Method and device for controlling multi-split air conditioner, air conditioner and storage medium

Abstract

The invention relates to the technical field of intelligent air conditioners, and discloses a method and device for controlling a multi-split air conditioner, the air conditioner and a storage medium. The method comprises the steps that according to the current indoor temperature and humidity corresponding to each first indoor unit in a refrigeration operation state, the refrigeration load corresponding to each first indoor unit is determined, and the total refrigeration load is obtained; according to the current indoor temperature corresponding to each second indoor unit in the heating operation state and the outdoor humidity correction value, the heating load corresponding to each second indoor unit is determined, and the total heating load is obtained; and according to the total refrigeration load and the total heating load, the cold and hot load rate is obtained, and an outdoor unit of the air conditioner is controlled to operate according to the cold and hot load rate. In this way, the intelligence and the self-adaptability of the multi-split air conditioner are improved, and the user experience is also improved.

Description

Technical Field

[0001] The present application relates to the field of intelligent air conditioning technology, for example, to a method, device, air conditioner and storage medium for controlling a multi-split air conditioner. Background Art

[0002] Multi-split air conditioners are commonly known as "one to many". Multi-split air conditioners are one outdoor unit connected to multiple indoor units. Each indoor unit can be freely started / stopped, or grouped or centrally controlled. In the hot and cold seasons, the operation mode of the indoor units in multi-split air conditioners is prone to mixed modes. For example, one indoor unit is running in cooling mode, while the other two indoor units are running in heating mode. Since the indoor units are all connected to the outdoor units, conflicts arise and the outdoor units can only operate in one mode.

[0003] At present, the first-in-first-out method can be used to control the operation of the outdoor unit, that is, the operation mode of the outdoor unit is locked according to the order in which the indoor units are turned on. For example, the indoor unit that is turned on the least is in cooling mode, and the outdoor unit is operated in cooling mode regardless of whether the indoor unit turned on later is in heating mode or cooling mode. Alternatively, the priority is set in advance and the operation of the outdoor unit is controlled according to the set priority. These control methods are relatively simple, but they do not take into account the control needs of most users and cannot automatically adapt to actual usage scenarios. The operation mode of one indoor unit may limit the control needs of all other users. Therefore, the intelligence and adaptability of multi-split air conditioners need to be improved.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0006] The embodiments of the present disclosure provide a method, a device, an air conditioner and a storage medium for controlling a multi-split air conditioner to solve the technical problem that the intelligence of the multi-split air conditioner needs to be improved.

[0007] In some embodiments, the method comprises:

[0008] Determine the cooling load corresponding to each first indoor unit according to the current indoor temperature and humidity corresponding to each first indoor unit in the cooling operation state, and obtain the total cooling load;

[0009] According to the current indoor temperature corresponding to each second indoor unit in the heating operation state and the outdoor humidity correction value, the heating load corresponding to each second indoor unit is determined, and the total heating load is obtained;

[0010] According to the total cooling load and the total heating load, the cooling and heating load ratio is obtained, and the operation of the outdoor unit of the air conditioner is controlled according to the cooling and heating load ratio.

[0011] In some embodiments, the apparatus comprises:

[0012] A cooling load determination module is configured to determine the cooling load corresponding to each first indoor unit according to the current indoor temperature and humidity corresponding to each first indoor unit in a cooling operation state, and obtain a total cooling load;

[0013] A heating load determination module is configured to determine the heating load corresponding to each second indoor unit according to the current indoor temperature corresponding to each second indoor unit in the heating operation state and the outdoor humidity correction value, and obtain the total heating load;

[0014] The control module is configured to obtain a cooling and heating load rate according to the total cooling load and the total heating load, and control the operation of the outdoor unit of the air conditioner according to the cooling and heating load rate.

[0015] In some embodiments, the device for controlling a multi-split air conditioner includes a processor and a memory storing program instructions, and the processor is configured to execute the above-mentioned method for controlling a multi-split air conditioner when executing the program instructions.

[0016] In some embodiments, the multi-split air conditioner includes an air conditioner body; the above-mentioned device for controlling the multi-split air conditioner is installed on the air conditioner body.

[0017] In some embodiments, the storage medium stores program instructions, and when the program instructions are run, they execute the above-mentioned method for controlling multi-split air conditioners.

[0018] The method, device and air conditioner for controlling a multi-split air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0019] When the operating modes of the indoor units in a multi-split air conditioner are not exactly the same, the corresponding cooling load can be determined according to the indoor temperature and humidity corresponding to the operation of the indoor unit in cooling mode, and the total cooling load can be obtained. The corresponding heating load can be determined according to the indoor and outdoor temperatures corresponding to the operation of the indoor unit in heating mode, and the humidity factor affected by the outdoor temperature, and the total heating load can be obtained. Then, the cooling and heating load rates can be obtained based on the total cooling load and the total heating load, and the operation of the outdoor unit of the air conditioner can be controlled based on the cooling and heating load rates. In this way, the operating mode of the outdoor unit of the air conditioner is determined by comprehensively considering the cooling load and the heating load, and it is automatically adapted to the actual application scenarios, thereby improving the intelligence and adaptability of the multi-split air conditioner and also improving the user experience.

