A grate assembly includes a grate and a nozzle. The grate includes a nozzle aperture. The nozzle is received by the nozzle aperture. The nozzle includes a base and a baffle coupled to the base. The base and the baffle define a plurality of flow paths. The nozzle also includes a deflector ring removably positioned between the baffle and the base. The deflector ring includes a body that defines a spray outlet, wherein the body allows fluid flow through one or more flow paths aligned with the spray outlet and prevents fluid flow through the remaining flow.

A fire protection sprinkler with a push-in connection includes a sprinkler body having an input orifice for receiving fluid and an output orifice for outputting the fluid, the body having a push-in connection at the input end and a base portion. The push-in connection is adapted to be connected to a pipe fitting by insertion and has a plurality of recesses, a first recess having a first gasket, a second recess having a second gasket, and a third recess having a retaining clip. A frangible element is held in place by a set screw and a stopper. The frangible element is designed to fail at a predetermined temperature to release the stopper. A deflector is positioned on the base portion and configured to direct the output fluid toward the output end, upon activation of the sprinkler by failure of the frangible element at the predetermined temperature.

A fire protection sprinkler with a push-in connection includes a sprinkler body having an input orifice for receiving fluid and an output orifice for outputting the fluid, the body having a push-in connection at the input end and a base portion. The push-in connection is adapted to be connected to a pipe fitting by insertion and has a plurality of recesses, a first recess having a first gasket, a second recess having a second gasket, and a third recess having a retaining clip. A frangible element is held in place by a set screw and a stopper. The frangible element is designed to fail at a predetermined temperature to release the stopper. A deflector is positioned on the base portion and configured to direct the output fluid toward the output end, upon activation of the sprinkler by failure of the frangible element at the predetermined temperature.

A system for spraying plants comprises a location-determining receiver for estimating a position of a sprayer with respect to one or more rows of plants. A distance sensor is arranged to measure a distance between a nozzle assembly and a plant row segment. A guidance module is adapted to align the nozzle assembly with a target path between the rows of plants, such as a centered path between the rows, or offset between the rows of the plants. A first nozzle is targeted toward a first zone with respect to the plant row segment based on a first spray pattern of the first nozzle. A second nozzle is targeted toward a second zone with respect to the plant row segment based on a second spray pattern of the second nozzle. A nozzle selection module for selecting automatically a first nozzle or a second nozzle based on maximum coverage of a target zone around the plant segment based on the first zone, the second zone, and the measured distance.

A system for spraying plants comprises a location-determining receiver for estimating a position of a sprayer with respect to one or more rows of plants. A distance sensor is arranged to measure a distance between a nozzle assembly and a plant row segment. A guidance module is adapted to align the nozzle assembly with a target path between the rows of plants, such as a centered path between the rows, or offset between the rows of the plants. A first nozzle is targeted toward a first zone with respect to the plant row segment based on a first spray pattern of the first nozzle. A second nozzle is targeted toward a second zone with respect to the plant row segment based on a second spray pattern of the second nozzle. A nozzle selection module for selecting automatically a first nozzle or a second nozzle based on maximum coverage of a target zone around the plant segment based on the first zone, the second zone, and the measured distance.

The present application relates to a fragrance atomization and diffusion device convenient for replacing a fragrance liquid container. The fragrance atomization and diffusion device convenient for replacing a fragrance liquid container comprises a housing, an atomization mechanism, a bottom cover and a top cover respectively located at two ends of the housing and enclosing a chamber, a bracket fixedly mounted within the chamber, a gas supply assembly and a power supply assembly, the atomization mechanism, the gas supply assembly and the power supply assembly each mounted at the bracket; the bracket is provided along the vertical direction with a mount cavity for mounting the atomization mechanism, an end of which extends through the top cover; and the atomization mechanism comprises an atomization head and a liquid storage bottle connected to the atomization head. The present application has the advantage of convenient addition of a fragrance liquid.

The present application relates to a fragrance atomization and diffusion device convenient for replacing a fragrance liquid container. The fragrance atomization and diffusion device convenient for replacing a fragrance liquid container comprises a housing, an atomization mechanism, a bottom cover and a top cover respectively located at two ends of the housing and enclosing a chamber, a bracket fixedly mounted within the chamber, a gas supply assembly and a power supply assembly, the atomization mechanism, the gas supply assembly and the power supply assembly each mounted at the bracket; the bracket is provided along the vertical direction with a mount cavity for mounting the atomization mechanism, an end of which extends through the top cover; and the atomization mechanism comprises an atomization head and a liquid storage bottle connected to the atomization head. The present application has the advantage of convenient addition of a fragrance liquid.

An apparatus for mounting a fluid cryogen injection nozzle to the exterior surface of a side wall of a cryogenic process vessel for permitting injection of a fluid cryogen into the interior of the cryogenic process vessel, the mounting apparatus including a base member and a rotatable insert member engaged with the base member, the rotatable insert member including a template for creating an opening in the side wall of the process vessel that is configured to accept the cryogen injection nozzle, and for attaching mechanical fasteners to the side wall of the process vessel in a defined pattern, such as a concentric pattern about the opening in the side wall of the cryogenic process vessel. A related mounting method is also provided.

An apparatus for mounting a fluid cryogen injection nozzle to the exterior surface of a side wall of a cryogenic process vessel for permitting injection of a fluid cryogen into the interior of the cryogenic process vessel, the mounting apparatus including a base member and a rotatable insert member engaged with the base member, the rotatable insert member including a template for creating an opening in the side wall of the process vessel that is configured to accept the cryogen injection nozzle, and for attaching mechanical fasteners to the side wall of the process vessel in a defined pattern, such as a concentric pattern about the opening in the side wall of the cryogenic process vessel. A related mounting method is also provided.

Described herein is a technique capable of properly attaching a nozzle to a reaction tube. According to one aspect thereof, there is provided a nozzle installation jig including: a lower plate configured to make contact with a process vessel in a vicinity of a lower end opening of the process vessel in which a nozzle is provided; a frame fixed to the lower plate and extending upward with respect to the lower plate; an upper plate fixed to the frame and provided with a sensor configured to detect a position of the nozzle in the process vessel; and a notification device configured to transmit a notification to an operator according to a detection result of the sensor.