Title:
DEFROST CONTROL METHOD AND DEVICE FOR MULTI-SPLIT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/029457
Kind Code:
A1
Abstract:
The present disclosure relates to the technical field of multi-split control, and provides a defrost control method for a multi-split system, and the system. The method comprises: under the condition that the multi-split system satisfies a defrost condition, determining whether the heat absorption and defrosting capability of a started and operated refrigeration indoor unit is greater than or equal to a preset value; and under the condition that the heat absorption and defrosting capability of the started and operated refrigeration indoor unit is greater than or equal to a preset value, controlling an outdoor unit heat exchanger to be switched from an evaporator to a condenser, so that a refrigerant recovers the heat absorbed by the refrigeration indoor unit, provides the heat for the outdoor unit heat exchanger for defrosting, and provides the heat for a heating indoor unit heat exchanger for heating. Therefore, during the defrosting of an outdoor unit, the heating indoor unit heat exchanger serves as a condenser, so that a large temperature fluctuation of a heated room where the heating indoor unit is located can be avoided, and the multi-split system can perform defrosting on the outdoor unit heat exchanger on the basis that there is no large temperature fluctuation of the heated room where the heating indoor unit is located.
Inventors:
MA XIHUA (CN)
WANG MINGREN (CN)
WANG XINLI (CN)
LIANG XIN (CN)
HUANG JINYUAN (CN)
WANG MINGREN (CN)
WANG XINLI (CN)
LIANG XIN (CN)
HUANG JINYUAN (CN)
Application Number:
PCT/CN2022/083159
Publication Date:
March 09, 2023
Filing Date:
March 25, 2022
Export Citation:
Assignee:
GD MIDEA HEATING & VENTILATING EQUIPMENT CO LTD (CN)
HEFEI MIDEA HEATING & VENTILATING EQUIPMENT CO LTD (CN)
HEFEI MIDEA HEATING & VENTILATING EQUIPMENT CO LTD (CN)
International Classes:
F24F11/42; F24F11/41; F24F11/65; F24F11/79; F24F110/10
Foreign References:
| CN111765595A | 2020-10-13 | |||
| CN204187886U | 2015-03-04 | |||
| CN106765688A | 2017-05-31 | |||
| CN109458699A | 2019-03-12 | |||
| CN110553346A | 2019-12-10 | |||
| CN110500713A | 2019-11-26 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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