阅读说明：本技术 一种双系统空调控制方法、装置及双系统空调器 (Dual-system air conditioner control method and device and dual-system air conditioner ) 是由 包善棠 艾瑶 郭敏志 于 2021-08-20 设计创作，主要内容包括：本发明公开了一种双系统空调控制方法、装置及双系统空调器,属于空调控制领域；首先获取空调的当前运行模式是单系统运行还是双系统运行,然后获取当前运行模式下的运行参数,如运行频率和每个运行频率的运行时间,根据运行参数判断当前运行模式是否需要切换。这样能够根据运行参数及时切换运行模式,无需一直控制单系统运行或双系统运行,造成浪费。本申请方案根据运行频率和每个运行频率的运行时间判断空调的当前运行模式是否合适,不合适时及时切换,即能保证为用户提供适宜温度,又能节约能源消耗。(The invention discloses a method and a device for controlling a dual-system air conditioner and the dual-system air conditioner, belonging to the field of air conditioner control; firstly, whether the current operation mode of the air conditioner is single-system operation or double-system operation is obtained, then operation parameters in the current operation mode, such as operation frequency and operation time of each operation frequency, are obtained, and whether the current operation mode needs to be switched or not is judged according to the operation parameters. Therefore, the operation mode can be switched in time according to the operation parameters, and the single-system operation or the double-system operation does not need to be controlled all the time, thereby causing waste. According to the scheme, whether the current operation mode of the air conditioner is appropriate or not is judged according to the operation frequency and the operation time of each operation frequency, and timely switching is carried out when the current operation mode is inappropriate, so that the appropriate temperature can be guaranteed to be provided for a user, and the energy consumption can be saved.)

1. A control method for a dual-system air conditioner is characterized by comprising the following steps:

acquiring a current operation mode of the air conditioner, wherein the operation mode comprises single-system operation and double-system operation;

acquiring operation parameters of the air conditioner in a current operation mode, wherein the operation parameters comprise operation frequency and operation time of each operation frequency;

and judging whether the current operation mode needs to be switched or not according to the operation parameters.

2. The method of claim 1, wherein: when the current operation mode of the air conditioner is single-system operation, acquiring the operation parameters of the air conditioner in the current operation mode comprises the following steps:

and acquiring the running frequency of the air conditioner during the running of the single system, the running time of each running frequency and the actual indoor temperature.

3. The method of claim 2, wherein: the judging whether the current operation mode needs to be switched according to the operation parameters comprises the following steps:

when the air conditioner executes the frequency-increasing control, if the operation frequency is continuously the highest frequency in the current state and the operation time of the highest frequency in the current state continuously exceeds a first preset time length, judging whether the difference value between the actual indoor temperature and the set indoor temperature is greater than or equal to a preset temperature difference;

and if so, judging that the current operation mode needs to be switched into dual-system operation.

4. The method of claim 3, further comprising: when the current operation mode needs to be switched into the dual-system operation mode, judging whether the compressor downtime of the current non-operation system exceeds a second preset time length;

if the current running frequency exceeds the preset running frequency, controlling the electronic expansion valve of the current system which is not operated to be opened by the initial steps, and controlling the compressor of the current system which is not operated to be operated to operate according to the initial running time at the initial frequency;

controlling compressors of the two systems to respectively operate for a third time period at the same first preset frequency;

and controlling the compressors of the two systems to perform capacity operation regulation with ascending and descending.

5. The method of claim 4, wherein: the first preset frequency is one half of the highest frequency.

6. The method of claim 1, wherein: when the current operation mode of the air conditioner is dual-system operation, acquiring the operation parameters of the air conditioner in the current operation mode comprises the following steps:

and acquiring the operating frequency of the air conditioner in the operation of the dual system and the operating time of the air conditioner in each operating frequency.

7. The method of claim 6, wherein: the judging whether the current operation mode needs to be switched according to the operation parameters comprises the following steps:

when the air conditioner executes the frequency reduction control, if the running frequency is continuously the lowest frequency and the running time continuously the lowest frequency exceeds a fourth preset time, the current running mode is judged to be switched to the single-system running mode.

