Ventilating equipment for high speed train |
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| 申请号 | US3563155D | 申请日 | 1968-12-27 | 公开(公告)号 | US3563155A | 公开(公告)日 | 1971-02-16 |
| 申请人 | JAPAN NATIONAL RAILWAY; HITACHI LTD; | 发明人 | ISHIZAWA MASAHIKO; FUJIOKA TAKIO; | ||||
| 摘要 | A ventilating equipment for high-speed trains in which the differential flow rate between supply-air and exhaust-air is kept within certain limits to minimize an unpleasant sensation on the part of the passengers, for example, as the train passes through a tunnel at high speeds. | ||||||
| 权利要求 | 1. A ventilating equipment for a high-speed train car which comprises: a supply-air equipment for supplying fresh air into the car from the outside thereof; and an exHaust-air equipment for exhausting dusty air from said car to the outside thereof, said supply-air equipment and exhaustair equipment each having a differential flow rate which is a value of not more than 0.0007 X V(cubic meters/minute mm.Aq. respectively, where V is the volume of the interior portion of the car in cubic meters. 2. A ventilating equipment according to claim 1, wherein said supply-air equipment and exhaust-air equipment each include a blower of the displacement type. 3. A ventilating equipment according to claim 1, wherein said supply-air equipment and exhaust-air equipment each includes a turbo-blower and flow-resistance valve means provided on either the suction side or the discharge side of each respective turbo-blower. 4. A method of limiting the rate of change of atmospheric pressure within the interior portion of a car of a rapidly moving train comprising the steps of: transferring air across the boundary between said interior portion of said car and the atmosphere external to said car at a predetermined flow rate so as to ventilate said car; and maintaining any change in the flow rate of said air being transferred to be no greater than 0.0007 V cubic meters/minute with respect to changes in the atmospheric pressure in millimeters of Aq. external to said car, where V is the volume in cubic meters of the interior portion of the car to be ventilated. 5. A method according to claim 4, wherein the step of transferring includes a the step of supplying fresh air into said car from the atmosphere external to said car. 6. A method according to claim 4, wherein the step of transferring includes the step of exhausting air from the interior portion of said car to the atmosphere external to said car. 7. A method according to claim 5, wherein the step of transferring further includes the step of exhausting air from the interior portion of said car to the atmosphere external to said car. |
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