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A platform for research: civil engineering, architecture and urbanism
FREEZING PREVENTION HEATER
PROBLEM TO BE SOLVED: To provide a freezing prevention heater in which a temperature characteristic of a PTC element is stable and favorable, and which is easily inserted even in a narrow gap.SOLUTION: A freezing prevention heater 10 is provided along piping for water supply and/or for hot water supply, and it includes a PTC heater wire 1 for controlling a heat generation amount by detecting a temperature of the piping; and at least two layers of resin layers 4, 5 for covering the PTC heater wire 1. Out of the resin layers 4, 5, the second resin layer 5 which is the outermost layer and the first resin layer 4 which is located on the PTC heater wire side of the second resin layer 5 are made of different thermoplastic resin, and the first resin layer 4 is made of thermoplastic resin whose molding temperature is lower than that of the second resin layer 5. At this time, it is preferable that the second resin layer 5 is a fluorine resin layer, and it is preferable that the thickness of the second resin layer 5 is smaller than the thickness of the first resin layer 4.SELECTED DRAWING: Figure 1
【課題】ＰＴＣ素子の温度特性が安定かつ良好で、狭い隙間であっても挿入しやすい凍結防止ヒーターを提供する。【解決手段】給水用及び／又は給湯用の配管に沿って設けられる凍結防止ヒーター１０であって、その配管の温度を検知して発熱量を制御するＰＴＣヒーター線１と、そのＰＴＣヒーター線１を被覆する少なくとも２層の樹脂層４，５とを有し、その樹脂層４，５のうち、最外層の第２樹脂層５とその第２樹脂層５のＰＴＣヒーター線側に位置する第１樹脂層４とが異なる熱可塑性樹脂からなり、第１樹脂層４は第２樹脂層５よりも成形温度が低い熱可塑性樹脂からなるようにして上記課題を解決した。このとき、第２樹脂層５がフッ素系樹脂層であることが好ましく、第２樹脂層５の厚さが第１樹脂層４の厚さよりも小さいことが好ましい。【選択図】図１
FREEZING PREVENTION HEATER
PROBLEM TO BE SOLVED: To provide a freezing prevention heater in which a temperature characteristic of a PTC element is stable and favorable, and which is easily inserted even in a narrow gap.SOLUTION: A freezing prevention heater 10 is provided along piping for water supply and/or for hot water supply, and it includes a PTC heater wire 1 for controlling a heat generation amount by detecting a temperature of the piping; and at least two layers of resin layers 4, 5 for covering the PTC heater wire 1. Out of the resin layers 4, 5, the second resin layer 5 which is the outermost layer and the first resin layer 4 which is located on the PTC heater wire side of the second resin layer 5 are made of different thermoplastic resin, and the first resin layer 4 is made of thermoplastic resin whose molding temperature is lower than that of the second resin layer 5. At this time, it is preferable that the second resin layer 5 is a fluorine resin layer, and it is preferable that the thickness of the second resin layer 5 is smaller than the thickness of the first resin layer 4.SELECTED DRAWING: Figure 1
【課題】ＰＴＣ素子の温度特性が安定かつ良好で、狭い隙間であっても挿入しやすい凍結防止ヒーターを提供する。【解決手段】給水用及び／又は給湯用の配管に沿って設けられる凍結防止ヒーター１０であって、その配管の温度を検知して発熱量を制御するＰＴＣヒーター線１と、そのＰＴＣヒーター線１を被覆する少なくとも２層の樹脂層４，５とを有し、その樹脂層４，５のうち、最外層の第２樹脂層５とその第２樹脂層５のＰＴＣヒーター線側に位置する第１樹脂層４とが異なる熱可塑性樹脂からなり、第１樹脂層４は第２樹脂層５よりも成形温度が低い熱可塑性樹脂からなるようにして上記課題を解決した。このとき、第２樹脂層５がフッ素系樹脂層であることが好ましく、第２樹脂層５の厚さが第１樹脂層４の厚さよりも小さいことが好ましい。【選択図】図１
FREEZING PREVENTION HEATER
凍結防止ヒーター
MORIIZUMI HIDETO (author) / NAKAJO YUICHI (author) / KOIKE CHIAKI (author)
2017-04-27
Patent
Electronic Resource
Japanese