8. The method of claim 7, wherein: when the current operation mode needs to be switched to the single-system operation mode, acquiring the total operation time of the compressors of the two systems from the starting to the current time;

when the two total operation time lengths are different, the compressor with the long total operation time is controlled to stop, and the compressor with the short total operation time is controlled to be increased to the second preset frequency to operate for a fifth preset time length;

the control controls the compressor having a short total operation time to perform capacity operation adjustment.

9. The method of claim 1, further comprising:

when the display panel is opened, acquiring the ambient temperature;

when the environment temperature is not less than the preset starting temperature, controlling the air conditioner to start in a dual-system operation mode; and when the ambient temperature is lower than a preset starting temperature, controlling the air conditioner to start in a single-system running mode.

10. The method of claim 1, wherein: when the current operation mode is single system operation, if the operating system has a fault, controlling the system with the fault to stop, and switching to the system which does not operate to operate;

and when the system recovery of the fault is detected, acquiring the operating parameters of the air conditioner in the single-system operation, and judging whether the double-system operation needs to be switched according to the operating parameters.

11. The method of claim 1, wherein: when the current operation mode is the operation of double systems, if one system fails, the failed system is controlled to stop;

and when the system with the fault is detected to be recovered, acquiring the current operation parameters of the air conditioner, and judging whether the dual-system operation needs to be recovered or not according to the operation parameters.

12. The method of claim 1, wherein: when the current operation mode is the operation of the double systems, if the two systems are in failure, the two systems are controlled to stop;

and when the two systems are detected to be recovered, acquiring the ambient temperature, and judging whether the two systems operate in a single system or a double system according to the magnitude relation between the ambient temperature and the preset starting temperature.

13. A dual system air conditioning control apparatus, comprising:

the current operation mode acquisition module is used for acquiring the current operation mode of the air conditioner, and the operation mode comprises single-system operation and double-system operation;

the operation parameter acquisition module is used for acquiring operation parameters of the air conditioner in a current operation mode, wherein the operation parameters comprise operation frequencies and operation time of each operation frequency;

and the operation mode switching judgment module is used for judging whether the current operation mode needs to be switched or not according to the operation parameters.

14. A dual system air conditioner, comprising:

a processor; and the number of the first and second groups,

a memory for storing the processor-executable instructions;

the processor is configured to perform the method of claim 1.

Technical Field

The invention relates to the field of air conditioner control, in particular to a dual-system air conditioner control method and device and a dual-system air conditioner.

Background

The double-system air conditioner is an air conditioner with two refrigeration circulating systems, and the two refrigeration circulating systems are mutually independent and do not influence each other. The operation modes of the existing double-system air conditioner comprise two modes, wherein one mode is single-system operation; the other is dual system operation. The prior dual-system air conditioner adopts which operation mode to operate when generally starting in the control process, and operates in which mode, and the operation mode switching does not exist, but the control mode has the following problems:

when the demand is high, the single system has limited operation temperature regulation capacity and cannot meet the demand; when the demand is low, the dual-system operation can meet the demand, but the dual-system temperature regulation capacity utilization rate is low, and the energy is wasted.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a control method and a control device of a dual-system air conditioner and the dual-system air conditioner, so as to solve the problems that the prior dual-system air conditioner has no operation mode switching, and when the requirement is high, the single-system operation temperature regulating capability is limited, and the requirement cannot be met; when the demand is low, the dual-system operation can meet the demand, but the dual-system temperature regulation capacity utilization rate is low, and the energy is wasted.

The technical scheme adopted by the invention for solving the technical problems is as follows:

in a first aspect,

a control method of a dual-system air conditioner comprises the following steps:

acquiring a current operation mode of the air conditioner, wherein the operation mode comprises single-system operation and double-system operation;

acquiring operation parameters of the air conditioner in a current operation mode, wherein the operation parameters comprise operation frequency and operation time of each operation frequency;

and judging whether the current operation mode needs to be switched or not according to the operation parameters.

Further, when the current operation mode of the air conditioner is single-system operation, acquiring the operation parameters of the air conditioner in the current operation mode includes:

and acquiring the running frequency of the air conditioner during the running of the single system, the running time of each running frequency and the actual indoor temperature.

Further, the determining whether the current operation mode needs to be switched according to the operation parameter includes:

when the air conditioner executes the frequency-increasing control, if the operation frequency is continuously the highest frequency in the current state and the operation time of the highest frequency in the current state continuously exceeds a first preset time length, judging whether the difference value between the actual indoor temperature and the set indoor temperature is greater than or equal to a preset temperature difference;

and if so, judging that the current operation mode needs to be switched into dual-system operation.

