WO2020224037A1

WO2020224037A1 - Control method and device for multi-split air conditioning system

Info

Publication number: WO2020224037A1
Application number: PCT/CN2019/092112
Authority: WO
Inventors: 苏玉海; 张仕强; 焦华超; 黄业祥
Original assignee: 珠海格力电器股份有限公司
Priority date: 2019-05-07
Filing date: 2019-06-20
Publication date: 2020-11-12
Also published as: CN110081554B; CN110081554A

Abstract

A control method and device for a multi-split air conditioning system. Said method comprises: acquiring operating parameters of an outdoor unit in a multi-split air conditioning system in a target area, the operating parameters being used for measuring an operating state of the outdoor unit; determining whether the operating parameters satisfy a first preset condition; and according to a determination result, determining whether to adjust a turn-on ratio of indoor units in the multi-split air conditioning system, the turn-on ratio being a ratio of a first number of first indoor units operating in a first preset mode in the multi-split air conditioning system to a total number of all the indoor units in the multi-split air conditioning system.

Description

Control method and device of multi-line air conditioning system

Technical field

This application relates to the field of smart home appliances, and in particular to a control method and device for a multi-line air conditioning system.

Background technique

At present, most indoor units with multiple connections are used for commercial purposes. In this application scenario, multiple indoor units are more likely to be used at the same time. This makes the operation load of the indoor unit and outdoor unit heavy if the external environment temperature is high in summer. , Causing some operating parameters of the unit to exceed the specified operating range. Among them, the operating parameters include the high pressure of the system and the operating current of the compressor, which greatly increases the risk of damage and failure of the multi-line compressor.

In the prior art, the common method to solve this problem is: when the compressor high pressure side pressure or the compressor current is too high, in order to avoid the compressor from being damaged by running for a long time under this condition, the control program of the indoor unit will be based on its own Protective measures reduce the operating frequency of the compressor, but this causes the ability of the outdoor unit compressor to not be fully utilized, almost affects the cooling effect of all indoor units, and brings users a poor comfort experience.

In view of the above problems, no effective solutions have been proposed yet.

Summary of the invention

The embodiments of the present application provide a control method and device for a multi-connected air conditioning system, so as to at least solve the problem that when the compressor current is too high and the system high pressure pressure is too high, the operating frequency of the compressor is directly reduced, and the cooling effect of the indoor unit is affected. Experience poor technical issues.

According to one aspect of the embodiments of the present application, there is provided a control method of a multi-connected air conditioning system. The method includes: obtaining operating parameters of an outdoor unit in the multi-connected air conditioning system in a target area, and the operating parameters are used to measure the operation of the outdoor unit State; determine whether the operating parameters meet the first preset condition; determine whether to adjust the opening ratio of the indoor unit in the multi-line air conditioning system according to the judgment result, wherein the opening ratio is: The ratio of the first number of first indoor units operating in the first preset mode to the total number of all indoor units in the multi-connected air conditioning system.

Optionally, determining whether the operating parameter meets the first preset condition includes: determining whether the operating parameter continuously meets the first preset condition within a first preset time period.

Optionally, the operating parameter includes at least one of the following: a high-pressure side pressure of the compressor, and an operating current of the compressor; the first preset condition includes at least one of the following: the high-pressure side pressure is greater than a first preset Threshold, the operating current is greater than a second preset threshold.

Optionally, determining whether to adjust the opening ratio of the indoor unit in the multi-connected air conditioning system according to the judgment result includes: when the judgment result indicates that the operating parameter meets the first preset condition, controlling to reduce the indoor unit Turn-on ratio; controlling to reduce the turn-on ratio of the indoor unit includes: controlling to reduce the first number;

Optionally, the first preset mode includes: a cooling mode; controlling to reduce the first number includes: sorting the temperatures in each area where the first indoor unit is located to obtain the lowest temperature; The first indoor unit in the area corresponding to the temperature is determined to be the second indoor unit; the second indoor unit is controlled to enter a second preset mode; wherein, the second preset mode includes: a shutdown mode or a ventilation mode.

