Abstract: An air supply device and a control method are disclosed. Different types of filter assemblies can be mounted in the air supply device, each filter assembly includes a filter screen, and the types and/or the quantities of the filter screens of filter assemblies are different. The control method includes: receiving an air supply starting instruction, and obtaining the type of a current filter assembly; obtaining a preset rotating speed corresponding to the type of the current filter assembly; and driving a fan of the air supply device to rotate at the preset rotating speed.

Abstract: An air conditioner and a data transmission method based on power line communication therefor, and a storage medium are provided. According to the method, a working parameter is acquired by an indoor unit; if it is determined that the working parameter meets a set condition, a communication interval is adjusted through an outdoor unit from a first communication interval to a second communication interval; and communication data is sent to the outdoor unit on the basis of the second communication interval and by means of a power line. In order to send the communication data to the outdoor unit, the communication data is modulated by the indoor unit into multiple sub-carrier signals and the sub-carrier signals are coupled to the power line. Each sub-carrier signal corresponds to a different frequency band, and the first communication interval is larger than the second communication interval.

Abstract: A power line communication-based pairing method and device for an air conditioner, and a storage medium are provided. Based on a pairing request instruction, A CCO module on an indoor side selects an STA module to be paired, in a power line network, for use as a pairing object. The CCO module sends pairing request information to the power line network. The STA module receives the pairing request information. If the STA module determines that identification information thereof exists in the pairing request information, the STA module establishes a pairing relationship with the CCO module. The STA module sends pairing feedback information to the power line network. The CCO module receives the pairing feedback information. If the CCO module determines that the identification information thereof exists in the pairing feedback information, the CCO module determines that the pairing is successful and establishes a pairing relationship with the STA module.