Control method, controller, air conditioner and medium for air conditioner

Abstract

The application embodiment proposes a control method, a controller, an air conditioner and a medium of the air conditioner, comprising the following steps: firstly, the application embodiment determines the target wind speed and wind gear of the indoor unit according to the indoor environment temperature and the set temperature, controls the indoor unit to work at the target wind speed and wind gear, and regulates the indoor environment temperature; secondly, for the indoor unit without a humidity sensor, the application embodiment determines the dew point temperature according to the indoor environment temperature and the set humidity gear, which is suitable for the scene without the humidity sensor; then, the application embodiment also determines the humidity control coefficient according to the dew point temperature, adjusts the energy demand reference value of the indoor unit by using the humidity control coefficient to obtain the indoor unit capacity demand, and determines the target operation frequency of the compressor according to the indoor unit capacity demand, controls the compressor to work at the target operation frequency, thereby being capable of simultaneously regulating the temperature and humidity of multiple groups of pipe multi-split indoor units, and simultaneously meeting the refrigeration and dehumidification requirements.

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment technology, and in particular to a control method, controller, air conditioner, and medium for an air conditioner. Background Technology

[0002] In related technologies, multi-pipe multi-split air conditioners are equipped with cooling mode and dehumidification mode. In cooling mode, only the dry-bulb temperature is controlled according to the set temperature, and the humidity cannot be controlled. In dehumidification mode, only dehumidification is performed, and the range of dry-bulb temperature and relative humidity cannot be controlled.

[0003] Therefore, there is currently no technology in multi-pipe multi-split air conditioners that can simultaneously control the dry bulb temperature and relative humidity range. This results in discomfort issues such as insufficient dehumidification in cooling mode and excessively low room temperature in dehumidification mode. In addition, current multi-pipe multi-split air conditioners all require the use of humidity sensors to detect relative humidity, which increases the overall cost of the unit. Summary of the Invention

[0004] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application proposes a control method, controller, air conditioner, and medium for an air conditioner, which can simultaneously regulate the temperature and humidity of the indoor environment without the use of a humidity sensor, thereby meeting both cooling and dehumidification needs.

[0005] In a first aspect, embodiments of this application provide a method for controlling an air conditioner, including:

[0006] Receives indoor ambient temperature, set temperature, and set humidity level;

[0007] The target fan speed and fan speed of the indoor unit are determined based on the indoor ambient temperature and the set temperature, and the indoor unit is controlled to operate at the target fan speed and fan speed.

[0008] Determine the dew point temperature based on the indoor ambient temperature and the set humidity level;

[0009] The humidity control coefficient is determined based on the dew point temperature, and the energy demand baseline value of the indoor unit is adjusted using the humidity control coefficient to obtain the indoor unit's capacity requirement.

[0010] The target operating frequency of the compressor is determined based on the indoor unit's capacity requirements, and the compressor is controlled to operate at the target operating frequency.

[0011] According to some embodiments of this application, determining the target fan speed and fan speed of the indoor unit based on the indoor ambient temperature and the set temperature includes:

[0012] Calculate the first temperature difference between the indoor ambient temperature and the set temperature;

[0013] The target fan speed and fan speed of the indoor unit are determined based on the first temperature difference.

[0014] According to some embodiments of this application, determining the dew point temperature based on the indoor ambient temperature and the set humidity level includes:

[0015] Determine the first correction value based on the set humidity level;

[0016] Calculate the second temperature difference between the indoor ambient temperature and the first correction value, and use the second temperature difference as the dew point temperature.

[0017] According to some embodiments of this application, the set humidity level is determined by the following steps: adjusting the set humidity level according to the indoor ambient temperature.

[0018] According to some embodiments of this application, determining the humidity control coefficient based on the dew point temperature includes:

[0019] Obtain the evaporator coil temperature;

[0020] When the temperature of the evaporator coil is greater than the difference between the dew point temperature and the first preset threshold, the first temperature difference between the indoor ambient temperature and the set temperature is calculated, and the humidity control coefficient is determined based on the first temperature difference.

[0021] When the temperature of the evaporator coil is less than or equal to the difference between the dew point temperature and the first preset threshold, the humidity control coefficient is determined to be zero.

