Multi-connected air conditioner control method, device, equipment and storage medium

Abstract

The present invention discloses a multi-split air conditioner control method, device, equipment and storage medium, and relates to the field of air conditioning technology. The method includes: when it is detected that the indoor unit of the multi-split air conditioner is set to multiple working modes, obtaining the capacity information of the indoor unit corresponding to each working mode; determining the target working mode from the multiple working modes according to the capacity information; determining the first control parameter of the outdoor unit of the multi-split air conditioner based on the target working mode, and driving the outdoor unit according to the first control parameter. When the indoor unit of the multi-split air conditioner operates in different working modes, the present invention determines the highest priority working mode from each working mode according to the capacity of the indoor unit, and calculates the control parameters of the outdoor unit based on the determined highest priority working mode, so that the outdoor unit gives priority to guaranteeing the needs of the indoor unit operating in the highest priority working mode, thereby adjusting the operating state of the outdoor unit in real time, ensuring that user needs can be met, and improving user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a multi-split air conditioning control method, device, equipment and storage medium. Background Art

[0002] A multi-split air conditioner has multiple indoor units. Due to individual differences, the indoor units may operate in different working modes; for example, some indoor units are in cooling mode, and some indoor units are in windless mode. Due to the different working modes, the requirements of the external units are different. At present, it is difficult for multi-split air conditioners to balance the needs of different users, resulting in poor user experience. Therefore, how to improve the user experience of multi-split air conditioners is a technical problem that needs to be solved urgently. Summary of the invention

[0003] The main purpose of the present invention is to provide a multi-split air conditioner control method, device, equipment and storage medium, aiming to solve the technical problem in the prior art that multi-split air conditioners are difficult to balance the needs of different users, resulting in poor user experience.

[0004] To achieve the above object, the present invention provides a multi-split air conditioner control method, which comprises the following steps:

[0005] When it is detected that the indoor unit of the multi-split air conditioner is set to multiple working modes, the capacity information of the indoor unit corresponding to each working mode is obtained;

[0006] determining a target working mode from among a plurality of working modes according to the capacity information;

[0007] A first control parameter of an outdoor unit of the multi-split air conditioner is determined based on the target working mode, and the outdoor unit is driven according to the first control parameter.

[0008] Optionally, determining a first control parameter of an outdoor unit of the multi-split air conditioner based on the target working mode, and driving the outdoor unit according to the first control parameter includes:

[0009] When the target working mode is the windless mode, the environmental parameters of the environment in which each indoor unit is located are obtained;

[0010] When the environmental parameters meet the cooling conditions, determine the minimum cooling temperature corresponding to the indoor unit of the multi-split air conditioner;

[0011] A first control parameter of the outdoor unit is determined according to the lowest refrigeration temperature, and the outdoor unit is driven according to the first control parameter.

[0012] Optionally, after obtaining the environmental parameters of the environment in which each indoor unit is located, the following further includes:

[0013] When the environmental parameters do not meet the cooling conditions, the humidity value of the environment where the indoor unit is located in the windless mode is determined according to the environmental parameters;

[0014] A first control parameter of the outdoor unit is determined according to the humidity value, and the outdoor unit is driven according to the first control parameter.

[0015] Optionally, determining a first control parameter of an outdoor unit of the multi-split air conditioner based on the target working mode, and driving the outdoor unit according to the first control parameter includes:

[0016] When the target working mode is the cooling mode, determining the minimum cooling temperature corresponding to the indoor unit of the multi-split air conditioner;

[0017] A first control parameter of the outdoor unit is determined according to the lowest refrigeration temperature, and the outdoor unit is driven according to the first control parameter.

[0018] Optionally, after driving the external machine according to the first control parameter, the method further includes:

[0019] Get the current control parameters of each indoor unit in the windless mode;

[0020] Determine a second control parameter according to the first control parameter and the current control parameter;

[0021] Each indoor unit set to the no-wind mode is driven according to the second control parameter.

[0022] Optionally, a target working mode is determined from a plurality of working modes according to the capacity information, including:

[0023] The working mode set for the indoor unit corresponding to the maximum capacity in the capacity information is used as the target working mode.

[0024] Optionally, a target working mode is determined from a plurality of working modes according to the capacity information, including:

[0025] Get the capacity information of the outdoor unit of the multi-split air conditioner;

[0026] Determine the ratio between the capacity information corresponding to each working mode and the capacity information of the external unit;

[0027] The target working mode is determined according to the proportional value.

