In a system for depositing a matrix film by nebulizing a matrix solution onto a sample plate P to which a sample is attached, a chamber 10 housing a sample stage 11 to which a sample plate is attached, a nebulizing nozzle 20 for nebulizing the matrix solution onto the sample stage, a gas inlet 14 formed in the chamber, replacement gas suppliers 40, 41, 42, 43, 47 for supplying a replacement gas to the gas inlet, and replacement gas diffusers 15, 17 for diffusing a flow of the replacement gas in the chamber are provided. According to such a configuration, it is possible to perform gas replacement in the chamber while preventing the formation of a humidity gradient due to the gas flow of the replacement gas. As a result, the humidity in the chamber is kept constant and uniform, and the size of a crystal grain formed on the sample plate and the extraction efficiency of the sample components by the matrix solution can be stabilized.

The present disclosure provides a sprayer. The sprayer includes the spraying part. A spraying needle penetrates a first control channel and passes through a second water channel to reach a spraying end. A control block is connected with the spraying needle, the spraying needle is fitted in with an inner wall of a second control channel to block the water passing through the second control channel, meanwhile, the control block blocks an air inlet hole, and water in a water tank is separated from the atmospheric pressure. When the spraying needle is separated from the second control channel, the control block is distal to the air inlet hole, water in the water tank is communicated with atmospheric pressure, and the water reaches the spraying end through the second control channel.

A size-selective aerosol nozzle that includes an impactor body with an internal enclosed sidewall spanning in a directional longitudinally from a distal end of a distal spray end to a central sidewall terminal end and defining a central spray channel and a fluid segregation member. The segregation member may include an internal enclosed sidewall defining at least one liquid removal channel spanning laterally away from a central spray channel, defining a second aerosol discharge outlet in fluid communication with the central spray channel, and spans into the central spray channel to bifurcate the central spray channel into the liquid removal channel and an aerosol discharge channel. The fluid segregation member has an inner surface defining the liquid removal channel and is in an overlapping configuration with the internal enclosed sidewall to mechanically segregate emitted aerosol spray from the first aerosol discharge outlet of a portable hand-held aerosol spray assembly.

A spray nozzle assembly having a nozzle body and a downstream air cap. The air cap has a central opening through which liquid is directed and a plurality of circumferentially spaced air passages oriented at a compound angle to the central flow axis of the air cap opening for directing pressurized air flow streams that interact with discharging liquid for atomizing the liquid while imparting a tangential direction to the atomized liquid for enhanced atomization and a swirling movement into a full cone spray pattern. The air cap may have an integrally formed spray tip or a separate spray tip may be associated with the nozzle body. The air cap may be formed with a downstream conical recess into which liquid and air streams are directed, or alternatively, be designed for atomizing liquid internally within the air cap.

There is provided a substrate processing apparatus that includes: a process chamber in which a substrate is accommodated to be processed; a plurality of quartz gas nozzles configured to supply, into the process chamber, a plurality of process gasses capable of generating reaction products by reacting the plurality of process gasses with each other; an evacuation device configured to evacuate an interior portion of the process chamber; a bypass pipe configured to connect a quartz gas nozzle among the plurality of quartz gas nozzles to the evacuation device; and a coating gas nozzle configured to supply at least one of a silicon-containing gas and an oxidizing gas capable of forming a SiO.sub.2 coating film inside the quartz gas nozzle connected to the evacuation device in a state in which the inside of the quartz gas nozzle connected to the evacuation device is evacuated by the evacuation device.

The invention relates to a device (10) for supplying air to a fuel cell (3), having at least one air conveying device (11) and at least one humidifying device, which supplies condensed product water from the fuel cell (3) to the compressed supply air flow by means of at least one nozzle (171-178). It is characterized in that a field (15) of two-substance nozzles (171-178) for the supply of water is formed in the flow cross section of the supply air flow, wherein a separated cross section (161-168) through which flow can take place is formed for each of the two-substance nozzles (171-178) and wherein each of the separated cross sections (161-168) through which flow can take place comprises a valve (22) having a valve seat (24) and a valve body (23), which is pressed counter to the flow by a restoring force in the direction of the valve seat (24).

A compounding system for use in finishing a vehicle having a vehicle body having painted surfaces. The compounding system employs a spray gun having a nozzle having a fluid opening that is substantially 3 millimeters in diameter and a reservoir in communication with the fluid opening. Compressed air selectively flows past the fluid opening to atomize the compound paste into a compound spray that is used to cover all of the painted surfaces of the vehicle with a thin, uniform coating in a single step. The compound paste is removed by buffing all painted surfaces on the vehicle body to a shine in a single step.

This description is directed to a spray gun comprising a spray gun body, an air cap, a fluid spray nozzle having a fluid tip, at least one air distribution channel for atomizing air and at least one air distribution channel for fan air, wherein the fluid spray nozzle and the air cap are configured to direct an atomization airflow at an angle of about 10 to about 70 degrees into the coating composition jet, and the fluid spray nozzle and the air cap are configured to provide an atomizing air pressure to fan air pressure ratio of about 0.1 to about 10. The description is also directed to the use of the spray gun for applying water-based coating compositions, a method for producing a coating layer over a substrate with a coating composition, and a method for applying a layer of a water-based coating composition onto a substrate.

An electrostatic sprayer operable at high flow rates and low pressures particularly suitable for spray drying. The sprayer includes an elongated body having a downstream spray nozzle assembly through which electrically charged liquid is directed via a central feed tube within the nozzle body and atomizing air is supplied via an annular passage about the liquid feed tube. In one embodiment, the nozzle assembly is an external mix cluster head spray nozzle assembly having a plurality of circumferentially spaced metallic spray tips. In another embodiment, the spray nozzle is an internal mix nozzle assembly having a spray tip with an internal mixing chamber for atomizing liquid prior to discharge.

The present invention discloses a single step process for the synthesis of furan derivative from carbohydrate comprises stirring the reaction mixture of carbohydrate in solvent in presence of catalyst at temperature in the range of 170 to 190 C. for the period in the range of 23 to 25 hrs to afford corresponding furan derivative.