Patents by Inventor Baitian Zhuo

Baitian Zhuo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210041148
    Abstract: An oil return control method for a multi-split air conditioner and a system accomplishing the same includes: calculating an average exhaust pressure within an oil return period Pd_AVG; determining whether the average exhaust pressure Pd_AVG?the set threshold Pdthreshold; if Pd_AVG?Pdthreshold, maintaining the multi-split air conditioner working in heating mode to ensure an acceptable oil return performance without affecting the air conditioning effect of indoor unit in heating mode; if Pd_AVG<Pdthreshold, switching the multi-split air conditioner to cooling mode, stopping a fan within those power-on indoor units and entering into a cooling oil return process and switching the multi-split air conditioner back to heating mode until the cooling oil return process ends.
    Type: Application
    Filed: January 28, 2019
    Publication date: February 11, 2021
    Applicants: QINGDAO HAIER AIR-CONDITIONING ELECTRONIC CO., LTD., HAIER SMART HOME CO., LTD.
    Inventors: DEFANG GUO, BAITIAN ZHUO, BIN SHI, SHAOJIANG CHENG, RUIGANG ZHANG, JUN WANG
  • Publication number: 20200256573
    Abstract: A comfort degree balance control system and method for multi-split air conditioner disclosed the present invention includes: obtaining a real-time ambient temperature and a target ambient temperature of each of rooms where an indoor unit provided is working; calculating a comfort degree deviation of each of the working indoor units; obtaining the maximum value offsetMAX and the minimum value offsetMIN among the comfort degree deviations of indoor units and calculating the difference A=offsetMAX?offsetMIN between the two; calculating an average comfort degree deviation; adjusting the amount of refrigerant flowing into working indoor units according to the difference A and the average comfort degree deviation, so as to reduce the difference A and balance the performance of the multi-split system.
    Type: Application
    Filed: July 19, 2018
    Publication date: August 13, 2020
    Inventors: BAITIAN ZHUO, BIN SHI, SHAOJIANG CHENG, RUIGANG ZHANG, JUN WANG
  • Publication number: 20200208890
    Abstract: A defrosting control method for a multi-split system is provided. A multi-split system comprises an outdoor unit and multiple indoor units. An expansion valve is provided on a connecting pipeline between each of the indoor units and the outdoor unit. When the expansion valve of each activated indoor unit is closed and the degree of opening of the expansion valve of each off-state indoor unit is less than or equal to a maximum set degree of opening, the system satisfies a defrosting requirement, and as a result the method controls the expansion valve of each activated indoor unit to remain closed, thereby resolving the issue of a dramatic temperature drop in a room having an activated indoor unit during defrosting and improving user satisfaction. The degree of opening of the expansion valve of a off-state indoor unit is Off_PLS, and is controlled such that Off_PLS=ALL_HP*Avg_PLS/Off_HP.
    Type: Application
    Filed: June 21, 2018
    Publication date: July 2, 2020
    Inventors: BAITIAN ZHUO, BIN SHI, SHAOJIANG CHENG, RUIGANG ZHANG, WANYING ZHANG
  • Publication number: 20200191430
    Abstract: The present disclosure discloses a method and a device for controlling an expansion valve. The method includes: when a first specified number of indoor units are in a non-working state, turning off expansion valves corresponding to all the indoor units in the non-working state; and turning on expansion valves corresponding to a second specified number of indoor units in the non-working state in turn according to a predetermined cycle.
    Type: Application
    Filed: February 3, 2020
    Publication date: June 18, 2020
    Inventors: Jun Wang, Shaojiang Cheng, Baitian Zhuo, Ruigang Zhang, Wenjun Shao, Wanying Zhang, Bin Shi
  • Publication number: 20200173677
    Abstract: The present disclosure disclosures a method and an apparatus for controlling a device. The method is applied in an indoor unit of a multi-split system and includes: when a temperature sensor fails, selecting other indoor units operating in the same operation mode with a current indoor unit from all indoor units; obtaining corresponding sensor parameters from temperature sensors of the indoor units operating in the same operation mode; and controlling the device according to the obtained sensor parameters.
    Type: Application
    Filed: February 3, 2020
    Publication date: June 4, 2020
    Inventors: Jun Wang, Shaojiang Cheng, Baitian Zhuo, Ruigang Zhang, Bin Shi