An outdoor unit of an air-conditioning apparatus in which indoor units are connected, includes: a housing forming an outer casing of the outdoor unit; a terminal block located at a side of the housing; and a conduit plate to be attached to the terminal block. The conduit plate includes: a terminal block cover to be attached to the housing to cover the terminal block, and having an opening portion formed at a lower portion of the terminal block cover; an outer casing cover to be attached to the terminal block cover to cover the opening portion of the terminal block cover, and having an opening portion at a side of the outer casing cover; and a cable connection cover to be attached to the side of the outer casing cover, and having attachment holes for connection of a conduit cable to be connected to the terminal block.

An outdoor unit of an air-conditioning apparatus in which indoor units are connected, includes: a housing forming an outer casing of the outdoor unit; a terminal block located at a side of the housing; and a conduit plate to be attached to the terminal block. The conduit plate includes: a terminal block cover to be attached to the housing to cover the terminal block, and having an opening portion formed at a lower portion of the terminal block cover; an outer casing cover to be attached to the terminal block cover to cover the opening portion of the terminal block cover, and having an opening portion at a side of the outer casing cover; and a cable connection cover to be attached to the side of the outer casing cover, and having attachment holes for connection of a conduit cable to be connected to the terminal block.

An electric control box includes an insulation inner shell and a fireproof outer shell. The insulation inner shell includes a first inner shell and a second inner shell that are assembled to each other. The fireproof outer shell includes a first outer shell and a second outer shell. The first outer shell covers the first inner shell, and the second outer shell covers the second inner shell.

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.

The present disclosure relates to an enclosure of a vapor compression system, where a component is disposed within the enclosure. The component is fluidly coupled to the vapor compression system and configured to discharge a flow of fluid. The enclosure includes a hole within a portion of the enclosure and a relief valve disposed within the hole of the enclosure, where the relief valve is configured to discharge the flow of fluid in a first direction through a passage within the relief valve. The passage extends from an interior region of the enclosure to an environment external of the enclosure. The relief valve is configured to block a second flow of fluid through the passage in a second direction, where the second direction is opposite of the first direction.

The present disclosure relates to an enclosure of a vapor compression system, where a component is disposed within the enclosure. The component is fluidly coupled to the vapor compression system and configured to discharge a flow of fluid. The enclosure includes a hole within a portion of the enclosure and a relief valve disposed within the hole of the enclosure, where the relief valve is configured to discharge the flow of fluid in a first direction through a passage within the relief valve. The passage extends from an interior region of the enclosure to an environment external of the enclosure. The relief valve is configured to block a second flow of fluid through the passage in a second direction, where the second direction is opposite of the first direction.

A heat exchanger includes: a heat exchanger body, the heat exchanger body being provided with first micro-channels and second micro-channels; and a header assembly, including a first header and a second header. The first header is provided with a first header channel which is used for providing a first refrigerant flow to the first micro-channels and/or collecting a first refrigerant flow flowing through the first micro-channels, and the second header is provided with a second header channel which is used for providing a second refrigerant flow to the second micro-channels and/or collecting a second refrigerant flow flowing through the second micro-channels, and heat is exchanged between the first refrigerant flow flowing through the first micro-channels and the second refrigerant flow flowing through the second micro-channels.

A heat exchanger includes: a heat exchanger body, the heat exchanger body being provided with first micro-channels and second micro-channels; and a header assembly, including a first header and a second header. The first header is provided with a first header channel which is used for providing a first refrigerant flow to the first micro-channels and/or collecting a first refrigerant flow flowing through the first micro-channels, and the second header is provided with a second header channel which is used for providing a second refrigerant flow to the second micro-channels and/or collecting a second refrigerant flow flowing through the second micro-channels, and heat is exchanged between the first refrigerant flow flowing through the first micro-channels and the second refrigerant flow flowing through the second micro-channels.

An air conditioning appliance includes a heat exchanger disposed within a housing. A compressor is in fluid communication with the heat exchanger. The compressor is operable to circulate refrigerant through the heat exchanger. A fan is disposed within the housing. The fan is operable to flow air over the heat exchanger. A circuit board is disposed within the housing, and a heat sink is mounted to the circuit board. The heat sink positioned such that the fan flows air over the heat sink during operation of the fan. A temperature sensor is disposed at one or both of the heat sink and the circuit board. A controller is in operative communication with the temperature sensor. The controller is configured to receive a signal from the temperature sensor corresponding to a temperature measurement and to activate an alert at least partially in response to the temperature measurement exceeding a temperature limit.

A refrigeration cycle apparatus (1) is capable of performing a refrigeration cycle using a small-GWP refrigerant. The refrigeration cycle apparatus (1) includes a refrigerant circuit (10) and a refrigerant enclosed in the refrigerant circuit (10). The refrigerant circuit includes a compressor (21), a condenser (23), a decompressing section (24), and an evaporator (31). The refrigerant contains at least 1,2-difluoroethylene.