WO2022134871A1

WO2022134871A1 - Air conditioner operation control method and apparatus, and air conditioner and computer-readable storage medium

Info

Publication number: WO2022134871A1
Application number: PCT/CN2021/128081
Authority: WO
Inventors: 申传涛; 金孟孟; 武连发; 焦华超; 滕天凤; 鲍勇
Original assignee: 珠海格力电器股份有限公司
Priority date: 2020-12-22
Filing date: 2021-11-02
Publication date: 2022-06-30
Also published as: CN112665105A

Abstract

An air conditioner operation control method and apparatus, and an air conditioner and a computer-readable storage medium. The air conditioner operation control method comprises: when an abnormal compressor is present in an outdoor unit of an air conditioner, successively restarting the abnormal compressor; during the successive restarting process, successively decreasing an operation parameter value of the abnormal compressor in order to search for a safe operation range of the abnormal compressor; when the safe operation range is found, stopping restarting, and controlling the abnormal compressor to operate within the safe operation range; and when the safe operation range is not found, controlling the abnormal compressor to stop operating.

Description

Air conditioner operation control method and device, air conditioner and computer readable storage medium

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on the CN application number 202011534655.9 and the filing date is December 22, 2020, and claims its priority. The disclosure of the CN application is hereby incorporated into this application as a whole.

technical field

The present disclosure relates to an air conditioner operation control method and device, an air conditioner and a computer-readable storage medium.

Background technique

Compressors often stop running due to overcurrent protection caused by excessive current. There are many reasons for overcurrent protection, in addition to the compressor itself, it is often caused by abnormal wear and so on.

SUMMARY OF THE INVENTION

In a first aspect, the present disclosure provides an air conditioner operation control method, the air conditioner operation control method comprising:

When an abnormal compressor occurs in an outdoor unit of an air conditioner, restart the abnormal compressor one by one;

In the successive restarting process, the operating parameter values of the abnormal compressors are sequentially reduced, so as to find the safe operating range of the abnormal compressors;

When found, stop restarting and control the abnormal compressor to operate within the safe operating range;

When not found, the abnormal compressor is controlled to stop running.

In some embodiments, in the successive restarting process, the operating parameter values of the abnormal compressors are sequentially decreased, so as to find the safe operating range of the abnormal compressors, including:

During successive restarts, the operating parameter value of the abnormal compressor is reduced according to the preset parameter adjustment value;

When the abnormal compressor recovers from abnormal to normal after a restart, and the operating parameter value of the abnormal compressor is greater than the minimum parameter value of the abnormal compressor, it is determined that the safe operation of the abnormal compressor is found. scope;

When the abnormal compressor does not recover from abnormal to normal after restarting successively, and the operating parameter value of the abnormal compressor is not greater than the minimum parameter value of the abnormal compressor, it is determined that the abnormal compressor is not found safe operating range;

The operating parameter value includes at least one of an operating frequency value and an operating current value.

In some embodiments, when an abnormal compressor occurs in an outdoor unit of an air conditioner, restarting the abnormal compressor one by one includes:

When the outdoor unit contains one compressor and the compressor is abnormal, restart the abnormal compressor one by one;

When the outdoor unit contains at least two compressors and an abnormal compressor occurs in the outdoor unit, if the normal compressor in the outdoor unit can meet the requirements of the running first air conditioner indoor unit, control the abnormal compressor to stop running ; If the normal compressor in the outdoor unit cannot meet the demand of the first air conditioner indoor unit, restart the abnormal compressor one by one.

In some embodiments, if the normal compressor in the outdoor unit cannot meet the demand of the first air conditioner indoor unit, restarting the abnormal compressor one by one includes:

If the normal compressor in the outdoor unit cannot meet the demand of the first air conditioner indoor unit, the demand of the first air conditioner indoor unit is preferentially allocated to the normal compressor. If the normal compressor cannot meet the demand of the first air conditioner When the indoor unit is in demand, the unallocated demand in the first air conditioner indoor unit demand is allocated to the abnormal compressor, and the abnormal compressor is restarted one by one.

