The air conditioner apparatus according to the present invention includes: a case which forms a first common passage, and a second common passage; and a suction guide which is disposed in each of the first common passage and the second common passage, which guides air flown into the case to a first desiccant heat exchanger which is disposed in the first common passage or a second desiccant heat exchanger which is disposed in the second common passage, and which forms a compressor accommodation chamber where a compressor is accommodated, wherein at least two cooling holes for sending some of the air flown into the case to the compressor accommodation chamber and for sending air flowing inside the compressor accommodation chamber to the first common passage or the second common passage are formed in the suction guide.

A rotor includes a rotor core having an outer circumference extending in a circumferential direction about an axis, and having a magnet insertion hole along the outer circumference, and a permanent magnet disposed in the magnet insertion hole. The rotor core has a plurality of slits formed on an outer side of the magnet insertion hole in a radial direction about the axis, and a bridge extending to connect an inner side and an outer side of the magnet insertion hole in the radial direction. The plurality of slits have a first slit closest to an end of the magnet insertion hole in the circumferential direction, and a second slit closest to the bridge. When T1 represents a shortest distance from the magnet insertion hole to the first slit and R1 represents a shortest distance from the reference point to the second slit, R1>T1 is satisfied.

A rotor includes a rotor core having an outer circumference extending in a circumferential direction about an axis, and having a magnet insertion hole along the outer circumference, and a permanent magnet disposed in the magnet insertion hole. The rotor core has a plurality of slits formed on an outer side of the magnet insertion hole in a radial direction about the axis, and a bridge extending to connect an inner side and an outer side of the magnet insertion hole in the radial direction. The plurality of slits have a first slit closest to an end of the magnet insertion hole in the circumferential direction, and a second slit closest to the bridge. When T1 represents a shortest distance from the magnet insertion hole to the first slit and R1 represents a shortest distance from the reference point to the second slit, R1>T1 is satisfied.

A constant temperature air circulation system is provided. Air valves are installed behind two three-way nodes of a main circulation loop and parallel bypasses to adjust a flowing amount of gas of each branch. When a compressor keeps a current state unchanged, a draught fan and air valves do not change. When the compressor needs to be turned on and then to be turned off, an air volume of the draught fan is adjusted, and the flowing amounts of the bypasses and a main circuit are simultaneously adjusted until the air valves that control a flowing amount of an evaporator are all closed and the air valves of the bypasses are all opened. Adjustment of the air valves and state switching of the compressor are made at the same time, so that the flowing amount flowing through a heater to a chamber is ensured to always remain unchanged.

A constant temperature air circulation system is provided. Air valves are installed behind two three-way nodes of a main circulation loop and parallel bypasses to adjust a flowing amount of gas of each branch. When a compressor keeps a current state unchanged, a draught fan and air valves do not change. When the compressor needs to be turned on and then to be turned off, an air volume of the draught fan is adjusted, and the flowing amounts of the bypasses and a main circuit are simultaneously adjusted until the air valves that control a flowing amount of an evaporator are all closed and the air valves of the bypasses are all opened. Adjustment of the air valves and state switching of the compressor are made at the same time, so that the flowing amount flowing through a heater to a chamber is ensured to always remain unchanged.

An integrated air conditioner comprises: a housing partitioned into a first housing on the upper side thereof and a second housing on the lower side thereof, wherein the first housing has a first intake port through which external air is introduced thereinto and a first exhaust port through which internal air is exhausted therefrom, and the second housing has a second intake port through which external air is introduced thereinto and a second exhaust port through which internal air is exhausted therefrom; a compressor provided in the interior of the housing to compress a refrigerant; a condenser that is provided on a second fluid channel, which connects the second intake port and the second exhaust port, and condenses the compressed refrigerant, supplied from the compressor, into a liquid phase; an expansion unit that expands the refrigerant, condensed in the condenser, into a low-pressure refrigerant; and an evaporator.

An integrated air conditioner comprises: a housing partitioned into a first housing on the upper side thereof and a second housing on the lower side thereof, wherein the first housing has a first intake port through which external air is introduced thereinto and a first exhaust port through which internal air is exhausted therefrom, and the second housing has a second intake port through which external air is introduced thereinto and a second exhaust port through which internal air is exhausted therefrom; a compressor provided in the interior of the housing to compress a refrigerant; a condenser that is provided on a second fluid channel, which connects the second intake port and the second exhaust port, and condenses the compressed refrigerant, supplied from the compressor, into a liquid phase; an expansion unit that expands the refrigerant, condensed in the condenser, into a low-pressure refrigerant; and an evaporator.

An air conditioning appliance defining a vertical direction includes a housing comprising a wall disposed in the vertical direction, the wall defining an opening therethrough; a heat exchanger disposed in the housing; a compressor in fluid communication with the heat exchanger to circulate a refrigerant through the heat exchanger; and a door assembly attached to the wall proximal to the opening. The door assembly includes a frame removably secured to the wall and surrounding the opening, the frame comprising a tab protruding from a first surface of the frame and extending in the vertical direction, and a door pivotably connected to the frame, the door defining an aperture into which the tab is received. The tab is symmetrical about a horizontal centerline of the tab.

An air conditioning appliance defining a vertical direction includes a housing comprising a wall disposed in the vertical direction, the wall defining an opening therethrough; a heat exchanger disposed in the housing; a compressor in fluid communication with the heat exchanger to circulate a refrigerant through the heat exchanger; and a door assembly attached to the wall proximal to the opening. The door assembly includes a frame removably secured to the wall and surrounding the opening, the frame comprising a tab protruding from a first surface of the frame and extending in the vertical direction, and a door pivotably connected to the frame, the door defining an aperture into which the tab is received. The tab is symmetrical about a horizontal centerline of the tab.

A method for installing a universal air handler for a building air conditioning system includes installing a compact outdoor cabinet having a blower and separate intake and outlet chambers separated by an evaporator core. Cool and return air ducts from the building couple to each chamber. Return air drawn by the blower into the return air chamber passes across the evaporator, then through the blower and out through the cool air duct. Coolant lines couple the evaporator to a nearby stand-alone condenser/compressor unit. In one embodiment, an adapter enables stacking the condenser/compressor unit atop the cabinet to reduce the footprint of the combination. In another embodiment, a manifold couples permanently to the building air ducts and releasably couples to the cabinet. The universal air handler easily decouples from the manifold for transportation and maintenance. The manifold may be installed in various locations around the building, including on the roof.