Car air conditioner refrigerant amount checking device

摘要

The present invention relates to a refrigerant amount confirmation device of a car air conditioner capable of accurately determining the appropriate amount of refrigerant injected into a refrigeration cycle, and is possible by measuring the refrigerant temperature passing through the inlet side and the outlet side of the evaporator. In a refrigeration cycle for automobiles having a compressor, a condenser, an expansion valve, and an evaporator, which are sequentially connected to allow a refrigerant to flow,;A temperature detection unit having a different color in the longitudinal direction is provided, and a temperature detection tape that changes color in response to temperature is attached to the inlet / outlet pipes of the evaporator to detect a difference in refrigerant temperature to determine whether the amount of refrigerant is appropriate. Judge.