Control method, device and equipment for multi-split air conditioner and storage medium

Abstract

The invention discloses a control method, device and equipment for a multi-split air conditioner and a computer storage medium, the multi-split air conditioner comprises an outdoor unit and a plurality of indoor units, and the control method comprises the steps that indoor unit function required values of the indoor units are obtained; a target new wind energy required value of a target indoor unit in the multiple indoor units is obtained; wherein the target indoor unit comprises an indoor unit with the fresh air introduction function started; according to the indoor unit energy demand values of the multiple indoor units and the target new wind energy demand value of the target indoor unit, the total energy demand value corresponding to the multiple indoor units is determined; and according to the total energy demand values corresponding to the multiple indoor units, working parameters of a compressor of the outdoor unit are adjusted.

Description

Technical Field

[0001] The present application relates to, but is not limited to, the field of air conditioning technology, and in particular to a control method, device, equipment and computer storage medium for a multi-split air conditioner. Background Art

[0002] At present, in the field of multi-split air conditioning systems, for fresh air integrated models, in summer, if the outdoor ambient temperature is high, turning on the fresh air and introducing outdoor air into the room will increase the cooling load in the room, resulting in a worse room temperature reduction effect. When heating, if the outdoor ambient temperature is low, turning on the fresh air and introducing outdoor air into the room will increase the heat load in the room and worsen the room temperature rise effect. It can be seen that the current multi-split air conditioner cannot maintain the room temperature within a certain temperature range when introducing fresh air. Summary of the invention

[0003] The present application provides a control method, device, equipment and computer storage medium for a multi-split air conditioner, which solves the problem that the multi-split air conditioner cannot maintain the temperature of the room within a certain temperature range when introducing fresh air. The present application dynamically adjusts the output frequency of the compressor according to the total energy demand values ​​corresponding to multiple indoor units to compensate for the changes in cold / heat loads caused by the fresh air, so that the temperature of the room is maintained within a certain temperature range, that is, the fluctuation of the indoor temperature after the introduction of fresh air is reduced.

[0004] The technical solution of this application is implemented as follows:

[0005] A control method for a multi-split air conditioner, the multi-split air conditioner comprising an outdoor unit and a plurality of indoor units, comprising:

[0006] Obtaining the required indoor energy values ​​of the plurality of indoor units;

[0007] Obtaining a target fresh air energy requirement value of a target indoor unit among the multiple indoor units; wherein the target indoor unit includes an indoor unit with a fresh air introduction function turned on;

[0008] Determining total energy requirements corresponding to the multiple indoor units according to the internal function energy requirements of the multiple indoor units and the target fresh air energy requirement of the target indoor unit;

[0009] According to the total energy demand values ​​corresponding to the multiple indoor units, the operating parameters of the compressor of the outdoor unit are adjusted.

[0010] A control device for a multi-split air conditioner, the multi-split air conditioner comprising an outdoor unit and a plurality of indoor units, the device comprising:

[0011] An acquisition module, used for acquiring the required values ​​of the indoor functions of the plurality of indoor units;

[0012] An acquisition module, used to acquire a target fresh air energy requirement value of a target indoor unit among the multiple indoor units; wherein the target indoor unit includes an indoor unit with a fresh air introduction function turned on;

[0013] A processing module, configured to determine the total energy requirements corresponding to the plurality of indoor units according to the internal function energy requirements of the plurality of indoor units and the target fresh air energy requirement of the target indoor unit;

[0014] The processing module is used to adjust the working parameters of the compressor of the outdoor unit according to the total energy demand values ​​corresponding to the multiple indoor units.

[0015] A control device for a multi-split air conditioner, characterized in that the control device comprises:

[0016] A memory for storing executable instructions;

[0017] The processor is used to execute the executable instructions stored in the memory to implement the control method of the multi-split air conditioner.

[0018] A computer-readable storage medium includes a control program for a multi-split air conditioner. When the control program for the multi-split air conditioner is executed by a processor, the steps of the control method for the multi-split air conditioner are implemented.

[0019] The control method, device, equipment and computer storage medium of a multi-split air conditioner provided by the present application, the air conditioner includes an outdoor unit and multiple indoor units, and the control method includes: obtaining the internal function energy demand values ​​of multiple indoor units; obtaining the target fresh air energy demand value of a target indoor unit among the multiple indoor units; wherein the target indoor unit includes an indoor unit with a fresh air introduction function turned on; determining the total energy demand values ​​corresponding to the multiple indoor units according to the internal function energy demand values ​​of the multiple indoor units and the target fresh air energy demand value of the target indoor unit; adjusting the working parameters of the compressor of the outdoor unit according to the total energy demand values ​​corresponding to the multiple indoor units. In other words, the present application dynamically adjusts the output frequency of the compressor according to the total energy demand values ​​corresponding to the multiple indoor units, compensates for the cold / heat load changes caused by the fresh air, and maintains the temperature of the room within a certain temperature range, that is, reduces the fluctuation of the indoor temperature after the fresh air is introduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The control method of the multi-split air conditioner provided in the embodiment of the present application is shown in the flow chart. Figure 1 ;