Optionally, before controlling the second indoor unit to enter the second preset mode, it is determined whether the priority of the second indoor unit meets the preset priority, and if not, it is determined to control the second indoor unit to enter the second preset mode. Set mode.

Optionally, after controlling to reduce the first number, it includes: determining whether the operating parameter continuously meets the first preset condition within a second preset time period, and if so, continuing to control to reduce the first number.

Optionally, the continuing control to reduce the first number includes: sorting the temperatures in each area where the first indoor unit is located to obtain the lowest temperature; and setting the first indoor unit in the area corresponding to the lowest temperature The unit is determined to be the second indoor unit; the second indoor unit is controlled to enter the second preset mode to obtain the third indoor unit.

Optionally, after determining whether the operating parameter continuously meets the first preset condition within a second preset time period, if the judgment result shows that the operating parameter does not continuously meet the first preset condition within the second preset time period According to a preset condition, the third number of the third indoor unit is acquired, and the first indoor unit and the third indoor unit are controlled to continue to operate according to the current operating mode for a third preset period of time.

Optionally, after controlling all indoor units to continue to operate according to the current operating mode for a third preset period of time, the method includes: judging whether the operating parameters meet the second preset condition, and if so, setting the third indoor unit The operating mode of the third indoor unit is adjusted from the second preset mode to the first preset mode. If not, the operating mode of the third indoor unit is adjusted from the second preset mode to the first preset mode. Set the mode, and sort the temperature in each area where the first indoor unit is located from high to low, determine the first indoor unit with the third number at the end as the second indoor unit, and control the third number The second indoor unit enters the second preset mode.

Optionally, the second preset condition includes at least one of the following: the high pressure side pressure is less than a third preset threshold, and the operating current is less than a fourth preset threshold.

According to one aspect of the embodiments of the present application, there is provided a control device for a multi-line air conditioning system, the device comprising: an acquisition module configured to acquire operating parameters of an outdoor unit in the multi-line air conditioning system in a target area, the operating parameters being used for Measure the operating state of the outdoor unit; the judgment module is set to judge whether the operating parameters meet the first preset condition; the determination module is set to determine whether to adjust the opening ratio of the indoor unit in the multi-line air conditioning system according to the judgment result, wherein The turn-on ratio is: the ratio of the first number of first indoor units operating in the first preset mode in the multi-line air conditioning system to the total number of all indoor units in the multi-line air conditioning system.

According to one aspect of the embodiments of the present application, a storage medium is provided, the storage medium includes a stored program, wherein when the program runs, the device where the storage medium is located is controlled to execute the above-mentioned control method of the multi-line air conditioning system .

According to one aspect of the embodiments of the present application, a processor is provided, the processor is configured to run a program, wherein the program executes the above-mentioned control method of the multi-line air conditioning system when the program is running.

In the embodiment of the present application, the operating parameters of the outdoor unit in the multi-connected air conditioning system in the target area are obtained, and the operating parameters are used to measure the operating state of the outdoor unit; determine whether the operating parameters meet the first preset condition; As a result, it is determined whether to adjust the opening ratio of the indoor units in the multi-line air conditioning system, where the opening ratio is: the first number of first indoor units operating in the first preset mode in the multi-line air conditioning system, and The ratio of the total number of all indoor units in the multi-line air-conditioning system is such that when the pressure on the high-pressure side of the compressor of the outdoor unit and/or the operating current is too high, the opening ratio of the indoor unit is adjusted to improve the reliability of the multi-line outdoor unit It also improves the user’s comfort level in the cooling mode, and solves the problem that when the compressor current is too high and the system high pressure is too high, the operating frequency of the compressor is directly reduced, which affects the cooling effect of the indoor unit, and the user experience is poor. technical problem.