Further, still include: when the current operation mode needs to be switched into the dual-system operation mode, judging whether the compressor downtime of the current non-operation system exceeds a second preset time length;

if the current running frequency exceeds the preset running frequency, controlling the electronic expansion valve of the current system which is not operated to be opened by the initial steps, and controlling the compressor of the current system which is not operated to be operated to operate according to the initial running time at the initial frequency;

controlling compressors of the two systems to respectively operate for a third time period at the same first preset frequency;

and controlling the compressors of the two systems to perform capacity operation regulation with ascending and descending.

Further, the first preset frequency is one half of the highest frequency.

Further, when the current operation mode of the air conditioner is dual-system operation, acquiring the operation parameters of the air conditioner in the current operation mode includes:

and acquiring the operating frequency of the air conditioner in the operation of the dual system and the operating time of the air conditioner in each operating frequency.

Further, the determining whether the current operation mode needs to be switched according to the operation parameter includes:

when the air conditioner executes the frequency reduction control, if the running frequency is continuously the lowest frequency and the running time continuously the lowest frequency exceeds a fourth preset time, the current running mode is judged to be switched to the single-system running mode.

Further, when the current operation mode needs to be switched to the single-system operation mode, acquiring the total operation time of the compressors of the two systems from the starting to the current operation time;

when the two total operation time lengths are different, the compressor with the long total operation time is controlled to stop, and the compressor with the short total operation time is controlled to be increased to the second preset frequency to operate for a fifth preset time length;

the control controls the compressor having a short total operation time to perform capacity operation adjustment.

Further, still include:

when the display panel is opened, acquiring the ambient temperature;

when the environment temperature is not less than the preset starting temperature, controlling the air conditioner to start in a dual-system operation mode; and when the ambient temperature is lower than a preset starting temperature, controlling the air conditioner to start in a single-system running mode.

Further, when the current operation mode is single system operation, if the operating system fails, the failed system is controlled to stop, and the system is switched to the non-operating system to operate;

and when the system recovery of the fault is detected, acquiring the operating parameters of the air conditioner in the single-system operation, and judging whether the double-system operation needs to be switched according to the operating parameters.

Further, when the current operation mode is dual-system operation, if one system fails, the failed system is controlled to stop;

and when the system with the fault is detected to be recovered, acquiring the current operation parameters of the air conditioner, and judging whether the dual-system operation needs to be recovered or not according to the operation parameters.

Further, when the current operation mode is the dual-system operation, if both the two systems are in failure, both the two systems are controlled to stop;

and when the two systems are detected to be recovered, acquiring the ambient temperature, and judging whether the two systems operate in a single system or a double system according to the magnitude relation between the ambient temperature and the preset starting temperature.

In a second aspect of the present invention,

a dual system air conditioning control apparatus comprising:

the current operation mode acquisition module is used for acquiring the current operation mode of the air conditioner, and the operation mode comprises single-system operation and double-system operation;

the operation parameter acquisition module is used for acquiring operation parameters of the air conditioner in a current operation mode, wherein the operation parameters comprise operation frequencies and operation time of each operation frequency;

and the operation mode switching judgment module is used for judging whether the current operation mode needs to be switched or not according to the operation parameters.

In a third aspect,

a dual system air conditioner comprising:

a processor; and the number of the first and second groups,

a memory for storing the processor-executable instructions;

the processor is configured to perform the method of the above technical solution.

This application adopts above technical scheme, possesses following beneficial effect at least:

the technical scheme of the application provides a dual-system air conditioner control method and device and a dual-system air conditioner. Therefore, the operation mode can be switched in time according to the operation parameters, and the single-system operation or the double-system operation does not need to be controlled all the time, thereby causing waste. According to the scheme, whether the current operation mode of the air conditioner is appropriate or not is judged according to the operation frequency and the operation time of each operation frequency, and timely switching is carried out when the current operation mode is inappropriate, so that the appropriate temperature can be guaranteed to be provided for a user, and the energy consumption can be saved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a flowchart of a control method for a dual-system air conditioner according to an embodiment of the present invention;