[0021] Figure 2 The control method of the multi-split air conditioner provided in the embodiment of the present application is shown in the flow chart. Figure 2 ;

[0022] Figure 3The control method of the multi-split air conditioner provided in the embodiment of the present application is shown in the flow chart. Figure 3 ;

[0023] Figure 4 A schematic diagram of the structure of an indoor unit of a multi-split air conditioner provided in an embodiment of the present application;

[0024] Figure 5 A schematic diagram of a control device for a multi-split air conditioner provided in an embodiment of the present application;

[0025] Figure 6 A schematic diagram of the structure of a control device for a multi-split air conditioner provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0027] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0028] In the following description, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0030] The embodiment of the present application provides a control method for a multi-split air conditioner, wherein the multi-split air conditioner includes an outdoor unit and a plurality of indoor units. Figure 1 As shown, the method comprises the following steps:

[0031] Step 101: Obtain the required indoor energy values ​​of multiple indoor units.

[0032] The indoor unit's internal energy requirement represents the energy requirement of the indoor unit to the outdoor unit. The indoor unit's internal energy requirement is used as one of the control bases. The outdoor unit can adjust the compressor's operating parameters such as frequency according to the indoor unit's capacity requirement, thereby providing appropriate capacity output.

[0033] In some embodiments of the present application, the multi-split air conditioner includes an outdoor unit and multiple indoor units. Any indoor unit can save installation space by arranging the duct unit and the fresh air fan in the same structure so that the fresh air outlet and the indoor return air outlet share the return air duct. At the same time, since the fresh air introduced from the outside can contact the heat exchanger in the duct unit when flowing through the shared return air duct, the temperature of the introduced fresh air can be adjusted when the fresh air flows through the heat exchanger, so that the temperature of the fresh air sent into the room is more comfortable.

[0034] It can be understood that the multi-split air conditioner is an all-in-one fresh air machine, in which the duct machine and the fresh air machine are combined into one, forming a whole structure and sharing a controller / processor.

[0035] In the embodiment of the present application, obtaining the required internal energy values ​​of the multiple indoor units can be achieved in the following manner: obtaining the rated cooling capacities of the multiple indoor units, and determining the required internal energy values ​​of the multiple indoor units according to the rated cooling capacities of the multiple indoor units.

[0036] In the embodiment of the present application, obtaining the required internal function energy values ​​of the plurality of indoor units may also be achieved in the following manner: obtaining the capacity matching numbers of the plurality of indoor units, and determining the required internal function energy values ​​of the plurality of indoor units according to the capacity matching numbers of the plurality of indoor units.

[0037] For example, for a 22-model indoor unit, the corresponding indoor energy requirement is 2200W.

[0038] The execution subject of this embodiment may be a multi-split air conditioner, which has functions such as data processing, data communication, and program running. Usually, the operation of each component in a multi-split air conditioner can be driven by a core controller / processor, so the execution subject of this embodiment may also be a controller / processor in the multi-split air conditioner.

[0039] Step 102: Obtain a target fresh wind energy requirement value of a target indoor unit among multiple indoor units.

[0040] Among them, the target indoor unit includes the indoor unit with the fresh air introduction function turned on.

[0041] In the embodiment of the present application, the target fresh air energy requirement of the target indoor unit represents the fresh air energy requirement of the indoor unit to the outdoor unit. When the fresh air integrated machine is turned on for cooling / heating, the target indoor unit turns on the fresh air introduction function, which will increase the load in the room. The target fresh air energy requirement of the target indoor unit is used as one of the control bases. The outdoor unit can adjust the working parameters of the compressor, such as frequency, according to the target fresh air energy requirement of the target indoor unit, and thus provide appropriate capacity output.

[0042] Here, the fresh wind energy requirement of any indoor unit can be detected in real time to obtain the fresh wind energy requirement; the basic fresh wind energy requirement of the indoor unit can also be obtained, combined with the working parameters of the fresh air fan when the fresh air introduction function of the indoor unit is turned on, such as the fresh air volume or the fresh air speed, to determine the fresh wind energy requirement of the indoor unit.

[0043] Step 103: Determine the total energy requirements corresponding to the multiple indoor units according to the internal function energy requirements of the multiple indoor units and the target fresh air energy requirement of the target indoor unit.

[0044] In the embodiment of the present application, the total energy requirement corresponding to the multiple indoor units is determined comprehensively based on the internal function energy requirements of the multiple indoor units and the target fresh air energy requirement of the target indoor unit. The present application is aimed at the fresh air integrated machine, and the fresh air and the air conditioner share a controller / processor. The target fresh air energy requirement corresponding to the fresh air and the internal function energy requirement corresponding to the air conditioner are comprehensively considered to obtain the total energy requirement corresponding to the multiple indoor units, and then provide the total energy requirement determined in real time to the outdoor unit, so that the working parameters of the compressor of the outdoor unit can be matched and adjusted.