Description of the drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application and do not constitute an improper limitation of the application. In the attached picture:

Fig. 1 is a schematic flowchart of an optional control method of a multi-connected air conditioning system according to an embodiment of the present application;

2 is a schematic flowchart of another optional control method of a multi-connected air conditioning system according to an embodiment of the present application;

Fig. 3 is a schematic structural diagram of an optional control device of a multi-connected air conditioning system according to an embodiment of the present application.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the application, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of this application.

It should be noted that the terms "first" and "second" in the description and claims of the application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to the clearly listed Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

According to an embodiment of the present application, an embodiment of a method for adjusting a display screen is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and, Although a logical sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than here.

Fig. 1 is a schematic flowchart of a control method of a multi-connected air conditioning system according to an embodiment of the present application. As shown in Fig. 1, the method includes at least the following steps:

Step S102: Obtain the operating parameters of the outdoor unit in the multi-connected air conditioning system in the target area, and the operating parameters are used to measure the operating state of the outdoor unit;

In some optional embodiments of the present application, the operating parameter may be at least one of the following: the high-pressure side pressure of the compressor, and the operating current of the compressor;

In some optional embodiments of the present application, during the operation of the air-conditioning unit, the air-conditioning main controller may periodically obtain the operating parameters of the outdoor unit in the multi-line air-conditioning system in the target area. For example: Obtain the high-pressure side pressure of the compressor and/or the operating current of the compressor every d seconds.

Step S104, judging whether the operating parameters meet the first preset condition;

In some optional embodiments of the present application, the first preset condition may be at least one of the following: the high-pressure side pressure is greater than a first preset threshold, and the operating current is greater than a second preset threshold.

Step S106: Determine whether to adjust the turn-on ratio of the indoor unit in the multi-line air conditioning system according to the judgment result, where the turn-on ratio is: the first indoor unit operating in the first preset mode in the multi-line air conditioning system The first number is the ratio of the total number of all indoor units in the multi-line air conditioning system.

In some optional embodiments of the present application, determining whether to adjust the opening ratio of the indoor unit in the multi-connected air conditioning system according to the judgment result may be implemented in the following manner: when the judgment result indicates that the operating parameter meets the first When the conditions are preset, control to reduce the opening ratio of the indoor unit;

In some optional embodiments of the present application, judging whether the operating parameter meets the first preset condition can be achieved in the following manner: judging whether the operating parameter meets the first preset condition continuously within the first preset time period. Pre-conditions. For example: when the main controller of the air conditioner continuously detects that the pressure on the high pressure side of the compressor is greater than the first preset threshold within A minutes, or the operating current of the compressor is greater than the second preset threshold, the multi-connected air conditioning system enters the indoor unit opening ratio Automatic control, otherwise the system keeps the current running state without any special control. When the multi-line air conditioning system enters the automatic control of the indoor unit opening ratio, it is triggered to determine whether to adjust and adjust the opening ratio of the indoor unit in the multi-line air conditioning system according to the judgment result.

In some optional embodiments of the present application, the first preset mode may be: a cooling mode;

In some optional embodiments of the present application, controlling to reduce the turn-on ratio of the indoor unit may be implemented in the following manner: controlling to reduce the first number;

In some optional embodiments of the present application, controlling to reduce the first number can be achieved by: sorting the temperatures in each area where the first indoor unit is located to obtain the lowest temperature; The first indoor unit in the area corresponding to the lowest temperature is determined to be the second indoor unit; controlling the second indoor unit to enter the second preset mode to obtain the third indoor unit;

In some optional embodiments of the present application, before controlling to reduce the first number, temperature information in each area where all the first indoor units are located needs to be acquired. After entering the automatic control of the indoor unit startup ratio, the main controller of the air conditioner will sort the temperatures corresponding to the acquired temperature information to obtain the lowest temperature. Wherein, the outdoor unit and the indoor unit may have a one-to-many relationship, the first indoor unit may be multiple, and each area where the first indoor unit is located may be each room where each indoor unit is located.