[0020] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0022] Figure 1 is a structural schematic diagram of a multi-split air conditioner provided by an embodiment of the present disclosure;

[0023] Figure 2 It is a flowchart of a multi-split air conditioner control method provided by an embodiment of the present disclosure;

[0024] Figure 3 It is a flowchart of a multi-split air conditioner control method provided by an embodiment of the present disclosure;

[0025] Figure 4 is a structural schematic diagram of a multi-split air conditioner control device provided by an embodiment of the present disclosure;

[0026] Figure 5 is a structural schematic diagram of a multi-split air conditioner control device provided by an embodiment of the present disclosure;

[0027] Figure 6 is a structural schematic diagram of a multi-split air conditioner control device provided by an embodiment of the present disclosure;

[0028] Figure 7 It is a schematic diagram of an air conditioner provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0030] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0031] Unless otherwise stated, the term "plurality" means two or more.

[0032] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0033] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0034] In the disclosed embodiment, when the operation modes of the indoor units in the multi-split air conditioner are not completely the same, the corresponding cooling load can be determined according to the indoor temperature and humidity corresponding to the operation of the indoor unit in the cooling mode, and the total cooling load can be obtained. The corresponding heating load can be determined according to the indoor and outdoor temperatures corresponding to the operation of the indoor unit in the heating mode, and the humidity factor affected by the outdoor temperature, and the total heating load can be obtained. Then, the cooling and heating load rate can be obtained according to the total cooling load and the total heating load, and the operation of the outdoor unit of the air conditioner can be controlled according to the cooling and heating load rate. In this way, the operation mode of the outdoor unit of the air conditioner is determined by combining the cooling load and the heating load, and the actual application scenario is automatically applied, thereby improving the intelligence and adaptability of the multi-split air conditioner. In addition, when determining different loads, corresponding to the influence of different indoor humidity or outdoor humidity, the user's body feeling and the characteristics of the air conditioner are fully considered, and the load can be determined more accurately, and then accurate control can be performed, further improving the performance and intelligence of the air conditioner.

[0035] Figure 1 Schematic diagram of a multi-split air conditioner provided by an embodiment of the present disclosure. Figure 1As shown, a multi-split air conditioner includes an outdoor unit and multiple indoor units. Each indoor unit is connected to the outdoor unit. In this way, in some scenarios, such as the alternating seasons of cold and hot, some indoor units may operate in cooling mode, while others may operate in heating mode. For example: Figure 1 In the embodiment, indoor unit 1 operates in heating mode, while indoor units 2 and 3 operate in cooling mode. Since the indoor units are connected to the outdoor units, in order to reduce operation conflicts, in the embodiment of the present disclosure, the operation mode corresponding to the outdoor unit can be determined and the operation can be controlled according to the total cooling load and total heating load corresponding to the indoor units.

[0036] Figure 2 FIG. 1 is a flow chart of a multi-split air conditioner control method provided by an embodiment of the present disclosure. Figure 2 As shown in FIG. 1 , the control process of the multi-split air conditioner includes:

[0037] Step 201: According to the current indoor temperature and humidity corresponding to each first indoor unit in a cooling operation state, the cooling load corresponding to each first indoor unit is determined, and the total cooling load is obtained.

[0038] Step 202: According to the current indoor temperature corresponding to each second indoor unit in the heating operation state and the outdoor humidity correction value, the heating load corresponding to each second indoor unit is determined, and the total heating load is obtained.

[0039] Step 203: According to the total cooling load and the total heating load, a cooling and heating load ratio is obtained, and the operation of the outdoor unit of the air conditioner is controlled according to the cooling and heating load ratio.

[0040] The multi-split air conditioner includes: an outdoor unit and multiple indoor units, each of which is connected to the outdoor unit. In the application scenario of the embodiment of the present disclosure, some indoor units are in a cooling operation state, and some indoor units are in a heating state, and the current operation mode of the outdoor unit may be a cooling mode or a heating mode. Therefore, the cooling load corresponding to each first indoor unit in the cooling operation state can be obtained, and the total cooling load can be obtained, and the heating load corresponding to each second indoor unit in the heating operation can be obtained, and the total heating load can be obtained, so that the optimal operation mode of the outdoor unit can be intelligently identified based on the total cooling load and the total heating load.

[0041] There are many ways for the air conditioner to determine the cooling load corresponding to each first indoor unit. For example, any first indoor unit is determined as the first current indoor unit, and the current indoor temperature Tai and current power IUHP corresponding to the first current indoor unit can be obtained, so that (Tai-Tset)*IUHP can be determined as the corresponding cooling load CoolLoad. Tset is the set target temperature.

[0042] However, when the air-conditioning indoor unit is operating in the cooling state, the user is more sensitive to the indoor humidity. For example, in summer, the temperature is the same, but the higher the humidity, the more uncomfortable the user will be. Therefore, in some embodiments, determining the cooling load corresponding to each first indoor unit includes: obtaining the current indoor temperature Tai, the current indoor humidity Hum, and the current power IUHP corresponding to the first current indoor unit, and then determining the current cooling load of the first current indoor unit according to the current indoor temperature Tai, the current indoor humidity Hum, and the current power IUHP. Among them, the current cooling load CoolLoad=((Tai-Tset)*x+(Hum-HumSet)*y)*IUHP. x is the first weight corresponding to the temperature, y is the second weight corresponding to the humidity, and x+y=1.