[0045] Step 104: Adjust the operating parameters of the compressor of the outdoor unit according to the total energy demand values ​​corresponding to the multiple indoor units.

[0046] In the embodiment of the present application, the operating parameters of the compressor may include the output frequency.

[0047] When the indoor unit n in the fresh air integrated machine is turned on for cooling / heating, the output frequency of the compressor can be determined by the internal functional energy demand of the indoor unit n, or it can be operated according to a preset output frequency. Exemplarily, the compressor operates at a corresponding initial output frequency based on the internal functional energy demand of the indoor unit n. The initial energy demand is determined by the capacity matching number and reference coefficient of the indoor unit n. The reference coefficient is determined according to the actual output frequency range and working requirements of the compressor. For example, the reference coefficient is 2 or 3, and the present application does not make specific limitations on this. The greater the initial energy demand, the greater the initial output frequency. Among them, 1≤n≤N, N is the total number of multiple indoor units, and n is a positive integer. As another example, the initial output frequency corresponding to the compressor is the maximum output frequency of the compressor. For example, m is 2 or 3, which is not specifically limited in the present application. Taking m as 2 as an example, if the maximum output frequency of the compressor is 200 Hz, then the initial output frequency is 100 Hz.

[0048] Furthermore, when the indoor unit n in the fresh air integrated machine is turned on for cooling / heating, the target indoor unit turns on the fresh air introduction function, which will increase the load in the room, and obtain the target fresh air energy requirement of the target indoor unit. According to the internal function energy requirements of the multiple indoor units running with cooling / heating turned on and the target fresh air energy requirement of the target indoor unit, the total energy requirement corresponding to the multiple indoor units is determined; finally, according to the total energy requirement corresponding to the multiple indoor units, the output frequency of the compressor is adjusted to compensate for the changes in cold / heat load caused by the fresh air, so as to maintain the temperature of the room within a certain temperature range, that is, to reduce the fluctuation of the indoor temperature after the introduction of fresh air.

[0049] A control method for a multi-split air conditioner provided in an embodiment of the present application comprises the following steps: obtaining internal function energy requirements of a plurality of indoor units; obtaining a target fresh air energy requirement of a target indoor unit among the plurality of indoor units; wherein the target indoor unit comprises an indoor unit with a fresh air introduction function turned on; determining a total energy requirement corresponding to the plurality of indoor units according to the internal function energy requirements of the plurality of indoor units and the target fresh air energy requirement of the target indoor unit; adjusting a working parameter of a compressor of an outdoor unit according to the total energy requirement corresponding to the plurality of indoor units; thus, dynamically adjusting the output frequency of the compressor according to the total energy requirement corresponding to the plurality of indoor units to compensate for the cold / heat load changes caused by the fresh air, thereby maintaining the temperature of the room within a certain temperature range, i.e. reducing the fluctuation of the indoor temperature after the introduction of the fresh air.

[0050] In some embodiments, the core controller / processor in the multi-split air conditioner can be set in the outdoor unit, and the core controller / processor in the outdoor unit determines the total energy requirement corresponding to the multiple indoor units based on the acquired internal function energy requirement values ​​of the multiple indoor units and the target fresh air energy requirement value of the target indoor unit; further, the core controller / processor in the outdoor unit adjusts the operating parameters of the compressor of the outdoor unit based on the total energy requirement values ​​corresponding to the multiple indoor units.

[0051] In some embodiments, the core controller / processor in the multi-split air conditioner can also be set in the indoor unit, and the core controller / processor in the indoor unit determines the total energy requirement values ​​corresponding to the multiple indoor units based on the acquired internal function energy requirement values ​​of the multiple indoor units and the target fresh air energy requirement value of the target indoor unit; further, the core controller / processor in the indoor unit adjusts the operating parameters of the compressor of the outdoor unit according to the total energy requirement values ​​corresponding to the multiple indoor units.

[0052] In some embodiments, there may be multiple core controllers / processors in a multi-split air conditioner, and obtaining at least part of the internal function energy requirements of multiple indoor units, obtaining the target fresh air energy requirements of the target indoor unit, and obtaining the total energy requirements corresponding to the multiple indoor units may be implemented by the core controller / processor in the indoor unit; the core controller / processor in the outdoor unit may adjust the operating parameters of the compressor of the outdoor unit according to the total energy requirements corresponding to the multiple indoor units.

[0053] In some embodiments of the present application, step 102 obtains the target fresh air energy requirement value of the target indoor unit among the multiple indoor units, which can be obtained by Figure 2 The steps shown achieve:

[0054] Step 1021: Obtain the outdoor ambient temperature corresponding to the target indoor unit.

[0055] In the embodiment of the present application, the outdoor ambient temperature T0 corresponding to the target indoor unit is the detection value at the same position. It can be seen that the fresh air integrated model provided by the present application not only shares a controller with the fresh air and the air conditioner, but also uses the detection value at the same position when obtaining the outdoor ambient temperature corresponding to the indoor unit with the fresh air turned on, so as to reduce the control error and improve the reliability of the electronic control.