fig. 2 is a specific flowchart of a dual-system air conditioner control method according to an embodiment of the present invention;

fig. 3 is a switching flow chart of a dual-system air conditioner according to an embodiment of the present invention when a fault occurs;

fig. 4 is a schematic structural diagram of a dual-system air conditioner control device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a dual-system air conditioner according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the technical solutions of the present invention is provided with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, an embodiment of the present invention provides a dual-system air conditioner control method, including the following steps:

s11: acquiring a current operation mode of the air conditioner, wherein the operation mode comprises single-system operation and double-system operation;

s12: acquiring operation parameters of the air conditioner in a current operation mode, wherein the operation parameters comprise operation frequency and operation time of each operation frequency;

s13: and judging whether the current operation mode needs to be switched or not according to the operation parameters.

The embodiment of the invention provides a control method of a dual-system air conditioner, which comprises the steps of firstly obtaining whether the current operation mode of the air conditioner is single-system operation or dual-system operation, then obtaining operation parameters such as operation frequency and operation time of each operation frequency in the current operation mode, and judging whether the current operation mode needs to be switched or not according to the operation parameters. Therefore, the operation mode can be switched in time according to the operation parameters, and the single-system operation or the double-system operation does not need to be controlled all the time, thereby causing waste. The control method of the embodiment of the invention judges whether the current operation mode of the air conditioner is proper or not according to the operation frequency and the operation time of each operation frequency, and timely switches the operation mode when the operation mode is improper, thereby not only ensuring that proper temperature is provided for users, but also saving energy consumption.

As a supplementary explanation to the above embodiment of the invention, in the actual control process, control is started from the time of starting the air conditioner, as shown in fig. 2, when the display panel is turned on, the ambient temperature is acquired; when the ambient temperature is not less than the preset starting temperature, controlling the air conditioner to start in a dual-system operation mode; and when the ambient temperature is lower than the preset starting temperature, controlling the air conditioner to start in a single-system running mode. The preset starting temperature is a settable parameter, preferably the preset starting temperature is set to 32 ℃. It can be understood that when the ambient temperature is too high, the load requirement is large, and at the moment, the dual-system starting operation is adopted, so that the temperature can be quickly adjusted to meet the requirement. When the environmental temperature is not high, the load requirement is general, and at the moment, the single system is started, so that the requirement can be met, and the electric energy can be saved.

As an optional implementation manner of the embodiment of the present invention, when the current operation mode of the air conditioner is single system operation, acquiring the operation parameters of the air conditioner in the current operation mode includes: and acquiring the operating frequency of the air conditioner during the operation of the single system, the operating time of each operating frequency and the actual indoor temperature.

When the current operation mode is single-system operation, judging whether the current operation mode needs to be switched according to the operation parameters comprises the following steps: when the air conditioner executes frequency-increasing control, if the operation frequency is continuously the highest frequency in the current state, and the operation time of the highest frequency in the current state continuously exceeds a first preset time length, judging whether the difference value between the actual indoor temperature and the set indoor temperature is greater than or equal to a preset temperature difference; and if so, judging that the current operation mode needs to be switched into dual-system operation. When the air conditioner is subjected to frequency increase and the running time of the highest frequency in the current state exceeds a first preset time length, the running single system always runs under high load, at the moment, if the difference value between the actual indoor temperature and the set indoor temperature is larger than the preset temperature difference, the long-time high-load running of the single system cannot meet the requirement, and at the moment, the single system is judged to be switched to be operated under double systems. Preferably, the first preset time period is 30min, and the preset temperature difference is 2 ℃.

