PRESSURE CONTROL SYSTEM

• Main Authors: ASHIDA AKIRA, ISHIGAMORI ISAO, SUGAWARA SATOSHI, NITTA KEIJI, UCHIDA TAKESHI
• Format: Patent
• Language: English
• Published: 16.12.1997
• Edition: 6
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONTROLLING; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; PHYSICS; REGULATING; STORING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES; TRANSPORTING

PROBLEM TO BE SOLVED: To lessen the pressure difference between a closed space and the outside air pressure and miniaturize the device as a whole, by absorbing the pressure change of the closed space and keeping it in a certain fine positive pressure, owing to the volumetric chance caused by the movement of the airtight container connected to the closed space, necessitating the protection against the pressure change in the space. SOLUTION: A pressure control system to examine the circulation of substances by plants is constituted of a plurality of rubber buffers 200 absorbing the ordinary outside air pressure change and the pressure change of a plant- cultivation section 100 constituted of a closed space completely cut off from the outside air, by the volumetric change of the movement thereof and a pipe 110 connecting the plant-cultivation section 100 and the rubber buffers 200. The rubber buffer 200 made of chloroprene rubber in which nylon fibers are woven to have flexible and light-weight characteristics absorbs the pressure change of the plant-cultivation section 100 by increasing or dectreasing the volume in a fine pressure difference between the presure in the section and the outside air pressure and keeps the section in a fine positive pressure and prevents the penetration of the outside air.