In some embodiments, the restarting the abnormal compressor one by one includes:

When the air conditioner contains at least two outdoor units, if the outdoor unit without the abnormal compressor meets the demand of the running second air conditioner indoor unit, the outdoor unit with the abnormal compressor is controlled to stop running; When the outdoor unit does not meet the demand of the second air conditioner indoor unit, the abnormal compressors in the outdoor units including the abnormal compressors are restarted successively.

In some embodiments, if the outdoor unit without the abnormal compressor does not meet the demand of the second air conditioner indoor unit, restarting the abnormal compressor in the outdoor unit containing the abnormal compressor one by one includes:

If the outdoor unit without the abnormal compressor does not meet the demand for the second air conditioner indoor unit, the demand for the second air conditioner indoor unit is preferentially allocated to the outdoor unit without the abnormal compressor. When the outdoor unit of the compressor cannot meet the demand of the second air conditioner indoor unit, the unallocated demand in the demand of the second air conditioner indoor unit is allocated to the outdoor unit containing the abnormal compressor, and the outdoor unit containing the abnormal compressor is allocated. The abnormal compressor in the machine is restarted one by one.

In some embodiments, if the outdoor unit without the abnormal compressor meets the demand of the second air conditioner indoor unit, before controlling the outdoor unit containing the abnormal compressor to stop running, the steps include:

Determine the ratio of the total capacity of the air conditioner indoor unit in the running state to the outdoor unit that does not contain an abnormal compressor;

According to the ratio and a preset capacity judgment threshold, it is determined whether the outdoor unit that does not contain an abnormal compressor meets the demand of the second air conditioner indoor unit.

In some embodiments, the air-conditioning operation control method further includes:

If the outdoor unit without the abnormal compressor meets the demand of the second air conditioner indoor unit, the outdoor unit with the abnormal compressor is controlled to stop running, and a first-level warning fault signal is issued;

When the safe operating range of the abnormal compressor is not found, the abnormal compressor is controlled to stop running, and a second-level warning fault signal is issued.

In a second aspect, the present disclosure provides an air conditioner operation control device, and the air conditioner operation control device includes:

The restart module is used to restart the abnormal compressor one by one when an abnormal compressor occurs in an outdoor unit of the air conditioner;

an adjustment module, used for sequentially reducing the operating parameter value of the abnormal compressor in the process of successive restarts, so as to find the safe operating range of the abnormal compressor;

The control module is configured to stop restarting and control the abnormal compressor to run in the safe operating range when it is found; and control the abnormal compressor to stop running when it is not found.

In a third aspect, the present disclosure provides an air conditioner operation control device, comprising: a memory; and a processor coupled to the memory, configured to execute the air conditioner according to any one of the above embodiments based on instructions stored in the memory Steps to run the control method.

In a fourth aspect, the present disclosure provides an air conditioner, where the air conditioner includes the air conditioner operation control device according to any one of the above embodiments.

In a fifth aspect, the present disclosure provides a computer-readable storage medium, where an air-conditioning operation control program is stored on the computer-readable storage medium, and when the air-conditioning operation control program is executed by a processor, the above-described embodiments are implemented. The steps of an air conditioner operation control method.

Description of drawings

FIG. 1 is a flowchart of an air conditioner operation control method according to some embodiments of the present disclosure.

FIG. 2 is a flowchart of an air conditioner operation control method according to other embodiments of the present disclosure;

3 is a schematic diagram of an air conditioner operation control apparatus according to some embodiments of the present disclosure;

FIG. 4 is a schematic diagram of an air conditioner operation control apparatus according to other embodiments of the present disclosure.

Detailed ways

The present disclosure will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, but not to limit the present disclosure.

In the following description, suffixes such as 'module', 'component' or 'unit' used to represent elements are used only to facilitate the description of the present disclosure, and have no specific meaning per se. Thus, "module", "component" or "unit" may be used interchangeably.

