Patent ID: 11879658
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 3:
4. The air-conditioning ventilation system of claim 3, wherein:
the ventilation device is configured such that the ventilation rate is adjustable in at least three levels including the standard, high that is higher than the standard, and low that is lower than the standard;
when the air-conditioning capacity of the air-conditioning apparatus is intermediate and a temperature of the refrigerant flowing through the heat exchanger of the air-conditioning apparatus is lower than or equal to a setting refrigerant temperature, the controller sets the ventilation rate of the ventilation device under the normal control during a heating operation to the high;
when the air-conditioning capacity of the air-conditioning apparatus is intermediate and the temperature of the refrigerant flowing through the heat exchanger of the air-conditioning apparatus is higher than the setting refrigerant temperature, the controller sets the ventilation rate of the ventilation device under the normal control during a heating operation to the standard; and
when the air-conditioning capacity of the air-conditioning apparatus is low or high, the controller sets the ventilation rate of the ventilation device under the normal control during a heating operation to the low.