公开(公告)号：EP0577261A2

公开(公告)日：1994-01-05

申请号：EP93303995.0

申请日：1993-05-24

Applicant: NICOLET INSTRUMENT CORPORATION

Inventor： Drake, David M. ,  Woodward, Charles D. ,  Coffin, John M.

IPC: G01J3/10 ,  H05B3/40 ,  H05B3/48

CPC classification number: H01K13/00 ,  G01J3/108 ,  H01K1/28

Abstract: An infrared source for use in an infrared spectrometer includes an insulator core (19) having a containment cavity, an outlet port in communication with the containment cavity, and an electrically heated infrared element (41) mounted in the containment cavity (38) with a portion thereof facing the outlet port and with the walls of the containment cavity (38) closely spaced to the infrared element. The insulator core is formed of a ceramic fiber material which has excellent resistance to heat and very low thermal conductivity so that very little heat from the infrared element escapes from the insulator core except as infrared radiation through the outlet port. The insulator core is preferably mounted within a central cavity of a metal housing, and may be sealed off from the ambient atmosphere by an infrared transmissive window (24) sealed to an outlet opening in the housing. The electrical supply lines (15) from the infrared element may extend through an opening in the housing which is closed and sealed to inhibit the passage of gases from the ambient atmosphere into the interior of the housing. Where the infrared element is sealed off from the ambient atmosphere in this manner, potentially corrosive gases will be inhibited from reaching the hot infrared element. This containment of the infrared element within the insulator core allows the element to be maintained at a desired temperature for radiating infrared for use in analytical instruments such as infrared spectrometers, while consuming very low amounts of electrical power.

Abstract translation: 用于红外光谱仪的红外光源包括具有容纳腔的绝缘体芯，与容纳腔相连的出口，以及安装在容纳空腔中的电加热红外元件，其一部分面向出口并与 容纳腔的壁与红外元件紧密地间隔开。 绝缘体芯由陶瓷纤维材料形成，该陶瓷纤维材料具有优异的耐热性和非常低的热导率，使得除了通过出口的红外辐射之外，来自红外线元件的极少的热量从绝缘体芯逸出。 绝缘体芯优选地安装在金属壳体的中心空腔内，并且可以通过密封到壳体中的出口开口的红外透射窗口与环境大气密封。 来自红外元件的电源线可以延伸穿过壳体中的开口，该开口被封闭和密封以阻止气体从周围大气通过到壳体的内部。 红外线元件以这种方式与环境大气密封在一起，潜在的腐蚀性气体将被阻止到达热红外线元件。 绝缘体芯中的红外线元件的这种容纳允许将元件保持在期望的温度，以便在消耗非常低的电功率的情况下将红外线用于分析仪器例如红外光谱仪。

公开(公告)号：EP0577261A3

公开(公告)日：1994-06-01

申请号：EP93303995.0

申请日：1993-05-24

Applicant: NICOLET INSTRUMENT CORPORATION

Inventor： Drake, David M. ,  Woodward, Charles D. ,  Coffin, John M.

IPC: G01J3/10 ,  H05B3/40 ,  H05B3/48

CPC classification number: H01K13/00 ,  G01J3/108 ,  H01K1/28

Abstract: An infrared source for use in an infrared spectrometer includes an insulator core (19) having a containment cavity, an outlet port in communication with the containment cavity, and an electrically heated infrared element (41) mounted in the containment cavity (38) with a portion thereof facing the outlet port and with the walls of the containment cavity (38) closely spaced to the infrared element. The insulator core is formed of a ceramic fiber material which has excellent resistance to heat and very low thermal conductivity so that very little heat from the infrared element escapes from the insulator core except as infrared radiation through the outlet port. The insulator core is preferably mounted within a central cavity of a metal housing, and may be sealed off from the ambient atmosphere by an infrared transmissive window (24) sealed to an outlet opening in the housing. The electrical supply lines (15) from the infrared element may extend through an opening in the housing which is closed and sealed to inhibit the passage of gases from the ambient atmosphere into the interior of the housing. Where the infrared element is sealed off from the ambient atmosphere in this manner, potentially corrosive gases will be inhibited from reaching the hot infrared element. This containment of the infrared element within the insulator core allows the element to be maintained at a desired temperature for radiating infrared for use in analytical instruments such as infrared spectrometers, while consuming very low amounts of electrical power.

Abstract translation: 用于红外光谱仪的红外光源包括具有容纳腔的绝缘体芯，与容纳腔相连的出口，以及安装在容纳空腔中的电加热红外元件，其一部分面向出口并与 容纳腔的壁与红外元件紧密地间隔开。 绝缘体芯由陶瓷纤维材料形成，该陶瓷纤维材料具有优异的耐热性和非常低的热导率，使得除了通过出口的红外辐射之外，来自红外线元件的极少的热量从绝缘体芯逸出。 绝缘体芯优选地安装在金属壳体的中心空腔内，并且可以通过密封到壳体中的出口开口的红外透射窗口与环境大气密封。 来自红外元件的电源线可以延伸穿过壳体中的开口，该开口被封闭和密封以阻止气体从周围大气通过到壳体的内部。 红外线元件以这种方式与环境大气密封在一起，潜在的腐蚀性气体将被阻止到达热红外线元件。 绝缘体芯中的红外线元件的这种容纳允许将元件保持在期望的温度，以便在消耗非常低的电功率的情况下将红外线用于分析仪器例如红外光谱仪。