[0028] In addition, to achieve the above-mentioned purpose, the present invention also proposes a multi-split air conditioner control device, the multi-split air conditioner control device comprising:

[0029] A collection module, for obtaining capacity information of the indoor units corresponding to each working mode when detecting that the indoor units of the multi-split air conditioner are set to multiple working modes;

[0030] an analysis module, for determining a target working mode from a plurality of working modes according to the capacity information;

[0031] The driving module is used to determine a first control parameter of an outdoor unit of the multi-split air conditioner based on a target working mode, and drive the outdoor unit according to the first control parameter.

[0032] In addition, to achieve the above-mentioned purpose, the present invention also proposes a multi-split air-conditioning control device, which includes: a memory, a processor, and a multi-split air-conditioning control program stored in the memory and executable on the processor. When the multi-split air-conditioning control program is executed by the processor, the multi-split air-conditioning control method as described above is implemented.

[0033] In addition, to achieve the above-mentioned purpose, the present invention also proposes a storage medium, on which a multi-split air conditioner control program is stored. When the multi-split air conditioner control program is executed by a processor, the multi-split air conditioner control method as described above is implemented.

[0034] In the present invention, when it is detected that the indoor unit of the multi-split air conditioner is set to multiple working modes, the capacity information of the indoor unit corresponding to each working mode is obtained; the target working mode is determined from the multiple working modes according to the capacity information; the first control parameter of the outdoor unit of the multi-split air conditioner is determined based on the target working mode, and the outdoor unit is driven according to the first control parameter. When the indoor unit of the multi-split air conditioner operates in different working modes, the present invention determines the highest priority working mode from each working mode according to the capacity of the indoor unit, and calculates the control parameters of the outdoor unit based on the determined highest priority working mode, so that the outdoor unit gives priority to guaranteeing the needs of the indoor unit operating in the highest priority working mode. This embodiment detects the operating status of the multi-split air conditioner in real time, thereby adjusting the operating status of the outdoor unit in real time, ensuring that user needs can be met and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of a multi-split air conditioning control device in a hardware operating environment involved in an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of a flow chart of a first embodiment of a multi-split air conditioner control method of the present invention;

[0037] Figure 3 A schematic diagram of a flow chart of a second embodiment of a multi-split air conditioner control method of the present invention;

[0038] Figure 4 A schematic diagram of a flow chart of a third embodiment of a multi-split air conditioner control method of the present invention;

[0039] Figure 5 It is a structural block diagram of the first embodiment of the multi-split air conditioner control device of the present invention.

[0040] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0042] Reference Figure 1 , Figure 1 The present invention is a schematic diagram of the structure of a multi-split air conditioning control device in the hardware operating environment involved in the embodiment of the present invention.

[0043] like Figure 1 As shown, the multi-connected air conditioning control device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), and the user interface 1003 may also include a standard wired interface and a wireless interface. The wired interface of the user interface 1003 may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wireless-Fidelity, Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM) memory, or a stable memory (Non-volatile Memory, NVM), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0044] Those skilled in the art will understand that Figure 1 The structure shown in does not constitute a limitation on the multi-split air conditioning control device, and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0045] like Figure 1 As shown, the memory 1005 identified as a computer storage medium may include an operating system, a network communication module, a user interface module, and a multi-connected air conditioner control program.

[0046] exist Figure 1 In the multi-split air-conditioning control device shown, the network interface 1004 is mainly used to connect to the background server and communicate data with the background server; the user interface 1003 is mainly used to connect to the user device; the multi-split air-conditioning control device calls the multi-split air-conditioning control program stored in the memory 1005 through the processor 1001, and executes the multi-split air-conditioning control method provided by the embodiment of the present invention.

[0047] Based on the above hardware structure, an embodiment of a multi-split air conditioner control method of the present invention is proposed.

[0048] Reference Figure 2 , Figure 2 The flowchart of the first embodiment of the multi-split air conditioner control method of the present invention is shown in FIG.

[0049] In a first embodiment, the multi-split air conditioner control method comprises the following steps:

[0050] Step S10: when it is detected that the indoor units of the multi-split air conditioner are set to multiple working modes, the capacity information of the indoor units corresponding to each working mode is obtained.

[0051] It should be understood that the executor of this embodiment is the above-mentioned multi-split air-conditioning control device, which has functions such as data processing, data communication and program running. The multi-split air-conditioning control device can be a control box device integrated in the air conditioner, and can further be a control box in the middle and outdoor units of the multi-split air conditioner. Of course, it can also be other devices with similar functions, and this embodiment does not limit this.

[0052] A multi-split air conditioner includes an outdoor unit and multiple indoor units. The refrigerants in each indoor unit are combined and heat exchanged in an outdoor unit. Each indoor unit can be controlled independently, that is, each indoor unit can be set to a different working mode; the working modes mainly include windless mode, cooling mode or heating mode. The indoor units of a multi-split air conditioner are set to multiple working modes, which means that at least two indoor units have different working modes, such as at least one indoor unit is set to cooling mode and at least one indoor unit is set to windless mode.