In some optional embodiments of the present application, the second preset mode may be: stop operation mode, or ventilation mode. The operating power of the indoor unit in the second preset mode is less than the operating power in the first preset mode.

In some optional embodiments of the present application, before controlling the second indoor unit to enter the second preset mode, it is determined whether the priority of the second indoor unit meets the preset priority, and if not, it is determined to control the The second indoor unit enters the second preset mode.

In some optional embodiments of the present application, the user may set priorities of different levels for some indoor units, and not set priorities for the other indoor units.

In some optional embodiments of the present application, the user can set the refrigeration priority of the air conditioner indoor unit of an important room. When the priority has been set, the room air conditioner indoor unit will not be affected, and the room will not be affected. The machine adjusts the operating mode to give priority to ensuring the cooling effect of the room.

In some optional embodiments of the present application, after controlling the reduction of the first number, the following steps need to be performed: determining whether the operating parameter continuously meets the first preset condition within a second preset period of time, If yes, continue to control to reduce the first number. In some optional embodiments of the present application, this step may be executed cyclically.

In some optional embodiments of the present application, the second preset duration may be equal to the first preset duration.

In some optional embodiments of the present application, the continued control to reduce the first number can be implemented in the following manner: sort the temperatures in each area where the first indoor unit is located to obtain the lowest temperature; The first indoor unit in the area corresponding to the lowest temperature is determined as the second indoor unit; and the second indoor unit is controlled to enter the second preset mode to obtain the third indoor unit.

In some optional embodiments of the present application, after controlling to reduce the first number, when the main controller of the air conditioner continuously detects within B minutes that the pressure on the high pressure side of the compressor is greater than the first preset threshold, and/or compresses If the operating current of the unit is greater than the second preset threshold, the temperature in each room where the first indoor unit is located is sorted again to obtain the lowest temperature; the first indoor unit in the area corresponding to the lowest temperature is also determined as the second Indoor unit; controlling the second indoor unit to enter the second preset mode to obtain a third indoor unit.

In some optional embodiments of the present application, the second indoor unit is an indoor unit whose operating mode needs to be adjusted from the first preset mode to the second preset mode. The third indoor unit is an indoor unit whose operating mode is the second preset mode.

In some optional embodiments of the present application, if the operating parameter does not continuously meet the first preset condition within the second preset time period, obtain the third number of the third indoor unit, and control The first indoor unit and the third indoor unit continue to operate according to the current operating mode for a third preset period of time.

In some optional embodiments of the present application, after controlling all indoor units to continue to operate in the current operating mode for a third preset period of time, the method further needs to perform the following steps: determine whether the operating parameters conform to The second preset condition, if yes, adjust the operating mode of the third indoor unit from the second preset mode to the first preset mode, if not, adjust the operating mode of the third indoor unit The mode is adjusted from the second preset mode to the first preset mode, and the temperature in each area where the first indoor unit is located is sorted from high to low, and the last third number is sorted. An indoor unit is determined to be the second indoor unit, and the third number of second indoor units are controlled to enter a second preset mode.

In some optional embodiments of the present application, the first indoor unit is an indoor unit whose operating mode is the first preset mode.

In some optional embodiments of the present application, determining whether the operating parameter meets the second preset condition may be: determining whether the operating parameter meets the second preset condition within a fourth preset period of time.

In other optional embodiments of the present application, judging whether the operating parameter meets the second preset condition may be: judging whether the operating parameter meets the second preset condition within a fourth preset period of time. Set conditions.

In some optional embodiments of the present application, after controlling the third number of second indoor units to enter the second preset mode, the following steps need to be performed: controlling all indoor units to continue to operate in the current operating mode The fifth preset duration.

In some optional embodiments of the present application, the second preset condition may be at least one of the following: the high-pressure side pressure is less than a third preset threshold, and the operating current is less than a fourth preset threshold.

In some optional embodiments of the present application, the third preset duration is equal to the fifth preset duration.

