The present utility model provides a fan cover shell and an air conditioning unit having the same. The fan cover shell includes an outer frame; multiple annular auxiliary reinforcement ribs, arranged from the center of the fan cover shell towards the outer frame; and multiple main reinforcement ribs, respectively extending from the center of the fan cover shell to the outer frame and intersecting with the auxiliary reinforcement ribs to form multiple ventilation grills; the main reinforcement rib forms a multi-section curve, and any adjacent curves of the multi-section curve bend towards a reverse direction. According to the fan cover shell of the present utility model, a better air guide effect is achieved by optimizing the main reinforcement ribs.

An airflow baffle for controlling airflow through a heating, ventilation, and air conditioning (HVAC) system. The airflow baffle includes a main body, an upstream side of the main body, and a downstream side of the main body. A plurality of holes are defined by the main body, and extend through the main body between the upstream side and the downstream side. The plurality of holes include holes of various different diameters spaced apart at various different intervals to provide uniform airflow through the baffle.

An inductive-humidification and evaporative-cooling ventilation system comprising: means for generating a flow of air; a channel for conveying said flow of air, said channel comprising a plurality of inductive holes for transferring said flow of air into the environment, said channel further comprising at least one outflow mouth for expelling said flow of air, which has a three-dimensional structure open both at the back and at the front, and a fluid-thread straightener set at the rear end of said at least one outflow mouth, which recalls a flow of air from the environment surrounding said channel; and at least one humidification device for introducing nebulised water into the environment; wherein said at least one humidification device is set within said at least one diffusion mouth, and said plurality of holes are arranged in a number of rows aligned longitudinally along the ducts.

The present disclosure is relater to an air conditioner. An air conditioner according to one aspect of the present disclosure may comprise a case having a space therein; a front panel coupled to a front portion of the case and forming a suction port; a fan disposed in the case and rotating with respect to a rotational axis that extends in a front-rear direction; a discharge grille that is disposed at a position that a rotational direction of the fan is directed upward, the discharge grille through which air blown by the fan is discharged; and a guide disposed at the discharge grille and curved downward along a direction toward an outside of the case, thereby directing the discharged air to flow downward.

A terminal unit of a heating, ventilation, and/or air conditioning (HVAC) system includes a fan configured to provide an airflow through the HVAC unit by drawing the airflow into a fan inlet and expelling the airflow out of a fan outlet. The terminal unit also includes an inlet diffuser disposed upstream of the fan inlet relative to a direction of the airflow, wherein the inlet diffuser includes a first layer of perforated metal and a second layer of perforated metal disposed between the first layer of perforated metal and the fan inlet.

A flow-straightening device at a coupling portion between: an air supply chamber adjacent to a coating chamber and supplying air to the coating chamber via a filter provided at a boundary wall between the air supply chamber and the coating chamber; and an air supply duct supplying air to the air supply chamber in a direction along the boundary wall. When a direction parallel to the boundary wall and perpendicular to the air supply chamber width direction is an air supply chamber depth direction; and a direction perpendicular to the boundary wall is an air supply chamber thickness direction, the device includes a plurality of fins arranged in the air supply chamber width direction and the air supply chamber depth direction and juxtaposed to each other to be spaced apart from each other in the chamber thickness direction.

An air supply system (200, 300) for providing a clean air flow (250) in a room (1) is provided. The air supply system (200, 300) comprises a first air supply section (120) through which a first flow of clean air is supplied with a lower temperature than the temperature of the ambient air in the room (1), and a second air supply section (230) through which a second flow of clean air is supplied. The first air supply section (120) is arranged to form a gravitationally induced downward flow, whereas the second air supply section (230) is arranged to adjust the velocity (vi) of the second flow of clean air when entering the second air supply section (230) to a predetermined velocity (v2), and is adapted to direct the second flow of clean air downwards. A method (600) for providing a clean air flow in a room is further provided.

A noise-reducing valve structure includes a unitary spindle-shaped body having a central lumen for receiving a fluid flow and a poppet member, the body having an inner diameter adjacent the central lumen and an outer diameter and a circumferentially and axially distributed plurality of radial passages adapted to be opened and closed in accordance with a guided position of the poppet member, the plurality of radial passages extending through the spindle-shaped body from the inner diameter to the outer diameter and having a gradually increasing area from the inner diameter to the outer diameter.

The present invention provides a steady flow structure and a ventilation apparatus having the steady flow structure. The ventilation apparatus comprises: a hood arranged indoors, an inner chamber of the hood constituting a work chamber; and a front wall of the hood formed with a front opening which opens towards the indoor environment; an air supply duct, which supplies air into the work chamber through air supply outlets provided on the hood and extending in the left and right width direction of the work chamber; and an air exhaust duct, through which the air entering the work chamber through the front opening and the air entering the work chamber through the air supply outlets are exhausted from the work chamber to outside; a steady flow structure is provided in the interior of the air supply duct, supply airflow enters into the steady flow structure in the left-right directions, and then blows out evenly and stably along the air supply outlets located along the sides of the steady flow structure after flowing through the steady flow structure.

An air conditioner includes: a suction port; a suction grill provided at the suction port and including a plurality of bars spaced apart from one another and arranged substantially parallel to one another and a suction surface located at suction-side end portions of the plurality of bars; and an air blower configured to suction air from the suction port through the suction grill. Each of the plurality of bars includes an inclined plate portion and a flow straightening plate portion, which are arranged in this order from the suction surface toward a downstream side of the flow of the air, the inclined plate portion being inclined with respect to the suction surface, the flow straightening plate portion being continuously formed from the inclined plate portion and extending in a direction substantially perpendicular to the suction surface and toward the downstream side.