[0022] According to some embodiments of this application, adjusting the energy demand baseline value of the indoor unit using the humidity control coefficient to obtain the indoor unit's capacity requirement includes:

[0023] Obtain the energy requirement baseline value, indoor unit capacity coefficient, and fan speed coefficient of the indoor unit;

[0024] The indoor unit capacity requirement is determined based on the energy demand baseline value, the indoor unit capacity coefficient, the wind speed coefficient, and the humidity control coefficient.

[0025] According to some embodiments of this application, at least one of the following is included:

[0026] The energy requirement baseline value is determined by the first temperature difference between the indoor ambient temperature and the set temperature;

[0027] The indoor unit capacity coefficient is determined by the indoor unit capacity.

[0028] The wind speed coefficient is determined by the wind speed setting of the indoor unit.

[0029] According to some embodiments of this application, determining the target operating frequency of the compressor based on the indoor unit capacity requirements includes:

[0030] Obtain the outdoor unit model coefficient;

[0031] The outdoor unit capacity requirement is obtained by correcting the indoor unit capacity requirement using the outdoor unit model coefficient.

[0032] The target operating frequency of the compressor is determined based on the outdoor unit's capacity requirements.

[0033] Secondly, embodiments of this application provide a controller, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the control method for the air conditioner described in the first aspect when running the computer program.

[0034] Thirdly, embodiments of this application provide an air conditioner that includes the controller described in the second aspect above.

[0035] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions for performing the control method of an air conditioner as described in the first aspect above.

[0036] Fifthly, embodiments of this application provide a computer program product, including a computer program or computer instructions, characterized in that the computer program or computer instructions are stored in a computer-readable storage medium, a processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium, and the processor executes the computer program or computer instructions, causing the computer device to perform the air conditioner control method as described in the first aspect above.

[0037] According to the technical solution of this application embodiment, it has at least the following beneficial effects: First, this application embodiment determines the target fan speed and fan setting of the indoor unit based on the indoor ambient temperature and the set temperature, and controls the indoor unit to work at the target fan speed and fan setting to regulate the indoor ambient temperature; Second, for indoor units without a humidity sensor, this application embodiment determines the dew point temperature based on the indoor ambient temperature and the set humidity setting, which is suitable for scenarios without a humidity sensor; Next, this application embodiment also determines the humidity control coefficient based on the dew point temperature, uses the humidity control coefficient to adjust the energy demand baseline value of the indoor unit to obtain the indoor unit's capacity requirement, and determines the target operating frequency of the compressor based on the indoor unit's capacity requirement, and controls the compressor to work at the target operating frequency, thereby enabling simultaneous regulation of the temperature and humidity of multi-unit multi-split indoor units, while simultaneously meeting cooling and dehumidification needs.

[0038] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0039] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0040] Figure 1 This is a schematic diagram of an air conditioner system provided in one embodiment of this application;

[0041] Figure 2 This is a flowchart of a control method for an air conditioner provided in one embodiment of this application;

[0042] Figure 3 This is a flowchart of a control method for an air conditioner provided in another embodiment of this application;

[0043] Figure 4 This is a flowchart of a control method for an air conditioner provided in another embodiment of this application;

[0044] Figure 5 This is a flowchart of a control method for an air conditioner provided in another embodiment of this application;

[0045] Figure 6 This is a flowchart of a control method for an air conditioner provided in another embodiment of this application;

[0046] Figure 7 This is a flowchart of a control method for an air conditioner provided in another embodiment of this application;

[0047] Figure 8 This is a schematic diagram of a controller for performing a control method for an air conditioner, provided in one embodiment of this application. Detailed Implementation

[0048] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0049] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0050] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0051] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0052] In some cases, multi-unit air conditioners may have cooling and dehumidification modes. In cooling mode, only the dry-bulb temperature is adjusted according to the set temperature, and the humidity cannot be adjusted. In dehumidification mode, only dehumidification is performed, and the dry-bulb temperature and relative humidity range cannot be controlled.

[0053] Therefore, there is currently no technology in multi-pipe multi-split air conditioners that can simultaneously control the dry bulb temperature and relative humidity range. This results in discomfort issues such as insufficient dehumidification in cooling mode and excessively low room temperature in dehumidification mode. In addition, current multi-pipe multi-split air conditioners all require the use of humidity sensors to detect relative humidity, which increases the overall cost of the unit.

[0054] Based on the above, this application proposes a control method, controller, air conditioner, and medium for an air conditioner, which can simultaneously regulate the temperature and humidity of the indoor environment without the use of a humidity sensor, thereby meeting both cooling and dehumidification requirements.

