Multi-line system and its defrosting control method and device
The technology of a multi-connected system and control method, which is applied in the field of multi-connected systems, can solve the problems affecting the reliability of the multi-connected system, the inability to defrost the heat exchanger, and the poor defrosting effect, so as to improve the defrosting effect and improve the Reliability, the effect of high reliability
Active Publication Date: 2020-04-03
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The current defrosting method generally cannot defrost the heat exchanger in the outdoor unit in time, and the defrosting effect is poor
This may cause the accumulation of frost layer, affecting the use effect and reliability of the multi-line system
Method used
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[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0036] The multi-connected system and its defrosting control method and device according to the embodiments of the present invention will be described below with reference to the accompanying drawings.
[0037] figure 1 It is a flowchart of a defrosting control method for a multi-split system according to an embodiment of the present invention.
[0038] It should be noted that the multi-connected system in the embodiment of the present invention may include an outdoor unit and multiple indoor units, wherein the outdoor unit may ...
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The invention discloses a multi-split system as well as a defrosting control method and device for the multi-split system. An outdoor unit of the multi-split system comprises a first outdoor heat exchanger and a second outdoor heat exchanger. The method comprises the steps as follows: the middle temperature of the first outdoor heat exchanger and the middle temperature of the second outdoor heat exchanger are acquired; when the multi-split system runs in a heating mode, whether the defrosting starting conditions are met is judged according to the middle temperature of the first outdoor heat exchanger and the middle temperature of the second outdoor heat exchanger; if the defrosting starting conditions are met, the multi-split system is controlled to be switched to run in a defrosting mode for defrosting; when the multi-split system runs in the defrosting mode, whether the defrosting ending conditions are met is judged according to the middle temperature of the first outdoor heat exchanger and the middle temperature of the second outdoor heat exchanger; and if the defrosting ending conditions are met, the multi-split system is controlled to be switched to run in the heating mode. According to the method, the defrosting effect of the multi-split system can be improved.
Description
technical field [0001] The present invention relates to the technical field of multi-connection systems, in particular to a defrosting control method for a multi-connection system, a computer-readable storage medium, a defrosting control device for a multi-connection system, and a multi-connection system. Background technique [0002] A multi-line system with dual heat exchangers can meet greater heat exchange requirements. [0003] Due to external factors such as production differences, installation differences, and heat dissipation environment distribution, there may be refrigerant bias between the two heat exchangers of the outdoor unit. In heating operation, there may also be significant differences in the degree of frosting of the two heat exchangers. The current defrosting method generally cannot defrost the heat exchanger in the outdoor unit in time, and the defrosting effect is relatively poor. This may cause the accumulation of frost layer, affecting the use effec...
Claims
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IPC IPC(8): F24F3/06F24F11/42F24F11/65F24F11/61F24F11/38F25B49/02F25B47/02F25B13/00
CPCF24F3/065F24F11/42F25B13/00F25B47/025F25B49/02F25B2313/023F25B2313/02742F25B2600/25F25B2700/2116
Inventor 肖俊钊许永锋梁伯启王小明郭芳程吴敌
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD