Air conditioner cooling control method, air conditioner and computer-readable storage medium

Abstract

The present invention discloses an air conditioner cooling control method, an air conditioner and a computer-readable storage medium. When the user specifies personalized cooling requirements, the air conditioner cooling control method predicts the change curve of the target evaporation temperature over time according to the personalized cooling requirements and the actual total cooling load in the room, and then continuously tracks the change of the actual evaporation temperature during the air-conditioning refrigeration process, and adjusts the actual evaporation temperature by adjusting the compressor operating frequency according to the change curve, so that the actual change trend of the actual evaporation temperature can approximate the change curve, thereby enabling the indoor temperature to meet the cooling requirements, avoiding the disadvantages of roughly setting the target evaporation temperature, resulting in over-regulation of the room temperature and large fluctuations, and thus achieving the effect of precise temperature control to meet the user's personalized cooling requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly to an air-conditioning cooling control method, an air conditioner, and a computer-readable storage medium. Background Art

[0002] With the rapid development of air conditioner technology, various air conditioners have been widely used in people's daily lives. After the existing air conditioner starts refrigeration operation, it often makes the compressor run at a relatively large initial frequency for a period of time, and then adjusts the frequency according to the drop of the room temperature. However, when the user specifies a certain cooling requirement, the above cooling method cannot meet the personalized cooling needs of the user, and there may be situations such as overshooting the temperature or cooling too slowly. The above situations reflect the problem that the existing air-conditioning cooling method is difficult to accurately adjust the cooling according to the personalized needs of the user. Summary of the Invention

[0003] The main object of the present invention is to provide an air-conditioning cooling control method, an air conditioner, and a computer-readable storage medium, aiming to solve the technical problem that the existing air-conditioning cooling method is difficult to accurately adjust the cooling according to the personalized needs of the user.

[0004] To achieve the above object, the present invention provides an air-conditioning cooling control method, and the air-conditioning cooling control method includes:

[0005] After the air conditioner enters the cooling mode specified with a cooling requirement, detect the indoor temperature and the actual evaporation temperature during the operation of the air conditioner;

[0006] According to the indoor temperature and the cooling requirement, obtain the total cooling load in the current indoor environment, and predict the target evaporation temperature change curve of the air conditioner in the cooling mode based on the total cooling load;

[0007] Compare the change of the actual evaporation temperature during the operation with the change curve, and adjust the operating frequency of the compressor in the air conditioner based on the comparison result, so that the indoor temperature meets the cooling requirement.

[0008] Optionally, the cooling requirement includes the required cooling duration and the set temperature,

[0009] The step of obtaining the total cooling load in the current indoor environment according to the indoor temperature and the cooling requirement includes:

[0010] Obtain the instantaneous indoor cooling load, and obtain the indoor cooling load based on the required cooling duration;

[0011] Obtain the heat removal load to be removed based on the indoor temperature and the set temperature;

[0012] Add the indoor cooling load and the heat removal load to be removed to obtain the total cooling load for cooling.

[0013] Optionally, before the step of obtaining the total cooling load for cooling in the current indoor environment according to the indoor temperature and the cooling requirement, the method further includes:

[0014] Detect the outdoor temperature during the operation of the air conditioner;

[0015] The step of obtaining the instantaneous indoor cooling load and obtaining the indoor cooling load based on the required cooling duration includes:

[0016] Obtain the room type information, area information, and weather information corresponding to the air conditioner;

[0017] Based on the room type information, area information, weather information, indoor temperature, and outdoor temperature, obtain the instantaneous indoor cooling load;

[0018] Integrate and accumulate the instantaneous indoor cooling load over the required cooling duration to obtain the indoor cooling load.

[0019] Optionally, the step of predicting the target evaporation temperature change curve of the air conditioner in the cooling mode based on the total cooling load for cooling includes:

[0020] Construct a functional relationship between the target evaporation temperature and time by combining preset parameters and the total cooling load to predict the change curve.

[0021] Optionally, the cooling requirement includes the required cooling duration,

[0022] The step of comparing the change situation of the actual evaporation temperature during the operation with the change curve and adjusting the operating frequency of the compressor in the air conditioner based on the comparison result includes:

[0023] Compare the actual evaporation temperature with the target evaporation temperature at the corresponding moment in the change curve to obtain a first difference;

[0024] Determine the frequency correction value and action period of the operating frequency according to the first difference, and control the compressor to operate at the frequency correction value for one action period;

[0025] Return to execute the step of obtaining the first difference between the actual evaporation temperature at this time and the target evaporation temperature at the corresponding moment in the change curve until the cooling time of the air conditioner since entering the cooling mode reaches the required cooling duration.

[0026] Optionally, the cooling requirement further includes a set temperature,

[0027] The step of returning to execute obtaining a first difference between the actual evaporation temperature at this time and the target evaporation temperature at the corresponding moment in the change curve until the cooling time of the air conditioner since entering the cooling mode reaches the required cooling time includes:

[0028] When it is detected that the cooling time reaches a preset time condition, obtain a second difference between the indoor temperature and the set temperature at this time;

[0029] Determine a temperature correction value of the target evaporation temperature according to the second difference, and correct the change curve based on the temperature correction value;

[0030] Based on the corrected change curve, return to execute the step of obtaining a first difference between the actual evaporation temperature at this time and the target evaporation temperature at the corresponding moment in the change curve until the cooling time of the air conditioner since entering the cooling mode reaches the required cooling time.

[0031] Optionally, before the step of comparing the actual evaporation temperature with the target evaporation temperature at the corresponding moment in the change curve, it further includes:

[0032] Judge whether the compressor is in an operating state;

[0033] If so, execute the step of comparing the actual evaporation temperature with the target evaporation temperature at the corresponding moment in the change curve;

[0034] After the step of judging whether the compressor is in an operating state, it further includes:

[0035] If not, start the compressor, and determine an initial frequency and an initial operating duration according to the initial value of the target evaporation temperature;

[0036] Control the compressor to operate at the initial frequency for the initial operating duration;

[0037] Execute the step of obtaining a first difference between the actual evaporation temperature at this time and the target evaporation temperature at the corresponding moment in the change curve.

