Indoor environment control unit and building environment control system

Abstract

The invention discloses an indoor environment control unit and a building environment control system. The indoor environment control unit comprises a first heat exchange core, a second heat exchange core and a controller, wherein the first heat exchange core is provided with a first heat exchange intake air control valve, a first heat exchange intake air outlet, a first heat exchange exhaust air control valve and a first heat exchange exhaust air outlet; the first heat exchange exhaust air outlet is provided with a first temperature sensor; the second heat exchange core is provided with a second heat exchange intake air control valve, a second heat exchange intake air outlet, a second heat exchange exhaust air control valve and a second heat exchange exhaust air outlet; the second heat exchange exhaust air outlet is provided with a second temperature sensor; and the controller is used for controlling the first heat exchange intake air control valve to reduce to a first preset intake air opening and open the second heat exchange intake air control valve to a second preset intake air opening when the temperature detected by the first temperature sensor is less than a preset value. The indoor environment control unit and building environment control system can operate normally during defrosting, and can also operate normally in an outdoor low-temperature environment.

Description

technical field [0001] Embodiments of the present invention relate to the field of HVAC technology, and in particular, to an indoor environment control unit and a building environment control system. Background technique [0002] Passive building refers to the use of various energy-saving technologies to construct the best building envelope and indoor environment, which greatly improves the building's thermal insulation performance and air tightness, and minimizes the building's heating and cooling needs. Existing passive buildings are equipped with ventilation systems that introduce outdoor air into the room and exhaust indoor air to the outside, thereby replacing the indoor air with fresh outdoor air to meet the indoor demand for fresh air quantity. [0003] The ventilation system in the prior art also uses the heat exchange core to adjust the indoor temperature. In the prior art, a heat exchange core is arranged in the unit box to realize the heat exchange of indoor and ...

AI Technical Summary

Problems solved by technology

[0003] The ventilation system in the prior art will also use the heat exchange core to adjust the indoor temperature. In the prior art, a heat exchange core is installed in the unit box to realize the heat exchange between indoor and outdoor air. When the temperature is too low, frost is very easy to occur, and once the heat exchange core is frosted, the entire unit may not be able to operate

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