After the occurrence of overcurrent protection, the air conditioner product processing solutions known to the inventors mainly include: (1) ignore the fault and directly restart the compressor to continue running; (2) consider the compressor to be damaged and stop it.

For scheme (1), the overcurrent protection still exists after the compressor is restarted, and if the compressor continues to restart, the unit failure cannot be dealt with in time, and it is eventually damaged. For solution (2), although the compressor is protected against overcurrent, as long as the compressor load is reduced, the compressor can continue to run when the compressor current is reduced. Direct shutdown processing will greatly reduce the comfort experience of the air conditioner.

Some embodiments of the present disclosure provide an air conditioner operation control method. As shown in FIG. 1 , the air conditioner operation control method includes:

S101, when an abnormal compressor occurs in an outdoor unit of an air conditioner, restart the abnormal compressor one by one;

S102, in the successive restarting process, sequentially reducing the operating parameter value of the abnormal compressor, so as to find the safe operating range of the abnormal compressor;

S103, when found, stop restarting and control the abnormal compressor to operate within the safe operating range;

S104, when the abnormal compressor is not found, control the abnormal compressor to stop running.

For example, the abnormality of the compressor may be that the compressor is in the state of overcurrent protection. In some embodiments, the operating parameter value includes at least one of an operating frequency value and an operating current value. The term "sequentially" may also be described as "sequentially."

In the embodiment of the present disclosure, the abnormal compressor is restarted one by one, and the operating parameter values of the abnormal compressor are sequentially reduced, so as to find the safe operating range of the abnormal compressor, and then control the abnormal compressor to operate within the safe operating range. When the compressor is in the safe operating range of the machine, control the abnormal compressor shutdown, and then effectively solve the problem of the compressor being completely damaged due to the abnormality of the compressor and the unreasonable air conditioning treatment plan. .

In some embodiments, during the successive restarting process, the operating parameter values of the abnormal compressors are sequentially decreased, so as to find the safe operating range of the abnormal compressors, including:

When the abnormal compressor does not recover from abnormal to normal after restarting successively, and the operating parameter value of the abnormal compressor is not greater than the minimum parameter value of the abnormal compressor, it is determined that the abnormal compressor is not found safe operating range. The parameter adjustment value may be set according to the maximum value of the operating parameter of the compressor, for example, the parameter adjustment value is 5%, 10%, 15%, or 20% of the maximum value of the operating parameter. In some embodiments, the parameters include frequency, current, and the like.

In some embodiments, before restarting the abnormal compressor successively, it includes:

Among them, the air conditioner (ie, the air conditioning system) contains different numbers of outdoor units, including one outdoor unit is called a single unit, and at least two outdoor units are called modular.

In some embodiments of the present disclosure, in the adjustment operation control method, factors such as the number of outdoor units, the capacity of indoor units in operation, and the number of compressors contained in an abnormal compressor unit (outdoor unit) are fully considered to formulate the most reasonable control scheme. In some embodiments, on the premise that the demand of the indoor unit can be met without continuing to run, the abnormal compressor stops and informs the user through the wired controller, the unit main control board, etc. in the form of a fault code display; when the abnormal compressor stops, it is directly When the demand of the indoor unit of the air conditioner cannot be met, try to start the operation, and try to allocate the minimum load to the abnormal compressor or no load, and find the safe operating range of the abnormal compressor by continuously reducing the frequency, so as to avoid the user's air conditioning demand being affected. The phenomenon of direct supply interruption occurs. At the same time, if the frequency of the abnormal compressor drops to a very low value but still reports a fault, it means that the abnormal compressor cannot operate normally. At this time, stop the operation to prevent the abnormal compressor from continuing to run and completely damaged. , The damaged abnormal compressor affects other units to prevent the impact from expanding.

