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103. 发明专利

JPH1073000A TUNNEL DUST COLLECTING EQUIPMENT 失效
公开(公告)号：JPH1073000A
公开(公告)日：1998-03-17
申请号：JP25428597
申请日：1997-09-03
申请人： FUJI ELECTRIC CO LTD
发明人： NAKAMURA SHOGO , SASAMOTO TOSHIJI , MINOWA YOSHIHIRO
IPC分类号： E21F1/00 , E21F5/20
摘要： PROBLEM TO BE SOLVED: To accelerate mixing of purified air blown off from a blower with contaminated air in tunnel space in a ceiling installed type dust collecting equipment. SOLUTION: Upper space in a tunnel 1 is partitioned from lower space by a ceiling plate 5 to form a dust collecting chamber 2 with one end made the intake side 2a and with the other end made the supply side 2b. An electric dust collector 3 is installed in the dust collecting chamber 2, and blowers 4 are arranged on the supply side 2b to constitute a tunnel dust collecting equipment. In this case, a blast hole of the blower 4 is provided with a nozzle 13 turning a purified air blowoff direction slightly outward and downward from the center line of a tunnel. Discharge air from the blower 4 is thereby blown off into tunnel space at high speed through the nozzle 13, so that contaminated air in the tunnel space is entrained in blowoff air, and the purified air blown off outward and downward generates swirling flow in the tunnel 1 so as to accelerate mixing with the contaminated air.

106. 发明专利

JPH08218799A DUST COLLECTOR FOR TUNNEL CONSTRUCTION WORK 失效
公开(公告)号：JPH08218799A
公开(公告)日：1996-08-27
申请号：JP2160595
申请日：1995-02-09
申请人： KAJIMA CORP , NIPPON AIR FILTER
发明人： NOMA MASAHARU , MATSUKAWA HISATOSHI , YOKOTA YORIHAYA , NAKAMURA YOICHIRO , KAJI SHIGEHITO , TSURUTA MASAHIRO , OKAMOTO MASAYUKI , KONNO TAKAHIRO
IPC分类号： E21F5/20
摘要： PURPOSE: To return purified air into a tunnel by providing a dust collector which is simple in construction and has a large dust collecting capacity. CONSTITUTION: In a dust collector for tunnel construction work to remove dust and soot generated in the construction work of a tunnel, a dust removing means for purifying contaminated air in the tunnel is installed near a spot where dust is generated. The dust removing means has a filter device 1 and a fan 4, and purified air is sent back into the tunnel by the fan 4.

110. 发明专利

JPH047500A TUNNEL VENTILATION METHOD IN TUNNEL WORK 失效
公开(公告)号：JPH047500A
公开(公告)日：1992-01-10
申请号：JP10750490
申请日：1990-04-25
申请人： TOA HARBOR WORKS CO LTD
发明人： INOUE TAKAHIRO , KOBAYASHI HIROFUMI , YAMAZAKI KUNIAKI , MURAKAMI TAKAO
IPC分类号： E21F1/00 , E21F5/20 , F24F7/06
摘要： PURPOSE:To make it possible to perform proper air-delivery and exhaust by radiating laser light across a space in a tunnel, sensing damped light of the laser light, and controlling airflow of a contra fan commensurate with air- pollution in the tunnel. CONSTITUTION:A laser light source 7 and a light sensor 9 are arranged to a facing side, and the laser light source 7 is placed in the vicinity of a facing 6. After hat, laser light is radiated across an air polluted space in the tunnel from the laser light source 7, and it is reflected to a mirror 8. Then, damped light of the laser light is sensed by the light sensor 9. The airflow of the contrafan 13 is controlled by an airflow control panel 10 based on the damped laser light. According to the constitution, air-delivery and exhaust commensurate with the air-pollution can be surely made.

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