[0055] The various embodiments of the air conditioner of this application will be further described below with reference to the accompanying drawings.

[0056] like Figure 1 As shown, Figure 1 This is a schematic diagram of an air conditioner system provided in one embodiment of this application.

[0057] In one embodiment, the air conditioner includes an outdoor unit 100 and an indoor unit 200, wherein the outdoor unit 100 and the indoor unit 200 are connected by a refrigerant pipeline.

[0058] In one embodiment, the outdoor unit 100 includes, but is not limited to, a compressor 110, a four-way valve 120, and an outdoor heat exchanger 130. The first port of the four-way valve 120 is connected to the exhaust port of the compressor 110, the second port is connected to one side of the indoor unit 200 through the outdoor heat exchanger 130, the third port is connected to the other side of the indoor unit 200, and the fourth port is connected to the return port of the compressor 110.

[0059] In one embodiment, the outdoor unit 100 further includes, but is not limited to, a gas-liquid separator 140, wherein the input end of the gas-liquid separator 140 is connected to the fourth port of the four-way valve 120, and the output end is connected to the return air port of the compressor 110.

[0060] In one embodiment, the number of indoor units 200 can be one or more. This application does not specifically limit the number of indoor units 200.

[0061] Based on the hardware structure of the air conditioner in the above embodiments, the following presents various embodiments of the control method of the air conditioner of this application.

[0062] like Figure 2 As shown, Figure 2 This is a flowchart of an air conditioner control method provided in one embodiment of this application; the air conditioner control method may include, but is not limited to, steps S210, S220, S230, S240 and S250.

[0063] Step S210: Receive indoor ambient temperature, set temperature, and set humidity level;

[0064] Step S220: Determine the target fan speed and fan speed of the indoor unit based on the indoor ambient temperature and the set temperature, and control the indoor unit to operate at the target fan speed and fan speed.

[0065] Step S230: Determine the dew point temperature based on the indoor ambient temperature and the set humidity level;

[0066] Step S240: Determine the humidity control coefficient based on the dew point temperature, and adjust the energy demand baseline value of the indoor unit using the humidity control coefficient to obtain the indoor unit's capacity requirement.

[0067] Step S250: Determine the target operating frequency of the compressor based on the capacity requirements of the indoor unit, and control the compressor to operate at the target operating frequency.

[0068] In one embodiment, firstly, the air conditioner determines the target fan speed and fan setting of the indoor unit based on the indoor ambient temperature and the set temperature, and controls the indoor unit to operate at the target fan speed and fan setting to regulate the indoor ambient temperature. Secondly, for indoor units without a humidity sensor, the air conditioner determines the dew point temperature based on the indoor ambient temperature and the set humidity setting, which is suitable for scenarios without a humidity sensor. Next, the air conditioner also determines the humidity control coefficient based on the dew point temperature, uses the humidity control coefficient to adjust the energy demand baseline value of the indoor unit to obtain the indoor unit's capacity requirement, and determines the target operating frequency of the compressor based on the indoor unit's capacity requirement, and controls the compressor to operate at the target operating frequency. This allows for the simultaneous regulation of the temperature and humidity of multi-unit multi-split indoor units, simultaneously meeting cooling and dehumidification needs.

[0069] In one embodiment, the humidity setting mentioned above can be a fixed humidity setting input by the user or an automatically adjustable humidity setting. This application embodiment does not specifically limit this.

[0070] In one embodiment, different humidity levels correspond to different relative humidity ranges. For example, the humidity levels can be divided into 1 to 4 levels, with the dehumidification intensity increasing sequentially from level 1 to level 4. The relative humidity range can be set to 30% to 75%. By default, the relative humidity range corresponding to level 1 is 55% to 70%, level 2 is 50% to 65%, level 3 is 45% to 60%, and level 4 is 40% to 55%.

[0071] In addition, such as Figure 3 As shown, Figure 3 This is a flowchart of an air conditioner control method provided in another embodiment of this application; regarding the determination of the target fan speed and fan speed of the indoor unit based on the indoor ambient temperature and the set temperature in step S220 above, it may include, but is not limited to, steps S310 and S320.

[0072] Step S310: Calculate the first temperature difference between the indoor ambient temperature and the set temperature;

[0073] Step S320: Determine the target fan speed and fan speed of the indoor unit based on the first temperature difference.

