An indoor heat exchanger includes a heat exchanger shell, a side plate structure including shell side plates arranged at both ends of the heat exchanger shell, heat exchange fins installed at the shell side plates provided in the heat exchanger shell, refrigerant pipes passing through the heat exchange fins, and connection pipes protruding from an end of the heat exchanger shell and each connected to ends of two refrigerant pipes on same side.

An indoor heat exchanger includes a heat exchanger shell, a side plate structure including shell side plates arranged at both ends of the heat exchanger shell, heat exchange fins installed at the shell side plates provided in the heat exchanger shell, refrigerant pipes passing through the heat exchange fins, and connection pipes protruding from an end of the heat exchanger shell and each connected to ends of two refrigerant pipes on same side.

An air conditioning apparatus includes an outdoor unit configured to circulate refrigerant, an indoor unit configured to circulate water, and a heat exchange device that connects the indoor unit to the outdoor unit and that is configured to perform heat exchange between the refrigerant and the water. The heat exchange device includes a first heat exchanger and a second heat exchanger, a first refrigerant pipe and a second refrigerant pipe that are connected to the first heat exchanger, a third refrigerant pipe and a fourth refrigerant pipe that are connected to the second heat exchanger, a first expansion valve disposed at the second refrigerant pipe, a second expansion valve disposed at the fourth refrigerant pipe, a bypass pipe that connects the second refrigerant pipe to the third refrigerant pipe, and a bypass valve disposed at the bypass pipe.

An indoor unit (1000) of an air conditioner includes a housing (100) having an upper base plate (110) provided with an air inlet (101), a lower base plate (120) detachably mounted to the upper base plate (110) and provided with an air outlet, and a front cover (130) detachably mounted to the upper base plate (110); a heat exchanger (140) mounted on the upper base plate (110); a fan (142) detachably mounted to the lower base plate (120); and a thrust structure (340) having a body (350) that is disposed to a rear portion of the indoor unit (1000) and has a thrust face (351) abutting against a mounting member to limit a degree of freedom of upward movement of the indoor unit (1000).

An indoor unit (1000) of an air conditioner includes a housing (100) having an upper base plate (110) provided with an air inlet (101), a lower base plate (120) detachably mounted to the upper base plate (110) and provided with an air outlet, and a front cover (130) detachably mounted to the upper base plate (110); a heat exchanger (140) mounted on the upper base plate (110); a fan (142) detachably mounted to the lower base plate (120); and a thrust structure (340) having a body (350) that is disposed to a rear portion of the indoor unit (1000) and has a thrust face (351) abutting against a mounting member to limit a degree of freedom of upward movement of the indoor unit (1000).

An indoor unit of an air-conditioning apparatus includes a fan unit having an axial fan and a motor that drives the axial fan. The indoor unit also includes a pair of support arms on a back plate constituting a back surface of a casing. The fan unit is supported by the pair of support arms from the below.

An indoor unit of an air-conditioning apparatus includes a fan unit having an axial fan and a motor that drives the axial fan. The indoor unit also includes a pair of support arms on a back plate constituting a back surface of a casing. The fan unit is supported by the pair of support arms from the below.

An apparatus includes a drain pan configured to receive liquid condensate from a horizontal evaporator coil above the drain pan and a drain pan extension coupled to the drain pan. A pin on the front and rear sides of the drain pan extension is fitted and movable within a corresponding notch in the front and rear sides of the drain pan. The drain pan extension is securably configurable in a first configuration and a second configuration. In the first configuration, the drain pan extension extends above the drain pan at a first angle relative to the drain pan. In the second configuration, at least a portion of the drain pan extension extends beyond the left pan side of the drain pan at a second angle, which may be selected for improved capture of liquid condensate from the horizontal evaporator coil.

A single-package air conditioner unit may include, a housing, an outdoor heat exchanger assembly, an indoor heat exchanger assembly, a compressor, an electronics casing, and an electronics board. The housing may define an outdoor portion and an indoor portion. The outdoor heat exchanger assembly may be disposed in the outdoor portion and include an outdoor heat exchanger and an outdoor fan. The indoor heat exchanger assembly may be disposed in the indoor portion and include an indoor heat exchanger and an indoor fan. The compressor may be in fluid communication with the outdoor heat exchanger and the indoor heat exchanger to circulate a refrigerant between the outdoor heat exchanger and the indoor heat exchanger. The electronics casing may be disposed in the outdoor portion apart from the outdoor heat exchanger. The electronics casing may define a board chamber in which the electronics board may be mounted.

A single-package air conditioner unit may include, a housing, an outdoor heat exchanger assembly, an indoor heat exchanger assembly, a compressor, an electronics casing, and an electronics board. The housing may define an outdoor portion and an indoor portion. The outdoor heat exchanger assembly may be disposed in the outdoor portion and include an outdoor heat exchanger and an outdoor fan. The indoor heat exchanger assembly may be disposed in the indoor portion and include an indoor heat exchanger and an indoor fan. The compressor may be in fluid communication with the outdoor heat exchanger and the indoor heat exchanger to circulate a refrigerant between the outdoor heat exchanger and the indoor heat exchanger. The electronics casing may be disposed in the outdoor portion apart from the outdoor heat exchanger. The electronics casing may define a board chamber in which the electronics board may be mounted.