| abstract |
An object of the present invention is to provide an air conditioner that can suppress the formation of a flammable concentration region in an indoor space even if a flammable refrigerant leaks. An air conditioner includes an indoor unit, and the indoor unit includes a blower fan, a suction port, an air outlet, and an up-and-down air direction plate provided at the air outlet. The enclosed amount is M [kg], the lower combustion limit concentration of the refrigerant is LFL [kg / m3], the floor area of the indoor space is A [m2], and the height of the outlet from the floor of the indoor space is Ho [ m] and the height of the ceiling surface from the floor surface of the indoor space is Hc [m], the enclosed amount M, the lower combustion limit concentration LFL, the floor area A, the height Ho, and the height Hc are LFL × A The relationship of x Ho ≦ M <LFL × A × Hc is satisfied, and when the leakage of the refrigerant is detected, the control unit operates the blower fan and sets the vertical wind direction plate upward. [Selection] Figure 6 |