Provided are a rotational flow generator, a piping system, a semiconductor manufacturing apparatus, and a heat exchanger that enable the clogging of a pipe member to be more effectively prevented. A rotational flow generator 1 comprises a spray port 14a that can be attached to/removed from a pipe member 103 through which a first fluid flows, and that sprays a second fluid in a direction inclined with respect to the center axis line of the pipe member 103. A rotational flow generated by the rotational flow generator 1 can reduce the amount of accretion on an inner wall of the pipe member 103.

A transport device includes a transport pipe for transporting a material to be transported having at least one of a sheet piece, a fiber, and a powder, and a blower for generating an air flow in the transport pipe, the transport device transports the material to be transported by the air flow, in which the transport pipe has an introduction port into which the material to be transported is introduced, the air flow has a velocity difference in a direction orthogonal to a direction of the air flow in the transport pipe, and the introduction port is provided on a side where a velocity of the air flow is lower.

A tubular or cylindrical unit that creates a vortex effect with externally supplied pressurized fluid injected angularly within a transport structure is provided. Such a unit is utilized to either accelerate the vacuum and/or air conveyance of liquids, solid aggregates, and gases, reduce the energy required for such materials transport processes, or both. Such a result is achieved through the introduction of pressurized fluid via a plurality of injectors situated evenly around the circumference of the subject tube, pipe, and/or cylinder, and angled uniformly for an even pressure injection of fluid within the conveyance component thereof. In effect, through such injection of pressurized fluid, the overall transport system may be operated at significantly reduced cost while increasing the efficiency of overall vacuum and air conveyance systems simultaneously. The method of utilization of such a device is also encompassed within this invention.

A tubular or cylindrical unit that creates a vortex effect with externally supplied pressurized fluid injected angularly within a transport structure is provided. Such a unit is utilized to either accelerate the vacuum and/or air conveyance of liquids, solid aggregates, and gases, reduce the energy required for such materials transport processes, or both. Such a result is achieved through the introduction of pressurized fluid via a plurality of injectors situated evenly around the circumference of the subject tube, pipe, and/or cylinder, and angled uniformly for an even pressure injection of fluid within the conveyance component thereof. In effect, through such injection of pressurized fluid, the overall transport system may be operated at significantly reduced cost while increasing the efficiency of overall vacuum and air conveyance systems simultaneously. The method of utilization of such a device is also encompassed within this invention.

A fluid control system in pneumatic conveying ducts of powdered or granular material, comprising: a supply source of a pressurized gas for transporting said powdered or granular material; an injection line of said gas to put said source in fluid communication with a conveying duct inside which the material is conveyed; a self-regulating pressure valve arranged on the injection line between the source and said duct; a control member of the self-regulating valve to provide a control signal to said valve representing a pressure value, said valve maintaining the gas flow supplied in said duct constant; and a flow and flow rate meter, arranged on the injection line upstream of the valve to transmit a flow and flow rate value to said control member.

A fluid control system in pneumatic conveying ducts of powdered or granular material, comprising: a supply source of a pressurized gas for transporting said powdered or granular material; an injection line of said gas to put said source in fluid communication with a conveying duct inside which the material is conveyed; a self-regulating pressure valve arranged on the injection line between the source and said duct; a control member of the self-regulating valve to provide a control signal to said valve representing a pressure value, said valve maintaining the gas flow supplied in said duct constant; and a flow and flow rate meter, arranged on the injection line upstream of the valve to transmit a flow and flow rate value to said control member.

Disclosed is a system and method for conveying particulate material. A plurality of injector arrangements are arranged along the conveying pipeline, for injecting a continuous flow of conveying gas into the pipeline. Each injector arrangement is operable to increase the flow rate at which conveying gas is injected into the pipeline on of pressure conditions in the conveying pipeline indicative of locally decreased material permeability. Each injector arrangement comprises a piloted shut-off valve positioned between the flow rate adjustment arrangement and the conveying pipeline and operable to close in response to a received pilot signal indicative of a pressure condition in the conveying pipeline below a lower threshold pressure condition. The continuous flow of conveying gas injected by each of the injector arrangements prevents particulate material from entering any part of the injector arrangements, thereby reducing the risk of blockage of nozzles, injection pathway selection valves and the like. The continuous injection of conveying gas along the pipeline also maintains a degree of permeability particulate material in the pipeline and promotes stable conveying. The piloted shut-off valve of each injector arrangement is operable to independently detect a large pressure drop in the pipeline, and to close in order to store pressurised conveying gas in the injector arrangement and supply thereto.

Disclosed is a system and method for conveying particulate material. A plurality of injector arrangements are arranged along the conveying pipeline, for injecting a continuous flow of conveying gas into the pipeline. Each injector arrangement is operable to increase the flow rate at which conveying gas is injected into the pipeline on of pressure conditions in the conveying pipeline indicative of locally decreased material permeability. Each injector arrangement comprises a piloted shut-off valve positioned between the flow rate adjustment arrangement and the conveying pipeline and operable to close in response to a received pilot signal indicative of a pressure condition in the conveying pipeline below a lower threshold pressure condition. The continuous flow of conveying gas injected by each of the injector arrangements prevents particulate material from entering any part of the injector arrangements, thereby reducing the risk of blockage of nozzles, injection pathway selection valves and the like. The continuous injection of conveying gas along the pipeline also maintains a degree of permeability particulate material in the pipeline and promotes stable conveying. The piloted shut-off valve of each injector arrangement is operable to independently detect a large pressure drop in the pipeline, and to close in order to store pressurised conveying gas in the injector arrangement and supply thereto.

A tubular or cylindrical unit that creates a vortex effect with externally supplied pressurized fluid injected angularly within a transport structure is provided. Such a unit is utilized to either accelerate the vacuum and/or air conveyance of liquids, solid aggregates, and gases, reduce the energy required for such materials transport processes, or both. Such a result is achieved through the introduction of pressurized fluid via a plurality of injectors situated evenly around the circumference of the subject tube, pipe, and/or cylinder, and angled uniformly for an even pressure injection of fluid within the conveyance component thereof. In effect, through such injection of pressurized fluid, the overall transport system may be operated at significantly reduced cost while increasing the efficiency of overall vacuum and air conveyance systems simultaneously. The method of utilization of such a device is also encompassed within this invention.

A tubular or cylindrical unit that creates a vortex effect with externally supplied pressurized fluid injected angularly within a transport structure is provided. Such a unit is utilized to either accelerate the vacuum and/or air conveyance of liquids, solid aggregates, and gases, reduce the energy required for such materials transport processes, or both. Such a result is achieved through the introduction of pressurized fluid via a plurality of injectors situated evenly around the circumference of the subject tube, pipe, and/or cylinder, and angled uniformly for an even pressure injection of fluid within the conveyance component thereof. In effect, through such injection of pressurized fluid, the overall transport system may be operated at significantly reduced cost while increasing the efficiency of overall vacuum and air conveyance systems simultaneously. The method of utilization of such a device is also encompassed within this invention.