The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 2023
Filed:
Jan. 21, 2019
Qingdao Haier Air-conditioning Electronic Co., Ltd, Shandong, CN;
Haier Smart Home Co., Ltd., Shandong, CN;
Defang Guo, Qingdao, CN;
Benhai Yuan, Qingdao, CN;
Ruigang Zhang, Qingdao, CN;
Bin Shi, Qingdao, CN;
Baitian Zhuo, Qingdao, CN;
Shaojiang Cheng, Qingdao, CN;
Jun Wang, Qingdao, CN;
Qingdao Haier Air-conditioning Electronic Co., Ltd, Qingdao, CN;
Haier Smart Home Co., Ltd., Qingdao, CN;
Abstract
A relay device and a multi-split control system that achieve reliable communication between an outdoor air conditioning unit and multiple indoor units under the condition that the length of a communication bus is limited. The system expands the communication distance by a cascade path formed by a plurality of relay devices. The cascade path transmits control signals sent by a master control device/a specific slave control device (i.e. a slave control device communicating with the master control device or certain relay device) to corresponding slave control devices one by one, and the corresponding slave control devices transmit the signals to the master control device/specific slave control device according to a response signal fed back by the control signal, where the relay devices may respectively communicate with a source node device and a destination node device on the basis of the master-slave type communication mode.