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Multi-split air conditioner system and control method and control device thereof

A multi-line system and control method technology, applied in the direction of refrigerators, refrigeration components, mechanical equipment, etc., can solve the problems of energy saving, poor comfort, and cycle lengthening, so as to improve comfort, reduce adjustment time, and control opening smart effect

Inactive Publication Date: 2019-04-02
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, this process will be repeated every time the air-conditioning system is restarted, that is, it will start again with a fixed initial opening, which not only causes the period for the air-conditioning system to distribute the refrigerant reasonably, but also causes the problem of not saving energy. and poor comfort

Method used

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  • Multi-split air conditioner system and control method and control device thereof
  • Multi-split air conditioner system and control method and control device thereof
  • Multi-split air conditioner system and control method and control device thereof

Examples

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example 1

[0055] Example 1: For example, a multi-connected system consists of 1 outdoor unit and 7 indoor units. When the outdoor ambient temperature is 30°C and the indoor ambient temperature is 28°C (all indoor units have the same indoor temperature), refer to figure 2 , firstly, the multi-connected system receives the start-up signal to start up, and turns on the 1# and 2# indoor units (the rated cooling capacity of 1# is 5.6kw, and the rated cooling capacity of 2# is 14kw), and then calls the operation database to find that the current indoor Under the combination of the external ambient temperature and the indoor unit that needs to be opened, if there is no electronic expansion valve opening of the relevant indoor unit in the operating database, the initial given opening of the electronic expansion valve of the indoor unit that needs to be opened is obtained. 1# is 200P, 2# is 400P (take the maximum opening of the electronic expansion valve of the indoor unit as 500P as an example)...

example 2

[0057] Example 2: For example, a multi-connected system consists of 1 outdoor unit and 7 indoor units. When the outdoor ambient temperature is 30°C and the indoor ambient temperature is 28°C (the indoor temperature of each indoor unit is the same), first, the multi-connected system receives Turn on the power-on signal, turn on 1# and 2# indoor units (the rated cooling capacity of 1# is 5.6kw, and the rated cooling capacity of 2# is 14kw), and then call the content of the operation database to find the current indoor and outdoor ambient temperature and indoor unit Under the combination, if there is no relevant opening degree of the electronic expansion valve of the indoor unit in the operation database, the initial given opening degree of the electronic expansion valve of the indoor unit is called, 1# is 200P, and 2# is 400P (the opening degree is based on the reliability of the system operation Considering the degree, take the maximum opening of the electronic expansion valve o...

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Abstract

The invention provides a multi-split air conditioner system, a control method thereof and a control device thereof, wherein the control method of the multi-split air conditioner system comprises the following steps: determining an indoor unit to be turned on according to the received power-on signal; calling a running database, and determining whether the running database has an initial target control parameter of the indoor unit to be turned on; and if the running database has the initial target control parameter, controlling the indoor unit to be turned on according to the initial target control parameter. The method makes the opening control of an electronic expansion valve of the indoor unit of the multi-split air conditioner system more intelligent and more suitable for the installation environment of the indoor unit during actual use, can ensure that the multi-split air conditioner system quickly enters the stabilization time and improves the user comfort.

Description

technical field [0001] The invention relates to the technical field of air conditioning, and in particular to a multi-connection system, a control method for the multi-connection system and a control device for the multi-connection system. Background technique [0002] The electronic expansion valve plays the role of throttling and reducing pressure in the multi-connected heat pump air-conditioning system, so it is very important to control the opening of the electronic expansion valve. [0003] In the existing multi-connected heat pump air-conditioning system, an initial electronic expansion valve opening is set according to the capacity of the indoor unit (such as cooling capacity) every time it is started, and is pre-allocated to each indoor unit to control the flow of refrigerant, that is, The opening degree of the electronic expansion valve of each indoor unit has a fixed initial opening degree. However, due to differences in actual installation conditions or use envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/30F24F11/61F24F11/64F25B41/06F25B41/34
CPCF24F11/30F24F11/61F24F11/64F25B2600/2513F25B41/31Y02B30/70
Inventor 吴孔祥许永锋梁伯启李宏伟卜其辉董世龙吴晓鸿张宇
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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