[0074] In one embodiment, after obtaining the indoor ambient temperature T1 and the set temperature Ts, a first temperature difference, namely T1-Ts, can be calculated between the indoor ambient temperature T1 and the set temperature Ts. Then, since different first temperature differences correspond to different wind speed levels, this embodiment of the application can determine the corresponding target wind speed level based on the first temperature difference.

[0075] In one embodiment, step S320 can be: determining the target fan speed of the indoor unit based on the temperature change trend of the indoor ambient temperature and the first temperature difference; specifically, it can include the following two cases:

[0076] In the first scenario: when the indoor ambient temperature is trending downwards, if the first temperature difference is less than the first preset temperature value, the first temperature difference and the target fan speed are positively correlated. Specifically, when the indoor ambient temperature is decreasing, the smaller the first temperature difference, the lower the target fan speed of the indoor unit; if the first temperature difference is larger, the higher the target fan speed of the indoor unit.

[0077] The second scenario: When the indoor ambient temperature is trending upwards, if the first temperature difference is greater than the second preset temperature value, the first temperature difference and the target fan speed are positively correlated. Specifically, when the indoor ambient temperature is rising, the smaller the first temperature difference, the lower the target fan speed of the indoor unit; if the first temperature difference is larger, the higher the target fan speed of the indoor unit.

[0078] In one embodiment, the second preset temperature value may be less than the first preset temperature value.

[0079] In addition, such as Figure 4 As shown, Figure 4 This is a flowchart of an air conditioner control method provided in another embodiment of this application; regarding the determination of dew point temperature based on indoor ambient temperature and set humidity level in step S230 above, it may include, but is not limited to, steps S410 and S420.

[0080] Step S410: Determine the first correction value according to the set humidity level;

[0081] Step S420: Calculate the second temperature difference between the indoor ambient temperature and the first correction value, and use the second temperature difference as the dew point temperature.

[0082] In one embodiment, different humidity levels correspond to different relative humidity ranges, and different relative humidity ranges correspond to different first correction values; that is, different humidity levels correspond to different first correction values. For example, humidity levels can be divided into 1 to 4, with dehumidification intensity increasing sequentially from level 1 to level 4. The relative humidity range can be set to 30%–75%, with the default relative humidity range being 55%–70% for level 1, 50%–65% for level 2, 45%–60% for level 3, and 40%–55% for level 4. Correspondingly, the first correction value X corresponds to x1℃, x2℃, x3℃, and x4℃ for levels 1–4, respectively, where x1 < x2 < x3 < x4.

[0083] Next, after determining the first correction value X, the second temperature difference between the indoor ambient temperature T1 and the first correction value X can be calculated, that is, the second temperature difference Trh = T1 - X, and the second temperature difference Trh is used as the dew point temperature.

[0084] In one embodiment, the humidity setting is determined by adjusting the humidity setting based on the indoor ambient temperature. Specifically, when the humidity setting is a self-regulating automatic humidity setting, the humidity setting can be automatically adjusted based on the indoor ambient temperature.

[0085] In one embodiment, when the humidity setting is set to an automatic humidity setting with self-adjustment, a target temperature range corresponding to the indoor ambient temperature is determined from multiple preset temperature ranges, and the humidity setting corresponding to the target temperature range is used as the set humidity setting. Here, one target temperature range corresponds to one humidity setting, and the higher the target temperature range, the higher the humidity setting; the lower the target temperature range, the lower the humidity setting.

[0086] In addition, such as Figure 5 As shown, Figure 5 This is a flowchart of a control method for an air conditioner provided in another embodiment of this application; regarding the determination of the humidity control coefficient based on the dew point temperature in step S240 above, it may include, but is not limited to, steps S510, S520 and S530.

[0087] Step S510: Obtain the evaporator coil temperature;

[0088] Step S520: When the evaporator coil temperature is greater than the difference between the dew point temperature and the first preset threshold, calculate the first temperature difference between the indoor ambient temperature and the set temperature, and determine the humidity control coefficient based on the first temperature difference.

[0089] Step S530: When the evaporator coil temperature is less than or equal to the difference between the dew point temperature and the first preset threshold, the humidity control coefficient is determined to be zero.

