| 摘要 |
PROBLEM TO BE SOLVED: To improve the heating efficiency and the space efficiency by applying the insulating coating around a resistance wire spirally wound on a heater core, and forming a lead wire integrated cord-shaped heater consisting of a non-heating part wound by a conductor, and a heating part not wound by a conductor, between the heater core and the resistance wire. SOLUTION: A lead wire integrated cord-shaped heater 30 has a non-heating part 11 formed by fixing a conductor such as a copper foil 10 or the like between a heater core 6 as a part of a heating part 12 and a resistance wire 7 by a covering method or the like, and the heating part 12 not wound by the copper foil 10 in a state that the non-heating part 11 and the heating part 12 are integrally formed without a connecting part. As a material of an insulating coating, devinyl chloride is preferably used, and the lead wire integrated cord-shaped heater is mounted between a plurality of adjacent storerooms of different temperatures. The heater is free from the connecting part, which dispenses with a relief part of a heat insulating material, reduces the cost for processing and molding, and prevents the firing caused by the leakage of a flammable coolant from the connecting part in a refrigerator using the flammable coolant.
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