[0043] It can be seen that the cooling load of the indoor unit in the cooling operation state can be determined according to the indoor temperature and humidity, which improves the accuracy of determining the cooling load. In addition, when the air conditioner indoor unit is in the cooling operation state, the outdoor temperature will also affect the cooling load corresponding to the indoor unit. The higher the outdoor temperature, the greater the cooling load of the same indoor unit at the same set target temperature. Therefore, when determining the cooling load, the influence of the outdoor temperature on the cooling load, that is, the cooling load correction value, can also be considered. In some embodiments, determining the cooling load corresponding to each first indoor unit includes: obtaining the current indoor temperature Tai, the current indoor humidity Hum, and the current power IUHP corresponding to the first current indoor unit, and determining the current cooling load correction value CoolOutRate corresponding to the current outdoor temperature Tao; according to the current indoor temperature Tai, the current indoor humidity Hum, the current power IUHP, and the current cooling load correction value CoolOutRate, the current cooling load of the first current indoor unit is determined by formula (1).

[0044] CoolLoad=[((Tai-Tset)*x+(Hum-HumSet)*y)*IUHP]*CoolOutRate (1)

[0045] Wherein, CoolLoad is the cooling load, Tset is the set target temperature, x is the first weight corresponding to the temperature, y is the second weight corresponding to the humidity, and x+y=1, and the value range of CoolOutRate is [0,1].

[0046] Since the current cooling load correction value CoolOutRate corresponds to the current outdoor temperature Tao, in some embodiments, determining the current cooling load correction value CoolOutRate corresponding to the current outdoor temperature Tao includes: determining the current cooling load correction value CoolOutRate corresponding to the current outdoor temperature Tao according to the correspondence between the stored outdoor temperature range and the cooling load correction value. Alternatively, in some embodiments, determining the current cooling load correction value CoolOutRate corresponding to the current outdoor temperature Tao includes: generating a cooling load slope according to a set minimum outdoor temperature, a set maximum outdoor temperature, and the corresponding cooling value range endpoint values, and obtaining the current cooling load correction value CoolOutRate according to the cooling load slope and the current outdoor temperature Tao.

[0047] After obtaining the cooling load corresponding to each first indoor unit, each cooling load can be added together to obtain the corresponding total cooling load, that is, the total cooling load CoolLoadtotal=∑CoolLoad.

[0048] During operation, the multi-split air conditioner needs to obtain not only the total cooling load, but also the total heating load corresponding to the second indoor unit in the heating state. Similarly, there are multiple ways for the air conditioner to determine the heating load corresponding to each second indoor unit. In some embodiments, the current indoor temperature Tai and the current power IUHP corresponding to the second current indoor unit can be obtained, so that (Tai-Tset)*IUHP can be determined as the corresponding heating load HeadLoad. Tset is the set target temperature.

[0049] When the indoor unit of the air conditioner is in the heating operation state, the indoor humidity may not be considered, but the outdoor humidity must be considered, that is, the outdoor unit of the air conditioner is sensitive to the outdoor humidity and is prone to frost. Therefore, when determining the heating load, the outdoor humidity must be considered, and the outdoor humidity is determined according to the outdoor temperature. In addition, the outdoor temperature will also affect the heating load corresponding to the indoor unit. The lower the outdoor temperature, the greater the heating load of the same indoor unit at the same set target temperature. Therefore, in some embodiments, determining the heating load corresponding to each second indoor unit includes: obtaining the current indoor temperature Tai and the current power IUHP corresponding to the second current indoor unit, and determining the current outdoor humidity correction value OutHumRate and the current heating load correction value HeatOutRate corresponding to the current outdoor temperature Tao; according to the current indoor temperature Tai, the current power IUHP, the current heating load correction value HeatOutRate and the current outdoor humidity correction value OutHumRate, the current heating load is determined by formula (2).

[0050] HeadLoad = [(Tset-Tai)*IUHP]*HeatOutRate*OutHumRate (2)

[0051] Among them, HeadLoad is the heating load, Tset is the set target temperature, and the value range of HeatOutRate is [0,1].

[0052] Moreover, in some embodiments, determining the current outdoor humidity correction value OutHumRate and the current heating load correction value HeatOutRate corresponding to the current outdoor temperature Tao includes: determining the current outdoor humidity correction value OutHumRate and the current heating load correction value HeatOutRate corresponding to the current outdoor temperature Tao according to the correspondence between the saved outdoor temperature range and the heating load correction value and the outdoor humidity correction value.

[0053] Alternatively, in some embodiments, determining the current heating load correction value HeatOutRate corresponding to the current outdoor temperature Tao includes: generating a heating load slope according to a set minimum outdoor temperature, a set maximum outdoor temperature, and the corresponding endpoint values ​​of the heating value range, and obtaining the current heating load correction value HeatOutRate according to the heating load slope and the current outdoor temperature Tao.

[0054] Table 1 is a corresponding relationship between outdoor temperature and load correction value provided by this embodiment.