[0053] Different working modes have different requirements for the evaporation temperature of the outdoor unit. For example, in the windless mode, the outdoor unit needs to provide a suitable temperature and comfortable wind feeling while avoiding the risk of condensation, so a higher evaporation temperature is required in the control. In the cooling mode, a comfortable temperature and faster cooling are desired, so the outdoor unit needs to provide a lower evaporation temperature in the control.

[0054] The capacity information can be the cooling capacity of the air conditioner. Each indoor unit is classified according to the set working mode, and the sum of the cooling capacity of each indoor unit in each working mode is calculated. For example, indoor units 1, 2, and 3 are set to cooling mode, and indoor units 4 and 5 are set to windless mode; the acquired capacity information includes the sum A of the cooling capacity of indoor units 1, 2, and 3 in cooling mode, and the sum B of the cooling capacity of indoor units 4 and 5 in windless mode. When the multi-split air conditioner is running, each indoor unit can detect its own operating parameters in real time or at a fixed time, and then feed the parameters back to the outdoor unit. The outdoor unit determines the capacity information of each indoor unit based on the received parameters.

[0055] Step S20: determining a target working mode from a plurality of working modes according to the capacity information.

[0056] Although the indoor unit is set to multiple working modes, the outdoor unit can only be in one operating state. Therefore, in order to ensure the user experience, it is necessary to ensure that some indoor units can operate according to the original requirements, while also avoiding large fluctuations in other indoor units and not deviating from the original requirements. These indoor units are the indoor units corresponding to the target working mode with the highest priority.

[0057] In this embodiment, the priority of each working mode is determined based on the capacity information; for example, the working mode with the highest cooling capacity is used as the target working mode; or, considering the user's preference for different working modes, the cooling capacity corresponding to each working mode is corrected according to a preset weight value, and then the working mode with the highest cooling capacity is used as the target working mode; of course, the selection method of the target working mode can be set according to user needs, and this embodiment does not limit this.

[0058] Since user needs may change at any time, the target working mode may also change. For example, assuming that the cooling capacity of the indoor units 1, 2, 3, 4, and 5 is the same, when all are turned on, the target working mode is the cooling mode; if the user turns off indoor units 1 and 2, the target working mode is the windless mode. The target working mode can be judged at regular intervals to respond to user operations in a timely manner.

[0059] Step S30: determining a first control parameter of an outdoor unit of the multi-split air conditioner based on the target working mode, and driving the outdoor unit according to the first control parameter.

[0060] In cooling mode, the outdoor unit needs to release heat to the input high-temperature and high-pressure refrigerant and output low-temperature and low-pressure refrigerant to the indoor unit. Therefore, the first control parameter can be the evaporation temperature of the outdoor unit or the operating frequency of the compressor.

[0061] The multi-split air conditioner control device is pre-set with a calculation method for the first control parameter in different working modes. After the target working mode is established, the first control parameter is determined based on the calculation method corresponding to the target working mode. The calculation method of the first control parameter can be set according to user experience, and this embodiment does not limit this. If the indoor unit of the multi-split air conditioner is set to only one working mode, the multi-split air conditioner control device can directly determine the corresponding control parameter according to the preset calculation method.

[0062] After determining the first control parameter, if the first control parameter is the evaporation temperature, the external unit is controlled and the compressor power is controlled according to the evaporation temperature of the external unit; or, if the first control parameter is the compressor frequency, the compressor power is made to reach the frequency in the first control parameter.

[0063] In the first embodiment, when the indoor unit of the multi-split air conditioner operates in different working modes, the working mode with the highest priority is determined from the working modes according to the capacity of the indoor unit, and the control parameters of the outdoor unit are calculated based on the determined working mode with the highest priority, so that the outdoor unit gives priority to guaranteeing the needs of the indoor unit operating in the working mode with the highest priority. This embodiment detects the operating state of the multi-split air conditioner in real time, thereby adjusting the operating state of the outdoor unit in real time, ensuring that user needs can be met and improving user experience.

[0064] Reference Figure 3 , Figure 3 1 is a flow chart of a second embodiment of a multi-split air conditioner control method according to the present invention. Based on the above-mentioned first embodiment, a second embodiment of a multi-split air conditioner control method according to the present invention is proposed.

[0065] In the second embodiment, in order to better control the external device to improve the user experience, before step S30, the following steps are included:

[0066] Step S301: when the target working mode is the windless mode, the environmental parameters of the environment in which each indoor unit is located are obtained.

