| 摘要 |
An indoor unit includes: a casing; a heat exchanger through which a flammable refrigerant flows; a fan; a detection sensor detecting a leak of the flammable refrigerant; a warning device emitting a warning about a leak of the flammable refrigerant; a control unit controlling operations of the fan and the warning device; and an operation device inputting stop commands for the fan and the warning device to the control unit based on its manual operation. Upon detection of a leak of the flammable refrigerant by the detection sensor, the control unit starts up the fan on condition that the fan is at a stop, starts up the warning device, disregards a stop command for the fan by the operation device, and permits a stop command for the warning device by the operation device. As a result, a user is enabled to arbitrarily stop a warning started based on occurrence of a refrigerant leak. |
| 主权项 |
1. An indoor unit comprising:
a casing; a heat exchanger through which a flammable refrigerant flows; a fan; a detection sensor detecting a concentration of the flammable refrigerant in air to detect a leak of the flammable refrigerant, with such a placement that the heat exchanger, the fan and the detection sensor are contained in the casing, the detection sensor being positioned on a downstream side of the heat exchanger with respect to an air flow generated by the fan; a warning device emitting a warning about a leak of the flammable refrigerant; a control unit controlling operations of the fan and the warning device; and an operation device inputting a stop command for the fan and a stop command for the warning device to the control unit based on a manual operation thereof, wherein upon detection of a leak of the flammable refrigerant by the detection sensor, the control unit starts up the fan on condition that the fan is at a stop while letting the fan continue operating on condition that the fan is operating, starts up the warning device, disregards a stop command for the fan by the operation device, and permits a stop command for the warning device by the operation device. |