[0055] Tao >30℃ (25,30] (20,25] (15,20] (10,15] (5,10] ≤5 CoolOutRate 1 0.8 0.5 0.4 0.3 0.2 0 HeatOutRate 0 0.2 0.5 0.6 0.7 0.8 1

[0056] Table 1

[0057] For example, if the current outdoor temperature is 18°C, according to Table 1, it can be determined that the current cooling load correction value CoolOutRate can be 0.4, and the current heating load correction value HeatOutRate can be 0.6. According to Table 2, it can be determined that the current outdoor humidity correction value OutHumRate can be 1.

[0058] Of course, after obtaining the heating load corresponding to each second indoor unit, each heating load can be added together to obtain the corresponding total heating load, that is, the total heating load HeadLoadtotal=∑HeadLoad.

[0059] Table 2 is a corresponding relationship between outdoor temperature and outdoor humidity correction value provided by this embodiment.

[0060]

[0061] Table 2

[0062] After the total cooling load and the total heating load are obtained, the corresponding operation mode of the outdoor unit can be determined and the corresponding control can be performed, that is, the cooling and heating load rate is obtained according to the total cooling load and the total heating load, and the operation of the outdoor unit of the air conditioner is controlled according to the cooling and heating load rate. In some embodiments, obtaining the cooling and heating load rate includes: adding the total cooling load and the total heating load to obtain the total load; determining the ratio between the total cooling load and the total load as the first load rate, or determining the ratio between the total heating load and the total load as the second load rate.

[0063] For example, the first load rate coolRate = CoolLoad total / (CoolLoad total+HeadLoad total). Or, the second load rate HeadRate = HeadLoad total / (CoolLoad total+HeadLoad total).

[0064] In this way, controlling the operation of the outdoor unit of the air conditioner according to the first load rate includes: when the first load rate is less than the first set threshold, controlling the outdoor unit of the air conditioner to operate in heating mode; when the first load is greater than the second set threshold, controlling the outdoor unit of the air conditioner to operate in cooling mode; when the first load is greater than or equal to the first set threshold, and less than or equal to the second set threshold, controlling the outdoor unit of the air conditioner to maintain the current mode of operation.

[0065] Among them, the first set threshold can be 35%, 40%, or 45%; and the second set threshold can be 55%, 60%, or 65%, etc., which can be determined according to the performance of the multi-split air conditioner, the usage scenario, etc.

[0066] For example: when coolRate<35%, the outdoor unit can be controlled to operate in heating mode, and when coolRate>65%, the outdoor unit can be controlled to operate in cooling mode. When 35%≤coolRate≤65%, the operation mode of the outdoor unit can be controlled to remain unchanged, that is, the outdoor unit of the air conditioner is controlled to maintain the current mode.

[0067] Of course, in some embodiments, the outdoor unit of the air conditioner can be controlled to operate according to the second load rate, including: when the second load rate is less than the third set threshold, the outdoor unit of the air conditioner is controlled to operate in cooling mode; when the second load is greater than the fourth set threshold, the outdoor unit of the air conditioner is controlled to operate in heating mode; when the second load is greater than or equal to the third set threshold, and less than or equal to the fourth set threshold, the outdoor unit of the air conditioner is controlled to maintain the current mode of operation. Similarly, the third set threshold and the fourth set threshold can be determined according to the performance of the multi-split air conditioner, the usage scenario, etc., and will not be elaborated in detail.

[0068] It can be seen that in this embodiment, the multi-split air conditioner obtains the total cooling load of the indoor unit running in the cooling mode and the total heating load of the indoor unit running in the heating mode. Then, the cooling and heating load rate can be obtained according to the total cooling load and the total heating load, and the operation of the outdoor unit of the air conditioner can be controlled according to the cooling and heating load rate. In this way, the operation mode of the outdoor unit of the air conditioner is determined by combining the cooling load and the heating load, and the actual application scenario is automatically adapted, thereby improving the intelligence and adaptability of the multi-split air conditioner. In addition, when determining different loads, corresponding to the influence of different indoor humidity or outdoor humidity, the user's body feeling and the characteristics of the air conditioner are fully considered, and the load can be determined more accurately, thereby performing accurate control, further improving the performance and intelligence of the air conditioner.

[0069] The operation flow is collected into a specific embodiment below to illustrate the multi-split air conditioner control process provided by the embodiment of the present invention.

[0070] In one embodiment of the present disclosure, a multi-split air conditioner includes: an outdoor unit and a plurality of indoor units. Each indoor unit is connected to an outdoor unit. In addition, the air conditioner stores a corresponding relationship as shown in Table 1 and Table 2. In addition, the first set threshold is 40%, and the second set threshold is 60%.

[0071] Figure 3 FIG. 1 is a flow chart of a multi-split air conditioner control method provided by an embodiment of the present disclosure. Figure 3 As shown in FIG. 1 , the multi-split air conditioning control process includes:

[0072] Step 301: The air conditioner obtains the current outdoor temperature Tao.

[0073] Step 302: The air conditioner determines a first indoor unit in a cooling operation state as the first current indoor unit, obtains the current indoor temperature Tai, the current indoor humidity Hum, and the current power IUHP in the operating area of ​​the first current indoor unit, and determines the current cooling load correction value CoolOutRate corresponding to the current outdoor temperature Tao according to Table 1.