In addition, if the installed capacity is relatively small, that is, the capacity of the indoor unit is small, and the capacity of the outdoor unit is relatively large, one outdoor unit may be abnormal at this time, but even if this outdoor unit does not work, the remaining outdoor units can still meet the indoor operating requirements. If the capacity requirements of the unit are met, the outdoor unit can be shut down for processing at this time, and a prompt is issued for the user to repair it as soon as possible. On the contrary, if the installed capacity is relatively large and the demand for the indoor unit is high, the outdoor unit is directly shut down to process the outdoor unit, and the remaining outdoor units cannot meet the capacity requirements of the running indoor unit. At this time, the outdoor unit needs to be operated within the safe operating range. Try to meet the needs of users.

If the outdoor unit without the abnormal compressor does not meet the demand for the second air conditioner indoor unit, the demand for the second air conditioner indoor unit is preferentially allocated to the outdoor unit without the abnormal compressor. When the outdoor unit of the compressor cannot meet the demand of the second air conditioner indoor unit, the unallocated demand in the demand of the second air conditioner indoor unit is allocated to the outdoor unit containing the abnormal compressor, and the outdoor unit containing the abnormal compressor is allocated. The abnormal compressor in the machine is restarted one by one,

In some embodiments, if the outdoor unit without the abnormal compressor meets the demand of the second air conditioner indoor unit, before controlling the outdoor unit containing the abnormal compressor to stop running, the method for controlling the operation of the air conditioner further includes:

determining the ratio of the total capacity of the running air conditioner indoor units in the running state to the outdoor unit that does not contain an abnormal compressor;

If the outdoor unit without the abnormal compressor meets the demand of the second air conditioner indoor unit, the outdoor unit with the abnormal compressor is controlled to stop running, and a first-level warning fault signal G1 is issued;

When the safe operating range of the abnormal compressor is not found, the abnormal compressor is controlled to stop running, and a second-level warning fault signal G2 is issued.

That is to say, it can be divided into different prompt levels G1 and G2. G1 is a general reminder to inform the user that the unit has an abnormality and needs to be dealt with as soon as possible; while G2 is an emergency reminder, which reminds the user that the fault cannot be ignored and needs to be dealt with immediately.

In some embodiments of the present disclosure, the operating parameter value includes at least one of an operating frequency value and an operating current value. Among them, the operating frequency of the compressor after restart is not higher than the frequency before the fault. The frequency judgment can be replaced by the control current value method, that is, restart the compressor after a fault: the control current value after restarting is less than the current before the fault, when the current value is close to a certain level, the compressor will no longer increase the frequency, and after another fault, the current will resume. It is a certain value smaller than that before the fault, and the cycle is controlled in this way.

Some embodiments are provided below by taking the operating parameter as the operating frequency as an example.

As shown in FIG. 2 , the air conditioner operation control method in some embodiments of the present disclosure includes part or all of steps 1 to 15 .

Step 1, a compressor overcurrent fault occurs.

Step 2, determine whether the number of outdoor units is not less than 2. Different controls are performed according to the number of outdoor units included, that is, there are two different control schemes for single unit (1 outdoor unit in the system) and modular (number of outdoor units ≥ 2).

Step 3, if it is a single unit, considering the demand of the indoor unit, the unit needs to be started to run after a fault, and it is judged whether the number of compressors is not less than two.

Step 4: If the number of compressors is greater than or equal to two, the non-abnormal compressor is given priority to work. If the non-abnormal compressor can no longer meet the user's needs, try restarting the abnormal compressor and go to step 6.

Step 5, if the number of compressors is one, try restarting directly. Go to step 6.

Step 6: According to the operating frequency f1 of the compressor before the fault, the compressor will run according to (f1-△f) after restarting. If the fault is still reported after restarting, continue to reduce the frequency to operate, and reduce the preset frequency adjustment value each time. △f (that is, the parameter adjustment value), until the unit does not report a fault, the current frequency operation is maintained at this time, and the current configuration is saved. Go to step 10.