In some optional embodiments of the present application, if the pressure on the high pressure side of the compressor is less than the third preset threshold, and/or the operating current of the compressor is less than the fourth preset threshold, then all previous adjustments to the ventilation operation are performed. The three indoor units return to the cooling state. Otherwise, turn on the indoor unit, and the system first restores the third indoor unit that was previously ventilated to the cooling state, and then sorts the indoor temperatures of all the indoor units that are running cooling, and sorts the indoor unit with the lowest indoor temperature. Switch to ventilation operation. After keeping the current indoor unit running state for E minutes, enter the indoor unit to turn on again.

With the solution of the present application, after the high-pressure side pressure of the compressor and/or the operating current of the compressor exceed the preset threshold, the air-conditioning indoor unit can realize alternate cooling. By controlling the number of simultaneous activation of indoor units, the risk of compressor damage and increased failure rate is reduced. It solves the risk of compressor damage and increased failure rate caused by the outdoor unit operating parameters exceeding the range when the air conditioner is operating at high load in summer. It solves the drawback that the compressor's refrigeration capacity cannot be fully utilized due to the direct frequency reduction method. Turning on the indoor unit improves the reliability of the multi-connected outdoor unit, and at the same time improves the user's comfort experience under refrigeration to a certain extent.

In the embodiment of the present application, the operating parameters of the outdoor unit in the multi-connected air conditioning system in the target area are obtained, and the operating parameters are used to measure the operating state of the outdoor unit; determine whether the operating parameters meet the first preset condition; As a result, it is determined whether to adjust the opening ratio of the indoor units in the multi-line air conditioning system, where the opening ratio is: the first number of first indoor units operating in the first preset mode in the multi-line air conditioning system, and The ratio of the total number of all indoor units in the multi-line air-conditioning system is such that when the pressure on the high-pressure side of the compressor of the outdoor unit and/or the operating current is too high, the opening ratio of the indoor unit is adjusted to improve the reliability of the multi-line outdoor unit The role of sex, and improve the comfort level of users in cooling mode. In order to at least solve the technical problem that the compressor current is too high and the system high pressure pressure is too high, the operating frequency of the compressor is directly reduced, which affects the cooling effect of the indoor unit, and the user experience is poor.

Fig. 2 is a schematic flowchart of a control method of a multi-connected air conditioning system according to an embodiment of the present application. As shown in Fig. 2, the method at least includes the following steps:

Step S202, the user sets the refrigeration priority of the indoor unit;

Step S204, the main controller obtains the compressor high pressure side pressure Pd of the outdoor unit, and/or the operating current I, and the temperature information in the room where the first indoor unit is located;

Step S206, continuously for A minutes, detect whether the compressor high pressure side pressure Pd is greater than the first preset threshold, and/or whether the operating current I is greater than the second preset threshold; if so, step S2082 is executed cyclically, and if not, execute cyclically Step S2084;

Step S2082: Determine the first indoor unit with the lowest temperature as the second indoor unit, and adjust the operating mode of the second indoor unit from the first preset mode to the second preset mode to obtain the third indoor unit;

In some optional embodiments of the present application, the indoor unit whose operation mode is the first preset mode is the first indoor unit, and the second indoor unit needs to adjust its operation mode from the first preset mode to the second indoor unit. Indoor unit with preset mode. The third indoor unit is an indoor unit whose operating mode is the second preset mode.

The second preset mode may be: a shutdown mode or a ventilation mode. The operating power of the indoor unit in the second preset mode is less than the operating power in the first preset mode.