[0074] Step 303: The air conditioner determines the current cooling load CoolLoad of the first current indoor unit according to the current indoor temperature Tai, the current indoor humidity Hum, the current power IUHP, and the current cooling load correction value CoolOutRate through formula (1).

[0075] CoolLoad=[((Tai-Tset)*x+(Hum-HumSet)*y)*IUHP]*CoolOutRate (1)

[0076] Wherein, CoolLoad is the cooling load, Tset is the set target temperature, x is the first weight corresponding to the temperature, y is the second weight corresponding to the humidity, and x+y=1, here, x=0.7, y=0.3.

[0077] Step 304: Determine whether all first indoor units have been polled. If yes, execute step 305; otherwise, return to step 302.

[0078] Step 305: The air conditioner adds up each cooling load to obtain a corresponding total cooling load.

[0079] Total cooling load CoolLoadtotal=∑CoolLoad.

[0080] Step 306: The air conditioner determines a second indoor unit in a heating operation state as the second current indoor unit, obtains the current indoor temperature Tai and the current power IUHP in the action area of ​​the second current indoor unit, and determines the current heating load correction value HeadOutRate corresponding to the current outdoor temperature Tao according to Table 1, and determines the current outdoor humidity correction value OutHumRate corresponding to the current outdoor temperature Tao according to Table 2.

[0081] Step 307: The air conditioner determines the current heating load according to the current indoor temperature Tai, the current power IUHP, the current heating load correction value HeatOutRate and the current outdoor humidity correction value OutHumRate by using formula (2).

[0082] HeadLoad = [(Tset-Tai)*IUHP]*HeatOutRate*OutHumRate (2)

[0083] Among them, HeadLoad is the heating load and Tset is the set target temperature.

[0084] Step 308: Determine whether all second indoor units have been polled. If yes, execute step 309; otherwise, return to step 306.

[0085] Step 309: The air conditioner adds up each heating load to obtain the corresponding total heating load.

[0086] Total heating load HeadLoadtotal=∑HeadLoad.

[0087] There is no requirement for the order of steps 302-305 and steps 306-309, and they can be performed serially or in parallel.

[0088] Step 310: The air conditioner adds the total cooling load and the total heating load to obtain the total load, and determines the ratio between the total cooling load and the total load as the first load rate coolRate.

[0089] The first load rate coolRate=CoolLoadtotal / (CoolLoadtotal+HeadLoadtotal).

[0090] Step 311: Determine whether coolRate<40% is true. If so, execute step 312; otherwise, execute step 313.

[0091] Step 312: The air conditioner controls the outdoor unit to operate in heating mode.

[0092] Step 313: Determine whether coolRate>60% is true. If so, execute step 314; otherwise, execute step 315.

[0093] Step 314: The air conditioner controls the outdoor unit to operate in cooling mode.

[0094] Step 315: The air conditioner controls the outdoor unit to maintain the current mode for operation.

[0095] It can be seen that in this embodiment, the multi-split air conditioner integrates indoor and outdoor temperatures, indoor and outdoor humidity, etc. to obtain the total cooling load of the indoor unit running in the cooling mode and the total heating load of the indoor unit running in the heating mode. Then, the cooling and heating load rate can be obtained according to the total cooling load and the total heating load, and the operation of the outdoor unit of the air conditioner can be controlled according to the cooling and heating load rate. In this way, the operation mode of the outdoor unit of the air conditioner is determined by integrating the cooling load and the heating load, and the actual application scenario is automatically adapted, thereby improving the intelligence and adaptability of the multi-split air conditioner. In addition, when determining different loads, corresponding to the influence of different indoor humidity or outdoor humidity, the user's body feeling and the characteristics of the air conditioner are fully considered, and the load can be determined more accurately, thereby performing accurate control, further improving the performance and intelligence of the air conditioner.

[0096] According to the above process for controlling a multi-split air conditioner, a device for controlling a multi-split air conditioner can be constructed.

[0097] Figure 4 Schematic diagram of a multi-split air conditioner control device provided by the embodiment of the present disclosure. Figure 4 As shown, the multi-split air conditioner control device 400 includes: a cooling load determination module 410 , a heating load determination module 420 and a control module 430 .

[0098] The cooling load determination module 410 is configured to determine the cooling load corresponding to each first indoor unit according to the current indoor temperature and humidity corresponding to each first indoor unit in the cooling operation state, and obtain the total cooling load.

[0099] The heating load determination module 420 is configured to determine the heating load corresponding to each second indoor unit according to the current indoor temperature corresponding to each second indoor unit in the heating operation state and the outdoor humidity correction value, and obtain the total heating load.

[0100] The control module 430 is configured to obtain a cooling and heating load ratio according to the total cooling load and the total heating load, and control the operation of the outdoor unit of the air conditioner according to the cooling and heating load ratio.

[0101] In some embodiments, the cooling load determination module 410 includes:

[0102] The first acquisition and determination unit is configured to acquire the current indoor temperature Tai, the current indoor humidity Hum, and the current power IUHP corresponding to the first current indoor unit, and determine the current cooling load correction value CoolOutRate corresponding to the current outdoor temperature Tao.

[0103] The first load determination unit is configured to determine the current cooling load of the first current indoor unit according to the current indoor temperature Tai, the current indoor humidity Hum, the current power IUHP, and the current cooling load correction value CoolOutRate through formula (1).

