公开(公告)号：JPH07209169A

公开(公告)日：1995-08-11

申请号：JP1980894

申请日：1994-01-21

Applicant: NAT AEROSPACE LAB

Inventor： HAYASHI SHIGERU ,  SHIMIZU MORIO

IPC: G01N15/02 ,  G01N21/49

Abstract: PURPOSE:To measure the concentration, particle distribution, and its spatial distribution of a particle group in a relatively large space by scanning fluxes of laser beams in the vertical direction to the fluxes over the distribution region of the particle group to be measured. CONSTITUTION:Laser fluxes 2 from a laser 1 are focused at a focusing lens 3 and are made incident on a rotary reflection mirror 4. Reflected fluxes of laser 5 are swung by the rotation of the reflection mirror 4. Since the focus of an incidence lens 6 is located near the reflection mirror 4, the axis of emitted laser fluxes 9 are constantly maintained to be in parallel with the light axis of the lens 6. Then, parallel fluxes of light 9 are formed in a measurement space 8, thus scanning the space 8 according to the rotation of the reflection mirror 4. Diffraction light and strength-advance light are focused by a light reception lens 14 and are detected by a multiple photoelectric conversion sensor 12 laid out on the focusing surface. The position of the fluxes of light 9 in the space 8 is obtained from the time from the moment when a photo detector 10 provided at a scanning edge detected light and the rotary speed of the reflection mirror 4 by calculation.

公开(公告)号：JPH04313608A

公开(公告)日：1992-11-05

申请号：JP10518291

申请日：1991-04-11

Applicant: NAT AEROSPACE LAB

Inventor： HAYASHI SHIGERU ,  YAMADA SHUJI

IPC: F23C99/00 ,  F23D14/02 ,  F23D14/58

Abstract: PURPOSE:To ensure stabilized combustion in the use of a low-NOX burner independent of whether the burner burns a lean mixture or a mixture in the range from lean to rich in the fuel concentration. CONSTITUTION:A short flame 6 is produced from each of many mixture tubes 8, which are provided at an end of a combustion chamber 7 and through which fuel-air mixture flows in, and made to form together with other such flames a thin layer of flames as a whole; in addition, a flow of air 2 is supplied to a part immediately downstream from the layer of flames through air tubes 9 which are disposed in such a manner as to surround and be surrounded mutually with the mixture tubes 8 and which are extended downstream beyond the mixture tubes 8 so that the temperature of the combustion gas directly after the combustion is lowered through its mixing with the supplied air 2 and, as the result, reactions producing NOX are stopped or decelerated, hence a reduction in the NOX content in the emission.

公开(公告)号：JPS63215942A

公开(公告)日：1988-09-08

申请号：JP4977687

申请日：1987-03-04

Applicant: NAT AEROSPACE LAB ,  TONICHI COMPUTER APURIKEESHIYO

Inventor： HAYASHI SHIGERU ,  SAITO TAKASHI ,  HORIUCHI MASAJI ,  TAKAHASHI TADASHI

IPC: G01N15/02 ,  H01L31/02 ,  H01L31/0352

Abstract: PURPOSE:To achieve a higher measuring accuracy and higher resolutions, by arranging partially circular photoelectric conversion elements as displaced circumferentially to eliminate a gap substantially in radial direction mutually. CONSTITUTION:In a photoelectric conversion sensor 21, photoelectric elements 22 (22i, 22i+1...) are partially circular in shape and arranged as displaced circumferentially. For example, the elements are so arranged that one element is displaced by 180 deg. from the adjacent one 22 to achieve coincidence between the inner radius of an (i)-th element 22i and the outer diameter of an (i-1)-th element 22i+1 while the outer radius of the element 22i coincides with the inner radius of the (i+1)-th element 22i+1. In other words, as a scattered light intensity pattern is concentrically circular in symmetry with the optical axis, the fact that each element 22 takes the partially circular shape causes no inconvenience while it can eliminate a gap between the elements 22 radially in actual efficiency thereby achieving a higher measuring accuracy and higher resolutions.

公开(公告)号：DE60323417D1

公开(公告)日：2008-10-23

申请号：DE60323417

申请日：2003-03-05

Applicant: NAT AEROSPACE LAB OF JAPAN CHO

Inventor： HAYASHI SHIGERU ,  YAMADA HIDESHI

IPC: F23R3/18 ,  F23R3/20 ,  F23D14/70 ,  F23R3/12 ,  F23R3/14 ,  F23R3/28 ,  F23R3/32 ,  F23R3/34

Abstract: The present invention provides a gas turbine combustor which makes it possible to achieve both a high combustion efficiency and low NOx emissions characteristics over a wide output power range without using a device that can vary the flow rate of the air used for combustion, by burning a lean mixture using high-temperature burned gas. The gas turbine combustor 10 comprises pre-mixture injection tubes 16 which conduct a mixture of fuel and air into a combustion chamber 11. The mixture from the pre-mixture injection tubes 16 is injected toward burned gas 19a present on the downstream side of the flame 19, which is injected from burners 15 that open into the combustion chamber 11, and this mixture is mixed with the burned gas 19a. Even in a mixture which is leaner than the lower limit of inflammability, the radicals in the burned gas 19a are effective in initiating reactions, so that the combustion of the mixture can be started. Since the burned gas has a lower oxygen concentration than fresh mixture, and since the pre-mixture is dispersed in space, the generation of NOx can be suppressed.