[0038] Optionally, after the step of adjusting the operating frequency of the compressor in the air conditioner based on the comparison result to make the indoor temperature meet the cooling requirement, it further includes:

[0039] When it is detected that the cooling time exceeds the required cooling time, repeatedly execute the step of obtaining a first difference between the actual evaporation temperature at this time and the target evaporation temperature at the corresponding moment in the change curve;

[0040] Until the cooling time reaches the sum of the required cooling time and the preset time, switch from the cooling mode to the conventional cooling control mode.

[0041] In addition, to achieve the above object, the present invention also provides an air conditioner cooling control device, which includes:

[0042] An operating temperature detection module, configured to detect the indoor temperature and the actual evaporation temperature during the operation of the air conditioner after the air conditioner enters a cooling mode where there is a specified cooling requirement.

[0043] A change curve prediction module, configured to obtain the total cooling load in the current indoor environment according to the indoor temperature and the cooling requirement, and predict the target evaporation temperature change curve of the air conditioner in the cooling mode based on the total cooling load.

[0044] An operating frequency adjustment module, configured to compare the change of the actual evaporation temperature during the operation with the change curve, and adjust the operating frequency of the compressor in the air conditioner based on the comparison result, so that the indoor temperature meets the cooling requirement.

[0045] Optionally, the cooling requirement includes the required cooling time and the set temperature.

[0046] The change curve prediction module includes:

[0047] An indoor load acquisition unit, configured to acquire the instantaneous indoor cooling load and obtain the indoor cooling load based on the required cooling time.

[0048] A heat load to be removed acquisition unit, configured to obtain the heat load to be removed based on the indoor temperature and the set temperature.

[0049] A cooling load acquisition unit, configured to add the indoor cooling load and the heat load to be removed to obtain the total cooling load.

[0050] Optionally, the air conditioner cooling control device further includes:

[0051] Detect the outdoor temperature during the operation of the air conditioner.

[0052] The indoor load acquisition unit is used for:

[0053] Obtain the room type information, area information, and weather information corresponding to the air conditioner.

[0054] Based on the room type information, area information, weather information, indoor temperature, and outdoor temperature, obtain the instantaneous indoor cooling load.

[0055] Integrate and accumulate the instantaneous indoor cooling load with respect to the required cooling time to obtain the indoor cooling load.

[0056] Optionally, the change curve prediction module includes:

[0057] A change curve prediction unit, configured to construct a functional relationship between the target evaporation temperature and time by combining preset parameters and the total cooling load, so as to predict the change curve.

[0058] Optionally, the cooling demand includes the required duration of cooling,

[0059] The operating frequency adjustment module includes:

[0060] A first difference acquisition unit, configured to compare the actual evaporation temperature with the target evaporation temperature at the corresponding moment in the change curve to obtain a first difference;

[0061] An operating frequency correction unit, configured to determine a frequency correction value and an action period of the operating frequency according to the first difference, and control the compressor to operate for one action period according to the frequency correction value;

[0062] A control return execution unit, configured to return to execute the step of obtaining the first difference between the actual evaporation temperature and the target evaporation temperature at the corresponding moment in the change curve until the cooling time of the air conditioner after entering the cooling mode reaches the required duration of cooling.

[0063] Optionally, the cooling demand further includes a set temperature,

[0064] The control return execution unit is further configured to:

[0065] When detecting that the cooling time reaches a preset time condition, obtain a second difference between the indoor temperature and the set temperature at this time;

[0066] Determine a temperature correction value of the target evaporation temperature according to the second difference, and correct the change curve based on the temperature correction value;

[0067] Based on the corrected change curve, return to execute the step of obtaining the first difference between the actual evaporation temperature and the target evaporation temperature at the corresponding moment in the change curve until the cooling time of the air conditioner after entering the cooling mode reaches the required duration of cooling.

[0068] Optionally, the operating frequency adjustment module includes:

[0069] An operating state judgment unit, configured to judge whether the compressor is in an operating state;

[0070] An operating state determination unit, configured to, if so, execute the step of comparing the actual evaporation temperature with the target evaporation temperature at the corresponding moment in the variation curve;

[0071] An initial frequency determination unit, configured to, if not, start the compressor and determine an initial frequency and an initial operation duration according to the initial value of the target evaporation temperature;

[0072] An initial frequency operation unit, configured to control the compressor to operate at the initial frequency for the initial operation duration;

[0073] A control flow entry unit, configured to execute the step of obtaining a first difference between the actual evaporation temperature at this time and the target evaporation temperature at the corresponding moment in the variation curve.

[0074] Optionally, the air conditioner cooling control device further includes:

[0075] A control continuous execution unit, configured to, when it is detected that the cooling time exceeds the required cooling time, repeatedly execute the step of obtaining a first difference between the actual evaporation temperature at this time and the target evaporation temperature at the corresponding moment in the variation curve;

[0076] A normal mode switching unit, configured to switch from the cooling mode to the normal cooling control mode until the cooling time reaches the sum of the required cooling time and a preset time.

[0077] In addition, to achieve the above object, the present invention further provides an air conditioner, which includes: a memory, a processor, and an air conditioner cooling control program stored on the memory and executable on the processor. When the air conditioner cooling control program is executed by the processor, the steps of the air conditioner cooling control method as described above are implemented.

[0078] In addition, to achieve the above object, the present invention further provides a computer-readable storage medium, on which an air conditioner cooling control program is stored. When the air conditioner cooling control program is executed by a processor, the steps of the air conditioner cooling control method as described above are implemented.