[0104] CoolLoad=[((Tai-Tset)*x+(Hum-HumSet)*y)*IUHP]*CoolOutRate (1)

[0105] Wherein, CoolLoad is the cooling load, Tset is the set target temperature, x is the first weight corresponding to the temperature, y is the second weight corresponding to the humidity, and x+y=1, and the value range of CoolOutRate is [0,1].

[0106] In some embodiments, the first acquisition and determination unit is specifically configured to determine the current cooling load correction value CoolOutRate corresponding to the current outdoor temperature Tao based on the correspondence between the saved outdoor temperature range and the cooling load correction value; or, generate a cooling load slope based on the set minimum outdoor temperature, the set maximum outdoor temperature, and the corresponding endpoint values ​​of the cooling value range, and obtain the current cooling load correction value CoolOutRate based on the cooling load slope and the current outdoor temperature Tao.

[0107] In some embodiments, the heating load determination module 420 includes:

[0108] The second obtaining and determining unit is configured to obtain the current indoor temperature Tai and the current power IUHP corresponding to the second current indoor unit, and determine the current outdoor humidity correction value OutHumRate and the current heating load correction value HeatOutRate corresponding to the current outdoor temperature Tao.

[0109] The second load determination unit is configured to determine the current heating load according to the current indoor temperature Tai, the current power IUHP, the current heating load correction value and the current outdoor humidity correction value OutHumRate through formula (2).

[0110] HeadLoad = [(Tset-Tai)*IUHP]*HeatOutRate*OutHumRate (2)

[0111] Among them, HeadLoad is the heating load, Tset is the set target temperature, and the value range of HeatOutRate is [0,1].

[0112] In some embodiments, the second acquisition and determination unit is specifically configured to determine the current outdoor humidity correction value OutHumRate and the current heating load correction value HeatOutRate corresponding to the current outdoor temperature Tao according to the correspondence between the stored outdoor temperature range and the heating load correction value and the outdoor humidity correction value; or, generate a heating load slope according to the set minimum outdoor temperature, the set maximum outdoor temperature, and the corresponding endpoint values ​​of the heating value range, and obtain the current heating load correction value HeatOutRate according to the heating load slope and the current outdoor temperature Tao.

[0113] In some embodiments, the control module 430 includes:

[0114] a load factor determination unit configured to add the total cooling load and the total heating load to obtain a total load;

[0115] The ratio of the total cooling load to the total load is determined as the first load rate, or the ratio of the total heating load to the total load is determined as the second load rate.

[0116] In some embodiments, the control module 430 includes:

[0117] The control unit is configured to control the outdoor unit of the air conditioner to operate in a heating mode when the first load rate is less than a first set threshold; to control the outdoor unit of the air conditioner to operate in a cooling mode when the first load is greater than a second set threshold; and to control the outdoor unit of the air conditioner to maintain the current mode of operation when the first load is greater than or equal to the first set threshold and less than or equal to the second set threshold.

[0118] The following further describes the multi-split air conditioner control process used in the multi-split air conditioner control device in conjunction with the embodiments.

[0119] In this embodiment, the multi-split air conditioner includes: one outdoor unit and multiple indoor units, and stores the corresponding relationships shown in Table 1 and Table 2. In addition, the first set threshold is 40%, and the second set threshold is 60%.

[0120] Figure 5 Schematic diagram of a multi-split air conditioner control device provided by the embodiment of the present disclosure. Figure 5 As shown, the multi-split air conditioner control device 400 includes: a cooling load determination module 410, a heating load determination module 420 and a control module 430, wherein the cooling load determination module 410 includes: a first acquisition determination unit 411 and a first load determination unit 412. The heating load determination module 420 includes: a second acquisition determination unit 421 and a second load determination unit 422. The control module 430 includes: a load rate determination unit 431 and a control unit 432.

[0121] In this embodiment, during the operation of the multi-split air conditioner, the current outdoor temperature Tao is obtained. In this way, after the first indoor unit in a cooling operation state is determined as the first current indoor unit, the first acquisition determination unit 411 in the cooling load determination module 410 can obtain the current indoor temperature Tai, the current indoor humidity Hum, and the current power IUHP in the action area of ​​the first current indoor unit, and determine the current cooling load correction value CoolOutRate corresponding to the current outdoor temperature Tao according to Table 1; thus, the first load determination unit 412 can determine the current cooling load CoolLoad of the first current indoor unit according to the current indoor temperature Tai, the current indoor humidity Hum, the current power IUHP, and the current cooling load correction value CoolOutRate through formula (1).

[0122] CoolLoad=[((Tai-Tset)*x+(Hum-HumSet)*y)*IUHP]*CoolOutRate (1)

[0123] Wherein, CoolLoad is the cooling load, Tset is the set target temperature, x is the first weight corresponding to the temperature, y is the second weight corresponding to the humidity, and x+y=1, here, x=0.7, y=0.3.

[0124] In this way, all the first indoor units have determined the first current indoor unit, that is, all the first indoor units have been polled, and the cooling load determination module 410 adds each cooling load to obtain the corresponding total cooling load. Total cooling load CoolLoadTotal=∑CoolLoad.