Step 10: Determine whether the stable running frequency of the compressor after frequency reduction is not less than the minimum frequency fb. If yes, go to step 9, if not, go to step 11.

Step 11, if the abnormal compressor has been reduced to the minimum frequency fb, and still reports a fault, it means that the compressor can no longer operate safely, and shutdown processing is performed.

Step 12, send out a warning fault signal G2, and display it on the line controller, the main control board of the unit, etc., prompting the user to deal with it immediately.

Step 7: If it is modular, the unit will determine the ratio of the capacity of the internal unit to the total capacity of the non-faulty external units (excluding abnormal compressors), and determine whether the ratio is less than or equal to the preset A (eg, 80%).

Step 8, if the ratio is less than or equal to the preset A, it is not necessary to restart the unit with the abnormal compressor, which can also meet the needs of the user, and the outdoor unit with abnormal compressor is shut down according to the safest solution.

Step 9, send out a warning fault signal G1, and display it on the line controller, the main control board of the unit, etc., prompting the user to repair it as soon as possible.

Step 13, if the ratio is greater than A (such as 80%), directly shutting down the external unit with abnormal compressor will have a great impact on the user's cooling/heating demand. within the safe operating range. The non-abnormal outdoor unit is allocated first, and after the non-abnormal outdoor unit is allocated full capacity, it is allocated to the abnormal outdoor unit (that is, the outdoor unit with abnormal compressor).

In step 14, the abnormal outdoor unit is preferentially allocated to the non-abnormal compressor, and after the non-abnormal compressor is allocated full capacity, it is then allocated to the abnormal compressor.

Step 15, the trial method is: according to the compressor operating frequency f1 before the fault, the unit will run according to (f1-△f) after restarting. Until the unit does not report a fault, the current frequency operation is maintained at this time, and the current configuration is saved. Go to step 10, if the abnormal compressor has been reduced to the minimum frequency fb and still reports a fault, it means that the compressor can no longer run safely, so it needs to be shut down, and a G2 prompt is issued for the user to deal with it immediately.

In the air conditioner operation control methods of some embodiments of the present disclosure, factors such as the number of operating modules in the system, the capacity of the indoor unit that are turned on, and the number of compressors contained in the abnormal outdoor unit are fully considered, and the most reasonable control scheme is formulated: when there is no need to continue operating On the premise that the abnormal compressor can meet the needs of the user, the abnormal compressor stops and informs the user through the wire controller, the main control board of the unit, etc. in the form of fault code display; And try to allocate the minimum load to the abnormal compressor or no load, and find the safe operating range of the abnormal compressor by continuously reducing the frequency, so as to avoid the direct interruption of the user's air conditioning demand. At the same time, if the compressor frequency If it drops to a very low value but still reports a fault, it means that the compressor is unable to operate normally. At this time, stop the operation to avoid complete damage to the compressor due to continued operation. The damaged compressor will affect other units and prevent the impact from expanding.

Some embodiments of the present disclosure also fully consider the installed capacity ratio. If the capacity of the indoor unit is small and the installed capacity of the outdoor unit is relatively large, one outdoor unit may be abnormal at this time, but even if this outdoor unit does not work, the remaining outdoor units If the capacity requirement of starting the indoor unit can still be met, the outdoor unit can be shut down for processing at this time, and a prompt is issued for the user to repair it as soon as possible. On the contrary, the capacity of the outdoor unit is relatively large, and the demand for the indoor unit is also high. The outdoor unit is directly shut down to process the outdoor unit, and the remaining outdoor units cannot meet the capacity requirements of the indoor unit. At this time, the outdoor unit needs to be operated within the safe operation range. Try to meet the needs of users.