[0056] Step 1022: Obtain the indoor ambient temperature corresponding to the target indoor unit and the reference fresh air energy requirement corresponding to the target indoor unit.

[0057] In the embodiment of the present application, the target indoor unit i starts fresh air operation, and the indoor environment temperature T corresponding to the target indoor unit i is obtained. i The reference fresh air energy demand w corresponding to the target indoor unit i i . Wherein, 1≤i≤N, N is the total number of indoor units, and i is a positive integer.

[0058] Step 1023: Obtain the operating parameters of the fresh air fan corresponding to the target indoor unit.

[0059] In the embodiment of the present application, the operating parameters of the fresh air fan corresponding to the target indoor unit i include but are not limited to the fresh air volume F corresponding to the target indoor unit i. i , the fresh air level H corresponding to the target indoor unit i i .

[0060] Exemplarily, the wind gear has two gears, the first gear is 50% output, and the second gear is 100% output. The present application does not specifically limit the number of gears included in the wind gear.

[0061] Step 1024: determine the target fresh air energy requirement of the target indoor unit according to the outdoor ambient temperature, the indoor ambient temperature corresponding to the target indoor unit, the reference fresh air energy requirement corresponding to the target indoor unit, and the operating parameters of the fresh air fan corresponding to the target indoor unit.

[0062] In the embodiment of the present application, according to the outdoor environment temperature T0, the indoor environment temperature T corresponding to the target indoor unit i i , the reference fresh air energy demand value w corresponding to the target indoor unit i i The operating parameters F of the fresh air fan corresponding to the target indoor unit i i or H i , determine the target fresh air energy requirement w of the target indoor unit i. As mentioned above, the reference fresh air energy requirement w corresponding to the target indoor unit i is i It can be detected in real time; the basic fresh air energy requirement of the indoor unit can also be obtained, combined with the working parameters of the fresh air fan when the indoor unit turns on the fresh air introduction function, such as the fresh air volume or fresh air speed, to determine w i The basic new wind energy requirement can be set according to actual needs and is not specifically limited in this application.

[0063] In some embodiments of the present application, if the target indoor unit is an indoor unit with a fresh air introduction function turned on in cooling mode, step 1024 determines the target fresh air energy requirement of the target indoor unit according to the outdoor ambient temperature, the indoor ambient temperature corresponding to the target indoor unit, the reference fresh air energy requirement corresponding to the target indoor unit, and the working parameters of the fresh air fan corresponding to the target indoor unit, which can be achieved by the following steps:

[0064] Determine a first ratio of the outdoor ambient temperature to the indoor ambient temperature corresponding to the target indoor unit;

[0065] In the embodiment of the present application, if the target indoor unit i is an indoor unit with the fresh air introduction function turned on in the cooling mode, the first ratio corresponding to the target indoor unit i is determined

[0066] The target fresh air energy requirement of the target indoor unit is determined according to the first ratio corresponding to the target indoor unit, the reference fresh air energy requirement corresponding to the target indoor unit and the working parameters of the fresh air fan corresponding to the target indoor unit.

[0067] Here, the operating parameters of the fresh air fan corresponding to the target indoor unit i are H i For example, according to H i , the reference fresh air energy demand value w corresponding to the target indoor unit i i , determine the target fresh wind energy requirement of the target indoor unit i.

[0068] In the embodiment of the present application, the target fresh air energy requirement of the target indoor unit i can be determined by the following formula (1):

[0069]

[0070] It should be noted that the target indoor unit is an indoor unit with the fresh air introduction function turned on in the cooling mode. When there are multiple target indoor units, the target fresh air energy requirement of the target indoor unit is comprehensively determined according to the fresh air energy requirements corresponding to each indoor unit with the fresh air introduction function turned on. For example, the sum of the fresh air energy requirements corresponding to each indoor unit with the fresh air introduction function turned on is used as the target fresh air energy requirement of the target indoor unit.

[0071] In some embodiments of the present application, if the target indoor unit is an indoor unit with a fresh air introduction function turned on in the heating mode, step 1024 determines the target fresh air energy requirement of the target indoor unit according to the outdoor ambient temperature, the indoor ambient temperature corresponding to the target indoor unit, the reference fresh air energy requirement corresponding to the target indoor unit, and the working parameters of the fresh air fan corresponding to the target indoor unit, which can be achieved by the following steps:

[0072] Determine the absolute value of the difference between the outdoor ambient temperature and the indoor ambient temperature corresponding to the target indoor unit;

[0073] In the embodiment of the present application, if the target indoor unit i is an indoor unit with the fresh air introduction function turned on in the heating mode, the absolute value of the difference between the indoor and outdoor temperatures of the target indoor unit i is determined to be |T0-T i |.

[0074] determining a second ratio of the absolute value to the indoor ambient temperature corresponding to the target indoor unit;

[0075] Determine the second ratio corresponding to the target indoor unit i

[0076] The target fresh air energy requirement of the target indoor unit is determined according to the second ratio corresponding to the target indoor unit, the reference fresh air energy requirement corresponding to the target indoor unit and the working parameters of the fresh air fan corresponding to the target indoor unit.

