HEAT EXCHANGER

PROBLEM TO BE SOLVED: To suppress the occurrence of freezing and cracking in a heat exchanger whose surface temperature possibly falls below zero.SOLUTION: A heat exchanger comprises: a plurality of stacked tubes 1 in which refrigerant flows; and fins 2 joined to the tubes 1 and increasing an area o...

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Bibliographic Details
Main Authors SUGIMURA RYOHEI, SAITO MITSUKATSU, INAGAKI MITSUHARU
Format Patent
LanguageEnglish
Japanese
Published 22.10.2015
Subjects
ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES
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
PERFORMING OPERATIONS
TRANSPORTING
VEHICLES IN GENERAL
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To suppress the occurrence of freezing and cracking in a heat exchanger whose surface temperature possibly falls below zero.SOLUTION: A heat exchanger comprises: a plurality of stacked tubes 1 in which refrigerant flows; and fins 2 joined to the tubes 1 and increasing an area of heat exchange implemented between the refrigerant and air flowing around the tubes 1, a sectional shape of each fin 2 perpendicular to an air flow direction being a wavy form including a plurality of flat portions 21 generally in parallel to the air flow direction and vertex portions 22 connecting the adjacent flat portions 21, and a surface temperature of at least either the tubes 1 or the fins 2 possibly falls below zero, slits 27 are provided in the flat portions 21 of the fins 2, and the slits 27 are provided at least in one farthest part 26 or in a plurality of farthest parts 24 to 26 in a cross-section of each fin 2 perpendicular to a tube stacking direction if it is assumed that a region in which a smallest length L from a center line C2 between the adjacent flat portions 21 is a maximum as the farthest part 26. 【課題】表面温度が氷点を下回る可能性がある熱交換器において、凍結割れの発生を抑制する。【解決手段】内部に冷媒が流れる複数本積層されたチューブ１と、チューブ１に接合されてチューブ１周りを流れる空気との熱交換面積を増大させるフィン２とを備え、フィン２における空気流れ方向に垂直な断面形状は、空気流れ方向と略平行な複数の平面部２１と、隣り合う平面部２１間を繋ぐ頂部２２とを有する波形状であり、チューブ１およびフィン２の少なくとも一方の表面温度が氷点以下になる可能性のある熱交換器において、フィン２の平面部２１には、スリット２７が設けられており、フィン２におけるチューブ積層方向に垂直な断面において、隣り合う平面部２１間の中心線Ｃ２からの最短距離Ｌが最大となる部位を最遠部２６としたとき、スリット２７は、１つの最遠部２６、または、複数の最遠部２４〜２６の少なくとも１つに設けられている。【選択図】図７
Bibliography:Application Number: JP20140059756