[0090] In one embodiment, after obtaining the evaporator coil temperature and dew point temperature, if the evaporator coil temperature is greater than the difference between the dew point temperature and a first preset threshold, then it is necessary to further determine the humidity control coefficient based on the first temperature difference between the indoor ambient temperature and the set temperature, wherein different first temperature differences correspond to different humidity control coefficients.

[0091] In one embodiment, when the first temperature difference is greater than a preset negative threshold, there is a negative correlation between the first temperature difference and the humidity control coefficient. Specifically, when the first temperature difference is greater than the preset negative threshold, the larger the first temperature difference, the smaller the humidity control coefficient; and the smaller the first temperature difference, the larger the humidity control coefficient.

[0092] In one embodiment, when the first temperature difference is less than or equal to a preset negative threshold, the humidity control coefficient can be zero.

[0093] In one embodiment, after obtaining the evaporator coil temperature and dew point temperature, if the evaporator coil temperature is less than or equal to the difference between the dew point temperature and a first preset threshold, then the humidity control coefficient is directly set to zero.

[0094] In addition, such as Figure 6 As shown, Figure 6 This is a flowchart of an air conditioner control method provided in another embodiment of this application; regarding the adjustment of the indoor unit's energy demand reference value by using the humidity control coefficient in step S240 above to obtain the indoor unit's capacity requirement, it may include, but is not limited to, steps S610 and S620.

[0095] Step S610: Obtain the energy demand baseline value, indoor unit capacity coefficient, and fan speed coefficient of the indoor unit;

[0096] Step S620: Determine the indoor unit capacity requirement based on the energy demand baseline value, indoor unit capacity coefficient, wind speed coefficient, and humidity control coefficient.

[0097] In one embodiment, for each indoor unit in operation, firstly, the indoor ambient temperature and set temperature corresponding to the indoor unit are obtained, a first temperature difference between the indoor ambient temperature and the set temperature is calculated, and the corresponding energy demand baseline value is determined based on the first temperature difference; then, the indoor unit's capacity is obtained, and the indoor unit's capacity coefficient is determined based on the indoor unit's capacity; next, the indoor unit's fan speed and fan speed are also obtained, and the indoor unit's fan speed coefficient is determined based on the fan speed and fan speed; finally, the indoor unit's energy demand baseline value is adjusted and corrected using the indoor unit's capacity coefficient, fan speed coefficient, and humidity control coefficient, thereby obtaining the indoor unit's capacity requirement for each indoor unit.

[0098] In one embodiment, there is a positive correlation between the indoor unit's capacity coefficient and the indoor unit's capacity. Specifically, the greater the indoor unit's capacity, the greater its capacity coefficient; conversely, the smaller the indoor unit's capacity, the smaller its capacity coefficient.

[0099] In one embodiment, there is a positive correlation between the wind speed coefficient of the indoor unit and the wind speed setting of the indoor unit. Specifically, the higher the wind speed setting of the indoor unit, the higher the wind speed coefficient of the indoor unit; and the lower the wind speed setting of the indoor unit, the lower the wind speed coefficient of the indoor unit.

[0100] In addition, such as Figure 7 As shown, Figure 7This is a flowchart of a control method for an air conditioner provided in another embodiment of this application; regarding the determination of the target operating frequency of the compressor based on the capacity requirements of the indoor unit in step S250 above, it may include, but is not limited to, steps S710, S720 and S730.

[0101] Step S710: Obtain the outdoor unit model coefficient;

[0102] Step S720: Correct the indoor unit capacity requirement using the outdoor unit model coefficient to obtain the outdoor unit capacity requirement;

[0103] Step S730: Determine the target operating frequency of the compressor based on the outdoor unit's capacity requirements.

[0104] In one embodiment, after obtaining the indoor unit capacity requirements of each indoor unit, this embodiment of the application will sum up the indoor unit capacity requirements of all indoor units, and use the outdoor unit model coefficient to correct the summation result. The corrected outdoor unit capacity requirements are rounded up to obtain the frequency level, and the compressor operates according to the target operating frequency corresponding to the frequency level.

[0105] Based on the air conditioner control methods of the above embodiments, the overall embodiments of the air conditioner control methods of this application are presented below.

[0106] In one embodiment, firstly, for the convenience of subsequent description, the following parameters are defined: T1 is the indoor ambient temperature detected by the indoor ambient temperature sensor, Ts is the set indoor temperature, T2 is the evaporator coil temperature detected by the temperature sensor in the middle of the evaporator coil, and Trh is the dew point temperature calculated corresponding to the set relative humidity range.