[0079] In addition, to achieve the above object, the present invention further provides a computer program product, including a computer program. When the computer program is executed by a processor, the steps of the air conditioner cooling control method as described above are implemented.

[0080] The present invention provides an air conditioner cooling control method, an air conditioner, and a computer-readable storage medium. When the user specifies personalized cooling requirements, the air conditioner cooling control method predicts the change curve of the target evaporation temperature over time according to the personalized cooling requirements and the actual total cooling load in the room, and then continuously tracks the change of the actual evaporation temperature during the air conditioner refrigeration process, and adjusts the actual evaporation temperature by adjusting the compressor operating frequency according to the change curve, so that the actual change trend of the actual evaporation temperature can approach the change curve, so that the indoor temperature can meet the cooling requirements, avoiding the disadvantages of roughly setting the target evaporation temperature, resulting in over-regulation of the room temperature and large fluctuations, etc., so as to achieve the effect of precise temperature control to meet the user's personalized cooling requirements, and solve the technical problem that the existing air conditioner cooling method is difficult to accurately cool and adjust according to the user's personalized needs. Brief Description of the Drawings

[0081] Figure 1 is a schematic structural diagram of an air conditioner in the hardware operating environment involved in the embodiment of the present invention;

[0082] Figure 2 is a schematic flowchart of the first embodiment of the air conditioner cooling control method of the present invention;

[0083] Figure 3 is a schematic flowchart of a specific embodiment in the second embodiment of the air conditioner cooling control method of the present invention;

[0084] Figure 4 is a schematic flowchart of a specific embodiment in the third embodiment of the air conditioner cooling control method of the present invention;

[0085] Figure 5 is a schematic diagram of the functional modules of the air conditioner cooling control device of the present invention.

[0086] The realization, functional characteristics, and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiment

[0087] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0088] With the rapid development of air conditioner technology, various air conditioners have been widely used in people's daily lives. After the existing air conditioner starts refrigeration operation, it often makes the compressor run at a relatively large initial frequency for a period of time, and then adjusts the frequency according to the drop of the room temperature. However, when the user specifies certain cooling requirements, the above cooling method cannot meet the user's personalized cooling requirements, and there may be situations such as overshooting the temperature or cooling too slowly. The above situation reflects the problem that the existing air conditioner cooling method is difficult to accurately cool and adjust according to the user's personalized needs.

[0089] To solve the above technical problems, the present invention provides an air-conditioning cooling control method. That is, when a user specifies personalized cooling requirements, according to the personalized cooling requirements and the actual total cooling load in the room, the change curve of the target evaporation temperature over time is predicted. Then, continuously track the change of the actual evaporation temperature during the air-conditioning refrigeration process, and adjust the actual evaporation temperature by adjusting the compressor operating frequency according to the change curve, so that the actual change trend of the actual evaporation temperature can approach the change curve, thereby enabling the indoor temperature to meet the cooling requirements, avoiding the disadvantages of roughly setting the target evaporation temperature, resulting in over-regulation of the room temperature and large fluctuations, and thus achieving the effect of precise temperature control to meet the user's personalized cooling requirements, and solving the technical problem that the existing air-conditioning cooling methods are difficult to accurately adjust the cooling according to the user's personalized needs.

[0090] As Figure 1 shown, Figure 1 is a schematic diagram of the structure of an air conditioner in the hardware operating environment involved in the embodiment of the present invention.

[0091] As Figure 1 shown, the air conditioner may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. Optionally, the user interface 1003 may include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory). Optionally, the memory 1005 may also be a storage air conditioner independent of the aforementioned processor 1001.

[0092] Optionally, the air conditioner may further include an RF (RadioFrequency) circuit, sensors, etc. Among them, the sensors such as infrared sensors, air pressure sensors, temperature sensors, humidity sensors, and other sensors. Of course, the air conditioner may also be configured with other sensors such as gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, which will not be elaborated here.

[0093] Those skilled in the art can understand that Figure 1 the structure of the air conditioner shown in

[0094] As Figure 1As shown in the figure, the memory 1005, which is a computer storage medium, may include an operating system, a network communication module, a user interface module, and an air conditioner cooling control program.

[0095] In Figure 1 In the air conditioner shown in the figure, the network interface 1004 is mainly used to connect to the background server and communicate with the background server for data; the user interface 1003 is mainly used to connect to the client (user side) and communicate with the client for data; and the processor 1001 can be used to call the air conditioner cooling control program stored in the memory 1005 and execute the operations in the following air conditioner cooling control method.

[0096] Based on the above hardware structure, various embodiments of the air conditioner cooling control method of the present invention are proposed.

[0097] Referring to Figure 2 , Figure 2 It is a schematic flowchart of the first embodiment of the air conditioner cooling control method.

[0098] The first embodiment of the present invention provides an air conditioner cooling control method, and the air conditioner cooling control method includes the following steps:

[0099] Step S10, after the air conditioner enters the cooling mode with a specified cooling requirement, detect the indoor temperature and the actual evaporation temperature of the air conditioner during operation;

[0100] In this embodiment, the present invention is applied to an air conditioner system, and the air conditioner system can be various different types of air conditioner systems, such as a multi-split air conditioner system, a split air conditioner system, etc. The cooling requirement refers to one or more of the cooling requirements specified by the user, such as the required cooling duration, the set temperature, etc. The indoor temperature refers to the indoor environmental temperature of the room where the air conditioner is located. The actual evaporation temperature refers to the evaporation temperature of the heat exchanger in the air conditioner, and various different acquisition methods can be adopted, and this embodiment does not limit this.

[0101] The air conditioner system can either enter the above cooling mode when starting up, or enter the above cooling mode after running for a period of time in other modes such as the conventional heating mode or the conventional cooling mode after starting up, and is specifically determined according to the instructions issued by the user to the air conditioner.

