Multi-connected air conditioner system, outdoor unit, defrosting control method and device thereof

A control method and outdoor unit technology, which is applied to air conditioning systems, heating methods, mechanical equipment, etc., can solve problems such as the failure of indoor units to continue heating, the drop of indoor temperature, and the impact on user experience, so as to improve user experience and improve user experience. Comfortable and guaranteed heating effect

Active Publication Date: 2019-12-10
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the existing air conditioner system is in defrosting operation, the indoor unit cannot continue to heat, which will cause the indoor temperature to drop, which seriously affects the user experience

Method used

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  • Multi-connected air conditioner system, outdoor unit, defrosting control method and device thereof
  • Multi-connected air conditioner system, outdoor unit, defrosting control method and device thereof
  • Multi-connected air conditioner system, outdoor unit, defrosting control method and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] When it is determined that any outdoor unit module needs to perform a defrosting operation, it further includes: controlling the heating operation of all outdoor unit modules except the any outdoor unit module in all outdoor unit modules.

[0075] In this embodiment, after controlling the opening of the first valve and the second valve in the outdoor unit module that needs to be defrosted, it is necessary to control all the remaining outdoor unit modules to operate in heating, so as to ensure the heating of the multi-connected air conditioner system. Effect.

Embodiment 2

[0077] When it is determined that any outdoor unit module needs to perform a defrosting operation, it further includes: controlling all outdoor unit modules except the any outdoor unit module that is currently in heating operation to continue heating operation.

[0078] In this embodiment, after controlling the opening of the first valve and the second valve in the outdoor unit module that needs to be defrosted, only the outdoor unit module currently in heating operation can be controlled to continue the heating operation.

Embodiment 3

[0080] When it is determined that any outdoor unit module needs to perform defrosting operation, it also includes: obtaining the capacity requirements of the multiple indoor units; according to the capacity requirements of the multiple indoor units, determining the number of outdoor unit modules that need heating operation ; According to the determined number of outdoor unit modules that need heating operation, control the working status of all outdoor unit modules except any one of the outdoor unit modules.

[0081] In this embodiment, by determining the number of outdoor unit modules required for heating operation according to the capacity requirement of the indoor unit, it can be ensured that the number of turned-on outdoor unit modules adapts to the capacity requirement of the indoor unit.

[0082] Further, the above-mentioned defrosting control method for a multi-connected air conditioner system further includes: after the defrosting of any outdoor unit module is completed...

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Abstract

The invention provides a multi-split air conditioner system as well as an outdoor unit, a defrosting control method and device thereof, wherein the outdoor unit comprises a plurality of outdoor unit modules which are connected in parallel with one another; each outdoor unit module is composed of a compressor, a four-way valve, an outdoor heat exchanger, a throttling part, a gas-liquid separator, a first stop valve, a second stop valve, a first valve and a second valve; the four ports of each four-way valve are connected with an outlet of the corresponding compressor, a first port of the corresponding outdoor heat exchanger, an inlet of the corresponding gas-liquid separator and the corresponding first stop valve respectively; a second port of each outdoor heat exchanger is connected to the corresponding second stop valve through the corresponding throttling part; an outlet of each gas-liquid separator is connected to an inlet of the corresponding compressor; the first end of each first valve is connected to the second port of the corresponding four-way valve; the second end of each first valve is connected to the fourth port of the corresponding four-way valve; the first end of each second valve is connected to the inlet of the corresponding gas-liquid separator; and the second end of each second valve is connected to a pipeline between the second port of the corresponding outdoor heat exchanger and the corresponding second stop valve.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, in particular, to an outdoor unit of a multi-connected air conditioner system, a multi-connected air conditioner system, a defrosting control method for a multi-connected air conditioner system, and a multi-connected air conditioner defrost control for the air conditioner system. Background technique [0002] At present, the user's requirements for the comfort of the air conditioner are increasing day by day, especially for the heating effect of the air conditioner. However, when the air conditioner system is heating and running in a high-humidity environment and a low-temperature environment, the outdoor heat exchanger is prone to frost. In order to ensure reliable and effective heating of the air conditioner system, the system needs to be defrosted after a period of heating Frost. However, when the existing air conditioner system is running in defrosting mode, the indoor unit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F1/06F24F3/06F24F11/41
CPCF24F1/06F24F3/065F24F11/30F24F11/41
Inventor 李宏伟许永锋梁伯启卜其辉董世龙吴晓鸿
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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