[0125] Furthermore, a second indoor unit in the heating operation state can be determined as the second current indoor unit, so that the second acquisition determination unit 421 in the heating load determination module 420 can obtain the current indoor temperature Tai and the current power IUHP in the action area of ​​the second current indoor unit, and determine the current heating load correction value HeadOutRate corresponding to the current outdoor temperature Tao according to Table 1, and determine the current outdoor humidity correction value OutHumRate corresponding to the current outdoor temperature Tao according to Table 2. Furthermore, the second load determination unit 422 determines the current heating load according to the current indoor temperature Tai, the current power IUHP, the current heating load correction value HeatOutRate and the current outdoor humidity correction value OutHumRate through formula (2).

[0126] HeadLoad = [(Tset-Tai)*IUHP]*HeatOutRate*OutHumRate (2)

[0127] Among them, HeadLoad is the heating load, Tset is the set target temperature

[0128] In this way, after all the second indoor units have been polled, the heating load determination module 420 can add up each heating load to obtain the corresponding total heating load. Total heating load HeadLoadTotal=∑HeadLoad.

[0129] Thus, the load rate determination unit 431 in the control module 430 can add the total cooling load and the total heating load to obtain the total load, and determine the ratio between the total cooling load and the total load as the first load rate. The first load rate coolRate = CoolLoadTotal / (CoolLoadTotal+HeadLoadTotal).

[0130] If coolRate<40%, the control unit 432 can control the outdoor unit to operate in heating mode; if coolRate>60%, the control unit 432 can control the outdoor unit to operate in cooling mode; and if 40%≤coolRate≤60%, the control unit 432 can control the outdoor unit to maintain the current mode of operation.

[0131] It can be seen that in this embodiment, when the multi-split air conditioner is in operation, the influence of the indoor and outdoor environmental temperature and humidity is comprehensively considered, so that the device for controlling the multi-split air conditioner can obtain the total cooling load of the indoor unit in the cooling mode and the total heating load of the indoor unit in the heating mode. Then, the cooling and heating load rate can be obtained according to the total cooling load and the total heating load, and the operation of the outdoor unit of the air conditioner can be controlled according to the cooling and heating load rate. In this way, the operation mode of the outdoor unit of the air conditioner is determined by combining the cooling load and the heating load, and the actual application scenario is automatically applied, thereby improving the intelligence and adaptability of the multi-split air conditioner. In addition, when determining different loads, corresponding to the influence of different indoor humidity or outdoor humidity, the user's body feeling and the characteristics of the air conditioner are fully considered, and the load can be determined more accurately, thereby performing accurate control, further improving the performance and intelligence of the air conditioner.

[0132] Combination Figure 6 The embodiment of the present disclosure provides a device 600 for controlling a multi-split air conditioner, comprising:

[0133] The processor 1000 and the memory 1001 may also include a communication interface 1002 and a bus 1003. The processor 1000, the communication interface 1002, and the memory 1001 may communicate with each other through the bus 1003. The communication interface 1002 may be used for information transmission. The processor 1000 may call the logic instructions in the memory 1001 to execute the method for controlling a multi-split air conditioner of the above embodiment.

[0134] In addition, the logic instructions in the above-mentioned memory 1001 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0135] The memory 1001 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 1000 executes the function application and data processing by running the program instructions / modules stored in the memory 1001, that is, the method for controlling a multi-split air conditioner in the above method embodiment is implemented.

[0136] The memory 1001 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 1001 may include a high-speed random access memory and may also include a non-volatile memory.

[0137] An embodiment of the present disclosure provides a device for controlling a multi-split air conditioner, comprising: a processor and a memory storing program instructions, wherein the processor is configured to execute a method for controlling a multi-split air conditioner when executing the program instructions.

[0138] Combination Figure 7 , the embodiment of the present disclosure provides an air conditioner 700, including: an air conditioner body, and the above-mentioned multi-split air conditioner control device 400 (600). The multi-split air conditioner control device 400 (600) is installed on the air conditioner body. The installation relationship described here is not limited to placement inside the product, but also includes installation connections with other components of the product, including but not limited to physical connections, electrical connections or signal transmission connections. It can be understood by those skilled in the art that the multi-split air conditioner control device 400 (600) can be adapted to a feasible air conditioner body, thereby realizing other feasible embodiments.

[0139] An embodiment of the present disclosure provides a storage medium storing program instructions, which, when run, execute the above-mentioned method for controlling a multi-split air conditioner.

[0140] An embodiment of the present disclosure provides a computer program product, which includes a computer program stored on a storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the above-mentioned method for controlling a multi-split air conditioner.

[0141] The above-mentioned storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0142] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes, or a transient storage medium.

[0143] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, individual components and functions are optional, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The scope of the embodiments of the present disclosure includes the entire scope of the claims, and all available equivalents of the claims. When used in this application, although the terms "first", "second", etc. may be used in this application to describe each element, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without changing the meaning of the description, the first element can be called the second element, and similarly, the second element can be called the first element, as long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first element and the second element are both elements, but may not be the same element. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates, the singular forms "a", "an" and "the" are intended to include the plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of one or more associated listings. In addition, when used in this application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups of these. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method or device including the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0144] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0145] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0146] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling a multi-split air conditioner, characterized in that: The method includes: Determine the cooling load corresponding to each first indoor unit according to the current indoor temperature and humidity corresponding to each first indoor unit in the cooling operation state, and obtain the total cooling load; According to the current indoor temperature corresponding to each second indoor unit in the heating operation state and the outdoor humidity correction value, the heating load corresponding to each second indoor unit is determined, and the total heating load is obtained; According to the total cooling load and the total heating load, the cooling and heating load ratio is obtained, and the operation of the outdoor unit of the air conditioner is controlled according to the cooling and heating load ratio.