[0102] Since existing air - conditioning systems often run at a relatively large initial frequency for a period of time after starting the cooling operation, and then adjust the frequency according to the drop in room temperature, the cooling rate cannot be accurately adjusted according to the actual needs of the room or the user's needs, resulting in situations such as over - temperature adjustment or too slow cooling. Therefore, this embodiment provides an air - conditioning control method with a variable evaporation temperature, aiming to accurately and quickly meet the cooling requirements according to the actual heat load of the room and the user's personalized needs. Variable target evaporation temperature control refers to determining the target evaporation temperature according to the instantaneous capacity demand, adjusting the compressor frequency to make the actual evaporation temperature approach the target evaporation temperature, and realizing the adjustment of the cooling capacity of the indoor unit by changing the heat transfer temperature difference between the refrigerant and the air.

[0103] Specifically, when the user sends a startup command containing a cooling requirement to the air - conditioner at home through a mobile phone, when the air - conditioning system receives this command, it starts up and obtains that the cooling requirement in the command is to cool down to 25 degrees within 15 minutes. The air - conditioning system starts monitoring the indoor environmental temperature and the actual evaporation temperature from the moment of startup.

[0104] Step S20: According to the indoor temperature and the cooling requirement, obtain the total cooling load in the current indoor environment, and predict the change curve of the target evaporation temperature of the air - conditioner in the cooling mode based on the total cooling load.

[0105] In this embodiment, the total cooling load refers to the value of the cooling capacity demand required to cool the indoor environment where the air - conditioner is located at the current moment from the current indoor environmental temperature to a certain temperature. The target evaporation temperature refers to the ideal value of the actual evaporation temperature. The change curve refers to the curve showing how the target evaporation temperature should change over time in order to cool the current indoor environmental temperature to a certain temperature, considering the actual indoor environment where the air - conditioner is located, which reflects the change trend of the target evaporation temperature during a period of time starting from the initial moment. The specific change trend can be: the target evaporation temperature is initially at a relatively low value, then gradually increases as the room cools down, and finally tends to a stable value.

[0106] Specifically, the air - conditioning system calculates the total cooling load in the room at the current moment according to the indoor temperature at the current moment of startup, the duration required for cooling specified by the user, and a certain set temperature, using a pre - stored calculation method. Then, according to the pre - stored calculation method, it predicts the change curve of the target evaporation temperature over time through the total cooling load (by controlling the change trend of the actual evaporation temperature to approach this curve, the user - specified cooling requirement can be met).

[0107] Step S30: Compare the change situation of the actual evaporation temperature during operation with the change curve, and adjust the operating frequency of the compressor in the air - conditioner based on the comparison result, so that the indoor temperature meets the cooling requirement.

[0108] In this embodiment, since the air conditioning system needs to control the change of the actual evaporation temperature within the required cooling duration to approximate the change curve, it is necessary to continuously monitor the change of the actual evaporation temperature. Once the change of the actual evaporation temperature deviates, it is necessary to adjust the actual evaporation temperature by adjusting the operating frequency of the compressor. After adjustment, continue to monitor whether the change trend of the actual evaporation temperature fits the change curve until the current cooling demand is met. It can continue to maintain this cooling mode for a period of time, or directly end the above cooling mode and enter other modes.

[0109] In addition, it should be noted that for the adjustment method of the actual evaporation temperature, in addition to the above method of changing the operating frequency of the compressor, a control method of changing the air volume of the indoor fan can also be adopted. (It can be controlled by the rotation speed). For the specific value of the rotation speed of the indoor fan, the air conditioning system can determine it according to the target evaporation temperature. The specific determination method can refer to the determination method of the above compressor operating frequency, or other methods. In the actual implementation process, the compressor operating frequency control method or the indoor fan air volume control method can be adopted alone, or the two methods can be combined to adjust the actual evaporation temperature.

[0110] In this embodiment, when the user specifies personalized cooling requirements, the change curve of the target evaporation temperature over time is predicted according to the personalized cooling requirements and the actual total cooling load in the room. Then, continuously track the change of the actual evaporation temperature during the air conditioning refrigeration process, and adjust the actual evaporation temperature by adjusting the compressor operating frequency according to the change curve, so that the actual change trend of the actual evaporation temperature can approximate the change curve, so that the indoor temperature can meet the cooling requirements, avoiding the disadvantages of rough setting of the target evaporation temperature, such as over-regulation of the room temperature and large fluctuations, thus achieving the effect of precise temperature control to meet the user's personalized cooling requirements, and solving the technical problem that the existing air conditioning cooling method is difficult to accurately cool and adjust according to the user's personalized needs.

[0111] Furthermore, based on the above Figure 2 shown in the first embodiment, a second embodiment of the air conditioning cooling control method of the present invention is proposed. In this embodiment, the above cooling requirements may include the required cooling duration and the set temperature, and step S20 includes:

[0112] Step S21, obtaining the indoor instantaneous cooling load and obtaining the indoor cooling load based on the required cooling duration;

[0113] Step S22, obtaining the heat removal load to be removed based on the indoor temperature and the set temperature;

[0114] Step S23, adding the indoor cooling load and the heat removal load to be removed to obtain the total cooling load for cooling.