[0067] Environmental parameters may include temperature and humidity values, etc. A temperature sensor and a humidity sensor may be pre-installed on the indoor unit. When the indoor unit detects its own operation, it synchronously reads the detection values ​​of the temperature sensor and the humidity sensor, and sends the detected temperature and humidity values ​​to the outdoor unit. The outdoor unit receives the transmitted data to obtain the environmental parameters of the environment in which each indoor unit is located.

[0068] Step S302: When the environmental parameters meet the cooling conditions, determine the minimum cooling temperature corresponding to the indoor unit of the multi-split air conditioner.

[0069] Usually, between temperature and wind sensation, users are more sensitive to temperature. Therefore, even if the windless mode is required as the target working mode, the user's demand for temperature still needs to be considered. If the temperature is too high, it is necessary to cool it down first; or, when the humidity of the environment in which the indoor unit is located is high in the windless mode, condensation is likely to occur in the windless mode. If the humidity is too high, it is necessary to cool it down first.

[0070] Considering the above two factors, it is necessary to first identify the environment of each indoor unit to determine whether there is a cooling demand. If so, cooling control is performed first. Specifically, the temperature and humidity thresholds can be set. When the detected temperature value or humidity value exceeds the set threshold, it is determined that the environmental parameters meet the cooling conditions. For example, the temperature threshold can be T1a+C1, where T1a is 30°C and the recommended range is 26 to 32; the engineering parameter C1 is recommended to be 0°C, with a range of -5 to 5°C; the humidity threshold can be Hx, where Hx is 85%, with a preferred range of 70% to 90%. If the detected ambient temperature T1 of each indoor unit or the humidity value H1 of the indoor unit in the windless mode satisfies T1>T1a+C1, or H1>Hx, it is determined that the environmental parameters meet the cooling conditions. This judgment process can be performed once every first time to avoid refrigeration for too long, affecting the experience of users who have a demand for the windless mode.

[0071] After the refrigeration control is required, the corresponding refrigeration parameters need to be determined. The minimum refrigeration temperature refers to the minimum value of the set refrigeration temperature of each indoor unit, and the set refrigeration temperature is the expected refrigeration temperature set by the user.

[0072] Step S303: determining a first control parameter of the outdoor unit according to the lowest refrigeration temperature, and driving the outdoor unit according to the first control parameter.

[0073] After determining the minimum cooling temperature, the evaporation temperature of the refrigerant output by the outdoor unit or the operating frequency of the compressor is calculated according to a preset calculation method, and then the outdoor unit is controlled according to the determined first control parameter. In the cooling mode, there is a mature technology for determining the control parameters of the outdoor unit, which will not be described in detail in this embodiment.

[0074] Correspondingly, when the environmental parameters do not meet the cooling conditions, it means that the first control parameter can be directly determined according to the calculation method of the windless mode. Specifically, the humidity value of the environment in which the indoor unit is located in the windless mode is first determined according to the environmental parameters; then the first control parameter of the outdoor unit is determined according to the humidity value, and the outdoor unit is driven according to the first control parameter.

[0075] The specific method of whether the environmental parameters meet the cooling conditions can refer to the above content. Of course, after the above cooling control, when the ambient temperature of each indoor unit is low and the humidity of the environment of the indoor unit in the windless mode is low, the windless mode control can also be performed.

[0076] In order to ensure the control effect in the windless mode, the humidity value referred to in calculating the first control parameter should be the maximum humidity value among the humidity values ​​corresponding to each indoor unit set to the windless mode, thereby ensuring that all indoor units set to the windless mode can achieve the expected user experience.

[0077] Specifically, when the target working mode is the no-wind mode, the calculation process of the first control parameter may refer to the following formula:

[0078] b=Td-C1

[0079] Among them, b is the temperature value of the output refrigerant, Td is the dew point temperature of the indoor unit set to the windless mode, C1 is an engineering constant, and the specific value can be set according to user needs. For example, its value range can be 0 to 12°C, preferably 5°C.

[0080] The dew point temperature can be calculated using the following formula:

[0081]

[0082] T=T1++273.15

[0083] Among them, T d is the dew point temperature, which is usually in the range of [6, 22]°C, H1 is the maximum humidity value, which is usually in the range of [20%, 90%], C8, C9, C 10 , C 11 , C 12 , C 13 It is an engineering constant, and its specific value can be set according to the user's needs. For example, C8 = -5800.2206, C9 = 1.3914993, C 10 =-0.04860239, C 11 =0.41764768*10 -4 , C 12 =-0.14452093*10 -7 , C 13 =6.5459673, T1 is the ambient temperature of the windless indoor unit, which is usually in the range of [16, 30]℃.

