An image forming apparatus includes an image forming unit, a fan, a duct including an air intake port, an air discharge port, and a body portion having a tubular shape and forming an air passage through which air taken in through the air intake port is flown to the air discharge port, the body portion including a holed wall portion to which a plurality of through holes are formed, the plurality of through holes being passed through between an inner surface, forming the air passage, of the holed wall portion and an outer surface, that is on an opposite side from the inner surface, of the holed wall portion, and a noise absorbing member attached to the outer surface of the holed wall portion so as to cover the plurality of through holes, the noise absorbing member having a noise absorbing property.

We disclose a window blind that includes a capacitor within each slat. Each plate of the capacitor may be connected to one of two batteries. At least one switch may be placed between each capacitor plate and its adjoining battery. When one switch is open, another switch may be closed thereby sending current to only one plate at a time. The plate that receives the current is negatively charged and the remaining plate is positively charged. The switch that is open may be changed to reverse the charges of the plates. This charge reversal may be actuated through a series of pull cord gestures from a user. By creating an electrical charge on the plates, dust is pulled from the air according to the net charge of the dust particles. The window blind therefore functions as an air purifier as well as a traditional window blind.

A valve actuator assembly that include an actuator and an actuator mounting assembly. The actuator mounting assembly may be secured to a valve shaft without the actuator present, and the actuator may be secured to the actuator mounting assembly later. This can make it easier to mount the actuator mounting assembly, especially in cramped spaces. In some cases, the actuator may be wired where it is convenient, and then moved to the actuator mounting assembly and secured to the mounted actuator mounting assembly, sometimes with a simple snap attachment. In some cases, a button, lever or other mechanism may release the actuator from the actuator mounting assembly for easy removal.

A valve actuator assembly that include an actuator and an actuator mounting assembly. The actuator mounting assembly may be secured to a valve shaft without the actuator present, and the actuator may be secured to the actuator mounting assembly later. This can make it easier to mount the actuator mounting assembly, especially in cramped spaces. In some cases, the actuator may be wired where it is convenient, and then moved to the actuator mounting assembly and secured to the mounted actuator mounting assembly, sometimes with a simple snap attachment. In some cases, a button, lever or other mechanism may release the actuator from the actuator mounting assembly for easy removal.

A converter module for converting three-phase electrical power to single-phase electrical power. The converter module includes three-phase terminals and a full-wave bridge rectifier. The three-phase terminals are configured to be electrically coupled to a three-phase power source from which a three-phase power signal is provided. The full-wave bridge rectifier is electrically coupled to the three-phase terminals and configured to rectify the three-phase power signal to a direct current (DC) power signal.

A HVAC unit manufacturing method and a HVAC system are, disclosed herein. In one embodiment, the HVAC system includes: a controller having control board terminals, a parallel wiring harness having a first and a second connection header, the first connection header coupled to the control board terminals, and a switch having terminals. The terminals of the switch including: a pair of functional terminals configured to indicate a status of the switch and a pair of jumpered terminals independent of the pair of functional terminals and internally connected together within the switch, wherein designated combinations of the terminals indicate a circuit configuration for employing the switch in the HVAC system with each of the terminals having a particular design that dictates a specific corresponding connection header be used for each of the designated combinations, wherein a single one of the designated combinations of the terminals corresponds to the second connection header.

A HVAC unit manufacturing method and a HVAC system are, disclosed herein. In one embodiment, the HVAC system includes: a controller having control board terminals, a parallel wiring harness having a first and a second connection header, the first connection header coupled to the control board terminals, and a switch having terminals. The terminals of the switch including: a pair of functional terminals configured to indicate a status of the switch and a pair of jumpered terminals independent of the pair of functional terminals and internally connected together within the switch, wherein designated combinations of the terminals indicate a circuit configuration for employing the switch in the HVAC system with each of the terminals having a particular design that dictates a specific corresponding connection header be used for each of the designated combinations, wherein a single one of the designated combinations of the terminals corresponds to the second connection header.

A second duct for guiding air outside an image forming apparatus A to a charging device includes: a first flow passage; a second flow passage bent from the first flow passage and extending in a direction orthogonal to a rotational direction and a rotational axis direction of a photosensitive drum, the second flow passage being provided with an outlet; and a plurality of flow dividing plates provided in the second flow passage, the plurality of flow dividing plates being disposed in parallel along the rotational axis direction and forming a third flow passage between the flow dividing plates adjacent to each other, in which a relationship between a length in the orthogonal direction and a length in the rotational axis direction of the third flow passage is a predetermined relationship.

An apparatus and method for cleaning split system air conditioning units. The apparatus comprises a shield functioning as a moisture barrier that sits between the wall and the AC unit and which releasably receives a drain pan that interconnects with the bottom of the shield to form a water tight seal. A flexible tube connects the bottom of the drain pan to a collection receptacle. Water and chemical sprayed into the unit to clean the unit drain through the unit, into the drain pan, through the tubing, and are collected by and can be disposed of from the receptacle. After the AC unit is cleaned, the drain pan, tubing and collection receptacle are removed leaving the area clean and dry. Kits comprising the apparatus of the invention can be sold together with new AC units or purchased separately.

A ceiling-mounted air conditioning indoor unit for a heat pump including a refrigerant circuit, the ceiling-mounted air conditioning indoor unit includes: a casing including an air inlet and an air outlet; a drain pan in a bottom portion of the casing; a heat exchanger in the refrigerant circuit that is disposed above the drain pan such that water dropping from the heat exchanger accumulates in the drain pan; a fan in the casing that draws air in from the air inlet, through the heat exchanger, and out of the air outlet; a bell mouth at the air inlet that guides the air drawn-in to the fan; a refrigerant leakage detection sensor that detects refrigerant leaking from the refrigerant circuit. The drain pan includes a first rim and a second rim.