Indoor and outdoor unit communication device and method, and direct-current power supply variable-frequency air conditioner

Abstract

The invention discloses an indoor and outdoor unit communication device and method, and a direct-current power supply variable-frequency air conditioner. The device comprises a first communication unit and a second communication unit, wherein in the first communication unit and the second communication unit, one communication unit is used as an indoor unit communication unit, and the other communication unit is used as an outdoor unit communication unit, optical coupling modules are arranged in the first communication unit and the second communication unit, The first communication unit and thesecond communication unit are connected through a power line and a communication line, a communication loop of the first communication unit and the second communication unit is formed by a cathode line in the power line and the communication line, and the first communication unit and the second communication unit realize half-duplex communication between the first communication unit and the second communication unit through the communication loop. According to the scheme, indoor and outdoor unit communication of the direct-current power supply variable-frequency air conditioner can be achieved, and extra hardware cost does not need to be increased.

Description

Technical field[0001]The present invention belongs to the technical field of air conditioning, and more particularly to an internal and external machine communication device, DC power supply, air conditioning, and an internal and external machine communication method thereof, in particular, in particular, in particular, an internal and outer machine of a DC power converted split air conditioner. Communication circuits, methods and air conditioners.Background technique[0002]With the high development of science and technology, DC supply electrical technology has an important role in today's waste, and today is increasingly strict. DC supply electrical technology can effectively prevent electric energy waste, improve the efficiency of electricity, which is very conforming to sustainable development. In recent years, my country has also followed the international trend, strengthened the research of DC supply electrical technology, combining DC supply electrical technology with household...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a communication device for internal and external units of a DC-powered variable-frequency air conditioner, a DC-powered variable-frequency air conditioner and a communication method for the internal and external units of a DC-powered variable-frequency air conditioner, so as to solve the problem that the DC-powered variable-frequency air conditioner adopts 485 communication and additionally increases hardware costs to achieve the effect of realizing the communication between the internal and external units of the DC-powered inverter air conditioner without additional hardware costs

Images