Disclosed herein are an air conditioner includes a housing having an outlet, and a blade configured to open and close the outlet and having a plurality of holes. The blade includes a first side extending in a first direction, a second side extending in a second direction, and a block area in which none of the plurality of holes are formed, at least a number of the plurality of holes are disposed on a first line extending in the first direction, and a second line spaced in the second direction from the first line, respectively, where the second line extends in the first direction, and the block area comprises an area formed in the first direction between the first line and the second line.

Disclosed herein are an air conditioner includes a housing having an outlet, and a blade configured to open and close the outlet and having a plurality of holes. The blade includes a first side extending in a first direction, a second side extending in a second direction, and a block area in which none of the plurality of holes are formed, at least a number of the plurality of holes are disposed on a first line extending in the first direction, and a second line spaced in the second direction from the first line, respectively, where the second line extends in the first direction, and the block area comprises an area formed in the first direction between the first line and the second line.

Provided is a register that can more surely suppress abnormal noise caused by air passing through a space between a damper and a retainer. An inner wall of an upper side wall of the retainer is formed with a plurality of rib parts provided on a downstream side relative to an outer periphery on the downstream side of a plate member in a closed state of a damper. The plurality of rib parts is arranged in a direction parallel to a turning axis of the damper, and adjacent rib parts are formed into different shapes. A soft seal member is provided with a plurality of protrusion parts on an upper surface of the outer periphery on the downstream side of the plate member.

Provided is a register that can more surely suppress abnormal noise caused by air passing through a space between a damper and a retainer. An inner wall of an upper side wall of the retainer is formed with a plurality of rib parts provided on a downstream side relative to an outer periphery on the downstream side of a plate member in a closed state of a damper. The plurality of rib parts is arranged in a direction parallel to a turning axis of the damper, and adjacent rib parts are formed into different shapes. A soft seal member is provided with a plurality of protrusion parts on an upper surface of the outer periphery on the downstream side of the plate member.

An air conditioner indoor unit includes a back plate assembly, a top cover assembly having a part connected to a top wall of the back plate assembly, and a panel assembly. The panel assembly includes a first panel connected to the back plate assembly and including a first air outlet and a second air outlet arranged below the first air outlet, a second panel disposed below the first panel, a door mounting plate disposed at rear of the first panel and including a guiding groove, a door coupled to the door mounting plate and movable relative to the door mounting plate to open or close the first air outlet, and a guiding post arranged at the door and configured to extend into and slide relative to the guiding groove. The back plate assembly, the top cover assembly, the first panel, and the second panel are connected one to another.

An air management device may include three independently operated primary impellers 131, 131′, 131″, and drawn-in air is discharged through discharge ports 15′-1, 15′-2, 15′-3 provided in the front plate 15 of the housing 10. Louvers 141, 142, 143installed downstream of the air flow and discharge ports 15′-1, 15′-2, 15′-3 may be independently opened or closed to provide discharge of the air to the surrounding environment. Further, at least one retractable or pop-up fan may be provided. A bottom inlet 11′ may be formed on the bottom plate 11 of the housing 10 facing the floor of the living space above a predetermined distance. The replaceable filter 300 may be installed to filter the air sucked through the bottom inlet 11′, and may be drawn in and out of the housing 10.

An air management device may include three independently operated primary impellers 131, 131′, 131″, and drawn-in air is discharged through discharge ports 15′-1, 15′-2, 15′-3 provided in the front plate 15 of the housing 10. Louvers 141, 142, 143installed downstream of the air flow and discharge ports 15′-1, 15′-2, 15′-3 may be independently opened or closed to provide discharge of the air to the surrounding environment. Further, at least one retractable or pop-up fan may be provided. A bottom inlet 11′ may be formed on the bottom plate 11 of the housing 10 facing the floor of the living space above a predetermined distance. The replaceable filter 300 may be installed to filter the air sucked through the bottom inlet 11′, and may be drawn in and out of the housing 10.

A cooling system (100) has a housing (101), a heat exchanger (110) and an air distribution controller (120). The housing (101) including an inlet (102) for receiving air exhausted from the server module and an outlet (103) for providing air to the server module. The heat exchanger (110) is mounted between the inlet (102) and the outlet (103), the heat exchanger (110) is configured that a refrigerant (111) contained in the heat exchanger (110) exchanges heat with air passing through the heat exchanger (110). The heat exchanger (110) accepts variation of the refrigerant liquid level. The air distribution controller (120) is mounted in an inlet side of the heat exchanger (110). The air distribution controller (120) has a movable plate which allows an airflow profile from the inlet to the heat exchanger (110) redirected. The air distribution controller (120) controls the airflow profile depending on the liquid level.

The present invention provides a versatile and enhanced performance volume damper apparatus for the HVAC industry. In particular, the present invention provides ease of installation in the air supply boot or pipe or duct of a new HVAC system or for retrofit applications where an existing volume damper has failed or is ineffective. The present invention is not restricted by the geometry of the HVAC structures at the site of the installation. Once installed, the operation of the present invention offers an ease of adjustment for balancing an HVAC system and a locking mechanism for the reliable maintenance of the desired air flow. Further, the present invention allows the adjustment and re-adjustment of air flow in the HVAC system as required for the comfortable operation of the system and provides a level of precision in setting the volume of air flow which is unattainable by standard means.

The present invention provides a versatile and enhanced performance volume damper apparatus for the HVAC industry. In particular, the present invention provides ease of installation in the air supply boot or pipe or duct of a new HVAC system or for retrofit applications where an existing volume damper has failed or is ineffective. The present invention is not restricted by the geometry of the HVAC structures at the site of the installation. Once installed, the operation of the present invention offers an ease of adjustment for balancing an HVAC system and a locking mechanism for the reliable maintenance of the desired air flow. Further, the present invention allows the adjustment and re-adjustment of air flow in the HVAC system as required for the comfortable operation of the system and provides a level of precision in setting the volume of air flow which is unattainable by standard means.