Title:
NEGATIVE PRESSURE WAVE GENERATOR
Document Type and Number:
Japanese Patent JP2018115479
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a negative pressure wave generator capable of generating a large negative pressure wave by enlarging an aperture area between a vacuum chamber aperture and a valve body and sufficiently reducing a tunnel micro atmospheric pressure wave.SOLUTION: A negative pressure wave generator 1 for cancelling out a tunnel micro atmospheric pressure wave W2 which is a positive pulse wave with a negative pressure wave W3 which is a negative pulse wave by using the negative pressure wave W3 generated in pulses to cause interference with the tunnel micro atmospheric pressure wave W2 projected as a pulse towards the outside from an exit 102 of a tunnel 100 comprises: a vacuum chamber 11 capable of maintaining a vacuum inside, a plurality of apertures 11a opened in the vacuum container 11, and a plurality of valve bodies 13 within the vacuum chamber 11 which respectively open and close the plurality of apertures 11a.SELECTED DRAWING: Figure 2
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Inventors:
TAKEI YOSHIKO
KUDO TOSHIFUMI
YAMAMOTO KENTA
KIMURA NORIYUKI
GOTO TAKASHI
YAMAMOTO TATSUYA
KUDO TOSHIFUMI
YAMAMOTO KENTA
KIMURA NORIYUKI
GOTO TAKASHI
YAMAMOTO TATSUYA
Application Number:
JP2017007014A
Publication Date:
July 26, 2018
Filing Date:
January 18, 2017
Export Citation:
Assignee:
MITSUBISHI HEAVY IND MACH SYSTEMS LTD
HIGASHI NIPPON RYOKAKU TETSUDO
HIGASHI NIPPON RYOKAKU TETSUDO
International Classes:
E01F8/00; E21F17/00; G10K11/178
Domestic Patent References:
| JPH0717899U | 1995-03-31 | |||
| JPH05209404A | 1993-08-20 | |||
| JPH05209405A | 1993-08-20 | |||
| JPH04182502A | 1992-06-30 |
Foreign References:
| WO2009057852A1 | 2009-05-07 |
Attorney, Agent or Firm:
Toshiro Mitsuishi
Mitsuishi Shunpei
Yasuyuki Tanaka
Hiroshi Matsumoto
Tetsuzo Yamada
Mitsuishi Shunpei
Yasuyuki Tanaka
Hiroshi Matsumoto
Tetsuzo Yamada