Multi-Unit Air Conditioning System And A Controlling Method Of Multi-Unit Air Conditioning System

Patent metadata

Field	Value
Publication number	US-2016363335-A1
Application number	US-201514754579-A
Country	US
Kind code	A1
Filing date	Jun 29, 2015
Priority date	Jun 9, 2015
Publication date	Dec 15, 2016
Grant date	—

Abstract

A controlling method of a multi-unit air conditioning system in the present disclosure includes: S 1 : sending a first selection signal, or a second selection signal; S 2 : controlling the multi-unit air conditioning system to operate under a first control mode according to the first selection signal; S 3 : controlling the multi-unit air conditioning system to operate under a second control mode according to the second selection signal; S 4 : receiving a mode-on signal; S 5 : determining whether a second operating mode is the same as the first operating mode, if no, entering step S 6 ; S 6 : turning on an indoor-unit fan of the first indoor unit and sending a mode conversion signal to the outdoor-unit controller; S 8 : converting an operating mode of the outdoor unit; S 9 : controlling the first indoor unit to operate under the first operating mode; S 10 : controlling operation of the second indoor unit according to the parameters of the first operating mode.

First claim

What is claimed is:

1 . A multi-unit air conditioning system, comprising an outdoor unit, a first indoor unit and a second indoor unit, the outdoor unit comprising an outdoor-unit controller and a selector, the first indoor unit comprising a first indoor-unit controller, the second indoor unit comprising a second indoor-unit controller;
the selector being configured to send a first selection signal or a second selection signal, the outdoor-unit controller being configured to control the outdoor unit, the first indoor-unit controller and the second indoor-unit controller to operate under a first control mode according to the first selection signal; the outdoor-unit controller being configured to control the outdoor unit, the first indoor-unit controller and the second indoor-unit controller to operate under a second control mode according to the second selection signal; the first indoor-unit controller being configured to receive a mode-on signal, the mode-on signal being used to turn on a first operating mode of the first indoor unit; the outdoor-unit controller being configured to determine whether a second operating mode under which the second indoor unit operates is the same as the first operating mode; under the second control mode, if no, the first indoor-unit controller being configured to turn on an indoor-unit fan of the first indoor unit and send a mode conversion signal to the outdoor-unit controller; the outdoor-unit controller being configured to convert an operating mode of the outdoor unit according to the mode conversion signal; when mode conversion of the outdoor unit is complete, the first indoor-unit controller being configured to control the first indoor unit to operate under the first operating mode, and send parameters of the first operating mode to the second indoor-unit controller; the second indoor-unit controller being configured to control operation of the second indoor unit according to the parameters of the first operating mode; if yes under the second control mode, the first indoor-unit controller being configured to control the first indoor unit to operate under the first operating mode.

2 . The multi-unit air conditioning system of claim 1 , wherein when the mode conversion of the outdoor unit is complete, the outdoor-unit controller is configured to send a first complete signal to the first indoor-unit controller;
the first indoor-unit controller is configured to determine that the mode conversion of the outdoor unit is complete according to the first complete signal.

3 . The multi-unit air conditioning system of claim 1 , wherein the outdoor unit comprises an outdoor-unit liquid pipe and a first gas pipe;
the first indoor unit comprises a first indoor-unit liquid pipe and a first indoor-unit gas pipe, the second indoor unit comprises a second indoor-unit liquid pipe and a second indoor-unit gas pipe; the outdoor-unit liquid pipe is connected to the first indoor-unit liquid pipe and the second indoor-unit liquid pipe; the first gas pipe is connected to the first indoor-unit gas pipe and the second indoor-unit gas pipe.

