An outdoor unit is an outdoor unit to which a refrigerant pipe used to circulate refrigerant between an indoor unit and the outdoor unit, the outdoor unit including a compressor and an outdoor heat exchanger. The outdoor unit includes: a rectangular bottom panel disposed below the compressor and the outdoor heat exchanger, the rectangular bottom panel supporting the compressor and the outdoor heat exchanger; a peripheral panel disposed on a peripheral portion of the bottom panel and positioned upright on the bottom panel; a fixing panel disposed at a corner portion of the bottom panel to be located at an inner side of the peripheral panel and positioned upright on the bottom panel; and a valve which is fixed to the fixing panel and to which the refrigerant pipe is connected.

A heat source side unit for an air conditioning apparatus includes a machine room in which a compressor is accommodated, an air-sending unit room in which an air-sending unit is accommodated, a separator for partitioning a space into the machine room and the air-sending unit room, a reactor installed in the machine room, and a reactor mounting member fixed to the separator on a side of the machine room and on which the reactor is mounted, and the reactor mounting member includes a first mounting unit and a second mounting unit corresponding to each of the reactors with the sizes different from each other, and on the reactor mounting member, the reactor is selectively mounted on either one of the first mounting unit and the second mounting unit corresponding to the size of the reactor.

A heat source side unit for an air conditioning apparatus includes a machine room in which a compressor is accommodated, an air-sending unit room in which an air-sending unit is accommodated, a separator for partitioning a space into the machine room and the air-sending unit room, a reactor installed in the machine room, and a reactor mounting member fixed to the separator on a side of the machine room and on which the reactor is mounted, and the reactor mounting member includes a first mounting unit and a second mounting unit corresponding to each of the reactors with the sizes different from each other, and on the reactor mounting member, the reactor is selectively mounted on either one of the first mounting unit and the second mounting unit corresponding to the size of the reactor.

An outdoor cooling unit for vehicular air conditioning apparatus includes: a casing including an outlet section, inlet sections having an inlet plane inclined; a first heat exchanger facing one of the inlet sections and a second heat exchanger facing an other of the inlet sections; at least one propeller fan below the outlet section to blow out air upwardly. An angle formed between the normal line to the inlet plane and the z axis is an acute angle. Each of the blades includes a blade chord center point on an inner peripheral end thereof and an other blade chord center point on an outer peripheral end thereof, positioned so that a line segment connecting therebetween has an inclination to the outlet section proportionally to closeness to outer periphery of the blade. A blade chord center line forms a curve being convex toward the outlet section across the entire area.

An outdoor cooling unit for vehicular air conditioning apparatus includes: a casing including an outlet section, inlet sections having an inlet plane inclined; a first heat exchanger facing one of the inlet sections and a second heat exchanger facing an other of the inlet sections; at least one propeller fan below the outlet section to blow out air upwardly. An angle formed between the normal line to the inlet plane and the z axis is an acute angle. Each of the blades includes a blade chord center point on an inner peripheral end thereof and an other blade chord center point on an outer peripheral end thereof, positioned so that a line segment connecting therebetween has an inclination to the outlet section proportionally to closeness to outer periphery of the blade. A blade chord center line forms a curve being convex toward the outlet section across the entire area.

Disclosed herein is an air conditioner. The air conditioner includes a housing having an inlet and an outlet, and having a first guide surface forming the outlet and a second guide surface facing the first guide surface provided therein, a heat exchanger configured to heat-exchange air suctioned through the inlet, a blower fan configured to suction air from the inlet, heat-exchange the air by passing air through the heat exchanger, and discharge air toward the outlet, and an airflow control unit provided to be movable between a first position adjacent to one end portion of the outlet from which air is discharged and a second position spaced apart from the end portion of the outlet from which air is discharged, and protruding from the first guide surface or the second guide surface when the airflow control unit placed at the first

[00001]$\mathrm{position}.$

Disclosed herein is an air conditioner. The air conditioner includes a housing having an inlet and an outlet, and having a first guide surface forming the outlet and a second guide surface facing the first guide surface provided therein, a heat exchanger configured to heat-exchange air suctioned through the inlet, a blower fan configured to suction air from the inlet, heat-exchange the air by passing air through the heat exchanger, and discharge air toward the outlet, and an airflow control unit provided to be movable between a first position adjacent to one end portion of the outlet from which air is discharged and a second position spaced apart from the end portion of the outlet from which air is discharged, and protruding from the first guide surface or the second guide surface when the airflow control unit placed at the first

[00001]$\mathrm{position}.$

Provided is an outdoor unit of an air conditioner capable of obtaining efficient air blowing performance by optimizing a length dimension of a heat exchanger and a relative position of a blower. A front end portion is disposed closer to the left side panel than a rotation shaft of the first blower, and a rear end portion is disposed closer to the right side panel than a rotation shaft of the first blower in the first heat exchanger, and a front end portion is disposed closer to the right side panel than a rotation shaft of the second blower, and a rear end portion is disposed closer to the left side panel than a rotation shaft of the second blower in the second heat exchanger.

An external-air conditioning apparatus and a ventilation system are provided, the external-air conditioning apparatus includes a fin tube type heat exchanger and a housing that stores this heat exchanger. The housing includes a base body that serves as a back side of the apparatus body and a cover body that serves as a front side of the apparatus body, and the base body and the cover body are dividable and detachable in structure. The base body has a base portion, a partitioning portion, a connecting pipe portion, a heat-exchanger-holding structure portion, and a water receiving portion. The cover body is a structure in which a front wall portion and a three-side peripheral wall portion are formed integrally with each other, and a part in which the peripheral wall portion is not formed is an inlet for external air.

An air conditioning system, including a compressor, two outdoor heat exchange units, a liquid pipe used for communicating with indoor units, a high-pressure gas tube and a low-pressure gas tube; the air conditioning system further includes a valve assembly. One outdoor heat exchange unit has a first state in which one end thereof communicates with the high-pressure gas tube and another end thereof communicates with the liquid pipe, and has a second state in which one end thereof communicates with the low-pressure gas tube and the other end thereof communicates with the liquid pipe. Further disclosed is a control method for the air conditioning system.