[0115] In this embodiment, the set temperature refers to the ideal indoor temperature specified by the user. The time required for cooling refers to the time required for the air conditioner to cool the indoor temperature to the set temperature since it enters the cooling mode. The specific scenario for setting the cooling mode can be as follows: The user expects to arrive home in 10 minutes, so it is set to cool to 26 degrees in 10 minutes. Among them, 10 minutes is the above-mentioned time required for cooling, and 26 degrees is the above-mentioned set temperature. In addition, in the same cooling mode, multiple cooling durations and multiple set temperatures can be included. For example, it can be set to cool to 26 degrees in 10 minutes and to 22 degrees in 15 minutes. The instantaneous indoor cooling load refers to the amount of heat that needs to be removed from the room to maintain the indoor environmental temperature at a certain moment; the heat to be removed load refers to the cooling load formed by the sensible heat that needs to be removed to reduce the indoor environmental temperature at a certain moment to the set temperature of the indoor unit. There are three ways to obtain the instantaneous indoor cooling load: First, query the database to obtain it. The air conditioning system can obtain the instantaneous indoor cooling load (including the accumulation of roof load, exterior wall load, window heat transfer load, window solar radiation load, etc.) by querying the database in combination with the room type, orientation, and regional information; Second, the system uses the default value. The air conditioning system can directly use the default value of the instantaneous indoor cooling load with universality or corresponding to the current time period (such as one month) as the current instantaneous indoor cooling load; Third, calculate it according to a specific formula. The user can input room-related information, orientation, window area, regional information, etc. and send it to the air conditioning system. The air conditioning system calculates the instantaneous cooling load of the room based on this and by obtaining the current weather information of the region through a preset formula.

[0116] The indoor cooling load is calculated from the instantaneous indoor cooling load and the time required for cooling; the heat to be removed load is calculated based on the indoor temperature and the set temperature; and the total cooling load for cooling is the sum of the indoor cooling load and the heat to be removed load.

[0117] As a specific calculation method for the heat to be removed load.

[0118] If Q sensible represents the sensible heat load to be removed, with the unit of kW, T1 represents the indoor environmental temperature, and T s represents the set temperature, then the calculation formula is:

[0119]

[0120] Among them, m represents the mass of air in the standard room, with the unit of kg; C p represents the specific heat capacity of air in the standard room, usually taking 1.005 kJ / (kg·k); τ represents the time constant, usually taking 100 s.

[0121] Furthermore, before step S20, it also includes:

[0122] Detect the outdoor temperature during the operation of the air conditioner;

[0123] Step S21 includes:

[0124] Step S211, obtain the room type information, regional information, and weather information corresponding to the air conditioner;

[0125] Step S212, based on the room type information, regional information, weather information, indoor temperature, and outdoor temperature, obtain the indoor instantaneous cooling load;

[0126] Step S213, integrate and accumulate the indoor instantaneous cooling load with respect to the required cooling time to obtain the indoor cooling load.

[0127] In this embodiment, the room type information may specifically include the room layout information and the room orientation information, where the room layout information may further include one or more of the room area, window area, wall area, etc.

[0128] The regional information refers to the information of the region where the air conditioner is located. Taking the Chinese region as an example, the regional information may be the northern region, the southern region, or the South China region, the Central China region, etc. The regional division standard can be flexibly set according to actual needs. The weather information refers to the current weather information of the environment where the air conditioner is located, and specifically may be sunny, cloudy, rainy, etc.

[0129] The user can manually send the room layout information, orientation, window area, regional information, etc. to the air conditioner system. Based on this, the air conditioner system obtains the current weather information of this region. In addition, it can also combine the indoor environmental temperature and the outdoor environmental temperature, and calculate the instantaneous cooling load of this room through a preset formula. Finally, the air conditioner system integrates and accumulates the value of the calculated instantaneous cooling load with respect to the value of the required cooling time, and then the indoor cooling load corresponding to the above-mentioned required cooling time can be obtained.

[0130] Further, step S20 includes:

[0131] Step S24, combine the preset parameters with the total cooling load to construct the functional relationship between the target evaporation temperature and time, so as to predict the change curve.

[0132] In this embodiment, the functional relationship between the target evaporation temperature and time can be constructed based on the preset parameters and the total cooling load, and can also be constructed based on parameters such as the cooling time, the initial room temperature, and the indoor fan speed.

[0133] For the function expression of the above change curve, as a specific implementation manner, if Q0 represents the above-mentioned total cooling load, and T0 represents the indoor environmental temperature at the initial moment when the air conditioner system enters the above-mentioned cooling mode, then the expression of the change curve is as follows:

[0134] T e,target = -a0Q0t 3 + bQ0t 2 - ct + dT0,

[0135] Wherein, the preset parameters a, b, c, and d are positive coefficients after experimental calibration, t is the time when entering the target evaporation temperature control, and the unit is min.

[0136] As another specific embodiment, also use Q0 to represent the total cooling load for the above-mentioned cooling, T0 to represent the indoor ambient temperature at the initial moment when the air-conditioning system enters the above-mentioned cooling mode, and add the internal fan speed V fan to this item, then the function expression can be:

[0137] T e,target = -a0Q0t 3 + bQ0t 2 - ct + dT0 + eV fan

[0138] Wherein the preset parameters a, b, c, d, and e are positive coefficients after experimental calibration, t is the time when entering the target evaporation temperature control, and the unit is min. According to this expression, as time t increases, the change trend of the target evaporation temperature is: first, a relatively low initial value, then gradually increases as the room cools down, and finally tends to a stable value. Then, based on the control of the compressor frequency (which can also be combined with the internal fan speed), the air-conditioning system can cool down to the set temperature within the above-mentioned cooling required duration and stabilize at the set temperature.

[0139] As a specific example, as Figure 3 shown, Figure 3It is a schematic diagram of the control flow for this specific embodiment. When the air-conditioning system receives an instruction to enter the cooling mode (this instruction can be issued by the user based on a remote control, mobile phone APP, etc., or the system automatically initiates it according to a preset program), based on this instruction to enter the cooling mode, determine the required cooling time (i.e., the cooling time in the figure) ΔT and the set temperature Ts (i.e., the target room temperature in the figure) in the cooling mode target, and enter the current cooling mode specified with the cooling time and set temperature. The air-conditioning system continuously detects the outdoor ambient temperature T4, and obtains the room type information (one or more of room area information, window area information, wall area information, orientation information, etc.), regional information, and weather information of the room where the indoor unit is currently located, and obtains the corresponding hourly cooling load of the room (i.e., the above-mentioned indoor instantaneous cooling load) by querying the database, and calculates the sensible heat load to be removed. The air-conditioning system calculates the total cooling load Q0 for cooling by combining the required cooling duration, hourly cooling load, and sensible heat load to be removed, and then determines the change curve of the target evaporation temperature based on the total cooling load for cooling. The air-conditioning system controls the operating frequency of the compressor according to the target evaporation temperature in the curve. During the control process, if the cooling time reaches the cooling time ΔT, continue the current control method for a duration of ΔT2, and then resume normal regulation; if the current cooling time has not reached the cooling time ΔT, continue to perform cooling control according to the target evaporation temperature.

