A flow channel assembly (200) of a fluid micro-injection device has a fluid seat (210), a nozzle mounting plate (240), a nozzle (220), a nozzle platen (250) and a fluid supply joint (230). The nozzle (220) is connected to the fluid seat (210) by the nozzle mounting plate (240). The nozzle platen (250) is connected with the nozzle mounting plate (240) to secure the nozzle (220). The fluid supply joint (230) and the fluid seat (210) are connected to control the fluid flowing to the nozzle (220).

The invention relates to nozzle tips including a nozzle body and a tip portion, configured to minimize the accumulation of a resin on the nozzle tip as it is dispensed through the nozzle tip. The nozzle tip can contain a central flow channel and an internal portion that branches and guides the resin into multiple exiting flow channels that define tangential pathways to the outer surface of the nozzle tip. The nozzle tip can include grooves that define extended, sharply angled flow paths for the resin. Nozzle tips can have a neck portion separating a nozzle body and a tip end of the nozzle tip; here, a doughnut-shaped space located around the neck portion can be defined by the base of the nozzle, the crown of the nozzle, and the neck portion, for encouraging turbulent flow of the resin to scour the nozzle tip during dispensing.

A work machine can include a frame; a spray system couple to the frame and including a spray bar having a plurality of nozzles; a pressure sensor to detect a pressure of a liquid within the spray bar; and a controller to determine whether the detected pressure of the liquid within the spray bar has exceeded a pre-determined pressure threshold.

A work machine can include a frame; a spray system couple to the frame and including a spray bar having a plurality of nozzles; a pressure sensor to detect a pressure of a liquid within the spray bar; and a controller to determine whether the detected pressure of the liquid within the spray bar has exceeded a pre-determined pressure threshold.

A directed energy deposition nozzle assembly including (1) a nozzle configured to dispense material for directed energy deposition, wherein the material comprises one or more of metallic powder, ceramic powder, and glass powder, and wherein (a) the nozzle has an orifice through which the material exits the nozzle, wherein the nozzle comprises an inner body and an outer body that is peripherally disposed around the inner body, and wherein the orifice is defined by a gap between the inner body and the outer body, or (b) the nozzle comprises a plurality of orifices through which the material exits the nozzle, and (2) a vibrator configured to apply a vibration to the nozzle.

A directed energy deposition nozzle assembly including (1) a nozzle configured to dispense material for directed energy deposition, wherein the material comprises one or more of metallic powder, ceramic powder, and glass powder, and wherein (a) the nozzle has an orifice through which the material exits the nozzle, wherein the nozzle comprises an inner body and an outer body that is peripherally disposed around the inner body, and wherein the orifice is defined by a gap between the inner body and the outer body, or (b) the nozzle comprises a plurality of orifices through which the material exits the nozzle, and (2) a vibrator configured to apply a vibration to the nozzle.

A paint spray nozzle is provided for a paint spray system. The nozzle includes a single-piece body having a conduit portion. The conduit portion includes a first surface defining a first passage that terminates at an orifice along a longitudinal axis and a second surface that defines a second passage along the longitudinal axis. The second passage is fluidly connected to the orifice. The orifice is configured to direct the paint to flow along a flow path through the second passage. The second surface defines an inlet cross-sectional width positioned at the orifice and an outlet cross-sectional width positioned at an outlet. The outlet cross-sectional width is larger than the inlet cross-sectional width, such that the paint that deposits on the second surface is positioned relative to the longitudinal axis to be re-absorbed into the flow path of the paint.

An apparatus for sterilizing a liquid comprises a container (10) having an inlet (12), an outlet (14) and an interior (16) with an outer wall (18), and at least one light source (32) which is adapted to emit radiation in the ultraviolet wavelength range, in particular UV-C radiation, through the outer wall (18) into the interior (16), the outer wall (18) of the interior (16) for this purpose being configured to be at least partially transparent. The inlet (12) comprises at least one opening (28), which is positioned and aligned in relation to the outer wall (18) of the interior (16) and the at least one light source (32) in order, when a pressure is exerted on the liquid to be admitted through the at least one opening (28) and to be sterilized, to form a liquid jet (30) directed onto the outer wall (18) in a region of the at least one light source (32) and/or above the latter, and/or to form a liquid film (31) there. The liquid jet (30) impinging on the outer wall (18) may, for example, flow down thereon as a thin liquid film (31) in front of the at least one light source (32) and thereby lead to effective sterilization even with a low penetration depth of the UV radiation.

An apparatus for sterilizing a liquid comprises a container (10) having an inlet (12), an outlet (14) and an interior (16) with an outer wall (18), and at least one light source (32) which is adapted to emit radiation in the ultraviolet wavelength range, in particular UV-C radiation, through the outer wall (18) into the interior (16), the outer wall (18) of the interior (16) for this purpose being configured to be at least partially transparent. The inlet (12) comprises at least one opening (28), which is positioned and aligned in relation to the outer wall (18) of the interior (16) and the at least one light source (32) in order, when a pressure is exerted on the liquid to be admitted through the at least one opening (28) and to be sterilized, to form a liquid jet (30) directed onto the outer wall (18) in a region of the at least one light source (32) and/or above the latter, and/or to form a liquid film (31) there. The liquid jet (30) impinging on the outer wall (18) may, for example, flow down thereon as a thin liquid film (31) in front of the at least one light source (32) and thereby lead to effective sterilization even with a low penetration depth of the UV radiation.

In a nozzle deposit removing device and a method of nozzle deposit removal, compressed air is supplied to an air supply hole of a negative pressure generating unit from an air supply source, and compressed air is released to outside via an other end of a release hole from the air supply hole, thereby generating a flow of negative pressure directed from a tapered section of a nozzle insertion member toward the release hole via a through-hole. Next, a tip section of the nozzle is inserted into the tapered section of the nozzle insertion member, thereby forming a gap between the tapered section communicating with the through-hole and the tip section of the nozzle.