一个经适当加工制成的密闭薄膜气囊,利用扩大空间的方法,使膜袋内外产生微小的压力差(10—50毫米水柱),在环架的辅助下,能稳定地内吸成抛物凹面,贴上金属化的柔性反射膜,便能聚集阳光,再配以基架和其它部件,即构成负压气囊式太阳灶(图1)。 A properly processed closed-cell airbag utilizes a method of expanding the space to create a slight pressure difference (10-50 mm of water) inside and outside the bag, with the aid of a ring frame, to stably attract the parabolic concave surface. On the metal of the flexible reflective film, will be able to gather sunlight, together with the base frame and other components, which constitute a negative pressure air bag solar cookers (Figure 1).