In order to quickly condition a room by blowing conditioned air from an air blowing opening over a wide range, a fixed air blowing portion 75 is disposed at a central portion in a raised portion 740 in which a part of a decorative panel 70 is raised toward the air conditioning room. Movable air blowing portions 77 are disposed on both sides thereof. The movable air blowing portion 77 is rotatable within a predetermined angle range around an axis orthogonal to the panel surface of the decorative panel 70 or to the ceiling surface, while air blowing openings 754 and 783 are formed on each side surface of the fixed air blowing portion 75 and the movable air blowing portion 77. As a result, the conditioned air is blown out in a wide range in the horizontal direction from the air blowing opening 783 as the movable air blowing portion 77 rotates.

In order to quickly condition a room by blowing conditioned air from an air blowing opening over a wide range, a fixed air blowing portion 75 is disposed at a central portion in a raised portion 740 in which a part of a decorative panel 70 is raised toward the air conditioning room. Movable air blowing portions 77 are disposed on both sides thereof. The movable air blowing portion 77 is rotatable within a predetermined angle range around an axis orthogonal to the panel surface of the decorative panel 70 or to the ceiling surface, while air blowing openings 754 and 783 are formed on each side surface of the fixed air blowing portion 75 and the movable air blowing portion 77. As a result, the conditioned air is blown out in a wide range in the horizontal direction from the air blowing opening 783 as the movable air blowing portion 77 rotates.

A comfort cassette (1) and a method for control thereof, wherein the comfort cassette (1) comprises a pressure box (2) with an inlet (3) and a plurality of outlets (4) for through flow of a supply air flow (L1). The outlets (4) are arranged at more than two of the pressure box edges (5a, 5b, . . . 5n) and the outlets form a group (6a, 6b, . . . 6n) of outlets per edge (5a, 5b, . . . 5n). The outlets are arranged in a configuration which is changeable by that at least one cover member (8) when displaced in relation to the outlets. The cover member (8) is arranged to change simultaneously the configuration of all groups (6a, 6b, . . . 6n) of the outlets (4), by movement of the cover member (8) in only one direction, while the supply air flow (L1) is changeable in more than two directions by only one movement of the cover member.

An example heat pump system includes a low-height cabinet configured to be mounted to a ceiling. The low-height cabinet includes a frame and a plurality of panels that define a compressor compartment, a blower compartment, and a plenum compartment. The frame includes one or more dividers that separate the blower compartment, the plenum compartment, and the compressor compartment from each other. The example heat pump system also includes a compressor installed horizontally in the compressor compartment, a heat exchanger installed vertically in the compressor compartment, a blower assembly installed in the blower compartment, and an air coil installed in the blower compartment.

An example heat pump system includes a low-height cabinet configured to be mounted to a ceiling. The low-height cabinet includes a frame and a plurality of panels that define a compressor compartment, a blower compartment, and a plenum compartment. The frame includes one or more dividers that separate the blower compartment, the plenum compartment, and the compressor compartment from each other. The example heat pump system also includes a compressor installed horizontally in the compressor compartment, a heat exchanger installed vertically in the compressor compartment, a blower assembly installed in the blower compartment, and an air coil installed in the blower compartment.

An impeller includes a main plate, an annular side plate and blades. The blades each have: an inner circumferential end; an outer circumferential end; a sirocco blade portion formed as a forward-swept blade portion, and having an outlet angle that is greater than 90 degrees; and a turbo blade portion formed as a swept-back blade portion and including the inner circumferential end. The blades include a first blade portion and a second blade portion that are provided on respective sides of the main plate. The impeller including a region in which a first inter-blade distance is greater than a second inter-blade distance, where an inlet-blade distance is a distance between any adjacent two of the blades in the circumferential direction, the first inter-blade distance is the inter-blade distance of the first blade portion, and the second inter-blade distance is the inter-blade distance of the second blade portion.

An impeller includes a main plate, an annular side plate and blades. The blades each have: an inner circumferential end; an outer circumferential end; a sirocco blade portion formed as a forward-swept blade portion, and having an outlet angle that is greater than 90 degrees; and a turbo blade portion formed as a swept-back blade portion and including the inner circumferential end. The blades include a first blade portion and a second blade portion that are provided on respective sides of the main plate. The impeller including a region in which a first inter-blade distance is greater than a second inter-blade distance, where an inlet-blade distance is a distance between any adjacent two of the blades in the circumferential direction, the first inter-blade distance is the inter-blade distance of the first blade portion, and the second inter-blade distance is the inter-blade distance of the second blade portion.

An example heat pump system includes a low-height cabinet configured to be mounted to a ceiling. The low-height cabinet includes a frame and a plurality of panels that define a compressor compartment, a blower compartment, and a plenum compartment. The frame includes one or more dividers that separate the blower compartment, the plenum compartment, and the compressor compartment from each other. The example heat pump system also includes a compressor installed horizontally in the compressor compartment, a heat exchanger installed vertically in the compressor compartment, a blower assembly installed in the blower compartment, and an air coil installed in the blower compartment.

An example heat pump system includes a low-height cabinet configured to be mounted to a ceiling. The low-height cabinet includes a frame and a plurality of panels that define a compressor compartment, a blower compartment, and a plenum compartment. The frame includes one or more dividers that separate the blower compartment, the plenum compartment, and the compressor compartment from each other. The example heat pump system also includes a compressor installed horizontally in the compressor compartment, a heat exchanger installed vertically in the compressor compartment, a blower assembly installed in the blower compartment, and an air coil installed in the blower compartment.

An air conditioner including: a housing communicating with a space in which a window covering is installed, and including a suction port through which air is suctioned from the space and a discharge port through which air is discharged into an indoor area; a heat exchanger configured to exchange heat with the air suctioned through the suction port; a blower fan allowing air to be suctioned through the suction port or allowing air to be discharged through the discharge port; and a guide panel provided at the suction port to guide the window covering to prevent the window covering from covering the suction port.