In addition, the highest frequency in the current state comprises the highest frequency in the normal condition and the highest frequency in the protection class limit frequency reduction state; theoretically, the highest frequency in the normal case should be performed according to the unit frequency to reach the highest allowable frequency, but the reserve space is considered not too much, so that the switching frequency point of the maximum frequency is lower than the highest frequency, for example, when the highest operation frequency is 85Hz, the highest frequency in the normal case is 80 Hz. The protection frequency-limiting state refers to a frequency-limiting state of exhaust protection, high-voltage protection, anti-freezing protection and the like. The maximum frequency is then the maximum frequency value after the limit, such as: the maximum frequency of the compressor is 80Hz, the frequency is reduced to 45Hz after high-voltage protection is carried out for 10min, at the moment, 45Hz is taken as the maximum frequency in the current state, the system switching is still carried out after 30min from the time of increasing to 80Hz (for example, if the time is 18:00 and 18:10, the high-voltage protection is carried out when the frequency is increased to 80Hz, a certain time is needed when the frequency is reduced to 45Hz from 80Hz, and if the time is 18:11 when the frequency is reduced to 45Hz, the temperature difference is more than 2 ℃ when the frequency is reduced to 18: 30 at the moment, the system switching is carried out when the compressor is operated for 19min again at 45 Hz) (namely, as long as the capacity adjustment always meets the frequency increasing condition, the maximum frequency can be reached, only the special protection limits the frequency increasing, the frequency point is calculated according to the limited frequency, and the time can still be calculated in an accumulative way).

It should be noted that the default of the first preset time period is 30min, and the first preset time period may also be set according to an actual situation. But the calculation means that the continuous time reaches 30min, if the capacity adjustment is carried out in the midway, the calculated running time is cleared, and the maximum running time of the system frequency is recalculated when the maximum running time is satisfied again.

In the single-system operation mode, when the current operation mode needs to be switched into the dual-system operation mode, judging whether the compressor downtime of the current non-operation system exceeds a second preset time length; if the current running frequency exceeds the preset running frequency, controlling the electronic expansion valve of the current system which is not operated to be opened by the initial steps, and controlling the compressor of the current system which is not operated to be operated to operate according to the initial running time at the initial frequency; controlling compressors of the two systems to respectively operate for a third time period at the same first preset frequency; and controlling the compressors of the two systems to perform capacity operation regulation with ascending and descending. The initial step number, the second preset time length of 3min, the initialization frequency, the initialization running time, the first preset frequency and the third preset time length can be set according to actual conditions. Preferably, the second preset duration is 3min, and the initialization frequency defaults to 25 Hz. The first preset frequency is half of the highest frequency, and the third preset time is 5 min.

It should be noted that, in a normal situation, the second system is started to indicate that the first system has been operated for a long time at a high frequency. At this time, the first system performs down-conversion, and the second system performs up-conversion. The two systems are independent and do not influence each other, the lifting frequency including capacity adjustment, fault protection and the like control the respective systems respectively, and the two systems are controlled to lift and descend simultaneously only after the system runs for a third preset time after reaching half of the highest frequency. If this is not done, one system runs at a high frequency for a long time while the other runs at a low frequency. The system operating at high frequency is noisy, so that the two system steps are as consistent as possible. And after the second system is started and the highest frequency of 1/2 is maintained for 5min, the two systems are added with capacity regulation, and the systems enter the capacity regulation together according to the relation between the room temperature and the set temperature. When the air conditioner breaks down, whether the single system needs to be switched into the double system is judged according to the requirements, the double system is probably switched into the single system at the moment, if the single system is directly controlled to switch the double system at the moment, the single system and the double system are frequently switched and the electric energy is wasted, and therefore when the single system is judged to be needed to switch the double system, a limiting condition is added: and judging whether the shutdown time of the compressor of the current non-operating system exceeds a second preset time length. Therefore, the situation that the system is frequently switched can be effectively avoided.

For example, the capacity operation conditions mentioned above are: (Δ T ═ actual room temperature-set room temperature, that is, Δ T ═ tacit room temperature-T set room temperature).

A) If the delta T is more than or equal to 8 ℃, the temperature is increased by 8 Hz;

B) if the temperature T is more than 8 and more than or equal to 6 ℃, the frequency of the compressor is increased by 5 Hz;

C) if the temperature is more than 6 delta T and is more than or equal to 4 ℃, the frequency of the compressor is increased by 2 Hz;

D) if the temperature is more than 4 and delta T is more than or equal to 2 ℃, the frequency of the compressor is increased by 1 Hz;

E)2, when the delta T is more than or equal to-2 ℃, the compressor maintains the current operating frequency;

F) -2> Δ T ≧ 3 ℃, the compressor frequency is reduced by 2Hz, if reduced to the lowest frequency, the lowest frequency operation is maintained;

G) -3 ℃ > Δ T, the compressor frequency is reduced by 5Hz, if reduced to the lowest frequency, the lowest frequency operation is maintained;

likewise, the compressor frequency can only be increased to the highest frequency. Of course, the highest frequency may be set, up to 80, by default to 80.

