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Air cooling heat dissipation thermoelectric cooler (TEC) electric refrigeration charge coupled device (CCD) Dewar

An electric refrigeration and air-cooling technology, which is applied in refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc., to achieve the effect of large refrigeration temperature difference, fast cooling speed, fast and simple refrigeration

Inactive Publication Date: 2013-05-08
贾磊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Third, the liquid nitrogen Dewar requires daily maintenance

Method used

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  • Air cooling heat dissipation thermoelectric cooler (TEC) electric refrigeration charge coupled device (CCD) Dewar
  • Air cooling heat dissipation thermoelectric cooler (TEC) electric refrigeration charge coupled device (CCD) Dewar
  • Air cooling heat dissipation thermoelectric cooler (TEC) electric refrigeration charge coupled device (CCD) Dewar

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Embodiment

[0029] Such as figure 1 , 2 As shown, this embodiment includes a vacuum dewar 1, a CCD detector 3, a three-stage TEC refrigeration sheet 6, an air-cooled heat dissipation system 7, and a molecular sieve 5; figure 1 , 3 , 4, the air-cooled heat dissipation system 7 is composed of a heat sink 11 and a fan 14 connected. Such as figure 1 , 3 As shown, the vacuum dewar 1 includes a vacuum cavity 13, and the upper part of the vacuum cavity 13 is fixedly provided with an optical sealing glass 10 by a glass sealing pressure ring 8 and a glass O-shaped sealing ring 9 to achieve a sealing effect; the vacuum cavity A CCD detector 3, a molecular sieve 5 and a three-stage TEC cooling plate 6 are arranged inside the body 13, and the bottom is sealed by a heat sink 11; 13 is sealed and connected, and is connected to the hot end of the three-stage TEC refrigeration sheet 6 inside the vacuum chamber 13 for heat conduction; the lower end of the heat sink 11 is processed into a heat dissipa...

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Abstract

The invention provides an air cooling heat dissipation thermoelectric cooler (TEC) electric refrigeration charge coupled device (CCD) Dewar which comprises a vacuum Dewar (1), a CCD detector (3), a TEC, an air cooling heat dissipation system (7) and a molecular sieve (5), wherein the CCD detector (3), the TEC and the molecular sieve (5) are arranged inside the vacuum Dewar (1), a cold end of the TEC is in heat conductance with the CCD detector (3), a hot end of the TEC is in heat conductance with the air cooling heat dissipation system (7), and the air cooling heat dissipation system (7) is connected with a vacuum Dewar cavity body (1) in a sealed mode. Due to the fact that the TEC and the molecular sieve are used for maintaining the technologies such as vacuum and air cooling heat dissipation in a long term to ensure low temperature requirements of a CCD in operation of the system, the air cooling heat dissipation TEC electric refrigeration CCD Dewar has the advantages of being large in a heat sink heat dissipation surface area, fast in temperature cooling speed, low in absolute refrigeration temperature, long in vacuum maintaining time, small in size, less in quality, convenient to install and control, capable of observing at any angle, simple in operation and maintenance and capable of being directly used for imaging and photometry of a astronomical telescope CCD lens.

Description

technical field [0001] The invention is applied in the technical field of cooling of CCD detectors, and in particular relates to an air-cooled and heat-dissipating TEC electric cooling CCD Dewar. Background technique [0002] CCD vacuum dewars are usually installed on the imaging focal plane of astronomical telescopes, and are used to mount CCD detectors for imaging observations of celestial objects. At present, astronomical observation and research are pursuing farther and darker celestial objects, which requires the cooling components in the CCD Dewar to be able to deeply cool the CCD detectors. Generally, the cooling temperature must be as low as -40~-80°C for good performance. Suppress CCD dark current and thermal noise, and obtain high-quality images with high signal-to-noise ratio. [0003] In the traditional method, the CCD detector is set in a liquid nitrogen vacuum Dewar. The CCD in the Dewar is equivalent to the human eye. It is placed on the imaging focal plane o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B21/02
Inventor 贾磊
Owner 贾磊
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