[0084] In addition, if the determined target working mode is the cooling mode, the calculation method of the first control parameter can refer to step S303, which is also to determine the minimum cooling temperature corresponding to the indoor unit of the multi-split air conditioner; then determine the first control parameter of the outdoor unit according to the minimum cooling temperature, and drive the outdoor unit according to the first control parameter. This embodiment is not repeated here.

[0085] In the second embodiment, when the target working mode is the windless mode, the outdoor unit first determines whether the environment in which each indoor unit is located needs to be cooled before determining the control parameters according to the windless mode, thereby avoiding the user from not being able to obtain the expected cooling effect or condensation occurring, thereby reducing the user experience; when cooling control is required, the corresponding control parameters are first determined according to the cooling mode, and when cooling is no longer required, the control parameters are determined according to the windless mode to control the outdoor unit and improve the user experience.

[0086] Reference Figure 4 , Figure 4 1 is a flow chart of a third embodiment of a multi-split air conditioner control method according to the present invention. Based on the first and second embodiments described above, a third embodiment of a multi-split air conditioner control method according to the present invention is proposed.

[0087] In the third embodiment, in order to improve the user experience, the internal unit also needs to be adjusted while the external unit is adjusted, so after step S30, the following is also included:

[0088] S40: Acquire current control parameters of each indoor unit set to the no-wind mode.

[0089] The control part of the indoor unit mainly includes the opening control of the electronic expansion valve, the speed control of the fan and the angle control of the air guide plate. This embodiment is mainly described by the control of the indoor unit set to the windless mode, and the indoor unit set to the cooling mode can adopt the corresponding control method.

[0090] The wind guide plate can usually keep the upper and lower wind guide plates at the maximum angle, and the vertical wind guide strip at the windless angle. If the user sets other angles, the angle of the corresponding wind guide plate will be set to the user-set angle.

[0091] The fan control is mainly divided into automatic control and manual control. Manual control means that the fan speed is determined according to the wind speed set by the user, and automatic control means that the fan speed is determined according to the difference between the ambient temperature detected by the indoor unit and the temperature set by the user. For example, the difference between the ambient temperature and the set temperature is divided into multiple difference intervals, and the corresponding speed is set for each interval. For example, in the decreasing curve of the speed, the corresponding relationship between the difference and the speed is: <0℃ corresponds to the wind speed of 80 gears, 0℃~0.5℃ corresponds to the wind speed of 1 gear, 0.5℃~1℃ corresponds to the wind speed of 20 gears, 1℃~1.5℃ corresponds to the wind speed of 40 gears, 1.5℃~3.5℃ corresponds to the wind speed of 60 gears, and >3.5℃ corresponds to the wind speed of 80 gears; in the increasing curve of the speed, the corresponding relationship between the difference and the speed is: <0.5℃ corresponds to the wind speed of 1 gear, 0.5℃~1℃ corresponds to the wind speed of 20 gears, 1℃~1.5℃ corresponds to the wind speed of 40 gears, 1.5℃~2℃ corresponds to the wind speed of 60 gears, and 2℃~4℃ corresponds to the wind speed of 80 gears. Of course, the specific difference interval division and the corresponding speed can be set according to user needs, and this embodiment does not limit this.

[0092] The opening of the electronic expansion valve needs to be controlled according to the superheat, and the corresponding relationship between the two is affected by the evaporation temperature of the indoor and outdoor units. Therefore, the current control parameters in this embodiment mainly include the evaporation temperature of the indoor unit. The evaporation temperature is mainly related to the humidity value of the environment in which each indoor unit is located, so the evaporation temperature of each indoor unit may be the same or different. The specific calculation method refers to the second embodiment, and this embodiment will not be repeated here.

[0093] S50: Determine a second control parameter according to the first control parameter and the current control parameter.

[0094] The second control parameter may be the opening of the electronic expansion valve. To determine the opening of the electronic expansion valve, the superheat parameter needs to be determined first. The superheat parameter is mainly related to the humidity value of the environment in which the indoor unit is located. The higher the humidity, the greater the superheat.

[0095] In order to better determine the superheat, the present embodiment first determines the relationship between the superheat and the humidity value according to the evaporation temperature of the outdoor unit and the evaporation temperature of the indoor unit. For example, when the evaporation temperature of the indoor unit is greater than or equal to the evaporation temperature of the outdoor unit, the superheat value range is the first temperature range, such as 2 to 8°C, and the superheat parameter is determined based on the detected current humidity and the preset corresponding relationship between the two.