As an optional implementation manner of the embodiment of the present invention, when the current operation mode of the air conditioner is dual system operation, acquiring the operation parameters of the air conditioner in the current operation mode includes: and acquiring the operating frequency of the air conditioner when the dual system operates and the operating time of the air conditioner at each operating frequency.

When the dual system operates, judging whether the current operation mode needs to be switched according to the operation parameters comprises the following steps: when the air conditioner executes the frequency reduction control, if the running frequency is continuously the lowest frequency and the running time continuously being the lowest frequency exceeds a fourth preset time length, the current running mode is judged to be required to be switched to the single-system running mode. The lowest frequency is a little higher than the lowest allowable frequency, and the specific numerical values of the lowest frequency and the fourth preset duration can be set according to actual conditions. Preferably, the fourth preset time period is 30 min.

When the current operation mode needs to be switched to the single-system operation mode, acquiring the total operation time of the compressors of the two systems from the starting to the current time; when the two total operation time lengths are different, the compressor with the long total operation time is controlled to stop, and the compressor with the short total operation time is controlled to be increased to the second preset frequency to operate for a fifth preset time length; the control controls the compressor having a short total operation time to perform capacity operation adjustment. When the two total operation lengths are the same, in order to clarify the control logic, one system is preset as a first system, the first system is controlled to stop, and the setting of the first system is set according to actual needs. The second preset frequency and the fifth preset time period may be set according to actual conditions, and preferably, the second preset frequency is 60Hz, and the fifth preset time period is 5 min.

As shown in fig. 3, when a system fails, when the current operation mode is single system operation, if the operating system fails, the system with the failure is controlled to stop, and the system is switched to operate without operation; and when the system with the fault is detected to recover, acquiring the operating parameters of the air conditioner in the operation of the single system, and judging whether the double-system operation needs to be switched according to the operating parameters. The determination of whether to switch the dual system operation according to the operation parameters is described in detail above, and is not described herein again.

When the current operation mode is the dual-system operation, if one system fails, the failed system is controlled to stop; and when the system with the fault is detected to be recovered, acquiring the current operating parameters of the air conditioner, and judging whether the dual-system operation needs to be recovered according to the operating parameters. The above detailed description of determining whether to resume the dual system operation according to the operation parameters is omitted here.

When the current operation mode is the operation of the double systems, if the two systems are in failure, the two systems are controlled to stop; and when the two systems are detected to be recovered, acquiring the ambient temperature, and judging whether the two systems operate in a single system or a double system according to the magnitude relation between the ambient temperature and the preset starting temperature. The determination of whether to operate in a single system or in a dual system is described in detail above according to the magnitude relationship between the ambient temperature and the preset start temperature, and is not described herein again.

The embodiment of the invention provides a control method of a dual-system air conditioner, which provides a reasonable and energy-saving control method for single and dual system starting and system switching of an air conditioning system when a unit is normally started, operated or in fault, and intelligently starts and switches the single and dual systems according to specific actual conditions; the problems of reasonable starting of the air conditioning system, reasonable switching of a single system and a double system and reasonable closing/opening of the system after failure and recovery are solved. The control method has the advantages of energy conservation, consumption reduction, more reasonable and comfortable temperature control and capability of greatly improving user experience.

In one embodiment, the present invention further provides a dual system air conditioner control device, as shown in fig. 4, including:

a start mode judgment module 41, configured to obtain an ambient temperature after the display panel is turned on; when the ambient temperature is not less than the preset starting temperature, controlling the air conditioner to start in a dual-system operation mode; and when the ambient temperature is lower than the preset starting temperature, controlling the air conditioner to start in a single-system running mode.

And a current operation mode obtaining module 42, configured to obtain a current operation mode of the air conditioner, where the operation mode includes a single-system operation and a dual-system operation.

An operation parameter obtaining module 43, configured to obtain operation parameters of the air conditioner in a current operation mode, where the operation parameters include operation frequencies and an operation time of each operation frequency; specifically, when the current operation mode of the air conditioner is single-system operation, acquiring the operation parameters of the air conditioner in the current operation mode includes: and acquiring the operating frequency of the air conditioner during the operation of the single system, the operating time of each operating frequency and the actual indoor temperature. When the current operation mode of the air conditioner is the dual-system operation, the obtaining of the operation parameters of the air conditioner in the current operation mode comprises the following steps: and acquiring the operating frequency of the air conditioner when the dual system operates and the operating time of the air conditioner at each operating frequency.