[0107] The logic control of this application embodiment is as follows: When the indoor unit has no humidity sensor, four humidity levels or an automatic humidity control level can be set. When one of the indoor units of a multi-unit multi-split air conditioner receives the set temperature and humidity level, it enters the temperature and humidity dual control function without a humidity sensor.

[0108] 1. For the indoor unit, its logic control is as follows:

[0109] 1.1 Upon first use of the temperature and humidity dual control function, T1, T2, and Ts are immediately detected, and TRH is calculated based on the humidity level and sent to the outdoor unit.

[0110] 1.1.1 Wherein, Trh = T1 - X, and the value of X is determined according to the set humidity level. Humidity levels are divided into 1 to 4, with dehumidification intensity increasing sequentially from level 1 to level 4. The relative humidity range can be set to [30% to 75%], with the default range being [55% to 70%] for level 1, [50% to 65%] for level 2, [45% to 60%] for level 3, and [40% to 55%] for level 4. The X value corresponds to x1℃, x2℃, x3℃, and x4℃ for levels 1 to 4, respectively. The range of x1 to x4 is 5 to 14℃, which can be 7℃, 8℃, 10℃, and 11℃ respectively.

[0111] 1.1.2 When set to automatic dehumidification, the relative humidity range will be automatically adjusted according to temperature T1, as follows:

[0112] When the indoor temperature T1 < 20℃, it will automatically adjust to level 1;

[0113] When the indoor temperature is 22℃ > T1 ≥ 20℃, it will automatically adjust to level 2;

[0114] When the indoor temperature is 26℃≥T1≥22℃, it will automatically adjust to level 3;

[0115] When the indoor temperature T1 is greater than 26℃, it will automatically adjust to level 4.

[0116] 1.2 The indoor unit operates with dual temperature and humidity control and automatic fan speed adjustment, as detailed below:

[0117] 1.2.1 The indoor unit has fan speed settings from 1 to 100%. The current operating fan speed is calculated based on the difference between T1 and Ts. 1% setting A, 20% setting B, 40% setting C, 60% setting D, 80% setting E, 100% setting F.

[0118] 1.2.2 When T1 decreases, determine the wind speed setting according to the following conditions:

[0119] When T1-Ts < 3.5℃, the wind speed drops to level 80;

[0120] When T1-Ts < 1.5℃, the wind speed drops to level 60;

[0121] When T1-Ts < 1.0℃, the wind speed drops to level 40;

[0122] When T1-Ts < 0.5℃, the wind speed drops to level 20;

[0123] When T1-Ts < 0℃, the wind speed drops to level 1;

[0124] 1.2.3. When T1 increases, determine the wind speed setting according to the following conditions:

[0125] When T1-Ts≥0℃, the wind speed increases to level 20;

[0126] When T1-Ts≥0.5℃, the wind speed increases to level 40;

[0127] When T1-Ts≥1.0℃, the wind speed increases to level 60;

[0128] When T1-Ts≥1.5℃, the wind speed increases to level 80;

[0129] When T1-Ts≥4.0℃, the wind speed increases to level 100.

[0130] 2. For the outdoor unit, the logic control is as follows:

[0131] 2.1 Capacity requirements for each indoor unit = Base energy requirement * HP * K_fan * RH

[0132] The outdoor unit sums up the calculated capacity requirements of each indoor unit (the capacity requirement of an indoor unit is 0 when it is not in use). The sum is then multiplied by the outdoor unit's model coefficient ucOutHP for correction. The corrected capacity requirement is rounded up to obtain the frequency range. The compressor operates according to the frequency value corresponding to the frequency range; for example, range 1 is 16Hz, range 2 is 18Hz, and so on up to range 30 is 98Hz.

[0133] 2.1.1 The energy requirement baseline value is determined based on the results of T1-Ts, as shown in Table 1 below:

[0134]

[0135] Table 1

[0136] 2.1.2 HP is sent from the indoor unit to the outdoor unit, and is set according to the capacity of the indoor unit. For example, 0.8 for a 20-unit indoor unit, 1.0 for a 26-unit indoor unit, and 1.2 for a 35-unit indoor unit.

