AIR SEAL MEMBER AND AIR SEAL METHOD

• Main Authors: HAYASHI YUHO, KINUKAWA TOMOYA
• Format: Patent
• Language: English; Japanese
• Published: 12.12.2019
• Subjects: BLASTING; CYLINDERS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; THERMAL INSULATION IN GENERAL; WEAPONS

To provide an air seal member and an air seal method capable of improving seal performance by means of gas by suppressing air current in a direction reverse to a seal direction.SOLUTION: An air seal member 1 has a main body part 2 provided with an outer circumferential surface 2a and an inner circumferential surface 2b, an air feed hole 11 through which gas is poured is opened on the outer circumferential surface 2a, an exhaust hole 12 which is communicated with the air feed hole 11 on an inner part of the main body part 2 and allows the gas poured from the air feed hole 11 to be ejected therethrough is opened on the inner circumferential surface 2b, the gas is ejected from the exhaust hole 12 onto a gap C formed between an outer lateral surface Pa of a shaft member A and the inner circumferential surface 2b, thereby, the gap C is sealed, a squeeze part 13 which reduces a channel cross-section of the gas is formed on a channel 10 coming to the exhaust hole 12 from the air feed hole 11, the exhaust hole 12 is inclined toward one direction, of directions along the outer lateral surface Pa and, thereby, the gas is ejected in one direction.SELECTED DRAWING: Figure 2 【課題】シール方向と逆の方向への気流を抑制することにより気体によるシール性能を向上させることが可能となる、エアーシール部材、及び、エアーシール方法を提供する。【解決手段】エアーシール部材１は、外周面２ａと内周面２ｂとを備える本体部２を有し、外周面２ａには、気体が注入される給気孔１１が開口され、内周面２ｂには、本体部２の内部で給気孔１１と連通し、給気孔１１から注入された気体が噴出される排気孔１２が開口され、軸部材Ａの外側面Ｐａと内周面２ｂとの間に形成される隙間Ｃに、排気孔１２から気体が噴出されることにより、隙間Ｃをシールし、給気孔１１から排気孔１２にかかる流路１０には、気体の流路断面積を小さくする絞り部１３が形成され、排気孔１２が外側面Ｐａに沿った方向のうち一方向に向かって傾斜することにより気体が一方向に噴出される。【選択図】図２