[0096] When the evaporation temperature of the indoor unit is lower than that of the outdoor unit, the range of superheat is the second temperature range, such as 1-9°C. At this time, there are two corresponding curves between the superheat and the humidity value, namely, an ascending curve and a descending curve. The ascending curve means that the humidity value is on an ascending trend when the indoor unit is running, and the descending curve means that the humidity value is on a descending trend when the indoor unit is running. At this time, it is necessary to further determine the corresponding superheat according to the control trend of the humidity value by the indoor unit.

[0097] Specifically, the humidity interval can be set in the rising curve or the falling curve, and the corresponding superheat parameter can be set for each humidity interval; for example, in the rising curve, the corresponding relationship between the humidity value and the superheat is: >75% corresponds to a superheat of 9°C, 65%-75% corresponds to a superheat of 7°C, 55%-65% corresponds to a superheat of 5°C, and <55% corresponds to a superheat of 1°C; in the falling curve, the corresponding relationship between the humidity value and the superheat is: >70% corresponds to a superheat of 9°C, 60%-70% corresponds to a superheat of 7°C, 50%-60% corresponds to a superheat of 5°C, and <50% corresponds to a superheat of 1°C. Of course. The humidity value interval and the corresponding superheat can also be set according to user needs, and this embodiment is not limited to this.

[0098] The correspondence between the superheat and the opening of the electronic expansion valve can be determined according to a preset correspondence. After the superheat is determined according to the above method, the opening of the electronic expansion valve is further determined based on the preset correspondence.

[0099] S60: driving each indoor unit set to the no-wind mode according to the second control parameter.

[0100] It can be understood that after determining the opening of the electronic expansion valve, the opening of the electronic expansion valve corresponding to each indoor unit is set to a corresponding opening value, thereby controlling each indoor unit set to the no-wind mode.

[0101] In addition, in order to better determine the target working mode, the present embodiment also proposes two ways to determine the target working mode. Among them, the first way is: to use the working mode set by the indoor unit corresponding to the maximum capacity in the capacity information as the target working mode. For example, the proportional relationship between the indoor unit capacity set in the cooling mode, the indoor unit capacity A set in the windless mode and the indoor unit capacity B set in the windless mode is calculated. If B / A ≥ 1 (it can also be taken in the range of 0.8 to 1.5), it means that the indoor unit capacity A is larger. From the user experience perspective, the demand for the windless mode is higher, so the windless mode is determined to be the target working mode. In addition, the threshold of the proportional relationship can be adjusted according to demand, for example, 1 can be adjusted to any number in the range of 0.8 to 1.5. This is mainly based on the judgment of the working mode preferred by the user.

[0102] The second method is: obtain the capacity information C of the outdoor unit of the multi-split air conditioner; determine the ratio between the capacity information corresponding to each working mode and the capacity information of the outdoor unit; determine the target working mode according to the ratio. By calculating the values ​​of B / C and A / C, the ratio of the capacity required for each working mode to the total capacity is determined, and the target working mode is determined according to the ratio. For example, considering that the demand for windless cooling is small, the operating frequency of the outdoor unit is required to be small, and only when the windless feeling occupies the main demand, the frequency of the outdoor unit needs to be strictly controlled. Therefore, if the ratio B / C between the capacity B of the indoor unit and the capacity information C of the outdoor unit in the windless mode is greater than 50%, the windless mode is determined to be the target working mode.

[0103] In the third embodiment, the control parameters of the indoor unit are adjusted according to the control parameters of the outdoor unit, so as to more accurately determine the control parameters of the indoor unit, make the operation state of the indoor unit more reasonable, better meet user needs, and improve user experience.

[0104] In addition, an embodiment of the present invention further proposes a storage medium, on which a multi-split air conditioner control program is stored. When the multi-split air conditioner control program is executed by a processor, the steps of the multi-split air conditioner control method described above are implemented.

[0105] Since the storage medium adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0106] In addition, refer to Figure 5 , Figure 5 This is a structural block diagram of a first embodiment of a multi-split air conditioner control device of the present invention. The embodiment of the present invention further provides a multi-split air conditioner control device.

[0107] In this embodiment, the multi-split air conditioner control device includes:

[0108] The acquisition module 10 is used to obtain the capacity information of the indoor unit corresponding to each working mode when it is detected that the indoor unit of the multi-split air conditioner is set to multiple working modes.

[0109] A multi-split air conditioner includes an outdoor unit and multiple indoor units. The refrigerants in each indoor unit are combined and heat exchanged in an outdoor unit. Each indoor unit can be controlled independently, that is, each indoor unit can be set to a different working mode; the working modes mainly include windless mode, cooling mode or heating mode. The indoor units of a multi-split air conditioner are set to multiple working modes, which means that at least two indoor units have different working modes, such as at least one indoor unit is set to cooling mode and at least one indoor unit is set to windless mode.

