High-and-low-temperature environmental testing refrigerating system, high-and-low-temperature environmental testing box and control method

Abstract

The invention discloses a high-and-low-temperature environmental testing refrigerating system, a high-and-low-temperature environmental testing box and a control method. The high-and-low-temperature environmental testing refrigerating system comprises a low-temperature-level compressor, an evaporator, an adjusting valve, a condensation evaporator, a high-temperature-level compressor, a condenser and a controller for controlling the opening and closing states of the adjusting valve. The low-temperature compressor, the evaporator, the adjusting valve and the condensation evaporator are connected in series through pipelines to form a low-temperature loop, the high-temperature compressor, the condenser and the condensation evaporator are connected in series through pipelines to form a high-temperature loop, and the low-temperature loop is connected with the high-temperature loop in parallel. The invention further discloses the high-and-low-temperature environmental testing box and the control method of the high-and-low-temperature environmental testing box. Cold quantity generated by the high-and-low-temperature environmental testing refrigerating system is used sufficiently, waste of energy can not be caused, energy consumption is reduced, and therefore energy is saved.

Description

technical field [0001] The invention relates to the technical field of high and low temperature environmental test chambers, in particular to a high and low temperature environmental test refrigeration system, a high and low temperature environmental test chamber and a control method. Background technique [0002] High and low temperature environmental test equipment is often used to conduct environmental adaptability research tests on material products. Generally, high and low temperature environmental test equipment controls the test temperature of high and low temperature environmental test equipment by setting heating devices, so that the temperature tends to the set temperature. When the high and low temperature When the cooling capacity of the environmental test equipment is greater than the actual demand and the test temperature is lower than the set temperature, the test temperature is heated by the heating device to make the test temperature reach the set temperature...

AI Technical Summary

Problems solved by technology

[0002] High and low temperature environmental test equipment is often used to conduct environmental adaptability research tests on material products. Generally, high and low temperature environmental test equipment controls the test temperature of high and low temperature environmental test equipment by setting heating devices, so that the temperature tends to the set temperature. When the high and low temperature When the cooling capacity of the environmental test equipment is greater than the actual demand and the test temperature is lower than the set temperature, the test temperature is heated by the heating device to make the test temperature reach the set temperature. In this way, the energy consumption of the equipment will increase a lot, and the increased cost will also increase. Does not meet the purpose of energy conservation and emission reduction proposed by the state

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