A spraying device with air atomization and pneumatic drive, including at least one air valve for controlling a spraying air flow through the spraying device, at least one media valve for controlling a media flow through the spraying device, at least one first pneumatically actuated drive piston for actuation of the at least one air valve and at least one second pneumatically actuated drive piston for actuation of the at least one media valve.

A mist spraying unit atomizes a liquid and sprays the liquid as a mist, a light projector irradiates a space into which the mist is sprayed from the mist spraying unit with light, an imaging unit images scattered light by the mist of the light irradiated from the light projector, and an arithmetic unit calculates a mist concentration in the space based on a luminance value of a pixel constituting an image acquired from the imaging unit, thereby stopping spraying of the mist sprayed from the mist spraying unit.

A fine particle sprayer including a nozzle for dispersing a liquid disinfectant into a spray plume of droplets and a means for directing pressurized air below the spray plume to increase droplet transfer efficiency, and above and around the spray plume to prevent errant droplets from drifting toward an operator. A sprayer system includes a sprayer, a housing, and a blower that may be removably attached to the sprayer for generating an air stream below the droplets to improve droplet transfer efficiency.

An aerosol generating system for generating a respirable dry powder aerosol from a liquid solution or liquid suspension, having: a liquid aerosol generating nozzle having a nozzle input end designed to receive the liquid solution or liquid suspension, and having a nozzle heliox supply designed to receive nozzle heliox, the liquid aerosol generating nozzle further having a nozzle output end for outputting a liquid aerosol suspended in the nozzle heliox; and a cylindrical evaporation chamber having a cylindrical evaporation chamber input end that is connected to the nozzle output end and connected to a dilution heliox supply for receiving both the liquid aerosol suspended in the nozzle heliox and for receiving the dilution heliox, and the cylindrical evaporation chamber having a cylindrical evaporation chamber output end outputting a first intermediate dry powder aerosol at a first intermediate dry powder aerosol volume flow of a specific concentration.

A fan-shaped air suction spray nozzle automatically adjusting an air suction speed is provided in the present invention, which includes a spray nozzle body and a liquid channel, the spray nozzle body being provided with a liquid channel in communication with a nozzle hole, and further includes a pressure groove and an air intake channel, wherein an inlet section of the liquid channel is in communication with the pressure groove, and the air intake channel is in communication with the liquid channel after penetrating through the pressure groove; an air intake orifice plate is installed in the pressure groove through an elastic damping apparatus, and a change of the pressure at an inlet of the liquid channel causes the air intake orifice plate to move between the pressure groove and the air intake channel; the air intake orifice plate is provided with several through holes of the same or different sizes, which are configured to change the air intake volume in the liquid channel as the air intake orifice plate moves in the pressure groove.

The present invention relates to a shower head which comprises a dispenser for optionally or selectively dispensing a fluid additive such as soap, simultaneously or separately with the water. The invention discloses an innovative mechanism using optimized fluid mechanics for spraying water or cleansing solution for a more hygienic and overall cleansing experience.

A high-volume low-pressure end effector is presented. The high-volume low-pressure end effector comprises a connection arm and a spray head. The connection arm comprises a housing with flexible conduits running through the housing. The spray head has integral channels configured to receive air and a fluid from the flexible conduits and deliver the air and the fluid to a number of outlets.

A liquid ejection nozzle that has a nozzle hole and ejects a liquid from the nozzle hole in a ejection direction toward a target subject includes a nozzle plate having the nozzle hole, and a pressing member having a through hole having a diameter larger than a diameter of the nozzle hole at a position corresponding to the nozzle hole in the ejection direction and configured to press the nozzle plate from a downstream side in the ejection direction.

A mobile spray dispenser comprises a fluid circulation system and a heating unit. The fluid circulation system has a motorized pump capable of circulating fluid from a fluid reservoir in a high-pressure spray mode and a low-pressure recirculation mode, and of providing the fluid to a sprayer. The motorized pump draws lower power in the low-pressure recirculation mode than in the high-pressure spray mode. The heating unit is disposed within the fluid circulation system to heat the fluid to a target temperature, and comprises a primary heater and a boost heater. The primary heater is configured to be active during both the high-pressure spray mode and the low-pressure recirculation mode. The boost heater is in fluid series with the primary heater, and is configured to be active only during the low-pressure recirculation mode.

A micronozzle device can include at least one layer having a plurality of nozzle exits for delivering a mixture of a first fluid and a second fluid, at least one first-fluid header layer having a plurality of first microchannels for receiving the first fluid, at least one first-fluid via layer adjacent the at least one first-fluid header layer to receive the first fluid and direct it to respective ones of the plurality of nozzle exits, at least one second-fluid header layer having a plurality of second microchannels for receiving the second fluid, at least one second-fluid via layer adjacent the at least one second-fluid header layer to receive the second fluid and direct it respective ones of the plurality of nozzle exits, and a plurality of first curtain-gas nozzles located at a first side of the micronozzle device and a plurality of second curtain-gas nozzles located at a second side of the micronozzle device.