Heat exchange element with flame retardant and moisture permeable portions

• Main Authors: MASAYUKI TSUBAKI, JUNJI HARADA, HIDEMOTO ARAI, YOUICHI SUGIYAMA, KENZO TAKAHASHI, HISAO YOKOYA, MASARU TAKADA
• Format: Patent
• Language: English
• Published: 20.04.2005
• Edition: 7
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; HEAT EXCHANGE IN GENERAL; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; VENTILATING; WEAPONS

A heat exchange element 1 comprises flat partition members 2 having a base material 2a impregnated with a moisture absorbent 2b and are alternately laminated with corrugated spacing members 3 impregnated with a flame retardant. The moisture absorbent 2b does not overlap the flame retardant in the areas of the partition members 2 not in contact with the spacing members 3. Partition members 2 may be impregnated with a moisture absorbent 2b and a flame retardant, and may be bonded to the spacing members by a vinyl acetate adhesive. Base material 2a may be nonporous pulp fibres or a gas impermeable microporous base material having a polyvinyl alcohol filler applied to fill the pores. The moisture absorbent 2b may be an alkali metal salt such as lithium chloride and calcium chloride. The spacing members 3 may also be pulp fibres and the flame retardant may be a guanidine salt such as guanidine chloride and guanidine sulfamate. The heat exchange element 1 may be used in air conditioners and ventilators.