4 . The multi-unit air conditioning system of claim 1 , further comprising a mode conversion device, the mode conversion device comprising a conversion controller;
the outdoor-unit controller being configured to control the conversion controller to operate under the first control mode according to the first selection signal; the outdoor-unit controller being configured to control the conversion controller to operate under the second control mode according to the second selection signal; if the second operating mode is different from the first operating mode, the first indoor-unit controller being configured to send the mode conversion signal to the conversion controller; the conversion controller being configured to convert the operating mode of the mode conversion device according to the mode conversion signal; when the mode conversion of the mode conversion device is complete, the first indoor-unit controller being configured to control the first indoor unit to operate under the first operating mode, and send parameters of the first operating mode to the second indoor-unit controller.

5 . The multi-unit air conditioning system of claim 4 , wherein when the mode conversion of the outdoor unit is complete, the outdoor-unit controller is configured to send a first complete signal to the first indoor-unit controller;
when the mode conversion of the mode conversion device is complete, the conversion controller is configured to send a second complete signal to the first indoor-unit controller; the first indoor-unit controller is configured to determine that the mode conversion of the outdoor unit and the mode conversion device is complete according to the first complete signal and the second complete signal.

6 . The multi-unit air conditioning system of claim 4 , wherein the outdoor unit comprises an outdoor-unit liquid pipe, a first gas pipe and a second gas pipe;
the mode conversion device comprises an outdoor-unit liquid pipe port, a first gas pipe port, a second gas pipe port, a first indoor-unit liquid pipe port, a second indoor-unit liquid pipe port, a first indoor-unit gas pipe port and a second indoor-unit gas pipe port; the first indoor unit comprises a first indoor-unit liquid pipe and a first indoor-unit gas pipe, the second indoor unit comprises a second indoor-unit liquid pipe and a second indoor-unit gas pipe; the outdoor-unit liquid pipe is connected to the outdoor-unit liquid pipe port, the first gas pipe is connected to the first gas pipe port, the second gas pipe is connected to the second gas pipe port; the first indoor-unit liquid pipe port is connected to the first indoor-unit liquid pipe, the second indoor-unit liquid pipe port is connected to the second indoor-unit liquid pipe, the first indoor-unit gas pipe port is connected to the first indoor-unit gas pipe, the second indoor-unit gas pipe port is connected to the second indoor-unit gas pipe.

7 . The multi-unit air conditioning system of claim 1 , wherein the first indoor unit comprises an indicator;
if the second operating mode is different from the first operating mode, the first indoor-unit controller is configured to turn on the indicator.

8 . The multi-unit air conditioning system of claim 1 , wherein parameters of the first operating mode comprise a set temperature and a fan speed.

9 . A controlling method of a multi-unit air conditioning system, the multi-unit air conditioning system comprising an outdoor unit, a first indoor unit and a second indoor unit, the outdoor unit comprising an outdoor-unit controller and a selector, the first indoor unit comprising a first indoor-unit controller, the second indoor unit comprising a second indoor-unit controller, the controlling method comprising following steps of:
S 1 : the selector sending a first selection signal, and entering step S 2 , or the selector sending a second selection signal and entering step S 3 ; S 2 : the outdoor-unit controller controlling the outdoor unit, the first indoor unit and the second indoor unit to operate under a first control mode according to the first selection signal; S 3 : the outdoor-unit controller controlling the outdoor unit, the first indoor unit and the second indoor unit to operate under a second control mode according to the second selection signal, and entering step S 4 ; S 4 : the first indoor-unit receiving a mode-on signal, the mode-on signal being used to turn on a first operating mode of the first indoor unit, and entering step S 5 ; S 5 : the outdoor-unit controller determining whether a second operating mode under which the second indoor unit operates is the same as the f

Assignees

• Gd Midea Heating & Ventilating Equipment Co Ltd
• Midea Group Co Ltd

Inventors

• Xiong Meibing
• Xu Yongfeng
• Liang Zekun
• Ren Linxing
• Huang Wen

Classifications

• F24F11/54

  using one central controller connected to several sub-controllers · CPC title

• F24F11/65

  for selecting an operating mode · CPC title

• F24F11/89

  Arrangement or mounting of control or safety devices · CPC title

• F24F11/52

  Indication arrangements, e.g. displays · CPC title

• F24F11/62 Primary

  characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values · CPC title