| 摘要 |
Inside a chamber (1) is/are treated and/or manufactured one or more objects at a pressure below the pressure surrounding the chamber. Amongst the type of treatment intended is that in which a material is sprayed onto a mould or a semi-finished article. An apparatus intended for the creation of a pressure difference (17) which belongs to or is included in the chamber is so arranged as to evacuate the air from the chamber once the latter is closed. Inside the chamber is arranged treatment or manufacturing apparatus, and the chamber is executed with at least one door (8) capable of being opened and closed. The chamber is constructed from a number of self-supporting elements (2) bearing against each other and exhibiting low weight. The respective elements have a length (1) which represents only a limited part of the corresponding extent (L) of the chamber. The chamber also comprises gable components or end components arranged or capable of being arranged in conjunction with the two outermost self-supporting elements (2', 2''). Pressure sealing organs are arranged against said elements and gable components or end components (8, 9). The elements, the components and the pressure sealing organs are so arrange that, in spite of the light structure of the elements, they are capable of withstanding a differential pressure between the inside and the outside of the chamber and generated by means of the pressure difference creating apparatus (17). |
