Can adjust indoor air conditioning circulation within the outer loop
Household air conditioner or central air conditioning, no air outside circulation function, ventilation function is known as the fresh air system is separate, can be used with the central air conditioning and home air conditioning.
Central air conditioning. The split type air conditioner without ventilation function (outside fresh air and indoor air convection) only supply function, so want to open a window to facilitate air convection. Window air conditioner is convection air convection switch (device) don't have to open the window. Central air conditioning the residential air conditioning to inner loop cycle must attach device to cycle
With changing behavior of household air conditioner, just have the function of the outer loop. Circulate in general family expenses air conditioning only, and not the function of the outer loop. But in air with function of air conditioner, can introduce outdoor fresh air into the indoor, can have the function of the outer loop. Air conditioning units are usually used in confined space, long time, can make indoor air pollution, even no collateral in fresh air function of air conditioner, air conditioning after a period of time, it is best to open a window ventilated 5 ~ 10 minutes, to ensure the indoor air clean.