[0140] Further, based on the above Figure 2 shown in the first embodiment, a third embodiment of the air-conditioning cooling control method of the present invention is proposed. In this embodiment, the above-mentioned cooling requirement may include the required cooling duration, and step S30 includes:

[0141] Step S31, compare the actual evaporation temperature with the target evaporation temperature at the corresponding moment in the change curve to obtain a first difference;

[0142] Step S32, determine the frequency correction value and action period of the operating frequency according to the first difference, and control the compressor to operate for one action period according to the frequency correction value;

[0143] Step S33, return to execute the step of obtaining the first difference between the actual evaporation temperature at this time and the target evaporation temperature at the corresponding moment in the change curve until the cooling time after the air conditioner enters the cooling mode reaches the required cooling duration.

[0144] In this embodiment, the first difference refers to the difference between the actual evaporation temperature at the current moment and the target evaporation temperature value at the current moment in the above-mentioned change curve each time.

[0145] After determining the change curve, the air conditioning system needs to first determine the operating state of the compressor. If the compressor is already turned on at this time, obtain the first difference between the actual evaporation temperature at this time and the target evaporation temperature value at the corresponding moment in the above change curve, look up the table according to the first difference obtained from this comparison to adjust the operating frequency of the compressor, and after running for one action cycle, continue to judge the new first difference to continue adjusting the operating frequency of the compressor.

[0146] As a specific embodiment, as shown in Table 1:

[0147] Condition (°C) X < -A -A ≤ X < -B -B ≤ X < -1 -1≤X＜1 1 ≤ X < B B ≤ X < A X ≥ A Frequency adjustment (Hz) -3 -2 -1 0 +1 +3 +4 Action period (s) 30 60 120 180 120 90 60

[0148] Both A and B in the table are positive numbers, with the unit of °C, and can be flexibly set according to actual needs.

[0149] Taking the conditions in the first column and the fourth column as an example, if the first difference X < -A at this time, the air conditioning system controls the operating frequency of the compressor to decrease by 3 Hz and operates at the decreased operating frequency of 3 Hz for 30 s. If the first difference at this time is greater than or equal to -1 and less than or equal to 1, it means that the actual evaporation temperature at this time is close to the corresponding target evaporation temperature, and no adjustment is required. Run at the current operating frequency for 180 s first and then obtain a new first difference. Other situations can be deduced by analogy, and this embodiment will not elaborate on this.

[0150] Furthermore, the above cooling requirement may also include a set temperature.

[0151] Step S33 includes:

[0152] Step S331, when it is detected that the cooling time reaches the preset time condition, obtain the second difference between the indoor temperature and the set temperature at this time;

[0153] Step S332, determine the temperature correction value of the target evaporation temperature according to the second difference, and correct the change curve based on the temperature correction value;

[0154] Step S333, based on the corrected change curve, return to execute the step of obtaining the first difference between the actual evaporation temperature at this time and the target evaporation temperature at the corresponding moment in the change curve until the cooling time of the air conditioner after entering the cooling mode reaches the required cooling duration.

[0155] In this embodiment, the second difference refers to the difference between the current indoor environment temperature and the set temperature. The preset time condition refers to the time condition near the end time of the required cooling time. Usually, it is set that the cooling time of the air conditioning system is only a relatively short period away from the required cooling time, such as 5 minutes, etc.

[0156] The air conditioning system repeats the above control process of adjusting the operating frequency of the compressor through the first difference. Until the current cooling time is approaching the required cooling time, if there is still a large gap between the current indoor environmental temperature and the set temperature at this time, it is necessary to adjust the change curve according to the second difference at this time. The purpose is to avoid too large a gap between the room temperature drop and the target temperature drop when approaching the established time due to the actual deviation, so as to make a correction.

[0157] The specific correction method is shown in the following table:

[0158] Condition (°C) X < -A -A ≤ X < -B -B ≤ X < -1 -1≤Y＜1 1 ≤ X < B B ≤ X < A X ≥ A Te_target (°C) +3 +2 +1 0 -1 -2 -3

[0159] Both A and B in the table are positive numbers and can be flexibly set according to actual needs.

[0160] Taking the conditions in the first column, the fourth column and the sixth column as examples for illustration, if the second difference X < -A at this time, the air conditioning system controls the entire change curve to move up by 3 degrees Celsius, and performs cooling control with the shifted change curve until the current cooling time reaches the above-mentioned required cooling time; if the second difference is greater than or equal to -1 and less than or equal to 1 at this time, the air conditioning system does not need to adjust the change curve and still performs cooling control with the original change curve until the current cooling time reaches the above-mentioned required cooling time. If the second difference X ≥ A at this time, the air conditioning system controls the entire change curve to move down by 3 degrees Celsius, and performs cooling control with the shifted change curve until the current cooling time reaches the above-mentioned required cooling time. Other situations can be deduced by analogy, and this embodiment will not elaborate on this.

[0161] As another specific implementation manner, since the remaining time until the end of the required cooling time is short at this time, in addition to the method of correcting the entire change curve, a new target evaporation temperature value can also be determined according to the second difference as a fixed target evaporation temperature value, and the operating frequency of the compressor (and the internal fan speed can also be determined therefrom) can be determined with this new target evaporation temperature value as the fixed ideal value of the actual evaporation temperature for cooling control in the remaining time.