[0077] Here, the operating parameters of the fresh air fan corresponding to the target indoor unit i are H i For example, according to H i , the reference fresh air energy demand value w corresponding to the target indoor unit i i , determine the target fresh wind energy requirement of the target indoor unit i.

[0078] In the embodiment of the present application, the target fresh air energy requirement of the target indoor unit i can be determined by the following formula (2):

[0079]

[0080] In some embodiments of the present application, the outdoor ambient temperature, the operating parameters of the fresh air fan corresponding to the target indoor unit, and the target fresh air energy requirement of the target indoor unit have the same change trends.

[0081] It should be noted that the target indoor unit is an indoor unit with the fresh air introduction function turned on in the heating mode. When there are multiple target indoor units, the target fresh air energy requirement of the target indoor unit is comprehensively determined according to the fresh air energy requirements corresponding to each indoor unit with the fresh air introduction function turned on. For example, the sum of the fresh air energy requirements corresponding to each indoor unit with the fresh air introduction function turned on is used as the target fresh air energy requirement of the target indoor unit.

[0082] In some embodiments of the present application, step 104 adjusts the working parameters of the compressor of the outdoor unit according to the total energy demand values ​​corresponding to the multiple indoor units, which can be achieved by the following steps:

[0083] The operating parameters of the compressor are adjusted according to the adjustment direction corresponding to the change trend of the total energy demand values ​​corresponding to the multiple indoor units.

[0084] In an embodiment of the present application, when the changing trend of the total energy demand values ​​corresponding to multiple indoor units increases, the adjustment direction of the output frequency of the compressor is to increase, thereby increasing the output frequency of the compressor, so as to achieve real-time matching of internal and external functions, reduce the impact of fresh air on room temperature, compensate for the changes in cold / heat load caused by fresh air, and maintain the temperature comfort of the room.

[0085] In a control scenario of a realizable multi-split air conditioner, the present application provides a fresh air all-in-one machine, whose fresh air outlet is set at the return air outlet of the duct machine, that is, the fresh air fan and the duct machine fan must be turned on in conjunction to send fresh air into the room through the duct machine outlet. This structural design can combine the fresh air fan and the duct machine into one, saving a certain amount of installation space, and the fresh air sent into the room passes through the evaporator of the duct machine body, which can adjust the fresh air temperature and send comfortable fresh air into the room.

[0086] When using the integrated fresh air machine in the multi-split field, all the indoor units are the integrated fresh air machine. When the fresh air is turned on, the room load will increase, affecting the cooling / heating effect of the air conditioner. The outdoor unit of the integrated fresh air machine can be matched with an outdoor unit with a larger cooling capacity according to the conventional matching. However, how to calculate the increased load according to the amount of fresh air turned on to reduce the temperature fluctuation caused by the fresh air to the room is an urgent problem to be solved by the integrated fresh air multi-split system.

[0087] The present invention provides a fresh air integrated multi-split control method, which can calculate the energy demand change according to the amount of fresh air opened in the room, and transmit the appropriate energy demand to the outdoor unit, so that the outdoor unit adjusts its capacity, thereby achieving real-time matching of the energy demands of the internal and external units, thereby ensuring the comfort of the room temperature and saving energy.

[0088] The control method provided by the present application is further described below. Here, the relevant parameters involved are described first. The first indoor function demand is represented by q1, the second indoor function demand is represented by q2, ... the nth indoor function demand is represented by qn; the indoor function demand values ​​of multiple indoor units are represented by Q, that is, the total indoor energy demand;

[0089] The fresh wind energy of the first indoor unit needs to be expressed as w1, the fresh wind energy of the second indoor unit needs to be expressed as w2, and the fresh wind energy of the nth indoor unit needs to be expressed as w n ; The internal energy requirement of multiple indoor units is expressed as W.

[0090] The fresh air level of the first indoor unit is denoted as H1, the fresh air level of the second indoor unit is denoted as H2, and the fresh air level of the nth indoor unit is denoted as H n ;

[0091] The indoor ambient temperature of the first indoor unit is denoted as T1, the indoor ambient temperature of the second indoor unit is denoted as T2, and the indoor ambient temperature of the nth indoor unit is denoted as T n ;

[0092] Reference Figure 3 As shown, the method comprises the following steps:

[0093] S301: The fresh air integrated cooling / heating machine is turned on and running.

[0094] S302: Determine the number of fresh air machines that are turned on.

[0095] It should be noted that for models that do not turn on fresh air, the fresh air energy demand is not calculated.

[0096] S303: Real-time detection of the outdoor ambient temperature and the size of the windshield opening of the fresh air fan.

[0097] Get T0 and H n .

[0098] S304: Calculate the required amount of fresh wind energy according to the energy demand calculation formula.