[0110] Different working modes have different requirements for the evaporation temperature of the outdoor unit. For example, in the windless mode, the outdoor unit needs to provide a suitable temperature and comfortable wind feeling while avoiding the risk of condensation, so a higher evaporation temperature is required in the control. In the cooling mode, a comfortable temperature and faster cooling are desired, so the outdoor unit needs to provide a lower evaporation temperature in the control.

[0111] The capacity information can be the cooling capacity of the air conditioner. Each indoor unit is classified according to the set working mode, and the sum of the cooling capacity of each indoor unit in each working mode is calculated. For example, indoor units 1, 2, and 3 are set to cooling mode, and indoor units 4 and 5 are set to windless mode; the acquired capacity information includes the sum A of the cooling capacity of indoor units 1, 2, and 3 in cooling mode, and the sum B of the cooling capacity of indoor units 4 and 5 in windless mode. When the multi-split air conditioner is running, each indoor unit can detect its own operating parameters in real time or at a fixed time, and then feed the parameters back to the outdoor unit. The outdoor unit determines the capacity information of each indoor unit based on the received parameters.

[0112] The analysis module 20 is used to determine a target working mode from multiple working modes according to the capacity information.

[0113] Although the indoor unit is set to multiple working modes, the outdoor unit can only be in one operating state. Therefore, in order to ensure the user experience, it is necessary to ensure that some indoor units can operate according to the original requirements, while also avoiding large fluctuations in other indoor units and not deviating from the original requirements. These indoor units are the indoor units corresponding to the target working mode with the highest priority.

[0114] In this embodiment, the priority of each working mode is determined based on the capacity information; for example, the working mode with the highest cooling capacity is used as the target working mode; or, considering the user's preference for different working modes, the cooling capacity corresponding to each working mode is corrected according to a preset weight value, and then the working mode with the highest cooling capacity is used as the target working mode; of course, the selection method of the target working mode can be set according to user needs, and this embodiment does not limit this.

[0115] Since user needs may change at any time, the target working mode may also change. For example, assuming that the cooling capacity of the indoor units 1, 2, 3, 4, and 5 is the same, when all are turned on, the target working mode is the cooling mode; if the user turns off indoor units 1 and 2, the target working mode is the windless mode. The target working mode can be judged at regular intervals to respond to user operations in a timely manner.

[0116] The driving module 30 is used to determine a first control parameter of an outdoor unit of the multi-split air conditioner based on a target working mode, and drive the outdoor unit according to the first control parameter.

[0117] In cooling mode, the outdoor unit needs to release heat to the input high-temperature and high-pressure refrigerant and output low-temperature and low-pressure refrigerant to the indoor unit. Therefore, the first control parameter can be the evaporation temperature of the outdoor unit or the operating frequency of the compressor.

[0118] The driving module 30 is pre-set with a calculation method for the first control parameter in different working modes. After the target working mode is established, the first control parameter is determined based on the calculation method corresponding to the target working mode. The calculation method of the first control parameter can be set according to user experience, and this embodiment does not limit this. If the indoor unit of the multi-split air conditioner is set to only one working mode, the driving module 30 can directly determine the corresponding control parameter according to the preset calculation method.

[0119] After determining the first control parameter, if the first control parameter is the evaporation temperature, the external unit is controlled and the compressor power is controlled according to the evaporation temperature of the external unit; or, if the first control parameter is the compressor frequency, the compressor power is made to reach the frequency in the first control parameter.

[0120] In this embodiment, when the indoor unit of the multi-split air conditioner operates in different working modes, the working mode with the highest priority is determined from each working mode according to the capacity of the indoor unit, and the control parameters of the outdoor unit are calculated based on the determined working mode with the highest priority, so that the outdoor unit gives priority to guaranteeing the needs of the indoor unit operating in the working mode with the highest priority. This implementation method detects the operating state of the multi-split air conditioner in real time, thereby adjusting the operating state of the outdoor unit in real time, ensuring that user needs can be met and improving user experience.

[0121] Other embodiments or specific implementations of the multi-split air conditioning control device of the present invention can refer to the above-mentioned method embodiments and will not be described in detail here.

[0122] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0123] The serial numbers of the embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. In a unit claim that lists several means, several of these means may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order and these words may be interpreted as names.