[0162] Further, before step S31, it further includes:

[0163] Step A1, determining whether the compressor is in an operating state;

[0164] Step A2, if so, performing the step of comparing the actual evaporation temperature with the target evaporation temperature at the corresponding moment in the change curve;

[0165] After step A1, it further includes:

[0166] Step A3, if not, start the compressor and determine the initial frequency and initial operation duration according to the initial value of the target evaporation temperature;

[0167] Step A4, control the compressor to operate at the initial frequency for the initial operation duration;

[0168] Step A5, perform the step of obtaining the first difference between the actual evaporation temperature at this time and the target evaporation temperature at the corresponding moment in the change curve.

[0169] In this embodiment, if the air-conditioning system determines that the compressor has not been started at this time, an initial frequency F0 = k0 * Te0 is given according to the initial value of the target evaporation temperature at the initial moment, and the initial operation duration Δt0 is run, where k0 represents the calibration coefficient, and the value range is usually between 2 and 15. Different models of air conditioners can take different values, and Te0 refers to the above initial value. After the air-conditioning system controls the compressor to operate at F0 for Δt0, it can enter the control process of the target evaporation temperature.

[0170] As a specific embodiment, as Figure 4 shown, Figure 4 is the schematic diagram of the control process of this specific embodiment. For the process of specifically controlling the temperature reduction according to the target evaporation temperature, when the air-conditioning system first enters the cooling mode specified with the required cooling duration and the set temperature, it is necessary to judge the operation mode of the compressor. If the air-conditioning system determines that the compressor has not been started at this time, the compressor needs to be started first, and an initial frequency F0 (which can be specifically obtained by looking up a table) is given according to Te0. The air-conditioning system first controls the compressor to operate at this initial frequency for an initial operation duration Δt0, and then enters the subsequent control process.

[0171] If the compressor has been started at this time, then detect the first difference X between the actual evaporation temperature of the indoor unit heat exchanger at this time and the target evaporation temperature at the corresponding moment in the curve. Query the pre-stored mapping table of the difference and the frequency correction value according to the first difference X to obtain the correction value of the operating frequency of the compressor, and the specific duration of the action cycle corresponding to this first difference X, so as to adjust the current operating frequency of the compressor according to this correction value, and then control the compressor to operate at the adjusted operating frequency for a corresponding action cycle. After the compressor finishes operating for one action cycle, the air-conditioning system obtains a new round of the first difference X, and enters a new round of adjustment of the compressor operating frequency based on the new round of the first difference X, and so on, until it is detected that the current cooling time consumption differs from the cooling time ΔT by less than Δt0, calculate the second difference Y between the actual room temperature T1 and the set temperature Ts at this time, query the pre-stored mapping table of the difference and the temperature correction value according to the second difference Y to obtain the correction value for the target evaporation temperature, correct the entire change curve of the target evaporation temperature based on this correction value, and then perform cooling control based on the target evaporation temperature at the corresponding moment in the corrected change curve.

[0172] Further, after step S30, it further includes:

[0173] Step S40, when it is detected that the cooling time consumption exceeds the required cooling duration, repeat the step of obtaining the first difference between the actual evaporation temperature at this time and the target evaporation temperature at the corresponding moment in the change curve;

[0174] Step S50, until the cooling time consumption reaches the sum of the required cooling duration and the preset duration, switch from the cooling mode to the conventional cooling control mode.

[0175] In this embodiment, the preset duration can be flexibly set according to actual needs, and usually can be set to 1 to 10 minutes. After the air-conditioning system exceeds the cooling demand time, it can also continue to maintain the above-mentioned target evaporation temperature control method, and after continuing for the preset duration Δt2, it returns to the normal regulation of the air conditioner.

[0176] As Figure 5 shown, the present invention also provides an air-conditioning cooling control device, and the air-conditioning cooling control device includes:

[0177] An operating temperature detection module 10, configured to detect the indoor temperature and the actual evaporation temperature during the operation of the air conditioner after the air conditioner enters a cooling mode with a specified cooling demand;

[0178] A change curve prediction module 20, configured to obtain the total cooling load in the current indoor environment according to the indoor temperature and the cooling demand, and predict the target evaporation temperature change curve of the air conditioner in the cooling mode based on the total cooling load;

[0179] The operating frequency adjustment module 30 is configured to compare the variation of the actual evaporation temperature during operation with the variation curve, and adjust the operating frequency of the compressor in the air conditioner based on the comparison result, so that the indoor temperature meets the cooling requirement.

[0180] The present invention also provides an air conditioner.

[0181] The air conditioner includes a processor, a memory, and an air conditioner cooling control program stored on the memory and executable on the processor. When the air conditioner cooling control program is executed by the processor, the steps of the air conditioner cooling control method described above are implemented.

[0182] Wherein, the method implemented when the air conditioner cooling control program is executed can refer to the various embodiments of the air conditioner cooling control method of the present invention, which will not be elaborated here.

[0183] The present invention also provides a computer-readable storage medium.

[0184] An air conditioner cooling control program is stored on the computer-readable storage medium of the present invention. When the air conditioner cooling control program is executed by a processor, the steps of the air conditioner cooling control method described above are implemented.

[0185] Wherein, the method implemented when the air conditioner cooling control program is executed can refer to the various embodiments of the air conditioner cooling control method of the present invention, which will not be elaborated here.

[0186] The present invention also provides a computer program product, including a computer program. When the computer program is executed by a processor, the steps of the air conditioner cooling control method described above are implemented.

[0187] Wherein, the method implemented when the computer program is executed can refer to the various embodiments of the air conditioner cooling control method of the present invention, which will not be elaborated here.

