SAMPLE COLLECTING DEVICE SERVING ALSO AS FREEZING TEMPERATURE MEASURING AND ASSEMBLING METHOD FOR DEVICE CONCERNED

摘要

PURPOSE:To firmly fix a porous bottom plate and a housing and to completely prevent a silica tube from being broken by forming the porous bottom plate on which a center small hole into which the silica tube incorporating a thermocouple can be inserted is opened. CONSTITUTION:As for this device, a deoxidizing empty container 4 constituted by attaching a top plate 3 to a both end opening cylindrical body 2 in which an inflow port 1 is opened on the side wall, and a sample collecting container 10 which has a center small hole 5 and constituted by fitting externally a cylindrical body 9 to a porous bottom plate 8 fitted into the upper face of a housing 7 in a state that a silica tube 6 incorporating a thermocouple is inserted through the center small hole 5, and in which a stepped part 11 is formed on both side face peripheral edges are connected through a ceramic washer 12, and they are housed in a multiple tube 13. In this device, the cylindrical body 9 and the porous bottom plate are brought into contact with each other by the inner peripheral surface 15 of the cylindrical body 9 and the projecting end outer peripheral surface 16 of the porous bottom plate 8, therefore, even if a mechanical impact, etc., works and a clearance is generated between the inner peripheral surface 15 and the outer peripheral surface 16, no horizontal burr is generated, and also, it does not occur to shift in the diameter direction either, and the silica tube is prevented from being broken.