Control method of multi-split system

A multi-connected system and control method technology, which is applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve the problem that the amount of refrigerant circulation is not fully provided, and the temperature of the user's room fluctuates greatly, which is not enough to provide enough Multi-refrigerant and other problems, to achieve accurate and reasonable refrigerant distribution

Active Publication Date: 2015-11-25
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Problems solved by technology

[0003] However, there are two problems in the adjustment method of the related technology: one problem is that when there are multiple indoor units working at the same time, when the set temperature of a certain user's room differs greatly from the actual temperature, it is not enough to provide enough refrigerant to make the room The temperature reaches the set temperature quickly, even if the outdoor unit compressor runs at a high frequency to provide more refrigerant circulation, the excess refrigerant circulation is not fully supplied to the indoor unit
[

Method used

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  • Control method of multi-split system
  • Control method of multi-split system
  • Control method of multi-split system

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Embodiment Construction

[0027] 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.

[0028] In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermedi...

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Abstract

The invention discloses a control method of a multi-split system. The method includes the following steps that S1, the indoor environment temperature T1 and the corresponding user set temperature Ts of each indoor unit are detected; S2, the difference value delta T between the indoor environment temperature T1 and the user set temperature Ts of each indoor unit is calculated; S3, the difference value delta T of each indoor unit is compared with the reference value, meanwhile the operation mode of each indoor unit is detected, and the opening of a corresponding flow rate regulating device is adjusted according to the comparison result in the corresponding operation mode. The control method of the multi-split system can meet different refrigerant amount requirements caused by different indoor environment temperatures T1 and user set temperatures Ts of different indoor units, meanwhile the indoor environment temperatures T1 and the user set temperatures Ts are directly used as calculation factors to calculate the opening of the flow rate regulation device, and it is guaranteed that refrigerant is distributed more accurately and reasonably.

Description

technical field [0001] The invention relates to the field of refrigeration, in particular to a control method for a multi-connected system. Background technique [0002] In the multi-connected system in the related art, the distribution of refrigerant among the internal units is controlled by the electronic expansion valve of the internal unit, and the opening of the electronic expansion valve between different internal units is adjusted by the control unit in comparison with the evaporator tube temperature of each internal unit. In terms of process, the opening of the electronic expansion valve of the internal unit with high tube temperature is opened to make more refrigerant flow through the evaporator to increase the evaporation capacity, and the opening of the electronic expansion valve of the internal unit with low tube temperature is reduced to reduce evaporation quantity. The ultimate goal of adjustment is to make the tube temperature of each internal unit evaporator...

Claims

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Application Information

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IPC IPC(8): F24F11/00
Inventor 刘清泉
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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