Some embodiments of the present disclosure can also be divided into different prompt levels G1 and G2. G1 is a general reminder, informing the user that the unit has an abnormality and needs to be dealt with as soon as possible;

In some embodiments of the present disclosure, when the compressor fails, the operation plan is adjusted. If the demand of the indoor unit can be guaranteed without the need for an abnormal compressor, the shutdown process is performed to ensure the safe operation of the unit. The abnormal compressor operates within the safe range, maximizing the demand capacity of the indoor unit, and minimizing the impact on the comfort of the air conditioner caused by the abnormal compressor. At the same time, after judging that the abnormal compressor can no longer be started safely, shut down the compressor in time and inform the user to prevent further adverse effects from being completely damaged.

Some embodiments of the present disclosure provide an air conditioner operation control device, and the air conditioner operation control device includes:

The restart module 20 is used to restart the abnormal compressor one by one when an abnormal compressor occurs in an outdoor unit of the air conditioner;

The adjustment module 22 is used for sequentially reducing the operating parameter value of the abnormal compressor in the successive restarting process, so as to find the safe operating range of the abnormal compressor;

The control module 24 is configured to stop restarting and control the abnormal compressor to run in the safe operating range when it is found; and control the abnormal compressor to stop running when it is not found.

In some embodiments, the adjustment module 22 is configured to reduce the operating parameter value of the abnormal compressor according to the preset parameter adjustment value during the successive restarting process; after one restart, the abnormal compressor When it recovers from abnormality to normal, and the operating parameter value of the abnormal compressor is greater than the minimum parameter value of the abnormal compressor, it is determined that the safe operating range of the abnormal compressor is found; When the compressor does not recover from abnormality to normal, and the operating parameter value of the abnormal compressor is not greater than the minimum parameter value of the abnormal compressor, it is determined that the safe operating range of the abnormal compressor is not found;

Wherein, the operating parameter value includes at least one of an operating frequency value and an operating current value.

In some embodiments, the restart module 20 is configured to restart the abnormal compressors successively when the outdoor unit contains one compressor and the compressor is abnormal; when the outdoor unit contains at least two compressors When an abnormal compressor occurs in the outdoor unit, if the normal compressor in the outdoor unit can meet the requirements of the running first air conditioner indoor unit, the abnormal compressor is controlled to stop running; if the normal compressor in the outdoor unit cannot To meet the demand of the first air conditioner indoor unit, the abnormal compressor is restarted one by one.

Wherein, if the normal compressor in the outdoor unit cannot meet the demand of the first air conditioner indoor unit, restarting the abnormal compressor one by one includes:

In some embodiments, when the restarting module 20 restarts the abnormal compressor one by one, it is specifically configured to, when the air conditioner contains at least two outdoor units, if the outdoor unit without the abnormal compressor satisfies the second running requirement When the indoor unit of the air conditioner is required, control the outdoor unit containing the abnormal compressor to stop running; if the outdoor unit that does not contain the abnormal compressor does not meet the demand of the second air conditioner indoor unit, the abnormal compressor in the outdoor unit containing the abnormal compressor will be controlled. Perform successive restarts.

If the outdoor unit without the abnormal compressor does not meet the demand for the second air conditioner indoor unit, the demand for the second air conditioner indoor unit is preferentially allocated to the outdoor unit without the abnormal compressor. When the outdoor unit of the compressor cannot meet the demand of the second air conditioner indoor unit, the unallocated demand in the demand of the second air conditioner indoor unit is allocated to the outdoor unit containing the abnormal compressor, and the outdoor unit containing the abnormal compressor is allocated. The abnormal compressor is restarted one by one.

In some implementations, the control module 24 is further configured to control the outdoor unit containing the abnormal compressor to stop running if the outdoor unit containing no abnormal compressor meets the demand of the second air conditioner indoor unit, and issue a first level of warning fault signal;

As shown in FIG. 4 , the air conditioner operation control device 400 includes a memory 401 and a processor 402 coupled to the memory 401 , and the processor 402 is configured to execute the method of any one of the foregoing embodiments based on the instructions stored in the memory 401 .

The memory 401 may include, for example, a system memory, a fixed non-volatile storage medium, and the like. For example, the system memory may store an operating system, an application program, a boot loader (Boot Loader), and other programs.