[0188] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity / operation / object from another entity / operation / object, and do not necessarily require or imply any actual relationship or order between these entities / operations / objects; terms such as "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or system including such element. For the device embodiments, since they are basically similar to the method embodiments, they are described relatively simply, and for the relevant parts, reference may be made to the partial description of the method embodiments. The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated. Some or all of the modules in the can be selected according to actual needs to achieve the purpose of the solution of the present invention. Those of ordinary skill in the art can understand and implement it without creative effort.

[0189] The serial numbers of the above embodiments of the present invention are only for description and do not represent the superiority or inferiority of the embodiments.

[0190] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disc) as described above and includes several instructions to enable an air conditioner to execute the methods described in various embodiments of the present invention.

[0191] The above are only partial embodiments of the present invention and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. An air conditioner cooling control method, characterized in that, The air conditioner cooling control method includes: After the air conditioner enters the cooling mode with specified cooling requirements, detecting the indoor temperature and the actual evaporation temperature during the operation of the air conditioner; According to the indoor temperature and the cooling requirements, obtaining the total cooling load in the current indoor environment, and predicting the target evaporation temperature change curve of the air conditioner in the cooling mode based on the total cooling load; Comparing the change situation of the actual evaporation temperature during the operation with the change curve, and adjusting the operating frequency of the compressor in the air conditioner based on the comparison result so that the indoor temperature meets the cooling requirements; The cooling requirements include the required cooling duration. The step of comparing the change situation of the actual evaporation temperature during the operation with the change curve and adjusting the operating frequency of the compressor in the air conditioner based on the comparison result includes: comparing the actual evaporation temperature with the target evaporation temperature at the corresponding moment in the change curve to obtain a first difference; determining a frequency correction value and an action period of the operating frequency according to the first difference, and controlling the compressor to operate at the frequency correction value for one action period; returning to execute the step of obtaining the first difference between the actual evaporation temperature and the target evaporation temperature at the corresponding moment in the change curve until the cooling time of the air conditioner after entering the cooling mode reaches the required cooling duration; The cooling requirements further include a set temperature. The step of returning to execute the step of obtaining the first difference between the actual evaporation temperature and the target evaporation temperature at the corresponding moment in the change curve until the cooling time of the air conditioner after entering the cooling mode reaches the required cooling duration includes: when it is detected that the cooling time reaches a preset time condition, obtaining a second difference between the indoor temperature and the set temperature at this time; determining a temperature correction value of the target evaporation temperature according to the second difference, and correcting the change curve based on the temperature correction value; based on the corrected change curve, returning to execute the step of obtaining the first difference between the actual evaporation temperature and the target evaporation temperature at the corresponding moment in the change curve until the cooling time of the air conditioner after entering the cooling mode reaches the required cooling duration; Before the step of comparing the actual evaporation temperature with the target evaporation temperature at the corresponding moment in the change curve, it further includes: judging whether the compressor is in an operating state; if so, executing the step of comparing the actual evaporation temperature with the target evaporation temperature at the corresponding moment in the change curve; if not, starting the compressor, and determining an initial frequency and an initial operating duration according to the initial value of the target evaporation temperature; controlling the compressor to operate at the initial frequency for the initial operating duration; executing the step of obtaining the first difference between the actual evaporation temperature and the target evaporation temperature at the corresponding moment in the change curve.

2. The air-conditioning cooling control method according to claim 1, characterized in that, The step of obtaining the total cooling load in the current indoor environment according to the indoor temperature and the cooling requirements includes: Obtain the indoor instantaneous cooling load, and obtain the indoor cooling load based on the required duration of temperature reduction; Obtain the heat removal load to be removed based on the indoor temperature and the set temperature; Add the indoor cooling load and the heat removal load to be removed to obtain the total cooling load for temperature reduction.

3. The air-conditioning cooling control method according to claim 2, wherein Before the step of obtaining the total cooling load for temperature reduction in the current indoor environment according to the indoor temperature and the cooling requirement, the following steps are further included: Detect the outdoor temperature during the operation of the air conditioner; The step of obtaining the indoor instantaneous cooling load and obtaining the indoor cooling load based on the required duration of temperature reduction includes: Obtain the room type information, regional information, and weather information corresponding to the air conditioner; Based on the room type information, regional information, weather information, indoor temperature, and outdoor temperature, obtain the indoor instantaneous cooling load; Integrate and accumulate the indoor instantaneous cooling load with respect to the required duration of temperature reduction to obtain the indoor cooling load.

4. The air-conditioning cooling control method according to claim 1, wherein, The step of predicting the target evaporation temperature change curve of the air conditioner in the cooling mode based on the total cooling load for temperature reduction includes: Construct a functional relationship between the target evaporation temperature and time by combining preset parameters and the total cooling load for temperature reduction to predict the change curve.

5. The air-conditioning cooling control method according to claim 1, wherein After the step of adjusting the operating frequency of the compressor in the air conditioner based on the comparison result to make the indoor temperature meet the cooling requirement, the following steps are further included: When it is detected that the cooling time exceeds the required duration of temperature reduction, repeat the step of obtaining the first difference between the actual evaporation temperature at this time and the target evaporation temperature at the corresponding moment in the change curve; Until the cooling time reaches the sum of the required duration of temperature reduction and the preset duration, switch from the cooling mode to the conventional cooling control mode.

6. An air conditioner, characterized in that, The air conditioner includes: a memory, a processor, and an air conditioner cooling control program stored on the memory and executable on the processor. When the air conditioner cooling control program is executed by the processor, the steps of the air conditioner cooling control method according to any one of claims 1 to 5 are implemented.

7. A computer-readable storage medium, characterized in that, An air conditioner cooling control program is stored on the computer-readable storage medium. When the air conditioner cooling control program is executed by the processor, the steps of the air conditioner cooling control method according to any one of claims 1 to 5 are implemented.

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