Multiple on-line self-adaption defrosting control method and device

A control method and control device technology, applied in the direction of heating and ventilation control systems, applications, heating methods, etc., can solve the problems of long defrosting time and discounted heating effect of the whole mechanism, so as to prolong the life of the unit, achieve good heating effect, The effect of improving the heating effect

Active Publication Date: 2018-06-29
NINGBO AUX ELECTRIC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This not only leads to a long defrosting time for the entire module combination system, but also has the problem that the unit that defrosts first does not contribute to heating during the waiting time, and the heating effect of the whole machine is greatly reduced.

Method used

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  • Multiple on-line self-adaption defrosting control method and device
  • Multiple on-line self-adaption defrosting control method and device

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Embodiment Construction

[0040] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0042] Such as figure 1 The multi-line self-adaptive defrosting control method shown, the method includes,

[0043] Step S1, set the upper limit value of the defrosting time required for a multi-connected single unit to A, and the lower limit value to B, where A ranges from 8 to 12 minutes, and B ranges from 3 to 6 minutes;

[0044] Step S2. Obtain the time tmax of the unit with the longest defrosting time and the time tmin of the unit with the shortest defrosting time among the multiple units;

[0045] Step S3, compare tmax with A, tmin with B, and when tmax≥A, increase the compressor frequency of the corresponding unit; when tmin≤B, decrease the compressor frequency of the correspond...

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Abstract

The invention provides a multiple on-line self-adaption defrosting control method. The method comprises the steps that S1, the upper limit value of the needed time for defrosting of multiple on-line single units is set to be A, and the lower limit value of the needed time for defrosting of the multiple on-line single units is set to be B; S2, the time tmax used by the unit with the longest defrosting time in a multiple on-line and the time tmin used by the unit with the shortest defrosting time are obtained; S3, tmax and A as well as tmin and B are compared, and when tmax>=A, the frequencies of compressors of the corresponding units are increased; and when tmin<=B, the frequencies of the compressors of the corresponding units are decreased. According to the multiple on-line self-adaption defrosting control method, the heating effect of the multiple on-line can be improved, and the defrosting time of the whole multiple on-line is reduced.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a method and device for multi-connected self-adaptive defrosting control. Background technique [0002] Modular multi-units are generally composed of multiple units. Usually, after a period of heating mode, the multi-unit system will switch to defrosting mode to melt the frost on the outdoor unit to improve the heating effect of the multi-unit. . [0003] In the defrosting process of the existing multi-connected units, the defrosting frequency of each unit is fixed, but due to the influence of each unit’s working condition or frosting degree, the defrosting time of each unit is not exactly the same, and the unit that defrosts first It is necessary to wait until the defrosting of all units is completed, and exit the defrosting together. This not only leads to a long defrosting time of the entire module combination system, but also has the problem that the unit that defrosts first...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/42F24F11/61F24F11/64F24F11/86
Inventor 刘合心黄春任小辉苏运宇张坤坤
Owner NINGBO AUX ELECTRIC
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