HEAT EXCHANGER AND FREEZER

• Main Authors: SAKAE SATORU, NISHIMURA TOMOHIRO
• Format: Patent
• Language: English; Japanese
• Published: 31.05.2018
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT EXCHANGE IN GENERAL; HEAT PUMP SYSTEMS; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

PROBLEM TO BE SOLVED: To provide a heat exchanger and a freezer capable of sufficiently forming a coated film by the electro deposition while reducing the heat stress produced between a heat exchanger tube and a tube support member.SOLUTION: A heat exchanger comprises: a header 69; a header connection heat exchanger tube 66a directly extending from the header; a flow diverter side heat exchanger tube 66b connected to the side opposite to the header 69 side in a coolant flow direction with respect to the header connection heat exchanger tube 66a; and a main tube plate 63 provided with a main tube plate side large sized open hole 63a to penetrate the header connection heat exchanger tube 66a and a main tube plate side compact size open hole 63b to penetrate the flow diverter side heat exchanger tube 66b and supporting the flow diverter side heat exchanger tube 66b. The clearance dimension between the header connection heat exchanger tube 66a and the main tube plate side large sized open hole 63a includes a part partially lager than the clearance dimension between the flow diverter side heat exchanger tube 66b and the main tube plate side compact size open hole 63b.SELECTED DRAWING: Figure 3 【課題】伝熱管と伝熱管支持部材との間に生じる熱応力を低減させつつ、電着塗装による塗膜を十分に形成させやすい熱交換器および冷凍装置を提供する。【解決手段】ヘッダ６９と、ヘッダから直接伸び出したヘッダ連結伝熱管６６ａと、ヘッダ連結伝熱管６６ａに対して冷媒流れ方向におけるヘッダ６９側とは反対側に接続されている分流器側伝熱管６６ｂと、ヘッダ連結伝熱管６６ａを貫通させる主管板側大型貫通孔６３ａおよび分流器側伝熱管６６ｂを貫通させる主管板側小型貫通孔６３ｂが設けられており分流器側伝熱管６６ｂを支持する主管板６３と、を備え、ヘッダ連結伝熱管６６ａと主管板側大型貫通孔６３ａとの隙間寸法が、分流器側伝熱管６６ｂと主管板側小型貫通孔６３ｂとの隙間寸法よりも大きい部分を有している。【選択図】図３