[0099] When the internal cooling mechanism is running:

[0100]

[0101] When the internal heating is running:

[0102]

[0103] S305: Summarize all internal function energy requirements and provide them to the external unit.

[0104] Total indoor energy requirement Q = (q1+w1)+(q2+w2)+…+(qn+w n )

[0105] In step S304, when the internal cooling system is in operation: the fresh wind energy required This is because the cooling load brought by fresh air to the room is related to the fresh air volume (or wind speed) and the outdoor ambient temperature. The higher the outdoor ambient temperature and the greater the fresh air volume, the greater the cooling load brought to the room when the fresh air is turned on. Therefore, the outdoor ambient temperature, the fresh air volume and the fresh air energy demand are all proportional. Similarly, when the indoor heating is running: This is because the heat load brought by fresh air to the room is related to the fresh air volume (or windshield) and the outdoor ambient temperature. The lower the outdoor ambient temperature and the greater the fresh air volume, the greater the heat load brought to the room when the fresh air is turned on. Therefore, the outdoor ambient temperature, the fresh air volume and the fresh air energy demand are all proportional. In this way, when multiple fresh air all-in-one machines are used, the fresh air cold / heat load is calculated based on the opening of the fresh air windshield and the outdoor ambient temperature, and the appropriate energy demand is provided to the outdoor unit.

[0106] The structural diagram of the indoor unit of a multi-split air conditioner provided in the embodiment of the present application is shown in FIG. Figure 4 As shown, the indoor unit 400 of the multi-split air conditioner includes: a duct unit 401 and a fresh air fan 402.

[0107] The duct machine 401 is provided with a heat exchanger 403, a duct machine fan wheel 404, a duct machine motor 405, an indoor return air port 406, and an indoor air outlet 407; the fresh air fan 402 is provided with a fresh air fan fan wheel 408, a fresh air fan motor 409, a fresh air inlet and return air port 410, and a fresh air outlet 411; wherein the fresh air inlet 410, the fresh air outlet 411 and the indoor air outlet 407 are connected to form a fresh air duct, which is used for outdoor fresh air to be introduced from the fresh air inlet 410 and then discharged from the fresh air outlet 411. 11 flows out, flows through the fresh air duct and is introduced into the room from the indoor air outlet 407; the indoor return air outlet 406 and the indoor air outlet 407 are connected to form a return air duct, which is used for indoor air to be introduced from the indoor return air outlet 406, and discharged into the room from the indoor air outlet 407 after flowing through the return air duct; the fresh air inlet 410 and the indoor return air outlet 406 share the return air duct, which is used for outdoor fresh air to be introduced from the fresh air inlet 410 and indoor air to be introduced from the indoor return air outlet 406 at the same time, and the mixed fresh air is introduced into the room from the indoor air outlet 407 via the return air duct.

[0108] It can be understood that the indoor unit can save installation space by arranging the duct unit and the fresh air fan in the same structure so that the fresh air outlet and the indoor return air outlet share the return air duct. At the same time, since the fresh air introduced from the outside can contact the heat exchanger in the duct unit when flowing through the shared return air duct, the temperature of the introduced fresh air can be adjusted when the fresh air flows through the heat exchanger, making the temperature of the fresh air delivered to the room more comfortable. When the multi-split air conditioner of the present application is turned on for fresh air operation, the impact of the fresh air on the room temperature can be reduced, the cold / heat load changes caused by the fresh air can be compensated, and the temperature comfort of the room can be maintained.

[0109] A schematic diagram of a control device for a multi-split air conditioner provided in an embodiment of the present application, wherein the multi-split air conditioner in the present application includes an outdoor unit and multiple indoor units, such as Figure 5 As shown, the control device 500 of the multi-split air conditioner includes:

[0110] An acquisition module 501 is used to acquire the required values ​​of the indoor functions of multiple indoor units;

[0111] The acquisition module 501 is used to acquire the target fresh air energy requirement value of a target indoor unit among multiple indoor units; wherein the target indoor unit includes an indoor unit with a fresh air introduction function turned on;

[0112] The processing module 502 is used to determine the total energy demand values ​​corresponding to the multiple indoor units according to the internal function energy demand values ​​of the multiple indoor units and the target fresh air energy demand value of the target indoor unit;

[0113] The processing module 502 is used to adjust the working parameters of the compressor of the outdoor unit according to the total energy demand values ​​corresponding to the multiple indoor units.

[0114] In some embodiments of the present application, the acquisition module 501 is used to obtain the outdoor ambient temperature corresponding to the target indoor unit; obtain the indoor ambient temperature corresponding to the target indoor unit and the reference fresh wind energy requirement corresponding to the target indoor unit; obtain the working parameters of the fresh air fan corresponding to the target indoor unit; the processing module 502 is used to determine the target fresh wind energy requirement of the target indoor unit based on the outdoor ambient temperature, the indoor ambient temperature corresponding to the target indoor unit, the reference fresh wind energy requirement corresponding to the target indoor unit and the working parameters of the fresh air fan corresponding to the target indoor unit.