[0137] 2.1.3 K_fan is sent from the indoor unit to the outdoor unit. It is set according to the indoor unit's fan speed, for example, 1.0 for 80-100% fan speed and 0.9 for 60-80% fan speed.

[0138] 2.1.4 ucOutHP is the outdoor unit model coefficient, which is fixed in the program parameters according to the characteristics of the outdoor unit before leaving the factory. It can be set to 1.8, 2.0, 3.2 or other values.

[0139] 2.2 RH is the humidity control coefficient. Indoor units that have entered the dual temperature and humidity control function need to be multiplied by this coefficient; indoor units that have not entered this dual temperature and humidity control function do not need to be multiplied by this coefficient. The outdoor unit determines the relationship between T2 and Trh every Tm_cycle control time and assigns a value to RH based on the relationship between T2 and Trh.

[0140] When T2 > Trh-3, the RH value is determined based on the result of T1-Ts, as shown in Table 2 below:

[0141] RH 1.0 1.1 1.2 1.3 1.5 0

[0142] Table 2

[0143] Additionally, when T2≤Trh-3, the RH value is 0.

[0144] Based on the above embodiments, currently there is no technology in multi-unit multi-split air conditioning systems that can simultaneously control the dry-bulb temperature and relative humidity range, resulting in discomfort problems such as insufficient dehumidification in cooling mode and excessively low room temperature in dehumidification mode. However, the control method of the embodiments of this application can simultaneously control the temperature and humidity of the indoor unit of a multi-unit multi-split air conditioning system without the use of a humidity sensor, thus simultaneously meeting the cooling and dehumidification needs.

[0145] Based on the control methods of the air conditioner in the above embodiments, the following presents various embodiments of the controller, air conditioner, computer-readable storage medium, and computer program product of this application.

[0146] like Figure 8 As shown, Figure 8 This is a schematic diagram of a controller for performing a control method for an air conditioner according to an embodiment of this application. The controller 300 implemented in this application includes: a processor 310, a memory 320, and a computer program stored in the memory 320 and executable on the processor 310, wherein... Figure 8 The example uses a processor 310 and a memory 320.

[0147] The processor 310 and the memory 320 can be connected via a bus or other means. Figure 8 Taking the example of a connection between China and Israel via a bus.

[0148] Memory 320, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory 320 may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory 320 may optionally include remotely located memories 320 relative to processor 310, which can be connected to controller 300 via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0149] Those skilled in the art will understand that Figure 8 The device structure shown does not constitute a limitation on the controller 300 and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0150] exist Figure 8 In the controller 300 shown, the processor 310 can be used to call the control program stored in the memory 320, thereby implementing the air conditioner control method described above. Specifically, the non-transitory software program and instructions required to implement the air conditioner control method of the above embodiment are stored in the memory 320. When executed by the processor 310, the air conditioner control method of the above embodiment is executed.

[0151] It is worth noting that since the controller 300 of this application embodiment can execute the air conditioner control method of any of the above embodiments, the specific implementation method and technical effects of the controller 300 of this application embodiment can be referred to the specific implementation method and technical effects of the air conditioner control method of any of the above embodiments.

[0152] Furthermore, one embodiment of this application also provides an air conditioner that includes the controller described in the above embodiment.

[0153] It is worth noting that, since the air conditioner of this application embodiment includes the controller of the above embodiments, and the controller of the above embodiments can execute the control method of the air conditioner of any of the above embodiments, the specific implementation method and technical effect of the air conditioner of this application embodiment can refer to the specific implementation method and technical effect of the control method of the air conditioner of any of the above embodiments.

[0154] Furthermore, one embodiment of this application provides a computer-readable storage medium storing computer-executable instructions for performing the aforementioned air conditioner control method. Exemplarily, the above-described method is executed... Figures 2 to 7 The methods and steps in the text.

[0155] It is worth noting that, since the computer-readable storage medium of this application embodiment can execute the air conditioner control method of any of the above embodiments, the specific implementation and technical effects of the computer-readable storage medium of this application embodiment can be referred to the specific implementation and technical effects of the air conditioner control method of any of the above embodiments.

[0156] Furthermore, one embodiment of this application also provides a computer program product, including a computer program or computer instructions, which are stored in a computer-readable storage medium. A processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium and executes the computer program or computer instructions, causing the computer device to perform the aforementioned air conditioner control method. Exemplarily, the above-described method is executed... Figures 2 to 7 The methods and steps in the text.