And an operation mode switching judgment module 44, configured to judge whether a current operation mode needs to be switched according to the operation parameter. Specifically, when the single system runs and the air conditioner executes frequency-up control, if the running frequency is continuously the highest frequency in the current state and the running time of the highest frequency in the current state continuously exceeds a first preset time length, whether the difference value between the actual indoor temperature and the set indoor temperature is larger than or equal to a preset temperature difference or not is judged; and if so, judging that the current operation mode needs to be switched into dual-system operation. When the current operation mode needs to be switched into the dual-system operation mode, judging whether the compressor downtime of the current non-operation system exceeds a second preset time length; if the current running frequency exceeds the preset running frequency, controlling the electronic expansion valve of the current system which is not operated to be opened by the initial steps, and controlling the compressor of the current system which is not operated to be operated to operate according to the initial running time at the initial frequency; controlling compressors of the two systems to respectively operate for a third time period at the same first preset frequency; and controlling the compressors of the two systems to perform capacity operation regulation with ascending and descending. Wherein the first predetermined frequency is one half of the highest frequency.

When the dual-system operation is performed and the air conditioner executes the frequency reduction control, if the operation frequency is continuously the lowest frequency and the operation time continuously being the lowest frequency exceeds a fourth preset time length, it is determined that the current operation mode needs to be switched to the single-system operation. When the current operation mode needs to be switched to the single-system operation mode, acquiring the total operation time of the compressors of the two systems from the starting to the current time; when the two total operation time lengths are different, the compressor with the long total operation time is controlled to stop, and the compressor with the short total operation time is controlled to be increased to the second preset frequency to operate for a fifth preset time length; the control controls the compressor having a short total operation time to perform capacity operation adjustment.

A failure recovery switching module 45, configured to, when the current operation mode is single system operation, if an operating system fails, control the failed system to stop, and switch to non-operating system operation; and when the system with the fault is detected to recover, acquiring the operating parameters of the air conditioner in the operation of the single system, and judging whether the double-system operation needs to be switched according to the operating parameters. The system is also used for controlling the system shutdown of the fault if one system has the fault when the current operation mode is the dual-system operation; and when the system with the fault is detected to be recovered, acquiring the current operating parameters of the air conditioner, and judging whether the dual-system operation needs to be recovered according to the operating parameters. When the current operation mode is the operation of the double systems, if the two systems are in failure, the two systems are controlled to stop; and when the two systems are detected to be recovered, acquiring the ambient temperature, and judging whether the two systems operate in a single system or a double system according to the magnitude relation between the ambient temperature and the preset starting temperature.

The embodiment of the invention provides a dual-system air conditioner control device, which comprises: the starting mode judging module judges whether the single system is used for starting operation or the double system is used for starting operation according to the environment temperature, the double systems do not need to be directly started simultaneously during starting, and the single system is directly used for starting when the environment temperature is lower, so that the energy is saved; the current operation mode acquisition module acquires a current operation mode of the air conditioner; the operation parameter acquisition module acquires operation parameters of the air conditioner in a current operation mode;

and the operation mode switching judgment module judges whether the current operation mode needs to be switched or not according to the operation parameters. The operation mode is switched in time according to the operation parameters, so that the normal operation of the air conditioner is ensured, and the energy conservation and emission reduction are realized; the fault recovery switching module judges whether the double systems need to be switched or not when the single system can run, the double systems do not need to be switched, and energy is saved.

In one embodiment, the present invention provides a dual system air conditioner, as shown in fig. 5, including:

a processor 51; and the number of the first and second groups,

a memory 52 for storing instructions executable by the processor 51;

the processor is configured to perform the dual system air conditioner control method provided in the above-described embodiments.

According to the dual-system air conditioner provided by the embodiment of the invention, after the processor executes the executable instruction in the memory, the starting, switching and fault recovery post-processing can be quickly realized when the dual-system air conditioner is started, switched and subjected to fault recovery post-processing. Not only can accurately provide proper temperature for users, but also can save energy and reduce consumption.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.

It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.