Power supply method, device, external unit and internal unit of a multi-connected air conditioning system

A multi-connected air conditioner and power supply method technology, applied in space heating and ventilation, heating and ventilation control systems, heating and ventilation safety systems, etc., can solve problems such as long-distance communication power supply line loss, reduce control costs, and solve uncontrollable effect

Active Publication Date: 2020-08-14
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the embodiment of the present invention, a power supply method, device, external unit, and internal unit of a multi-connected air-conditioning system are provided to solve the problem of long-distance communication power supply line loss caused by the power supply of the external unit when the internal unit is powered off

Method used

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  • Power supply method, device, external unit and internal unit of a multi-connected air conditioning system
  • Power supply method, device, external unit and internal unit of a multi-connected air conditioning system
  • Power supply method, device, external unit and internal unit of a multi-connected air conditioning system

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Embodiment 1

[0071] figure 1 It is a flowchart of a power supply method for a multi-connected air-conditioning system according to an embodiment of the present invention, the method is executed in an external unit, such as figure 1 As shown, the method includes the following steps:

[0072] Step S101, detecting that the internal unit is powered off;

[0073] Step S102, sending a first control instruction to an indoor unit adjacent to the power-down indoor unit, so that the adjacent indoor unit supplies power to the power-down indoor unit. Wherein, the adjacent internal unit supplies power to the power-down internal unit at a preset safe voltage.

[0074] The multi-connected air-conditioning system in the embodiment of the present invention may also be called a multi-connected system.

[0075] In the embodiment of the present invention, when the power failure of the internal unit is detected, the first control instruction is sent to the internal unit adjacent to the power-down internal u...

Embodiment 2

[0111] Image 6 It is a flowchart of a power supply method for a multi-connected air-conditioning system according to an embodiment of the present invention, the method is executed in the internal unit, such as Image 6 As shown, the method includes the following steps:

[0112] Step S201, determine power-off;

[0113] Step S202, obtaining power supply from an adjacent indoor unit.

[0114] In the embodiment of the present invention, optionally, the step of obtaining power supply from an adjacent internal unit includes:

[0115] The power supply of the adjacent internal units is obtained from the bus; the bus connects the external units and at least one internal unit.

[0116] In the embodiment of the present invention, optionally, the step of determining power-off includes the steps of:

[0117] In the preset mode of taking power from the bus, it is activated by the external unit, and it is determined to be powered off.

[0118] In the embodiment of the present invention...

Embodiment 3

[0124] corresponds to figure 1 The power supply method for the multi-connected air-conditioning system introduced, this embodiment provides a power supply device for the multi-connected air-conditioning system, such as Figure 7 The unit shown consists of:

[0125] A detection module 70, configured to detect power failure of the internal unit;

[0126] The control module 72 is configured to send a first control instruction to an indoor unit adjacent to the power-down internal unit, so that the adjacent indoor unit supplies power to the power-down internal unit.

[0127] In the embodiment of the present invention, optionally, the control module 72 is specifically configured to send a first control instruction for supplying power to the bus to an internal unit adjacent to the power-off internal unit, so that the adjacent internal The bus is powered, and the power-down internal unit is powered from the bus; the external unit is connected to at least two internal units through t...

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Abstract

The invention discloses a power supply method, a power supply device, an outer machine and an inner machine of a multi-split air conditioning system. The method comprises the following steps that thepower failure of the inner machine is detected; and a first control instruction is sent to an inner machine adjacent to the inner machine subjected to the power failure, so that the adjacent inner machine supplies power to the inner machine subjected to the power failure. According to the method, the device, the outer machine and the inner machine, the problem that the loss of a long-distance communication power supply line is too large due to the fact that the outer machine supplies the power to the inner machine during the power failure of the inner machine can be effectively solved; the problem that an electronic expansion valve cannot be controlled due to the power failure of the inner machine can be effectively solved; and meanwhile, the control cost for supplying the power to the inner machine can be effectively reduced.

Description

technical field [0001] The present invention relates to the field of unit technology, in particular to a power supply method, device, external unit and internal unit of a multi-connected air conditioning system. Background technique [0002] The power supplies of the internal and external units of the multi-connected air-conditioning system are basically separately powered. In some places of use, each internal unit of the multi-connected system is equipped with an independent power switch. According to the habits of different users, the user may cut off the power supply when going out, which will cause some internal units in the system to be powered off, and Some internal units are running. [0003] When the internal unit is powered off, the electronic expansion valve of the internal unit is in an uncontrollable state, which will cause "compressor liquid return" in the multi-connected system, "the cooling / heating effect of the entire multi-connected system will deteriorate"...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/38F24F11/70
CPCF24F11/38F24F11/70
Inventor 陈葆荣玉维友
Owner GREE ELECTRIC APPLIANCES INC
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