[0157] It is worth noting that, since the computer program product of this application embodiment can execute the air conditioner control method of any of the above embodiments, the specific implementation method and technical effect of the computer program product of this application embodiment can refer to the specific implementation method and technical effect of the air conditioner control method of any of the above embodiments.

[0158] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically include computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0159] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0160] In the several embodiments provided in this application, it should be understood that the disclosed systems, instruments, and methods can be implemented in other ways. For example, the instrument embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the shown or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between instruments or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, i.e., they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0161] It should also be understood that the various implementation methods provided in this application can be combined arbitrarily to achieve different technical effects.

[0162] The above provides a detailed description of the preferred embodiments of this application. However, this application is not limited to the above-described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A control method for an air conditioner, characterized in that, include: Receives indoor ambient temperature, set temperature, and set humidity level; The target fan speed and fan speed of the indoor unit are determined based on the indoor ambient temperature and the set temperature, and the indoor unit is controlled to operate at the target fan speed and fan speed. Determine the dew point temperature based on the indoor ambient temperature and the set humidity level; The humidity control coefficient is determined based on the dew point temperature, and the energy demand baseline value of the indoor unit is adjusted using the humidity control coefficient to obtain the indoor unit's capacity requirement. The target operating frequency of the compressor is determined based on the indoor unit's capacity requirements, and the compressor is controlled to operate at the target operating frequency.

2. The method according to claim 1, characterized in that, The step of determining the target fan speed and fan speed of the indoor unit based on the indoor ambient temperature and the set temperature includes: Calculate the first temperature difference between the indoor ambient temperature and the set temperature; The target fan speed and fan speed of the indoor unit are determined based on the first temperature difference.

3. The method according to claim 1, characterized in that, Determining the dew point temperature based on the indoor ambient temperature and the set humidity level includes: Determine the first correction value based on the set humidity level; Calculate the second temperature difference between the indoor ambient temperature and the first correction value, and use the second temperature difference as the dew point temperature.

4. The method according to claim 1 or 3, characterized in that, The set humidity level is determined by the following steps: adjusting the set humidity level according to the indoor ambient temperature.

5. The method according to claim 1, characterized in that, The step of determining the humidity control coefficient based on the dew point temperature includes: Obtain the evaporator coil temperature; When the temperature of the evaporator coil is greater than the difference between the dew point temperature and the first preset threshold, the first temperature difference between the indoor ambient temperature and the set temperature is calculated, and the humidity control coefficient is determined based on the first temperature difference. When the temperature of the evaporator coil is less than or equal to the difference between the dew point temperature and the first preset threshold, the humidity control coefficient is determined to be zero.

6. The method according to claim 1, characterized in that, The process of adjusting the energy demand baseline value of the indoor unit using the humidity control coefficient to obtain the indoor unit's capacity requirement includes: Obtain the energy requirement baseline value, indoor unit capacity coefficient, and fan speed coefficient of the indoor unit; The indoor unit capacity requirement is determined based on the energy demand baseline value, the indoor unit capacity coefficient, the wind speed coefficient, and the humidity control coefficient.

7. The method according to claim 6, characterized in that, Includes at least one of the following: The energy requirement baseline value is determined by the first temperature difference between the indoor ambient temperature and the set temperature; The indoor unit capacity coefficient is determined by the indoor unit capacity. The wind speed coefficient is determined by the wind speed setting of the indoor unit.

8. The method according to claim 1, characterized in that, Determining the target operating frequency of the compressor based on the indoor unit's capacity requirements includes: Obtain the outdoor unit model coefficient; The outdoor unit capacity requirement is obtained by correcting the indoor unit capacity requirement using the outdoor unit model coefficient. The target operating frequency of the compressor is determined based on the outdoor unit's capacity requirements.

9. A controller, characterized in that, include: The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, performs the control method for an air conditioner as described in any one of claims 1 to 8.

10. An air conditioner, characterized in that, Includes the controller as described in claim 9.

11. A computer-readable storage medium, characterized in that: The device stores computer-executable instructions for performing the control method of the air conditioner as described in any one of claims 1 to 8.

12. A computer program product, comprising a computer program or computer instructions, characterized in that, The computer program or the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer program or the computer instructions from the computer-readable storage medium and executes the computer program or the computer instructions, causing the computer device to perform the control method of the air conditioner as described in any one of claims 1 to 8.

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