An inflatable device equipped with a guiding mechanism and methods of installing the inflatable device to form a temporary barrier within a gas turbine engine are provided. In one aspect, an inflatable device includes a backbone and an inflatable bladder connected thereto. The backbone is formed of a flexible and inextensible material. The inflatable bladder is formed of an expandable material. To install the inflatable device within an annular chamber of a gas turbine engine, the backbone is inserted into a first access port of the engine and is moved circumferentially around the annulus of the chamber. The backbone is retrieved through a second access port. The inflatable bladder is moved into position within the chamber by pushing the backbone into the first access port and/or pulling the backbone out of the second access port. When positioned in place, the inflatable bladder is inflated to form an annular seal.

A water dispersing system (WDS) that allows a selectable quantity of water to be dispersed into an environment. The WDS utilizes a fan and a water supply assembly. The fan has a frame inside of which are two rotating blades, and preferably a stand. The water supply assembly includes a reservoir, a water tube, and a water dispersing head. Water is gravity fed from the reservoir, through the water tube and out of the head. Water from the head is directed into the first fan's rotating blades. Once the water hits the blades, the water is re-directed back out through a front grill on the fan. The second fan blades project air outward. The amount of water that comes from the WDS can be selectably chosen, from a light mist to a heavier spray, and the temperature of the water can be lowered by placing ice into the reservoir with the water. An excess water basin catches any water that drips downward from the blades.

A centrifugal compressor includes a housing that accommodates an impeller. The housing includes a motor housing, a speed-increasing gear housing, and a compressor housing. The compressor housing has a suction port through which air is drawn in. The compressor housing includes a cylindrical main body, a cylindrical boss, and a fitting portion having a shape of a truncated cone. The cylindrical boss projects from the main body. The boss includes an injection port for spraying water that is generated through power generation by a fuel cell to air flowing through the suction port toward an impeller chamber.

The centrifugal compressor is provided with a casing, a rotating shaft which is supported inside the casing, an impeller which is arranged on the rotating shaft and rotates to compress a fluid, and a washing liquid injection device which injects a washing liquid into a flow path formed by the impeller and the casing. The washing liquid injection device is provided with a plurality of nozzles which are arranged along a circumferential direction of the rotating shaft to inject the washing liquid into the flow path and a plurality of chambers which communicate with each corresponding nozzle among the plurality of nozzles and supply the washing liquid to the corresponding nozzle.

A humidification and air cleaning apparatus is provided, in which a wave having a predetermined cycle is formed on a plurality of blades of a blower fan, such that operating noise caused by a flow of discharged air may be minimized, and a wave is formed at a trailing edge, such that a phase difference may be formed for air to be separated, and air flow noise of the discharged air may be reduced.

A centrifugal compressor includes: a main casing having an inlet and an outlet; at least one impeller disposed rotatably inside the main casing; an intake casing connected to the inlet, the intake casing having an intake port on a position spaced away from the inlet in a direction of an axis; a cleaning-liquid injection device capable of being disposed on a side of the intake port inside the intake casing; and a cleaning-liquid supply device for supplying a cleaning liquid to the cleaning-liquid injection device. The cleaning-liquid injection device includes: a pipe capable of being disposed so as to extend along a plane which intersects with the direction of the axis, inside the intake casing; and a plurality of injection holes disposed on the pipe.

An airflow fan accessory comprising an accessory having a scented fabric and a fastening mechanism located along the outer edge of the scented fabric. In a preferred embodiment, the accessory may be easily attached to and detached from the fan blade enclosure of any typical airflow fan. Upon air flow through the fan and airflow fan accessory, a pleasant scent may be imparted to the room via release of scent from the scented fabric component.

A mist blower with a Venturi housing for spraying water or chemicals onto objects such as livestock, orchards, weed areas or the like. The mist blower includes an air blower having an air discharge opening formed therein. A Venturi housing has its inner end in communication with the air discharge opening. An air discharge housing has its inner end embracing the outer end of the Venturi thereby creating a Venturi gap therebetween. The Venturi housing has a plurality of Venturi openings formed therein. As air is blown through the Venturi housing, the Venturi openings draw additional air into the air being discharged. As air is blown through the air discharge housing, additional air is drawn into the air discharge housing by way of the Venturi gap.

A seal device has a seal main body. The seal main body includes a plurality of holes arranged to be recessed from a facing surface facing a rotor which rotates around an axis, and an ejection flow path which guides a fluid to bottom portions of the holes and ejects the fluid from the bottom portions.

Provided is a refreshing device including a fan mounted onto a base. The base includes a main container for storing a fluid, a mini fan, and a nebulizer to set in motion the fluid nebulized outside of the main container toward a diffuser positioned downstream from the fan. The diffuser includes an outlet opening having a substantially annular shape, the outlet surface of the outlet opening being substantially perpendicular to the direction of airflow generated by the fan.