Step S2084, keeping the operating mode of the first indoor unit unchanged;

Step S210, continuous for A minutes, detect whether the compressor high pressure side pressure Pd is greater than the first preset threshold, and/or whether the operating current I is greater than the second preset threshold, if yes, then step S2082 is executed cyclically, if not, then cyclically executed Step S212;

Step S212: Record the number D of the third indoor units, and keep the operation modes of the first indoor units and the third indoor units unchanged for E minutes;

Step S214, detecting whether the compressor high pressure side pressure Pd is less than a third preset threshold, and/or whether the operating current I is less than a fourth preset threshold, if yes, step S2164 is executed cyclically, and if not, step S2162 is cyclically executed;

Step S2162, restoring the operation mode of the third indoor unit from the second operation mode to the first operation mode to obtain the first indoor unit;

Step S2164: Restore the operating mode of the third indoor unit from the second preset mode to the first preset mode, and exit the indoor unit to automatically turn on the proportional automatic control;

Step S218: Sort the temperature in the room where all the first indoor units are located, determine the D first indoor units with the smallest indoor temperature in the sorting as the second indoor units, and change the operation mode of the second indoor units from The first preset mode is adjusted to the second preset mode;

Step S220: Maintain the current operation mode of the first indoor unit and the third indoor unit for E minutes.

Fig. 3 is a schematic structural diagram of a control device for a multi-line air conditioning system according to an embodiment of the present application. As shown in Fig. 3, the device at least includes: an acquisition module 32, a judgment module 34, and a determination module 36; among them:

The obtaining module 32 is configured to obtain the operating parameters of the outdoor unit in the multi-line air conditioning system in the target area, and the operating parameters are used to measure the operating state of the outdoor unit;

The judging module 34 is configured to judge whether the operating parameters meet the first preset condition;

The determining module 36 is configured to determine whether to adjust the opening ratio of the indoor unit in the multi-connected air conditioning system according to the judgment result, wherein the opening ratio is: the first operating in the first preset mode in the multi-connected air conditioning system The first number of indoor units is the ratio of the total number of all indoor units in the multi-connected air conditioning system.

It should be noted that, for the preferred implementation of the embodiment shown in FIG. 3, reference may be made to the related description of the embodiment shown in FIG. 1, which will not be repeated here.

An embodiment of the present application also provides a storage medium, the storage medium including a stored program, wherein the device where the storage medium is located is controlled to execute the above-mentioned control method of the multi-line air conditioning system when the program is running.

The embodiment of the present application also provides a processor, the processor is used to run a program, wherein the program executes the above-mentioned control method of the multi-line air conditioning system when the program is running.

The serial numbers of the foregoing embodiments of the present application are for description only, and do not represent the superiority of the embodiments.

In the above-mentioned embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in an embodiment, reference may be made to related descriptions of other embodiments.

In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of units may be a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into Another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of units or modules, and may be in electrical or other forms.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods in the various embodiments of the present application. The aforementioned storage media include: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program code .

The above are only the preferred embodiments of this application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of this application, several improvements and modifications can be made, and these improvements and modifications should also be considered The protection scope of this application.

Industrial applicability

The solution provided in the embodiment of this application can be applied to the control process of a multi-connected air conditioning system. The solution provided in the embodiment of this application is adopted to enable the indoor unit to be turned on when the pressure on the high-pressure side of the compressor of the outdoor unit and/or the operating current is too high. The ratio is adjusted to improve the reliability of the multi-line outdoor unit, and improve the user’s comfort level in the cooling mode. It solves the problem of directly reducing the operating frequency of the compressor when the compressor current is too high and the system high pressure pressure is too high. The cooling effect of the indoor unit is a technical problem with poor user experience.

Claims

A control method of a multi-connected air conditioning system includes:

Obtain the operating parameters of the outdoor unit in the multi-line air conditioning system in the target area, and the operating parameters are used to measure the operating status of the outdoor unit;

Judging whether the operating parameters meet the first preset condition;

Determine whether to adjust the opening ratio of the indoor units in the multi-connected air conditioning system according to the judgment result, wherein the opening ratio is: the first number of first indoor units operating in the first preset mode in the multi-connected air conditioning system , And the ratio of the total number of all indoor units in the multi-line air conditioning system.
The method according to claim 1, wherein determining whether the operating parameter meets the first preset condition comprises: determining whether the operating parameter continuously meets the first preset condition within a first preset period of time.
The method of claim 1, wherein:

The operating parameters include at least one of the following: high-pressure side pressure of the compressor, and operating current of the compressor;

The first preset condition includes at least one of the following: the high-pressure side pressure is greater than a first preset threshold, and the operating current is greater than a second preset threshold.
The method according to claim 1, wherein determining whether to adjust the opening ratio of the indoor unit in the multi-connected air conditioning system according to the judgment result comprises: when the judgment result indicates that the operating parameter meets the first preset condition, control is reduced The opening ratio of the indoor unit;

Controlling to reduce the opening ratio of the indoor unit includes: controlling to reduce the first number.
The method according to claim 4, the first preset mode comprises: a cooling mode;

Controlling to reduce the first number includes: sorting the temperatures in each area where the first indoor unit is located to obtain the lowest temperature; determining the first indoor unit in the area corresponding to the lowest temperature as the second indoor unit ; Control the second indoor unit to enter the second preset mode to obtain the third indoor unit;

Wherein, the second preset mode includes: a stop operation mode or a ventilation mode.
The method according to claim 5, wherein before controlling the second indoor unit to enter the second preset mode, it is determined whether the priority of the second indoor unit meets the preset priority, and if not, it is determined to control the second indoor unit. The second indoor unit enters the second preset mode.
The method according to claim 4, wherein after controlling the reduction of the first number, it comprises: determining whether the operating parameter continuously meets the first preset condition within a second preset period of time, and if so, continuing to control Reduce the first number.
The method according to claim 7, wherein the continuing control to reduce the first number comprises: sorting the temperatures in each area where the first indoor unit is located to obtain the lowest temperature; and assigning the lowest temperature to The first indoor unit in the area of is determined to be the second indoor unit; the second indoor unit is controlled to enter the second preset mode to obtain the third indoor unit.
The method according to claim 5 or 7, wherein after judging whether the operating parameter continuously meets the first preset condition within a second preset time period, if the judgment result shows that the operating parameter is not continuously in the first 2. If the first preset condition is met within a preset time period, the third number of the third indoor unit is acquired, and the first indoor unit and the third indoor unit are controlled to continue to operate according to the current operating mode The third preset duration.
The method according to claim 9, wherein after controlling all indoor units to continue to operate according to the current operating mode for a third preset period of time, the method comprises: determining whether the operating parameters meet the second preset condition, and if so, then Adjust the operating mode of the third indoor unit from the second preset mode to the first preset mode, if not, change the operating mode of the third indoor unit from the second preset mode Adjust to the first preset mode, and sort the temperature in each area where the first indoor unit is located from high to low, and determine the third indoor unit with the third number at the end as the second indoor unit , Controlling the third number of second indoor units to enter a second preset mode.
The method according to claim 9, wherein the second preset condition includes at least one of the following: the high pressure side pressure is less than a third preset threshold, and the operating current is less than a fourth preset threshold.
A control device for a multi-line air conditioning system, including:

The obtaining module is used to obtain the operating parameters of the outdoor unit in the multi-line air conditioning system in the target area, and the operating parameters are used to measure the operating state of the outdoor unit;

The judgment module is used to judge whether the operating parameter meets the first preset condition;

The determining module is configured to determine whether to adjust the opening ratio of the indoor unit in the multi-line air conditioning system according to the judgment result, wherein the opening ratio is: the first indoor unit operating in the first preset mode in the multi-line air conditioning system The first number of units is the ratio of the total number of all indoor units in the multi-connected air conditioning system.
A storage medium, the storage medium includes a stored program, wherein, when the program is running, the device where the storage medium is located is controlled to execute the control method of the multi-line air conditioning system according to any one of claims 1 to 11.
A processor configured to run a program, wherein the program executes the control method of a multi-line air-conditioning system according to any one of claims 1 to 11 when the program is running.