The invention discloses an anti-frosting control method for a carbon dioxide heat pump air conditioner. The anti-frosting control method comprises the steps that whether the ratio (QN-Q0)/Q0 of the difference value between the initial theoretical heating capacity Q0 and the current theoretical heating capacity QN of a carbon dioxide heat pump air conditioner system and the initial theoretical heating capacity Q0 exceeds a set first threshold value or not is judged; under the condition that (QN-Q0)/Q0 does not exceed a set first threshold value, an initial frosting measurement index A0 and a current frosting measurement index AN are obtained; when the ratio AN/A0 of the AN to the A0 is larger than or equal to a set second threshold value, it is judged that the outdoor heat exchanger is not frosted; and when the ratio AN/A0 of the AN to the A0 is smaller than a set second threshold value, it is judged that the outdoor heat exchanger is frosted, and the carbon dioxide heat pump air conditioning system enters an anti-frosting mode or a defrosting mode. Correspondingly, the invention further discloses an anti-frosting control system for the carbon dioxide heat pump air conditioner.
本发明公开了一种二氧化碳热泵空调防结霜控制方法,其包括:判断二氧化碳热泵空调系统的初始理论制热量Q0与当前理论制热量QN的差值相对于初始理论制热量Q0的比值(QN‑Q0)/Q0是否超过设定的第一阈值;在(QN‑Q0)/Q0未超过设定的第一阈值的情况下,获取初始结霜衡量指标A0与当前结霜衡量指标AN;当AN与A0的比值AN/A0大于等于设定的第二阈值时,判断室外换热器未结霜;当AN与A0的比值AN/A0小于设定的第二阈值时,判断室外换热器结霜,二氧化碳热泵空调系统进入防结霜模式或化霜模式。相应地,本发明还公开了一种二氧化碳热泵空调防结霜控制系统。
Anti-frosting control method and system for carbon dioxide heat pump air conditioner
一种二氧化碳热泵空调防结霜控制方法及系统
2023-06-09
Patent
Elektronische Ressource
Chinesisch
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |
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