This design is mainly used in live fish aquariums, and it is related to the low-pressure air generator bubble generator improved so that even if low-pressure air is introduced.This design has a center rod 10 having an inner passage 11 and an extended discharge hole 12 into which compressed air is injected, and a plurality of plate members 21 and a nonwoven fabric member alternately fitted to the center rod 10. 22 to the bubble generator 20 and a pair of compression members 30 and 30 'for compressing the bubble generator 20 on both sides, and to the threaded portions 13 and 13' on both sides of the central rod 10. As each includes the injection nipple member 40 and the nut cap 50 is fastened and has an inlet 42 and a fastening hole 43； A central rod (10) configured to have a angular surface portion (14) having a flat surface (14a) on an outer circumferential surface inside the both side thread portions (13, 13 ')； The bubble generating portion 20 having the plate member 21 and the nonwoven member 24 each having the angular through holes 22 and 25 penetrating through the angular surface portion 14 and having a diameter larger than the circumferential surface of the angular surface portion 14. )Wow； A pair of compression members are provided such that both the groove portions 31 and the small diameter through-holes 32 through which the screw portions 13 and 13 'are inserted are extended so that both ends of each of the surface portions 14 are not movable inwardly. It is to be configured to include (30,30 ').Bubble Generator, Bubble Generator for Low Pressure Air, Bubble Generator for Low Pressure Air Input, Bubble Generator for Live Fish, Bubble Generator for Live Aquarium, Bubble Generator이 고안은 주로 활어수족관에 쓰이는 것으로서 저압공기를 투입시켜도 기포가 발생될 수 있도록 개선된 저압공기투입용 기포발생기에 관한 것이다.이 고안은 압축공기가 주입되는 내부통로(11)와 연장된 토출공(12)을 가진 중심봉(10)과, 상기 중심봉(10)에 교대로 끼워지는 다수의 판부재(21)와 부직포부재(22)를 갖는 기포발생부(20) 및 상기 기포발생부(20)를 양측에서 압축되게 하는 한쌍의 압축부재(30,30')와, 상기 중심봉(10) 양측 나사부(13,13')에 각각 체결되고 입구(42)와 체결공(4
