An air conditioner indoor unit, comprising a casing, and a fan casing, an electric heating assembly and a heat exchanger assembly which are disposed in the casing. The fan casing has a return air inlet and an air outlet, the electric heating assembly and the heat exchanger assembly are both disposed at the air outlet of the fan casing, and the electric heating assembly is located between the fan casing and the heat exchanger assembly. Further disclosed are an air conditioner control method, an air conditioner, and a storage medium. Since the electric heating assembly is disposed at the air outlet of the fan casing and between the fan casing and the heat exchanger assembly, the fan casing and the heat exchanger assembly can isolate a fire source that may be generated by the electric heating assembly when the electric heating assembly has a blow or other accident.

A tie rod for spanning a duct interior to join duct walls bounding the duct interior, that can be simply and inexpensively fabricated from sheet metal or other suitable material, including automatically, securely fastenable quickly and easily to the duct walls, often by one person, and which can be configured to be nestable for efficient storage and shipping, of elongate construction for spanning a duct interior, with a transverse attachment flange or flanges that can be pre-bent or bent onsite at the installation location via special bending features to snug to a duct wall, and include holes for threadedly receiving fasteners, having a shape and size to reduce fastening torque, with a two attachment flange configuration that resiliently self retains the fastener against loosening from vibration and other forces.

A sealing device comprising: an axially deformable tubular membrane (4) having a first annular end and a second annular end (8), a first annular coupling ring (5; 205) rigidly connected to the first end of the tubular membrane and having a lateral annular wing (10) providing an axial annular attachment space (12) that is axially open on the side of the second annular end of the tubular membrane and is radially located on a lateral side of the tubular membrane, and a second coupling ring (7) rigidly connected to the second end of the tubular membrane and having a projecting lateral annular ring (14) axially extending opposite the first annular end of the tubular membrane and radially offset opposite said axial annular attachment space relative to said lateral side of the tubular membrane. An assembly comprising two coaxial ducts (2, 3) engaged together, between which the sealing device is mounted.

A filter, a manufacturing method for a filter, and an air conditioner are provided. The filter includes a casing (10), a transition tube (20), and a filter screen assembly (30). The filter screen assembly (30) is provided in the casing (10), fitted with and connected to an inner wall of the casing (10), the casing (10) is an integrally formed piece, and two axial ends of the casing (10) have neck sections (11), and two neck sections (11) are both fixedly connected to the transition tube (20).

An adaptor for engagement to an air duct. The adaptor includes a back portion with an aperture within the back portion, a bellow adjacent the back portion with an opening positioned in a corresponding relationship with the aperture of the back portion, a top portion adjacent the bellow and spaced-apart from the back portion. A ring member is rotationally engaged to the back portion and disposed within the aperture of the back portion and the opening of the bellow. The ring member receives an ion generation device configured to engaged the ring member and containing a cleaning device for periodically cleaning a pair of electrodes.

A duct clamp assembly comprises a clamp configured to apply pressure around a connection point of two duct segments, and a gasket positioned on an inner surface of the clamp. The gasket comprises a body made of a foam and a layer made of a solid polymer, and the layer extends around an outer surface of the body.

A crimping machine including a first shaft having a first crimping portion and a bead wheel and a second shaft having a tapered portion disposed opposite the bead wheel of the first shaft. The first and second shafts are configured to grip a pipe blank having a transverse channel including a first angle. The first and second shafts are further configured to roll the pipe blank forward while crimping a portion of the pipe blank with the first and second crimping portions and applying pressure on the transverse channel of the pipe blank. The crimping machine further has having a tapered portion disposed opposite at least a portion of the crimping portion and the bead wheel of the first shaft. The bead wheel is configured to push upon the forming shaft to bend the first angle of the transverse channel formed in the pipe blank to a second angle.

An oval-shaped flange assembly for use on heater treaters and other heated and/or pressurized separation vessels. A first substantially oval-shaped, raised face blind flange member operationally attached to a fire tube mates with an opposing oval-shaped, raised face slip-on flange member attached to a heater treater or other pressurized vessel. An alignment guide pin facilitates fast and efficient connection and disconnection of the flange members.

An exhaust fan includes a generally square housing, adjustable-height supports, and attachments for a variety of air ducts. The air ducts are each designed to provide a sufficient air seal to effectively enable the exhaust fan to evacuate dust and debris from a wide variety of standard doors or windows, either on the ground floor or an elevated floor.

A filter, a manufacturing method for a filter, and an air conditioner are provided. The filter includes a casing, a transition tube, and a filter screen assembly. The filter screen assembly is provided in the casing, fitted with and connected to an inner wall of the casing, the casing is an integrally formed piece, and two axial ends of the casing have neck sections, and two neck sections are both fixedly connected to the transition tube.