EP0829323A2
Expired / Lapsed
EP
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Infrared heater
Assignee: Fujitsu Ltd
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Filing: 1994-10-25
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Granted: —
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Expires: 2014-10-25
Abstract
Abstract The present invention relates to an infrared heater which has a heat conduction plate (52) with a resistance heating element (53) disposed below the heat conduction plate (53) for heating the heat conduction plate (52). The upper surface of the heat conduction plate (52) has an infrared radiation layer (55) formed thereon, which receives heat from the heat conduction plate (52) and emits infrared radiation. The infrared radiation layer (55) is formed of alumina and has a relatively narrow temperature distribution over its surface. <IMAGE>
Inventors
- 👤 Seiki c/o Fujitsu Limited Sakuyama
- 👤 Hiroki c/o Fujitsu Limited Uchida
- 👤 Isao c/0 Fujitsu Limited Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 08:21
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/005; B23K1/0053; B23K1/08; B23K35/00; B23K35/02; B23K35/0222; B23K35/0244; B23K35/025; B23K35/22; B23K35/36; B23K35/3612; H; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/28; H05B3/283; H05B3/286; H05K; H05K3/00; H05K3/30; H05K3/32; H05K3/34; H05K3/3494; B23K2101/00; B23K2101/36; B23K2101/42; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49083
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
59 words
An infrared heater, comprising: a heat conduction plate; a resistance heating element disposed below the heat conduction plate for heating the heat conduction plate; and an infrared radiation layer formed on an upper surface of the heat conduction plate for receiving heat from the heat conduction plate and emitting infrared radiation; said infrared radiation layer being formed of alumina.
Claim 2
Dependent Claim
24 words
An infrared heater as set forth in claim 1, wherein said infrared radiation layer has a surface roughness of about 2 µm or less.
Claim 3
Dependent Claim
37 words
An infrared heater as set forth in claim 1 or claim 2, wherein said infrared radiation layer presents a radiation spectrum having a maximum peak in a wavelength range between about 5 µm and about 8 µm.
Claim 4
Dependent Claim
25 words
An infrared heater as set forth in claim 1, 2 or 3, wherein said heat conduction plate has a thermal conductivity of 5Ow/m·k or greater.
Claim 5
Dependent Claim
29 words
An infrared heater as set forth in any one of claims 1 to 4, wherein said heat conduction plate is made of aluminum, molybdenum, copper, graphite or aluminum nitride.
References Cited (Backward Citations)
No citation records indexed.
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