2. The method according to claim 1, characterized in that The determining of the cooling load corresponding to each first indoor unit comprises: Obtain the current indoor temperature Tai, the current indoor humidity Hum, and the current power IUHP corresponding to the first current indoor unit, and determine the current cooling load correction value CoolOutRate corresponding to the current outdoor temperature Tao; According to the current indoor temperature Tai, the current indoor humidity Hum, the current power IUHP, and the current cooling load correction value CoolOutRate, the current cooling load of the first current indoor unit is determined by formula (1); CoolLoad=[((Tai-Tset)*x+(Hum-HumSet)*y)*IUHP]*CoolOutRate (1) Wherein, CoolLoad is the cooling load, Tset is the set target temperature, x is the first weight corresponding to the temperature, y is the second weight corresponding to the humidity, and x+y=1, and the value range of CoolOutRate is [0,1].

3. The method according to claim 2, characterized in that The step of determining the current cooling load correction value CoolOutRate corresponding to the current outdoor temperature Tao comprises: Determine the current cooling load correction value CoolOutRate corresponding to the current outdoor temperature Tao according to the corresponding relationship between the stored outdoor temperature range and the cooling load correction value; or, The cooling load slope is generated according to the set minimum outdoor temperature, the set maximum outdoor temperature, and the corresponding cooling value range endpoint values, and the current cooling load correction value CoolOutRate is obtained according to the cooling load slope and the current outdoor temperature Tao.

4. The method according to claim 1, characterized in that The determining of the heating load corresponding to each second indoor unit comprises: Obtain the current indoor temperature Tai and the current power IUHP corresponding to the second current indoor unit, and determine the current outdoor humidity correction value OutHumRate and the current heating load correction value HeatOutRate corresponding to the current outdoor temperature Tao; According to the current indoor temperature Tai, the current power IUHP, the current heating load correction value and the current outdoor humidity correction value OutHumRate, the current heating load is determined by formula (2); HeadLoad = [(Tset-Tai)*IUHP]*HeatOutRate*OutHumRate (2) Among them, HeadLoad is the heating load, Tset is the set target temperature, and the value range of HeatOutRate is [0,1].

5. The method according to claim 4, characterized in that The determining of the current outdoor humidity correction value OutHumRate and the current heating load correction value HeatOutRate corresponding to the current outdoor temperature Tao includes: According to the correspondence between the stored outdoor temperature range and the heating load correction value and the outdoor humidity correction value, respectively determine the current outdoor humidity correction value OutHumRate and the current heating load correction value HeatOutRate corresponding to the current outdoor temperature Tao; or, The heating load slope is generated according to the set minimum outdoor temperature, the set maximum outdoor temperature, and the corresponding endpoint values ​​of the heating value range, and the current heating load correction value HeatOutRate is obtained according to the heating load slope and the current outdoor temperature Tao.

6. The method according to any one of claims 1 to 5, characterized in that: The cooling and heating load rates are obtained as follows: Add the total cooling load to the total heating load to get the total load; The ratio of the total cooling load to the total load is determined as the first load rate, or the ratio of the total heating load to the total load is determined as the second load rate.

7. The method according to claim 6, characterized in that The controlling of the outdoor unit operation of the air conditioner according to the cooling and heating load rate includes: When the first load rate is less than a first set threshold, controlling the outdoor unit of the air conditioner to operate in a heating mode; When the first load is greater than a second set threshold, controlling the outdoor unit of the air conditioner to operate in a cooling mode; When the first load is greater than or equal to the first set threshold value and less than or equal to the second set threshold value, the outdoor unit of the air conditioner is controlled to maintain the current mode operation.

8. A device for controlling a multi-split air conditioner, characterized in that: include: A cooling load determination module is configured to determine the cooling load corresponding to each first indoor unit according to the current indoor temperature and humidity corresponding to each first indoor unit in a cooling operation state, and obtain a total cooling load; A heating load determination module is configured to determine the heating load corresponding to each second indoor unit according to the current indoor temperature corresponding to each second indoor unit in the heating operation state and the outdoor humidity correction value, and obtain the total heating load; The control module is configured to obtain a cooling and heating load rate according to the total cooling load and the total heating load, and control the operation of the outdoor unit of the air conditioner according to the cooling and heating load rate.

9. A device for controlling a multi-split air conditioner, the device comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the method for controlling a multi-split air conditioner as claimed in any one of claims 1 to 7 when executing the program instructions.

10. An air conditioner, characterized in that: include: Air conditioner body; The device for controlling a multi-split air conditioner as described in claim 8 or 9 is installed on the air conditioner body.

11. A storage medium storing program instructions, characterized in that: When the program instructions are run, they execute the method for controlling a multi-split air conditioner as described in any one of claims 1 to 7.

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