A method for producing a steel tube include the manufacturing of a steel tube having an inner tube wall, an outer tube wall (3), and a free tube cross-section enclosed by the inner tube wall. After the manufacturing, the steel tube includes at least one contaminant on the outer tube wall and entails, after the manufacturing of the steel tube, cleaning of the outer tube wall by applying liquid or solid CO.sub.2 onto the outer tube wall in order to remove a contaminant from the outer tube wall.

A toilet-unclogging device which has a frontal portion with a handle, a hollow elongated body, a tail portion with a flower-like plunge ball, and waterproof disposable barriers. The waterproof disposable barriers which are stored in the frontal portion can be moved along the inside of the hollow elongated body and be retrieved through the tail portion. The waterproof disposable barrier can be used to enclose the entire device during operation yet allowing the device to function normally. After being enclosed with the waterproof disposable barrier, the plunge ball with petal-like members in the frontal portion could be thrust into the toilet drain hole to create a seal. Together with the waterproof disposable carrier, while being moved in and out of the toilet drain hole, the device will move the clogged waste through the toilet. When the operation is completed, the used waterproof disposable barrier could be removed and disposed.

A laser cleaning system including a laser source, an energy-transferring optical fiber, a laser cleaning head, a coreless motor, a connection lens barrel, and a mirror.

A method for operating a food processing device includes an irradiation step. The food processing device includes a reaction vessel and a catalyst reactor. The reaction vessel receives a mixture in a liquid form including a raw material for a food product and water. The catalyst reactor is disposed in the reaction vessel. The catalyst reactor includes a reaction tube and a light source disposed in the reaction tube. The reaction tube has an outer surface on which a photocatalyst is provided, and transmits light emitted from the light source. The method for operating the food processing device includes the irradiation step of performing irradiation with light from the light source while water is in contact with the outer surface of the reaction tube in a period after a reaction product is removed from the reaction vessel and before a raw material is subsequently introduced into the reaction vessel.

Apparatus and system for self-cleaning a heat transfer coil of an HVAC system includes a foam or spray generator, one or more manifolds, one or more couplers, and a controller. The foam or spray generator is configured to generate foam or spray. Each manifold includes one or more emitters. The couplers are configured to couple the manifolds onto the heat transfer coil of the HVAC system, such that the emitters are configured to emit the foam or spray onto a side of the heat transfer coil. The controller is configured to cause the foam or spray generator to generate the foam or spray and cause the emitters to emit the foam or spray when a fan is running, such that the foam or spray is caused to flow through the heat transfer coil to clean debris off or apply a treatment to the heat transfer coil.

A pipe snow removal device is supported for movement longitudinally along a pipe to clear snow and/or ice from the pipe. A main housing has boundary walls defining an outer boundary of a bounded space within a hollow interior of the main housing. An inner boundary of the bounded space is open to the pipe upon which the main housing is supported. A mounting arrangement supports the main housing relative to a work vehicle that is movable alongside the pipe to displace the main housing along the pipe. A heater heats the bounded space to melt the snow/ice on the pipe. A scraper assembly supported in leading relationship to the main housing clears loose snow before melting remaining snow and ice on the pipe as the housing passes.

A deburring device includes a cylindrical body with a receptacle for receiving a pipe. The cylindrical body includes an abrasive surface provided in the receptacle, which is configured to simultaneously deburr at least two surfaces of a pipe inserted into the receptacle.

An apparatus for removing foreign substances around a heating tube of a steam generator is proposed. The apparatus includes a universal machine unit configured to hold the foreign substances, a connecting rod unit including a distal end connecting rod and a connecting rod part, a connecting rod moving unit configured to supply the connecting rod unit into the heating tube to move the connecting rod unit, a connecting rod supply unit provided to sequentially supply the plurality of connecting rods to the connecting rod moving unit, an image-capturing unit configured to be moved to a point where the foreign to substances are located to capture an image of the foreign substances, and a controller connected to the universal machine unit, the connecting rod moving unit, and the connecting rod supply unit to control operations thereof.

A deburring device includes a cylindrical body with a receptacle for receiving a pipe. The cylindrical body includes an abrasive surface provided in the receptacle, which is configured to simultaneously deburr at least two surfaces of a pipe inserted into the receptacle.

An embodiment provides a method for cleaning a surface, including: encapsulating a cleaning composition in a polymer material to form a compound, wherein the polymer material surrounds the cleaning composition; placing the compound in a location adjacent to the surface, wherein the location adjacent to the surface is a volume separated from an outer volume; dissolving the polymer material at a pH above a target value above the polymer material pH dissolution point, wherein the dissolving releases the cleaning composition; and cleaning the surface using the released cleaning composition. Other aspects are described and claimed.