[0124] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory image (ROM) / random access memory (RAM), a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0125] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-split air conditioner control method, characterized in that: The multi-split air conditioner control method comprises the following steps: When it is detected that the indoor units of the multi-split air conditioner are set to multiple working modes, the capacity information of the indoor units corresponding to each working mode is obtained, wherein the indoor units of the multi-split air conditioner are set to multiple working modes, which means that at least one indoor unit is set to a cooling mode and at least one indoor unit is set to a windless mode, and the capacity information is the cooling capacity of the air conditioner; determining a target operating mode from the plurality of operating modes according to the capacity information; and, Determine a first control parameter of an outdoor unit of the multi-split air conditioner based on the target operating mode, and drive the outdoor unit according to the first control parameter; The method of determining a first control parameter of an outdoor unit of the multi-split air conditioner based on the target working mode, and driving the outdoor unit according to the first control parameter, comprises: When the target working mode is a windless mode, obtaining environmental parameters of the environment in which each indoor unit is located; When the environmental parameters meet the cooling conditions, determining the minimum cooling temperature corresponding to the indoor units of the multi-split air conditioner, wherein the minimum cooling temperature is the minimum value of the set cooling temperatures of the indoor units; and Determining a first control parameter of the outdoor unit according to the minimum refrigeration temperature, and driving the outdoor unit according to the first control parameter; After obtaining the environmental parameters of the environment in which each indoor unit is located, the method further includes: When the environmental parameter does not meet the cooling condition, determining the humidity value of the environment in which the indoor unit is located in the windless mode according to the environmental parameter; and A first control parameter of the outdoor unit is determined according to the humidity value, and the outdoor unit is driven according to the first control parameter.

2. The multi-split air conditioner control method according to claim 1, characterized in that: The method of determining a first control parameter of an outdoor unit of the multi-split air conditioner based on the target working mode, and driving the outdoor unit according to the first control parameter, comprises: When the target working mode is a cooling mode, determining the minimum cooling temperature corresponding to the indoor unit of the multi-split air conditioner; and, A first control parameter of the outdoor unit is determined according to the minimum refrigeration temperature, and the outdoor unit is driven according to the first control parameter.

3. The multi-split air conditioner control method according to claim 1 or 2, characterized in that: After driving the external machine according to the first control parameter, the method includes: Get the current control parameters of each indoor unit in the windless mode; Determining a second control parameter according to the first control parameter and the current control parameter; and, The indoor units set to the no-wind mode are driven according to the second control parameter.

4. The multi-split air conditioner control method according to claim 1 or 2, characterized in that: Determining a target operating mode from the multiple operating modes according to the capacity information includes: The working mode set for the indoor unit corresponding to the maximum capacity in the capacity information is used as the target working mode.

5. The multi-split air conditioner control method according to claim 1 or 2, characterized in that: Determining a target operating mode from the multiple operating modes according to the capacity information includes: Obtaining capacity information of the outdoor unit of the multi-split air conditioner; Determine a ratio between the capacity information corresponding to each working mode and the capacity information of the external unit; and, A target operating mode is determined according to the ratio value.

6. A multi-connected air conditioner control device, characterized in that: The multi-connected air conditioner control device comprises: A collection module, for obtaining capacity information of the indoor units corresponding to each working mode when it is detected that the indoor units of the multi-split air conditioner are set to multiple working modes, wherein the indoor units of the multi-split air conditioner are set to multiple working modes, which means that at least one indoor unit is set to a cooling mode and at least one indoor unit is set to a windless mode, and the capacity information is the cooling capacity of the air conditioner; an analyzing module, configured to determine a target operating mode from the plurality of operating modes according to the capacity information; and A driving module, configured to determine a first control parameter of an outdoor unit of the multi-split air conditioner based on the target working mode, and drive the outdoor unit according to the first control parameter; The driving module is further used to obtain environmental parameters of the environment in which each indoor unit is located when the target working mode is the windless mode; when the environmental parameters meet the cooling conditions, determine the minimum cooling temperature corresponding to the indoor unit of the multi-split air conditioner, and the minimum cooling temperature is the minimum value of the set cooling temperatures of each indoor unit; and determine the first control parameter of the outdoor unit according to the minimum cooling temperature, and drive the outdoor unit according to the first control parameter; The driving module is also used to determine the humidity value of the environment in which the indoor unit is located in the windless mode according to the environmental parameters when the environmental parameters do not meet the cooling conditions; and to determine the first control parameter of the outdoor unit according to the humidity value, and drive the outdoor unit according to the first control parameter.

7. A multi-split air conditioning control device, characterized in that: The multi-split air-conditioning control device includes: a memory, a processor, and a multi-split air-conditioning control program stored in the memory and executable on the processor. When the multi-split air-conditioning control program is executed by the processor, the multi-split air-conditioning control method as described in any one of claims 1 to 5 is implemented.

8. A storage medium, characterized in that: The storage medium stores a multi-split air conditioner control program, and when the multi-split air conditioner control program is executed by the processor, the multi-split air conditioner control method according to any one of claims 1 to 5 is implemented.

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