An olfactory display includes a housing and a plurality of fragrance chambers formed in the housing. In each fragrance chamber, a solid-like fragrance source is accommodated and an airflow source is provided to send air into the fragrance chamber from an air intake port. An auxiliary airflow source that emits odorless air is also provided in the housing. The airflow source and the auxiliary airflow source are operated alternately or simultaneously. In response to a user operating an adjustment knob of a controller, operating time periods and stopping time periods of the airflow source and the auxiliary airflow source are changed, or the number of operating times is changed within a predetermined operating time period. A mixing ratio of the fragrance and the odorless air may also be adjusted by changing a voltage value of an alternating voltage to be applied to a piezoelectric device of the airflow source.

A rotating packed bed (RPB) unit comprising one rotor is described. The rotor comprises a first plate and a second plate. The rotor further comprises a plurality of annular permeable packing elements housed in between the first plate and the second plate, wherein a first end of each of the plurality of annular permeable packing elements is attached to the first plate, and wherein a second end of each of the plurality of permeable packing elements is attached to the second plate. The rotor further comprises a shaft coupled to one of the first plate and the second plate for rotating the rotor. Further, the rotor comprises a liquid inlet for receiving a liquid phase and a gas inlet for receiving a gas phase.

Systems and methods for gas processing are described that utilize two or more cells that are fluidly coupled to one another by a common liquid space. Via the common liquid space, each of the cells can be coupled to a fluid outlet. The cells can each include an absorber and/or other gas processing equipment. A feed gas can be separately fed to each of the cells for processing. The cells can be independently operable, such that not all of the cells must be operated simultaneously.

This application generally relates to systems, devices, and methods for delivering a fragrance. In some embodiments, portable fragrance delivery systems are provided. In further embodiments, improved fragrance delivery systems are provided that provide increased dispersion of scented agents by utilizing a fan formed from a fragrant material.

A volatile composition dispenser and a method of dispensing a volatile composition is provided. The volatile composition dispenser includes a reservoir for containing a volatile composition and a transport member having a first end portion and an opposing second end portion, and an evaporative surface. The first end portion of the transport member is in fluid communication with the reservoir and the second end portion of the transport member is in fluid communication with the evaporative surface. The volatile composition dispenser also includes an air pump in gaseous communication with the reservoir.

A dispensing device for release of a volatile material includes a base, a drive arm coupled to a pendulum based drive mechanism, and a refill coupled to the drive arm. The refill includes a support base, at least one flange, a substrate coupled with the at least one flange, and a use-up cue.

A scent dispensing device is disclosed. The scent dispensing device has a housing that has a cavity which forms an interior of the housing and separates the interior from an external environment. The cavity may be sized and dimensioned to receive at least one scent cartridge. The housing may have a number of apertures that each provide a respective flow path between the interior of the housing and the external environment. A number of selectively permeable membranes may be positioned in the flow paths. The selectively permeable membranes may selectively block moisture from reaching the interior of the housing from the external environment and may permit passage of gas between the interior of the housing and the external environment including passage of at least one scent from the interior of the housing to the external environment.

A fountain is provided. The fountain includes: a drape; a catch basin located below the drape and oriented to catch a fluid flowing at least one of over and through the drape; a conduit fluidly connected to the catch basin forming a circuit to return the fluid in the catch basin to flow at least one of over and through the drape; a pump fluidly connected to the circuit and configured to pump the fluid through the conduit; and at least one of the drape, catch basin, conduit includes surface oriented to contact the fluid and the surface includes at least one of copper and silver.

The invention relates to a fragrancing device comprising a housing, a fragrance cartridge, a closure element and a blower, wherein the fragrance cartridge and/or the blower and/or the closure element is arranged inside the housing and the housing has a first opening and a second opening, wherein an air flow can flow through the housing from the first opening to the second opening, wherein the fragrance cartridge can be exposed and closed by the closure element, wherein the first opening and/or the fragrance cartridge is arranged upstream of the blower relative to the air flow direction in the housing and the second opening is arranged downstream of the blower relative to the air flow direction in the housing.

A staged dry out process and control system for an evaporative media cooling system having a plurality of media stages that are selectively activated and deactivated by a control system is disclosed. The staged dry out process ensures that wet media stages are appropriately dried with minimal disruption to the staging strategy implemented by the control system. In one aspect, the staged dry out process monitors deactivated media stages to determine if the media stages reach a dry state before being activated. In another aspect, the staged dry out process locks out a media stage that has been in a wet state beyond a predetermined maximum time limit until the media stage attains a dry state. With this strategy the cooling system can operate without being required to completely shut down for a drying process.