The air conditioner operation control device 400 may further include an input/output interface 403, a network interface 404, a storage interface 405, and the like. The

interfaces

403 , 404 , and 405 and between the memory 401 and the processor 402 can be connected, for example, through a bus 406 . The input and output interface 403 provides a connection interface for input and output devices such as a display, a mouse, a keyboard, and a touch screen. Network interface 404 provides a connection interface for various networked devices. The storage interface 405 provides a connection interface for external storage devices such as SD cards and U disks.

Some embodiments of the present disclosure provide an air conditioner, where the air conditioner includes the air conditioner operation control device described in any one of the foregoing embodiments.

Some embodiments of the present disclosure provide a computer-readable storage medium, where an air-conditioning operation control program is stored on the computer-readable storage medium, and the air-conditioning operation control program is executed by a processor to implement any one of the foregoing embodiments. The steps of an air conditioner operation control method.

The apparatus embodiment and the computer-readable storage medium embodiment 4 of the present disclosure may have technical effects corresponding to the method embodiments in the specific implementation process.

It can be seen from the above description that each embodiment of the present disclosure mainly solves the problem that the comfort experience of the air conditioner is greatly reduced due to the unreasonable air conditioning treatment solution when the compressor is abnormal, or the compressor is completely damaged due to forced operation in a non-safe operating range. In addition, a new operation control scheme is provided when the compressor is abnormal in the multi-outdoor unit parallel air-conditioning system to ensure that the air-conditioning is within the safe operating range and meets the needs of users to the greatest extent.

In some embodiments of the present disclosure, the abnormal compressors are restarted one by one; in the process of successive restarts, the operating parameter values of the abnormal compressors are sequentially reduced, so as to find the safe operating range of the abnormal compressors; when found, stop restarting And control the abnormal compressor to run in the safe operating range; when the abnormal compressor is not found, control the abnormal compressor to stop running. The effects that can be achieved by some embodiments of the present disclosure are as follows: after the compressor is abnormal, it is ensured that the compressor is restarted again and works within a safe operating range, so as to minimize the discomfort caused by the abnormal compressor. Judging by the parameters, when the compressor cannot continue to run safely, it will be shut down.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The embodiments of the present disclosure have been described above with reference to the drawings, but the present disclosure is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the disclosure, many forms can be made without departing from the scope of the present disclosure and the protection scope of the claims, which all fall within the protection of the present disclosure.

Claims

A method for controlling the operation of an air conditioner, comprising:

When an abnormal compressor occurs in an outdoor unit of an air conditioner, restart the abnormal compressor one by one;

In the successive restarting process, the operating parameter values of the abnormal compressors are sequentially decreased, so as to find the safe operating range of the abnormal compressors;

When found, stop restarting and control the abnormal compressor to operate within the safe operating range;

When not found, the abnormal compressor is controlled to stop running.
The air-conditioning operation control method according to claim 1, wherein, in the successive restarting process, the operating parameter values of the abnormal compressors are sequentially reduced to find the safe operation range of the abnormal compressors, including: :

During successive restarts, the operating parameter value of the abnormal compressor is reduced according to the preset parameter adjustment value;

When the abnormal compressor recovers from abnormal to normal after a restart, and the operating parameter value of the abnormal compressor is greater than the minimum parameter value of the abnormal compressor, it is determined that the safe operation of the abnormal compressor is found. scope;

When the abnormal compressor does not recover from abnormal to normal after restarting successively, and the operating parameter value of the abnormal compressor is not greater than the minimum parameter value of the abnormal compressor, it is determined that the abnormal compressor is not found safe operating range;

The operating parameter value includes at least one of an operating frequency value and an operating current value.
The air conditioner operation control method according to claim 1, wherein when an abnormal compressor occurs in an outdoor unit of the air conditioner, restarting the abnormal compressor one by one comprises:

When the outdoor unit contains one compressor and the compressor is abnormal, restart the abnormal compressor one by one;

