thereto. The sterilization light assembly may include a support board, an ultraviolet C (UVC) light source, and a lens casing. The UVC light source may be mounted to the support board and configured to emit radiation between 200 to 280 nanometers. The lens casing may be disposed over the support board and seal the UVC light source to prevent moisture from contacting the UVC light source.