[0115] In some embodiments of the present application, the processing module 502 is used to determine a first ratio of the outdoor ambient temperature to the indoor ambient temperature corresponding to the target indoor unit if the target indoor unit is an indoor unit with a fresh air introduction function turned on in cooling mode; and determine the target fresh air energy requirement of the target indoor unit based on the first ratio corresponding to the target indoor unit, the reference fresh air energy requirement corresponding to the target indoor unit, and the working parameters of the fresh air fan corresponding to the target indoor unit.

[0116] In some embodiments of the present application, the processing module 502 is used to determine the absolute value of the difference between the outdoor ambient temperature and the indoor ambient temperature corresponding to the target indoor unit if the target indoor unit is an indoor unit with a fresh air introduction function turned on in the heating mode; determine a second ratio of the absolute value to the indoor ambient temperature corresponding to the target indoor unit; and determine the target fresh air energy requirement of the target indoor unit based on the second ratio corresponding to the target indoor unit, the reference fresh air energy requirement corresponding to the target indoor unit, and the working parameters of the fresh air fan corresponding to the target indoor unit.

[0117] In some embodiments of the present application, the outdoor ambient temperature, the operating parameters of the fresh air fan corresponding to the target indoor unit, and the target fresh air energy requirement of the target indoor unit have the same change trends.

[0118] In some embodiments of the present application, the processing module 502 is used to adjust the working parameters of the compressor according to the adjustment direction corresponding to the change trend of the total energy demand values ​​corresponding to the multiple indoor units.

[0119] In some embodiments of the present application, the outdoor ambient temperature corresponding to the target indoor unit is a detection value at the same location.

[0120] The present application provides a control device for a multi-split air conditioner, which includes an outdoor unit and multiple indoor units. The control device includes: an acquisition module, which is used to acquire the internal functional energy requirements of the multiple indoor units; an acquisition module, which is used to acquire the target fresh air energy requirement of a target indoor unit among the multiple indoor units; wherein the target indoor unit includes an indoor unit with a fresh air introduction function turned on; a processing module, which is used to determine the total energy requirement corresponding to the multiple indoor units based on the internal functional energy requirements of the multiple indoor units and the target fresh air energy requirement of the target indoor unit; and a processing module, which is used to adjust the working parameters of the compressor of the outdoor unit based on the total energy requirement corresponding to the multiple indoor units.

[0121] In addition, each functional module in this embodiment can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or software functional modules.

[0122] A structural diagram of a control device for a multi-split air conditioner provided in an embodiment of the present application is shown in FIG. Figure 6 As shown, the control device 600 of the multi-split air conditioner includes:

[0123] Memory 601, used to store executable instructions;

[0124] The processor 602 is used to execute the executable instructions stored in the memory 601 to implement the steps in the aforementioned control method of the multi-split air conditioner.

[0125] In the embodiments of the present application, the processor may be any conventional processor, such as a commercially available central processing unit (CPU). The processor may be a dedicated device such as an application specific integrated circuit (ASIC) or other hardware-based processor. Figure 6 The processor and memory are functionally illustrated, but it should be understood by those skilled in the art that the processor or memory may actually include multiple processors or memories that may be stored in the same physical housing, or multiple processors or memories that may not be stored in the same physical housing. For example, the memory may be a hard drive or other storage medium located in a housing different from the computer system. Therefore, references to processors or computers will be understood to include references to a collection of processors or computers or memories that may or may not operate in parallel. Different from using a single processor to perform the steps described herein.

[0126] The processor can also be an integrated circuit chip with signal processing capabilities, such as a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., where the general-purpose processor can be a microprocessor or any of the above conventional processors.

[0127] The embodiment of the present application provides a computer-readable storage medium, which stores one or more programs, and the one or more programs can be executed by one or more processors to implement the following. Figure 1 The steps in the control method of the multi-split air conditioner provided in the corresponding embodiment will not be repeated here.

[0128] The above-mentioned computer storage medium / memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory (Flash Memory), a magnetic surface memory, an optical disk, or a compact disc read-only memory (CD-ROM) and the like; it can also be various terminals including one or any combination of the above-mentioned memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

[0129] It should be understood that the "one embodiment" or "an embodiment" or "an embodiment of the present application" or "the aforementioned embodiment" or "some embodiments" or "some implementation methods" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" or "an embodiment of the present application" or "the aforementioned embodiment" or "some embodiments" or "some implementation methods" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0130] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0131] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0132] In addition, all functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be a separate unit, or two or more units may be integrated into one unit; the above-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0133] The methods disclosed in several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0134] The features disclosed in several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0135] The features disclosed in several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0136] A person skilled in the art can understand that all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM), magnetic disks or optical disks, etc., various media that can store program codes.

[0137] Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application can be essentially or partly embodied in the form of a software product that contributes to the relevant technology. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0138] It is worth noting that the drawings in the embodiments of the present application are only for illustrating the schematic positions of various components on the terminal device and do not represent the actual positions in the terminal device. The actual positions of various components or areas may be changed or offset accordingly according to actual conditions (for example, the structure of the terminal device), and the proportions of different parts of the terminal device in the drawings do not represent the actual proportions.

