Thermoelectric refrigeration device for water cooling heat dissipating and air cooling heat dissipating

Abstract

The invention discloses a thermoelectric refrigeration device for water cooling heat dissipating and air cooling heat dissipating. The device comprises a vacuum chamber which is surrounded by a base and an upper cover, wherein hermetic window glass is arranged on the top wall of the upper cover; a vacuum air exhaust port is formed in the sidewall of the upper cover; a TEC (semiconductor thermoelectricity cooling) refrigerating plate, a CCD (Charge Coupled Device) chip, a cold finger, a temperature sensor, an electrical plug and a vacuum absorbent are arranged in the vacuum chamber; a water circulating system is arranged in the base; a finned heat dissipator is arranged at the lower part of the base. The device is simple in design structure, and is applicable to vacuum dewar flasks in an air cooling heat dissipating manner and a water cooling heat dissipating manner, so that a thermoelectric refrigeration dewar is applicable to various situations, and the heat dissipation manner can be flexibly used.

Description

technical field [0001] The invention relates to a photoelectric detector refrigeration technology, in particular to a thermoelectric refrigeration device for water cooling and air cooling for heat dissipation. Background technique [0002] In the field of photodetectors, many detectors are semiconductor detectors. Semiconductor detectors are particularly sensitive to temperature. Especially when detecting weak signals, it is necessary to remove the influence of temperature. For example, for scientific grade CCDs, at room temperature , the dark current will have a very large impact, and for weak signal input, the image quality will be very poor. Dark current refers to the thermal current generated when semiconductor photoelectric imaging devices work without light. Its existence will have a certain impact on the imaging quality of the photoelectric device. For example, when the dark current of the CCD device is particularly large (that is, the dark current peak), white spots...

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Problems solved by technology

Compressor refrigeration can be deeply refrigerated, and the refrigeration temperature can be much lower than -100°C, but its structure is relatively complicated and the cost is high, so it is not widely used

The advantage of liquid nitrogen refrigeration is that it has a large cooling capacity, but its disadvantage is that the liquid nitrogen tank has a large volume and requires frequent liquid nitrogen filling and maintenance. It cannot be used in some occasions where liquid nitrogen cannot be frequently filled.

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