Terrestrial heat constant temperature control device

Abstract

The invention discloses a terrestrial heat constant temperature control device which comprises a constant temperature box body. A heat radiator is arranged in the constant temperature box body, a semiconductor cooler is embedded into the constant temperature box body and is connected with a control circuit, a heat collecting device connected with the semiconductor cooler is arranged on the outer surface of the constant temperature box body, the heat radiator, the semiconductor cooler and the heat collecting device form a first-stage heat pump system, the first-stage heat pump system is connected with a second-stage heat pump system, the second-stage heat pump system comprises a heat conduction device located on a temperature change layer and a heat exchange device located on a terrestrial heat constant temperature layer, and the heat conduction device and the heat exchange device are connected with the heat collecting device in sequence. A terrestrial heat source is supplied by the terrestrial heat constant temperature layer, heat energy input into the constant temperature box body is adjusted by the semiconductor cooler to achieve the constant temperature effect, temperature control precision is high, and the use range is wide.

Description

technical field [0001] The invention relates to the field of temperature control, in particular to a geothermal constant temperature control device using geothermal energy as a heat source. Background technique [0002] Precision instruments and meters installed outdoors have higher requirements on the installation environment, especially the influence of temperature on precision instruments and meters. Generally, it is difficult to provide a laboratory-like environment outdoors, which reduces the actual accuracy of instruments and meters after installation. In order to ensure the accuracy of precision instruments and meters installed outdoors, the existing technology uses low-temperature floating devices to design and manufacture precision instruments and meters to avoid the influence of temperature as much as possible, but this increases the difficulty of design and increases the cost; some of them use air-conditioning compressors For temperature control, provide an approx...

AI Technical Summary

Problems solved by technology

[0002] Precision instruments and meters installed outdoors have high requirements on the installation environment, especially the influence of temperature on precision instruments and meters. Generally, it is difficult to provide a laboratory-like environment outdoors, which reduces the actual accuracy of the instruments and meters after installation.

In order to ensure the accuracy of precision instruments and meters installed outdoors, the existing technology uses low-temperature floating devices to design and manufacture precision instruments and meters to avoid the influence of temperature as much as possible, but this increases the difficulty of design and increases the cost; some of them use air-conditioning compressors For temperature control, provide an approximately constant temperature working temperature environment for precision instruments and meters

However, the use of air-conditioning compressors will introduce vibration sources, which is strictly prohibited in the field of optical precision instruments, and the efficiency of using air-conditioning compressors for temperature control is greatly reduced when the outdoor temperature is lower than 0°C, because the air-conditioning compressors work for a while. The freezing of the machine will eventually lead to shutdown and failure to operate normally, and there are obvious limitations in the use of the environment

At the same time, the temperature control accuracy of using air conditioner compressors for temperature control is generally about 1°C-5°C, while high-precision optical instruments require a temperature control accuracy of nearly constant temperature + / -0.1°C. The current temperature control technology is difficult. Taking into account the above technical requirements

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