TH38415A - Jet turbine And flap system for the same - Google Patents

Abstract

DC60 (10/10/43) Jet turbine type exhaust channels Will actually be created Which will reduce noise emission Low frequency to the outside There is no amplification, turbulence of the high-velocity exhaust flow or pressure oscillation created in a jet turbine. At least part of the wall of the exhaust port Jet turbines (3,5) are constructed with noise-transmitting material (36,56) to allow low-frequency noise of 10 Hz or less to pass through sufficiently. In addition, noise-transmitting material is also made. one Or more of a porous material Perforated thermal insulation material A mesh with considerable flow resistance, film or cloth material, in addition, sound transmission material is supported by perforated sheet or frame. Where the material transmits sound It is used exclusively for the exhaust chimney (5). The exhaust chimney (5) is supported by a layer structure (11). In addition, the soundproof panel (12) is attached to the layer structure (11). Split between The exhaust radiators are separated from the exhaust channels of the jet turbine. And exhaust channels, the jet turbine Created with sound transmission materials To allow low-frequency noise, several 10 Hz or less, to pass sufficiently through the jet turbine exhaust chambers. Will actually be created Which will reduce noise emission Low frequency to the outside There is no turbulence amplification, high velocity exhaust or shortening of the pressure generated in a jet turbine. At least part of the wall of the exhaust port Jet turbines (3.5) are constructed with sound-transmitting material (36.56) to allow low-frequency noise of 10 Hz or less to pass through sufficiently. In addition, sound transmission material is made with one. Or more of a porous material Perforated thermal insulation material High flow resistance mesh, film or fabric materials are also supported by perforated sheet or frame. Where the material transmits sound It is used exclusively for the exhaust chimney (5). The exhaust flap (5) is supported by a layer structure (11). In addition, the soundproof panel (12) is attached to the layer structure (11). Split between The exhaust radiator is separated from the jet turbine exhaust. And exhaust channels, the jet turbine Created with sound transmission materials To allow low frequency noise of 10 Hz or less to pass through sufficiently.

Claims (9)

1. Exhaust channel of jet turbine. With a wall for defining the exhaust channel for Exhaust emissions of a jet turbine Where at least one part of the side wall will be built With sound transmission material To allow low-frequency noise of 40Hz or less to pass sufficiently. 2. Exhaust channel of jet turbine According to claim 1, where the material transmits such noise At least one material was selected from a group consisting of porous materials, perforated mesh heat insulating materials that have considerable flow resistance. Film and fabric materials 3. Exhaust channel of jet turbine According to claim 2, where sound-transmitted material is subordinated. Received by perforated sheet or frame 4. Flap system for exhaust channels Jet turbine consists of an exhaust port, a jet turbine. For the exhaust emissions of the jet turbine, the extracted exhaust radiator From the exhaust channel of the aforementioned jet turbine And a flap that was separated between the said exhaust radiator and the aforementioned jet turbine exhaust port. Where the flap is made of pass material Sound to be transmitted sufficiently against low-frequency noise up to 40Hz or less. 5. Flap system for jet turbine exhaust chambers According to claim 4, where sound-transmitting material is made with at least one material. That were selected from the group consisting of porous materials, porous thermal insulation materials High flow resistance mesh, film and fabric materials. 6. Flap system for jet turbine exhaust channels. According to claim 5, where sound-transmitting material is supported by a perforated sheet or frame. 7. Exhaust Vent A jet turbine with a wall for defining an exhaust channel for the exhaust emissions of a jet turbine consists of an exhaust pipe connected to the vapor turbine housing. Throws through the exhaust diffuser And is provided with an internal exhaust silencer And a connected exhaust chimney With such muffler At least part of the wall will be constructed of sound-transmitting material. For sufficiently penetrating low frequency noise up to 40Hz or less. 8. A flap system for the exhaust port of a jet turbine consists of an exhaust pipe that is connected to the jet turbine body through an exhaust diffuser. And is provided with the exhaust silencer inside the bypass shaft that is connected to the exhaust pipe. The exhaust radiator is connected to a separate section from the said exhaust and the flap provided between the exhaust radiator. And the said exhaust pipe Where the flap closes It will be created with sound transmission material. To allow low-frequency noise up to 40Hz or less to pass through enough. 9. Exhaust Vent A wall-mounted jet turbine for defining the exhaust port for exhaust emissions of a jet turbine consists of The muffler is supplied with an internal exhaust silencer and an exhaust pipe connected to the exhaust pipe. Where the wall of the exhaust pipe has a structure with gas permeability and sound transmission. At least one part of the wall of the flue Will be built with sound transmission material To allow low-frequency noise up to 40Hz or less to pass through enough. And a layered structure was provided to surround and support the aforementioned exhaust flue 1 0. Exhaust channel of jet turbine According to claim 9, where the soundproof panel will be attached to At least one part of the side And the top of the frame built from the said layer structure