When the outdoor unit contains at least two compressors and an abnormal compressor occurs in the outdoor unit, if the normal compressor in the outdoor unit can meet the requirements of the running first air conditioner indoor unit, control the abnormal compressor to stop running ; If the normal compressor in the outdoor unit cannot meet the demand of the first air conditioner indoor unit, restart the abnormal compressor one by one.
The air conditioner operation control method according to claim 3, wherein if the normal compressor in the outdoor unit cannot meet the requirements of the first air conditioner indoor unit, restarting the abnormal compressor one by one comprises:

If the normal compressor in the outdoor unit cannot meet the demand of the first air conditioner indoor unit, the demand of the first air conditioner indoor unit is preferentially allocated to the normal compressor. If the normal compressor cannot meet the demand of the first air conditioner When the indoor unit is in demand, the unallocated demand in the first air conditioner indoor unit demand is allocated to the abnormal compressor, and the abnormal compressor is restarted one by one.
The air-conditioning operation control method according to any one of claims 1-4, wherein the restarting the abnormal compressor one by one comprises:

When the air conditioner contains at least two outdoor units, if the outdoor unit without the abnormal compressor meets the demand of the running second air conditioner indoor unit, the outdoor unit with the abnormal compressor is controlled to stop running; When the outdoor unit does not meet the demand of the second air conditioner indoor unit, the abnormal compressors in the outdoor units including the abnormal compressors are restarted successively.
The air-conditioning operation control method according to claim 5, wherein if the outdoor unit without the abnormal compressor does not meet the demand of the second air-conditioning indoor unit, the abnormal compression in the outdoor unit including the abnormal compressor is performed. The machine restarts successively, including:

If the outdoor unit without the abnormal compressor does not meet the demand for the second air conditioner indoor unit, the demand for the second air conditioner indoor unit is preferentially allocated to the outdoor unit without the abnormal compressor. When the outdoor unit of the compressor cannot meet the demand of the second air conditioner indoor unit, the unallocated demand in the demand of the second air conditioner indoor unit is allocated to the outdoor unit containing the abnormal compressor, and the outdoor unit containing the abnormal compressor is allocated. The abnormal compressor in the machine is restarted one by one.
The air-conditioning operation control method according to claim 6, wherein, if the outdoor unit without the abnormal compressor meets the demand of the second air-conditioning indoor unit, before controlling the outdoor unit including the abnormal compressor to stop the operation, include:

Determine the ratio of the total capacity of the air conditioner indoor unit in the running state to the outdoor unit that does not contain an abnormal compressor;

According to the ratio and a preset capacity judgment threshold, it is determined whether the outdoor unit that does not contain an abnormal compressor meets the demand of the second air conditioner indoor unit.
The air-conditioning operation control method according to claim 6, wherein the air-conditioning operation control method further comprises:

If the outdoor unit without the abnormal compressor meets the demand of the second air conditioner indoor unit, the outdoor unit with the abnormal compressor is controlled to stop running, and a first-level warning fault signal is issued;

When the safe operating range of the abnormal compressor is not found, the abnormal compressor is controlled to stop running, and a second-level warning fault signal is issued.
An air conditioner operation control device, characterized in that it includes:

The restart module is used to restart the abnormal compressor one by one when an abnormal compressor occurs in an outdoor unit of the air conditioner;

an adjustment module, used for successively reducing the operating parameter value of the abnormal compressor in order to find the safe operating range of the abnormal compressor;

The control module is configured to stop restarting and control the abnormal compressor to run in the safe operating range when it is found; and control the abnormal compressor to stop running when it is not found.
An air conditioner, characterized in that the air conditioner comprises the air conditioner operation control device of claim 9 .
A computer-readable storage medium, characterized in that an air-conditioning operation control program is stored on the computer-readable storage medium, and when the air-conditioning operation control program is executed by a processor, any one of claims 1-8 is implemented. The steps of the air-conditioning operation control method described above.