[0139] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A control method for a multi-split air conditioner, the multi-split air conditioner comprising an outdoor unit and a plurality of indoor units, characterized in that: The control method comprises: Obtaining the required indoor energy values ​​of the plurality of indoor units; Obtaining a target fresh air energy requirement value of a target indoor unit among the multiple indoor units; wherein the target indoor unit includes an indoor unit with a fresh air introduction function turned on; Determining total energy requirements corresponding to the multiple indoor units according to the internal function energy requirements of the multiple indoor units and the target fresh air energy requirement of the target indoor unit; According to the total energy demand values ​​corresponding to the multiple indoor units, the operating parameters of the compressor of the outdoor unit are adjusted.

2. The control method according to claim 1, characterized in that: The obtaining of a target fresh wind energy requirement value of a target indoor unit among the multiple indoor units includes: Obtaining the outdoor ambient temperature corresponding to the target indoor unit; Acquire the indoor ambient temperature corresponding to the target indoor unit and the reference fresh air energy requirement corresponding to the target indoor unit; Obtaining operating parameters of a fresh air fan corresponding to the target indoor unit; The target fresh air energy requirement of the target indoor unit is determined according to the outdoor ambient temperature, the indoor ambient temperature corresponding to the target indoor unit, the reference fresh air energy requirement corresponding to the target indoor unit and the working parameters of the fresh air fan corresponding to the target indoor unit.

3. The control method according to claim 2, characterized in that: The step of determining the target fresh air energy requirement of the target indoor unit according to the outdoor ambient temperature, the indoor ambient temperature corresponding to the target indoor unit, the reference fresh air energy requirement corresponding to the target indoor unit, and the working parameter of the fresh air fan corresponding to the target indoor unit includes: If the target indoor unit is an indoor unit with a fresh air introduction function turned on in cooling mode, determining a first ratio of the outdoor ambient temperature to the indoor ambient temperature corresponding to the target indoor unit; The target fresh air energy requirement of the target indoor unit is determined according to the first ratio corresponding to the target indoor unit, the reference fresh air energy requirement corresponding to the target indoor unit and the working parameter of the fresh air fan corresponding to the target indoor unit.

4. The control method according to claim 2, characterized in that: The step of determining the target fresh air energy requirement of the target indoor unit according to the outdoor ambient temperature, the indoor ambient temperature corresponding to the target indoor unit, the reference fresh air energy requirement corresponding to the target indoor unit, and the working parameter of the fresh air fan corresponding to the target indoor unit includes: If the target indoor unit is an indoor unit with a fresh air introduction function turned on in the heating mode, determining an absolute value of a difference between the outdoor ambient temperature and the indoor ambient temperature corresponding to the target indoor unit; determining a second ratio of the absolute value to the indoor ambient temperature corresponding to the target indoor unit; The target fresh air energy requirement of the target indoor unit is determined according to the second ratio corresponding to the target indoor unit, the reference fresh air energy requirement corresponding to the target indoor unit and the working parameters of the fresh air fan corresponding to the target indoor unit.

5. The control method according to claim 2, characterized in that: The outdoor ambient temperature, the operating parameters of the fresh air fan corresponding to the target indoor unit, and the target fresh air energy requirement of the target indoor unit have the same change trends.

6. The control method according to any one of claims 1 to 5, characterized in that: The step of adjusting the operating parameters of the compressor of the outdoor unit according to the total energy demand values ​​corresponding to the plurality of indoor units includes: The operating parameters of the compressor are adjusted according to the adjustment direction corresponding to the change trend of the total energy demand values ​​corresponding to the multiple indoor units.

7. The control method according to any one of claims 2 to 5, characterized in that: The outdoor ambient temperature corresponding to the target indoor unit is a detection value at the same location.

8. A control device for a multi-split air conditioner, the multi-split air conditioner comprising an outdoor unit and a plurality of indoor units, characterized in that: include: An acquisition module, used for acquiring the required values ​​of the indoor functions of the plurality of indoor units; An acquisition module, used to acquire a target fresh air energy requirement value of a target indoor unit among the multiple indoor units; wherein the target indoor unit includes an indoor unit with a fresh air introduction function turned on; A processing module, configured to determine the total energy requirements corresponding to the plurality of indoor units according to the internal function energy requirements of the plurality of indoor units and the target fresh air energy requirement of the target indoor unit; The processing module is used to adjust the working parameters of the compressor of the outdoor unit according to the total energy demand values ​​corresponding to the multiple indoor units.

9. A control device for a multi-split air conditioner, characterized in that: The control device comprises: A memory for storing executable instructions; A processor is used to execute the executable instructions stored in the memory to implement the control method of the multi-split air conditioner according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a control program for the multi-split air conditioner. When the control program for the multi-split air conditioner is executed by a processor, the steps of the control method for the multi-split air conditioner as described in any one of claims 1 to 7 are implemented.

Images